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Antioxidant enzymes, such as glutathione peroxidases and peroxiredoxins, generate glutathione disulfide during the reduction of peroxides such as hydrogen peroxide (H2O2) and organic hydroperoxides (ROOH): 2 GSH + ROOH GSSG + ROH + H2O Other enzymes, such as glutaredoxins, generate glutathione disulfide through thiol-disulfide exchange with protein disulfide bonds or other low molecular mass compounds, such as coenzyme A disulfide or dehydroascorbic acid
Homocysteine-lowering vitamins do not lower plasma S-adenosylhomocysteine in older people with elevated homocysteine concentrations
Kralj et al., 2017)
Similar findings in ME/CFS patients suggest that micro-clots and platelet hyperactivation could also play a role in the pathology of this condition, potentially driven by elevated oxidative stress (Nunes et al., 2022)
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