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Cilostazol protects mice against myocardium ischemic/reperfusion injury by activating a PPARγ/JAK2/STAT3 pathway.
Biomedicine & Pharmacotherapy 2017 October
Myocardial ischemia/reperfusion (MIR) injury causes severe arrhythmias and a high lethality. The present study is designed to investigate the effect of cilostazol on MIR injury and the underlying mechaism. We measured the effects of cilostazol on heart function parameters in a mouse model of MIR. Proinflammatory cytokines and apoptosis proteins in the myocardium were examined to investigate the anti-inflammatory and anti-apoptosis ability of cilostazol. The participation of PPARγ/JAK2/STAT3 pathway was investigated. Results showed that the impairment of hemodynamic parameters caused by MIR was attenuated by cilostazol. The IL-6, IL-1β and TNF-a levels were all decreased by cilostazol. Cilostazol also significantly inhibited Bax and cleaved caspase-3 levels and restored the Bcl-2 levels. PPARγ, JAK2 and STAT3 were all activated by cilostazol. Treatment of inhibitors of them abolished the protective effects of cilostazol on cardiac function, myocardial inflammation and apoptosis. In summary, cilostazol alleviated the cardiac function impairment, myocardial inflammation and apoptosis induced by MIR. The results present a novel signaling mechanism that cilostazol protects MIR injury by activating a PPARγ/JAK2/STAT3 pathway.
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