Myocardial ultrastructure after acute exercise stress with special reference to transverse tubules and intercalated discs
- 1 November 1972
- journal article
- research article
- Published by Oxford University Press (OUP) in Cardiovascular Research
- Vol. 6 (6) , 671-679
- https://doi.org/10.1093/cvr/6.6.671
Abstract
The ultrastructure of the myocardium was evaluated in perfused-fixed hearts from rats acutely stressed by exhaustive exercise. Vesiculations in the intercalated disc region, which arise from non-specialized gaps and communicate with T tubules, show varying degrees of dilatation. Mitochondria and sarcoplasmic reticulum maintain normal ultrastructure. Alterations after acute exercise may be related to ionic changes.Keywords
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