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Pathology General 499cbe58

Free radical scavanging system enzyme is

A
NADPH oxidase
B
Glutathione peroxidase
C
Endonuclease
D
Phospholipase
High-Yield Explanation
Answer-B. Glutathione peroxidaseAntioxidant mechanisms1. Non-enzymatic systemAntioxidants (Vit E , Vit A, Vit C, glutathione and Cysteine)Tissue proteins (transferrin, ferritin, laetofeftifl, and ceruloplasmin).2. Enzymatic systemCatalaseSupuoxide damutase (SOD)3. Glutathione peroxidasePresent in mitochondria & cytosol.It catalyzes free radical breakdown.H2O2 + 2 G S H - G S S G + 2 H2O2OH + 2 G S H - G S S G + 2H2O

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