The present study was designed to investigate the effect of rutin on ethanol-induced hepatotoxicity in a dose-dependent manner in rats. Male albino rats were divided into six groups. Group 1 rats served as control and group 2 rats received rutin 100 mg/kg body weight. Hepatotoxicity was induced in groups 3-6 rats (20% ethanol) for 60 days. In addition, groups 4-6 rats received rutin at doses of 25, 50, 100 mg/kg body weight, respectively for the last 30 days of the experiment. We observed a significant increase in the activities of liver marker enzymes, serum amino transferases, alkaline phosphatase, γ-glutamyl transpeptidase the levels of thiobarbituric acid reactive substances, conjugated dienes, lipid hydroperoxides, and a decrease in the activities of superoxide dismutase (SOD), catalase (CAT), glutathione and its related enzymes, vitamins C and E when compared to ethanol-fed rats. Rutin supplementation along with ethanol significantly decreased the levels of liver marker enzymes, lipid peroxidation and significantly elevated the activities of liver SOD, CAT, GSH, glutathione peroxidase, vitamins C and E when compared to untreated ethanol supplemented rats. Among the three doses, 100 mg/kg body weight of rutin was found to exert a more pronounced hepatoprotective effect against ethanol-induced toxicity. Our results were also confirmed by the histopathologic observations.

These data provide new insights into the therapeutic approach of d-limonene against the development of the metabolic syndrome associated with NAFLD.

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