MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'Biological Trace Element Research' source. Sun, 21 Mar 2010 17:00:38 +0100 http://www.medworm.com/index.php?rid=3385871&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20237862%26dopt%3DAbstract Authors: Patlar S, Boyali E, Baltaci AK, Mogulkoc R The present study aims to examine the effects of both physical activity and vitamin A supplementation on trace element metabolism in individuals engaged in taekwondo. The study registered seven healthy male national taekwondo players whose mean age was 21.86 +/- 0.34 years and mean weight was 64.86 +/- 2.72 kg. The subjects were supplemented with oral administration of 100 mg vitamin A (retinol) for 6 weeks, and concurrently, they were subjected to taekwondo training 5 days a week. Before starting the vitamin A supplementation, blood samples were taken from the subjects twice, once at rest and once after exhaustion. Similarly, at the end of the 6-week vitamin A supplementation, two blood samples were taken from the subjects, once at r... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3385871 Thu, 18 Mar 2010 00:00:00 +0100 3385871 http://www.medworm.com/index.php?rid=3379638&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229359%26dopt%3DAbstract The objective of this study was to evaluate the effects of injected Se and vitamin E (vit E) on hematology, serum proteins, and performance of lambs during the period which the animals are at risk of Se and/or vit E deficiency. The study also aims to determine the relationship between selenium injection and the levels of other trace elements in blood serum of lambs. A total of 16 lambs of Baloochi breed (age, 70 +/- 7 days and weight, 15.2 +/- 1.4) were enrolled in the study. The animals were divided into two groups. In the test group, vit E and Se injected at a dose of 0.2 ml/kg BW (Vetoquinol, Selepherol(R), Lure Cedex, France, alpha-tocopherol acetate 3.82 g/100 ml plus sodium selenite 0.023 g/100 ml) at the enrollment. Control lambs were received equal amounts of normal saline as place... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3379638 Tue, 16 Mar 2010 00:00:00 +0100 3379638 http://www.medworm.com/index.php?rid=3379636&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229360%26dopt%3DAbstract In this study, Cd uptake, translocation, and tolerance were investigated in AHA1 (Arabidopsis plasma membrane H(+)-ATPase gene) overexpressed plants. Exposed to 10 microM CdCl(2), AHA1OX showed a higher root elongation, accumulated more Cd, and maintained better integrity of nucleus membrane of root tips in comparison to the control plant (WT), suggesting that AHA1OX was more Cd tolerant than WT. To investigate Cd tolerance mechanism of AHA1OX plants, we measured the activity of plasma membrane H(+)-ATPase and the secretion of citrate. Results indicated that treatment with 10 microM of Cd stimulated the activity of plasma membrane H(+)-ATPase and the secretion of citrate, while 30 microM of Cd inhibited them. AHA1OX had higher activity of H(+)-ATPase and secretion of citrate than WT. Addit... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3379636 Tue, 16 Mar 2010 00:00:00 +0100 3379636 http://www.medworm.com/index.php?rid=3379645&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229173%26dopt%3DAbstract Authors: Krittaphol W, McDowell A, Thomson CD, Mikov M, Fawcett JP L: -Selenomethionine (SeMet) and sodium selenite are widely used selenium nutritional supplements with potential benefit in preventing cancer. However, supplementation is not without risks of toxicity if intake is too high. The aim of the present study was to investigate SeMet and selenite metabolism in the gastrointestinal tract with particular focus on the formation of the volatile selenium excretion products, dimethylselenide (DMSe) and dimethyldiselenide (DMDSe). Adult male Wistar rats (n = 5) were euthanized, their intestinal tracts removed and the contents of jejunum, ileum, caecum and colon used to prepare 10% suspensions in saline. SeMet and selenite (0.5-0.6 mM) were then incubated with these suspensions at 37 ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3379645 Sat, 13 Mar 2010 00:00:00 +0100 3379645 http://www.medworm.com/index.php?rid=3379640&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20229174%26dopt%3DAbstract In conclusion, this study reports serum Mg reference values based on current standards in a large healthy population of young Iranian adults. PMID: 20229174 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3379640 Sat, 13 Mar 2010 00:00:00 +0100 3379640 http://www.medworm.com/index.php?rid=3354311&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20217274%26dopt%3DAbstract Authors: Zhang JL, Wetson AM, Wang SM, Gurmani AR, Bao AK, Wang CM Salinity is an increasing problem for agricultural production worldwide. The result of low-affinity Na(+) uptake is toxic to the cytoplasm of most crop plants. Nevertheless, the pathways for this low-affinity Na(+) uptake are still uncertain. In this work we used (22)Na(+) isotope tracing technology to investigate factors associated with determination of root (22)Na(+) influx in the salt accumulation halophyte Suaeda maritima. We found that a 2 min of exposure to the (22)Na(+) labeled uptake solution was optimal for determining (22)Na(+) influx into excised roots of S. maritima and that 7 min of blotting is suitable in (22)Na(+) influx experiments. (22)Na(+) influx did not increase linearly with the increasing external ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3354311 Wed, 10 Mar 2010 00:00:00 +0100 3354311 http://www.medworm.com/index.php?rid=3354315&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20213346%26dopt%3DAbstract Authors: Aytekin I, Onmaz AC, Aypak SU, Gunes V, Kucuk O The aim of this study was to compare hematological, some biochemical parameters, and serum trace element concentrations in horses with or without pica. Fifteen horses with pica (group I) and another 15 healthy horses without pica (group II) were used. The hematological parameters were not changed between the two groups. In group I, hemoglobin values were lower than those of group II. However, the difference in hemoglobin values between the two groups was not significant (P > 0.05). Serum iron and copper concentrations and the copper/zinc ratio were lower in group I than those of group II (P < 0.05). The other biochemical parameters were not found to be statistically different between the two groups (P > 0.05). It was con... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3354315 Tue, 09 Mar 2010 00:00:00 +0100 3354315 http://www.medworm.com/index.php?rid=3354314&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20213347%26dopt%3DAbstract This study aims to examine the effect of zinc administration on liver glycogen levels of rats in which diabetes was induced with streptozotocin and which were subjected to acute swimming exercise. The study was conducted on 80 adult Sprague-Dawley male rats, which were equally allocated to eight groups: group 1, general control; group 2, zinc-administrated control; group 3, zinc-administrated diabetic control; group 4, swimming control; group 5, zinc-administrated swimming; group 6, zinc-administrated diabetic swimming; group 7, diabetic swimming; group 8, diabetic control group. In order to induce diabetes, animals were injected with 40 mg/kg intraperitoneal (ip) streptozotocin. The injections were repeated in the same dose after 24 h. Animals which had blood glucose at or above 300 mg/dl... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3354314 Tue, 09 Mar 2010 00:00:00 +0100 3354314 http://www.medworm.com/index.php?rid=3354313&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20217272%26dopt%3DAbstract The objective of this study is to investigate the neurotoxicity of drinking water fluorosis on rat hippocampus. Just weaning male Sprague-Dawley rats were randomly divided into four groups and given 15, 30, and 60 mg/L NaF solution and distilled water, respectively, for 9 months. The fluidity of brain synaptic membrane and expression level of postsynaptic density 95 (PSD-95) were tested. Results showed that the fluidity of brain synaptic membrane decreased gradually with increasing of fluoride concentration, and it was significantly decreased (P < 0.05) in moderate-fluoride group compared with control group, and expression level of PSD-95 was significantly decreased (P < 0.01) in moderate-fluoride group when compared with that of control group. These results indicate that decrease of... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3354313 Tue, 09 Mar 2010 00:00:00 +0100 3354313 http://www.medworm.com/index.php?rid=3354312&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20217273%26dopt%3DAbstract Authors: Norouzian MA Relation between iodine (I) intake by lactating Holstein cows and iodine concentrations in raw and pasteurized milk were investigated. Four treatment groups with eight cows assigned to each treatment were fed a basal diet containing 0.534 mg I/kg alone or supplemented with potassium iodide at 2.5, 5 or 7.5 mg/kg in 7-week period. Iodine concentrations in raw milk increased with each increase in dietary I from 162.2 ng/ml for basal diet to 534.5, 559.8 and 607.5 ng/ml when 2.5, 5 and 7.5 mg/kg was fed as potassium iodide (P < 0.05). This trend was found for blood plasma and urine iodine concentration. Iodine supplementation had no significant effect on thyroidal hormones. high-temperature short-time (HTST) pasteurization process reduced I concentration. The mean... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3354312 Tue, 09 Mar 2010 00:00:00 +0100 3354312 http://www.medworm.com/index.php?rid=3354308&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20217275%26dopt%3DAbstract Authors: Barbieri FL, Cournil A, Souza Sarkis JE, Bénéfice E, Gardon J Severe polymetallic contamination is frequently observed in the mining communities of Bolivian Altiplano. We evaluated hair trace elements concentrations at the population level to characterise exposure profile in different contexts of contact with mining and metallurgical pollution. We sampled 242 children aged 7 to 12 years in schools from five Oruro districts located in different contexts of potential contamination. Hair trace elements concentrations were measured using ICP-MS (Pb, As, Hg, Cd, Sb, Sn, Bi, Ag, Ni, Se, Cu, Cr, Mn, Co and Zn). We compared concentration according to school areas and gender. Concentrations were markedly different depending on school areas. Children from schools near industri... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3354308 Tue, 09 Mar 2010 00:00:00 +0100 3354308 http://www.medworm.com/index.php?rid=3339933&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20204548%26dopt%3DAbstract Authors: Picarelli A, Di Tola M, Vallecoccia A, Libanori V, Magrelli M, Carlesimo M, Rossi A On contact with the skin, nickel may cause allergic contact dermatitis, which can be diagnosed by an epicutaneous patch test. Nickel exposure via the intestinal mucosa can induce diarrhea, abdominal pain, and swelling. The aim of the present study was to investigate the relationship between these symptoms and nickel intake by means of a novel oral mucosa patch test. Eighty-six patients with intestinal symptoms related to ingestion of nickel-containing foods were submitted to epicutaneous and oral mucosa patch tests for nickel. All patients with positive oral mucosa patch test results were subject to a low-nickel diet and monitored over time. Skin lesions were observed in 33 out of 86 (38.4%) pa... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3339933 Fri, 05 Mar 2010 00:00:00 +0100 3339933 http://www.medworm.com/index.php?rid=3339932&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20204549%26dopt%3DAbstract Authors: Bouazizi H, Jouili H, Geitmann A, El Ferjani E Copper is both a nutrient and an environmental toxin that is taken up by plants. In order to determine the subcellular localization of copper and to assess the resulting metabolic changes, we exposed 14-day-old bean seedlings to nutrient solutions containing varying concentrations of Cu(2+) ions for 3 days. Biochemical analyses revealed that the cell wall was the major site of Cu(2+) accumulation in the leaves of treated plants. Excess copper modified the activity of lignifying peroxidases in both soluble and ionic cell wall-bound fraction. The activity of ionic GPX (guaiacol peroxidase, EC 1.11.1.7) was increased by 50 and 75 microM CuSO(4.) The activities of both ionic CAPX (coniferyl alcohol peroxidase, EC 1.11.1.4) and NADH ox... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3339932 Fri, 05 Mar 2010 00:00:00 +0100 3339932 http://www.medworm.com/index.php?rid=3339931&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20204550%26dopt%3DAbstract Authors: Lassoued S, Mseddi M, Mnif F, Abid M, Guermazi F, Masmoudi H, El Feki A, Attia H The aim of this study was to evaluate and compare the oxidative profiles of three thyroid disorders: Graves' disease (GD), Hashimoto thyroiditis (HT), and papillary thyroid cancer (PTC). Malondialdehyde levels (MDA), glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT) activities were examined in the plasma of 52 patients (29 untreated HT, 16 untreated GD, and 7 PTC who underwent surgical therapy). Results were compared with those of 30 healthy controls and among the three groups of patients. The GD, HT, and PTC patients exhibited increased plasma MDA levels and SOD activities compared with the controls (p < 0.05, p < 0.05, and p < 0.001, respectively). CAT activit... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3339931 Fri, 05 Mar 2010 00:00:00 +0100 3339931 http://www.medworm.com/index.php?rid=3336018&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20198454%26dopt%3DAbstract Authors: Gajula SS, Chelasani VK, Panda AK, Mantena VL, Savaram RR The purpose of this study was to investigate the interaction and main effects of supplemental Zn and Mn levels on growth, tissue mineral uptake, and immune response in broiler chicken. A basal diet of corn-soybean meal was supplemented with Zn at 40, 80, or 160 ppm and Mn at 60, 120, or 240 ppm in a factorial pattern to constitute nine experimental diets. Each diet was offered to nine replicates of six chicks in stainless steel battery brooders. At 35 days of age, body weight gain, feed conversion efficiency, hock joint scores, tibia weight, tibia strength, and percent ash were not influenced by Zn and Mn levels and their interactions. The concentration of Zn (207-238 ppm) and Mn (11.8-16.3 ppm) in tibia increased linea... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3336018 Wed, 03 Mar 2010 00:00:00 +0100 3336018 http://www.medworm.com/index.php?rid=3327977&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195925%26dopt%3DAbstract Authors: Alatise OI, Schrauzer GN Breast cancer incidence in Nigerian women has significantly increased during the past three decades in parallel with the rapid industrialization of that country. This suggested that the associated widespread contamination of the soil and of the water supplies by lead (Pb) and other industrial metals was a major contributing cause. Because of its many domestic, industrial, and automotive uses, Pb is of particular concern as it has been shown to promote the development of mammary tumors in murine mammary tumor virus-infected female C3H mice at levels as low of 0.5 ppm Pb in the drinking water. Lead belongs to the group of selenium-antagonistic elements that interact with selenium (Se), abolishing its anti-carcinogenic effect. Lead on chronic, low-level e... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327977 Wed, 03 Mar 2010 00:00:00 +0100 3327977 http://www.medworm.com/index.php?rid=3327986&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195916%26dopt%3DAbstract Authors: Lehoczki R, Erdélyi K, Sonkoly K, Szemethy L, Csányi S The iodine-containing hormones produced by the thyroid gland play a role in the complex neuro-hormonal regulation of antler development. The proper function of the thyroid depends on the adequate iodine supply of the organism, which is directly related to the iodine content of food and drinking water. The purpose of this study was to explore the connection between the iodine content of the water base, which has a strong correlation with the iodine concentration of environmental components available to animals, and the antler weight of roe deer (Capreolus capreolus) shot in Hungarian hunting areas. Using a general linear model, controlling for the collective effects of other environmental factors (deer population ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327986 Tue, 02 Mar 2010 00:00:00 +0100 3327986 http://www.medworm.com/index.php?rid=3327985&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195917%26dopt%3DAbstract Authors: Suliburska J, Bogdański P, Pupek-Musialik D, Krejpcio Z Inadequate minerals intake, as well as disruption of some metabolic processes in which microelements are cofactors, are suggested to lead to the development of hypertension. The role of minerals in the pathogenesis of hypertension still remains to be explained. In the present study, we sought to determine associations between serum and hair mineral concentrations and serum lipids and glucose levels. Forty obese hypertensive subjects with insulin resistance and 40 healthy volunteers were recruited in the study. Blood pressure, BMI, and insulin resistance were recorded in all subjects. Levels of lipids, glucose, sodium and potassium, iron, copper, zinc, magnesium, and calcium were assessed in serum. Iron, copper, zinc... