Propolis Protects against Doxorubicin-Induced Myocardiopathy in Rats
Propolis (bee glue) is one of the major hive products of bees and is rich in flavonoids, which are known for antioxidant activities. Doxorubicin-induced myocardiopathy is the consequence of oxidative stress through the mediation of free radicals. The effect of intraperitoneal administration of propolis (50 and 100 mg/kg) was studied on cardiomyopathy produced by doxorubicin (10 mg/kg, iv) in rats. Serum creatine phosphokinase (CK), aspartate aminotransferase (AST), blood and tissue glutathione (GSH), and thiobarbituric acid reactive substances (TBARS) in heart were estimated to assess the status of heart muscle. An elevation of the levels of CK, AST, GSH, and TBARS was observed following doxorubicin treatment. Parallel experiments with a pretreatment of propolis significantly reduced the levels of these parameters. Biochemical observations were supplemented by histopathological examination of heart sections. The protective effect of propolis was compared with that of rutin, a known cardioprotective flavonoid. The study demonstrates the cardioprotective effect of propolis in doxorubicin-induced experimental cardiotoxicity.
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