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Mechanisms in motro recovery aftre spina cord injury by electrical stimulation induced muscle contraction

Research Project

Project/Area Number 18K10804
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59010:Rehabilitation science-related
Research InstitutionKawasaki Medical School

Principal Investigator

MIYAMOTO OSAMU  川崎医科大学, 医学部, 教授 (00253287)

Co-Investigator(Kenkyū-buntansha) 丸山 恵美  川崎医科大学, 医学部, 助教 (30792072)
氷見 直之  川崎医科大学, 医学部, 講師 (70412161)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords脊髄損傷 / 骨格筋収縮 / 電気刺激 / 皮質脊髄路 / 軸索再生 / BDNF / TrkB / ANA-12 / 皮質脊髄路再生 / フルオロゴールド / 運動機能回復 / リハビリテーション / 脊髄再生 / 運動療法 / 筋刺激 / 神経再生 / 神経栄養因子
Outline of Final Research Achievements

The involvement of neurotrophic factors such as brain-derived neurotrophic factor (BDNF) in functional recovery after spinal cord injury (SCI) by treadmill training has been suggested. However, the precise mechanism is poorly understood. To investigate the role of muscle contraction in motor function recovery after SCI, with a focus on BDNF. Percutaneous electrical muscle stimulation (ES) was applied to both hindlimbs of the SCI model rats. Motor function was assessed using BBB score, inclined plane test, and rotarod test. Significant improved motor function, axonal regeneration of corticospinal tract, and BDNF production in both muscle and spinal cord were observed by ES. While, these effects were suppressed by administration of the TrkB blocker. These results indicate that the increase of muscle activity induces motor recovery after SCI via BDNF-TrkB pathway.

Academic Significance and Societal Importance of the Research Achievements

現在、脊損患者に対しては運動療法を中心とするリハビリが行われているが中枢神経の再生能力は極めて低く、脊損患者の大部分に四肢麻痺や感覚障害などの永続的な後遺症が残る。一方、脊損後の運動が脊髄の再生を誘導し、これが運動機能の回復に寄与するという報告がなされているがそのメカニズムは明らかではない。本研究では、「脊損患者に対する運動リハビリ時の筋活動が逆行性に脊髄にシグナルを伝えて損傷部位の軸索再生や細胞新生を促進する」という仮説を立てこれを検証し、その分子メカニズムの一端を明らかにした。本研究結果により、BDNF-TrkB経路の活性化をターゲットとした新たな治療法の開発が大いに期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] The protective effect and mechanism of COA-Cl in acute phase after spinal cord injury2021

    • Author(s)
      Sakamoto I, Himi N, Hayashi N, Okabe N, Nakamura-Maruyama E, Tsukamoto I, Hasegawa T, Miyamoto O.
    • Journal Title

      Neuroscience Research

      Volume: - Pages: 114-121

    • DOI

      10.1016/j.neures.2020.10.003

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 新規核酸アナログCOA-Clによる脊髄損傷後の血管新生および機能回復効果2020

    • Author(s)
      坂本一晴、氷見直之、中村ー丸山恵美、萩原喜美子、林範人、長谷川徹、宮本修
    • Journal Title

      川崎医学会誌

      Volume: 46 Pages: 65-72

    • NAID

      120007000149

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improvement of motor function induced by skeletal muscle contraction in spinal cord-injured rats2019

    • Author(s)
      Hayashi N, Himi N, Nakamura-Maruyama E, Okabe N, Sakamoto I, Hasegawa T, Miyamoto O
    • Journal Title

      Spine J

      Volume: in press Issue: 6 Pages: 1094-1105

    • DOI

      10.1016/j.spinee.2018.12.012

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Constraint-induced movement therapy improves efficacy of taskspecific training after severe cortical stroke depending on the ipsilesional corticospinal projections2018

    • Author(s)
      Naohiko Okabe, Naoyuki Himi, Emi Nakamura-Maruyama, Norito Hayashi, Issei Sakamoto, Kazuhiko Narita, Toru Hasegawa, Osamu Miyamoto
    • Journal Title

      Experimental Neurology

      Volume: in press Pages: 108-120

    • DOI

      10.1016/j.expneurol.2018.04.006

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 脊髄損傷後の下腿骨格筋電気刺激による運動機能改善と脊髄求心路の関与2020

    • Author(s)
      林範人、氷見直之、長谷川徹、宮本修
    • Organizer
      第11回ニューロリハビリテーション学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 脊髄損傷後の下腿骨格筋電気刺激による運動機能改善と再生脊髄の組織学的評価2019

    • Author(s)
      林範人、氷見直之、長谷川徹、宮本修
    • Organizer
      第10回日本ニューロリハビテーション学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] ニューロリハビテーションの神経科学的基礎2019

    • Author(s)
      宮本修
    • Organizer
      第56回日本リハビリテーション医学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Improvement of motor function induced by muscle contraction in spinal cord injury rats2019

    • Author(s)
      Hayashi N, Himi N, Maruyama E, Okabe N, Sakamoto I, Hasegawa T, Miyamoto O
    • Organizer
      NASS(北米脊椎学会)2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Improvement of motor function induced by skeletal muscle contraction in spinal cord injury rats2019

    • Author(s)
      Hayashi N, Himi N, Nakamura-Maruyama E, Okabe N, Sakamoto I, Hasegawa T, Miyamoto O
    • Organizer
      9th Federation of the Asian Oceanian Physiological Societies Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Constraint-induced movement therapy improves efficacy of task-specific training after severe cortical stroke depending on the ipsilesional corticospinal projections2018

    • Author(s)
      Okabe N, Himi N, Nakamura-Maruyama E, Miyamoto O
    • Organizer
      第41回日本神経科学大会
    • Related Report
      2018 Research-status Report
  • [Remarks] 川崎医科大学・生理学2教室

    • URL

      http://www.kawasaki-m.ac.jp/physiology/

    • Related Report
      2020 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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