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Verification of neural network reconstruction in the swallowing related higher brain induced by stomatognathic motor learning

Research Project

Project/Area Number 19K10243
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionNiigata University

Principal Investigator

Magara Jin  新潟大学, 医歯学総合病院, 講師 (90452060)

Co-Investigator(Kenkyū-buntansha) 井上 誠  新潟大学, 医歯学系, 教授 (00303131)
増田 裕次  松本歯科大学, 総合歯科医学研究所, 教授 (20190366)
堀 一浩  新潟大学, 医歯学系, 准教授 (70379080)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords摂食嚥下障害 / 口腔機能低下症 / 咀嚼運動 / 嚥下運動 / 経頭蓋磁気刺激 / 運動誘発電位 / 神経可塑性変化 / 口腔運動 / 運動学習 / 顎口腔運動 / 神経可塑性
Outline of Research at the Start

摂食嚥下リハビリテーションの臨床において、顎口腔領域の運動トレーニングは、口腔機能の改善のみならず嚥下機能の改善に寄与することがある。本研究は、この改善機序として口腔と嚥下運動に関連した神経ネットワークに再構築が生じていると仮説、検証することを目的とした。本研究結果から、口腔と嚥下運動の機能連関の神経メカニズムや、口腔機能低下症に対するアプローチなどについて、神経生理学的な根拠を示すことができる。

Outline of Final Research Achievements

The present study assessed the effect of stomatognathic movement on swallowing-related neural pathways in humans. In the first experiment, seventeen healthy volunteers participated and received transcranial magnetic stimulation (TMS) to evaluate cortico-pharyngeal and cortico-lip motor-evoked potentials (MEPs). Then, they performed lip close training tasks and subsequently underwent remeasurement of lip MEPs. There was a certain relationship between the changes of success rate in lip training and the percentage change in the amplitude of lip MEPs. In the second experiment, twenty healthy volunteers participated and underwent baseline TMS to evaluate cortico-pharyngeal and cortico-masseter MEPs. Next, they performed a chewing task and a swallowing task. As a result, pharyngeal MEPs were significantly higher after the swallowing task than after the chewing task. This implies that chewing movements suppress swallowing-related activity in the pharyngeal motor circuit.

Academic Significance and Societal Importance of the Research Achievements

本研究は、摂食嚥下リハビリテーションにおける口腔機能運動トレーニングが摂食嚥下関連神経ネットワークを如何に再構築するかを検証する目的で実施された。口唇運動や、咀嚼運動によって、顎口腔領域の運動関連の神経自体には一定の興奮性変化が認められたが、嚥下の運動関連神経ネットワークには明らかな興奮性の変化は示さなかった。しかし、咀嚼運動後には、嚥下運動に関連する皮質下行性入力が抑制的に制御されていることが認められた。このとこは、食品が安全に咀嚼され嚥下される際の、食塊の移送と嚥下のタイミングの協調に関わっている可能性があり、咀嚼と嚥下運動の神経学的な相互の機能の関わりを示すものである。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 2020 2019 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Remarks (2 results)

  • [Journal Article] Chewing modulates the human cortical swallowing motor pathways2022

    • Author(s)
      Jin Magara, Wakana Onuki, Reiko Ita, Takanori Tsujimura, Makoto Inoue
    • Journal Title

      Physiology & Behavior

      Volume: 249 Pages: 113763-113763

    • DOI

      10.1016/j.physbeh.2022.113763

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lasting modulation of human cortical swallowing motor pathways following thermal tongue stimulation2020

    • Author(s)
      Magara Jin、Watanabe Masahiro、Tsujimura Takanori、Hamdy Shaheen、Inoue Makoto
    • Journal Title

      Neurogastroenterology & Motility

      Volume: 33 Issue: 1

    • DOI

      10.1111/nmo.13938

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 生体記録からみた咀嚼嚥下機能連関における神経制御.シンポジウム つながる:口腔から咽頭へ- 咀嚼と嚥下 -2021

    • Author(s)
      真柄 仁
    • Organizer
      第26・27回合同学術大会日本摂食嚥下リハビリテーション学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Effect of chewing on modulation of pharyngeal motor excitability2021

    • Author(s)
      Jin Magara,Reiko Ita,Takanori Tsujimura, Makoto Inoue
    • Organizer
      11th ESSD Congress, online conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modulation of swallowing related motor evoked potentials induced by interferential current stimulation2021

    • Author(s)
      Jin Magara, Eri Takei, Yuhei Tsutsui, Takanori Tsujimura, Makoto Inoue
    • Organizer
      2nd World Dysphagia Summit
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 生体記録と食塊物性から見る咀嚼と嚥下の機能連関2020

    • Author(s)
      4)真柄 仁
    • Organizer
      日本咀嚼学会第31回学術大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Physiological properties of hyoid muscles during continuous tongue lift movement accompanied by tongue pressure measurement2020

    • Author(s)
      Magara J, Sunada Y, Tsujimura T, Ono K, Inoue M
    • Organizer
      nternational Collaborative Symposium on “Development of Human Resources in Practical Oral Health and Treatment”, Discovery Kartika Plaza Hotel (Bali, Indonesia), 2020.2.10-12
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Long-lasting modulation of human cortical swallowing motor pathways following thermal tongue stimulation2019

    • Author(s)
      Magara J, Watanabe M, Tsujimura T, Inoue M
    • Organizer
      9th ESSD congress, Aula Der Wissenschaften (Vienna) Austria, 2019.9.20-21
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 口腔の感覚刺激がもたらす嚥下運動の変調効果.歯科補綴治療に関係した感覚機能の解明に関する将来的展望2019

    • Author(s)
      真柄 仁
    • Organizer
      日本補綴歯科学会第128回学術大会 イブニングセッション,札幌コンベンションセンター(北海道・札幌市),2019年5月10-12日
    • Related Report
      2019 Research-status Report
  • [Remarks] Researchmap

    • URL

      https://researchmap.jp/jin-m

    • Related Report
      2019 Research-status Report
  • [Remarks] 新潟大学大学院医歯学総合研究科 摂食嚥下リハビリテーション学分野 HP

    • URL

      https://www5.dent.niigata-u.ac.jp/~dysphagia/achievement.html

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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