Journal
EXPERIMENTAL GERONTOLOGY
Volume 35, Issue 6-7, Pages 711-719Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0531-5565(00)00151-0
Keywords
human; skeletal muscle; satellite cell; telomere length; proliferation; regeneration
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Regeneration of muscle fibers following damage requires activation of quiescent satellite cells, their proliferation and finally their differentiation and fusion into multinucleated myotubes, which after maturation will replace the damaged fiber. The regenerative potential of human skeletal muscle will be determined, at least partly, by the proliferative capacity of the satellite cells. In this study, we have measured the proliferative life span of human satellite cells until they reach senescence. These analyses were performed on cell populations isolated from old and young donors as well as from one child suffering from Duchenne muscular dystrophy, where extensive regeneration had occurred. In order to see if there are any age-related changes in the myogenic program we have also compared the program of myogenic differentiation expressed by satellite cells from these subjects at different stages of their proliferative lifespan. (C) 2000 Elsevier Science Inc. All rights reserved.
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