EDN1 and myocardial infarction: For ET-1, we could observe increased concentration 3 weeks after myocardial infarction (median [IQR]: pre vs. post vs. 3 d vs. 3 w: 2.1 [1.5; 4.9] vs. 2.4 [1.4; 7.0] vs. 3.2 [1.6; 10.2] vs. 4.1 [1.6; 14.3] pg/mL, p = 0.03, Figure 2E).