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Molecular mechanisms of electrical stimulation for prevention of muscle atrophy

Research Project

Project/Area Number 20H04041
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 59010:Rehabilitation science-related
Research InstitutionNippon Sport Science University

Principal Investigator

Nakazato Koichi  日本体育大学, 保健医療学部, 教授 (00307993)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Keywords骨格筋萎縮 / 電気刺激 / ミトコンドリア / リボソーム / 骨格筋電気刺激 / 筋萎縮 / 周波数 / 萎縮抑制 / 悪液質 / 廃用 / サルコリピン / 単収縮
Outline of Research at the Start

骨格筋量維持は様々な臨床現場で重要視される。骨格筋電気刺激(EMS)は継続的な運動実施困難者にとって骨格筋萎縮予防のための福音となる。骨格筋萎縮予防に対するEMSの効果は主に筋タンパク質合成亢進の亢進とされ、骨格筋萎縮の直接的な抑制ではないため対処療法的であった。本研究は骨格筋萎縮予防に最適なEMS条件を模索し、骨格筋萎縮機序の学術的理解とEMSを用いた骨格筋萎縮予防の原因療法開発の両方を目指す。

Outline of Final Research Achievements

The prevention of skeletal muscle atrophy, including sarcopenia, is an urgent issue. Skeletal muscle electrical stimulation (EMS) may effectively prevent skeletal muscle atrophy, especially for those who have difficulty exercising. However, the molecular mechanism is not necessarily clear. In this study, we found that (1) low-frequency EMS induces skeletal muscle contraction, mainly consisting of twitch contractions, and suppresses muscle atrophy caused by denervation, suggesting an increase in mitochondrial biosynthesis and quantity as the molecular mechanism. (2) High-frequency EMS-induced skeletal muscle contractions, mainly tetanic contractions, which suppressed muscle atrophy due to denervation as in the low-frequency study. However, it was concluded that the molecular basis for this was an increase in ribosome quantity, not mitochondria.

Academic Significance and Societal Importance of the Research Achievements

加齢や病気によって筋肉が失われることは力の低下につながり歩行などの日常動作を困難にします。加齢や病気によって筋肉が失われるような人はそもそも筋肉量を維持するための運動も困難である場合が多く、運動の代わりになる骨格筋電気刺激は有望視されています。ただしその処方は基礎研究が乏しいのが現状です。電気刺激は電気の周波数(ヘルツ)によって異なり、低周波ではぴくっとした収縮、高周波では力強い収縮が導かれます。今回の研究では低周波、高周波ともに筋萎縮効果があることがわかりましたが、そのメカニズムが異なることも明らかになりました。本研究の成果は根拠に基づいた電気刺激の処方につながると言えます。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (15 results)

All 2022 2021 2020 Other

All Journal Article (13 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 12 results,  Open Access: 5 results) Presentation (1 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Low-frequency electrical stimulation of bilateral hind legs by belt electrodes is effective for preventing denervation-induced atrophies in multiple skeletal muscle groups in rats2022

    • Author(s)
      Uno Hiroyuki、Kamiya Shohei、Akimoto Ryuji、Hosoki Katsu、Tadano Shunta、Kouzaki Karina、Tamura Yuki、Kotani Takaya、Isemura Mako、Nakazato Koichi
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1

    • DOI

      10.1038/s41598-022-25359-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Percutaneous electrical stimulation-induced muscle contraction prevents the decrease in ribosome RNA and ribosome protein during pelvic hindlimb suspension2022

    • Author(s)
      Kotani Takaya、Tamura Yuki、Kouzaki Karina、Kato Hikaru、Isemura Mako、Nakazato Koichi
    • Journal Title

      Journal of Applied Physiology

      Volume: 133 Issue: 4 Pages: 822-833

    • DOI

      10.1152/japplphysiol.00204.2022

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of endurance training on the expression of host proteins involved in SARS‐CoV‐2 cell entry in C57BL/6J mouse2021

    • Author(s)
      Tamura Yuki、Jee Eunbin、Kouzaki Karina、Kotani Takaya、Nakazato Koichi
    • Journal Title

      Physiological Reports

      Volume: 9 Issue: 17

    • DOI

      10.14814/phy2.15014

    • Related Report
      2021 Annual Research Report
  • [Journal Article] c-Myc overexpression increases ribosome biogenesis and protein synthesis independent of mTORC1 activation in mouse skeletal muscle2021

    • Author(s)
      Mori Takahiro、Ato Satoru、Knudsen Jonas R.、Henriquez-Olguin Carlos、Li Zhencheng、Wakabayashi Koki、Suginohara Takeshi、Higashida Kazuhiko、Tamura Yuki、Nakazato Koichi、Jensen Thomas E.、Ogasawara Riki
    • Journal Title

