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Published in: European Journal of Applied Physiology 5/2009

01-07-2009 | Original Article

The effect of downhill running on Notch signaling in regenerating skeletal muscle

Authors: Susan K. Tsivitse, Michael G. Peters, Angel L. Stoy, Jeffrey A. Mundy, Robert S. Bowen

Published in: European Journal of Applied Physiology | Issue 5/2009

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Abstract

Notch signaling expression in regenerating muscle following injurious downhill running (DHR) was characterized in male C57BL/J6 mice (3 mo). Hindlimb muscles were harvested from control mice or at 24, 48, 72, 96 or 120 h post-DHR. Muscle injury was observed at 96 h (3.3-fold) and 120 h (3.7-fold) post-DHR (P < 0.01) and elevated MCadherin expression at 72 h (2.7-fold), 96 h (2.4-fold) post-DHR (P < 0.05) and 120 h (3.3-fold) post-DHR (P < 0.01). Desmin increased at 72 h (2.2-fold), 96 h (3-fold) and 120 h (1.8-fold) post-DHR (P < 0.05). Delta1 +/MCadherin + cells increased ~2-fold at 72, 96 (P < 0.01) and 120 h post-DHR (P < 0.05). Isolated muscle-associated cells increased Delta1 (2.6-fold) (P < 0.05) and Notch1 (fourfold) (P < 0.01) expression at 120 h post-DHR. The results of this novel study indicate that DHR up-regulates Notch components within myoblasts and regenerating muscle.
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Metadata
Title
The effect of downhill running on Notch signaling in regenerating skeletal muscle
Authors
Susan K. Tsivitse
Michael G. Peters
Angel L. Stoy
Jeffrey A. Mundy
Robert S. Bowen
Publication date
01-07-2009
Publisher
Springer-Verlag
Published in
European Journal of Applied Physiology / Issue 5/2009
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-009-1077-7

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