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327985 Tue, 02 Mar 2010 00:00:00 +0100 3327985 http://www.medworm.com/index.php?rid=3327984&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195918%26dopt%3DAbstract Authors: de Moraes ML, de Faria Barbosa R, Santo RE, da Silva Santos F, de Jesus EF, Sardinha FL, Tavares do Carmo MD Adolescence is marked by intensive growth and development. When pregnancy occurs during this period of the mother's growth, there is an increase in her nutritional needs. The aim of this study was to determine the levels of calcium, iron, copper, and zinc in maternal plasma, the placenta, and in the cord plasma of pregnant teenagers and adults. A total of 80 sets of maternal plasma, placentas, and cord plasma (40 from teenagers and 40 from adults) were analyzed using synchrotron radiation total reflection X-ray fluorescence. The levels of calcium, copper, and zinc in the maternal and cord plasma from teenagers were not significantly different than those from adults. Iro... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327984 Tue, 02 Mar 2010 00:00:00 +0100 3327984 http://www.medworm.com/index.php?rid=3327983&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195919%26dopt%3DAbstract Authors: Patlar S, Boyali E, Baltaci AK, Mogulkoc R, Gunay M Many researchers have emphasized the relation between nutrition and development and sustaining performance. Two methods are commonly employed to identify the interaction between physical activity and nutrition. The first consists of administering food with a variety of contents to people engaged in physical activity and observing their performance responses, and the other is concerned with determining the effects of physical activity on nutrition. Therefore, it can be said that there has been a growing interest in the explorations into the relation between exercise and vitamins, minerals, and elements. The present study reports the effects of 6 weeks administration of 300 mg/day vitamin E on the distribution of serum elements... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327983 Tue, 02 Mar 2010 00:00:00 +0100 3327983 http://www.medworm.com/index.php?rid=3327982&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195920%26dopt%3DAbstract Authors: Ikeda M, Fukui Y, Ohashi F, Sakuragi S, Moriguchi J Recent publications in Japan suggest that Cd in river beds and locally harvested rice tend to be higher in seven prefectures in the north-eastern part on the coast of the Sea of Japan (the high-Cd zone). The present study was initiated to investigate the current level of exposure to Cd and possible health effects among local populations in the zone. Thus, levels of Cd and three tubular dysfunction markers [i.e., alpha (1)-MG, beta (2)-MG, and N-acetyl-beta-D: -glucosaminidase (NAG)] were examined in urine of local residents (700 and 704 adult women, respectively) in two prefectures (prefecture 1 and prefecture 7), which were located in the north-east (prefecture 1) and south-west ends (prefecture 7) of the high-Cd zone. Urina... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327982 Tue, 02 Mar 2010 00:00:00 +0100 3327982 http://www.medworm.com/index.php?rid=3327981&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195921%26dopt%3DAbstract Authors: Peng X, Cui Y, Cui W, Deng J, Cui H, Yang F The purpose of this 42-day study was to investigate the effects of low selenium (Se) on immune function by determining cell cycle and apoptosis of bursa of Fabricius. One hundred twenty 1-day-old avian broilers were randomly assigned to two groups of 60 each and were fed on a low Se diet (0.0342 mg/kg Se) or a control diet (0.2 mg/kg Se), respectively. The relative weight of bursa was significantly decreased in low Se group from 28 days of age in time-dependent manner when compared with that of control group. Cell cycle analysis by flow cytometry showed that low Se caused an increase in G(0)G(1) phase cells that corresponded to a decrease in S phase cells in bursa of Fabricius. Ultrastructurally, mitochondria injury and increased apo... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327981 Tue, 02 Mar 2010 00:00:00 +0100 3327981 http://www.medworm.com/index.php?rid=3327980&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195922%26dopt%3DAbstract Authors: Liu Y, Mei P, Zhang YZ, Sun XH, Liu Y The binding of one fluorine including triazole (C(10)H(9)FN(4)S, FTZ) to bovine serum albumin (BSA) was studied by spectroscopic techniques including fluorescence spectroscopy, UV-Vis absorption, and circular dichroism (CD) spectroscopy under simulative physiological conditions. Fluorescence data revealed that the fluorescence quenching of BSA by FTZ was the result of forming a complex of BSA-FTZ, and the binding constants (K (a)) at three different temperatures (298, 304, and 310 K) were 1.516 x 10(4), 1.627 x 10(4), and 1.711 x 10(4) mol L(-1), respectively, according to the modified Stern-Volmer equation. The thermodynamic parameters DeltaH and DeltaS were estimated to be 7.752 kJ mol(-1) and 125.217 J mol(-1) K(-1), respectively, indic... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327980 Tue, 02 Mar 2010 00:00:00 +0100 3327980 http://www.medworm.com/index.php?rid=3327979&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195923%26dopt%3DAbstract The objective of this investigation was to determine the effect of muscle calcium (Ca(++)) changes upon Ca(++) losses during prolonged HK. Studies were conducted on 20 physically healthy male volunteers during a pre-experimental period of 30 days and an experimental period of 364 days. Subjects were equally divided in two groups: control subjects (CS) and experimental subjects (ES). The CS group ran average distances of 9.2 +/- 1.2 km day(-l), and the ES group walked average distances of 2.3 +/- 0.2 km day(-l). Muscle Ca(++) contents, plasma Ca(++) concentrations, and Ca(++) losses in urine and feces were measured in the experimental and control groups of subjects. The muscle Ca(++) contents decreased (p < 0.05), and plasma Ca(++) levels and Ca(++) losses in the urine and feces increase... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327979 Tue, 02 Mar 2010 00:00:00 +0100 3327979 http://www.medworm.com/index.php?rid=3327978&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20195924%26dopt%3DAbstract Authors: Liu L, Jin W, Lv JP The in vivo effects of oral administration of the high-chromium yeast to healthy and diabetic mice are described. Given that these complexes are proposed to function by potentiating the actions of insulin and activating the insulin receptor kinase, changes in lipid and carbohydrate metabolism would be expected. After 15 weeks administration (500 mug Cr/kg body mass) to healthy mice, abnormal metabolism and pathological change were not observed. After 15 weeks of treatment (0-1,000 mug Cr/kg body mass) of diabetic mice, the effect of high-chromium yeast on blood lipids and blood glycosylated hemoglobin (GHb) of diabetes are not consistent. High-chromium yeast results in a lowering (P < 0.05) of GHb and triglyceride, lowering (P < 0.01) of total cholest... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327978 Tue, 02 Mar 2010 00:00:00 +0100 3327978 http://www.medworm.com/index.php?rid=3327989&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20191388%26dopt%3DAbstract Authors: Pinton S, Luchese C, Nogueira CW The hypothesis to be tested in this study is whether the introduction of the chloro group into diphenyl ditelluride molecule (p,p'-dichlorodiphenyl ditelluride, compound 1b) alters the antioxidant and scavenging activity of diphenyl ditelluride (compound 1a) in vitro. The results revealed that 1a and 1b had a potent antioxidant activity in vitro. However, the introduction of a functional group, chloro, into diphenyl ditelluride molecule (1b) did not cause great alterations in the antioxidant action of diphenyl ditelluride against lipid peroxidation, protein carbonyl, and scavenging of 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonate) and 2,2'-diphenyl-1-picrylhydrazyl radicals. Based on the in vitro results, different doses (0.25 and 0.75 micr... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327989 Sat, 27 Feb 2010 00:00:00 +0100 3327989 http://www.medworm.com/index.php?rid=3327988&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20191389%26dopt%3DAbstract Authors: Fei M, Li N, Ze Y, Liu J, Gong X, Duan Y, Zhao X, Wang H, Hong F In order to study the mechanisms underlying the effects of lanthanoid (Ln) on the liver, ICR mice were injected with LaCl(3), CeCl(3), and NdCl(3) at a dose of 20 mg/kg BW into the abdominal cavity daily for 14 days. We then examined oxidative stress-mediated responses in the liver. The increase of lipid peroxide in the liver produced by Ln suggested an oxidative attack that was activated by a reduction of antioxidative defense mechanisms as measured by analyzing the activities of superoxide dismutase, catalase, and ascorbate peroxidase, as well as antioxidant levels such as glutathione and ascorbic acid, which were greatest in Ce(3+) treatment, medium in Nd(3+), and least in La(3+). Our results also implied that... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327988 Sat, 27 Feb 2010 00:00:00 +0100 3327988 http://www.medworm.com/index.php?rid=3327987&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20191390%26dopt%3DAbstract Authors: Singh KK, Gupta MK, Ram M, Singh V, Roy BK This experiment was designed to assess the effect of chronic fenvalerate toxicity on tissue Cu concentration in goats and to explore the pathways responsible for it. A significant decrease in tissue Cu concentration of kidney, heart, and brain while an increase in the liver were recorded in fenvalerate intoxicated goats at 15 mg/kg b.w. orally daily for 270 days. Concentration of total Cu, protein-free Cu, and protein-bound Cu in the wet intestine of fenvalerate-treated goats revealed a significant decrease in Cu concentration of the intestine due to the decrease in trichloroacetic acid (TCA)-insoluble Cu, while TCA-soluble Cu remained almost unaffected. Rabbit duodenal loop technique was used to assess the relative absorption of noni... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3327987 Sat, 27 Feb 2010 00:00:00 +0100 3327987 http://www.medworm.com/index.php?rid=3315372&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20186501%26dopt%3DAbstract Authors: Kaur T, Kaur S Knowledge of the chemical, structural, and elemental composition of gallstones is essential for etiopathogenesis of gallstone disease. To identify the predisposing factors for gallstone formation, X-ray diffraction powder analysis, atomic absorption spectroscopy, and various biochemical estimations were carried out. In the present study, trace elemental analysis revealed calcium as the major constituent element in addition to the iron, magnesium, and zinc in the majority of the gallstones. Patients with gallstones exhibited increased serum total bilirubin and conjugated bilirubin levels and liver function parameters (serum glutamic pyruvic transaminase, serum glutamic oxaloacetic transaminase, and alkaline phosphatase). In patients with gallstones, higher concen... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3315372 Fri, 26 Feb 2010 00:00:00 +0100 3315372 http://www.medworm.com/index.php?rid=3310208&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20180041%26dopt%3DAbstract Authors: Naseri Z, Mohri M, Aslani MR, Alavi Tabatabaee AA Thirty-six calves were used in the present study. The animals were divided equally into three groups (control, test 1, and test 2). The three groups of calves were homogeneous for parity of dams, sex, and month of birth. From 14 days of age, in the test 1 group copper as copper sulfate (Merck Co, Germany) was added to each meal of milk at a rate of 10 mg/kg of milk for 14 days and in test 2 group copper as copper sulfate was added to each meal of milk at a rate of 20 mg/kg of milk for 14 days. Blood samples were taken by jugular venipuncture using disposable syringes at 14 (before Cu supplementation), 30, 60, and 80 days of age. Anticoagulated blood was used for CBC determination. Plane tubes were used for harvesting of serum a... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310208 Wed, 24 Feb 2010 00:00:00 +0100 3310208 http://www.medworm.com/index.php?rid=3310207&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20180042%26dopt%3DAbstract In conclusion, we observed that copper, zinc, and selenium in serum and follicular fluid decreased in women undergoing IVF. Multivitamin/mineral supplementation in serum and follicular fluid of women undergoing IVF normalized the trace element levels. PMID: 20180042 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310207 Wed, 24 Feb 2010 00:00:00 +0100 3310207 http://www.medworm.com/index.php?rid=3310206&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20180043%26dopt%3DAbstract In conclusion, our results obviously indicated that heroin effected both bio-element status and antioxidant enzyme activities and, exogenous melatonin or vE+Se therapy might relieve on the element and antioxidant enzyme the destructive activity caused by heroin. PMID: 20180043 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310206 Wed, 24 Feb 2010 00:00:00 +0100 3310206 http://www.medworm.com/index.php?rid=3310205&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20180044%26dopt%3DAbstract Authors: Tan C, Chen H, Wu T, Xia C The relationship between the mortality of nasopharyngeal carcinoma (NPC) and soil trace elements of 29 regions of China was investigated. A total of 29 elements (i.e., Mn, Na, K, Mg, Ca, Sr, Ba, Hg, Pb, Se, In, Yb, Lu, Th, U, Sn, Ti, Zr, Hf, Bi, Ta, Te, Br, I, As, Cr, Cu, Fe, and Zn) were considered. A hybrid strategy called genetic algorithm-partial least squares was used to screen out important elements. As a result, only six elements, i.e., Mn, Ti, Mg, K, Na, and I, were picked out, based on which, a PLS model containing two latent variables exhibited the best performance. According to whether the mortality is larger than 2/100,000 (2 x 10(-5)), all the 29 regions were divided into the low-mortality group with 23 regions and the high-mortality gro... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310205 Wed, 24 Feb 2010 00:00:00 +0100 3310205 http://www.medworm.com/index.php?rid=3310204&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20180045%26dopt%3DAbstract Authors: Zalejska-Fiolka J, Wielkoszyński T, Kasperczyk S, Kasperczyk A, Birkner E The effects of administration of oxidized rapeseed oil and alpha-lipoic acid on activities of hepatic antioxidant enzymes and lipid peroxidation were studied in laboratory rats. There was an increase of the activities of superoxide dismutase, glutathione peroxidase, glutathione reductase, and glucose-6-phosphate dehydrogenase in rats fed a high fat diet to which 10% oxidized oil was added. Administration of alpha-lipoic acid resulted in a decrease of the activities of these enzymes. Addition of oxidized oil also resulted in increased production of oxygen radicals, evidenced by elevated malondialdehyde production. Such effect was counteracted by administration of alpha-lipoic acid. PMID: 2018004... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310204 Wed, 24 Feb 2010 00:00:00 +0100 3310204 http://www.medworm.com/index.php?rid=3310203&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20180046%26dopt%3DAbstract Authors: Yang J, Wang T, Wu C, Liu C Selenium deficiency is widely accepted as a fundamental cause of Keshan disease (KD). In the present study, the selenium levels of hair and food samples of KD in some endemic areas were measured; the prevalence and incidence of KD for the year 2007 in these areas were surveyed. The results for KD surveillance from 2003 to 2007 were analyzed. The selenium level was measured fluorometrically. In 2007, a total of 19,280 residents were surveyed in 15 provinces. The prevalence and incidence of KD were 3.0% and 4.9 per thousand, respectively. In KD and control subjects, the mean levels of hair selenium were respectively 0.3223 mg/kg and 0.4466 mg/kg. The mean level of staple food selenium was 0.0227 +/- 0.0144 mg/kg. During the 5 years, the selenium conte... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310203 Wed, 24 Feb 2010 00:00:00 +0100 3310203 http://www.medworm.com/index.php?rid=3310213&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20177812%26dopt%3DAbstract Authors: Jouili H, Bouazizi H, El Ferjani E The aim of this study is to investigate the effect of aluminium treatment on peroxidases activities and protein content in both soluble and cell-wall-bound fractions of sunflower leaves, stems and roots. Fourteen-day-old seedlings, grown in a nutrient solution, were exposed to a toxic amount of aluminium (500 muM AlNO(3)) for 72 h. Under stress conditions, biomass production, root length and leaf expansion were significantly reduced. Also, our results showed modulations on soluble and ionically cell-wall-bound peroxidases activities. In soluble fraction, peroxidases activities were enhanced in all investigated organs. This stimulation was also observed in ionically cell-wall-bound fraction in leaves and stems. Roots showed a differential beha... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310213 Tue, 23 Feb 2010 00:00:00 +0100 3310213 http://www.medworm.com/index.php?rid=3310212&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20177813%26dopt%3DAbstract Authors: Iizuka Y, Ueda Y, Yagi Y, Sakurai E We studied the effect of sodium selenate on insulin resistance of Goto-Kakizaki (GK) rats. Rats were kept on standard laboratory chow with and without i.p. injections of sodium selenate (0.173 mg/kg body weight) for 14 days, and then subjected to the glucose clamp. The glucose clamp studies confirmed an improvement in insulin-stimulated glucose disposal in GK rats treated with sodium selenate, with respect to both insulin sensitivity and responsiveness. This amelioration of insulin resistance may be partly due to a direct effect of the sodium selenate on peripheral tissues. 