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Exercise-induced modulation of calcineurin activity parallels the time course of myofibre transitions.
J Cell Physiol. 2008 Jan; 214(1):126-35.JC

Abstract

This study establishes a causal link between the limitation of myofibre transitions and modulation of calcineurin activity, during different exercise paradigms. We have designed a new swimming-based training protocol in order to draw a comparison between a high frequency and amplitude exercise (swimming) and low frequency and amplitude exercise (running). We initially analysed the time course of muscle adaptations to a 6- or 12-week swimming- or running-based training exercise program, on two muscles of the mouse calf, the slow-twitch soleus and the fast-twitch plantaris. The magnitude of exercise-induced muscle plasticity proved to be dependent on both the muscle type and the exercise paradigm. In contrast to the running-based training which generated a continuous increase of the slow phenotype throughout a 12-week training program, swimming induced transitions to a slower phenotype which ended after 6 weeks of training. We then compared the time course of the exercise-induced changes in calcineurin activity during muscle adaptation to training. Both exercises induced an initial activation followed by the inhibition of calcineurin. In the muscles of animals submitted to a 12-week swimming-based training, this inhibition was concomitant with the end of myofibre transition. Calcineurin inhibition was a consequence of the inhibition of its catalytic subunit gene expression on one hand, and of the expression increase of the modulatory calcineurin interacting proteins 1 gene (MCIP1), on the other. The present study provides the first experimental cues for an interpretation of muscle phenotypic variation control.

Authors+Show Affiliations

Université Paris Descartes, Centre Universitaire des Saints-Pères, Laboratoire de Neurobiologie des Réseaux Sensorimoteurs, UMR 7060 CNRS, Equipe Biologie du Développement et de la Différenciation Neuromusculaire, Paris Cedex, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17559060

Citation

Grondard, Clément, et al. "Exercise-induced Modulation of Calcineurin Activity Parallels the Time Course of Myofibre Transitions." Journal of Cellular Physiology, vol. 214, no. 1, 2008, pp. 126-35.
Grondard C, Biondi O, Pariset C, et al. Exercise-induced modulation of calcineurin activity parallels the time course of myofibre transitions. J Cell Physiol. 2008;214(1):126-35.
Grondard, C., Biondi, O., Pariset, C., Lopes, P., Deforges, S., Lécolle, S., Gaspera, B. D., Gallien, C. L., Chanoine, C., & Charbonnier, F. (2008). Exercise-induced modulation of calcineurin activity parallels the time course of myofibre transitions. Journal of Cellular Physiology, 214(1), 126-35.
Grondard C, et al. Exercise-induced Modulation of Calcineurin Activity Parallels the Time Course of Myofibre Transitions. J Cell Physiol. 2008;214(1):126-35. PubMed PMID: 17559060.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Exercise-induced modulation of calcineurin activity parallels the time course of myofibre transitions. AU - Grondard,Clément, AU - Biondi,Olivier, AU - Pariset,Claude, AU - Lopes,Philippe, AU - Deforges,Séverine, AU - Lécolle,Sylvie, AU - Gaspera,Bruno Della, AU - Gallien,Claude-Louis, AU - Chanoine,Christophe, AU - Charbonnier,Frédéric, PY - 2007/6/15/pubmed PY - 2007/12/15/medline PY - 2007/6/15/entrez SP - 126 EP - 35 JF - Journal of cellular physiology JO - J Cell Physiol VL - 214 IS - 1 N2 - This study establishes a causal link between the limitation of myofibre transitions and modulation of calcineurin activity, during different exercise paradigms. We have designed a new swimming-based training protocol in order to draw a comparison between a high frequency and amplitude exercise (swimming) and low frequency and amplitude exercise (running). We initially analysed the time course of muscle adaptations to a 6- or 12-week swimming- or running-based training exercise program, on two muscles of the mouse calf, the slow-twitch soleus and the fast-twitch plantaris. The magnitude of exercise-induced muscle plasticity proved to be dependent on both the muscle type and the exercise paradigm. In contrast to the running-based training which generated a continuous increase of the slow phenotype throughout a 12-week training program, swimming induced transitions to a slower phenotype which ended after 6 weeks of training. We then compared the time course of the exercise-induced changes in calcineurin activity during muscle adaptation to training. Both exercises induced an initial activation followed by the inhibition of calcineurin. In the muscles of animals submitted to a 12-week swimming-based training, this inhibition was concomitant with the end of myofibre transition. Calcineurin inhibition was a consequence of the inhibition of its catalytic subunit gene expression on one hand, and of the expression increase of the modulatory calcineurin interacting proteins 1 gene (MCIP1), on the other. The present study provides the first experimental cues for an interpretation of muscle phenotypic variation control. SN - 1097-4652 UR - https://www.unboundmedicine.com/medline/citation/17559060/Exercise_induced_modulation_of_calcineurin_activity_parallels_the_time_course_of_myofibre_transitions_ L2 - https://doi.org/10.1002/jcp.21168 DB - PRIME DP - Unbound Medicine ER -