J L Wiedenman

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Mechanical overload leads to hypertrophy, increased type I fiber composition, and beta-myosin heavy chain (beta-MHC) induction in the fast-twitch plantaris muscle. To better understand the mechanism(s) involved in beta-MHC induction, we have examined inducible expression of transgenes carrying the simultaneous mutation of three DNA regulatory subregions(More)
The DNA regulatory element(s) involved in beta-myosin heavy chain (beta-MHC) induction by the physiological stimulus of mechanical overload have not been identified as yet. To delineate regulatory sequences that are required for mechanical overload induction of the beta-MHC gene, transgenic mouse lines were generated that harbor transgenes containing serial(More)
The hypertrophic responses of white fast-twitch muscle to mechanical overload has been investigated using transgenic mice. After 7 wk of overload, endogenous beta-myosin heavy chain (MHC) and slow myosin light chain 1 and 2 (SMLC1, SMLC2) protein were increased in the overloaded plantaris (OP) muscle compared with sham-operated control plantaris (CP)muscle.(More)
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