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. Thu, 09 Feb 2012 14:31:56 +0100 http://www.medworm.com/index.php?rid=5636796&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%3D22281815%26dopt%3DAbstract Authors: Liu S, Lu L, Li S, Xie J, Zhang L, Wang R, Luo X Abstract An experiment was conducted to investigate the bioavailability of organic copper (Cu) proteinate relative to inorganic Cu sulfate for broiler chicks fed a conventional corn-soybean meal basal diet. A total of 320 day-old Arbor Acres commercial male chicks were assigned to one of five treatments in a completely randomized design involving a 2 × 2 factorial arrangement with two levels of added Cu (125 or 250 mg Cu/kg) and two Cu sources (Cu proteinate and Cu sulfate) plus a control with no added Cu for an experimental phase of 42 days. Plasma and liver tissue samples were collected at both 21 and 42 days of age, and bile samples were also obtained at 42 days of age for Cu analyses. The Cu concentrations in l... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5636796 Fri, 27 Jan 2012 05:00:00 +0100 5636796 http://www.medworm.com/index.php?rid=5636795&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%3D22281816%26dopt%3DAbstract Authors: Gürbay A Abstract The aim of this study was to investigate the possible time- and dose-dependent cytotoxic effects of cobalt chloride on Vero cells. The cultured cells were incubated with different concentrations of cobalt chloride ranging from 0.5 to 1,000 μM, and cytotoxicity was determined by 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide (MTT) and resazurin assays. Possible protective effects of vitamin E, coenzyme Q(10), and zinc chloride were also tested in this system. A gradual decrease in cell proliferation was observed at concentrations ~≥200 μM in incubation periods of 24, 48, 72, and 96 h with MTT assay. Exposure of cells to 500 and 1,000 μM cobalt chloride caused significant decrease in cell survival. A biphasic survival profile of ce... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5636795 Fri, 27 Jan 2012 05:00:00 +0100 5636795 http://www.medworm.com/index.php?rid=5636798&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%3D22278096%26dopt%3DAbstract Authors: Ibrahim M, Hassan W, Meinerz DF, de Oliveira Leite G, Nogueira CW, Rocha JB Abstract It is widely accepted that oxidative stress plays a central role in alcohol-induced pathogenesis. The protective effect of binaphthyl diselenide (NapSe)2 was investigated in ethanol (Etoh)-induced brain injury. Thirty male adult Wistar rats were divided randomly into five groups of six animals each and treated as follows: (1) The control group received the vehicle (soy bean oil, 1 mL/kg, p.o.). (2) Ethanol group of animals was administered with ethanol (70% v/v, 2 mL/kg, p.o.). (3) (NapSe)2 1 mg/kg, 1 mL/kg plus ethanol 70% (v/v, 2 mL/kg, p.o. (5) (NapSe)2 10 mg/kg, 1 mL/kg) plus ethanol 70% (v/v, 2 mL/kg, p.o). After acute treatment, all rats were sacrificed by decapitation. Evide... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5636798 Thu, 26 Jan 2012 05:00:00 +0100 5636798 http://www.medworm.com/index.php?rid=5636797&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%3D22278097%26dopt%3DAbstract The objective of this study was to develop a procedure for estimating the standardized mineral (calcium, Ca; phosphorus, P; copper, Cu; manganese, Mn; zinc, Zn) availabilities (SMA) in soybean meal for broilers. In experiment 1, twelve 24-day-old male chicks were used to determine the length of the pre-experimental fasting period needed to empty the total tract of feed residues. Feed was removed and excreta samples were collected for 12, 24, 36 or 48 h after feed withdrawal, respectively. The result indicated that birds were fasted for at least 24 h after feed withdrawal in order to ensure that no previous feed residues remained in the digestive tract of chicks. In a subsequent experiment, forty-eight 24-day-old male chicks were used to determine SMA in soybean meal. Chicks were fasted f... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5636797 Thu, 26 Jan 2012 05:00:00 +0100 5636797 http://www.medworm.com/index.php?rid=5636800&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%3D22274754%26dopt%3DAbstract Authors: Li Y, Zheng Y, Qian J, Chen X, Shen Z, Tao L, Li H, Qin H, Li M, Shen H Abstract Psychological stress (PS) could cause decreased iron absorption and iron redistribution in body resulting in low iron concentration in the bone marrow and inhibition of erythropoiesis. In the present study, we investigated the effect of zinc supplementation on the iron metabolism, erythropoiesis, and oxidative stress status in PS-induced rats. Thirty-two rats were divided into two groups randomly: control group and zinc supplementation group. Each group was subdivided into two subgroups: control group and PS group. Rats received zinc supplementation before PS exposure established by a communication box. We investigated the serum corticosterone (CORT) level; iron apparent absorption; iron conte... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5636800 Wed, 25 Jan 2012 05:00:00 +0100 5636800 http://www.medworm.com/index.php?rid=5636799&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%3D22274755%26dopt%3DAbstract Authors: Zhang L, Lv J, Sun S Abstract The concentrations of trace elements are closely related to tumor genesis, progression, and therapy. In order to establish the extent to which trace elements apply to lung cancer, 15 trace elements were determined in 60 lung tissue samples from residents of Xuanwei and Fuyuan, two counties with extremely high lung cancer incidences in Yunnan province, China. The results indicated that the levels of V, Fe, Zn, Cd, Ni, Cu, Se, and Pb in the lung cancer tissues were significantly different from those in benign tissues. Among the eight elements, the levels of V, Fe, Zn, and Cd in the lung cancer tissues were lower than those in the benign tissues, while those of Ni, Cu, Se, and Pb were higher. Multiple conditional logistic regression showed that a... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5636799 Wed, 25 Jan 2012 05:00:00 +0100 5636799 http://www.medworm.com/index.php?rid=5636801&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%3D22270623%26dopt%3DAbstract In conclusion, dietary vanadium in excess of 30 mg/kg reduced the numbers of the IgA(+) cells and changed the contents of the abovementioned cytokines in the cecal tonsil, which may finally impact the function of local mucosal humoral immunity in broilers. PMID: 22270623 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5636801 Fri, 20 Jan 2012 05:00:00 +0100 5636801 http://www.medworm.com/index.php?rid=5619062&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%3D22249889%26dopt%3DAbstract Authors: Piechal A, Blecharz-Klin K, Pyrzanowska J, Widy-Tyszkiewicz E Abstract A large body of evidence supports an opinion that adequate dietary zinc is essential for prenatal and postnatal brain development. Behavioural effects of maternal supplementation with ZnSO(4) were analysed in rat pups with the Morris water task performance, a hole board and a T-maze. Wistar females during pregnancy and lactation received a drinking water solution of ZnSO(4) at doses of 16 mg/kg (group Zn16) or 32 mg/kg (group Zn32). Behavioural tests were conducted on the 4-week-old male rat pups. Zinc concentration in the serum, hippocampus and prefrontal cortex of offsprings was determined by means of atomic absorption techniques. The Newman-Keuls multiple comparison test revealed an increase of cli... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5619062 Tue, 17 Jan 2012 05:00:00 +0100 5619062 http://www.medworm.com/index.php?rid=5619065&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%3D22246790%26dopt%3DAbstract In conclusion, treatment with N-acetylcysteine modulated the antioxidant redox system and reduced brain oxidative stress induced by copper. PMID: 22246790 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5619065 Fri, 13 Jan 2012 05:00:00 +0100 5619065 http://www.medworm.com/index.php?rid=5619064&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%3D22246791%26dopt%3DAbstract Authors: León IE, Etcheverry SB, Parajón-Costa BS, Baran EJ Abstract The oxovanadium(IV) complex of oxodiacetic acid (H(2)ODA) and o-phenanthroline of stoichiometry [VO(ODA)(ophen)][Symbol: see text]1.5H(2)O, which presents the interesting tridentate OOO coordination, was thoroughly characterized by infrared, Raman, and electronic spectroscopies. The biological activity of the complex on the cell proliferation was tested on osteoblast-like cells (MC3T3E1 osteoblastic mouse calvaria-derived cells and UMR106 rat osteosarcoma-derived cells) in culture. The complex caused inhibition of cellular proliferation in both osteoblast cell lines in culture, but the cytotoxicity was stronger in the normal (MC3T3E1) than in the tumoral (UMR106) osteoblasts. PMID: 22246791 [PubMed - as supp... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5619064 Fri, 13 Jan 2012 05:00:00 +0100 5619064 http://www.medworm.com/index.php?rid=5619063&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%3D22246792%26dopt%3DAbstract Authors: Guo B, Xu LL, Guan ZJ, Wei YH Abstract In present study, the effect of lanthanum (La) on the rooting of regenerated shoots of Saussurea involucrata Kar. et Kir was analyzed. Rooting occurred from regenerated shoots inoculated on a medium supplemented with La, the plant rooting hormone indole-3-acetic acid (IAA), or both La and IAA together. The highest rooting efficiency (96%), root number/shoot (8.5), and root length (63 mm) were recorded in shoots cultured on medium containing 2.5 μM IAA combined with 100 μM La(3+). In order to elucidate the mechanism of rooting enhancement by La, we examined dynamic changes in antioxidant enzyme activities in plant tissue over time in culture. We found that the activities of peroxidase (POX) and superoxide dismutase (SOD) were sign... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5619063 Fri, 13 Jan 2012 05:00:00 +0100 5619063 http://www.medworm.com/index.php?rid=5595343&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%3D22240877%26dopt%3DAbstract Authors: Naseri Z, Mohri M, Aslani MR, Mohammadi G, Alavi Tabatabaee AA PMID: 22240877 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595343 Fri, 13 Jan 2012 05:00:00 +0100 5595343 http://www.medworm.com/index.php?rid=5595346&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%3D22237420%26dopt%3DAbstract This study investigated the mechanism of ADR nephropathy and the protective effect of selenium on ADR-induced kidney damage by analyzing of the relationship between selenium and mitochondria. Rats were divided into four groups. The first group was injected with saline i.p. for 21 days, the second group received the 4 mg/kg i.p. ADR every alternate day for 8 days, the third group received the 50 μg/kg i.p. Se for 21 days, and the fourth group received the Se. ADR co-administration i.p. blood pressures were assessed, the mitochondrial membrane potential (MMP) was assessed, and the adenosine triphosphate (ATP) levels were determined. The total antioxidant (TAS) and oxidant status (TOS) in cytosol, the mitochondria of kidney cells, and plasma were measured. Mitochondrial TAS decreased an... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595346 Thu, 12 Jan 2012 05:00:00 +0100 5595346 http://www.medworm.com/index.php?rid=5595345&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%3D22237421%26dopt%3DAbstract Authors: Rama Rao SV, Raju MV, Panda AK, Poonam NS, Krishna Murthy O, Shyam Sunder G Abstract An experiment was conducted to study effect of supplementing graded concentrations (0, 100, 200, 300, or 400 μg/kg diet) of organic chromium (Cr) on performance, carcass traits, oxidative stress, and immune responses in commercial broiler chickens reared in open-sided poultry house under tropical climatic conditions. Each diet was fed ad libitum to eight replicates consisting of six birds in each pen from 1 to 42 days of age. Body mass gain and feed efficiency at 21 and 42 days of age and relative mass of liver, abdominal fat, and ready to cook yields at 42 days of age were not affected (P > 0.05) by supplementing organic Cr in broiler diet. Body mass loss during pre-slaughter ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595345 Thu, 12 Jan 2012 05:00:00 +0100 5595345 http://www.medworm.com/index.php?rid=5595344&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%3D22237422%26dopt%3DAbstract Authors: Dolińska B, Zieliński M, Dobrzański Z, Chojnacka K, Opaliński S, Ryszka F Abstract The influence of incubation conditions, enzyme type, hydrolysis time, and potassium iodide concentration on hydrolysis and iodine enrichment were studied in supernatant and pellets of Saccharomyces cervisiae hydrolysates. The type of enzyme used and incubation time significantly influence hydrolysis efficiency and protein concentration in supernatant and pellet. The highest protein hydrolysis efficiency was obtained by 24-h incubation with papain. Significantly lower values were observed for pepsin and autolysis. The potassium iodide concentration influences the iodine content of supernatant and pellet, but not hydrolysis. Iodide enrichment of supernatant and pellet depends on the concen... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595344 Thu, 12 Jan 2012 05:00:00 +0100 5595344 http://www.medworm.com/index.php?rid=5595349&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%3D22234823%26dopt%3DAbstract Authors: Parajuli RP, Fujiwara T, Umezaki M, Furusawa H, Ser PH, Watanabe C Abstract The purpose of this study is to evaluate the cord blood level of toxic and trace elements and to identify their determinants in Terai, Nepal. One hundred pregnant women were recruited from one hospital in Chitwan, Nepal in 2008. The cord blood levels of toxic [lead (Pb), arsenic (As), and cadmium (Cd)], essential trace elements [zinc (Zn), selenium (Se), and copper (Cu)], demographic, socioeconomic, and behavioral variables were measured. The mean values of Pb, As, Cd, Zn, Se, and Cu in cord blood level were found as 31.7, 1.46, 0.39, 2,286, 175, and 667 μg/L, respectively. In the multivariate regression model, cord blood As levels from less educated mothers were higher than those from educated m... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595349 Wed, 11 Jan 2012 05:00:00 +0100 5595349 http://www.medworm.com/index.php?rid=5595348&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%3D22234824%26dopt%3DAbstract Authors: Lanocha N, Kalisinska E, Kosik-Bogacka DI, Budis H Abstract The aim of this paper was to determine the level of five elements, two essential for life [zinc (Zn) and copper (Cu)] and three distinctly toxic [lead (Pb), cadmium (Cd), and mercury (Hg)], in four types of biological material in bones of the dog Canis lupus familiaris. The experiment was carried out on bones from the hip joints of dogs. The samples of cartilage, compact bone, spongy bone, and cartilage with adjacent compact bone came from 26 domestic dogs from northwestern Poland. Concentrations of Cu, Zn, Pb, and Cd were determined by ICP-AES (atomic absorption spectrophotometry) in inductively coupled argon plasma, using a Perkin-Elmer Optima 2000 DV. Determination of Hg concentration was performed by atomic ab... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595348 Wed, 11 Jan 2012 05:00:00 +0100 5595348 http://www.medworm.com/index.php?rid=5595347&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%3D22234825%26dopt%3DAbstract Authors: Liu H, Zhang J, Li T, Shi Y, Wang Y Abstract Ten species of wild edible mushrooms (Boletus griseus, Boletus speciosus, Lactarius hygrophoroides, Leucopaxillus giganteus, Macrocybe gigantea, Melanoleuca arcuata, Morchella deliciosa, Mycena haematopus, Pulveroboletus ravenelii, and Tricholoma matsutake) collected from Yunnan province of China, were analyzed for ten mineral elements (calcium, chromium, cobalt, copper, iron, magnesium, manganese, potassium, sodium, and zinc) contents using ICP-AES. The minimum and maximum element contents of mushrooms were determined as milligrams per kilograms dry weight for Ca (38-470), Cr (0.45-6.3), Co (0.29-2.3), Cu (13-58), Fe (22-510), Mg (84-550), Mn (1.4-70), K (1,300-4,600), Na (190-670), and Zn (16-160). The mushrooms species with t... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595347 Wed, 11 Jan 2012 05:00:00 +0100 5595347 http://www.medworm.com/index.php?rid=5595352&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%3D22231435%26dopt%3DAbstract Authors: Ghaffari T, Nouri M, Saei AA, Rashidi MR Abstract Effects of vitamin E and selenium supplementation on aldehyde oxidase (AO) and xanthine oxidase (XO) activities and antioxidant status in liver, kidney, and heart of streptozotocin (STZ)-induced diabetic rats were examined. AO and XO activities increased significantly after induction of diabetes in rats. Following oral vitamin E (300 mg/kg) and sodium selenite (0.5 mg/kg) intake once a day for 4 weeks, XO activity decreased significantly. AO activity decreased significantly in liver, but remained unchanged in kidney and heart of vitamin E- and selenium-treated rats compared to the diabetic rats. Total antioxidants status, paraoxonase-1 (PON1) and erythrocyte superoxide dismutase activities significantly decreased in the ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595352 Tue, 10 Jan 2012 05:00:00 +0100 5595352 http://www.medworm.com/index.php?rid=5595351&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%3D22231436%26dopt%3DAbstract Authors: Zaichick V, Nosenko S, Moskvina I Abstract The effect of age on 12 chemical element contents in intact prostate of 64 apparently healthy, 13-60-year-old men (mean age 36.5 years) was investigated by inductively coupled plasma atomic emission spectrometry. Mean values (M ± SΕΜ) for mass fraction (milligrams/kilogram, on dry weight basis) of Ba, Ca, Cu, Fe, K, Mg, Na, P, S, Sr, and Zn were: Ba 1.18 ± 0.12, Ca 2,178 ± 160, Cu 10.7 ± 0.9, Fe 122 ± 5, K 12,530 ± 360, Mg 1,100 ± 70, Na 10,470 ± 320, P 7,580 ± 300, S 8,720 ± 180, Sr 1.85 ± 0.28, and Zn 782 ± 97, respectively. The upper limit of mean content of V was ≤0.22 mg/kg. A tendency of age-related increase in Ca, Fe, Na, and Zn mass fraction as well an incre... