title: Circulating CK-MB and CK-BB isoenzyme after gastrointestinal surgery.
abstract: The effect of gastrointestinal surgery on serum creatine kinase activity was studied in 30 patients. The MB isoenzyme was demonstrated in sera of 30% of the patients and BB isoenzyme in 23%. MB content varied from 0.8 to 10.3% of the total creatine kinase activity, and the BB content from 0.6 to 18.4%. The CK-BB was probably of gastrointestinal origin, since gastrointestinal tract contains high CK activity with BB isoenzyme predominating. A cardiac origin for the observed serum CK-MB isoenzyme increase would seem the most likely, although no patients showed evidence of electrocardiographic changes. Increased CK-MB activity has been observed in myocardial ischaemia without infarction.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003402:Creatine Kinase / Q000097:blood*; D004064:Digestive System / Q000201:enzymology; D013505:Digestive System Surgical Procedures; D005260:Female; D006801:Humans; D007527:Isoenzymes; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period
chemical_list: D007527:Isoenzymes; D003402:Creatine Kinase