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  • Title: Hepatoprotective and antioxidant activities of grapeseeds against ethanol-induced oxidative stress in rats.
    Author: Dogan A, Celik I.
    Journal: Br J Nutr; 2012 Jan; 107(1):45-51. PubMed ID: 21733325.
    Abstract:
    The present study was carried out to evaluate the hepatoprotective effect and antioxidant role of grape (Vitis vinifera L.) seeds (GS) against ethanol-induced oxidative stress. The hepatoprotective and antioxidant roles of the GS supplementation feed against ethanol-induced oxidative stress were evaluated by measuring liver damage serum marker enzymes, aspartate aminotransferase, alanine aminotransferase, γ-glutamyl transpeptidase and lactate dehydrogenase, antioxidant defence system such as GSH, glutathione reductase, superoxide dismutase, glutathione S-transferase and glutathione peroxidase and malondialdehyde (MDA) content in various tissues of rats. Rats were divided into four experimental groups: I (control), II (20 % ethanol), III (15 % GS) and IV (20 % ethanol+15 % GS). According to the results, the level of serum marker enzymes was significantly increased in group II as compared to that of group I, but decreased in group IV as compared to that of group II. Also, administration of GS-supplemented food restored the ethanol-induced MDA, which was increased near the control level. The results indicated that GS could be as important as diet-derived antioxidants in preventing oxidative damage in the tissues by reducing the lipid oxidation or inhibiting the production of ethanol-induced free radicals in rats.
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