metformin rescues the myocardium from doxorubicin-induced energy starvation and mitochondrial damage in rats
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2012
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Abstract
Clinical use of doxorubicin (DOX) is limited by its cardiotoxic side effects. Recent studies established that metformin (MET), an oral antidiabetic drug, possesses an antioxidant activity. However, whether it can protect against DOX-induced energy starvation and mitochondrial damage has not been reported. Our results, in a rat model of DOX-induced cardiotoxicity, show that DOX treatment significantly increased serum levels of LDH and CK-MB, indicators of cardiac injury, and induced expression of hypertrophic gene markers. DOX also caused marked decreases in the cardiac levels of glutathione, CoA-SH and ATP, and mRNA expression of catalase and NQO-1. These biochemical changes were associated with myocardial histopathological and ultrastructural deteriorations, as observed by light and electron microscopy, respectively. Cotreatment with MET (500 mg/kg) eliminated all DOX-induced biochemical, histopathological, and ultrastructural changes. These findings demonstrate that MET successfully prevents DOX-induced cardiotoxicity in vivo by inhibiting DOX-induced oxidative stress, energy starvation, and depletion of intramitochondrial CoA-SH.
| Reference Key |
ashour2012oxidativemetformin
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|---|---|
| Authors | ;Abdelkader E. Ashour;Mohamed M. Sayed-Ahmed;Adel R. Abd-Allah;Hesham M. Korashy;Zaid H. Maayah;Hisham Alkhalidi;Mohammed Mubarak;Abdulqader Alhaider |
| Journal | journal of aoac international |
| Year | 2012 |
| DOI |
10.1155/2012/434195
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| URL | |
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