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The underlying mechanisms of cardioprotection of adiponectin (APN) against ischemia/reperfusion (I/R) injury remain largely unknown. The present study aimed to investigate whether calreticulin (CRT) mediated APN’s cardioprotection against I/R injury. We inhibited mice cardiac CRT expression via intra-myocardial injection of CRT SiRNA, performed transient LAD ligation, measured the cardiac function,...
Diabetes increases the risk of cardiovascular diseases. Berberine (BBR), an isoquinoline alkaloid used in Chinese medicine, exerts anti-diabetic effect by lowering blood glucose and regulating lipid metabolism. It has been reported that BBR decreases mortality in patients with chronic congestive heart failure. However, the molecular mechanisms of these beneficial effects are incompletely understood...
Insulin has been shown to possess significant anti-apoptotic effect in myocardial ischemia/reperfusion (MI/R). However, the contribution by this protection of insulin to the prolonged cardiac function in rats subjected to ischemia remains unclear. The present study attempted to test whether early insulin treatment influences adverse prolonged post-ischemic cardiac structural and functional changes...
Objective Sympathetic overactivity is closely connected with cell injury and contractile dysfunction during myocardial ischemia/reperfusion (MI/R). Insulin exerts protection for the I/R heart and the underlying mechanisms remain unclear. This study aimed to investigate the ability of insulin to modulate β-adrenergic actions on myocardial contraction and post-ischemic injury in acute MI/R and the underlying...
Objective Physical activity has been shown to improve cardiovascular function and to be beneficial to type 2 diabetic patients. However, the effects of aerobic exercise (AE) on myocardial ischemia/reperfusion (MI/R) are largely unclear. Therefore, the aims of the present study were to determine whether long-term AE can protect the heart against I/R injury, and if so, to investigate the underlying...
Objectives: Our previous study has shown that slow or “controlled” reperfusion for the ischemic heart reduces cardiomyocyte injury and myocardial infarction, while the mechanisms involved are largely unclear. In this study, we tested the hypothesis that enhancement of survival and prevention of apoptosis in hypoxic/reoxygenated cardiomyocytes by hypoxic postconditioning (HPC) are associated with...
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