Amelioration Of Doxorubicin Induced Cardiotoxicity

The therapeutic usefulness of doxorubicin (DXR), an anthracycline antibiotic, is limited by its cardiotoxicity. The present study investigated the effects of vitamin E, carvedilol, telmisartan and omega-3 against doxorubicin-induced cardiotoxicity in rats using biochemical approaches . Telmisartan (1 mg/kg/day) orally, vitamin E(100 mg/kg) orally. carvedilol (10mg/kg) orally and omega-3 (20 mg/kg) orally were administered orally for 7 days followed by doxorubicin (15 mg/kg) was injected intraperitoneally (ip) as a single dose . Rats treated with DXR showed cardiotoxicity as evidenced by elevation of serum lactate dehydrogenase (LDH) activity, serum creatin kinase (CK-MB);serum malondialdehyde (MDA) level, catalase activity did not change in our study after treatment with doxorubicin . Posttreatment with vitamin E , carvidilol, omega -3 and telmisartan elicited a significant decrease in the activities of LDH and CK-MB in comparison with DXR-treated group. Furthermore , post-treatment with vitamin E , carvidilol, and telmisartan also significantly decreased lipid peroxidation (MDA level) in comparison with DXR group. These results suggest that vitamin E , carvidilol, omega -3 and telmisartan treatment provides a significant protective effect against acute-doxorubicin induced cardiotoxicity in rat.