Objective:To investigate the effect of TNF-αon regulation of Cx43 and ventricular arrhythmias in rats after myocardial infarction.Method:Sixty male Wistar rats were randomly divided into three groups:MI group(n=20),rhTNFR:Fc group(n=20)and Sham group(n=20).Rats with MI were established by liquid nitrogen cryoinjury method.Programmed electrical stimulation was imposed on the hearts of the three groups to induce ventricular arrhythmia.Protein expression levels of TNF-αand Cx43 were detected by Western blot an...