2-Deoxyglucose uptake in sodium selenate-treated adipocytes was increased and the insulin findings suggest that sodium selenate increases not only insulin sensitivity but... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310212 Tue, 23 Feb 2010 00:00:00 +0100 3310212 http://www.medworm.com/index.php?rid=3310211&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20177814%26dopt%3DAbstract Authors: Wang L, Wang H, Li L, Li W, Dong X, Li M, Lv L PMID: 20177814 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310211 Tue, 23 Feb 2010 00:00:00 +0100 3310211 http://www.medworm.com/index.php?rid=3310210&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20177815%26dopt%3DAbstract Authors: Atlabachew M, Chandravanshi BS, Redi M The levels of essential (Ca, Mg, Mn, Fe, Zn, Cr, Cu, and Co) and non-essential (Cd and Pb) metal in six different varieties of Ethiopian khat (Catha edulis Forsk, an evergreen stimulant plant) commonly consumed in the country and exported to the neighboring countries were determined by flame atomic absorption spectrometry. Known weight of oven-dried khat samples were wet-digested using 2 mL of (69-72%) HNO(3) and 2 mL of (70%) HClO(4) for 2 h and 30 min at variable temperature (120-270 degrees C). The mineral contents in the digests were analyzed using flame atomic absorption spectrometer. The following concentrations ranges in fresh-weight basis were recorded in decreasing order: Ca (1,038-2,173 microg/g) > Mg (478.2-812.3 microg/g) &... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310210 Tue, 23 Feb 2010 00:00:00 +0100 3310210 http://www.medworm.com/index.php?rid=3310209&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20177816%26dopt%3DAbstract In conclusion, apoptosis was not changed by long-term ELF-MF exposure, while both 100 and 500 microT ELF-MF exposure induced toxic effect in the rat brain by increasing oxidative stress and diminishing antioxidant defense system. PMID: 20177816 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310209 Tue, 23 Feb 2010 00:00:00 +0100 3310209 http://www.medworm.com/index.php?rid=3310219&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20174974%26dopt%3DAbstract Authors: Schöpfer J, Drasch G, Schrauzer GN Cadmium (Cd) from cigarette smoke, environmental, and nutritional sources accumulates in the human prostate where it interacts with selenium (Se) in a manner suggesting the formation of a 1:1 Cd-Se-protein complex. At low Cd exposures and adequate Se status, this interaction may be beneficial as it results in the detoxification of Cd. At higher exposures, Cd may weaken or abolish the anticarcinogenic effects of Se and increase prostate cancer risk. In some older men and especially in smokers, Cd levels in prostates reach levels in stoichiometric excess over Se, which may be the reason why heavy smokers are at higher risk of developing lethal forms of prostate cancer. In the liver and the kidneys, Cd accumulates as well, but in these orga... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310219 Sat, 20 Feb 2010 00:00:00 +0100 3310219 http://www.medworm.com/index.php?rid=3310218&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20174975%26dopt%3DAbstract Authors: Roy S, Dontamalla SK, Mondru AK, Sannigrahi S, Veerareddy PR To investigate whether sodium selenate treatment would impact on the onset of diabetic nephropathy, we examined blood glucose, serum biochemical components, and interrelationship between oxidative stress, TGF-beta1, and apoptosis in streptozotocin (STZ) induced diabetic rats. Sixty male Wistar rats were divided into six groups. Group I (n = 10), normal control; Group II (n = 10), diabetic control; Group III (n = 10), sodium selenate (16 mumoles/kg) + diabetic; Group IV (n = 10), sodium selenate (32 mumoles/kg) + diabetic; Group V (n = 10), sodium selenate (16 mumoles/kg) control; and Group VI (n = 10), sodium selenate (32 mumoles/kg) control. Sodium selenate was administered via orogastric route for 10 weeks. In the ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310218 Sat, 20 Feb 2010 00:00:00 +0100 3310218 http://www.medworm.com/index.php?rid=3310217&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20174976%26dopt%3DAbstract Authors: Rooban BN, Sasikala V, Sahasranamam V, Abraham A Recently, much interest has been generated in the search for phytochemical therapeutics, as they are largely free from adverse side effects and economical. The goal of this study was to determine the efficacy of Vitex negundo in modulating the selenite-induced oxidative stress in vivo model. Sprague-Dawley rat pups of 8 days old were used for the study and divided into control (G I), selenite induced (G II), and selenite + V. negundo treated (G III). Cataract was induced by the single subcutaneous injection of sodium selenite (4 mg/kg body weight) on the tenth day and V. negundo (2.5 mg/Kg body weight) administered intraperitoneally from eighth to 15th day. Morphological examination of the rat lenses revealed no opacification in... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310217 Sat, 20 Feb 2010 00:00:00 +0100 3310217 http://www.medworm.com/index.php?rid=3310216&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20174977%26dopt%3DAbstract Authors: Yuan X, Shi J, Yang Y, Luan J, Gao J, Wang Y Element fingerprints were deciphered for Fritillaria thunbergii from Chinese ten major fritillaria-producing regions for the purpose of examining differences in element composition with region of origin and identifying elements' importance to F. thunbergii. Analysis by inductively coupled plasma optical emission spectrometry allowed simultaneous determination of 18 elements in F. thunbergii (Al, B, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Na, Mn, Mo, S, Ni, P, Pb, and Zn), and patterns in element concentrations were deciphered by principle component analysis (PCA) and hierarchical cluster analysis (HCA). The element fingerprint was established which well reflected the element characteristics of F. thunbergii. Meanwhile, the ten regions were d... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310216 Sat, 20 Feb 2010 00:00:00 +0100 3310216 http://www.medworm.com/index.php?rid=3310215&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20174978%26dopt%3DAbstract Authors: Lu L, Wang RL, Zhang ZJ, Steward FA, Luo X, Liu B An experiment was conducted using a total of 840, 1-day-old, Arbor Acres commercial male broilers to compare copper (Cu) sulfate and tribasic Cu chloride (TBCC, Cu(2)(OH)(3)Cl) as sources of supplemental Cu for broilers fed in floor pens. Chicks were randomly allotted to one of seven treatments for six replicate pens of 20 birds each, and were fed a basal corn-soybean meal diet (10.20 mg/kg Cu) supplemented with 0, 100, 150, or 200 mg/kg Cu from either Cu sulfate or TBCC for 21 days. Chicks fed 200 mg/kg Cu as TBCC had a higher (P < 0.05) average daily gain (ADG) than those consuming other diets. Liver Cu contents of broilers fed diets supplemented with TBCC were numerically lower (P > 0.05) than those of broilers fed die... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310215 Sat, 20 Feb 2010 00:00:00 +0100 3310215 http://www.medworm.com/index.php?rid=3310214&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20174979%26dopt%3DAbstract This study aimed to investigate the association of hair calcium levels with augmentation index (AIx), a simple, non-invasive measurement for arterial stiffness. Healthy Koreans (male, n = 34, female, n = 70) were enrolled in this study. Anthropometric parameters, lipid profiles, fasting glucose, hair mineral levels, and AIx were measured. Pearson/partial correlations and multivariate linear regression analyses were used to assess the relationship between hair calcium levels and AIx. AIx positively correlated with hair calcium levels (r = 0.275, p = 0.005), age (r = 0.283, p = 0.004), systolic blood pressure (r = 0.282, p = 0.004), low-density lipoprotein (LDL)-cholesterol (r = 0.255, p = 0.009), and hair magnesium (r = 0.196, p = 0.046), and negatively correlated with heart rate (r = -0.56... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3310214 Sat, 20 Feb 2010 00:00:00 +0100 3310214 http://www.medworm.com/index.php?rid=3291276&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20165930%26dopt%3DAbstract Authors: Mani SS, Subramanian IP, Pillai SS, Muthusamy K The seeds of Nelumbo nucifera (Lotus) have been used in the traditional system of medicine for various ailments including diabetes. The present study was aimed at analyzing the levels of biologically important trace elements in the lotus seeds by atomic absorption spectroscopy and evaluating the hypoglycemic properties of seed ash on streptozotocin-induced diabetes in rats. Diabetic rats treated with lotus seed ash at a concentration of 200 mg/kg body weight orally for 30 days exhibited significant hypoglycemic activity. The presence of trace elements in appreciable amounts in the seeds may play a direct or indirect role on insulin secretion or its action in a synergetic manner. The hypoglycemic activity of the ash was comparable... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3291276 Thu, 18 Feb 2010 00:00:00 +0100 3291276 http://www.medworm.com/index.php?rid=3291275&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20165931%26dopt%3DAbstract Authors: Parameswari RP, Vasanthkumar M, Gayathri V, Manikandamathavan VM, Ramakrishnan G, Sangeetha MK, Vijayakumar V, Raghavendran HB, Chamundeeswari D, Vasanthi HR Copper is known as Gunma Kaalan in Siddha literature, which means that the drug is effective for healing ulcers. The herbomineral drug "Thamira parpam" is prepared by calcining the purified copper foils with rock salt, lime juice, bracteated birth wort juice, and Alangium root decoction according to Siddha medicine. Our study investigated the possible role of Thamira parpam (TP) in the management of cysteamine-induced duodenal ulcers. Cysteamine (400 mg kg(-1) body weight(-1), two doses at 4 h interval) orally given to rats resulted in high ulcer index, increased TBARS with concomitant depletion of antioxidants such as su... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3291275 Thu, 18 Feb 2010 00:00:00 +0100 3291275 http://www.medworm.com/index.php?rid=3284548&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20162376%26dopt%3DAbstract Authors: Zhang B, Yang L, Wang W, Li Y, Li H The prevalence rate of Kaschin-Beck disease (KBD) in most parts of China is currently decreasing, but the disease is still active and severe on the Tibetan Plateau. Soil samples including the surface layer (0-20 cm) and the subsurface layer (20-40 cm) in the cultivated and natural soil profiles were collected, and the mechanical composite and total concentration of arsenic, cobalt, copper, iron, mercury, manganese, molybdenum, selenium, and zinc were determined. Concentrations of arsenic, iron, manganese, copper, and selenium in the surface soil were lower than those in the subsurface soil. The same was true of physical clay in the soil profiles. However, there were no significant differences between the different soil layers. The concentrat... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3284548 Wed, 17 Feb 2010 00:00:00 +0100 3284548 http://www.medworm.com/index.php?rid=3284547&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20162377%26dopt%3DAbstract Authors: Afridi HI, Kazi TG, Kazi N, Kandhro GA, Baig JA, Jamali MK, Arain MB, Shah AQ The pathogenesis of some cardiovascular diseases (CVDs) has been altered with changes in the balance of certain trace and toxic elements. The aim of the present study was to assess the role of zinc (Zn) and cadmium (Cd) in smoker and nonsmoker male CVD patients (n = 457) of two age groups (31-45) and (46-60). The both elements were determined in biological samples (scalp hair, blood, and urine) of CVD patients and healthy referents for comparison purpose. The concentrations of Zn and Cd were measured by atomic absorption spectrophotometer prior to microwave-assisted acid digestion. It was observed that the mean values of Cd were significantly higher in the biological samples of smokers CVD as compare... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3284547 Wed, 17 Feb 2010 00:00:00 +0100 3284547 http://www.medworm.com/index.php?rid=3262434&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20143181%26dopt%3DAbstract Authors: Tupe R, Agte V Using albumin as model, we conducted series of in vitro glycation experiments to examine role of zinc in glycation using glucose at 4-100 mg/ml, incubations at 37 degrees C or 60 degrees C, duration of 2 or 4 weeks and in presence of zinc or ascorbic acid (AA) or folic acid (FA). Modifications of bovine serum albumin (BSA) were examined by using fluorescence of advanced glycation end products (AGEs) and dityrosine, UV, and Fourier transformed infrared spectroscopy. Adding zinc (0 to 768.5 mumol/l) resulted in significant inhibition of albumin glycation by glucose with a linear fit, [Formula: see text]. The glycation by fructose was greater than that of glucose with stronger inhibitory effect by zinc in fructose-glycation (t = -5.8, p = 0.002). Addition of zinc s... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3262434 Tue, 09 Feb 2010 00:00:00 +0100 3262434 http://www.medworm.com/index.php?rid=3254897&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20140652%26dopt%3DAbstract The objective of this study was to investigate the effect of selenium (Se) supply (0, control; 2.5, 5, 10, or 20 muM) on cucumber (Cucumis sativus L.) cv. Polan F1 plants grown under short-term low temperature stress. About 14-16 day-old seedlings, grown at an optimal temperature (25/20 degrees C; day/night), were exposed to short-term chilling stress with a day/night temperature of 10 degrees C/5 degrees C for 24 h, for a further 24 h at 20 degrees C/15 degrees C, and then transferred to 25/20 degrees C (re-warming) for 7 days. Se did not affect the fresh weight (FW) of plants at a concentration of 2.5-10 muM, but in the presence of 20 muM Se, the biomass of shoots significantly decreased. The contents of chlorophylls and carotenoids witnessed no significant change after Se supplementatio... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3254897 Sat, 06 Feb 2010 00:00:00 +0100 3254897 http://www.medworm.com/index.php?rid=3244578&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20127202%26dopt%3DAbstract Authors: Mohiti-Asli M, Zaghari M An experiment was conducted to determine the effect of dietary vitamin E and C on serum metabolites, yolk cholesterol, egg quality, and performance of layer hens. One hundred sixty-eight commercial Hy-Line W-36 layer hens were randomly divided into seven groups and six replicates with four hens in each. Dietary treatments were introduced after the pre-experimental period (10 days) to adjust egg production. Treatments were levels of vitamin E or C (100, 200, and 400 mg/kg diet) supplementation to the basal diet for 4 weeks, whereas the control group received no supplementation. Egg production, egg weight, and feed consumption were recorded during the study. Shell thickness, Haugh unit score, yolk color, yolk weight, yolk cholesterol, and blood parameter... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3244578 Tue, 02 Feb 2010 00:00:00 +0100 3244578 http://www.medworm.com/index.php?rid=3218423&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20107920%26dopt%3DAbstract Authors: Negi JS, Singh P, Nee Pant GJ, Rawat MS Variations of micro- and macrominerals concentration in Swertia speciosa were determined by atomic absorption spectroscopy. The mineral elements showed significant changes in roots and leaves collected from different altitudes. Among all the elements, highest concentration (more than 2,000 mg/kg) of Ca and K were recorded in S. speciosa and the concentration of other elements analyzed in the study decreased in the order Fe>Na>Zn>Co>Li>Cu>Mn. PMID: 20107920 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3218423 Thu, 28 Jan 2010 00:00:00 +0100 3218423 http://www.medworm.com/index.php?rid=3218422&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20107921%26dopt%3DAbstract Authors: Tohno Y, Tohno S, Ongkana N, Suwannahoy P, Azuma C, Minami T, Mahakkanukrauh P To elucidate compositional changes of the limbic system with aging, the authors investigated age-related changes of elements in the hippocampus, dentate gyrus, and fornix and the relationships among elements by direct chemical analysis. After ordinary dissections at Nara Medical University were finished, the hippocampi, dentate gyri, and fornices were resected from identical cerebra of the subjects which consisted of 23 men and 23 women, ranging in age from 70 to 101 years. After ashing with nitric acid and perchloric acid, element contents were determined by inductively coupled plasma-atomic emission spectrometry. The average contents of P, Zn, and Na were significantly less in both the hippocampi ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3218422 Wed, 27 Jan 2010 00:00:00 +0100 3218422 http://www.medworm.com/index.php?rid=3218421&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20107922%26dopt%3DAbstract Authors: Panicker S, Swathy SS, John F, Madambath I NFkappaB is a major transcription factor that controls the expression of various genes. Its activation is a complex process that can be triggered by many agents and one among them is reactive oxygen species. The aim of this study was to investigate the effect of selenium on NFkappaB activation in rats induced with myocardial infarction by isoproterenol (ISP). The markers of myocardial infarction showed increased activity in the serum of rats induced with ISP compared to the group that was pretreated with selenium along with ISP. Cellular selenium status was also found to be very low in the ISP-induced group of rats. The concentration of cytosolic NFkappaB was comparatively lower in the ISP group than in the group treated with selenium... