Abstract
The phenolic composition of the free phenolic extract from Sphallerocarpus gracilis seeds was analyzed by HPLC-MS and predominant compounds were chlorogenic acid, di-caffeoylquinic acid glucoside and luteolin-7-O-glucoside. The free phenolic extract was evaluated for DNA damage protective activity induced by ROO and OH radicals and hepatoprotective effect in vivo and in vitro. Results revealed that the free phenolic extract exhibited significant protective activity against both ROO and OH radical-induced DNA damage and the phenolic extract exerted more potent inhibitory activity against OH radical-induced damage than against that induced by ROO radicals. In vivo experimental results showed that the phenolic extract significantly prevented the increase of serum alanine aminotransferase, aspartate aminotransferase and alkaline phosphatase activities and hepatic malondialdehyde level caused by CCl4 in rats, and markedly increased hepatic superoxide dismutase, catalase and glutathione peroxidase levels. Histopathological examinations further confirmed that the phenolic extract could protect the liver from CCl4-induced damage. In vitro experimental results showed that the phenolic extract could reduce BRL hepatocyte apoptosis and damage induced by CCl4. These findings indicate that the S. gracilis seed could be developed as a medicinal herb for the therapy and prevention of hepatic injury.
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