IL37 and myocardial infarction: In addition to the early ischemic death of cardiomyocytes, apoptosis accounts for the loss of surviving cardiomyocytes in the late stage of MI.43 Several studies have shown that apoptosis is associated with cardiomyocyte death within 4 hours and is also present for up to 30 days after coronary artery ligation.44, 45 Moreover, inflammation plays an important part in cardiomyocyte apoptosis after MI.46, 47 In this study, we demonstrated that IL‐37 could attenuate cardiomyocyte apoptosis on days 1 and 28 in the infracted heart and this could be ascribed to the decreased inflammatory response.