Objective:To investigate the effect of exenatide preconditioning on myocardialischemia reperfusion injury in rats and related mechanismsMethods:Thirty—six healthy male SD rats were divided into sham-operated group,model group,and experimental group by table of random number(n=12 each).The rats in sham-operated group were anesthetized for 150mins only with chest opened and without Ligation of the left anterior descending coronary artery.The rats in model group were established by occlusion of the left anteri...