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- W2102100993 abstract "We have used the mdx mice strain (C57BL/10ScSn-mdx) as an experimental subject for the study of reiterative skeletal muscle necrosis-regeneration with basement membrane preservation. In young mdx muscle, by means of Hematoxylin-Eosin staining, different types of degenerative-regenerative groups (DRG) can be recognized and assigned to a defined muscle regeneration phase. To evaluate the expression of known key-regulatory genes in muscle regeneration, we have applied Laser Capture Microdissection technique to obtain tissue from different DRGs encompassing the complete skeletal muscle regenerative process. The expression of MyoD, Myf-5 and Myogenin showed a rapid increase in the first two days post-necrosis, which were followed by MRF4 expression, when newly regenerating fibers started to appear (3-5days post-necrosis). MHCd mRNA levels, undetectable in mature non-injured fibers, increased progressively from the first day post-necrosis and reached its maximum level of expression in DRGs showing basophilic regenerating fibers. TGFbeta-1 mRNA expression showed a prompt and strong increase following fiber necrosis that persisted during the inflammatory phase, and progressively decreased when new regenerating fibers began to appear. In contrast, IGF-2 mRNA expression decreased during the first days post-necrosis but was followed by a progressive rise in its expression coinciding with the appearance of the newly formed myofibers, reaching the maximum expression levels in DRGs composed of medium caliber basophilic regenerating myofibers (5-7 days post-necrosis). mdx degenerative-regenerative group typing, in conjunction with laser microdissection-based gene expression analysis, opens up a new approach to the molecular study of skeletal muscle regeneration." @default.
- W2102100993 created "2016-06-24" @default.
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- W2102100993 date "2007-10-01" @default.
- W2102100993 modified "2023-10-14" @default.
- W2102100993 title "Laser microdissection-based expression analysis of key genes involved in muscle regeneration in mdx mice" @default.
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- W2102100993 doi "https://doi.org/10.1016/j.nmd.2007.05.007" @default.
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