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What is Which of the following is NOT an anti oxidant? and explain in detail?
Serum, tissue fluids, and host cells possess antioxidant mechanisms that protect against these potentially harmful oxygen-derived radicals. They include (1) the enzyme superoxide dismutase, which is found in or can be activated in a variety of cell types; (2) the enzyme catalase, which detoxifies H2O2; (3) glutathione peroxidase, another powerful H2O2 detoxifier; (4) the copper-containing serum protein ceruloplasmin; and (5) the iron-free fraction of serum transferrin. Thus, the influence of oxygen-derived free radicals in any given inflammatory reaction depends on the balance between production and inactivation of these metabolites by cells and tissues. Ref: Robbins 8th edition, Chapter 2.