Downhill running in rats: influence on neutrophils, macrophages, and MyoD+ cells in skeletal muscle

The accumulation of neutrophils and macrophages, as well as the activation of satellite cells, are early events following skeletal muscle injury. We examined the temporal relationship between changes in neutrophils, macrophages, and MyoD protein, a marker of satellite cell activation, after injuriou...

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Veröffentlicht in:	European journal of applied physiology 2003-11, Vol.90 (5-6), p.633-638
Hauptverfasser:	Tsivitse, Susan K, McLoughlin, Thomas J, Peterson, Jennifer M, Mylona, Eleni, McGregor, Stephen J, Pizza, Francis X
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Creatine Kinase - blood Creatine Kinase - pharmacology Inflammation Macrophages - immunology Male Muscle, Skeletal - immunology Muscle, Skeletal - injuries Muscle, Skeletal - pathology Muscular system Neutrophil Infiltration Physical Conditioning, Animal Rats Rats, Wistar Rodents Satellite Cells, Skeletal Muscle - immunology Time Factors
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Zusammenfassung:	The accumulation of neutrophils and macrophages, as well as the activation of satellite cells, are early events following skeletal muscle injury. We examined the temporal relationship between changes in neutrophils, macrophages, and MyoD protein, a marker of satellite cell activation, after injurious exercise. Male rats ( n=47) performed an intermittent downhill (-16% grade) running (17 m/min) protocol and the solei were obtained at 0, 2, 6, 24, 48, or 72 h post-exercise. Neutrophils, macrophages (ED1 and ED2), and MyoD+ cells were determined in muscle cross sections using immunohistochemistry. Downhill running increased ( P
ISSN:	1439-6319 1439-6327
DOI:	10.1007/s00421-003-0909-0