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Total 23547 results found since Jan 2013.

Spontaneous HIV expression during suppressive ART is associated with the magnitude and function of HIV-specific CD4 + and CD8 + T cells
Cell Host Microbe. 2023 Sep 13;31(9):1507-1522.e5. doi: 10.1016/j.chom.2023.08.006.ABSTRACTSpontaneous transcription and translation of HIV can persist during suppressive antiretroviral therapy (ART). The quantity, phenotype, and biological relevance of this spontaneously "active" reservoir remain unclear. Using multiplexed single-cell RNAflow-fluorescence in situ hybridization (FISH), we detect active HIV transcription in 14/18 people with HIV on suppressive ART, with a median of 28/million CD4+ T cells. While these cells predominantly exhibit abortive transcription, p24-expressing cells are evident in 39% of participants...
Source: Cell Host and Microbe - September 14, 2023 Category: Microbiology Authors: Mathieu Dub é Olivier Tastet Caroline Dufour G érémy Sannier Nathalie Brassard Gloria-Gabrielle Delgado Am élie Pagliuzza Corentin Richard Manon Nayrac Jean-Pierre Routy Alexandre Prat Jacob D Estes R émi Fromentin Nicolas Chomont Daniel E Kaufmann Source Type: research

Can the Herbicide Dicamba Produce Oxidative Stress in the Native South American fish Jenynsia lineata at Environmentally Relevant Concentrations?
Bull Environ Contam Toxicol. 2023 Sep 14;111(3):41. doi: 10.1007/s00128-023-03796-4.ABSTRACTDicamba (DIC) is one of the most applied auxin herbicides worldwide. Sublethal effects in the South American native fish Jenynsia lineata exposed to DIC concentrations close to environmental concentrations (0.03-30 µg/L) during 48 h were analysed thorough the evaluation of catalase (CAT), glutathione S-transferase (GST), superoxide dismutase (SOD) activities and malondialdehyde (MDA) and H2O2 levels for detecting potential oxidative stress. In gills MDA increased showing oxidative damage probably because of an inefficient antioxida...
Source: Bulletin of Environmental Contamination and Toxicology - September 14, 2023 Category: Environmental Health Authors: Diana M Villagran Lucas R Lombardero Andrea C Crupkin Julieta R Mendieta Sandra K Medici Francisco Lavarello M Fernanda Simoniello Mirta L Menone Source Type: research

Assignment of product ions produced from ciguatoxin-3C provides a deep insight into the fragmentation mechanism of polycyclic ether compounds
CONCLUSIONS: Three alternative charge sites produce a hybrid spectrum. The simultaneous fission of three bonds was explained. For the first time, intense ions due to serial dehydration were explained by the elimination of ether oxygen atoms and the subsequent conjugation of double bonds. All product ions were considered by the structural features of polycyclic ether that facilitates the formation of conjugated polyenes.PMID:37706432 | DOI:10.1002/rcm.9628
Source: Rapid Communications in Mass Spectrometry : RCM - September 14, 2023 Category: Chemistry Authors: Ryogo Ukai Hideaki Uchida Kouichi Sugaya Jun-Ichi Onose Takeshi Yasumoto Naoki Abe Source Type: research

Circular economy approaches for the production of high-value polysaccharides from microalgal biomass grown on industrial fish processing wastewater: A review
Int J Biol Macromol. 2023 Sep 12:126887. doi: 10.1016/j.ijbiomac.2023.126887. Online ahead of print.ABSTRACTThe discharge of high-strength wastewater from the fish-processing industries, comprising undefined blends of toxic and organic compounds, has always been a subject of great disquiet worldwide. Despite a large number of effluent treatment methodologies known to date, biosorption with the aid of naturally grown microalgae has been recognized recently to possess promising outcomes in eradicating pollutants comprising organic compounds from liquid effluents. Interestingly, the microalgal biomass harvested from phytoreme...
Source: International Journal of Biological Macromolecules - September 14, 2023 Category: Biochemistry Authors: E J Rifna Gaurav Rajauria Madhuresh Dwivedi Brijesh K Tiwari Source Type: research

Dietary Effects of Selenium Nanoparticles on Growth Performance, Survival Rate, Chemical Composition, and Muscle Bioaccumulation of Nile Tilapia (Oreochromis niloticus)
This study evaluated the effect of selenium nanoparticles on growth performance, survival rate, chemical composition, and bioaccumulation of selenium in the muscle of Nile tilapia (Oreochromis niloticus). Fish with an average weight of 33.1 ± 1.0 g were distributed in 12 fiberglass tanks and fed for 56 days with different levels of selenium nanoparticles, 0, 0.5, 1, and 2 mg/kg of diet, considered as control, T1, T2, and T3, respectively. Body weight increase (BWI), specific growth rate (SGR), and food conversion ratio (FCR) were significantly influenced by 2 mg/kg of selenium nanoparticles compared to the other treatment...
Source: Biological Trace Element Research - September 14, 2023 Category: Biology Authors: Shervin Sheikh Fariborz Ghojaghi Afshin Ghelichi Sarah Jorjani Source Type: research

