Myocardial Ischemia/Reperfusion Injury
Myocardial ischemia/reperfusion (I/R) injury refers to the damage that occurs to heart muscle tissue when blood flow is restored after a period of ischemia (lack of oxygen). While reperfusion is essential for salvaging ischemic myocardium, it paradoxically can exacerbate cellular damage through mechanisms involving oxidative stress, inflammation, calcium overload, and mitochondrial dysfunction, leading to cardiomyocyte death and impaired cardiac function. Understanding I/R injury is crucial for developing protective strategies in conditions like myocardial infarction and cardiac surgery.
