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Selenium: Essential Functions and Benefits in Nutrition

Explore the crucial roles of selenium in nutrition, from muscle protein composition to antioxidant functions. Understand the impact of selenoproteins on cellular health and thyroid hormone activation.

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Selenium: Essential Functions and Benefits in Nutrition

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  1. Selenium nutrition

  2. Selenium - Functions • Composition of amino-acids – seleno-cysteine (SeCys) and seleno-methionine (SeMet) • Enzymatic processes • Antioxidants: Glutathione peroxidase and thioredoxinreductase • Thyroid hormone activation: Iodothyroninedeiodinase • Muscle protein composition: • Selenoprotein W • Protect cell membranes: • Selenoprotein P

  3. Selenium amino-acids Chemicalstructuresoftheaminoacids, methionineandcysteine, andthecomparableseleno-aminoacids. Source: Weiss, 2008

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