The adaptive response of MyoD family proteins in overloaded, regenerating and denervated rat muscles
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The adaptive response of MyoD family proteins in overloaded, regenerating and denervated rat muscles. / Sakuma, Kunihiro; Watanabe, Kimi; Sano, Mamoru; Uramoto, Isao; Sakamoto, Kei; Totsuka, Tsuyoshi.
In: Biochimica et Biophysica Acta - General Subjects, Vol. 1428, No. 2-3, 05.08.1999, p. 284-292.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - The adaptive response of MyoD family proteins in overloaded, regenerating and denervated rat muscles
AU - Sakuma, Kunihiro
AU - Watanabe, Kimi
AU - Sano, Mamoru
AU - Uramoto, Isao
AU - Sakamoto, Kei
AU - Totsuka, Tsuyoshi
PY - 1999/8/5
Y1 - 1999/8/5
N2 - Using Western blot analysis, we investigated whether the amount of myogenic regulatory factors differs in slow-type and fast-type muscles. In addition, we examined the adaptive response of myogenic regulatory factor protein in the overloaded rat muscles by the ablation of synergists, in the regenerating muscles following bupivacaine injection and in the denervated muscle. The amount of myogenin protein in the slow-type muscle was markedly greater. In contrast, the proteins MyoD and Myf-5 were selectively accumulated in the fast-type muscles. A gradual down-regulation of MyoD and Myf-5 proteins was detected in the denervated fast-type muscles, but not in the myogenin protein content. A rapid down-regulation of myogenic regulatory factor protein was observed both of the mechanically overloaded and in the regenerating muscles. These results indicate that the fast-type-specific gene expression in muscle is modulated by MyoD and Myf-5 proteins and suggest that myogenin protein plays an important role in the reconstruction of damaged neuromuscular connections. Copyright (C) 1999 Elsevier Science B.V.
AB - Using Western blot analysis, we investigated whether the amount of myogenic regulatory factors differs in slow-type and fast-type muscles. In addition, we examined the adaptive response of myogenic regulatory factor protein in the overloaded rat muscles by the ablation of synergists, in the regenerating muscles following bupivacaine injection and in the denervated muscle. The amount of myogenin protein in the slow-type muscle was markedly greater. In contrast, the proteins MyoD and Myf-5 were selectively accumulated in the fast-type muscles. A gradual down-regulation of MyoD and Myf-5 proteins was detected in the denervated fast-type muscles, but not in the myogenin protein content. A rapid down-regulation of myogenic regulatory factor protein was observed both of the mechanically overloaded and in the regenerating muscles. These results indicate that the fast-type-specific gene expression in muscle is modulated by MyoD and Myf-5 proteins and suggest that myogenin protein plays an important role in the reconstruction of damaged neuromuscular connections. Copyright (C) 1999 Elsevier Science B.V.
KW - Motor denervation
KW - Muscle hypertrophy
KW - Muscle regeneration
KW - Myogenic regulatory factor
UR - http://www.scopus.com/inward/record.url?scp=0032781215&partnerID=8YFLogxK
U2 - 10.1016/S0304-4165(99)00086-0
DO - 10.1016/S0304-4165(99)00086-0
M3 - Journal article
C2 - 10434046
AN - SCOPUS:0032781215
VL - 1428
SP - 284
EP - 292
JO - B B A - General Subjects
JF - B B A - General Subjects
SN - 0304-4165
IS - 2-3
ER -
ID: 239779514