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3218421 Wed, 27 Jan 2010 00:00:00 +0100 3218421 http://www.medworm.com/index.php?rid=3212674&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20101474%26dopt%3DAbstract This study suggests that a decreased serum Zn concentration could be a cause of decreased reproductive performance in subclinically ketotic dairy cows. PMID: 20101474 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3212674 Tue, 26 Jan 2010 00:00:00 +0100 3212674 http://www.medworm.com/index.php?rid=3200945&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20094821%26dopt%3DAbstract Authors: Szybiński Z, Walas S, Zagrodzki P, Sokołowski G, Gołkowski F, Mrowiec H The purpose of this work was to determine trace element levels in urine and evaluate possible associations between urinary iodine concentration (UIC), other trace elements (Cr, Cu, Fe, Mn, Na, Se, Zn), toxic elements (Cd, Pb), anthropometrical measures (body weight and height), glycemic indices (serum insulin and glucose), and several parameters related to thyroid function (thyroid stimulating hormone, free thyroxine, antithyroid peroxidase antibodies, thyroid volume, and thyroid echogenicity) in pregnant women. One hundred sixty-nine participants were recruited. The whole study group, originating from Krakow region, comprised three subgroups belonging to three trimesters: I trimester (n ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3200945 Fri, 22 Jan 2010 00:00:00 +0100 3200945 http://www.medworm.com/index.php?rid=3194501&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20087788%26dopt%3DAbstract In this study, silver nanoparticles were prepared and used for separation and preconcentration of manganese from biological samples. The technical feasibility of silver nanoparticles for manganese removal was investigated under batch studies. The effects of different parameters such as pH of solution, time (t), amounts of PAN (E), and silver nanoparticles (N) on the adsorption of manganese by silver nanoparticle were investigated using factorial design and response surface methodology based on Box-Behnken design. Thermodynamic parameters indicate the adsorption process to be exothermic. The limit of detection of the proposed method followed by inductively coupled plasma was found to be 0.08 microg L(-1). The method was applied to determine of manganese in biological samples. PMID: 2008... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3194501 Wed, 20 Jan 2010 00:00:00 +0100 3194501 http://www.medworm.com/index.php?rid=3194500&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20087789%26dopt%3DAbstract Authors: Bai C, Chen T, Cui Y, Gong T, Peng X, Cui HM The experiment was conducted with the objective of evaluating the effect of dietary high fluorine (F) on cell cycle and apoptosis of kidney in chickens by the methods of flow cytometry. Three hundred 1-day-old Avian broilers were divided into four groups and fed on control diet (F 23 mg/kg) and high F diets (400 mg/kg, high F group I; 800 mg/kg, high F group II; 1,200 mg/kg, high F group III) for 6 weeks. As tested by flow cytometry, the percentage of renal cell apoptosis was increased with increasing of dietary F, and it obviously rose in three high F groups when compared with that of control group. Renal cells in G(0)/G(1) phase were much higher, and renal cells in S phase, G(2)+M phase, and proliferation index value were much low... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3194500 Wed, 20 Jan 2010 00:00:00 +0100 3194500 http://www.medworm.com/index.php?rid=3194499&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20087790%26dopt%3DAbstract Authors: Ebrahimpour M, Mushrifah I This paper aims to compare the Cd, Cu, and Pb concentration in the bone, gills, and muscle of the seven fish species sampled during normal and dry seasons. Cadmium, Cu, and Pb concentrations varied significantly depending on the type of the tissue and season. Bone samples of the Osteochilus hasseltii showed the highest concentrations of Pb (6.08 mug/g dw) during September (the dry season), whereas bone samples of the Puntioplites bulu showed the lowest concentrations of Cd (0.08 mug/g dw) during September. Muscle samples of the P. bulu indicated the highest concentrations of Cu (2.58 mug/g dw) during March (the normal season). On the other hand, muscle samples of Channa straitus sowed the lowest concentrations of Cd (0.04 mug/g dw) during July (the d... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3194499 Wed, 20 Jan 2010 00:00:00 +0100 3194499 http://www.medworm.com/index.php?rid=3194503&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20084467%26dopt%3DAbstract Authors: Singh P, Negi JS, Rawat MS, Nee Pant GJ Present investigation was carried out to estimate mineral elements in Rheum emodi Wallr. by atomic absorption spectroscopy. The samples of R. emodi Wallr., both wild and cultivate populations, were collected from different localities at different altitudes of Uttarakhand, India. The concentration of micro- and macroelements was different in roots and leaves. The concentration of mineral elements was found in both the leaves and roots in the order of K > Ca > Fe > Mn > Na > Zn > Co > Li > Cu. PMID: 20084467 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3194503 Tue, 19 Jan 2010 00:00:00 +0100 3194503 http://www.medworm.com/index.php?rid=3194502&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20084468%26dopt%3DAbstract Authors: Shirabe T, Omura M, Osaki Y, Yoshimura E Growth of Cyanidioschyzon merolae was inhibited depending on the cadmium(II) concentration in the culture medium. Although a lower level (0.01 mM) of Cd(II) inhibited growth by a factor of 0.5, higher levels (0.1 and 1 mM) induced lag periods of 10-14 days. Algal cells pretreated with 1 mM Cd(II) for 27 days grew steadily in 1 mM Cd(II) without the lag period, demonstrating that the cells became Cd(II) resistant (CdR). Cells remained resistant after four cycles (7 days per cycle) of washing and re-growing in medium without Cd(II), while intracellular Cd(II) decreased to undetectable levels. These results suggest that the Cd(II)-resistant phenotype is heritable. This phenomena may be attributable to the presence of genetic inhomogeneity ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3194502 Tue, 19 Jan 2010 00:00:00 +0100 3194502 http://www.medworm.com/index.php?rid=3176872&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20077031%26dopt%3DAbstract Authors: Tubek S, Bunio A, Szyguła R, Krasowski G The elemental composition of rainwater is a suitable indirect indicator of the presence of chemical elements in airborne dust. As such, rainwater is considered a suitable monitor for environmental or natural pollution. The yearly content of chemical elements in rainwater may be considered a good indicator for determining the influence of these environmental factors on human body. We decided to investigate the relationship between chemical elements in rainwater and the frequency of hospitalizations for atrial fibrillation (I48, ICD10) on the population of the region of Opole Voivodship, Poland during the years 2000-2002. The voivodship or province has a population of one million and is divided into 12 counties that have between 44,... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3176872 Thu, 14 Jan 2010 00:00:00 +0100 3176872 http://www.medworm.com/index.php?rid=3171781&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20066505%26dopt%3DAbstract Authors: Lohakare J, Pattanaik A, Khan SA In order to assess the influence of dietary protein levels on the fluoride (F) bioavailability, 30 crossbred calves (6-8 months; approximately 104 kg BW) initially exposed to different dietary protein levels were allotted into six groups in a 3 x 2 factorial design. The factors included three different levels of protein viz. normal (100%; NP), low (75%; LP), and high (125%; HP) as per Kearl recommendations besides two levels of supplemental fluorine (as sodium fluoride) at 0 or 200 mg/kg diet. The animals were fed on the respective concentrate mixture and wheat straw for 210 days. A metabolism trial was conducted at 200 days post-feeding to study digestibility, plane of nutrition, and nutrient balances. The final body weight at the end of 210 d... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3171781 Tue, 12 Jan 2010 00:00:00 +0100 3171781 http://www.medworm.com/index.php?rid=3157841&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20058194%26dopt%3DAbstract Authors: Ding L, Li X, Liu P, Li S, Lv J The biological effect of Se and Cu(2+) on Escherichia coli (E. coli) growth was studied by using a 3114/3236 TAM Air Isothermal Calorimeter, ampoule method, at 37 degrees C. From the thermogenesis curves, the thermokinetic equations were established under different conditions. The kinetics showed that a low concentration of Se (1-10 mug/mL) promoted the growth of E. coli, and a high concentration of Se (>10 mug/mL) inhibited the growth, but the Cu(2+) was always inhibiting the growth of E. coli. Moreover, there was an antagonistic or positive synergistic effect of Se and Cu(2+) on E. coli in the different culture medium when Se was 1-10 mug/ml and Cu(2+) was 1-20 mug/ml. There was a negative synergistic effect of Se and Cu(2+) on E. coli when... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3157841 Fri, 08 Jan 2010 00:00:00 +0100 3157841 http://www.medworm.com/index.php?rid=3146698&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20049553%26dopt%3DAbstract In conclusion, exposure to high levels of fluoride compromises hair follicle growth and accelerate cell apoptosis in vitro. The toxicity of fluoride can be reduced by selenium, at least partially via the suppression of intracellular oxidative stress. PMID: 20049553 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3146698 Tue, 05 Jan 2010 00:00:00 +0100 3146698 http://www.medworm.com/index.php?rid=3146697&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20049554%26dopt%3DAbstract Authors: Riyahi-Alam N, Behrouzkia Z, Seifalian A, Haghgoo Jahromi S Nanosized materials of gadolinium oxide can provide high-contrast enhancement in magnetic resonance imaging (MRI). The aim of this research was to characterize a novel emulsion composed of a silicon-based nanocomposite polymer (NCP) and gadolinium (III) oxide (Gd(2)O(3)) nanoparticles. The size and morphological structure of this nanoparticle are determined by particle size analysis device (zeta sizer) and transmission electronic microscope. We determined composition of Gd(2)O(3) nanoparticles with energy dispersive X-ray analysis (EDXA) and magnetic resonance signal by T (1)-weighted MRI. Cytotoxicity of Gd(2)O(3) nanoparticles in SK-MEL-3 cancer cells was evaluated. Zeta sizer showed Gd(2)O(3) nanoparticles to be 75... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3146697 Tue, 05 Jan 2010 00:00:00 +0100 3146697 http://www.medworm.com/index.php?rid=3135746&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20041314%26dopt%3DAbstract Authors: Rębacz E, Baranowska-Bosiacka I, Chlubek D Research works that would determine the content of chemical elements in black population organisms on the basis of hair analysis are not numerous. There are no studies referring to black populations living in indigenous environment, like the Mafinga region, Iringa District in Tanzania examined by us. The aim of the study performed was to analyse the content of chemical elements Fe, Ca, Mg, Zn and Cu in easily available biological media like hair. The material was collected in October 2005 and March 2006 during anthropological examination, which came from young males (n = 91), students of a secondary school. Large Ca concentration range was found for the total number of subjects (680.20 to 2,089.70 microg/g d.m.). Mean Fe content... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3135746 Wed, 30 Dec 2009 00:00:00 +0100 3135746 http://www.medworm.com/index.php?rid=3129925&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20039145%26dopt%3DAbstract Authors: Padma VV, Devi CS, Kalaiselvi P The present study evaluated the protective effect of fish oil in isoproterenol-induced myocardial infarction in rats. The results of the present study indicate that the IPH administration decreases the activities of membrane-bound ATPases compared to control animals. Fish oil pretreatment brought about significant increase in the activity of these membrane-bound ATPases in IPH (isoproterenol hydrochloride)-treated animals. Significant increase in serum potassium level with concomitant decrease in the values of sodium, magnesium, and calcium were observed in IPH-treated rats compared to control rats, fish oil pretreatment reversed these changes to near normal. Significant elevation of sodium and calcium levels with concomitant decrease in the lev... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3129925 Tue, 29 Dec 2009 00:00:00 +0100 3129925 http://www.medworm.com/index.php?rid=3129924&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20039146%26dopt%3DAbstract Authors: Pakfetrat M, Malekmakan L, Hasheminasab M In this cross-sectional study, selenium (Se) levels in the sera of 35 hemodialysis (HD) patients and 34 patients undergoing continuous ambulatory peritoneal dialysis (CAPD) for more than 3 months were compared with the serum Se levels of 34 healthy volunteers. The observed Se levels of 100.8 +/- 51.9 microg/L in the sera of the HD patients and of 65.5 +/- 32.1 microg/L in the sera of the CAPD patients were significantly lower than the 134.9 +/- 81.2 microg/L of the controls, with p = 0.002 and 0.02, respectively. Furthermore, the Se levels were significantly higher in the HD rather than the CAPD patients (p = 0.01). In the spent dialysate effluent fluid of 32 of the CAPD patients Se was undetectable, in the remaining two CAPD patients ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3129924 Tue, 29 Dec 2009 00:00:00 +0100 3129924 http://www.medworm.com/index.php?rid=3129923&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20039147%26dopt%3DAbstract Authors: Bushra M, Elhassan EM, Ali NI, Osman E, Bakheit KH, Adam II Anaemia is a widespread problem in many parts of the world especially in tropic areas. Among pregnant women, it has negative consequences on maternal and perinatal outcomes. A cross-sectional study was conducted to investigate the prevalence of anaemia, iron, zinc and copper deficiencies among pregnant women in Wad Medani hospital, central Sudan and to examine the relationship of these micronutrients with haemoglobin (Hb) levels. One hundred four (52.5%) out of 200 pregnant women had anaemia (Hb < 11 gm/dl) and 3 (1.5) % had severe anaemia (Hb < 7 gm/dl). Iron deficiency (S-ferritin < 15 microg/l), iron deficiency anaemia (<11 gm/dl and S-ferritin < 15 microg/l) were prevalent in 25 (12.5%) and 13 (6.5%... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3129923 Tue, 29 Dec 2009 00:00:00 +0100 3129923 http://www.medworm.com/index.php?rid=3129922&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20039148%26dopt%3DAbstract In this study, 26 female patients diagnosed with iron deficiency were treated approximately 3 months of oral iron supplementation (99 +/- 10 days; ferrous glycine sulfate; 100 mg/day of elemental iron). Levels of sICAM-1 and sVCAM-1 were assessed prior to treatment and after approximately 3 months of treatment and compared with 26 healthy female subjects. A significant increase in sVCAM levels was found in the patients with iron deficiency at the end of the treatment relative to pretreatment levels compared to controls, whereas no significant differences were determined in sICAM levels. In the posttreatment period, no significant change was observed in sICAM levels compared to the pretreatment levels, whereas sVCAM levels decreased. However, after the treatment period, the sVCAM, hemoglobi... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3129922 Tue, 29 Dec 2009 00:00:00 +0100 3129922 http://www.medworm.com/index.php?rid=3129921&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20039149%26dopt%3DAbstract This study demonstrates that concentrations of serum sodium, potassium, and chloride remain unchanged during pregnancy and lactation whereas serum copper concentrations increased and zinc concentrations decreased with advancing pregnancy because of the demand of the fetus at different periods of pregnancy. PMID: 20039149 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3129921 Tue, 29 Dec 2009 00:00:00 +0100 3129921 http://www.medworm.com/index.php?rid=3122536&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20033793%26dopt%3DAbstract Authors: Tan C, Chen H, Xia C The relationship between the mortality of leukemia and the contents of trace elements in the soils of 29 regions of China was investigated. A total of 27 elements were determined for each region. Considering that an efficient variable selection can be highly beneficial both to improve the predictive ability of the model and to greatly reduce its complexity, genetic algorithm-partial least squares was used to screen out 13 qualified elements. As a result, only 13 elements, i.e., As, Hg, Mn, Sr, Ba, Cu, Ti, Co, K, Ca, Rb, Zn, and Mg, were picked out and, a partial least squares model with three latent variables was obtained, whose prediction exhibited a correlative coefficient of 0.874 with actual mortality. Especially, it showed a high negative correlation ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3122536 Thu, 24 Dec 2009 00:00:00 +0100 3122536 http://www.medworm.com/index.php?rid=3105364&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20013356%26dopt%3DAbstract Authors: Mikulewicz M, Chojnacka K The paper discusses various approaches used to investigate biocompatibility by the analysis of metals release by the materials of which orthodontic appliances are made. Analysis of various biomarkers of exposure: saliva, serum, mucosa cells, or urine is used in in vivo tests. In this work, the techniques, results, and conclusions of original papers were compared by the implementation of the concept of a systematic review. The aim of the present work was to report the state-of-the-art in the research on methods used to assess exposure to trace metals from orthodontic appliances. The PubMed search identified 35 studies, among which nine met the selection criteria. The general conclusion in the studies was that metal ions were released mostly in the init... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105364 Wed, 16 Dec 2009 00:00:00 +0100 3105364 http://www.medworm.com/index.php?rid=3105363&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20013357%26dopt%3DAbstract Authors: Norouzian MA, Valizadeh R, Khadem AA, Afzalzadeh A, Nabipour A The effects of feeding clinoptilolite on hematology, performance, and health of newborn Balouchi lambs were evaluated in this experiment. In a completely randomized design, 30 newborn lambs were allocated to three groups and fed by basal diet (C0; without clinoptilolite) and C1 and C2 (the basal diet plus 1.5% and 3% clinoptilolite, respectively, for 6 weeks (3 weeks before and 3 weeks after weaning)). Blood samples were taken from all lambs, at the time when the animals were allocated to the experimental diet and at the end of each week of experiment, and analyzed for hematology, plasma fibrinogen, and total protein. Performance and health of all lambs were measured. Fecal consistency score and diarrhea severity w... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105363 Wed, 16 Dec 2009 00:00:00 +0100 3105363 http://www.medworm.com/index.php?rid=3105366&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20013160%26dopt%3DAbstract Authors: Peng Z, Qiao W, Wang Z, Dai Q, He J, Guo C, Xu J, Zhou A The aim of this study was to evaluate the impact of three different chromium forms-chromic chloride (CrCl(3)), chromium picolinate (CrPic), and a newly synthesized complex of chromium chelated with small peptides (CrSP)-on protein metabolism in vitro. In cultured skeletal muscle cells, CrSP was able to increase the basal and insulin-stimulated levels of protein deposition in skeletal muscles cells. CrCl(3) and CrPic augmented insulin-stimulated protein synthesis. At the molecular level, insulin significantly increased the mRNA levels of insulin-like growth factor 1 and insulin-like growth factor 1 receptor. These impacts could be enhanced by the addition of chromium, especially CrSP. The mRNA levels of ubiquitin were sig... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105366 Tue, 15 Dec 2009 00:00:00 +0100 3105366 http://www.medworm.com/index.php?rid=3105365&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20013161%26dopt%3DAbstract Authors: Amani R, Saeidi S, Nazari Z, Nematpour S It has been suggested that mood disorders and depressive status may be accompanied by lowered zinc status in the body, and adequate consumption of zinc increases a general perceived well-being. The main objective of this study was to assess the correlation between serum zinc concentrations and dietary zinc intakes with depression scores in university female students. In the first phase, Beck's depression questionnaire was applied in a random sampling of 308 selected 20-25-year-old female students (one third of total students in Ahvaz Jondi-Shapour University of Medical Sciences Golestan dormitories) to assess the major depressive disorder (MDD) scales. Then, in the second phase, 23 students who identified as having moderate and severe d... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105365 Tue, 15 Dec 2009 00:00:00 +0100 3105365 http://www.medworm.com/index.php?rid=3105370&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20012381%26dopt%3DAbstract Authors: Yao X, Chu J, Ba C Effects of selenium (Se) on growth and some physiological traits of roots in wheat (Triticum aestivum L. cv Han NO.7086) seedlings exposed to enhanced ultraviolet-B (UV-B) stress are reported. Responses of roots were different depending on the Se concentration. Compared with the control, root weight of wheat seedlings treated with 1.0 and 2.0 mg Se kg(-1) soil increased by 39.47% and 16.28%, respectively. The lower amount Se (0.5 mg kg(-1)) and the higher amount Se treatments (3.0 mg kg(-1)) did not significantly affect on root weight. Se treatments significantly increased root activity, flavonoids and proline content, and activities of peroxidase and superoxide dimutase in wheat roots exposed to enhanced UV-B. In addition, the treatments with 0.5, 1.0, and ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105370 Thu, 10 Dec 2009 00:00:00 +0100 3105370 http://www.medworm.com/index.php?rid=3105369&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20012382%26dopt%3DAbstract Authors: Varol E, Akcay S, Ersoy IH, Ozaydin M, Koroglu BK, Varol S Sixty-three patients with endemic fluorosis (36 males/27 females; mean age 33.9 +/- 8.6 years) and 45 age-, sex-, and body mass index-matched healthy controls (30 males/15 females; mean age 32.7 +/- 8.8 years) were included in this study. Aortic stiffness indices, aortic strain (AS), aortic distensibility (AD), and aortic strain index (ASI) were calculated from the aortic diameters measured by echocardiography and blood pressure obtained by sphygmomanometry. The urine fluoride levels of fluorosis patients were significantly higher than control subjects as expected (1.9 +/- 0.1 mg/l vs. 0.4 +/- 0.1 mg/l, respectively; P < 0.001). AS and AD were significantly lower in fluorosis patients than in the controls (for AS 5.... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105369 Thu, 10 Dec 2009 00:00:00 +0100 3105369 http://www.medworm.com/index.php?rid=3105368&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20012383%26dopt%3DAbstract In this study, the effects of cadmium toxicity and the protective effects of L: -carnitine on spermatogenesis in Sprague-Dawley rat were evaluated. Animals were subdivided into five groups. Cadmium chloride (1-mg/kg body weight) was injected intraperitoneally during 16 days at intervals of 48 h between subsequent treatments. L: -Carnitine (500 mg/kg b.w., IP) was pretreated in both of control and cadmium-injected rats. Animals were killed on day 17 after the first treatment. The left cauda epididymis was removed and immediately immersed into Hank's balanced salt solution for evaluation of sperm count and viability. Following contamination with cadmium, a decrease in the number and viability of cauda epididymis sperm, the number of cell proliferation, and Johnsen Scores in the seminiferous ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105368 Thu, 10 Dec 2009 00:00:00 +0100 3105368 http://www.medworm.com/index.php?rid=3105367&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D20012384%26dopt%3DAbstract Authors: Opydo-Szymaczek J, Opydo J The aim of the study was to assess salivary fluoride concentrations and ingestion of fluorides after five different techniques of topical fluoride treatment. Ten volunteers received applications of fluoride gel, toothpaste, and foam. Fluoride concentrations were determined using ion-selective fluoride electrode in the samples of unstimulated saliva before and after procedures. The amounts of fluoride applied, recovered from the mouth, and retained in the mouth were calculated for each treatment. It was proved that fluoride ingestion following tray application of fluoride foam was significantly lower than ingestion following tray applications of fluoride gel (p < 0.01). The use of limited amounts of fluorides on a tray resulted in similar fluoride ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3105367 Thu, 10 Dec 2009 00:00:00 +0100 3105367 http://www.medworm.com/index.php?rid=3064988&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19967468%26dopt%3DAbstract Authors: Keser G, Saygideger S The aim of the present study is to evaluate the oxidative effects of lead with increased concentrations by the determination of antioxidant enzyme activities (superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), and ascorbate peroxidase (AP)) and lipid peroxidation levels in the stem and leaves of watercress (Nasturtium officinale R. Br.) which was exposed to lead acetate, Pb (CH(3)COOH)(2) regime with concentrations of 0, 50, 100, 200, 250, and 500 mg/L Pb in a hydroponic culture. After 14 days, accumulation of lipid peroxidation in stems and leaves and changes in activity of antioxidant enzymes were determined spectrophotometrically. The maximum accumulation was observed in the highest concentration group. In this group, lipid peroxid... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3064988 Sat, 05 Dec 2009 00:00:00 +0100 3064988 http://www.medworm.com/index.php?rid=3057160&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19957050%26dopt%3DAbstract In conclusion, Cu, Se, and Zn were higher in the rural group compared to the urban group, and the generally low Zn levels were confirmed in another cohort follow-up study. PMID: 19957050 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3057160 Thu, 03 Dec 2009 00:00:00 +0100 3057160 http://www.medworm.com/index.php?rid=3057159&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19957051%26dopt%3DAbstract In this study, we characterized the response of hippocampal neurons to a model of progressive corticosterone condition. We found that increasing extracellular corticosterone-induced iron accumulation killed a large proportion of neurons. Iron concentrations were significantly increased in the corticosterone-treated cells. In the hippocampal neurons, corticosterone decreased expression of ferritin and increased expression of transferrin receptor1 (TfR1), iron regulatory protein1 (IRP1), and divalent metal transporter 1. Corticosterone-induced elevation of IRP1 expression can cause increase of TfR1 and decrease of ferritin expression, which further leads to iron accumulation in hippocampal neurons and subsequently increases the oxidative damage of the neurons; it is indicated that corticoste... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3057159 Thu, 03 Dec 2009 00:00:00 +0100 3057159 http://www.medworm.com/index.php?rid=3048931&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19946757%26dopt%3DAbstract The objective of the study was to ascertain the effects of plethoric supplementation of copper (Cu), manganese (Mn), and zinc (Zn) on performance and metabolic responses in broiler chickens. The study also aimed to discriminate the responses of the birds when the mineral elements were supplemented either in an inorganic or in an organic form. Cobb 400 broiler chickens (1-day old, n = 300) were assigned to three dietary treatments each containing nine replicates with ten birds for 39 days. The treatments included a control in which the diet was devoid of supplemental trace elements and treatments supplemented with an inorganic trace element premix (ITM) and supplemented with a combination of the inorganic and an organic trace element premix (OTM). The ITM contained (per kilogram) copper, 15... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3048931 Sat, 28 Nov 2009 00:00:00 +0100 3048931 http://www.medworm.com/index.php?rid=3048930&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19946758%26dopt%3DAbstract Authors: Andreani G, Cottignoli S, Perfetti B, Kismali G, Carpenè E, Isani G Trace metals such as Zn, Cu, and Fe are essential for life; differently, no biochemical function is known for Cd. Changes in dietary metal concentrations can cause deficiency or toxicity. Studies on trace elements in cat are lacking. This paper aimed to analyze Zn, Cu, Fe and Cd concentrations in liver and kidney of pathological domestic cat and to isolate metallothionein (MT) in these tissues. It was not possible to explore a possible correlation between metal concentrations and pathologies because the incidence for each of them was too low. Fe was the most abundant metal; in particular, the liver accumulates average Fe concentrations one order of magnitude higher than Zn and Cu, ranging from 66.75 and 1... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3048930 Sat, 28 Nov 2009 00:00:00 +0100 3048930 http://www.medworm.com/index.php?rid=3036418&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19943121%26dopt%3DAbstract Authors: Verma S, Reddy K, Balakumar P The present study has been designed to investigate the effect of benfotiamine, a thiamine derivative, in sodium arsenite-induced vascular endothelial dysfunction (VED) in rats. Sodium arsenite (1.5 mg(-1) kg(-1) day(-1) i.p., 2 weeks) was administered in rats to produce VED. The development of VED was assessed by employing isolated aortic ring preparation and estimating the serum and aortic concentrations of nitrite/nitrate. Further, the integrity of vascular endothelium in thoracic aorta was assessed by scanning electron microscopy. Moreover, the oxidative stress was assessed by estimating serum thiobarbituric acid reactive substances (TBARS) and aortic superoxide anion generation. The administration of sodium arsenite markedly produced VED by at... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3036418 Fri, 27 Nov 2009 00:00:00 +0100 3036418 http://www.medworm.com/index.php?rid=3031305&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19937281%26dopt%3DAbstract In conclusion, zinc seems to be an effective treatment option against IRI. PMID: 19937281 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3031305 Tue, 24 Nov 2009 00:00:00 +0100 3031305 http://www.medworm.com/index.php?rid=3008963&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19921117%26dopt%3DAbstract The objective of this project was to conduct a preliminary investigation on the blood lead level of Tibetan youth. Chinese Han youth's BLL was also investigated as a control group. A total of 846 Tibetan youth and 785 Han youth were tested for BLL from September to October in 2007. Both of the mean BLL (6.4 mug/dL) and the frequency of high BLL (>/=10 mug/dL) of Tibetan youth (7.7%, 65 of 846) were lower than those of Han youth (6.7 mug/dL; 13.2%, 104 of 785). But they are still higher compared with the BLL of youth in developed countries (1.1 microg/dL; USA 2005 census). The BLL of boys was significantly higher than that of girls, both in Tibetan and Han youth (p = 0.033 and p = 0.000, respectively). The study shows that Chinese Han and Tibetan youth's lead poisoning prevention and tre... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3008963 Wed, 18 Nov 2009 00:00:00 +0100 3008963 http://www.medworm.com/index.php?rid=3008965&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19921115%26dopt%3DAbstract Authors: Dagli CE, Tanrikulu AC, Koksal N, Abakay A, Gelen ME, Demirpolat G, Yuksel M, Atilla N, Tolun FI Coppersmith is a worker who uses copper most commonly for the production of kitchen appliances in Turkey. This is an ancient occupation practiced for centuries in Turkey. Our objective was to investigate the prevalence of parenchymal lung diseases among coppersmiths in Kahramanmaras city in Turkey. Thirty coppersmiths were included to the study, and they all signed an informed consent. Demographics, spirometric test results and high-resolution computed tomography (HRCT) scans, and blood samples were obtained. Laboratory analysis of the serum samples showed that serum copper levels of the subjects were 0.93 +/- 0.14 mg/L. Serum copper level in control group was found as 0.70 +/- 0.1... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3008965 Tue, 17 Nov 2009 00:00:00 +0100 3008965 http://www.medworm.com/index.php?rid=3008964&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19921116%26dopt%3DAbstract Authors: Chen HI, Chiu YW, Hsu YK, Li WF, Chen YC, Chuang HY The goal of this study is to investigate if metallothionein (MT) gene polymorphism affects the susceptibility to lead as well as renal function parameters and blood pressures (BP) in workers exposed to lead for extended period of time. By means of real-time polymerase chain reaction, the MT4-216 A/G genotypes classified as rs396230 in the single nucleotide polymorphism database of the National Center for Biotechnology Information (database) were analyzed on 113 workers of a lead battery-recycling factory. Workers with G (mutant) allele were more susceptible to the toxic effects of lead on their systolic BP and serum renal function parameters. Their BP was 10 mmHg higher than those with wild-type (AA type) allele. Among subjec... