Aspartate Amino - Alanine Amino - Lactate Dehydro - Isoenzymes Creatine Kinase transferase

Heart tissue injury may release cardiac enzymes into the circulation and elevate serum enzyme levels (LaDue, Wroblewski, and Karmen, 1954). Many enzymes become raised, but three enzymesaspartate aminotransferase (EC 2.6.1.1), creatine kinase (EC 2.7.3.2), and lactate dehydrogenase (EC 1.1.1.27)-have proved of particular diagnostic value. In addition, determination of lactate dehydrogenase isoenzymes by electrophoresis or other methods may be helpful, as may be the combined estimation of alanine aminotransferase (EC 2.6.1.2) and aspartate aminotransferase.