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595351 Tue, 10 Jan 2012 05:00:00 +0100 5595351 http://www.medworm.com/index.php?rid=5595350&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%3D22231437%26dopt%3DAbstract Authors: Dolińska B, Lopata K, Mikulska A, Leszczyńska L, Ryszka F Abstract The effect of egg yolk phosvitin on the permeation and absorption of calcium was investigated in vitro in relation to calcium gluconate concentration. Obtained results indicate that phosvitin significantly reduces the intestinal calcium absorption from 1 and 10 mM of calcium gluconate solution. It is associated with the formation of the complex of Ca (II) ions with phosvitin. The process of calcium permeation increases under phosvitin influence when calcium gluconate concentrations rise up to 10 mM. At a higher concentration of calcium gluconate (20 mM), no effect of phosvitin was seen on permeation of calcium ions. PMID: 22231437 [PubMed - as supplied by publisher] (Source: Biological Trace Elemen... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5595350 Tue, 10 Jan 2012 05:00:00 +0100 5595350 http://www.medworm.com/index.php?rid=5576604&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%3D22222482%26dopt%3DAbstract Authors: Han H, Xin P, Zhao L, Xu J, Xia Y, Yang X, Sun X, Hao L Abstract The aim of this study was to illustrate the combined effect of excess iodine and high-fat diet on lipid metabolism and its potential molecular mechanism. Sixty Balb/c mice were randomly allocated to three control groups or three excess iodine groups and fed with a high-fat diet in the absence or presence of 1,200 μg/L iodine for 1, 3, or 6 months, respectively. Serum lipid parameters and serum thyroid hormones were measured. Expressions of scavenger receptor class B type-I (SR-BI) and low density lipoproteins receptor (LDLr) mRNA and protein in liver were detected. Thyroid histology and liver type 1 iodothyronine deiodinase activity were analyzed. At the end of 3 and 6 months, compared with control, serum... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5576604 Fri, 06 Jan 2012 05:00:00 +0100 5576604 http://www.medworm.com/index.php?rid=5576603&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%3D22222483%26dopt%3DAbstract Authors: Aslam MN, Bergin I, Naik M, Hampton A, Allen R, Kunkel SL, Rush H, Varani J Abstract C57BL/6 mice were maintained for up to 18 months on high-fat and low-fat diets with or without a multi-mineral supplement derived from the skeletal remains of the red marine algae Lithothamnion calcareum. Numerous grossly observable liver masses were visible in animals on the "western-style" high-fat diet sacrificed at 12 and 18 months. The majority of the masses were in male mice (20 out of 100 males versus 3 out of 100 females; p = 0.0002). There were more liver masses in animals on the high-fat diet than on the low-fat diet (15 out of 50 on high-fat versus 5 out of 50 on low-fat; p = 0.0254). The multi-mineral supplement reduced the number of liver masses in mice on both diets... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5576603 Fri, 06 Jan 2012 05:00:00 +0100 5576603 http://www.medworm.com/index.php?rid=5576605&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%3D22219025%26dopt%3DAbstract In conclusion, there is no correlation between dental fluorosis and PTH Bst BI polymorphism. Serum OC might be a more sensitive biomarker for detecting early stages of dental fluorosis, and further studies are needed. PMID: 22219025 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5576605 Thu, 05 Jan 2012 05:00:00 +0100 5576605 http://www.medworm.com/index.php?rid=5576606&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%3D22215283%26dopt%3DAbstract Authors: Hunde A, Patterson P, Ricke S, Kim WK Abstract One of the environmental challenges that the poultry industry has been faced with is ammonia emission from manure. One way to reduce nitrogen excretion and emissions is supplementing dietary trace minerals to inhibit the activity of microbial uricase, a key enzyme converting nitrogen compounds in the manure into ammonia. Several dietary minerals are commercially available as economic alternatives for reducing ammonia emissions in poultry. In this review, we discuss different mineral elements including zinc as feed amendment minerals that could be used to reduce ammonia emission. Issues discussed include potential for inhibiting microbial uricase, dietary supplementation levels, growth performance, toxicity, their influence on ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5576606 Wed, 04 Jan 2012 05:00:00 +0100 5576606 http://www.medworm.com/index.php?rid=5557869&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%3D22207218%26dopt%3DAbstract Authors: Ibrahim HA, Zhu Y, Wu C, Lu C, Ezekwe MO, Liao SF, Haung K Abstract A total of 75 male mice were allotted to five groups of 15 each in a completely randomized experimental design to study the effects of probiotics, inorganic selenium, and selenium-enriched probiotics on male fertility in hyperlipidemic status. The mice in group 1 were fed a normal basal diet and served as negative control. The mice in group 2 were fed a high fat diet and served as positive control. The mice in groups 3, 4, and 5 were fed the high fat diet supplemented with probiotics, inorganic selenium, and selenium-enriched probiotics, respectively. The high fat diet was composed of 15% lard, 1% cholesterol, 0.3% cholic acid, and 83.7% basal diet. Over 90% of the selenium in the selenium-enriched probiot... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5557869 Fri, 30 Dec 2011 05:00:00 +0100 5557869 http://www.medworm.com/index.php?rid=5557868&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%3D22207219%26dopt%3DAbstract Effects of Chicken Selenoprotein W on H(2)O (2)-Induced Apoptosis in CHO-K1 Cells. Biol Trace Elem Res. 2011 Dec 30; Authors: Han YH, Zhang ZW, Su J, Zhang B, Li S, Xu SW Abstract Selenoprotein W (SelW) is expressed in various tissues of many animals and acts as an oxidoreductase in mammals. However, little is known about the role of the SelW in birds. To investigate the role of the chicken SelW on H(2)O(2)-induced apoptosis in CHO-K1 cells, overexpression of a chicken SelW cell lines (CHO-K1/SelW) were constructed. Using acridine orange/ethidium bromide (AO/EB) double staining and terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL) assays, as well as WST-1 cell viability assay, we monitored the extent of the H(2)O(2)-induced apoptosis a... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5557868 Fri, 30 Dec 2011 05:00:00 +0100 5557868 http://www.medworm.com/index.php?rid=5557867&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%3D22207220%26dopt%3DAbstract In conclusion, we show that sTfR indices and the ratio of sTfR/ferritin could be useful indicators for monitoring iron deficiency during endurance training. PMID: 22207220 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5557867 Fri, 30 Dec 2011 05:00:00 +0100 5557867 http://www.medworm.com/index.php?rid=5557870&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%3D22205359%26dopt%3DAbstract Authors: She Y, Wang N, Chen C, Zhu Y, Xia S, Hu C, Li Y Abstract The effects of Aluminum (Al) exposure on immune functions of cultured splenic T and B lymphocytes of rats were studied. The lymphocytes were isolated from spleen of healthy male Wistar rats weighing 110-120 g. The cultured cells in RPMI-1640 medium were exposed to 0 (control group), 0.035 (low-dose group), 0.07 (medial-dose group), and 0.14 (high-dose group) mg/mL Al(3+) as aluminum trichloride (AlCl(3)) in an incubator under 5% CO(2) at 37°C for 24 h. The T and B lymphocyte proliferation was measured with a tetrazolium dye colorimetric assay. The levels of interleukin (IL)-2, IL-6, and tumor necrosis factor (TNF)-α were determined by iodine [(125)I] IL-2, IL-6, and TNF-α radioimmunoassay kits, respectively. T... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5557870 Thu, 29 Dec 2011 05:00:00 +0100 5557870 http://www.medworm.com/index.php?rid=5557873&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%3D22201044%26dopt%3DAbstract In this study, we aimed to assess whether free-ranging wild canids are exposed to heavy metals in one of the most developed and populated regions of Brazil. Hair of 26 wild canids (maned wolves Chrysocyon brachyurus, crab-eating foxes Cerdocyon thous, and hoary foxes Lycalopex vetulus) from the Cerrado biome in Southeast Brazil were analyzed by spectrophotometry to detect cadmium, chromium, and lead, and also the essential copper, iron, manganese, and zinc traces. All samples showed traces of copper, iron, manganese, and zinc. Non-essential lead was detected in 57% (2.35 ± 0.99 mg/kg), and chromium in 88% (2.98 ± 1.56 mg/kg) of samples. Cadmium traces (detection limit 0.8 mg/kg) were not found. Crab-eating foxes had more copper, iron, and manganese in hair than maned wolves. C... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5557873 Tue, 27 Dec 2011 05:00:00 +0100 5557873 http://www.medworm.com/index.php?rid=5557872&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%3D22201045%26dopt%3DAbstract Authors: Marettová E, Maretta M, Legáth J, Košutzká E Abstract The retention of cadmium and selenium influence on Cd retention in the muscle, liver and kidneys of hens, chickens and in eggs was studied. Cadmium (Cd) as cadmium chloride (CdCl(2)) and selenium (Se) as sodium selenite (Na(2)SeO(3)) were added to feed at dosages: group 0-control, group 1-20 mg/kg Cd, group 2-30 mg/kg Cd + 4 mg/kg Se. The birds were exposed to Cd for 8 weeks. Cadmium level in hens and cocks was found highest in the kidneys, followed by the liver and muscle. Se supplementation resulted in Cd increase in the muscle tissue and in the reduction of Cd content in the liver and in significant decrease in the kidneys (p < 0.05). A higher Cd level in the yolk and lower in the white was noted i... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5557872 Tue, 27 Dec 2011 05:00:00 +0100 5557872 http://www.medworm.com/index.php?rid=5557871&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%3D22201046%26dopt%3DAbstract Authors: Chen H, Tan C Abstract The present study was designed to evaluate the levels of eight elements including lithium, zinc, chromium, copper, iron, manganese, nickel and vanadium in whole blood of type-2 diabetes patients, to compare them with age-matched healthy controls and to investigate the feasibility of combining them with an ensemble model for diagnosing purpose. A dataset involving 158 samples, among which 105 were taken from healthy adults and the remaining 53 from patients with type-2 diabetes, was collected. All samples were split into the training set and the test set with the equal size. Based on a simple variable selection, two elements, i.e., chromium and iron, are also picked out as the most important elements. Three kinds of algorithms, i.e., fisher linear dis... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5557871 Tue, 27 Dec 2011 05:00:00 +0100 5557871 http://www.medworm.com/index.php?rid=5544591&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%3D22198868%26dopt%3DAbstract Authors: Carrillo-González R, González-Chavez MD PMID: 22198868 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5544591 Sat, 24 Dec 2011 05:00:00 +0100 5544591 http://www.medworm.com/index.php?rid=5544590&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%3D22198869%26dopt%3DAbstract This study was aimed at assessing the circadian rhythm of serum iron levels in Chinese healthy subjects. The project was conducted in 19 healthy, Chinese male subjects following a 4-day diet equilibration. Blood samples were collected on day 5 at 0800, 1000, 1200, 1400, 1600, 1800, 2000, and 2400 hours to determine endogenous serum iron concentrations. Iron concentrations were determined using an inductively coupled plasma mass spectrometry. Iron concentration was decreased from morning to afternoon. The minimum value of iron level was 1,987 μg/L at 2000 hours while the maximum was 2,229 μg/L at 1000 hours, and 2,278 μg/L at 1400 hours, respectively, the amplitude was 291 μg/L. This study indicates that when assessing the bioequivalence of iron formulations, baseline levels of iro... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5544590 Sat, 24 Dec 2011 05:00:00 +0100 5544590 http://www.medworm.com/index.php?rid=5544593&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%3D22190260%26dopt%3DAbstract Authors: González-Pérez JM, González-Reimers E, Delavega-Prieto MJ, Del Carmen Durán-Castellón M, Viña-Rodríguez J, Galindo-Martín L, Alvisa-Negrín J, Santolaria-Fernández F Abstract Both manganese and copper may affect bone synthesis. Bone content of both metals can be altered in alcoholics, although controversy exists regarding this matter. To analyse the relative and combined effects of ethanol and a low protein diet on bone copper and manganese, and their relationships with bone structure and metabolism, including trabecular bone mass (TBM), osteoid area (OA), osteocalcin (OCN), insulin-like growth factor-1 (IGF-1), parathyroid hormone (PTH), urinary hydroxyproline (uHP) and vitamin D. Adult male Sprague-Dawley rats were divided into four groups. The control rats rece... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5544593 Thu, 22 Dec 2011 05:00:00 +0100 5544593 http://www.medworm.com/index.php?rid=5544592&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%3D22190261%26dopt%3DAbstract Authors: Liu Y, Li BH, Sun XM, Lin AH, Wang DB Abstract The interactions between selenium (sodium selenite), anthracycline antibiotics daunorubicin (DNR), and major contractile protein cardiac myosin (CM) were investigated. The results showed that the binding force between selenium and CM was 100 times stronger than that of DNR and CM. There was no marked influence on fluorescence intensity of DNR-CM at selenium concentrations of up to 20 μM. The co-administration of selenium (0.5-10.0 μg Se/ml) together with DNR resulted in a significant reduction in mice cardiotoxicity. However, selenium at the dose of 50.0 or 100.0 μg Se/ml afforded no obvious protection. The data indicate that selenium in the form of sodium selenite at appropriate dosage (<10.0 μg Se/ml) diminish the... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5544592 Thu, 22 Dec 2011 05:00:00 +0100 5544592 http://www.medworm.com/index.php?rid=5544594&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%3D22187326%26dopt%3DAbstract Authors: Yamini Y, Tahmasebi E, Ranjbar L Abstract In the present study, a novel quantitative method, namely magnetic nanoparticle-based solid-phase extraction (MSPE), was applied to extract vitamin B(12) from pharmaceutical formulations. The technique involves the use of Fe(3)O(4) nanoparticles modified by sodium dodecyl sulfate (SDS) as an efficient adsorbent for solid-phase extraction of vitamin B(12). Collection of magnetic nanoparticles (MNPs) from aqueous solution was simply achieved by applying external magnetic field. The analyte was desorbed from MNPs using alkali 1-propanol. The extracted analyte was analyzed by using flow injection inductively coupled plasma-optical emission spectrometry. Factors affecting the extraction efficiency were investigated and optimized. Under ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5544594 Wed, 21 Dec 2011 05:00:00 +0100 5544594 http://www.medworm.com/index.php?rid=5525867&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%3D22173815%26dopt%3DAbstract Lanthanide Salts of Heteropoly Molybdotungstosilicate LnHSiMo(10)W (2)O (40)·xH (2)O (Ln = Pr, Nd, Sm, Gd, Tb, Dy, Yb) Binding to Bovine Serum Albumin: A Fluorescence Quenching Study. Biol Trace Elem Res. 2011 Dec 16; Authors: Bai AM, Ou-Yang Y, Yue HL, Li XL, Hu YJ Abstract In the present work, the interaction between a series of novel lanthanide salts of heteropoly molybdotungstosilicate LnHSiMo(10)W(2)O(40)·xH(2)O (LnW(2); Ln = Pr (x = 23), Nd (x = 24), Sm (x = 26), Gd (x = 20), Tb (x = 23), Dy (x = 21), Yb (x = 25)), and bovine serum albumin (BSA) was investigated by spectroscopic approach at different temperatures under imitated physiological conditions. In the mechanism discussion, it was proved that the fluorescence q... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525867 Fri, 16 Dec 2011 05:00:00 +0100 5525867 http://www.medworm.com/index.php?rid=5525869&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%3D22167309%26dopt%3DAbstract Authors: Salim HM, Lee HR, Jo C, Lee SK, Lee BD Abstract Zinc (Zn) is an essential mineral for animal development and function. A study was carried out to evaluate the effect of sex and dietary organic zinc (OZ) on growth performance, carcass traits, tissue mineral content, and blood parameters of broiler chickens. A total of 240 1-day-old male and 240 female broiler chicks (Cobb × Cobb) were assigned to two dietary levels of OZ (2 × 2 factorial) with six replicates per treatment (20 birds/replicate pen). The OZ supplementation levels were 0 and 25 ppm. Results showed that OZ supplementation did not affect the growth performance of male and female broilers, but the males showed significantly better (P < 0.05) growth performance than females did. Similarly, OZ suppleme... