Abstract
Myocardial acute infarction (IAM), the major cause of death in the world, is a ischemic coronarian desease, whose more common cause is occlusion of one or more coronarian artheries which create ischemia and tecidual necrosis. Isoproterenol (ISO) is a B-adrenergic agonist that at high doses contract coronarian artheries conducing to myocardial ischemia, and augment intracelular Ca2+, maki…