Abstract
Myocardial ischemia and reperfusion (MI/R) is associated with an intense inflammatory reaction, which may lead to myocyte injury. In this study, we investigated the effect of quercetin, an inhibitor of c-Jun N-terminal kinase on ischemia/reperfusion injury in isolated rat hearts. Rat models of MI/R were induced by coronary occlusion followed by reperfusion, treatment of rats with quercetin (1.0 mg/kg, i.v.) induced a significant reduction of infarct volume and improvements in baseline hemodynamic abnormalities (P < 0.05). Quercetin treatment also attenuated the expression of both TNF-alpha (TNF-α) and interleukin-10 (IL-10) and lowered the serum levels of inflammatory cytokine (P < 0.05). These findings suggested that quercetin treatment significantly attenuated MI/R injury primarily through anti-inflammatory effects.
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