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525869 Wed, 14 Dec 2011 05:00:00 +0100 5525869 http://www.medworm.com/index.php?rid=5525868&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%3D22167310%26dopt%3DAbstract Authors: Li X, Li QG, Zhang H, Hu JL, Yao FH, Yang DJ, Xiao SX, Ye LJ, Huang Y, Guo DC Abstract This paper reports the synthesis of a new bioactive complex, 8-hydroxyquinolinato-bis-(salicylato) yttrium (III) (HSAY), whose composition and structure were characterized by elemental analysis, IR spectra, thermogravimetric analysis, and X-ray diffraction. The power-time curves of the compounds HSAY, C(7)H(6)O(3), C(9)H(7)NO, and YCl(3)·6H(2)O on the growth metabolism of Schizosaccharomyces pombe (S. pombe) were determined at 32.00°C, respectively. The corresponding thermokinetics parameters, which include the microbial growth rate constant (κ), inhibition ratio (I), and half inhibition concentration (IC(50)), were also derived. The results showed that the generation time was 168.2 ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525868 Wed, 14 Dec 2011 05:00:00 +0100 5525868 http://www.medworm.com/index.php?rid=5525882&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%3D22161314%26dopt%3DAbstract In this study, we report the effect of zinc supplementation on the distribution of elements in kidney tissue of diabetic rats subjected to acute swimming exercise. Diabetes was induced by two subcutaneous injections of 40 mg/kg of streptozotocin within a 24-h period. Zinc was given intraperitoneally at a dose of 6 mg/kg per day for a period of 4 weeks. The rats (n = 80) were equally divided into eight study groups: controls, zinc-supplemented, swimming, diabetic, zinc-supplemented diabetic, zinc-supplemented swimming, diabetic swimming, and zinc-supplemented diabetic swimming. The levels of lead, cobalt, molybdenum, chromium, boron, magnesium, iron, copper, calcium, zinc, and selenium were determined in the kidney tissue samples by ICP-AES. Higher molybdenum, calcium, zinc, and sele... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525882 Tue, 13 Dec 2011 05:00:00 +0100 5525882 http://www.medworm.com/index.php?rid=5525874&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%3D22161315%26dopt%3DAbstract In this study, biological pollen characterization of some collected legume species from an aluminum smelter area in Iran (IRALCO) was carried out to determine the actual value of pollen as a bioindicator of the effects of soil and atmospheric pollution. Young buds and flowers of six legumes (Cercis siliquastrum L., Medicago sativa L., Robinia pseudoacacia L., Melilotus officinalis (L.) lam, Trifolium repens L., and Sophora alopecuroides L.) in polluted and control plants were removed and compared. Studies of light and electron microscopic preparation showed some abnormalities during pollen development in affect of fluoride pollution. The viability of pollen grains estimated by staining with acetocarmine shows sharp differences in smearing advanced pollen grains from abnormal ones. Except M... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525874 Tue, 13 Dec 2011 05:00:00 +0100 5525874 http://www.medworm.com/index.php?rid=5525872&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%3D22161316%26dopt%3DAbstract Authors: Zhang J, Yuan T, Wang Y, Zhao Y, Zhang J, Jin H Abstract The concentrations of nine mineral elements were determined by atomic absorption spectroscopy in Gentiana rigescens from three zones (middle, southeast, and northwest zones) of Yunnan province in China. The average concentrations of mineral elements were found in the order K>Ca>Mg>Fe>Na>Zn>Cu>Cr>Se. Samples collected from the middle zone of Yunnan were enriched in Na (242.24 ± 50.80 mg/kg) and Mg (959.78 ± 54.60 mg/kg). However, materials from the southeast zone were particularly enriched in Ca (3,448.70 ± 749.82 mg/kg), but depleted in Se. Whereas those from the northwest zone were plentiful of K (2,746.89 ± 84.84 mg/kg), Fe (923.06 ± 127.52 mg/kg), Zn (261.38 ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525872 Tue, 13 Dec 2011 05:00:00 +0100 5525872 http://www.medworm.com/index.php?rid=5526022&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%3D22161288%26dopt%3DAbstract Authors: Xiao Q, Qiu T, Huang S, Liu Y, He Z Abstract In this paper, we described the preparation and characterization of different types of modified CdSe/ZnS quantum dots (QDs) and explored the biological effects of QDs with different surface modifications on the whole growth of unicellular protozoan Tetrahymena thermophila BF(5) using a thermal activity monitor air isothermal microcalorimeter. Our results demonstrated that adenosine 5'-monophosphate (AMP) showed stronger interaction with QDs than other types of nucleotide. AMP-QDs could stimulate the growth of T. thermophila while mercaptoacetic acid-capped CdSe/ZnS quantum dots inhibited it. In addition, the population density determination and fluorescence imaging of T. thermophila BF(5) also confirmed the results obtained from... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526022 Sat, 10 Dec 2011 05:00:00 +0100 5526022 http://www.medworm.com/index.php?rid=5525903&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%3D22161289%26dopt%3DAbstract Authors: Mroczek-Zdyrska M, Wójcik M Abstract The effect of selenium (Se) on Vicia faba L. minor roots subjected to lead (Pb) stress was studied by investigating root growth, root viability, and antioxidant enzyme activity. The experiments were carried out on plants grown for 2 weeks on Hoagland medium supplied with 50 μM Pb in the form of lead nitrate Pb(NO(3))(2) and/or Se concentrations of 1.5 and 6 μM in the form of sodium selenite Na(2)SeO(3). It was shown that Pb reduced the root growth and caused serious damage in the roots, which was accompanied by metal accumulation in these tissues. The exposition of roots to Pb led to significant changes in the biochemical parameters: the MDA and T-SH content and glutathione peroxidase (GSH-Px) activity increased but the guaiacol p... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525903 Sat, 10 Dec 2011 05:00:00 +0100 5525903 http://www.medworm.com/index.php?rid=5525871&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%3D22161501%26dopt%3DAbstract Authors: Dahmardeh Behrooz R, Esmaili-Sari A, Peer FE, Amini M Abstract Human milk is usually the only source of food for infants during the first 4 to 5 months of their life. In this research, 80 human milk samples were collected from mothers in Tehran, Noushahr and the countryside of Tabriz, Iran, who were not occupationally exposed to mercury. The mean concentration of mercury in breast milk obtained from mothers in the countryside of Tabriz, Noushahr and Tehran was 0.86, 0.15 and 0.12 μg/L, respectively. There was a significant difference in mercury concentration in human breast milk between that from the countryside of Tabriz with that from Tehran and Noushahr. Only 3.7% of infant samples (three infants) had mercury concentration higher than normal versus the WHO recommende... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525871 Thu, 08 Dec 2011 05:00:00 +0100 5525871 http://www.medworm.com/index.php?rid=5525870&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%3D22161502%26dopt%3DAbstract Authors: Shetty SJ, Desai PB, Patil NM, Nayak RB Abstract Lithium carbonate is used in the treatment of both psychiatric and nonpsychiatric disorders. The aim of this study was to explore the relationship between serum lithium, salivary lithium, and urinary lithium. Blood, saliva, and urine samples were collected from 50 patients, and estimation of serum, salivary, and urine lithium was done using an atomic absorption spectrophotometer. Mean serum lithium was 0.75 ± 0.25 mEq/L, mean salivary lithium was 1.91 ± 0.80 mEq/L, and mean urine lithium was 7.16 ± 4.84 mEq/L. A significant direct correlation was found between serum lithium and salivary lithium (r = 0.695, p < 0.001). This correlation was higher in females (r = 0.770, p < 0.001) when c... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525870 Thu, 08 Dec 2011 05:00:00 +0100 5525870 http://www.medworm.com/index.php?rid=5526042&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%3D22147333%26dopt%3DAbstract Authors: Keser G, Buyuk G Abstract The present study was carried out to assess the impact of wastewater on parsley (Petroselinum crispum). The parameters determined for soil were pH, electrical conductivity (EC), soil organic matter (SOM), nutrient elements (Ca, Mg, Na, K, Mn, Cu, Zn, and Fe), and heavy metals (Cd, Cr, Ni, and Pb), while the parameters determined for the plant included pigment content, dry matter, nutrient element, and heavy metals. SOM, EC, and clay contents were higher, and pH was slightly acidic in soil treated with wastewater compared to control soil. The enrichment factors (EF) of the nutrient elements in contaminated soil are in the sequence of Na (2) > Ca (1.32) > Mn = Mg (1.17) > Cu (1.11) > Zn (1.08) > Fe (1.07) &gt... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526042 Wed, 07 Dec 2011 05:00:00 +0100 5526042 http://www.medworm.com/index.php?rid=5526024&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%3D22147334%26dopt%3DAbstract Authors: Beltcheva M, Metcheva R, Popov N, Teodorova SE, Heredia-Rojas JA, Rodríguez-de la Fuente AO, Rodríguez-Flores LE, Topashka-Ancheva M Abstract Zeolites, especially clinoptilolites, have wide application in removing heavy metals from different solutions and wastewater. The detoxification capacity of the clinoptilolite sorbent KLS-10-MA, a modified natural Bulgarian zeolite, applied as a food supplement in conditions of an ecotoxicological experiment with conventional food and lead was demonstrated for the first time. Laboratory mice, inbred imprinting control region strain, were used in a 90-day ecotoxicological experiment. Animals were divided into four experimental groups. Lead bioaccumulations in exposed and non-supplemented/supplemented with KLS-10-MA animals were comp... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526024 Wed, 07 Dec 2011 05:00:00 +0100 5526024 http://www.medworm.com/index.php?rid=5526047&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%3D22144015%26dopt%3DAbstract Authors: Mostafa-Gharehbaghi M, Mostafa-Gharabaghi P, Ghanbari F, Abdolmohammad-Zadeh H, Sadeghi GH, Jouyban A Abstract Bronchopulmonary dysplasia (BPD), also known as chronic lung disease, is one of the most challenging complications in premature newborn infants. Selenium plays a role in antioxidant system by protecting cell membranes and neutralizing the deleterious effects of free radicals. The aim of this study was to determine the relationship between selenium concentration and incidence of bronchopulmonary dysplasia using a validated analytical method. Umbilical cord blood and blood samples 30 days after the birth were collected from 38 preterm newborn infants with gestation age of 32 weeks or less, and the separated serums were kept at -70°C until analysis time. Selenium ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526047 Tue, 06 Dec 2011 05:00:00 +0100 5526047 http://www.medworm.com/index.php?rid=5526046&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%3D22144016%26dopt%3DAbstract Authors: de Lima AP, Pereira FD, Vilanova-Costa CA, Soares JR, Pereira LC, Porto HK, Pavanin LA, Dos Santos WB, Silveira-Lacerda ED Abstract Lung cancer is one of the leading causes of death in the world, and non-small cell lung carcinoma (NSCLC) accounts for approximately 75-85% of all lung cancers. In the present work, we studied the cytotoxic activity, cell cycle arrest and induction apoptosis of the compound cis-(dichloro)tetramineruthenium(III) chloride {cis-[RuCl(2)(NH(3))(4)]Cl} in human lung carcinoma tumor cell line A549. The results of MTT and trypan blue assays showed that cis-[RuCl(2)(NH(3))(4)]Cl causes reduction in the viability of A549 cells when treating with 95 and 383 μM of the compound for 48 and 72 h. Lower concentrations of the compound (19, 3.8 and 0.38 μ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526046 Tue, 06 Dec 2011 05:00:00 +0100 5526046 http://www.medworm.com/index.php?rid=5526045&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%3D22144017%26dopt%3DAbstract Authors: Dennouni-Medjati N, Harek Y, Tarik A, Lahcene L Abstract The purpose of this study was to assess whole blood selenium levels of 300 healthy adults living in four selected areas of the west of Algeria. Selenium was measured using differential pulse cathodic stripping voltammetry with a detection limit of 29.20 μg/L. The mean of whole blood selenium concentrations was 85.65 ± 21.60 μg/L ranging between 30.90 and 144.04 μg/L. This concentration did not vary significantly (P > 0.05) in relation to the gender of the subject, with concentrations of 87.75 ± 21.30 μg/L in men and 83.95 ± 21.60 μg/L in women group. Individuals older than 60 years had a whole blood selenium concentration significantly lower than the rest of the population. However, t... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526045 Tue, 06 Dec 2011 05:00:00 +0100 5526045 http://www.medworm.com/index.php?rid=5526044&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%3D22144018%26dopt%3DAbstract Authors: Topashka-Ancheva M, Beltcheva M, Metcheva R, Rojas JA, Rodriguez-De la Fuente AO, Gerasimova T, Rodríguez-Flores LE, Teodorova SE Abstract The detoxification capacity of the clinoptilolite modification KLS-10-MA used as food additive in small mammals, chronically lead-exposed, was proven for the first time. The modified clinoptilolite was prepared based on natural Bulgarian clinoptilolite deposits. As a powder, it was mechanically mixed at 12.5% concentration with the conventional forage for small rodents. Lead in the form of aqueous solution of Pb(NO(3))(2) was diluted in the drinking water. In the ecotoxicological experiment covering 90 days, imprinting control region laboratory mice were used. They were allocated into four groups: group 1, (control): animals fed with ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526044 Tue, 06 Dec 2011 05:00:00 +0100 5526044 http://www.medworm.com/index.php?rid=5526048&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%3D22139749%26dopt%3DAbstract In conclusion, an acute lung injury causes declines of the levels of TEs in serum and lung which can be significantly prevented by TE supplementation and which can also mitigate some of the morphological and biomechanical changes in ALI. PMID: 22139749 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526048 Sat, 03 Dec 2011 05:00:00 +0100 5526048 http://www.medworm.com/index.php?rid=5526050&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%3D22134892%26dopt%3DAbstract Authors: Roecker R, Junges GM, de Lima DD, Pereira da Cruz JG, Wyse AT, Dal Magro DD Abstract In the present study, we investigated, in vivo (acute and chronic) and in vitro, the effects of proline on the activities of antioxidant enzymes such as catalase (CAT), glutathione peroxidase and superoxide dismutase (SOD) in erythrocytes and also investigated the effect on thiobarbituric acid-reactive substances (TBARS) in the plasma of rats. For the experiments, the number of animals per group ranged from eight to ten. For acute administration, 29-day-old rats received one subcutaneous injection of proline (18.2 μmol/g body weight) or an equivalent volume of 0.9% saline solution (control) and were killed 1 h later. For chronic treatment, buffered proline was injected subcutaneously in... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526050 Fri, 02 Dec 2011 05:00:00 +0100 5526050 http://www.medworm.com/index.php?rid=5526049&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%3D22134893%26dopt%3DAbstract Authors: Kim AD, Zhang R, Kang KA, You HJ, Kang KG, Hyun JW Abstract Vanadium compounds have shown promise in the treatment of diabetes and in cancer prevention. The aim of this study is to investigate the effects of Jeju ground water, containing the vanadium compounds S1 (8.0 ± 0.9 μg/l) and S3 (26.0 ± 2.0 μg/l), and of vanadyl sulfate (VOSO(4), 26 μg/l) on antioxidant systems in human Chang liver cells. Cells were incubated for ten passages in media containing deionized distilled water, Jeju ground water (S1, S3), or VOSO(4). S1 and S3 increased the gene and protein expression and the enzymatic activities of antioxidant enzymes, including superoxide dismutase, catalase, glutathione peroxidase, and heme oxygenase. VOSO(4) was likewise found to improve mRNA and prot... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526049 Fri, 02 Dec 2011 05:00:00 +0100 5526049 http://www.medworm.com/index.php?rid=5525866&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%3D22180012%26dopt%3DAbstract Authors: Wang J, Zhu X, Li X, Wang W, Wang X, Liu L, Deng Q, Bai G, Wang J, Feng H, Wang Z, Liu G Abstract Chondrocytes from the lateral trochlear ridge of the distal femur taken from 1-day-old piglets were cultured in medium supplemented with 0, 7.8, 15.6, 31.2, and 62.5 μmol/L copper. Insulin-like growth factor-1 (IGF-1) and IGF-binding protein 3 (IGFBP-3) levels in culture medium were determined by radioimmunoassay. DNA synthesis in chondrocytes was measured by tritiated thymidine ((3)H-TdR) incorporation. Proliferation-promoting activity and incorporation of (3)H-TdR in chondrocytes were increased in all culture media supplemented with copper and 15% fetal calf serum (FCS). The contents of IGF-1 and IGFBP-3 were also enhanced significantly in culture media containing 15% FCS ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525866 Thu, 01 Dec 2011 05:00:00 +0100 5525866 http://www.medworm.com/index.php?rid=5525865&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%3D22180013%26dopt%3DAbstract Authors: Deng Y, Xu D, Xu B, Xu Z, Tian Y, Feng W, Liu W, Yang H Abstract Occupational or environmental exposure to excessive Mn would cause manganism, which is resembled Parkinson disease. However, the mechanism underlying manganism is still unknown. It had been documented that astrocytes play important roles in physiological function in brain. Therefore, in the present study, the cultured astrocytes were exposed to 0, 125, 250, and 500 μM MnCl(2), and cell viability, lactate dehydrogenase (LDH) leakage, morphological change, cell cycle progression, and apoptosis were determined. In addition, 100 μM riluzole (a glutamatergic modulator) was pretreated for 6 h before no MnCl(2) exposure or 500 μM MnCl(2) exposure. The results showed that cell viability inhibited, LDH leakage ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5525865 Thu, 01 Dec 2011 05:00:00 +0100 5525865 http://www.medworm.com/index.php?rid=5526055&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%3D22127829%26dopt%3DAbstract Authors: Ghazi S, Habibian M, Moeini MM, Abdolmohammadi AR Abstract This experiment was carried out to investigate the effects of different levels of organic and inorganic chromium on the performance, immune function and some serum mineral concentrations of broilers under heat stress condition (23.9-37°C cycling). A total of 150 one-day-old broiler chicks according to a completely randomized design were assigned into five treatment groups. Each treatment consisted of three replicates and each replicate contained ten chicks. Chicks were fed on corn-soybean meal basal diets with added different concentrations of chromium (0, 600 and 1,200 μg kg(-1) chromium chloride or 600 and 1,200 μg/kg chromium L: -methionine) from 1 to 49 days of age. Humoral immunity was assessed by intra... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526055 Wed, 30 Nov 2011 05:00:00 +0100 5526055 http://www.medworm.com/index.php?rid=5526054&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%3D22127830%26dopt%3DAbstract In this report, we have investigated the role of copper (Cu) and zinc (Zn) in oxidative stress induced by cadmium (Cd) in C6 cells. Cells were exposed to 20 μM Cd, 500 μM Cu, and 450 μM Zn for 24 h. Then, toxic effects, cellular metals levels, oxidative stress parameters, cell death, as well as DNA damage were evaluated. Cd induced an increase in cellular Cd, Cu, and Zn levels. This results not only in the inhibition of GSH-Px, GRase, CAT, and SOD activities but also in ROS overproduction, oxidative damage, and apoptotic cell death not related to Cu and Zn mechanisms. The thiol groups and GSH levels decreased, whereas the lipid peroxidation and DNA damage increased. The toxicity of Zn results from the imbalance between the inhibition of antioxidant activities and the induction of MT... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526054 Wed, 30 Nov 2011 05:00:00 +0100 5526054 http://www.medworm.com/index.php?rid=5526053&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%3D22127831%26dopt%3DAbstract Authors: Sadeghian S, Kojouri GA, Mohebbi A Abstract The present study was designed to compare the effects of nano red selenium and sodium selenite on the antioxidative activities of neutrophils and the hematological parameters in sheep. Fifteen sheep were randomly allocated into three groups. Groups 1 and 2 received selenium nanoparticles orally at 1 mg/kg and sodium selenite at 1 mg Se/kg for 10 consecutive days; group 3 served as the control. To assess the degrees of oxidative stress and of lipid peroxidation of the cellular membranes, the levels of thiobarbituric acid reactive substances (TBARS) were determined in serum samples that were collected at different supplementation intervals, i.e., after 0, 10, 20, and 30 days. In addition, hematological parameters in the serum sa... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526053 Wed, 30 Nov 2011 05:00:00 +0100 5526053 http://www.medworm.com/index.php?rid=5526052&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%3D22127832%26dopt%3DAbstract In this study 19 autistic and 19 age-matched normal Omani children were recruited to analyze their degree of redox status and a prewritten consent was obtained. Blood was withdrawn from subjects in heparin-coated tube, and plasma was separated. Plasma oxidative stress indicators such as nitric oxide (NO), malondialdehyde (MDA), protein carbonyl, and lactate to pyruvate ratio were quantified using commercially available kits. A significant elevation was observed in the levels of NO, MDA, protein carbonyl, and lactate to pyruvate ratio in the plasma of Omani autistic children as compared to their age-matched controls. These oxidative stress markers are strongly associated with major cellular injury and manifest severe mitochondrial dysfunction in autistic pathology. Our results also suggest ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526052 Wed, 30 Nov 2011 05:00:00 +0100 5526052 http://www.medworm.com/index.php?rid=5526051&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%3D22127833%26dopt%3DAbstract Authors: Fujii T, Matsuo T, Okamura K Abstract Resistance exercise increases heme synthesis in the bone marrow and the hemoglobin in iron-deficient rats. Post-exercise early nutrient provision facilitates skeletal muscle protein synthesis compared to late provision. However, the effects of post-exercise nutrition timing on hemoglobin synthesis are unclear. The current study investigated the effect of post-exercise meal timing on the activity of the key enzyme involved in hemoglobin synthesis, δ-aminolevulinic acid dehydratase (ALAD), in the bone marrow and examined the hemoglobin concentration in iron-deficient rats. Male 4-week-old Sprague-Dawley rats were fed an iron-deficient diet containing 12 mg iron/kg and performed climbing exercise (5 min × 6 sets/day, 3 days/week)... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526051 Wed, 30 Nov 2011 05:00:00 +0100 5526051 http://www.medworm.com/index.php?rid=5526058&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%3D22124861%26dopt%3DAbstract Authors: Kaur S, Singh HP, Batish DR, Negi A, Mahajan P, Rana S, Kohli RK Abstract The present study investigated the effect of Arsenic (As; 5, 10, 50 μM) on protein and sugar metabolism vis-à-vis oxidative damage during early germination process and radicle emergence (at 12, 24 and 48 h stage) in Phaseolus aureus. As-exposure (50 μM) significantly enhanced protein content (by 40-60%), whereas carbohydrate content declined (by 31-44%) over that in the control. It was associated with a decline in the activities of proteases (47-53%), and increase in the activities of α- and β-amylases, starch phosphorylases, and acid invertases by 3.0, 2.6, 4.8, and 1.7 times after 48 h exposure to 50 μM As. The alteration in protein and carbohydrate metabolic machinery was also accompani... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526058 Tue, 29 Nov 2011 05:00:00 +0100 5526058 http://www.medworm.com/index.php?rid=5526057&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%3D22124862%26dopt%3DAbstract Authors: Domingo JL, Perelló G, Giné Bordonaba J Abstract The daily intakes of arsenic (As), beryllium, cadmium (Cd), cobalt, chromium, copper, mercury (Hg), manganese, nickel, lead (Pb), antimony, tin, thallium, uranium, vanadium, and zinc by an adult population living in Tarragona County (Catalonia, Spain) were determined by the duplicate diet method with a 10-day sampling period. Duplicate diet samples, prepared as per consumption, were collected during September 2010 in 20 restaurants offering a variety of daily menus (breakfast, lunch, and dinner). A total of 200 composite samples, corresponding to 600 individual samples, were prepared for trace elements analyses, which were carried out by inductively coupled plasma mass spectrometry. The results were compared with data from... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526057 Tue, 29 Nov 2011 05:00:00 +0100 5526057 http://www.medworm.com/index.php?rid=5526056&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%3D22124863%26dopt%3DAbstract The objective of this study was to find out whether benzo(a)pyrene (BaP), a common environmental co-contaminant, increases Cd toxicity through inhibition of metallothionein (MT) synthesis-a low molecular weight protein that is considered to be primary intracellular component of the protective mechanism. For 6 weeks, the female bank voles were provided with diet containing Cd [less than 0.1 μg/g (control) and 60 μg/g dry wt.] and BaP (0, 5, and 10 μg/g dry wt.) alone or in combination. At the end of exposure period, apoptosis and analyses of MT, Cd, and zinc (Zn) in the liver and kidneys were carried out. Dietary BaP 5 μg/g did not affect but BaP 10 μg/g potentiated rather than inhibited induction of hepatic and renal MT by Cd, and diminished Cd-induced apoptosis in both organs. ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526056 Tue, 29 Nov 2011 05:00:00 +0100 5526056 http://www.medworm.com/index.php?rid=5526060&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%3D22116679%26dopt%3DAbstract Authors: Yang H, Xu Z, Liu W, Wei Y, Deng Y, Xu B Abstract As a highly toxic environmental pollutant, methylmercury (MeHg) can cause neurotoxicity in animals and humans. Considering the antioxidant property of grape seed proanthocyanidin extracts (GSPE), this study was aimed to evaluate the effect of GSPE on MeHg-induced neurotoxicity in rats. Rats were exposed to MeHg by intraperitoneal injection (4, 12 μmol/kg, respectively) and GSPE was administered by gavage (250 mg/kg) 2 h later. After a 4-week treatment, phosphate-activated glutaminase, glutamine synthetase, glutathione peroxidase and superoxide dismutase activities, glutamate, glutamine, malondialdehyde and glutathione contents in cerebral cortex were measured. Reactive oxygen species (ROS) and apoptosis were also estima... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526060 Fri, 25 Nov 2011 05:00:00 +0100 5526060 http://www.medworm.com/index.php?rid=5526059&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%3D22116680%26dopt%3DAbstract Authors: Wang K, Cui H, Deng Y, Peng X, Fang J, Zuo Z, Cui W Abstract The purpose of this 42-day study was to examine the effect of dietary vanadium on the ileac T cells and contents of cytokines including interleukin-2 (IL-2), interleukin-6 (IL-6), and interferon-gamma (IFN-γ) in broilers by flow cytometry and enzyme-linked immunosorbent assay. A total of 420 one-day-old avian broilers were divided into six groups (seven replicates in each group and ten broilers in each replicate) and fed on control diet or the same diet supplemented with 5, 15, 30, 45, and 60 mg/kg vanadium in the form of ammonium metavanadate. The results showed that the percentages of CD3(+), CD3(+)CD4(+), and CD3(+)CD8(+) T cells in both ileac lamina propria lymphocytes (LPLs) and intraepithelial lymphocytes... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526059 Fri, 25 Nov 2011 05:00:00 +0100 5526059 http://www.medworm.com/index.php?rid=5526061&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%3D22113263%26dopt%3DAbstract This study suggests that regardless of the differences in tolerance to Cd by the three ECM fungi, they could have biotechnological applications for soil remediation. However, Sc has greater possibilities of being used successfully when high concentrations of Cd prevail in the environment. PMID: 22113263 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526061 Thu, 24 Nov 2011 05:00:00 +0100 5526061 http://www.medworm.com/index.php?rid=5526062&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%3D22109809%26dopt%3DAbstract Authors: Wang J, Yang Z, Lin L, Zhao Z, Liu Z, Liu X Abstract Oxidative stress is thought to be involved in lead-induced toxicity. The aim of this study was to investigate the possible protective role of naringenin on lead-induced oxidative stress in the liver and kidney of rats. In the present investigation, lead acetate (500 mg Pb/L) was administered orally for 8 weeks to induce hepatotoxicity and nephrotoxicity. The levels of hepatic and renal markers such as alanine aminotransferase, aspartate aminotransferase, urea, uric acid, and creatinine were significantly (P < 0.05) increased following lead acetate administration. Lead-induced oxidative stress in liver and kidney tissue was indicated by a significant (P < 0.05) increase in the level of maleic dialdehyde an... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526062 Wed, 23 Nov 2011 05:00:00 +0100 5526062 http://www.medworm.com/index.php?rid=5526063&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%3D22105658%26dopt%3DAbstract Authors: Kojouri GA, Sadeghian S, Mohebbi A, Mokhber Dezfouli MR Abstract The present study was designed to compare the effects of nano-selenium and of sodium selenite on the chemotactic and respiratory burst activities of neutrophils in sheep. Fifteen sheep were randomly divided into three groups. Groups 1 and 2 received selenium nanoparticles (1 mg/kg) or sodium selenite (1 mg/kg) orally, respectively, for ten consecutive days, and the third group was considered as the control. To determine the chemotactic and respiratory burst activities of the neutrophils, the leading front assay and the NBT test were used on heparinized blood samples that were collected at different intervals (days 0, 10th, 20th, and 30th). The results obtained showed that the chemotactic activities in grou... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5526063 Tue, 22 Nov 2011 05:00:00 +0100 5526063 http://www.medworm.com/index.php?rid=5437048&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%3D22101472%26dopt%3DAbstract Authors: Iannone MF, Rosales EP, Groppa MD, Benavides MP Abstract In the present work, the response of tobacco (Nicotiana tabaccum L.) wild-type SR1 and transgenic CAT1AS plants (with a basal reduced CAT activity) was evaluated after exposure to the herbicide paraquat (PQ). Superoxide anion (O (2) (.-) ) formation was inhibited at 3 or 21 h of exposure, but H(2)O(2) production and ion leakage increased significantly, both in SR1 or CAT1AS leaf discs. NADPH oxidase activity was constitutively 57% lower in non-treated transgenic leaves than in SR1 leaves and was greatly reduced both at 3 or 21 h of PQ treatment. Superoxide dismutase (SOD) activity was significantly reduced by PQ after 21 h, showing a decrease from 70% to 55%, whereas catalase... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5437048 Sat, 19 Nov 2011 05:00:00 +0100 5437048 http://www.medworm.com/index.php?rid=5437047&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%3D22101473%26dopt%3DAbstract Authors: Zhang L, Li Q, Yang X, Xia Z Abstract To improve the nutritional value of chickpea food, selenium (Se)-rich chickpea sprouts were produced by germination of chickpea seeds for 6 days at 28 centigrade in the presence of various concentrations of Na(2)SeO(3) in germination solution. High concentrations of selenite were found to inhibit the growth of chickpea sprout and the biosynthesis of isoflavones formononetin and biochanin A. However, chickpea sprouts could tolerate up to ∼50 mg/L of Na(2)SeO(3), under which condition the product chickpea sprouts contained a high Se content (2.14 μg/g dry weight) and a moderate high content of isoflavones (601.56 μg biochanin A/g dry weight and 578.11 μg formononetin/g dry weight). Se was incorporated in chickpea sprout in the ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5437047 Sat, 19 Nov 2011 05:00:00 +0100 5437047 http://www.medworm.com/index.php?rid=5437046&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%3D22101474%26dopt%3DAbstract Authors: Govil N, Chaudhary S, Waseem M, Parvez S Abstract Cadmium (Cd) is a toxic heavy metal commonly found in industrial workplaces, a food contaminant and a major constituent of cigarette smoke. Most of the organs are susceptible to Cd-induced toxicity, including brain. Postnuclear supernatant (PNS) has been accepted as an in vitro model for assessing xenobiotic induced toxicity. The goal of the present study was to validate PNS as an in vitro model for investigating the effect of Cd-induced neurotoxicity. Neurotoxic induction by Cd was established in a dose-dependent manner in PNS in vitro. Enzymatic and non-enzymatic antioxidants were used as biomarkers of exposure. Antioxidant enzymatic activity was measured as a significant increase in activities of catalase, superoxide dis... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5437046 Sat, 19 Nov 2011 05:00:00 +0100 5437046 http://www.medworm.com/index.php?rid=5437050&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%3D22095291%26dopt%3DAbstract Authors: Bharti VK, Srivastava RS, Sharma B, Malik JK Abstract Arsenic (As) toxicity through induction of oxidative stress is a well-known mechanism of organ toxicity. To address this problem, buffalo epiphyseal proteins (BEP, at 100 μg/kg BW, i.p. for 28 days) were administered intraperitoneally to female Wistar rats exposed to As (100 ppm sodium arsenite via drinking water for 28 days). Arsenic exposure resulted in marked elevation in lipid peroxidation in brain, cardiac, and hepatic tissues, whereas significant (p < 0.05) adverse change in catalase, superoxide dismutase, glutathione reductase, glutathione peroxidase, and reduced glutathione level were observed in cardiac, hepatic, and brain tissues of As-administered animals. BEP significantly (p < 0.05) count... