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Effects of one bout of endurance exercise on the expression of myogenin in human quadriceps muscle
Örebro University, School of Health and Medical Sciences. (RISPA)ORCID iD: 0000-0002-9831-0896
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2004 (English)In: Histochemistry and Cell Biology, ISSN 0948-6143, E-ISSN 1432-119X, Vol. 121, no 4, 329-334 p.Article in journal (Refereed) Published
Abstract [en]

The objective of this study was to investigate the cellular localisation of MyoD and myogenin in human skeletal muscle fibres as well as the possible alterations in the expression of MyoD and myogenin in response to a single bout of endurance exercise at 40% and 75% of maximum oxygen uptake (VO(2) max). Twenty-five biopsies (5 per subject) from the vastus lateralis muscle were obtained before exercise, from the exercising leg at 40% and 75% of VO(2) max and from the resting leg following these exercise bouts. The tyramide signal amplification-direct and the Vectastain ABC methods using specific monoclonal antibodies were used to determine the exact location of myogenin and MyoD, to identify muscle satellite cells and to determine myosin heavy chain (MyHC) composition. At rest, myonuclei did not express MyoD or myogenin. Following a single bout of exercise at 40% and 75% of VO(2) max, an accumulation of myogenin in myonuclei and not in satellite cells was observed in biopsies from the exercised leg but not in biopsies before exercise and from the resting leg. The number of myogenin-positive myonuclei varied among individuals indicating differences in the response to a single exercise bout. In conclusion, this immunohistochemical study showed that a rapid rearrangement of myogenin expression occurs in exercised human skeletal muscles in response to a single bout of exercise.

Place, publisher, year, edition, pages
2004. Vol. 121, no 4, 329-334 p.
National Category
Medical and Health Sciences Physiology Social Sciences Interdisciplinary Sport and Fitness Sciences
Research subject
Sports Science
Identifiers
URN: urn:nbn:se:oru:diva-6279DOI: 10.1007/s00418-004-0630-zPubMedID: 14997318OAI: oai:DiVA.org:oru-6279DiVA: diva2:211707
Available from: 2009-04-17 Created: 2009-04-17 Last updated: 2016-12-07Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
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  • de-DE
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