Add time:07/19/2019         Source:sciencedirect.com

The antioxidant effect of 2-methyl-6-(p-methoxyphenyl)-3,7-dihydroimidazo[1,2-α]pyrazin-3-one (MCLA), a Cypridina luciferin analog that acts as a chemiluminescence probe to detect O⋅−2, was investigated. MCLA produced a lag in oxygen consumption induced by cumene hydroperoxide in microsomes or by 2,2′-azobis (2-amidinopropane) dihydrochloride in liposomes and disappeared during the duration of the lag. MCLA profoundly inhibited the propagation reaction in Fe2+-dependent lipid peroxidation in liposomes, and MCLA disappearance accompanied by suppression of oxygen consumption markedly occurred in liposomes susceptible to peroxidation. Thiobarbituric acid-reactive substances in all systems used were also suppressed by MCLA dose dependently. These results indicate that MCLA has an antioxidant property through scavenging free radicals.

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