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5437050 Fri, 18 Nov 2011 05:00:00 +0100 5437050 http://www.medworm.com/index.php?rid=5437049&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%3D22095292%26dopt%3DAbstract Authors: Mao CX, Chen MM, Wang L, Zou H, Liang CJ, Wang LH, Zhou Q Abstract Effects of cerium ion (Ce(III)) on water relations of soybean seedlings (Glycine max L.) under ultraviolet B radiation (UV-B, 280-320 nm) stress were investigated under laboratory conditions. UV-B radiation not only affected the contents of two osmolytes (proline, soluble sugar) in soybean seedlings, but also inhibited the transpiration in soybean seedlings by decreasing the stomatal density and conductance. The two effects caused the inhibition in the osmotic and metabolic absorption of water, which decreased the water content and the free water/bound water ratio. Obviously, UV-B radiation led to water stress, causing the decrease in the photosynthesis in soybean seedlings. The pretreatment with 20 mg L... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5437049 Fri, 18 Nov 2011 05:00:00 +0100 5437049 http://www.medworm.com/index.php?rid=5437051&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%3D22089971%26dopt%3DAbstract Authors: Pilarczyk B, Jankowiak D, Tomza-Marciniak A, Pilarczyk R, Sablik P, Drozd R, Tylkowska A, Skólmowska M Abstract The aim of the study was to evaluate the activity of glutathione peroxidase (GSH-Px) and the concentration of selenium in Holstein-Friesian cows at different stages of lactation. Selenium was determined spectrofluorimetrically and GSH-Px activity using a Sigma CGP1 Glutathione Peroxidase Cellular Activity Assay kit. Mean serum selenium concentration was highest in early-lactation multiparous cows (0.18 μg/ml) and the lowest in dry cows (0.111 μg/ml). In early lactation, serum selenium concentration was significantly (P ≤ 0.01) higher in multiparous cows than in cows from the other groups. Mean GSH-Px activity in the serum of dry cows was over twice low... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5437051 Thu, 17 Nov 2011 05:00:00 +0100 5437051 http://www.medworm.com/index.php?rid=5437052&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%3D22086647%26dopt%3DAbstract Authors: Zhang J, Li J, Zhang Z, Sun B, Wang R, Jiang Z, Li S, Xu S Abstract Previous results revealed a ubiquitous expression pattern of selenoprotein N (SelN, SEPN1) in humans, zebrafish, and mouse, suggesting that it plays a potential role during the embryogenesis of these species. However, no information is known about the tissue distribution of SelN and mRNA expression analysis in the muscle tissues during development in birds. We analyzed the mRNA expression of SelN in 26 different tissues of 90-day-old chickens and the expression of SelN in the muscle tissues of 12-day-old chicken embryos and 15-month-old adult chickens by quantitative real-time PCR. The results showed that SelN transcripts were expressed widely in the chicken tissues. Moreover, the expression of SelN mRNA i... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5437052 Wed, 16 Nov 2011 05:00:00 +0100 5437052 http://www.medworm.com/index.php?rid=5412041&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%3D22083423%26dopt%3DAbstract Authors: Popham HJ, Sun R, Shelby KS, Robertson JD Abstract We studied how biologically relevant trace metals (i.e., micronutrients) in the hemolymph of larval Heliothis virescens and Helicoverpa zea (Lepidoptera: Noctuidae) changed in response to per os baculovirus infection, larval development, and injection of heat-killed bacteria. Concentrations of hemolymph Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, and Zn were measured using inductively coupled plasma-mass spectrometry. H. virescens larvae exhibited greater fluctuations in hemolymph trace metal levels in response to baculovirus infection and development than did H. zea larvae. H. zea single nucleopolyhedrosis virus infection significantly altered the levels of Cu, Fe, Mg, Mn, Mo, and Zn in fourth instar H. virescens larvae. Conversely, ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412041 Tue, 15 Nov 2011 05:00:00 +0100 5412041 http://www.medworm.com/index.php?rid=5412040&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%3D22083424%26dopt%3DAbstract Authors: Yang B, Liu R, Hao X, Wu Y, Du J Abstract Due to their unique fluorescent properties, quantum dots present a great potential for biolabelling applications; however, the toxic interactions of quantum dots with biopolymers are little known. The toxic interactions of glutathione-capped CdTe quantum dots with trypsin were studied in this paper using synchronous fluorescence spectroscopy, fluorescence emission spectra, and UV-vis absorption spectra. The interaction between CdTe quantum dots and trypsin resulted in structure changes of trypsin and inhibited trypsin's activity. Fluorescence emission spectra revealed that the quenching mechanism of trypsin by CdTe quantum dots was a static quenching process. The binding constant and the number of binding sites at 288 and 298 K we... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412040 Tue, 15 Nov 2011 05:00:00 +0100 5412040 http://www.medworm.com/index.php?rid=5412048&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%3D22081403%26dopt%3DAbstract Authors: Wang F, Lu L, Li S, Liu S, Zhang L, Yao J, Luo X Abstract An experiment was conducted to investigate the bioavailability of organic manganese proteinate (Mn) relative to inorganic Mn sulfate for broilers fed a conventional corn-soybean meal basal diet. A total of 448-day-old Arbor Acres commercial male chicks were fed the Mn-unsupplemented basal diet (control) or basal diet supplemented with 60, 120, or 180 mg Mn/kg from each Mn source. At 21 days of age, heart tissue was excised for testing DM, Mn concentration, manganese superoxide dismutase (MnSOD) activity, and MnSOD mRNA level. The Mn concentration, MnSOD activity, and MnSOD mRNA level in heart tissue increased (P < 0.01) linearly as dietary manganese concentration increased. Based on slope ratios from multip... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412048 Sat, 12 Nov 2011 05:00:00 +0100 5412048 http://www.medworm.com/index.php?rid=5412043&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%3D22081404%26dopt%3DAbstract In conclusion, these results indicate that supplemental MMEY inhibits hyperglycemia, abates oxidative stress, modulates disorders of lipid metabolism, and reduces the impairment of immune function in diabetic mice; especially notable are the protective effects of medium doses of MMEY on the islet cells of diabetic mice. PMID: 22081404 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412043 Sat, 12 Nov 2011 05:00:00 +0100 5412043 http://www.medworm.com/index.php?rid=5412042&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%3D22081405%26dopt%3DAbstract Authors: Liang D, Yang M, Guo B, Cao J, Yang L, Guo X Abstract Zinc is an essential element for bone formation; however, its role in osteoblast has not been well understood. In the present study, we hypothesized that zinc could increase osteogenetic function by stimulating osteoblast proliferation and osteoprotegerin (OPG) activity. To test this hypothesis, osteoblastic MC3T3-E1 cells were cultured and treated with various concentrations of zinc (0, 10, 30, 50, 70, 110, 130, and 150 μM) for 24 and 48 h. 3-[4,5-dimethylthiazol-2-y]-2,5-diphenyltetrazolium bromide assay showed that cell proliferation was significantly stimulated with 50 μM zinc treatment. Furthermore, under the same treatment condition, OPG expression was significantly increased as evidenced by the results of RT... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412042 Sat, 12 Nov 2011 05:00:00 +0100 5412042 http://www.medworm.com/index.php?rid=5412119&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%3D22076732%26dopt%3DAbstract Authors: Huang L, Yu X, Zhang J, Liu X, Zhang Y, Jiao X, Yu X Abstract Wilson disease is an inherited autosomal recessive disorder causing copper accumulation and consequent toxicity. D: -Penicillamine, a potent metal chelator, is an important therapy for Wilson disease. To investigate the changes of metal elements under the treatment of D: -penicillamine, we determined the levels of Cu, Zn, Mg, Ca, Fe, Se, Mn, Pb, Hg, Cd, As, Tl, and Al by ICP-MS in 24-h urine of 115 Wilson disease patients who had received treatment with D: -penicillamine for 1 month to 22 years at maintenance doses, as well as 115 age-matched, healthy controls. The levels of Cu, Mg, Ca, Zn, Hg, Pb, Tl, Cd, and Mn in the 24-h urine of the cases were significantly higher than those of the controls (P < 0.... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412119 Fri, 11 Nov 2011 05:00:00 +0100 5412119 http://www.medworm.com/index.php?rid=5412081&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%3D22076733%26dopt%3DAbstract Authors: Li B, Xie Y, Cheng Z, Cheng J, Hu R, Cui Y, Gong X, Shen W, Hong F Abstract One of the most important agents causing lethal disease in the silkworm is the Bombyx mori nucleopolyhedrovirus (BmNPV), while low-dose rare earths are demonstrated to increase immune capacity in animals. However, very little is known about the effects of added CeCl(3) on decreasing BmNPV infection of silkworm. The present study investigated the effects of added CeCl(3) to an artificial diet on resistance of fifth-instar larvae of silkworm to BmNPV infection. Our findings indicated that added CeCl(3) significantly decreased inhibition of growth and mortality of fifth-instar larvae caused by BmNPV infection. Furthermore, the added CeCl(3) obviously decreased lipid peroxidation level and accumulation... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412081 Fri, 11 Nov 2011 05:00:00 +0100 5412081 http://www.medworm.com/index.php?rid=5412058&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%3D22076734%26dopt%3DAbstract Authors: Chen X, Zhu G, Jin T, Zhou Z, Gu S, Qiu J, Xiao H Abstract Low level of cadmium exposure may have direct effects on bone. But the probable mechanism is far from clarified. Using a co-culture system, the present study investigated the effects of low level of cadmium exposure on osteoclast differentiation in the presence of osteoblasts. Primary osteoblasts were isolated from calvarial bone of newborn Sprague Dawley rats. Primary osteoblasts and RAW264.7 cells were exposed to cadmium (0-60 nmol/l) in a co-culture system. Then, osteoblast viability was observed by MTT (3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide) assay. Osteoclast formation and tartrate-resistant acid phosphatase 5b levels were determined by tartrate-resistant acid phosphatase staining and ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412058 Fri, 11 Nov 2011 05:00:00 +0100 5412058 http://www.medworm.com/index.php?rid=5412128&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%3D22072216%26dopt%3DAbstract Authors: Tohno Y, Tohno S, Taniguchi A, Azuma C, Minami T, Mahakkanukrauh P Abstract To elucidate characteristics of the three ligaments constituting the spring ligament complex from a viewpoint of elements, the authors investigated age-related changes of elements, relationships among their elements, relationships among ligaments in the elements, and gender differences in the three ligaments of the spring ligament complex, the superomedial calcaneonavicular (SMCN), inferoplantar longitudinal calcaneonavicular (ICN), and third or medioplantar oblique calcaneonavicular (TCN) ligaments. After ordinary dissection at Nara Medical University was finished, the SMCN, ICN, and TCN ligaments of the spring ligament complex were removed from the subjects. The subjects consisted of 10 men and 1... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412128 Thu, 10 Nov 2011 05:00:00 +0100 5412128 http://www.medworm.com/index.php?rid=5412140&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%3D22068727%26dopt%3DAbstract Authors: Attar AM, Kharkhaneh A, Etemadifar M, Keyhanian K, Davoudi V, Saadatnia M Abstract Exposure to heavy metals has been associated to a higher incidence of multiple sclerosis. In this work, we present a possible relationship between serum mercury levels and development of multiple sclerosis in Isfahan, the third largest city in Iran. Seventy-four patients affected by multiple sclerosis were retrieved from multiple sclerosis (MS) clinic in Isfahan, Iran. By matching sex and age, 74 healthy volunteers were chosen as control group. Blood samples were collected and serum mercury content was determined. Serum mercury level in MS patients was significantly higher than controls (9.6 ± 10.17 vs. 5.7 ± 8.6, P = 0.037). Concerning all MS patients, serum mercury value was ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412140 Wed, 09 Nov 2011 05:00:00 +0100 5412140 http://www.medworm.com/index.php?rid=5412139&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%3D22068728%26dopt%3DAbstract Authors: Espinoza A, Le Blanc S, Olivares M, Pizarro F, Ruz M, Arredondo M Abstract Iron (Fe), copper (Cu), and zinc (Zn) fulfill various essential biological functions and are vital for all living organisms. They play important roles in oxygen transport, cell growth and differentiation, neurotransmitter synthesis, myelination, and synaptic transmission. Because of their role in many critical functions, they are commonly used in food fortification and supplementation strategies globally. To determine the involvement of divalent metal transporter 1 (DMT1) and human copper transporter 1 (hCTR1) on Fe, Cu, and Zn uptake, Caco-2 cells were transfected with four different shRNA plasmids to selectively inhibit DMT1 or hCTR1 transporter expression. Fe and Cu uptake and total Zn content me... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412139 Wed, 09 Nov 2011 05:00:00 +0100 5412139 http://www.medworm.com/index.php?rid=5412137&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%3D22068729%26dopt%3DAbstract Authors: Guo S, Shi D, Liao S, Su R, Lin Y, Pan J, Tang Z Abstract To investigate the influence of selenium on body weights and the immune organ indexes in ducklings administrated with aflatoxin B(1) (AFB(1)), 90 7-day-old ducklings were randomly divided into three groups (groups I-III). Group I was used as a blank control. Group II was administered with AFB(1) (0.1 mg/kg body weight). Group III was administered with AFB(1) (0.1 mg/kg body weight) plus sodium selenite (1 mg/kg body weight). All treatments were given once daily for 21 days. It showed that the ducklings' bursa of fabricius, thymus indexes, and body weights in group II significantly decreased when compared with group I (P < 0.01). Furthermore, the spleen indexes significantly decreased (P < 0.01). Ho... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412137 Wed, 09 Nov 2011 05:00:00 +0100 5412137 http://www.medworm.com/index.php?rid=5412136&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%3D22068730%26dopt%3DAbstract Authors: Bragança VL, Melnikov P, Zanoni LZ Abstract Fruit juices are widely consumed in tropical countries as part of habitual diet. The concentrations of several minerals in these beverages were evaluated. Four commercially available brands of juices were analyzed for cadmium, lead, copper, zinc, aluminum, iron, chromium, manganese, and molybdenum. The levels ranged from 0.02 to 0.08 mg/L for copper, from 0.05 to 0.23 mg/L for zinc, from 0.1 to 0.4 mg/L for aluminum, from 0.02 to 0.45 mg/L for iron, and from 0.01 to 0.22 mg/L for manganese. The levels of cadmium, lead, and chromium in all samples were very low or undetectable. The metal contents of fruit juices depend on a number of factors, including the soil composition, the external conditions during fruit growing and fr... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412136 Wed, 09 Nov 2011 05:00:00 +0100 5412136 http://www.medworm.com/index.php?rid=5412133&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%3D22068731%26dopt%3DAbstract This study evaluates the influence of methionine and vitamin E on fluoride concentration in bones and teeth of rats subjected to long-term exposure to sodium fluoride in drinking water. The study was conducted in 30 3-month-old female Wistar FL rats. The animals were divided into five groups, six rats per group. The control group consisted of rats receiving only distilled water as drinking water. All other groups received NaF in the amount of 10 mg/kg of body mass/day in their drinking water. In addition, respective animal groups received: NaF + Met group-10 mg of methionine/kg of body mass/day, NaF + Met + E group-10 mg of methionine/kg of body mass/day and 3 mg of vitamin E (tocopheroli acetas)/rat/day and NaF + E group-3 mg of vitamin E/rat/day. Femoral bones and incisor teeth were... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412133 Wed, 09 Nov 2011 05:00:00 +0100 5412133 http://www.medworm.com/index.php?rid=5412132&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%3D22068732%26dopt%3DAbstract In this study, dietary samples were collected from 60 families of the lung cancer and control groups and abundances of 14 trace elements were determined using inductively coupled-plasma mass spectroscopy. Accuracy and sensitivity of the method were demonstrated by analyzing national standard reference materials. The results showed that the dietary intake of the trace elements contributed 96.6% of total intake. Among the 14 elements tested, cadmium and titanium were found to be present at a significantly higher level in the food consumed by the cancer group than by the control group. The intake of selenium by the population living in the areas is much lower than what it should be, with the people in the cancer group experiencing even more severe selenium deficiency. In addition, in both gro... