Document Detail

Influence of exercise on the activity and the distribution between free and bound forms of glycolytic and associated enzymes in tissues of horse mackerel.
MedLine Citation:
PMID:  11471046     Owner:  NLM     Status:  MEDLINE    
The effects of short-term burst (5 min at 1.8 m/s) swimming and long-term cruiser (60 min at 1.2 m/s) swimming on maximal enzyme activities and enzyme distribution between free and bound states were assessed for nine glycolytic and associated enzymes in tissues of horse mackerel, Trachurus mediterraneus ponticus. The effects of exercise were greatest in white muscle. The activities of phosphofructokinase (PFK), pyruvate kinase (PK), fructose-1,6-bisphosphatase (FBPase), and phosphoglucomutase (PGM) all decreased to 47, 37, 37 and 67%, respectively, during 60-min exercise and all enzymes except phosphoglucoisomerase (PGI) and PGM showed a change in the extent of binding to subcellular particulate fractions during exercise. In red muscle, exercise affected the activities of PGI, FBPase, PFK, and lactate dehydrogenase (LDH) and altered percent binding of only PK and LDH. In liver, exercise increased the PK activity 2.3-fold and reduced PGI 1.7-fold only after 5 min of exercise but altered the percent binding of seven enzymes. Fewer effects were seen in brain, with changes in the activities of aldolase and PGM and in percent binding of hexokinase, PFK and PK. Changes in enzyme activities and in binding interactions with subcellular particulate matter appear to support the altered demands of tissue energy metabolism during exercise.
V I Lushchak; T V Bagnyukova; J M Storey; K B Storey
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Brazilian journal of medical and biological research = Revista brasileira de pesquisas médicas e biológicas / Sociedade Brasileira de Biofísica ... [et al.]     Volume:  34     ISSN:  0100-879X     ISO Abbreviation:  Braz. J. Med. Biol. Res.     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-07-25     Completed Date:  2001-10-18     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  8112917     Medline TA:  Braz J Med Biol Res     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  1055-64     Citation Subset:  IM    
Department of Natural Sciences, Precarpathian University, 57 Shevchenko Str., Ivano-Frankivsk, 76000 Ukraine.
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MeSH Terms
Brain / enzymology
Enzymes / analysis,  metabolism*
Fishes / physiology*
Fructose-Bisphosphatase / metabolism
Glycolysis / physiology*
Liver / enzymology
Muscle, Skeletal / enzymology*
Phosphofructokinase-1 / metabolism
Phosphoglucomutase / metabolism
Physical Conditioning, Animal / physiology*
Swimming / physiology
Reg. No./Substance:
0/Enzymes; EC; EC; EC

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

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