Comparative assessment of Chinese mitten crab aquaculture in China: Spatiotemporal changes and trade-offs
This study aims to address this gap by examining the spatio-temporal evolution of crab aquaculture in China since the 2000s and evaluating the environmental and economic characteristics along its life-cycle stages: megalopa, juvenile crab, and adult crab cultivation. The geostatistical analysis shows a more dispersed pattern of crab aquaculture nationally as crab grows, with coastal provinces that have brackish water for megalopa cultivation but wider spatial coverage for juvenile and adult crab cultivation. Our findings reveal that the production of 1 ton of live-weight crab results in 7.65 ton of CO2 equivalent of greenh...
Source: Environmental Pollution - September 14, 2023 Category: Environmental Health Authors: Xin Liu Huijun Wu Yuan Wang Yajie Liu Hui Zhu Zeru Li Pengguang Shan Zengwei Yuan Source Type: research

On ability of perch to colonize new waterbodies - indirect evidence and sticky facts. A Comment on: 'Multiple lines and levels of evidence for avian zoochory promoting fish colonization of artificial lakes' (2023), by Garcia et al 
Biol Lett. 2023 Sep;19(9):20230233. doi: 10.1098/rsbl.2023.0233. Epub 2023 Sep 13.NO ABSTRACTPMID:37700702 | DOI:10.1098/rsbl.2023.0233
Source: Biology Letters - September 13, 2023 Category: Biology Authors: Anti Vasem ägi Magnus Huss Anna G årdmark Mikhail Ozerov Source Type: research

Usage and coordination of governance principles to address proximate and distal drivers of conflicts in fisheries commons
This article is protected by copyright. All rights reserved.PMID:37700665 | DOI:10.1111/cobi.14178
Source: Conservation Biology - September 13, 2023 Category: Biology Authors: T R McClanahan Source Type: research

Impact on species' online attention when named after celebrities
This article is protected by copyright. All rights reserved.PMID:37700661 | DOI:10.1111/cobi.14184
Source: Conservation Biology - September 13, 2023 Category: Biology Authors: Katie Blake Sean Anderson Adam Gleave Diogo Ver íssimo Source Type: research

Assessment of Potentially Toxic Metals in Fish from Lake Manyara, Northern Tanzania
Bull Environ Contam Toxicol. 2023 Sep 13;111(3):39. doi: 10.1007/s00128-023-03794-6.ABSTRACTElemental tracer concentrations of copper, lead, nickel and zinc, were assessed in the muscles of Oreochromis amphimelas and Clarias gariepinus from Lake Manyara, Tanzania, to evaluate their safety to consumers, specifically humans. Results revealed that no elemental concentrations exceeded the FAO permissible levels, indicating fish from all sites are safe for human consumption. However, based on the highest found concentration of Pb, we recommend a maximum consumption of 2.2 kg of fish from Lake Manyara per week. No significant di...
Source: Bulletin of Environmental Contamination and Toxicology - September 13, 2023 Category: Environmental Health Authors: Shovi Sawe Aloyce Amasi Maarten Wynants Source Type: research

The Presence of Microplastics in the Gills and Gastrointestinal Tract of Mackerel (Rastrelliger Kanagurta Cuvier, 1816) from Jakarta Bay, Indonesia
This study examined the characteristics of microplastics (MPs) in the gills and gastrointestinal tract (GIT) of mackerel (Rastrelliger kanagurta) captured in Jakarta Bay, Indonesia. All 120 fish contained MPs, with fragment > fiber > film being the most prevalent types, in that order. The total abundances of fragments, fibers, and films in the gills were as follows: 4.8 ± 1.6, 1.0 ± 0.7, and 0.3 ± 0.3, respectively. The total abundances of fragments, fibers, and films in the GIT were 5.9 ± 2.3, 1.3 ± 0.8, and 0.4 ± 0.4, respectively. Statistical analysis showed that the abundance of fragments, fibers and films ...
Source: Bulletin of Environmental Contamination and Toxicology - September 13, 2023 Category: Environmental Health Authors: Yulia Irnidayanti Agoes Soegianto Aurigha Haidar Brabo Fabian Muhammad Abdilla Trisnadi Widyaleksono Catur Putranto Carolyn Melissa Payus Source Type: research

On ability of perch to colonize new waterbodies - indirect evidence and sticky facts. A Comment on: 'Multiple lines and levels of evidence for avian zoochory promoting fish colonization of artificial lakes' (2023), by Garcia et al 
Biol Lett. 2023 Sep;19(9):20230233. doi: 10.1098/rsbl.2023.0233. Epub 2023 Sep 13.NO ABSTRACTPMID:37700702 | PMC:PMC10498351 | DOI:10.1098/rsbl.2023.0233
Source: Biology Letters - September 13, 2023 Category: Biology Authors: Anti Vasem ägi Magnus Huss Anna G årdmark Mikhail Ozerov Source Type: research

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