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412132 Wed, 09 Nov 2011 05:00:00 +0100 5412132 http://www.medworm.com/index.php?rid=5412141&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%3D22057978%26dopt%3DAbstract Authors: Yin Y, Wen K, Wu Y, Kang Y, Lou J Abstract The mechanism(s) by which taurine magnesium coordination compound (TMCC) inhibits experimental arrhythmias remains poorly understood. The purpose of this study was to observe the effects of TMCC against cesium chloride-induced arrhythmia in the rabbit heart and find whether the antiarrhythmic activity is related to inhibition of sodium current. Early afterdepolarization was induced by 1.5 mM cesium chloride (1 ml kg(-1)) through intravenous injection. The monophasic action potentials (MAP) and electrocardiograms were simultaneously recorded. The effect of TMCC on functional refractory periods (FRPs) in the left atrium was also observed in vitro. Arrhythmias onset was significantly retarded by TMCC. The number of ventricular pre... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5412141 Thu, 03 Nov 2011 04:00:00 +0100 5412141 http://www.medworm.com/index.php?rid=5376800&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%3D22048885%26dopt%3DAbstract Authors: Deng Y, Xu Z, Liu W, Yang H, Xu B, Wei Y Abstract To evaluate the protective potential of lycopene (Lyc) and proanthocyanidins (PCs) against mercuric chloride (HgCl(2))-induced hepatotoxicity, the study focused on the mechanism of oxidative stress. Firstly, the rats were subcutaneously (s.c.) injected with 0, 2.2, 4.4, and 8.8 μmol/kg HgCl(2). Additionally, 40 mg/kg Lyc and 450 mg/kg PCs were given to the rats intragastrically (i.g.) before exposure to 8.8 μmol/kg HgCl(2). Then, body weight, liver weight coefficient, mercury (Hg) contents, histological feature, ultrastructure, apoptosis, reactive oxygen species (ROS), glutathione (GSH), glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and malondialdehyde (MDA) in the liver were measured. Lactate dehydroge... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5376800 Thu, 03 Nov 2011 04:00:00 +0100 5376800 http://www.medworm.com/index.php?rid=5294027&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%3D21053092%26dopt%3DAbstract Authors: Parvaresh H, Abedi Z, Farshchi P, Karami M, Khorasani N, Karbassi A Abstract The concentration and bioavailability of Ni, Cu, Cd, Zn, and Pb in the sediments and leaves of grey mangrove, Avicennia marina, were studied throughout Sirik Azini creek (Iran) with a view to determine heavy metals bioavailability, and two methods were used. Results show that Zn and Ni had the highest concentrations in the sediments, while Cd and Cu were found to have the lowest concentrations in the sediments. Compared to the mean concentrations of heavy metals in sedimentary rock (shales), Zn and Cu showed lower concentration, possibly indicating that the origin of these heavy metals is natural. A geo-accumulation index (I (geo)) was used to determine the degree of contamination in t... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294027 Fri, 07 Oct 2011 23:46:04 +0100 5294027 http://www.medworm.com/index.php?rid=5294026&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%3D21053093%26dopt%3DAbstract Authors: Liu C, Hong FS, Tao Y, Liu T, Xie YN, Xu JH, Li ZR Abstract The mechanism of the molecular interaction between Ce(3+), a member of rare earth elements, and Rubisco in vitro is investigated. The carboxylase activity of Rubisco greatly increased under low concentrations of Ce(3+) and decreased under high concentrations of Ce(3+). The ultraviolet absorption spectra show that the various concentrations of Ce(3+) treatment do not shift the characteristic peaks of Rubisco while the characteristic peak intensity of Rubisco increases with increasing Ce(3+) concentration. The Rubisco-Ce(3+) interactions also do not cause any noticeable change in the λmax of Rubisco fluorescence spectra. However, the fluorescence intensity of Rubisco is found quenched by the addition of Ce(3+), whi... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294026 Fri, 07 Oct 2011 23:45:54 +0100 5294026 http://www.medworm.com/index.php?rid=5294025&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%3D21053094%26dopt%3DAbstract Authors: Dos Santos Rocha PB, de Castro Amorim A, de Sousa AF, do Monte SJ, da Mata Sousa LC, do Nascimento Nogueira N, Neto JM, do Nascimento Marreiro D Abstract Research has investigated the participation of zinc transport proteins and metallothionein in the metabolism of this mineral. However, studies about the genetic expression of these proteins in obese patients are scarce. The study determined the expression of zinc transporter protein codifying genes (ZnT-1, Zip-1 and Zip-3) and of metallothionein in 55 obese women, aged between 20 and 56 years. The assessment of body composition was carried out using anthropometric measurements and bioelectrical impedance. Zinc intake was obtained by recording diet over a 3-day period, and the nutritional analysis was carried out using Nu... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294025 Fri, 07 Oct 2011 23:45:43 +0100 5294025 http://www.medworm.com/index.php?rid=5294029&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%3D21968948%26dopt%3DAbstract In conclusion, the coexistence of toxicity in Cu-Cr(III) and Cu-Cr(VI) differs from the toxicity exhibited individually by Cu, Cr(III), and Cr(VI). Heavy metal interaction also changes depending on the medium. PMID: 21968948 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294029 Tue, 04 Oct 2011 04:00:00 +0100 5294029 http://www.medworm.com/index.php?rid=5294028&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%3D21968949%26dopt%3DAbstract Authors: Jiang H, Liu F, Yang H, Li Y Abstract Limited information is available on the potential risk of degradation products of metal-on-metal bearings in joint arthroplasty. The aim of this study was to investigate the cytotoxicity and genotoxicity of orthopedic-related cobalt nanoparticles on human T cells in vitro. T cells were collected using magnetic CD3 microbeads and exposed to different concentrations of cobalt nanoparticles and cobalt chloride. Cytotoxicity was evaluated by methyl thiazolyl tetrazolium and lactate dehydrogenase release assay. Cobalt nanoparticles dissolution in culture medium was determined by inductively coupled plasma-mass spectrometry. To study the probable mechanism of cobalt nanoparticles effects on T cells, superoxide dismutase, catalase, and glutat... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294028 Tue, 04 Oct 2011 04:00:00 +0100 5294028 http://www.medworm.com/index.php?rid=5294032&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%3D21965109%26dopt%3DAbstract Authors: Karkoodi K, Chamani M, Beheshti M, Mirghaffari SS, Azarfar A Abstract The current study aimed to investigate if different sources of supplemental zinc (Zn), manganese (Mn), copper (Cu), and selenium (Se) fed to dry and lactating dairy cows affect reproductive performance, lameness status, and colostrum production. The experiment was carried out on 60 multiparous non-lactating Holstein cows in a commercial dairy herd. The cows received randomly mineral mixtures in three treatment groups containing inorganic, 25% organic-75% inorganic, or 50% organic-50% inorganic forms of Zn, Mn, Cu, and Se starting from approximately 3 weeks prior to calving up to 90 days postpartum. Supplements were included in rations and fed twice a day. Reproductive parameters including days to first... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294032 Sat, 01 Oct 2011 04:00:00 +0100 5294032 http://www.medworm.com/index.php?rid=5294031&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%3D21965110%26dopt%3DAbstract Authors: Alvi FM, Chaudhri MA, Watling J, Hasnain S PMID: 21965110 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294031 Sat, 01 Oct 2011 04:00:00 +0100 5294031 http://www.medworm.com/index.php?rid=5294030&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%3D21965111%26dopt%3DAbstract Authors: Hashmi GM, Shah MH Abstract The present study deals with the comparative evaluation of essential and toxic metals in rheumatoid arthritis and healthy donors. Blood samples collected from rheumatoid arthritis patients and healthy subjects were analysed for selected essential and toxic metals (Ca, Mg, Fe, Zn, Cu, Co, Mn, Cr, Cd and Pb). The samples were digested in nitric acid and perchloric acid mixture, followed by quantification of the metals using atomic absorption spectrometry. Mean levels of Ca, Mg, Fe and Zn were significantly higher in the blood of healthy donors; however, elevated levels of Cd, Co, Cr, Cu and Pb were observed in blood of the patients. The correlation coefficients among the selected metals in the blood of arthritis patients were significantly differe... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5294030 Sat, 01 Oct 2011 04:00:00 +0100 5294030 http://www.medworm.com/index.php?rid=5272815&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%3D21960355%26dopt%3DAbstract Authors: Cui W, Cui H, Peng X, Fang J, Zuo Z, Liu X, Wu B Abstract The purpose of this 42-day study was to investigate the apoptosis in the bursa of Fabricius induced by different levels of dietary vanadium. A total of 420 1-day-old avian broilers were divided into 6 groups in which there were 7 replicates in each group and 10 broilers in each replicate and fed on a corn-soybean basal diet as control diet (vanadium 0.073 mg/kg) or the same diet amended to contain 5, 15, 30, 45, and 60 mg/kg vanadium supplied as ammonium metavanadate (NH(4)VO(3)). Ultrastructurally, mitochondrial injury and increased numbers of apoptotic cells with condensed nuclei were observed in the 30, 45, and 60 mg/kg groups. As measured by flow cytometry, the percentages of apoptotic lymphocytes were signif... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272815 Fri, 30 Sep 2011 04:00:00 +0100 5272815 http://www.medworm.com/index.php?rid=5272816&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%3D21960354%26dopt%3DAbstract Authors: Pograjc L, Stibilj V, Falnoga I Abstract Various biomarkers were used to assess selenium (Se) status during 3 months of basic military training in a group of recruits. Samples of whole blood and plasma or serum were taken from a group of conscripts three times: at the beginning (n = 15), in the middle immediately after a severely stressful physical activity (n = 15) and at the end of military training (n = 13). Selenium was determined in diet samples, blood, plasma and plasma protein fractions as selenoprotein P (SelP) and glutathione peroxidase (eGPx). Selenium was determined by hydride generation-atomic fluorescence spectrometry and fractionation of proteins performed by affinity chromatography. Total serum glutathione, erythrocyte and serum GPx activity wer... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272816 Thu, 29 Sep 2011 04:00:00 +0100 5272816 http://www.medworm.com/index.php?rid=5272817&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%3D21952867%26dopt%3DAbstract This study investigated changes in serum zinc levels in Giardia-infected mice subjected to different dietary zinc regimens. Thirty-five mice (strain C(3)H/H(e)J) were randomly categorized into two groups. The first group was inoculated with 5 × 10(6) Giardia trophozoites (n = 18), and the second group remained Giardia free (n = 17). Each group (Giardia infected and Giardia free) was randomly classified into three subgroups and given low (9 mg Zn/kg), normal (33 mg Zn/kg), and high levels (288 mg Zn/kg) of dietary zinc over a 2-week period for acclimation. Fourteen days post-Giardia infection, all of the mice were euthanized and blood samples were collected. The number of trophozoites was quantified (hematocytometer), and serum zinc levels were determined via atomi... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272817 Wed, 28 Sep 2011 04:00:00 +0100 5272817 http://www.medworm.com/index.php?rid=5272822&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%3D21947857%26dopt%3DAbstract Authors: Zhang Z, Song X, Wang Q, Lu X Abstract Cd and Pb contents in soil, plants, and two grasshopper species (Locusta migratoria manilensis and Acrida chinensis) were examined to quantify the influence ranges of zinc smelting on heavy metal contamination. Samples were collected simultaneously from Huludao City, a chemical and nonferrous smelting base in Northeast China. Cd and Pb contamination in soil and plants were serious. Cd and Pb contents were 13.32 and 8.83 mg/kg in L. migratoria manilensis and 16.67 and 15.00 mg/kg in A. chinensis, respectively. Correlation analysis indicated the same metal source for Cd and Pb in soil, plants, and grasshoppers. Cd and Pb contents in soil, plants, and grasshoppers were all significantly related to distances far from the zinc smelter in... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272822 Tue, 27 Sep 2011 04:00:00 +0100 5272822 http://www.medworm.com/index.php?rid=5272821&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%3D21947858%26dopt%3DAbstract Authors: Gaitán DA, Flores S, Pizarro F, Olivares M, Suazo M, Arredondo M Abstract It has been suggested that calcium inhibits the absorption of dietary iron by directly affecting enterocytes. However, it is not clear if this effect is due to a decreased uptake of iron or its efflux from enterocytes. We studied the effect of calcium on the uptake, efflux, and net absorption of non-heme iron using the intestinal-like epithelial cell line Caco-2 as an in vitro model. Caco-2 cells were incubated for 60 min in a buffer supplemented with non-heme iron (as sulfate) and calcium to achieve calcium to iron molar ratios ranging from 50:1 to 1,000:1. The uptake, efflux, and net absorption of non-heme iron were calculated by following a radioisotope tracer of (55)Fe that had been added to th... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272821 Tue, 27 Sep 2011 04:00:00 +0100 5272821 http://www.medworm.com/index.php?rid=5272820&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%3D21947859%26dopt%3DAbstract Authors: Mudgal V, Garg AK, Dass RS, Varshney VP Abstract Twenty male buffalo calves (15 months, 200.2 ± 9.75) were divided into four groups of five animals in each and fed diets without (T1) or supplemented with 0.3 ppm selenium (Se) + 40 ppm zinc (Zn) (T2), 0.3 ppm Se + 40 ppm Zn + 10 ppm copper (Cu) (T3), and 40 ppm Zn + 10 ppm Cu (T4) for 120 days, during which blood samples were collected on days 0, 40, 80, and 120. Concentrations of glucose, total protein, albumin, globulin, urea, uric acid, and creatinine were similar in all the four groups. The level of different serum enzymes viz. lactate dehydrogenase, alkaline phosphatase, glutamate pyruvate transaminase, and glutamate oxaloacetate transaminase, and hormones viz. T(3), T(4), testosterone an... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272820 Tue, 27 Sep 2011 04:00:00 +0100 5272820 http://www.medworm.com/index.php?rid=5272819&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%3D21947860%26dopt%3DAbstract Authors: Andreazza R, Okeke BC, Pieniz S, Bortolon L, Lambais MR, Camargo FA Abstract Long-term copper application in vineyards and copper mining activities cause heavy metal pollution sites. Such sites need remediation to protect soil and water quality. Bioremediation of contaminated areas through bioleaching can help to remove copper ions from the contaminated soils. Thus, the aim of this work was to evaluate the effects of different treatments for copper bioleaching in two diverse copper-contaminated soils (a 40-year-old vineyard and a copper mining waste) and to evaluate the effect on microbial community by applying denaturing gradient gel electrophoresis (DGGE) of 16S ribosomal DNA amplicons and DNA sequence analysis. Several treatments with HCl, H(2)SO(4), and FeSO(4) were ev... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272819 Tue, 27 Sep 2011 04:00:00 +0100 5272819 http://www.medworm.com/index.php?rid=5272818&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%3D21947861%26dopt%3DAbstract This study indicated that DMT1 is likely involved in endosomal iron transport in placental STB and placental DMT1 + IRE expression was primarily regulated by the IRE/IRP mechanism. PMID: 21947861 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272818 Tue, 27 Sep 2011 04:00:00 +0100 5272818 http://www.medworm.com/index.php?rid=5272825&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%3D21947793%26dopt%3DAbstract Authors: Yang Y, Gao M, Nie W, Yuan J, Zhang B, Wang Z, Wu Z Abstract The purpose of this study was to investigate the effect of dietary magnesium sulfate supplementation on heat stress-induced oxidative damage in broilers. One hundred twenty 14-day-old broilers were randomly assigned into four treatment groups with three replicates of ten birds each. The broilers were reared under normal ambient temperature (24 ± 1°C) fed with a basal (control) diet or reared under high ambient temperature (35 ± 1°C between 1000 and 1800 h, 8 h each day) fed with a basal diet supplemented with magnesium sulfate (0, 2.5 or 5.0 mg/kg of diet) from 14 to 42 days of age. Growth performance and oxidative damage were evaluated in each treatment group. Our results demonstrated that dietar... