Abstract
The use of the cytotoxic antibiotic doxorubicin (DOXR) is limited by its dose-dependent cardiotoxicity. The aim of this study was to evaluate the cardioprotective effect of the combination of carvedilol (CARD) and liposomal resveratrol (LIPO RESV) against DOXR-induced cardiomyopathy in rats. The results of the present study showed that DOXR administration significantly increased heart weight/body weight ratio by 35.6%, creatine kinase-MB (CK-MB) by 40.6%, troponin-I levels by 85%, and decreased reduced glutathione level and superoxide dismutase activity by 47% and 52%, respectively compared to the control group. Moreover, cardiac caspase-3 protein expression was upregulated by 51.6% vs the control group. In contrast, treatment of DOXR-administered rats with CARD, RESV, or LIPO RESV and their combination for 6 weeks improved all the above-mentioned measured parameters. In conclusion, concomitant administration of CARD and LIPO RESV exerted additive pharmacological effects in some measured parameters against DOXR-induced cardiomyopathy and this may be a useful cardioprotective strategy.