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  • Title: Effect of macrocyclic binuclear oxovanadium complex on tissue defense system in streptozotocin-induced diabetic rats.
    Author: Ramachandran B, Ravi K, Narayanan V, Kandaswamy M, Subramanian S.
    Journal: Clin Chim Acta; 2004 Jul; 345(1-2):141-50. PubMed ID: 15193989.
    Abstract:
    BACKGROUND: Oxidative stress plays an important role in chronic complications of diabetes mellitus and hence the regulation of free radicals is essential in the treatment of diabetes. The protective effect of a new macrocyclic binuclear oxovanadium complex on antioxidant defense systems of liver and kidney was examined in streptozotocin-induced experimental diabetes in rats. METHODS: The levels of lipid peroxides, glutathione and the activities of superoxide dismutase, catalase, glutathione peroxidase and glutathione-S-transferase were assayed according to standard procedures in the liver and kidney of control and experimental groups of rats. RESULTS: A significant decrease (p < 0.05) was observed in both the glutathione content and in the activities of antioxidant enzymes such as superoxide dismutase, catalase, glutathione peroxidase and a concomitant increase in the level of lipid peroxides in diabetic rats. The observed alterations in the antioxidant status of tissues reverted back to near normal levels after the oral administration of macrocyclic vanadium complex at a dose of 5 mg/kg body weight/rat/day for a period of 30 days. CONCLUSION: The normoglycemic efficacy of the vanadium complex alleviates oxidative stress in streptozotocin-induced diabetes in rats.
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