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272825 Sat, 24 Sep 2011 04:00:00 +0100 5272825 http://www.medworm.com/index.php?rid=5272824&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%3D21947794%26dopt%3DAbstract Authors: Lobo JC, Aranha LN, Moraes C, Brito LC, Mafra D Abstract Anorexia is a common complication in patients with chronic kidney disease (CKD) and is associated with the development of malnutrition and an increased risk of mortality. Several compounds are linked to anorexia in these patients; however, the mechanisms are unknown. Zinc (Zn) deficiency is associated with decreased food intake and has been observed in CKD patients. In addition, leptin is an anorexigenic peptide, and patients with CKD present generally high levels of this hormone. Studies have suggested an association between Zn and leptin status in human and rats; however, the results are inconsistent. Some claimed that Zn supplementation does not change leptin release or that there is no significant relationship be... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272824 Sat, 24 Sep 2011 04:00:00 +0100 5272824 http://www.medworm.com/index.php?rid=5272823&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%3D21947795%26dopt%3DAbstract Authors: Sheng X, Zhang S, Jiang L, Li K, Gao Y, Li X Abstract Lead is a widespread pollutant and has been reported to inhibit pollen tube development, but the mechanism of toxicity involved remains unclear. Here, we report that lead stress significantly prevented Picea wilsonii pollen germination and tube growth and also dramatically altered the tube morphology in a concentration-dependent manner. Fluorescence labeling with JIM 5 (anti-acidic pectin antibody) and Calcofluor white revealed the lead-induced decline of acidic pectin and cellulose, especially in the subapical region. Decolorized aniline blue staining showed the marked accumulation of callose in the apical and subapical regions of lead-treated tubes. Fluorescence labeling with Alexa Fluor 568 phalloidin and anti-tubuli... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272823 Sat, 24 Sep 2011 04:00:00 +0100 5272823 http://www.medworm.com/index.php?rid=5272826&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%3D21938504%26dopt%3DAbstract "Free" Copper: A New Endogenous Chemical Mediator of Inflammation in Birds. Biol Trace Elem Res. 2011 Sep 22; Authors: Singh KK, Kumar M, Kumar P, Gupta MK, Jha DK, Kumari S, Roy BK, Kumar S Abstract For acceptance of any chemical agent as an endogenous chemical mediator of inflammation, the agent in question must fulfill some biological requirements which are (a) it should be ubiquitously present in tissues in inactive form, (b) it should be activated during process of inflammation whose increase should be identifiable, (c) it should induce or amplify some events of inflammation, (d) there must be some natural inhibitor of such active form in tissues, (e) it should be able to induce inflammatory reaction after exogenous injection, (f) such reaction should be inhibited by e... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5272826 Thu, 22 Sep 2011 04:00:00 +0100 5272826 http://www.medworm.com/index.php?rid=5240779&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%3D21935652%26dopt%3DAbstract Authors: Shi D, Guo S, Liao S, Su R, Pan J, Lin Y, Tang Z Abstract The aim of the study was to investigate the effect of selenium on hepatic mitochondrial antioxidant capacity in ducklings administrated with aflatoxin B(1) (AFB(1)). Ninety 7-day-old ducklings were randomly divided into three groups (groups I-III). Group I was used as a blank control. Group II was administered with AFB(1) (0.1 mg/kg body weight). Group III was administered with AFB(1) (0.1 mg/kg body weight) plus selenium (sodium selenite, 1 mg/kg body weight). All treatments were given once daily for 21 days. The results showed that the activities of mitochondrial superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and glutathione reductase (GR) in group II ducklings significantly decre... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5240779 Wed, 21 Sep 2011 04:00:00 +0100 5240779 http://www.medworm.com/index.php?rid=5240783&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%3D21932043%26dopt%3DAbstract Authors: Kong T, Li XB, Liu GW, Xie GH, Wang Z, Zhang ZG, Zhang Y, Sun J, Tang J Abstract Copper ions are too small to elicit an immune response. Therefore, copper was conjugated to carrier proteins using S-2-(4-isothiocyanatobenzyl)-1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid, a bifunctional chelator, to make artificial antigens for copper. Several mice were immunized, and monoclonal antibodies (MAbs) against chelated copper were produced. Spleen cells of immunized mice were fused with myeloma cells. The resulting hybridomas were screened using protein conjugates which were covalently bound to metal-free 1, 4, 7, 10-tetraazacyclododecane-1, 4, 7, 10-tetraacetic acid (DOTA) or Cu-DOTA. Two hybridoma cell lines (F4 and B2) that produced MAbs with high selectivity ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5240783 Tue, 20 Sep 2011 04:00:00 +0100 5240783 http://www.medworm.com/index.php?rid=5240782&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%3D21932044%26dopt%3DAbstract This study was aimed at evaluating the effect of Se source (inorganic or organic yeast derived) on testes weight, Se content, and gene expression. At 17 weeks of age, roosters were randomly assigned to one of three treatments: basal diet (control), basal diet + 0.3 mg organic Se/kg organic yeast-derived Se (YS; Sel-Plex®, Alltech Inc.), or basal diet + 0.3 mg inorganic Se /kg inorganic Se as sodium selenite (SS). At 40 weeks of age, seven roosters from each treatment were euthanized and testes removed. Testes weight did not differ between treatments, but Se content was greater (P ≤ 0.01) in YS than SS and control. Testicular differential gene expression profiling was accomplished using the Affymetrix Genechip® chicken genome array. Ingenuity® pathway analysis revealed ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5240782 Tue, 20 Sep 2011 04:00:00 +0100 5240782 http://www.medworm.com/index.php?rid=5240781&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%3D21932045%26dopt%3DAbstract This study was conducted on 402 participants with a mean age of 32.54 ± 6.22 years, including 173 (43%) women and 229 (57%) men. In this study, we found an inverse relationship between dietary intake of zinc and depression. The results persisted even after we controlled for several potential confounding variables related to depression symptoms, including age, sex, years of education, smoking status (current and past), and physical activity. The results of this study show that long-term intake of zinc may modulate symptoms of depression. PMID: 21932045 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5240781 Tue, 20 Sep 2011 04:00:00 +0100 5240781 http://www.medworm.com/index.php?rid=5240780&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%3D21932046%26dopt%3DAbstract Authors: Wang N, She Y, Zhu Y, Zhao H, Shao B, Sun H, Hu C, Li Y Abstract The aim of this study was to investigate the effects of aluminum (Al) exposure on the reproductive function in female rats. Forty female Wistar (5 weeks old) rats, weighing 110-120 g, were divided randomly into four groups. They were orally administrated with 0, 64.18, 128.36, and 256.72 mg aluminum chloride (AlCl(3)) per kilogram body weight in drinking water for 120 days. Levels of Al, estrogen (E(2)), progestogen (P), testosterone (T), follicle-stimulating hormone (FSH), and luteinizing hormone (LH) in serum were measured at the end of experiment. The results showed that levels of E(2), P, FSH, and LH were significantly lower and Al concentration was significantly higher in all three Al-treated groups ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5240780 Tue, 20 Sep 2011 04:00:00 +0100 5240780 http://www.medworm.com/index.php?rid=5225708&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%3D21915762%26dopt%3DAbstract Authors: Miyazaki T, Takenaka T, Inoue T, Sato M, Miyajima Y, Nodera M, Hanyu M, Ohno Y, Shibazaki S, Suzuki H Abstract Zinc deficiency leads to decreased cellular immune responses. The overproduction of nitrogen species derived from inducible nitric oxide synthase (iNOS), its enzyme, and interleukine-1 beta (IL-1β), and inflammatory cytokine have been implicated in immune responses. The goal of this study was to investigate the effects of lipopolysaccharide (LPS)-induced changes in NO metabolites, iNOS, and IL-1β protein expression in the lungs of zinc-deficient rats. Male Sprague-Dawley rats (body weight, 100 g) were divided into two groups and were fed either a zinc-deficient diet (ZnD) or a zinc-containing diet (Cont). After 4 weeks on these diets, rats received a 10-mg/kg ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5225708 Wed, 14 Sep 2011 04:00:00 +0100 5225708 http://www.medworm.com/index.php?rid=5225709&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%3D21912962%26dopt%3DAbstract In conclusion, organic mineral supplementation in breeders' diets protected breeders from lipid peroxidation, increased egg nutrition retention, and benefit for growth of broilers. PMID: 21912962 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5225709 Tue, 13 Sep 2011 04:00:00 +0100 5225709 http://www.medworm.com/index.php?rid=5215610&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%3D21909799%26dopt%3DAbstract Authors: Shi D, Guo S, Liao S, Su R, Guo M, Liu N, Li P, Tang Z Abstract To investigate the protection of selenium on hepatic mitochondrial functions, 90 7-day-old ducklings were randomly divided into three groups (groups I-III). Group I was used as a blank control. Group II was administered with aflatoxin B(1) (0.1 mg/kg body weight). Group III was administered with aflatoxin B(1) (0.1 mg/kg body weight) plus selenium (sodium selenite, 1 mg/kg body weight). All treatments were given once daily for 21 days. The results showed that the activities of hepatic mitochondrial complexes I-IV in group II ducklings significantly decreased when compared with group I (P < 0.01). Furthermore, the activities of hepatic mitochondrial complexes I-IV in group III significantly increased... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215610 Sat, 10 Sep 2011 04:00:00 +0100 5215610 http://www.medworm.com/index.php?rid=5215612&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%3D21901433%26dopt%3DAbstract Authors: Cheng J, Li N, Cai J, Cheng Z, Hu R, Zhang Q, Wan F, Sun Q, Gui S, Sang X, Wang L, Hong F Abstract Due to increasing applications of lanthanides (Ln) in industry and daily life, numerous studies confirmed that Ln exposure may result in organ damages in mice and rats, while very few studies focused on several organs damages simultaneously. In order to compare the toxicity of Ln on organs, mice were exposed to LaCl(3), CeCl(3), and NdCl(3) of a dose of 20 mg/kg body weight for consecutive 60 days, respectively, then histopathological changes of liver, kidney, and heart, and their function were investigated. The results showed that long-term exposure to Ln caused cell necrosis and basophilia of liver, ambiguity of renal tubule architecture, congestion of blood vessel and ca... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215612 Thu, 08 Sep 2011 04:00:00 +0100 5215612 http://www.medworm.com/index.php?rid=5215611&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%3D21901434%26dopt%3DAbstract Authors: Frank MK, Esteves AM, Lopes C, Cavagnolli DA, Tufik S, de Mello MT Abstract The purpose of this study was to evaluate the profile of serum iron in spontaneously hypertensive rats after an aerobic physical exercise. To accomplish this, 12 normotensive Wistar rats and 12 spontaneously hypertensive rats were distributed into "physical exercise" and "no physical exercise" groups. The animals in the physical exercise group underwent to an aerobic exercise for a total of 4 weeks. Blood was collected for the analysis of iron. Our results indicate that rats of the physical exercise group had significantly lower serum iron levels after the aerobic exercise protocol compared to the spontaneously hypertensive rats no physical exercise group (F ((3,16)) = 4.4915, p < 0.01)... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215611 Thu, 08 Sep 2011 04:00:00 +0100 5215611 http://www.medworm.com/index.php?rid=5215613&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%3D21901432%26dopt%3DAbstract In conclusion, curcumin treatment at the doses of 10 and 20 mg/kg (intraperitoneally) showed significant nephroprotective effects. PMID: 21901432 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215613 Wed, 07 Sep 2011 04:00:00 +0100 5215613 http://www.medworm.com/index.php?rid=5215615&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%3D21898106%26dopt%3DAbstract Authors: Xiao XY, Yang M, Guo ZH, Luo YP, Bi JP Abstract Greenhouse experiments were conducted to study the permissible value of vanadium (V) based on the growth and physiological responses of green Chinese cabbage (Brassica chinensis L.), and effects of V on microbial biomass carbon (MBC) and enzyme activities in allitic udic ferrisols were also studied. The results showed that biomass of cabbage grown on soil treated with 133 mg V kg(-1) significantly decreased by 25.1% compared with the control (P < 0.05). Vanadium concentrations in leaves and roots increased with increasing soil V concentration. Contents of vitamin C (Vc) increased by 10.3%, while that of soluble sugar in leaves significantly decreased by 54.0% when soil V concentration was 133 mg kg(-1), respectiv... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215615 Tue, 06 Sep 2011 04:00:00 +0100 5215615 http://www.medworm.com/index.php?rid=5215614&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%3D21898107%26dopt%3DAbstract Authors: Rauf N, Tahir SS, Dilawar S, Ahmad I, Parvez S Abstract High rates of hepatitis B and C are present in Pakistan. Epidemiological surveys demonstrated an inverse association between selenium (Se) level and regional cancer incidence, as well as viral infection. In this cross-sectional descriptive analytical study, serum selenium concentration of 150 patients suffering from hepatitis B and C patients, along with 26 healthy controls, was determined by atomic absorption spectrophotometer equipped with hydride generation system. The mean and standard deviation of serum selenium concentration observed in male and female patients with hepatitis C were 101.60 ± 0.55 and 77.43 ± 0.47 μg/l, respectively, while the mean and standard deviation of serum selenium concentratio... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215614 Tue, 06 Sep 2011 04:00:00 +0100 5215614 http://www.medworm.com/index.php?rid=5215619&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%3D21892592%26dopt%3DAbstract Authors: Murota K, Yoshida M, Ishibashi N, Yamazaki H, Minami T Abstract Methyl mercury is contained in fish and seafood products and is taken up into the body in food. While the central nervous system is known as a target organ, methyl mercury also induces autoimmunity and acts as a potent immunosuppressor. The aim of the present study is to know whether methyl mercury is directly absorbed by lymph. Conscious rats were infused with methyl mercury (4 mg/kg) via duodenal tubing as a single pulse infusion, followed by the continuous infusion of saline, and lymphatic fluids were continuously collected from the thoracic lymph duct every 30 min until 360 min after infusion. Mercury was detected immediately after infusion, and total mercury contents in lymph gradually increased until ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215619 Sat, 03 Sep 2011 04:00:00 +0100 5215619 http://www.medworm.com/index.php?rid=5215618&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%3D21892593%26dopt%3DAbstract Authors: Tohno Y, Tohno S, Mahakkanukrauh P, Minami T, Sinthubua A, Suwannahoy P, Khanpetch P, Azuma C Abstract To clarify the manner of accumulation of Ca and P in the coronary arteries, the authors divided the coronary arteries into many segments based on arterial ramification and investigated the element contents of the segments by direct chemical analysis. After ordinary dissection at Chiang Mai University was finished, the left coronary (LC) and the right coronary (RC) arteries were removed successively from the hearts of Thai subjects. The Thai subjects consisted of seven men and five women, ranging in age from 42 to 87 years (average age = 73.9 ± 13.5 years). The LC and the RC arteries were divided into 19 segments based on arterial ramification. After incineratio... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215618 Sat, 03 Sep 2011 04:00:00 +0100 5215618 http://www.medworm.com/index.php?rid=5215617&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%3D21892721%26dopt%3DAbstract In conclusion, documented anthropometric predictors affect the significance of ferritin as a potential prediction variable for insulin resistance. Mechanisms of how body fat could influence ferritin levels should be evaluated. To our knowledge, this is the first evaluation of the relationship between body iron stores and insulin resistance in a Latin American population. PMID: 21892721 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215617 Sat, 03 Sep 2011 04:00:00 +0100 5215617 http://www.medworm.com/index.php?rid=5215616&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%3D21892722%26dopt%3DAbstract In this study, we determined the concentrations of total mercury (Hg) in samples of liver, kidney and skeletal muscle of 27 red foxes Vulpes vulpes (L., 1758) from north-western Poland, and examined the morphometric characteristics of the collected specimens. The analysis also included the relationship between Hg concentration and the fox size, and the suitability of individual organs as bioindicators in indirect evaluation of environmental mercury contamination. Determination of Hg concentration was performed by atomic absorption spectroscopy. In the analysed samples, the Hg concentration was low and the maximum value did not exceed 0.85 mgHg/kg dry weight (dw). There were no significant differences in Hg concentrations in the analysed material between males and females or between immatu... