Topic
Selenium
About: Selenium is a research topic. Over the lifetime, 21192 publications have been published within this topic receiving 429715 citations. The topic is also known as: Se & selen.
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01 Jan 1987TL;DR: Tricyclic compounds 756 and 757 have been found to exist in low concentration in lavender oil and structure proof was realized by selenium dioxide oxidation of α-cedrene.
Abstract: Tricyclic compounds 756 and 757 have been found to exist in low concentration in lavender oil. Structure proof was realized by selenium dioxide oxidation of α-cedrene. Hydrogenation of 756 and subsequent copper-catalyzed oxidation of the saturated aldehyde furnished 757 [347].
218 citations
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TL;DR: In this article, the results suggest the presence of selenocysteic acid in significant amounts in wheat gluten, seeds and straw from plants grown on soil to which 75Se-selenate had been added.
217 citations
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TL;DR: Selenium removal from well water by the polymer-clay composite, brought levels to below the WHO limit and was selective for selenium even in the presence of sulfur, due to high adsorption of sulfur by the later.
217 citations
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TL;DR: Selenium has a special place among the feed-derived natural antioxidants, being an integral part of selenoproteins participating in the regulation of various physiological processes in the body as discussed by the authors.
Abstract: Selenium (Se) has a special place among the feed-derived natural antioxidants, being an integral part of selenoproteins participating in the regulation of various physiological processes in the bod...
216 citations
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TL;DR: Results clearly show that heat distress, a potent inducer of oxidative stress and hsp70, can be partially ameliorated by feeding organic selenium-fed chickens, and attribute this observation to an enhanced GSH-GPX antioxidant system in organic seenium- fed chickens.
Abstract: Selenium is an essential trace element that up-regulates a major component of the antioxidant defense mechanism by controlling the body's glutathione (GSH) pool and its major Se-containing antioxidant enzyme, glutathione peroxidase (GPX). Evidence has emerged suggesting that organic selenium, natural seleno-amino acids found in plants, grains and selenized yeast, maintains the antioxidant defense system more efficiently than inorganic selenium. Inorganic selenium is a pro-oxidant, whereas organic selenium possesses antioxidant properties itself. As a pro-oxidant, inorganic selenium is not suitable for animals or humans. Therefore, we examined the GSH–GPX system in broiler chickens and determined that organic selenium was indeed more beneficial than inorganic selenium. Chickens fed the organic selenium as Sel-Plex®, a selenized yeast, had elevated GPX activity in both blood and liver in a thermoneutral environment and after heat distress. More importantly, the ability to reduce the oxidized glutathione (GSSG to 2 GSH) was enhanced and facilitated by maintenance of glutathione reductase activity. Organic selenium-fed chickens were less affected by mild heat distress than inorganic selenium-fed chickens, and this assessment was based upon less induction of heat shock protein 70 (hsp70) in organic selenium-fed chickens. Our results clearly show that heat distress, a potent inducer of oxidative stress and hsp70, can be partially ameliorated by feeding organic selenium. We attribute this observation to an enhanced GSH–GPX antioxidant system in organic selenium-fed chickens.
216 citations