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2001 Fiscal Year Final Research Report Summary

Study on the mechanism of atrophy, hypertrophy and regeneration of the skeletal muscle

Research Project

Project/Area Number 12832031
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

KAWAMATA Seiichi  Institute of Health Sciences, Faculty of Medicine, Hiroshima University, Professor, 医学部, 教授 (30127641)

Project Period (FY) 2000 – 2001
Keywordsskeletal muscle / atrophy / cast immobilization / tenotomy / rehabilitation / hypertrophy / synergists ablation / rat
Research Abstract

CAUSES OF MUSCLE ATROPHY : Cast immobilization of the ankle joint resulted in the atrophy of the gastrocnemius, soleus and plantaris muscles of the rat. The decrease of muscle wet weight was 22% at 1 week and 23% at 2 weeks (22% at 1 week ; 23% at 2 weeks) after immobilization, respectively. Atrophy of these muscles was enhanced when the joint was immobilized at plantar flexion, whereas alleviated at dorsal flexion. Tenotomy produced muscle atrophy (9% at 1 week ; 20% at 2 weeks). Denervation resulted in progressive and serve muscle atrophy (31% at 1 week ; 49% at 2 weeks).
MUSCLE RECOVERY : The atrophied muscles began to reverse after cast removal or reinnervation. Thirty min of swimming once a day for 2 weeks significantly promoted muscle recovery. Prevention of muscle atrophy and promotion of hypertrophy was attempted by muscle stimulation. Muscle contraction for 30 min, but not 15 min, by continuous nerve stimulation produced muscle injury.
CONCLUSIONS : Skeletal muscles rapidly atrophied after immobilization, tenotomy and denervation. Muscle atrophy can be minimized when muscles are loaded with tension. An early start of rehabilitation is effective. However, strong exercise may lead to muscle injury.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 榊間春利, 甲斐悟, 小澤淳也, 川真田聖一: "ギプス固定によるラット下腿の萎縮と回復"理学療法学. 27(5). 174-179 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sakakima H, Kawamata S, Kai S, Ozawa J, Matsuura N.: "Effects of short-term denervation and subsequent reinnervation on motor endplates and the soleus muscle in the rat"Archives of Histology and Cytology. 63(5). 495-506 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 榊間春利, 甲斐悟, 小澤淳也, 吉田義弘, 坂江清弘, 川真田聖一: "関節固定によるラット廃用性萎縮筋の回復過程"鹿児島大学医学部保健学科紀要. 11(2). 161-166 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuura N, Kawamata S, Ozawa J, Kai S, Sakakima H, Abiko S: "Injury and repair of the soleus muscle after electrical stimulation of the sciatic nerve in the rat"Archives of Histology and Cytology. 64(4). 393-400 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shinohara H, Taniguchi Y, Kominami R, Yasutaka S, Kawamata S: "The lacrimal fascia redefined"Clinical Anatomy. 14(6). 401-405 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kawamata S, Murai M: "Fine structural and functional development of the heart in the chick embryo with special reference to the onset of heartbeat"広島大学保健学ジャ-ナル. 1(1). 54-59 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sakakima H, Kai S, Ozawa J, Kawamata S: "The atrophy and recovery after cast immobilization in the rat leg muscles (in Japanese)"Rigakuryohogaku. 27 (5). 174-179 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sakakima H, Kawamata S, Kai S, Ozawa J, Matsuura N: "Effects of short-term denervation and subsequent reinnervation on motor endplates and the soleus muscle"Archives of Histology and Cytology. 63 (5). 495-506 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sakakima H, Kai S, Ozawa J, Yoshida Y, Sakae K, Kawamata S: "The recovery process of the atrophied muscles after cast immobilization in the rat (in Japanese)"Proceedings of School of Health Sciences Kagoshima University. 11 (2). 161-166 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsuura N, Kawamata S, Ozawa J, Kai S, Sakakima H, Abiko S: "Injury and repair of the soleus muscle after electrical stimulation of the sciatic nerve in the rat"Archives of Histology and Cytology. 64 (4). 393-400 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinohra H, Taniguchi Y, Kominami R, Yasutaka S, Kawamata S: "The lacrimal fascia redefined"Clinical Anatomy. 14 (6). 401-405 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kawamata S, Murai M: "Fine structural and functional development of the heart in the chick embryo with special reference to the onset of heartbeat"Joural of Health Sciences Hiroshima University. 1 (1). 54-59 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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