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  • Title: Activities of mitochondrial aspartate aminotransferase and creatine kinase isoenzyme MB in serum following coronary bypass surgery.
    Author: Huseby NE, Grøstad M, Almdahl SM, Vaage J.
    Journal: Clin Chim Acta; 1990 Dec 31; 195(1-2):1-7. PubMed ID: 2093476.
    Abstract:
    The mitochondrial isoenzyme of aspartate aminotransferase showed only slight increases in serum of twenty-seven patients after uncomplicated coronary bypass surgery, which contrasted the rapid and substantial increases in creatine kinase MB. In seven patients suffering perioperative infarction or serious complications, substantial increases in mitochondrial aspartate aminotransferase were detected and the elevations in creatine kinase MB were prolonged. Mitochondrial aspartate aminotransferase may appear as a specific marker of myocardial necrosis following coronary bypass surgery. The elevations of creatine kinase and creatine kinase MB were detected as early as 5 minutes after onset of coronary reperfusion and slightly higher activities were measured in coronary sinus blood than in systemic blood sampled simultaneously. Increases in mitochondrial aspartate aminotransferase, however, could first be measured 8 hours after reperfusion.
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