Abstract
We investigated the antioxidative property of T-0970, a newly synthesized ureidophenol derivative. The inhibitory effect of T-0970 on spontaneous lipid peroxidation in rat brain was 10 times greater than those of well-known antioxidants such as butylhydroxytoluene (BHT), probucol and α-tocopherol. T-0970 also showed dose-dependent free radical scavenging activities in vitro for both superoxide anions and hydroxyl radicals. The radical-scavenging potencies of T-0970 were about 10–30 times stronger than those of BHT. We evaluated the in vivo antioxidative ability of T-0970 in the animal model of acute oxidative tissue injury in rats. Intraperitoneal injection of ferric nitrilotriacetate (Fe/NTA) caused an acute and remarkable increase in the level of thiobarbituric acid-reactive substances (TBARS) in both plasma and the liver, and also resulted in a considerable elevation of the plasma levels of GOT and GPT indicative of hepatic injury. Both oral and intravenous administration of T-0970 dose-dependently depressed these diagnostic parameters. These results indicate that T-0970 may have a therapeutic potential in various diseases associated with oxidative tissue injury.
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