Studies have shown that liraglutide and ANP have protective effects on diabetic cardiomyopathy, liraglutide has protective effects on myocardial infarction and hypertrophy in diabetic mice, and exogenous ANP can improve myocardial injury caused by ischemia reperfusion in diabetic mice (50, 51, 52). Here, NPPA is linked to myocardial infarction.