      American Journal of Physiology-Endocrinology and Metabolism

      Volume: 321 Issue: 4 Pages: E551-E559

    • DOI

      10.1152/ajpendo.00164.2021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Eccentric exercise causes delayed sensory nerve conduction velocity but no repeated bout effect in the flexor pollicis brevis muscles2021

    • Author(s)
      Ochi Eisuke、Ueda Hisashi、Tsuchiya Yosuke、Nakazato Koichi
    • Journal Title

      European Journal of Applied Physiology

      Volume: 121 Issue: 11 Pages: 3069-3081

    • DOI

      10.1007/s00421-021-04773-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The effect of repeated bouts of electrical stimulation-induced muscle contractions on proteolytic signaling in rat skeletal muscle2021

    • Author(s)
      Kotani T, Takegaki J, Tamura Y, Kouzaki K, Nakazato K, Ishii N.
    • Journal Title

      Physiological Reports

      Volume: in press Issue: 9 Pages: 14842-14842

    • DOI

      10.14814/phy2.14842

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Weight Category-dependent Trunk Muscle Strength and its Relation with LBP in Elite Judokas2020

    • Author(s)
      Okada Takashi、Hakkaku Takayoshi、Iwai Kazunori、Nakazato Koichi
    • Journal Title

      Sports Medicine International Open

      Volume: 05 Issue: 01 Pages: E14-E21

    • DOI

      10.1055/a-1303-2741

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The distribution of eukaryotic initiation factor 4E after bouts of resistance exercise is altered by shortening of recovery periods2020

    • Author(s)
      Takegaki Junya、Ogasawara Riki、Kouzaki Karina、Fujita Satoshi、Nakazato Koichi、Ishii Naokata
    • Journal Title

      The Journal of Physiological Sciences

      Volume: 70 Issue: 1 Pages: 54-54

    • DOI

      10.1186/s12576-020-00781-y

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ciliary Neurotrophic Factor Receptor rs41274853 Polymorphism Is Associated With Weightlifting Performance in Japanese Weightlifters2020

    • Author(s)
      Homma Hiroki、Kobatake Naoyuki、Sekimoto Yusuke、Saito Mika、Mochizuki Yukina、Okamoto Takanobu、Nakazato Koichi、Nishiyama Tetsunari、Kikuchi Naoki
    • Journal Title

      Journal of Strength and Conditioning Research

      Volume: 34 Issue: 11 Pages: 3037-3041

    • DOI

      10.1519/jsc.0000000000003750

    • NAID

      120007096948

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Inorganic Iron Supplementation Rescues Hematological Insufficiency Even Under Intense Exercise Training in a Mouse Model of Iron Deficiency with Anemia2020

    • Author(s)
      Sumi Koichiro、Munakata Kinuyo、Konno Saori、Ashida Kinya、Nakazato Koichi
    • Journal Title

      Biological Trace Element Research

      Volume: in press Issue: 8 Pages: 2945-2960

    • DOI

      10.1007/s12011-020-02402-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrically stimulated contractile activity-induced transcriptomic responses and metabolic remodeling in C2C12 myotubes: twitch vs. tetanic contractions2020

    • Author(s)
      Tamura Yuki、Kouzaki Karina、Kotani Takaya、Nakazato Koichi
    • Journal Title

      American Journal of Physiology-Cell Physiology

      Volume: 319 Issue: 6 Pages: C1029-C1044

    • DOI

      10.1152/ajpcell.00494.2019

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of blackcurrant extract on arterial functions in older adults: A randomized, double-blind, placebo-controlled, crossover trial2020

    • Author(s)
      Okamoto Takanobu、Hashimoto Yuto、Kobayashi Ryota、Nakazato Koichi、Willems Mark Elisabeth Theodorus
    • Journal Title

      Clinical and Experimental Hypertension

      Volume: 42 Issue: 7 Pages: 640-647

    • DOI

      10.1080/10641963.2020.1764015

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Repeated stretch-shortening contraction of the triceps surae attenuates muscle atrophy and liver dysfunction in a rat model of inflammation.2020

    • Author(s)
      Sumi K, Ashida K, Nakazato K.
    • Journal Title

      Exp. Physiol.

      Volume: - Issue: 7 Pages: 1111-1123

    • DOI

      10.1113/ep088622

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 骨格筋形態・代謝適応制御の分子運動生理学 その黎明期から未来へ 遺伝子多型研究が分子運動生理学に果たす役割2022

    • Author(s)
      中里浩一
    • Organizer
      日本体力医学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Remarks] 日本体育大学体育研究所

    • URL

      https://www.nittai.ac.jp/kenkyujo/index.html

    • Related Report
      2020 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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