Document Detail

Morphological study of myocardial capillaries in endurance trained rats.
MedLine Citation:
PMID:  2265309     Owner:  NLM     Status:  MEDLINE    
In this morphological study of the effects of training on myocardial capillaries, four week old Wistar rats were selected to accept four months of treadmill training. The rats were then sacrificed for morphological study of myocardial capillaries by means of perfused Chinese ink, AKP stain and ultrathin section methods. The results showed that the number of capillaries in trained rats was increased markedly by 14.8 per cent (P less than 0.05) in the outer layer and 13.7 per cent (P less than 0.05) in the inner layer. The ratio of capillaries to myocardial fibres was increased by 17.6 per cent and 13.7 per cent (P less than 0.05) respectively. The area and girth of capillaries in the trained rats were increased by 25 per cent and 26 per cent (P less than 0.01) respectively. Collateral branches in the trained rats were also increased and were more irregular in shape or appeared locally expanding and tortuous. Unopened capillaries were often observed in the control rats, while in the trained rats, no unopened capillaries were observed. In addition, the small vacuoles in the cytoplasm of endothelial cells were also increased.
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  British journal of sports medicine     Volume:  24     ISSN:  0306-3674     ISO Abbreviation:  Br J Sports Med     Publication Date:  1990 Jun 
Date Detail:
Created Date:  1991-02-11     Completed Date:  1991-02-11     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0432520     Medline TA:  Br J Sports Med     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  113-6     Citation Subset:  IM    
Department of Anatomy, Beijing Institute of Physical Education, China.
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MeSH Terms
Capillaries / ultrastructure
Coronary Vessels / ultrastructure*
Microscopy, Electron
Physical Endurance*
Rats, Inbred Strains

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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