TNNT2 and ischemia: In non-diabetic rats, 30 min of global ischemia and 120 min of reperfusion led to myocardial injury as assessed by a significant increase in the levels of cTnT (Figure 1) and CK-MB (Figure 2) in the coronary perfusate collected during the reperfusion phase in comparison with corresponding basal levels (before ischemia).