The dynamic change of serum CK, CK-MB and myocardium histomorphology after exhausted exercise in rats.
- Author:
Fu-Wen WANG
1
;
Jing-Guo ZHAO
;
Yan WANG
;
Jie LI
;
Zhi-Li HU
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Creatine Kinase; blood; Creatine Kinase, MB Form; blood; Fatigue; blood; Male; Myocardium; pathology; Physical Exertion; physiology; Rats; Rats, Wistar; Swimming; physiology
- From: Chinese Journal of Applied Physiology 2011;27(1):52-55
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the dynamic changes of serum CK, CK-MB and myocardium histomorphology in different time periods after single bout and repeated exhausted exercise in rats.
METHODSThe animal models of myocardial injury were established by exhausted swimming. Creatine kinase (CK), creatine kinase mass (CK-MB) activities in serum were measured immediately at 3, 6, 12, 24, 48 and 96 hours after exhausted exercise, and the dynamic changes of myocardial histopathology were examined.
RESULTSThe CK, CK-MB activities were significantly increased immediately at 3, 6, 12 hours and peaked at 6 hours after single bout of exhausted exercise, meantime the degree of inflammatory cell infiltrate and strong acidophil staining were gradually increased in myocardium of rat, and the myocardial injury was most severe at 12 hours. After 1-week consecutive daily exhausted swimming, CK, CK-MB in serum were obviously increased immediately at, 3, 6, 12, 48 and 96 hours postexercise and peaked immediately and at 96 hours respectively postexercise. There were different degrees of myocardial injury in different time of recovery phase, and was most severe at 48 hours postexercise.
CONCLUSIONThe myocardial injury was induced by excessive exercise and/or exhausted exercise, and the resulting delayed-onset myocardial injury was further certified.