Upregulation of IL-1β/TGF-β1 and hypoxia relate to molecular mechanisms underlying immobilization-induced muscle contracture

Introduction: In this study we investigated the molecular mechanism underlying muscle contracture in rats. Methods: The rats were divided into immobilization and control groups, and soleus muscles of the right and left sides were selected for analyses. Results: The levels of CD11b and α-SMA protein, IL-1β, and TGF-β1 mRNA, and type I and III collagen protein and mRNA were significantly greater in the immobilization group than in the control group at all time-points. HIF-1α mRNA levels were significantly higher in the immobilization group at 4 weeks. Moreover, HIF-1α, α-SMA, and type I collagen levels were significantly higher at 4 weeks than at 1 and 2 weeks in the immobilization group. Conclusions: In the early stages of immobilization, upregulation of IL-1β/TGF-β1 via macrophages may promote fibroblast differentiation that could affect muscle contracture. The soleus muscle became hypoxic in the later stages of immobilization, suggesting that hypoxia influences the progression of muscle contracture.;開始ページ : 419;終了ページ : 427;元資料の権利情報 : © 2014 Wiley Periodicals, Inc.;元資料の権利情報 : This is the peer reviewed version of the following article: Muscle & Nerve, 52(3), pp.419-427; 2015, which has been published in final form at http://dx.doi.org/10.1002/mus.24558 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

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書名 Upregulation of IL-1β/TGF-β1 and hypoxia relate to molecular mechanisms underlying immobilization-induced muscle contracture
著作者等 American Association of Electrodiagnostic Medicine
American Association of Electromyography and Electrodiagnosis
本田 祐一郎
書名別名 IL-1β/TGF-β1の発現と低酸素状態の惹起は不動に伴う筋性拘縮の分子メカニズムに関与する
出版元 John Wiley and Sons, Inc.
刊行年月 1978-
ページ数 v.
大きさ 28 cm
ISSN 0148639X
NCID AA1104172X
AA00749357
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言語 英語
出版国 アメリカ合衆国
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