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3008964 Tue, 17 Nov 2009 00:00:00 +0100 3008964 http://www.medworm.com/index.php?rid=3000524&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19915804%26dopt%3DAbstract Authors: Xu H, Liu QY, Zhang JM, Zhang H, Li GS Study on the role of parathyroid hormone (PTH) and parathyroid hormone-related peptide (PTHrp) in the process of skeletal fluorosis, involved especially in calcium deficiency, is rare. We evaluated the level of serum PTH and mRNA expression of PTHrp in femur when rats were exposed to excessive fluoride with low-calcium diet. Wistar rats (n = 60) was divided into four groups, a control group, fluoride group, low-calcium group, and low-calcium fluoride group. The fluoride groups were treated with fluoride by drinking tap water containing 100 mg F-/L. The low-calcium diet contained 0.05% calcium. Serum was collected in the first, fourth, eighth, and 12th of phase for the detemination of PTH and Ca(2+). RNA extraction from femora was used to ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3000524 Sat, 14 Nov 2009 00:00:00 +0100 3000524 http://www.medworm.com/index.php?rid=3000525&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19911118%26dopt%3DAbstract Authors: Xi L, Tian Z, Hongyu X, Peng L By means of microcalorimetry, the effect of four copper(II) complexes on Tetrahymena growth was investigated. The extent and duration of the inhibitory effect on the metabolism, judged by the rate constant, k, and the half inhibition concentration, IC(50), varied with the different complexes. The results showed that the half inhibition concentrations IC(50) of CuCl(2), (C(9)H(6)NO)(2)Cu and [Cu(phen)(2)]Cl(2)[Symbol: see text]6H(2)O were 9.9 x 10(-4), 2.0 x 10(-4), and 2.6 x 10(-4) mol/L, respectively. The sequence of antibiotic activity of these three complexes was: (C(9)H(6)NO)(2)Cu > [Cu(phen)(2)]Cl(2)[Symbol: see text]6H(2)O > CuCl(2). The growth rate constants of [Cu(phen)(3)]Cl(2)[Symbol: see text]6H(2)O did not change obviously with ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=3000525 Fri, 13 Nov 2009 00:00:00 +0100 3000525 http://www.medworm.com/index.php?rid=2990103&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19907928%26dopt%3DAbstract Authors: Tohno S, Ongkana N, Ke L, Mahakkanukrauh P, Minami T, Suwannahoy P, Sinthubua A, Tohno Y To examine whether there were gender differences in the various brain regions, the authors investigated the gender differences in seven element contents of the anterior commissure, mammillary body, and olfactory bulb and tract by direct chemical analysis. After ordinary dissection at Nara Medical University was finished, the anterior commissures, mammillary bodies, and olfactory bulbs and tracts were resected from the cerebra cut at median line. The brain samples were treated with 99.5% ethanol three times to remove lipids. After ashing with nitric acid and perchloric acid, the seven element contents Ca, P, S, Mg, Zn, Fe, and Na were determined by inductively coupled plasma-atomic emission... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2990103 Thu, 12 Nov 2009 00:00:00 +0100 2990103 http://www.medworm.com/index.php?rid=2984537&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19904501%26dopt%3DAbstract This study describes the effects of fluoride exposure on the protein profile, glycoprotein pattern, and total sialic acid concentration of serum in rabbits. For this aim; 20 healthy New Zealand rabbits were used. The rabbits were divided into two equal groups each with ten animals according to their weighing: control group and experimental group. The rabbits in control group were given drinking tap water containing 0.29 mg/l sodium fluoride and experimental group received the same tap water to which was added 40 mg/l sodium fluoride for 70 days. Blood samples were taken from each rabbit on day 70. Serum fluoride concentrations were measured by a fluoride-specific ion electrode in serum. The fluoride levels in the serum were found as 18.4 (+/-1.58) mug/L in control and 301.3 (+/-52.18) mug/... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2984537 Wed, 11 Nov 2009 00:00:00 +0100 2984537 http://www.medworm.com/index.php?rid=2984541&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19902158%26dopt%3DAbstract In conclusion, there was an obvious synergistic oxidative damage effect of lead combined with cadmium on rat kidney cortex mitochondria, which increased defects in mitochondrial oxidative metabolism. PMID: 19902158 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2984541 Tue, 10 Nov 2009 00:00:00 +0100 2984541 http://www.medworm.com/index.php?rid=2984540&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19902159%26dopt%3DAbstract Authors: Hazane-Puch F, Benaraba R, Valenti K, Osman M, Laporte F, Favier A, Anderson RA, Roussel AM, Hininger-Favier I While the toxicity of hexavalent chromium is well established, trivalent chromium is an essential nutrient involved in insulin and glucose homeostasis. To study the antioxidant effects of Cr(III)His, cDNA arrays were used to investigate the modulation of gene expression by trivalent chromium histidinate (Cr(III)His) in HaCaT human keratinocytes submitted to hydrogen peroxide (H(2)O(2)). Array was composed by a set of 81 expressed sequences tags (ESTs) essentially represented by antioxidant and DNA repair genes. HaCaT were preincubated for 24 h with 50 muM Cr(III)His and were treated with 50 muM H(2)O(2). Total RNAs were isolated immediately or 6 h after the stress. In... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2984540 Tue, 10 Nov 2009 00:00:00 +0100 2984540 http://www.medworm.com/index.php?rid=2984539&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19902160%26dopt%3DAbstract Authors: Sharma V, Kansal L, Sharma A Lead poisoning is a worldwide health problem, and its treatment is under investigation. The aim of this study was to access the efficacy of Coriandrum sativum (coriander) in reducing lead-induced changes in mice testis. Animal exposed to lead nitrate showed significant decrease in testicular SOD, CAT, GSH, total protein, and tissue lead level. This was accompanied by simultaneous increase in the activities of LPO, AST, ALT, ACP, ALP, and cholesterol level. Serum testosterone level and sperm density were suppressed in lead-treated group compared with the control. These influences of lead were prevented by concurrent daily administration of C. sativum extracts to some extent. Treating albino mice with lead-induced various histological changes in the ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2984539 Tue, 10 Nov 2009 00:00:00 +0100 2984539 http://www.medworm.com/index.php?rid=2984538&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19902161%26dopt%3DAbstract The objective of this study was to determine the level of zinc (Zn), copper (Cu), iron (Fe), Selenium (Se), and chromium (Cr) in the brain of rats treated with vincamine. Vincamine was injected i.m. to rats at a dose of 15 mg/Kg bodyweight daily for 14 days. Twenty-four hours after the last injection, rats were killed, and brains were ashed and digested by concentrated acids and analyzed for trace elements concentrations by flame emission atomic absorption spectrophotometer. The results showed that Zn was the highest trace element in the brain of control rats (3.134 +/- 0.072 ppm) and Cr was the lowest (0.386 +/- 0.027 ppm). Vincamine administration significantly (p < 0.01) reduced the brain Fe concentration (1.393 +/- 0.165 ppm) compared to control (2.807 +/- 0.165 ppm). It was conclud... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2984538 Tue, 10 Nov 2009 00:00:00 +0100 2984538 http://www.medworm.com/index.php?rid=2977802&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19898754%26dopt%3DAbstract Authors: Lassoued S, Gargouri B, El Feki AE, Attia H, Van Pelt J While latent Epstein-Barr virus infection can be in vitro reactivated by various reagents such as 12-0-tetradecanoylphorbol-13-acetate and calcium ionophore, relatively little is known about in vivo physiological and biochemical factors implicated in this reactivation. Previous studies have described an association between oxidative stress and Epstein-Barr virus infection. In this present study, we investigated the effect of oxidative stress inductors: H(2)O(2) and FeSO(4) on reactivation of EBV through BZLF-1 gene expression. Oxidative stress was induced in Raji cell line with 0.2 mM H(2)O(2) or with 0.1 mM FeSO(4), and assessed by malondialdehyde level determination, as well as superoxide dismutase and catalase genes ex... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2977802 Sat, 07 Nov 2009 00:00:00 +0100 2977802 http://www.medworm.com/index.php?rid=2977801&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19898755%26dopt%3DAbstract Authors: Zaichick S, Zaichick V The effect of age and gender on 38 chemical element contents in femoral neck of 85 apparently healthy 15-55-year-old women (n = 38) and men (n = 47) was investigated by instrumental neutron activation analysis. Mean values (M +/- SEpsilonMu) for mass fraction (on dry weight basis) of Ca, Cl, Co, Fe, K, Mg, Mn, Na, P, Sr, and Zn for both female and male taken together were: Ca 153 +/- 3 g/kg, Cl 1,188 +/- 48 mg/kg, Co 0.0039 +/- 0.0004 mg/kg, Fe 55.5 +/- 8.8 mg/kg, K 490 +/- 22 mg/kg, Mg 1,940 +/- 48 mg/kg, Mn 0.385 +/- 0.015 mg/kg, Na 3,850 +/- 70 mg/kg, P 73.0 +/- 1.5 g/kg, Sr 288 +/- 18 mg/kg, and Zn 55.5 +/- 1.6 mg/kg, respectively. The upper limit of mean contents of Cr, Cs, Eu, Hg, Rb, Sb, Sc, and Se were: Cr </= 0.2, Cs </= 0.02, Eu </= 0.... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2977801 Sat, 07 Nov 2009 00:00:00 +0100 2977801 http://www.medworm.com/index.php?rid=2944175&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19865802%26dopt%3DAbstract Authors: Negi JS, Singh P, Nee Pant GJ, Rawat MS Concentration level of nine elements viz. Zn, Cu, Mn, Fe, Co, Na, K, Ca, and Li were determined in leaves and roots of Asparagus curillus (Buch.-Ham.) ex Roxb. collected from four different altitudes in three seasons by atomic absorption spectroscopy. The overall concentration of K was found to be highest, whereas the level of Cu was lowest. The maximum concentrations of Zn, Cu, Mn, Fe, Co, Na, K, Ca, and Li were found to be 97.0 +/- 1.5, 28.0 +/- 7.0, 44.0 +/- 7.3, 1138.0 +/- 18.5, 91.0 +/- 6.2, 381.0 +/- 7.8, 9508.0 +/- 7.8, 3076.0 +/- 6.4, and 78.0 +/- 4.6 mg/kg, respectively. PMID: 19865802 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2944175 Thu, 29 Oct 2009 00:00:00 +0100 2944175 http://www.medworm.com/index.php?rid=2944174&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19865803%26dopt%3DAbstract Authors: Gulaboglu M, Borekci B, Delibas I The aim of this study was to investigate the urine iodine concentration in women with severe preeclampsia and in healthy women in Erzurum, Turkey. Urine specimens were obtained from 40 severe preeclampsia and 18 healthy pregnant women. Urinary iodine levels were determined by the Foss method based on the Sandell-Kolthoff reaction. The urinary iodine level for women with severe preeclampsia was 4.25 +/- 2.7 microg/dL, lower than 20.89 +/- 6.4 microg/dL of urinary iodine for healthy pregnant women (p < 0.001). Blood magnesium concentration was found to be 1.63 +/- 0.05 mg/dL for women with severe preeclampsia, which is lower than that of healthy pregnant women (1.87 +/- 0.05 mg/dL; p < 0.001). There was a positive correlation between urina... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2944174 Thu, 29 Oct 2009 00:00:00 +0100 2944174 http://www.medworm.com/index.php?rid=2935211&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19859668%26dopt%3DAbstract Authors: Sakajiri T, Yamamura T, Kikuchi T, Ichimura K, Sawada T, Yajima H Human transferrin (Tf) very tightly binds two ferric ions to deliver iron to cells. Fe(III)(2)Tf (Fe(2)Tf) binds to the Tf receptor (TfR) at pH 7.4; however, iron-free Tf (apoTf) does not. Iron uptake is facilitated by endocytosis of the Fe(2)Tf-TfR complex. Tf can also bind aluminum ions, which cause toxic effects and are associated with many diseases. Since Al(III)(2)Tf (Al(2)Tf) does not bind to TfR, the uptake of aluminum by the cells does not occur through a TfR-mediated pathway. We have studied the absence of binding between Al(2)Tf and TfR by investigating the physicochemical characteristics of apoTf, Al(2)Tf, Fe(2)Tf, and TfR. The hydrodynamic radius of 38.8 A for Al(2)Tf obtained by dynamic light scatte... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2935211 Tue, 27 Oct 2009 00:00:00 +0100 2935211 http://www.medworm.com/index.php?rid=2923947&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19851721%26dopt%3DAbstract The objective of this study was to evaluate whether lead (Pb) and arsenic (As) levels in biological fluids were associated to the body composition in a group of reproductive-age women. Voluntary childbearing-age women (n = 107) were divided into three groups according to their body mass index (BMI: weight/height(2) (kg/m(2)): low weight (BMI<18.5 kg/m(2)), normal [Formula: see text], and overweight (BMI>25 kg/m(2)). Body composition and fat mass percentage were determined by the isotopic dilution method utilizing deuterated water. Blood lead concentrations were determined by graphite furnace atomic absorption spectrometry and urinary arsenic (AsU) concentrations by inductively coupled plasma mass spectrometry. The type and frequency of food consumption and lifestyle-related factors w... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2923947 Fri, 23 Oct 2009 00:00:00 +0100 2923947 http://www.medworm.com/index.php?rid=2909681&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19841869%26dopt%3DAbstract Authors: Gong X, Wang Y, Liu C, Wang S, Zhao X, Zhou M, Li N, Lu Y, Hong F The effects of Mn(2+) deficiency on light absorption, transmission, and oxygen evolution of maize chloroplasts were investigated by spectral methods. Several effects of Mn(2+) deficiency were observed: (1) the skeleton of pigment protein complexes and oxygen-evolving center and the combination between pigment and protein were damaged; (2) the light absorption of chloroplasts was obviously decreased; (3) the energy transfer among amino acids within PS II protein-pigment complex and decreased energy transport from tyrosine residue to chlorophyll a and from chlorophyll b and carotenoid to chlorophyll a were inhibited; (4) the oxygen-evolving of chloroplast was significantly inhibited. However, Mn(2+) addition decre... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2909681 Mon, 19 Oct 2009 23:00:00 +0100 2909681 http://www.medworm.com/index.php?rid=2909680&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19841870%26dopt%3DAbstract Authors: Duan Y, Li N, Liu C, Liu H, Cui Y, Wang H, Hong F In order to study the mechanisms underlying the effects of TiO(2) nanoparticles on lactate dehydrogenase (LDH, EC1.1.1.27), Institute of Cancer Research region mice were injected with nanoparticulate anatase TiO(2) (5 nm) of various doses into the abdominal cavity daily for 14 days. We then examined LDH activity in vivo and in vitro and direct evident for interaction between nanoparticulate anatase TiO(2) and LDH using spectral methods. The results showed that nanoparticulate anatase TiO(2) could significantly activate LDH in vivo and in vitro; the kinetics constant (Km) and Vmax were 0.006 muM and 1,149 unit mg(-1) protein min(-1), respectively, at a low concentration of nanoparticulate anatase TiO(2), and 3.45 and 0.031 muM a... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2909680 Mon, 19 Oct 2009 23:00:00 +0100 2909680 http://www.medworm.com/index.php?rid=2909679&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19841871%26dopt%3DAbstract Authors: Massadeh A, Gharibeh A, Omari K, Al-Momani I, Alomary A, Tumah H, Hayajneh W PMID: 19841871 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2909679 Mon, 19 Oct 2009 23:00:00 +0100 2909679 http://www.medworm.com/index.php?rid=2909678&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19841872%26dopt%3DAbstract Authors: Arrambide G, Barrio DA, Etcheverry SB, Gambino D, Baran EJ The dihydrated potassium salt of the complex anion [VO(O(2))NTA](2-) (NTA = nitrilotriacetate anion, [N(CH(2)-COO)(3)](3-)) was thoroughly characterized by electronic and vibrational (infrared and Raman) spectroscopies. The bioactivity of the complex on the cell proliferation was tested on three cell lines in culture (UMR106 rat osteosarcoma-derived cells, Caco-2 derived from a human colon adenocarcinoma, and RAW 264.7, a macrophage murine cell line). PMID: 19841872 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2909678 Mon, 19 Oct 2009 23:00:00 +0100 2909678 http://www.medworm.com/index.php?rid=2909677&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19841873%26dopt%3DAbstract In this report, we investigated the mechanisms of CeCl(3) on ALT activity in vivo and in vitro. Our results showed that Ce(3+) could significantly activate ALT in vivo and in vitro; the kinetics constant (Km) and Vmax were 0.018 microM and 1,380 unit mg(-1) protein min(-1), respectively, at a low concentration of Ce(3+), and 0.027 microM and 624 unit mg(-1) protein min(-1), respectively, at a high concentration of Ce(3+). By UV absorption and fluorescence spectroscopy assays, the Ce(3+) was determined to be directly bound to ALT; the binding site of Ce(3+) to ALT was 1.72, and the binding constants of the binding site were 4.82 x 10(8) and 9.05 x 10(7) L mol(-1). Based on the analysis of the circular dichroism spectra, it was concluded that the binding of Ce(3+) altered the secondary struc... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2909677 Mon, 19 Oct 2009 23:00:00 +0100 2909677 http://www.medworm.com/index.php?rid=2909682&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19838642%26dopt%3DAbstract Authors: Li S, Zhang J, Li J, Chen D, Matteucci M, Curd J, Duan JX Selenium-containing thioredoxin reductase (TrxR) is an important target of cancer therapy. Many useful anticancer agents including bis-alkylating agents, cisplatin, and arsenic trioxide are known to interact with the selenocysteine dipeptide in the carboxy terminal region of thioredoxin reductase and inactivate its ability to reduce thioredoxin. Some investigators have postulated that the inactivation of TrxR may add to the cytotoxic potential of these anticancer agents. TH-302 is a newly developed antineoplastic drug which represents a potential new class of tumor selective hypoxia-activated prodrugs (HAPs). TH-302 is an inactive prodrug created by the covalent conjugation of 2-nitroimidazole as an oxygen sensor to bro... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2909682 Fri, 16 Oct 2009 23:00:00 +0100 2909682 http://www.medworm.com/index.php?rid=2902000&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19834650%26dopt%3DAbstract In this study, we evaluated effects of sodium tungstate on enzymatic and nonenzymatic markers of oxidative stress in brain of streptozotocin (STZ)-induced diabetic rats. Rats were divided into four groups (ten rats in each group): untreated control, sodium tungstate-treated control, untreated diabetic, and sodium tungstate-treated diabetic. Diabetes was induced with an intraperitoneal STZ injection (65 mg/kg body weight), and sodium tungstate with concentration of 2 g/L was added to drinking water of treated animals for 4 weeks. Diabetes caused a significant increase in the brain thiobarbituric acid reactive substances (P < 0.01) and protein carbonyl levels (P < 0.01) and a decrease in ferric reducing antioxidant power (P < 0.01). Moreover, diabetic rats presented a reduction in b... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2902000 Thu, 15 Oct 2009 23:00:00 +0100 2902000 http://www.medworm.com/index.php?rid=2902003&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19830391%26dopt%3DAbstract Authors: Chu J, Yao X, Zhang Z Dose-dependent effects of selenium on growth and physiological trait of wheat seedlings (Triticum aestivum L. cv Han NO.7086) exposed to cold stress are reported. Responses of seedlings were different depending on the Se concentration. The treatments with 0.5 and 1.0 mg Se kg(-1) significantly increased biomass and chlorophyll content of seedlings. However, the treatments at 2.0 and 3.0 mg Se kg(-1) only induced an evident increase in chlorophyll content and did not promote biomass accumulation of seedlings. Antioxidant compounds content (anthocyanins, flavonoids, and phenolic compounds) and antioxidant enzymes' activities (peroxidase and catalase) increased by different Se treatments, while only the treatment with 1.0 mg Se kg(-1) induced a significant r... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2902003 Wed, 14 Oct 2009 23:00:00 +0100 2902003 http://www.medworm.com/index.php?rid=2902002&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19830392%26dopt%3DAbstract Authors: Lenartowicz M, Windak R, Tylko G, Kowal M, Styrna J Menkes disease is an effect of ATP7A gene mutation in humans, coding the Cu-ATP-ase which is essential in intestinal copper absorption and its subsequent transfer to circulation. This mutation results in a deficiency of copper in all tissues except the epithelia of intestine and kidney tubules. Subcutaneous injection of copper ions is the main therapy for Menkes patients. Mosaic (Atp7a(mo-ms)) mice closely simulate the situation in Menkes disease. The aim of this study was to evaluate the changes in structure and element content in kidneys of mosaic mice after copper supplementation. Hematoxylin-eosin staining was used to analyze tissue morphology and atomic absorption spectrometry to estimate Cu and Zn content. X-ray microan... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2902002 Wed, 14 Oct 2009 23:00:00 +0100 2902002 http://www.medworm.com/index.php?rid=2902001&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19830393%26dopt%3DAbstract Authors: Cherdwongcharoensuk D, João Oliveira M, Aguas AP The in vivo dynamics of selenium (Se) and mercury (Hg) interaction was studied in mouse tissues using direct visualization of individual Se, Hg, and SeHg particles on the surface of circulating erythrocytes. This high-resolution detection of Se and Hg was obtained by scanning electron microscopy coupled to X-ray microanalysis. BALB/c mice were injected in the peritoneal cavity with Se and Hg salts, and the animals were sacrificed 3 min after the Hg injection. Only a minority (9%) of the metal dots seen on mouse liver erythrocytes were SeHg complexes when Se and Hg salts were mixed together before injection. In contrast, the majority (73%) of metal dots on liver erythrocytes were SeHg complexes if Se was injected at least 5 ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2902001 Wed, 14 Oct 2009 23:00:00 +0100 2902001 http://www.medworm.com/index.php?rid=2895179&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19826776%26dopt%3DAbstract In conclusion, the present study not only points to the therapeutic potential of SLM in CP-induced kidney toxicity but also indicates a significant role for ROS and their relation to kidney dysfunction. PMID: 19826776 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2895179 Tue, 13 Oct 2009 23:00:00 +0100 2895179 http://www.medworm.com/index.php?rid=2895181&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19823775%26dopt%3DAbstract Authors: Kotyzová D, Cerná P, Lešetický L, Eybl V Although the metabolic and toxicological interactions between essential element selenium (Se) and toxic element cadmium (Cd) have been reported for a long time, the experimental studies explored mostly acute, high-dose interactions. Limited data are available regarding the effects of Se-deficiency on toxicokinetics of cadmium, as well as on the levels of key trace elements-copper, zinc, and iron. In the present study, male and female Wistar weanling rats (n = 40/41) were fed either Se-deficient or Se-adequate diet (<0.06 or 0.14 mg Se per kilogram diet, respectively) for 12 weeks, and from week 9 were drinking water containing 0 or 50 mg Cd/l as cadmium chloride. At the end of the 12-week period, trace element co... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2895181 Mon, 12 Oct 2009 23:00:00 +0100 2895181 http://www.medworm.com/index.php?rid=2895180&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19823776%26dopt%3DAbstract Authors: Gupta SK, Kalaiselvan V, Srivastava S, Saxena R, Agrawal SS Cataract is the opacification in eye lens and leads to 50% of blindness worldwide. The present study was undertaken to evaluate the anticataract potential of Trigonella foenum-graecum Linn seeds (fenugreek) in selenite-induced in vitro and in vivo cataract. In vitro enucleated rat lenses were maintained in organ culture containing Dulbecco's modified Eagles medium (DMEM) alone or in addition with 100 microM selenite and served as the normal and control groups, respectively. For the test group, the medium was supplemented with selenite and T. foenum-graecum aqueous extract. The lenses were incubated for 24 h at 37 degrees C. After incubation, the lenses were processed for the estimation of reduced glutathione (GSH), li... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2895180 Mon, 12 Oct 2009 23:00:00 +0100 2895180 http://www.medworm.com/index.php?rid=2887228&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19820904%26dopt%3DAbstract In conclusion, combined Cu and Fe administration in an aqueous solution does not inhibit Fe bioavailability. This information could help in the design of rational guidelines for copper and iron supplementation programs. Our results support the hypothesis that divalent metal transporter 1 is not physiologically relevant for copper absorption in humans. PMID: 19820904 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2887228 Fri, 09 Oct 2009 23:00:00 +0100 2887228 http://www.medworm.com/index.php?rid=2887225&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19820905%26dopt%3DAbstract Authors: Bouazizi H, Jouili H, Geitmann A, El Ferjani E Fourteen-day-old bean seedlings were cultured in nutrient solution containing Cu(2+) ions at various concentrations (50 and 75 microM of CuSO(4)) for 3 days. This excess of copper induced a reduction in the water volume absorbed by the plants. Moreover, this reduction was accompanied by an increase of the amount of copper taken up by the roots. Analysis by native gel electrophoresis of cell wall peroxidase activities in the roots revealed a stimulation of two anionic isoforms (A(2) and A(3)) under cupric stress conditions. Moreover, the activity of phenylalanine ammonia lyase (EC. 4.3.1.5), which plays an important role in plant defense, was enhanced. Copper-treated bean roots showed modifications in the cell walls of various tiss... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2887225 Fri, 09 Oct 2009 23:00:00 +0100 2887225 http://www.medworm.com/index.php?rid=2877142&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19812902%26dopt%3DAbstract Authors: Anetor JI, Ajose OA, Adeleke FN, Olaniyan-Taylor GO, Fasola FA Iron (Fe) remains a commonly prescribed supplement in pregnancy. Its possible pathologic potential is either uncommonly considered or ignored. We determined the antioxidant status in pregnant women with and without Fe supplements. Fifty-eight apparently healthy pregnant women on Fe supplements were selected for the study from the antenatal clinic of the University College Hospital, Ibadan, Nigeria. Fifty-five aged matched pregnant women who were not on Fe from various parishes of the Christ Apostolic Church, Ibadan (non-drug using Christian sect) were randomly selected as controls. Both groups were classified according to the trimesters of pregnancy. The gestational age in both pregnant women on Fe supplements and ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2877142 Wed, 07 Oct 2009 23:00:00 +0100 2877142 http://www.medworm.com/index.php?rid=2870142&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19806328%26dopt%3DAbstract Authors: Shen XS, Su Q, Qiu ZP, Xu JY, Xie YX, Liu HF, Liu Y The toxic effects of artesunate and dihydroartemisinin on the growth metabolism of Tetrahymena thermophila BF5 were studied by microcalorimetry. The results showed that: (1) low concentrations of artesunate (</=1 mg L(-1)) and dihydroartemisinin (</= 2 mg L(-1)) promoted the growth metabolism of T. thermophila BF5, whereas high concentrations of artesunate (1-60 mg L(-1)) and dihydroartemisinin (2-60 mg L(-1)) inhibited its growth; (2) the half inhibition concentrations IC(50) of artesunate and dihydroartemisinin were 17.5817 and 9.5089 mg L(-1), respectively. It was concluded that the inhibition of dihydroartemisinin was stronger than that of artesunate. PMID: 19806328 [PubMed - as supplied by publisher] (Source: B... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2870142 Mon, 05 Oct 2009 23:00:00 +0100 2870142 http://www.medworm.com/index.php?rid=2863132&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19802527%26dopt%3DAbstract Authors: Bunio A, Szygula R, Tubek S, Krasowski G Environmental factors significantly influence the incidence and course of metabolic syndrome diseases such as diabetes and obesity. The content of elements in rainwater is an indirect indicator of their presence in dust suspended in the air. In this paper we present the relationships between the content of selected elements in rainwater and hospitalization frequencies due to diabetes (E10-E13) and obesity (E66). It was assumed that the hospitalization frequency could be taken as a measure of deterioration of the metabolic process in the course of diabetes and its complications. The observations concerned the population of Opole Voivodeship, Poland (one million inhabitants), distributed in small communities of 44,000 to 151,000 inhabitan... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2863132 Fri, 02 Oct 2009 23:00:00 +0100 2863132 http://www.medworm.com/index.php?rid=2863131&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19802528%26dopt%3DAbstract Authors: Sobhanirad S, Carlson D, Bahari Kashani R Eighteen lactating dairy cows were used to compare the effects of organic and inorganic Zn supplements on milk production and chemical composition of milk. Animals received three diets in a randomized block design: basal diet with no supplemental Zn (control, 42 mg Zn/kg), basal diet plus 500 mg Zn/kg of dry matter (DM) as zinc sulfate monohydrate (ZnS) and basal diet plus 500 mg Zn/kg of DM as zinc methionine (ZnM). Results showed that milk and fat-corrected milk yield in dairy cows were not significantly affected by Zn source although a numerical increase was observed. The percentages of protein, lactose, fat, solid nonfat, total solid, and density of milk were not significantly different between treatments. However, dairy cows that ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2863131 Fri, 02 Oct 2009 23:00:00 +0100 2863131 http://www.medworm.com/index.php?rid=2855937&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19789845%26dopt%3DAbstract Authors: Kayan M, Nazıroğlu M, Barak C X-ray radiation is detrimental to human cells and may lead to development of life-threatening diseases. Cigarette paper and cigarette smoke contain toxic elements, whereas vitamins C and E (VCE) may have regulator effects on the elements. We investigated effects of VCE administration on X-ray-induced element changes in blood of smoker and nonsmoker X-ray technicians. Twenty technicians and 30 healthy age-matched control subjects were used in the study. Ten of the X-ray technicians and 15 of the control were smokers. Blood serum samples were taken from the control. Oral vitamins C (500 mg) and E (150 mg) were supplemented daily to the smoker and nonsmoker X-ray technicians for 5 weeks. Serum samples were taken from the X-ray technicians... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2855937 Tue, 29 Sep 2009 23:00:00 +0100 2855937 http://www.medworm.com/index.php?rid=2855936&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19789846%26dopt%3DAbstract Authors: Dai W, Fu L, Du H, Liu H, Xu Z In order to investigate the effects of montmorillonite (MMT) on reducing dietary lead (Pb) toxicity to tilapia (Oreochromis niloticus), 240 fish were randomly divided into four treatments denominated as follows: control treatment (fed with a basal diet), MMT treatment (fed with a basal diet added with 0.5% MMT), Pb treatment (fed with a basal diet added with 100 mg Pb per kilogram dry weight (dw)), and Pb + MMT treatment (fed with a basal diet added with 100 mg Pb per kilogram dw and 0.5% MMT). Changes in Pb accumulation, oxidative stress, and DNA damage in tilapia were measured after 60 days. DNA damage was assessed using comet assay. The results showed that MMT supplemented in diet significantly reduced Pb accumulation in kidney and blood of ti... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2855936 Tue, 29 Sep 2009 23:00:00 +0100 2855936 http://www.medworm.com/index.php?rid=2829026&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19777167%26dopt%3DAbstract Authors: Al-Qudah KM, Gharaibeh AA, Al-Shyyab MM The aim of this study was to determine the levels of trace minerals Zn, Cu, and Se, the effect of dermatophytosis on the level of thiobarbituric acid reactive substances (TBARS) as an indicator of lipid peroxidation, the status of enzymatic and nonenzymatic antioxidants, and the relationship between the mentioned trace minerals and antioxidant defense system in calves with dermatophytosis. A total of 21 Holstein calves with clinically established diagnosis of dermatophytosis and an equal number of healthy ones were included in this study. Results showed that 81% of mycotic isolates were Trichophyton verrucosum, while 19% were Trichophyton mentagrophytes. The level of Zn, Cu, Se, and glutathione (GSH) and the activity of the antioxidant e... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2829026 Wed, 23 Sep 2009 23:00:00 +0100 2829026 http://www.medworm.com/index.php?rid=2829025&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19777168%26dopt%3DAbstract This study shows that modified culture medium with that 0.0274% Mn(2+) can be used to promote the production for alpha- and beta-galactosidase in L. reuteri CF2-7F, which may lead to enhancement of alpha- and beta-galactosidase activity and have a good potential to be used in the food industry. PMID: 19777168 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2829025 Wed, 23 Sep 2009 23:00:00 +0100 2829025 http://www.medworm.com/index.php?rid=2829024&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19777169%26dopt%3DAbstract This study investigates mercury, lead, copper, and zinc concentrations in six most frequently consumed fish species (120 samples), sediments (20 samples) taken from Karaduvar Fishing Area where fish species live, and Mersin Port as a contrary region, and human scalp hair for people regularly consuming these fish species (50 samples) and non-fish-eaters (15 samples) in Mersin, Turkey. On taking living environment into account, the fish groups include pelagic species of Liza saliens, Liza aurata, and demersal species of Merluccius merluccius, Mullus barbatus, Upeneus moluccensis, and Solea solea. Total Hg (THg) was found to accumulate in muscle tissues at the lowest concentration (0.01 microg/g) in L. saliens and at the highest (2.66 microg/g) in S. solea. Pb was only detected at high concen... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2829024 Wed, 23 Sep 2009 23:00:00 +0100 2829024 http://www.medworm.com/index.php?rid=2829029&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19774347%26dopt%3DAbstract The objective of this study is to estimate the prevalence of hypocalcemia and its correlation with dietary intake of calcium (DICa) and urinary calcium excretion (UCaE) in pregnant women. Healthy pregnant women (n = 543) were enrolled consecutively. DICa was calculated form dietary history. Serum calcium (SCa) and 24-h UCaE was measured. Student t test and Chi-square tests were used to compare the continuous and categorical data in women with and without hypocalcemia (SCa </= 8.7 mg/dL). Linear regression was applied for determining the independent variables for hypocalcemia. The age and gestation (mean +/- SD) were 21.9 +/- 2.5 years and 18.0 +/- 3.5 weeks, respectively. The body mass index (BMI; mean +/- SD) was 23.3 +/- 3.9 kg/m(2). Seventy-one percent women had an education of less ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2829029 Tue, 22 Sep 2009 23:00:00 +0100 2829029 http://www.medworm.com/index.php?rid=2829028&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19774348%26dopt%3DAbstract This study was carried out on three groups, namely the first (control), the second (experimental colitis group, 2 ml 5% acetic acid), and the third groups (2 ml 5% acetic acid, vitamin E (100 mg/kg body weight (bw)) plus Se (0.2 mg/kg bw)). The activities of catalase (CAT), prolidase (PRS), myeloperoxidase (MPO), total antioxidant capacity (TAC), total oxidant status (TOS), oxidative stress index (OSI), total thiol (T-SH) were determined in plasma and colon samples. Macroscopic and microscopic damages in colon were increased by AA treatment (p < 0.01 and p < 0.01, respectively), whereas they were decreased by selenium and vitamin E treatment (p < 0.05 and p < 0.01, respectively). The activities of CAT and PRS in the plasma and colon were significantly affected (p < 0.05 and ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2829028 Tue, 22 Sep 2009 23:00:00 +0100 2829028 http://www.medworm.com/index.php?rid=2829027&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19774349%26dopt%3DAbstract This study determined and compared the concentrations of zinc and copper in preterm milk of mothers receiving and not receiving zinc supplementation diets. The effects of maternal supplementation on the blood levels and anthropometric parameters were evaluated. Thirty-eight mothers and their preterm infants were enrolled in the study. Eighteen mothers were given a daily supplementation of 50 mg zinc, whereas the other 20 were not. Zinc and copper levels in milk were determined at 15-day intervals, as were blood zinc levels along with anthropometric parameters. Zinc and copper contents were determined by atomic absorption spectrophotometry. No significant differences were found between groups either for zinc values in maternal milk and infant blood or for anthropometric measurements. A pron... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2829027 Tue, 22 Sep 2009 23:00:00 +0100 2829027 http://www.medworm.com/index.php?rid=2810143&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19763407%26dopt%3DAbstract In conclusion, serum Mg level is diminished in elderly subjects with MetS, and hyperglycemia may play dominant role in this decrease; however, the results do not clarify whether the low serum Mg level is a consequence of hyperglycemia or is a risk factor contributing to its development. PMID: 19763407 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2810143 Thu, 17 Sep 2009 23:00:00 +0100 2810143 http://www.medworm.com/index.php?rid=2810142&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19763408%26dopt%3DAbstract In conclusion, selenium and vitamin E supplementations and housing by concrete with colemanite was found to offer protection against gamma-irradiation-induced liver damage and oxidative stress in rats, probably by exerting a protective effect against liver necrosis via its free radical scavenging and membrane stabilizing. Protective effects of colemanite in the liver seem to be more important than in hematite. PMID: 19763408 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2810142 Thu, 17 Sep 2009 23:00:00 +0100 2810142 http://www.medworm.com/index.php?rid=2810144&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19760352%26dopt%3DAbstract Authors: Hu YJ, Ou-Yang Y, Bai AM, Zhao RM, Liu Y Heteropolyoxometalate complexes have been widely applied in many fields. In this paper, the interaction between a series of novel rare earth molybdotungstosilicate heteropolyoxometalates, K(10)H(3)[Ln(SiMo(6)W(5)O(39))(2)].xH(2)O (abbr. LnW(5), Ln = Pr (x = 30), Gd (x = 29), Dy (x = 28), and Yb (x = 31)), and bovine serum albumin (BSA) was investigated by spectroscopic approach under the physiological conditions. In the mechanism discussion, it was proved that the fluorescence quenching of BSA by LnW(5) is a result of the formation of LnW(5)-BSA complex. Fluorescence quenching constants were determined using the Stern-Volmer equation to provide a measure of the binding affinity between LnW(5) and BSA. The binding affinity ranked in the ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2810144 Wed, 16 Sep 2009 23:00:00 +0100 2810144 http://www.medworm.com/index.php?rid=2804756&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756399%26dopt%3DAbstract Authors: Yao X, Chu J, Ba C The paper reports the effects of selenium (Se) supply on growth and antioxidant traits of wheat (Triticum aestivum L. cv Han NO.7086) seedlings exposed to enhanced ultraviolet-B (UV-B) stress. Antioxidant responses of seedlings were different depending on the Se concentration. Compared with the control, the lower amount used (0.5 mg Se kg(-1) soil) had no significant effect on biomass accumulation. The treatments with 1.0, 2.0, and 3.0 mg Se kg(-1) promoted biomass accumulation of wheat seedlings, and the increased amount in biomass was the most at 1.0 mg Se kg(-1) treatment. Se treatments with 1.0, 2.0, and 3.0 mg kg(-1) also significantly increased activities of peroxidase (POD) and superoxide dismutase (SOD) and reduced the rate of superoxide radical (O (... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804756 Mon, 14 Sep 2009 23:00:00 +0100 2804756 http://www.medworm.com/index.php?rid=2804755&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756400%26dopt%3DAbstract Authors: Karatas F, Coteli E, Aydin S, Servi S, Kara H The influence of injection periods of 3-(1H-pyrrol-2-yl)-1H-indazole regarding vitamins A, E, C, selenium (Se), malondialdehyde (MDA) levels, and glutathione peroxidase (GSH-Px) activity in rats has been investigated. The substance was given by subcutaneous injection at 20 mg/kg every other day for a total of 15 injections. At the end of the treatment, Se levels in serum were determined by fluorimetry, and those of vitamins A, E, C, and malondialdehyde in serum, liver, and kidney were determined by high-performance liquid chromatography. GSH-Px activities in erythrocytes were determined spectrophotometrically. Vitamins A, E, C, and Se levels were generally lower than in the controls, while GSH-Px activity at the third injection per... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804755 Mon, 14 Sep 2009 23:00:00 +0100 2804755 http://www.medworm.com/index.php?rid=2804754&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756401%26dopt%3DAbstract Authors: Mohri M, Poorsina S, Sedaghat R The present study was designed to evaluate the effects of parenteral iron on red blood cell parameters, performance, and health in dairy Holstein calves. Twenty neonatal calves were equally divided at random into two groups, one of which served as controls. Care was taken to ensure homogeneity of sex, age, and general health status of the animals. The controls received a normal diet and water ad libitum, while the study animals were injected with 1 g iron as Fe-dextran 2 days after birth. A daily record was kept of the calves' weight and growth parameters. At periods of 24-48 h after birth and at 14, 28, and 42 days of age, jugular blood was drawn from all the experimental and control animals to measure the packed cell volume, red blood count, h... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804754 Mon, 14 Sep 2009 23:00:00 +0100 2804754 http://www.medworm.com/index.php?rid=2804753&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756402%26dopt%3DAbstract Authors: Haro Durand LA, Mesones RV, Nielsen FH, Gorustovich AA Few reports are available in the literature on enamel formation under nutritional deficiencies. Thus, we performed a study to determine the effects of boron (B) deficiency on the maturing dental enamel, employing the rat continuously erupting incisor as the experimental model. Male Wistar rats, 21 days old, were used throughout. They were divided into two groups, each containing ten animals: +B (adequate; 3-mg B/kg diet) and -B (boron deficient; 0.07-mg B/kg diet). The animals were maintained on their respective diets for 14 days and then euthanized. The mandibles were resected, fixed, and processed for embedding in paraffin and/or methyl methacrylate. Oriented histological sections of the continuously erupting incisor wer... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804753 Mon, 14 Sep 2009 23:00:00 +0100 2804753 http://www.medworm.com/index.php?rid=2804752&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756403%26dopt%3DAbstract Authors: Bae YJ, Kim MH, Choi MK Magnesium, an element involved in a variety of biochemical and physiological processes in the human body, is closely linked to maintaining health and preventing disease. Even so, studies on the status of magnesium intake have never been conducted sufficiently since only recently a dietary reference intake value was proposed, and data on magnesium contents in food items have always been insufficient. Therefore, in this study, we selected 366 food items commonly consumed by Korean people and then analyzed their magnesium content with inductively coupled plasma atomic emission spectroscopy. With these results, we evaluated daily magnesium intake in 239 healthy adult males and females. Using these 366 values based on magnesium content measurements, we evalu... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804752 Mon, 14 Sep 2009 23:00:00 +0100 2804752 http://www.medworm.com/index.php?rid=2804751&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756404%26dopt%3DAbstract Authors: Mahdavi R, Nikniaz L, Gayemmagami SJ The aims of this study were to determine the effect of breast milk zinc, copper, and iron concentrations on infants' growth and their possible correlations with maternal dietary intake. Milk samples and information on food intake were collected from 182 lactating women. Concentrations of zinc, copper, and iron in milk were analyzed using atomic absorption spectrophotometry. The infant's weight for age Z-score (WAZ) and height for age Z-score (HAZ) were calculated. The mean milk zinc, copper, and iron concentrations were 1.85 +/- 0.5, 0.53 +/- 0.3, and 0.85 +/- 0.2 mg/l, respectively. Only zinc mean level was lower than the recommended range. Association between zinc, copper, and iron concentrations of milk and WAZ or HAZ of infants were not... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804751 Mon, 14 Sep 2009 23:00:00 +0100 2804751 http://www.medworm.com/index.php?rid=2804750&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756405%26dopt%3DAbstract This study describes the development by response surface methodology (RSM) of a procedure for copper determination by inductively coupled plasma optical emission spectrometry (ICP-OES) in water and biological samples after extraction by magnetic nanoparticles. Four variables such as, pH of solution, amount of extractant, amount of nanoparticles, and time were regarded as factors in the optimization study. Results of the two-level full factorial design (2(4)) based on an analysis of variance demonstrated that only the pH, amount of extractant (E), and amount of nanoparticles (N) were statistically significant. Optimal conditions for the extraction of copper samples were obtained by using Box-Behnken design. Optimum conditions were 5.1, 7.2 mg, and 9.6 mg, for pH of solution, amount of nanop... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804750 Mon, 14 Sep 2009 23:00:00 +0100 2804750 http://www.medworm.com/index.php?rid=2804749&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19756406%26dopt%3DAbstract Authors: Teijón C, Blanco MD, Romero CS, Beneit JV, Villarino AL, Guerrero S, Olmo R A number of studies have reported that heavy metals are not only toxic for the organism but they may modulate immune responses. In the current study, the effect of 4-week administration of 200 ppm of PbAc(2), using different routes of administration (orally and intraperitoneal injection), on lymphatic organs was evaluated. In the thymus, the number of lymphocyte cells and the cellularity diminished significantly for both routes of treatment. Regarding the submaxillary lymph nodes, no significant variations took place. Cell-mediated immune response is commonly evaluated by cell proliferation assays. Mitogens are known to induce a vigorous proliferative response in lymphoid cells from mammals. An in... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2804749 Mon, 14 Sep 2009 23:00:00 +0100 2804749 http://www.medworm.com/index.php?rid=2770444&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19730803%26dopt%3DAbstract Calculation of the Ecological Risk Index in the José Antonio Alzate Dam, State of Mexico, Mexico. Biol Trace Elem Res. 2009 Sep 4; Authors: López-Galván E, Barceló-Quintal I, Solís-Correa HE, Bussy AL, Avila-Pérez P, Martínez Delgadillo S Due to the problem of contamination in the Jose Antonio Alzate dam, located in the State of Mexico, Mexico, the partition coefficient, the contamination degree, and the ecological risk index of nine metals were calculated in order to establish the water quality in different areas of the Alzate dam. The sampling sites were selected according to the river flow into the dam, via three sampling programs, the physical-chemical parameters were measured in situ, and the samples were collected to measure metals in th... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2770444 Thu, 03 Sep 2009 23:00:00 +0100 2770444 http://www.medworm.com/index.php?rid=2766830&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19727569%26dopt%3DAbstract This study assessed the effect of dissolved organic matter on the copper (Cu) bioavailability to mammalian cells, porcine oviductal epithelial cells (POEC), in order to imply its effect onto humans. Cu toxicity was investigated in the presence of with and without fulvic acid (FA). Dissociation and exchange rate constants were calculated by using competing ligand Chelex-100, and optical parameters were employed to help explain the complexation of their aromatic and aliphatic structures. Their morphological change was observed using transmission electron microscope (TEM), and Cu species were calculated using MINTEQA2 program. The results showed that the dissociation rate constant of Cu(2+)-FA was equal to 9.08 x 10(-4) s(-1), which was slower than the exchange rate at 1.95 x 10(-3) s(-1). Al... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2766830 Tue, 01 Sep 2009 23:00:00 +0100 2766830 http://www.medworm.com/index.php?rid=2766829&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19727570%26dopt%3DAbstract This study evaluated the plasma levels of trace elements in children with chronic hepatitis B virus (HBV) infection and assessed whether they can be a factor that affects the response to interferon alpha (IFN-alpha) treatment. The study included 35 cases (ten girls, 25 boys) aged 3-13 years with chronic HBV infection and the control group. Plasma levels of copper (Cu), manganese (Mn), molybdenum (Mo), selenium (Se), and zinc (Zn) were measured before IFN-alpha treatment and biochemical, virological, and histopathologic response to treatment were assessed. Children were followed for at least 15 months. Although plasma Cu levels showed no difference between the groups, Mn, Mo, Se, and Zn levels were significantly lower in the study group before treatment. Fourteen cases (40%) showed biochemi... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2766829 Tue, 01 Sep 2009 23:00:00 +0100 2766829 http://www.medworm.com/index.php?rid=2766828&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19727571%26dopt%3DAbstract Authors: Giray B, Cağlayan A, Erkekoğlu P, Hıncal F Considering the potential adverse effects of selenium and iodine deficiencies, and taking into account the widespread but often careless use of pyrethroid insecticides and their possible endocrine-disrupting effects, this study was undertaken to investigate the effects of fenvalerate on thyroid hormone parameters in both healthy and selenium- and/or iodine-deficient rats. Fenvalerate exposure had no effect on the TT4 levels of healthy controls but caused significant increases both in iodine deficiency (ID) and selenium plus iodine deficiency (ISeD), and a significant decrease in selenium deficiency (SeD). Dramatic increases in TT3 of all groups were observed by fenvalerate. Moreover, it caused insignificant decrease ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2766828 Tue, 01 Sep 2009 23:00:00 +0100 2766828 http://www.medworm.com/index.php?rid=2766827&cid=s_37599_62_f&fid=37599&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fentrez%2Fquery.fcgi%3Ftmpl%3DNoSidebarfile%26db%3DPubMed%26cmd%3DRetrieve%26list_uids%3D19727572%26dopt%3DAbstract Authors: Sfaxi-Bousbih A, Chaoui A, El Ferjani E The influence of copper excess on germination rate, growth, minerals, carbohydrates, and amino acids supply in embryonic axis of bean seed was investigated. Compared to the control, Cu treatment caused a reduction in germination percent, embryo length, and accumulation of Ca, Fe, K, Mn, Zn, total soluble sugars, glucose, fructose, sucrose, and amino acids. Moreover, the nutrient concentrations, as well as the electrical conductivity were determined in the germination medium to quantify the extent of solute leakage. Such nutrients were lost in the imbibition medium at the expense of suitable mobilization to the growing embryonic axis. This was associated with an enhancement in accumulation of malondialdehyde, major product of lipoperoxida... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=2766827 Tue, 01 Sep 2009 23:00:00 +0100 2766827