Effect of squalene on tissue defense system in isoproterenol-induced myocardial infarction in rats - PubMed (original) (raw)

Comparative Study

Effect of squalene on tissue defense system in isoproterenol-induced myocardial infarction in rats

K H Sabeena Farvin et al. Pharmacol Res. 2004 Sep.

Abstract

This study was designed to examine the effects of squalene on tissue antioxidant status in isoproterenol-induced myocardial infarction in male albino rats. Levels of diagnostic marker enzymes [alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and creatine phosphokinase (CPK)] in plasma, lipid peroxides, reduced glutathione, and the activities of glutathione-dependent antioxidant enzymes [glutathione peroxidase (GPx) and glutathione-S-transferase (GST)] and antiperoxidative enzymes [catalase (CAT) and superoxide dismutase (SOD)] in the heart tissue of experimental groups of rats were determined. The prior administration of squalene at 2% level along with feed for 45 days significantly prevented the isoproterenol-induced elevation in the levels of diagnostic marker enzymes in plasma of experimental rats. Squalene also exerted an antioxidant effect against isoproterenol-induced myocardial infarction by blocking the induction of lipid peroxidation. A tendency to prevent the isoproterenol-induced alterations in the level of reduced glutathione and in the activities of glutathione-dependent antioxidant enzymes and antiperoxidative enzymes was also observed. The cardioprotective effect of squalene might be ascribable to its antioxidant property and membrane stabilizing action.

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Effect of squalene on tissue defense system in isoproterenol-induced myocardial infarction in rats - PubMed (original) (raw)