GPT and myocardial infarction: Male Wistar rats were first subjected to isoproterenol-induced myocardial infarction [68], resulting in a significant increase of creatine kinase-MB and cardiac troponin, serum glutamic oxaloacetic transaminase, serum glutamic pyruvic transaminase, and lactate dehydrogenase, and reduction of the activity of antioxidant enzymes (i.e., SOD, catalase, glutathione peroxidase, glutathione-S-transferase, and glutathione reductase) in the heart.