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5215616 Sat, 03 Sep 2011 04:00:00 +0100 5215616 http://www.medworm.com/index.php?rid=5188746&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%3D21882065%26dopt%3DAbstract Authors: Han XY, Du WL, Huang QC, Xu ZR, Wang YZ Abstract The experiment was conducted to evaluate the effect of copper-loaded chitosan nanoparticles on the small intestinal morphology and activities of digestive enzyme and mucosal disaccharase in rats. Forty male Sprague-Dawley rats, with average body weight of 82 g, were randomly allotted to five groups (n = 8). All rats were received a basal diet (control) or the same basal diet added with 80 mg/kg BW CuSO(4), 80 mg/kg BW chitosan (CS-I), 80 mg/kg BW copper-loaded chitosan nanoparticles (CSN-I), 160 mg/kg BW copper-loaded chitosan nanoparticles (CSN-II), respectively. The experiment lasted 21 days. The results showed that the villus heights of the small intestinal mucosa in groups CSN-I and CSN-II were higher than thos... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5188746 Wed, 31 Aug 2011 23:00:00 +0100 5188746 http://www.medworm.com/index.php?rid=5188745&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%3D21882066%26dopt%3DAbstract Authors: Li Y, Zou X, Lv J, Yang L, Li H, Wang W Abstract Trace element concentrations in body tissues of healthy centenarians have not been widely analyzed, yet they can be used as reference data leading to improved assessment of the aging process and monitoring of the micronutrient status of this age group. The present study sought to assess trace element concentrations and behaviors in the fingernails of healthy Chinese centenarians. The effects of gender on element concentrations, which also play an important role in determining the lifespan, were also investigated. Trace elements (Ba, Cd, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Pb, Se, Sr, and Zn) in the fingernails of 78 healthy Chinese centenarians were determined by inductively coupled plasma mass spectrometry. The overall referenc... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5188745 Wed, 31 Aug 2011 23:00:00 +0100 5188745 http://www.medworm.com/index.php?rid=5188744&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%3D21882067%26dopt%3DAbstract Authors: Zalejska-Fiolka J, Wielkoszyński T, Kasperczyk S, Kasperczyk A, Birkner E Abstract The effects of administration of oxidized rapeseed oil and α-lipoic acid on activities of blood antioxidant enzymes and malondialdehyde (MDA) concentration were studied in laboratory rats fed a high-fat diet. Addition of oxidized oil resulted in increased production of oxygen radicals, evidenced by elevated plasma MDA production. Such effect was counteracted by administration of α-lipoic acid. There was an increase of the activities of superoxide dismutase (total and Cu/Zn-SOD) and catalase in rats fed a high-fat diet to which 10% oxidized oil was added. Administration of α-lipoic acid resulted in a decrease of the activities of these enzymes. PMID: 21882067 [PubMed - as supplied by ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5188744 Wed, 31 Aug 2011 23:00:00 +0100 5188744 http://www.medworm.com/index.php?rid=5188743&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%3D21882068%26dopt%3DAbstract Authors: Liu J, Cui H, Liu X, Peng X, Deng J, Zuo Z, Cui W, Deng Y, Wang K Abstract The purpose of this study was to investigate the renal and hepatic oxidative damage and toxicity caused by dietary high vanadium in broilers. A total of 420 one-day-old avian broilers were divided into six groups and fed on a corn-soybean basal diet as control diet (vanadium 0.073 mg/kg), and five high vanadium diets (vanadium 5 mg/kg, high vanadium group I; 15 mg/kg, high vanadium group II; 30 mg/kg, high vanadium group III; 45 mg/kg, high vanadium group IV; and 60 mg/kg, high vanadium group V) throughout the experimental period of 42 days. The results showed that the renal and hepatic superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities, ability to inhibit hydroxy radic... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5188743 Wed, 31 Aug 2011 23:00:00 +0100 5188743 http://www.medworm.com/index.php?rid=5188742&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%3D21882069%26dopt%3DAbstract In conclusion, result of the study has shown a negative association between pulmonary functions disorders and radiological abnormalities and serum Cu levels in CMWs. PMID: 21882069 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5188742 Wed, 31 Aug 2011 23:00:00 +0100 5188742 http://www.medworm.com/index.php?rid=5188741&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%3D21882070%26dopt%3DAbstract In conclusion, while insoluble Gd(3+) salts are capable of stimulating fibroblast proliferation, one should be cautious in assuming that GBCA dechelation must occur in vivo to produce the profibrotic changes seen in association with GBCA exposure in the subset of renal failure patients that develop nephrogenic systemic fibrosis. PMID: 21882070 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5188741 Wed, 31 Aug 2011 23:00:00 +0100 5188741 http://www.medworm.com/index.php?rid=5171218&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%3D21870151%26dopt%3DAbstract Authors: Suzuki K, Higuchi H, Iwano H, Lakritz J, Sera K, Koiwa M, Taguchi K Abstract The aim of this study was to evaluate the reliability and effectiveness of direct determination of trace and major element concentrations in bronchoalveolar lavage fluid samples from Holstein calves with Mycoplasma bronchopneumonia (n = 21) and healthy controls (n = 20). The samples were obtained during bronchoscopy using a standard examination method. A total of 18 elements (aluminum, bromine, calcium, chlorine, chromium, copper, iron, potassium, magnesium, manganese, molybdenum, nickel, phosphorous, sulfur, silicon, strontium, titanium, and zinc) were detected by particle-induced X-ray emission. The average bromine, iron, potassium, magnesium, and phosphorous concentrations were higher i... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171218 Thu, 25 Aug 2011 23:00:00 +0100 5171218 http://www.medworm.com/index.php?rid=5171217&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%3D21870152%26dopt%3DAbstract In conclusion, MMF treatment was found to affect plasma Fe, Zn, and Cu levels by increasing their concentrations while decreasing the plasma Na concentration. Mg and Zn deficiencies, as well as excessive Fe levels, are frequently observed irrespective of the immunosuppressive regimen applied, which suggests that monitoring of these bioelements may be favorable. PMID: 21870152 [PubMed - as supplied by publisher] (Source: Biological Trace Element Research) Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171217 Thu, 25 Aug 2011 23:00:00 +0100 5171217 http://www.medworm.com/index.php?rid=5171216&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%3D21870153%26dopt%3DAbstract Authors: Wang Y, Ou YL, Liu YQ, Xie Q, Liu QF, Wu Q, Fan TQ, Yan LL, Wang JY Abstract In order to explore the associations between trace elements in dietary intake and the other three biological media (blood, urine, or feces) and inter-element interactions among the latter, we simultaneously collected 72-h diet duplicates, whole blood, and 72-h urine and feces from 120 free-living healthy males in China. Correlations among the toxic (cadmium [Cd], lead [Pb]), and nutritionally essential (zinc [Zn], copper [Cu], iron [Fe], manganese [Mn], selenium [Se], iodine [I]) elements were evaluated using Spearman rank correlation analysis based on analytical data determined by inductively coupled plasma-mass spectrometry. Dietary Cd intakes were highly correlated with the fecal Cd and blood C... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171216 Thu, 25 Aug 2011 23:00:00 +0100 5171216 http://www.medworm.com/index.php?rid=5171215&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%3D21870154%26dopt%3DAbstract In this study, the modulator effect of caffeic acid phenethyl ester (CAPE) on the oxidative nephrotoxicity of gentamicin in the kidneys of rats was investigated by determining indices of lipid peroxidation and the activities of antioxidant enzymes as well as by histological analyses. Forty female Wistar albino rats were randomly divided into four groups, namely control, gentamicin, CAPE, and gentamicin plus CAPE. On the 12th day of the study, all rats were sacrificed and then blood samples and kidneys were taken. Lipid peroxidation and nitric oxide levels, glutathione peroxidase (GSH-Px), superoxide dismutase (SOD) and catalase (CAT) enzyme activities, and histological evaluation were measured in kidneys of rats. Levels of blood urea nitrogen and creatinine were studied in serum. CAPE with... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171215 Thu, 25 Aug 2011 23:00:00 +0100 5171215 http://www.medworm.com/index.php?rid=5171220&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%3D21863323%26dopt%3DAbstract Authors: Gao X, Xing H, Li S, Li J, Ying T, Xu S Abstract Selenoprotein W (SelW) is an existing form of selenium (Se). Se influences the levels of SelW in mammals. However, little is known about the pattern of SelW expression in the gastrointestinal tract tissue of bird. The present paper describes the effects of different dietary levels of Se on the SelW mRNA expression in the gastrointestinal tract tissue of chicken. The expression levels of SelW mRNA and the Se contents in the gastrointestinal tract tissues (glandular stomach, gizzard, duodenum, small intestine, and rectum) were determined on days 15, 25, 35, 45, and 55, respectively. The results showed that the Se contents and the SelW mRNA expression were significantly higher (p < 0.05) in the high-Se group, and the Se ... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171220 Tue, 23 Aug 2011 23:00:00 +0100 5171220 http://www.medworm.com/index.php?rid=5171219&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%3D21863324%26dopt%3DAbstract Authors: Gammelgaard B, Rasmussen LH, Gabel-Jensen C, Steffansen B Abstract The aim of the present work was to compare and estimate absorption and biotransformation of selected selenium compounds by studying their fluxes across Caco-2 cells. Five different selenium compounds, selenomethionine (SeMet), Se-methylselenocysteine (MeSeCys), selenate, selenite, and methylseleninic acid (MeSeA), were applied to Caco-2 cells in a concentration of 10 μM, and fluxes in both directions were studied for 2 h. Fluxes of selenite and MeSeA in the presence of excess reduced glutathione (selenite + GSH and MeSeA + GSH) and flux of MeSeA in the presence of excess cysteine (MeSeA + Cys) were also studied. Selenium absorptive and exsorptive fluxes and accumulation in cell cytosol were a... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171219 Tue, 23 Aug 2011 23:00:00 +0100 5171219 http://www.medworm.com/index.php?rid=5171223&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%3D21861130%26dopt%3DAbstract Authors: Lin J, Fu C, Zhang X, Xie K, Yu Z Abstract The distribution, potential ecological hazards, and homologous relativity of heavy metals in the water-level fluctuating zone (WLFZ) of the Yangtze River within the Wanzhou Section (YRWS) were investigated. The heavy metal content (Cd, Cu, Cr, and Ni) of the surface soil was analysed via atomic absorption spectroscopy. The potential ecological hazards of the heavy metals in the WLFZ soil of YRWS were also evaluated using the classical Lars Hakanson potential ecological risk index method, and the relevance of the heavy metals in the soil was investigated. The average Cd, Cr, Cu, and Ni concentrations were 2.14, 35.43, 18.47, and 34.52 mg/kg, respectively. The Cd and Ni contents in the soil exceeded the reference values in China by... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171223 Mon, 22 Aug 2011 23:00:00 +0100 5171223 http://www.medworm.com/index.php?rid=5171222&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%3D21861131%26dopt%3DAbstract Authors: Maharajan A, Rajalakshmi S, Vijayakumaran M, Kumarasamy P Abstract The tissue damage induced by various organic pollutants in aquatic animals is well documented, but there is a dearth of information relating to the histological alterations induced by copper in the spiny lobster. In the present study, intermoult juveniles of the spiny lobster Panulirus homarus (average weight 150-200 g) were exposed to two sublethal concentrations of the copper (9.55 and 19.1 μg/l) for a period of 28 days. The muscle, hepatopancreas, midgut, gills, thoracic ganglion and heart of the lobsters were then dissected out and processed for light microscopic studies. Exposure to copper was found to result in several alterations in the histoarchitecture of the muscle, hepatopancreas, midgut, gil... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171222 Mon, 22 Aug 2011 23:00:00 +0100 5171222 http://www.medworm.com/index.php?rid=5171221&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%3D21861132%26dopt%3DAbstract Authors: Sen I, Alli H, Cöl B Abstract The aim of the study was to determine the boron contents of some wild-growing mushrooms collected from the vicinity of several boron mines located in Balikesir, Turkey and compare the boron contents of some mushroom and soil samples. The locations of the mushroom samples collected were within the distance of 0-100, 100-500, and 500-1,000 m to the mines. Soil samples were taken from beneath randomly selected fungal fruit bodies. A total of 40 mushroom samples were found in the study area and 37 different species were identified. Among the 40 samples analyzed, the highest boron content was detected to be 273 mg kg(-1) in Suillus collinitus. Also, Tricholoma terreum (69.52 mg kg(-1)), Myxomphalia maura (36.52 mg kg(-1)), Otidea concinna (... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171221 Mon, 22 Aug 2011 23:00:00 +0100 5171221 http://www.medworm.com/index.php?rid=5171224&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%3D21858410%26dopt%3DAbstract In this study, a solid-phase extraction method combined with atomic absorption spectrometry for extraction, preconcentration, and determination of iron (Fe(3+)), copper (Cu(2+)), and lead (Pb(2+)) ions at trace levels in water samples has been reported. The influences of effective parameters such as flow rate, pH, eluent conditions (type, volume, and concentration), sample volumes, and interference of matrix ions on metal ions recoveries were studied. Under optimized conditions, the limits of detection were found in the range of 0.7-2.2 μg L(-1), while preconcentration factors for Fe(3+), Cu(2+), and Pb(2+) ions were found to be 166, 200, and 250, respectively, and loading half time (t (1/2)) values were less than 2 min for all analyte ions. The proposed procedure was applied for the d... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5171224 Fri, 19 Aug 2011 23:00:00 +0100 5171224 http://www.medworm.com/index.php?rid=5138824&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%3D21845455%26dopt%3DAbstract Authors: Khajeh M An online column pre-concentration technique, coupled with flame atomic absorption spectrometry, was developed using a column filled with nanoclay modified with morin. For this purpose, zinc was determined in the water and biological samples. The sample solution was passed through the modified nanoclay column. The adsorbed zinc was subsequently eluted from the column with nitric acid solution. The optimization step was performed using two-level fractional factorial (2(5-2)) and Box-Behnken designs. Firstly, the fractional factorial design was performed for preliminary evaluation of the significant factors. The results showed that pH, amount of morin, and concentration of eluent were significant. The Box-Behnken experimental design was carried out in order to determine... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5138824 Mon, 15 Aug 2011 23:00:00 +0100 5138824 http://www.medworm.com/index.php?rid=5138865&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%3D21842278%26dopt%3DAbstract Authors: Yu Y, Fan D The calcium complex of human-like collagen (HLC) was generated in aqueous solution, purified by dialysis or ultrafiltration, and isolated by freeze-drying. Evidence for interactions between HLC and calcium(II) was obtained through measurements of the complex's fluorescence and UV-visible spectra, the interpretation of its Fourier transform infrared spectroscopy and circular dichroism spectra, thermogravimetric (TG) analysis, and differential scanning calorimetry (DSC). The HLC-Ca complex is considered a new chemical compound in which HLC retains its helical structure and the calcium ion is linked to the protein via C=O and N-H groups. Additionally, TG and DSC measurements indicate that the HLC-Ca complex is thermodynamically more stable than free HLC. The results o... Biological Trace Element Research journals http://www.medworm.com/rss/comments.php?id=5138865 Fri, 12 Aug 2011 23:00:00 +0100 5138865