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Selenium is one of the compounds belonging to the trace minerals group, which needs less than 100 mg/day. This element is one of the main constituents of selenoproteins, and the function of selenoproteins is to help make DNA and protect cells from damage and infection. This experiment aimed to evaluate the effect of different sources of selenium on some mineral elements in the blood serum of lambs. This experiment was conducted using twenty 4-month-old lambs with an average weight of 37±2.2 kg, 4 treatments, and 5 replications in a completely randomized design (CRD). The treatments tested included control, sodium selenite, nano selenium, and VitEsel. The experiment duration was 30 days, and blood sampling of lambs was performed at the beginning of the experiment (zero), 15, and 30 days. Different sources of selenium significantly affected the concentrations of iron, copper, and zinc (<0.05). Different sources of selenium in this experiment decreased the concentration of iron and copper and increased the concentration of zinc and plasma selenium in different periods (<0.05). Using different sources of selenium changed the concentration of the studied elements and showed the difference in their bioavailability.
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http://dx.doi.org/10.22092/ARI.2022.359471.2427 | DOI Listing |
PLoS One
September 2025
Bureau of Qinghai Environmental Geological Prospecting, Xi'ning, China.
This study focuses on mineral groundwater in alpine regions and its sustainable exploitation. The Tongde basin on Tibetan Plateau was investigated to reveal the hydrochemistry and formation of mineral groundwater in alpine basins and its sustainable development under anthropogenic disturbances. The results show that groundwater there is characterized by enriched strontium, with concentrations in the range of 0.
View Article and Find Full Text PDFJ Agric Food Chem
September 2025
Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Haidian 100080, China.
Metal ions play a vital role in the health of the modern human body, but deficiencies in mineral elements have created health risks worldwide. However, mineral supplements currently available on the market are very limited due to poor solubility, low bioavailability, and the possibility of adverse effects on the gastrointestinal tract. In contrast, protein-derived metal-chelating peptides have received a lot of attention because of their stability, safety, and very high bioavailability.
View Article and Find Full Text PDFMed Phys
September 2025
Department of Biomedical Engineering, University of California at Davis, Davis, California, USA.
Background: High-resolution and high-sensitivity small-animal positron emission tomography (PET) scanners are essential non-invasive functional imaging tools in preclinical research. To develop small-animal PET scanners with uniform and high spatial resolution across the field-of-view, PET detectors capable of providing good depth-of-interaction (DOI) information are critical. Dual-ended readout detectors based on lutetium-yttrium oxyorthosilicate (LYSO) arrays with fine pitch represent a promising approach, wherein the choice of inter-crystal reflector significantly impacts the detector performance.
View Article and Find Full Text PDFGlob Chang Biol
September 2025
State Key Laboratory of Vegetation Structure, Function and Construction (VegLab), Ministry of Education Key Laboratory of Earth Surface Processes, and College of Urban and Environmental Sciences, Peking University, Beijing, China.
Microbial nitrogen use efficiency (NUE) describes the partitioning of organic N between microbial growth and N mineralization, which is crucial for assessing soil N retention. However, how warming affects NUE along soil depth remains unclear. Based on a whole-soil-profile warming experiment (0 to 100 cm, +4°C) on the Qinghai-Tibetan Plateau, combined with O and N isotope labeling techniques, we determined soil carbon (C) composition, edaphic properties, and microbial parameters.
View Article and Find Full Text PDFMed Phys
September 2025
Medical Physics Unit, Department of Oncology, Faculty of Medicine, McGill University, Montréal, Québec, Canada.
Background: Se ( 120 days, 215 keV) offers advantages over Ir ( 74 days, 360 keV) as a high dose rate brachytherapy source due to its lower gamma energy and longer half-life. Despite its widespread use in industrial gamma radiography, a Se brachytherapy source has yet to be manufactured.
Purpose: A novel Se-based source design with a vanadium diselenide core, titled the SeCure source, was proposed.