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The expression of heat shock protein in human skeletal muscle: effects of muscle fibre phenotype and trainingbackground
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden. (Muscle & Exercise Physiology Research Group (MEP-RG) , RISPA)
Department of Orthopaedic Surgery M, Faculty of Health Sciences, Institute of Sports Medicine, Bispebjerg Hospital, Copenhagen, Denmark; Centre for Healthy Ageing, University of Copenhagen, Copenhagen, Denmark.
Department of Orthopaedic Surgery M, Faculty of Health Sciences, Institute of Sports Medicine, Bispebjerg Hospital, Copenhagen, Denmark; Centre for Healthy Ageing, University of Copenhagen, Copenhagen, Denmark.
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden.
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2013 (English)In: Acta Physiologica, ISSN 1748-1708, E-ISSN 1748-1716, Vol. 209, no 1, p. 26-33Article in journal (Refereed) Published
Abstract [en]

Aim

Exercise-induced adaptations of skeletal muscle are related to training mode and can be muscle fibre type specific. This study aimed to investigate heat shock protein expression in type I and type II muscle fibres in resting skeletal muscle of subjects with different training backgrounds.

Methods

Three groups of subjects were included: healthy active not engaged in any training programme (ACT, n = 12), resistance trained (RES, n = 6) and endurance trained (END, n = 8). Biopsies were obtained from vastus lateralis, and immunohistochemistry was performed using monoclonal antibodies against myosin heavy chain I and IIA, αB-crystallin, HSP27, HSP60 and HSP70.

Results

In ACT and RES, but not in END, a fibre type–specific expression with higher staining intensity in type I than type II fibres was seen for αB-crystallin. The opposite (II > I) was found for HSP27 in subjects from ACT (6 of 12 subjects) and RES (3 of 6), whereas all subjects from END displayed uniform staining. HSP60 showed no fibre-specific expression. HSP70 displayed a fibre-specific expression pattern (I > II) in ACT (4 of 12), but not in END or RES.

Conclusion

This study shows that the level of expression of the different HSPs in human skeletal muscle is influenced by muscle fibre phenotype. The fibre type–specific expression of HSP70 is influenced by resistance and endurance training, whereas those of αB-crystallin and HSP27 is influenced only by endurance training, suggesting the existence of a training-modality-specific action on the adaptive processes including heat shock proteins in human skeletal muscle.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2013. Vol. 209, no 1, p. 26-33
Keywords [en]
adaptation; adaptation; endurance; heat shock protein; immunohistochemistry; resistance
National Category
Sport and Fitness Sciences
Research subject
Sports Physiology/Medicine
Identifiers
URN: urn:nbn:se:oru:diva-30127DOI: 10.1111/apha.12124ISI: 000322950400006PubMedID: 23710799Scopus ID: 2-s2.0-84881557932OAI: oai:DiVA.org:oru-30127DiVA, id: diva2:639130
Note

Funding agency:

Nordea Foundation

Available from: 2013-08-06 Created: 2013-08-06 Last updated: 2018-05-19Bibliographically approved

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Folkesson, MattiasOskarsson, EvaPiehl-Aulin, KarinKadi, Fawzi

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