@article {Tsung200, author = {S H Tsung}, title = {Circulating CK-MB and CK-BB isoenzyme after gastrointestinal surgery.}, volume = {35}, number = {2}, pages = {200--203}, year = {1982}, doi = {10.1136/jcp.35.2.200}, publisher = {BMJ Publishing Group}, 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.}, issn = {0021-9746}, URL = {https://jcp.bmj.com/content/35/2/200}, eprint = {https://jcp.bmj.com/content/35/2/200.full.pdf}, journal = {Journal of Clinical Pathology} }