α-甲基-4-(3-氧-2H-1,2-苯并异硒唑-2-基)苯乙酸的体外抗氧活性

A synthetic seleno-organic compound, α-methyl-4-(3-oxo-2H-1,2-benzoisoselenazol-2-yl) benzeneacetic acid (MBBA) inhibited the lipid peroxidation of rat liver microsome induced by cysteine/Fe²⁺ and NADPH/Fe²⁺, the IC₅₀ (95% confidence limits) values were 12.2(3.8-39.6) and 7.1(2.5-20.3) μmol·L^-１ respectively. Furthermore, it showed a glutathione peroxidase like activity in vitro. However MBBA (2-100 μmol·L^-１) had no direct inhibition on the production of superoxide anions (O^-₂) and hydroxy radical. Our data suggest that MBBA is a novel inhibitor of lipid peroxidation. Its antioxidant effect may be attributed to glutathione peroxidase like activity. The direct free radical quenching activity of MBBA is ruled out.

Antioxidant activities of α-methyl-4-(3-oxo-2H-1,2-benzoisoselenazol-2- yl) benzeneacetic acid in vitro

A synthetic seleno-organic compound, α-methyl-4-(3-oxo-2H-1,2- benzoisoselenazol-2-yl) benzeneacetic acid (MBBA) inhibited the lipid peroxidation of rat liver microsome induced by cysteine/Fe²⁺ and NADPH/Fe²⁺, the IC₅₀ (95% confidence limits) values were 12.2(3.8-39.6) and 7.1(2.5-20.3) μmol·L^-１ respectively. Furthermore, it showed a glutathione peroxidase like activity in vitro. However MBBA (2-100 μmol·L^-１) had no direct inhibition on the production of superoxide anions (O^-₂) and hydroxy radical. Our data suggest that MBBA is a novel inhibitor of lipid peroxidation. Its antioxidant effect may be attributed to glutathione peroxidase like activity. The direct free radical quenching activity of MBBA is ruled out.