<prompt> Which amongst the following endothelin is involved in MI?Endothelin 1Endothelin 2Endothelin 3Endothelin 4  <response>: Plasma ET-1 levels are raised after acute myocardial infarction due to coronary vasoconstriction-Myocardial ischemia -Ventricular dysfunction. Endothelin ET-1 is a potent coronary vasoconstrictor. 