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2018 Fiscal Year Annual Research Report

Functional interaction of neural mechanism between chew and swallow

Research Project

Project/Area Number 16H05522
Research InstitutionNiigata University

Principal Investigator

井上 誠  新潟大学, 医歯学系, 教授 (00303131)

Co-Investigator(Kenkyū-buntansha) 辻村 恭憲  新潟大学, 医歯学系, 准教授 (00548935)
伊藤 加代子  新潟大学, 医歯学総合病院, 助教 (80401735)
真柄 仁  新潟大学, 医歯学総合病院, 講師 (90452060)
Project Period (FY) 2016-04-01 – 2019-03-31
Keywords咀嚼 / 嚥下 / 歯科 / リハビリテーション
Outline of Annual Research Achievements

本研究は,ヒトおよび動物を対象とした実験を並行して行っている.
ヒト実験では,嚥下誘発に関わる末梢刺激やその認知との間にどのような相互作用をもつか検討する目的で,種々の咀嚼条件が運動様式にどのような違いをもたらすかについて昨年に引き続き生理学的に解明し,1)自由咀嚼,時間規定咀嚼,回数規程咀嚼などを設定しても咀嚼時の咬筋活動には大きな違いはないものの,食塊形成や食塊移送はお互いに異なり,続く嚥下運動は自然咀嚼の時が最もその負荷が小さいことや同じ食品を摂取する際の咀嚼時間は個人間で大きく異なるが,それは咀嚼能力に依存するのではなく,咀嚼時の食塊移送や食習慣に依存するものであることが示唆される基礎データを得た(Ahiga et al, Scientific Rep, 2019他は投稿準備中).動物実験においては,嚥下運動誘発に関わる末梢の受容機構として,種々のイオンチャネルに注目し,機械刺激に対してはENaCの関与,酸刺激に対してはTRPV1の関与,炭酸刺激に対してはASIC3の関与が考えられることを明らかにした(投稿準備中).
一方,本研究期間中に,咀嚼に伴う高次脳への効果を検証するにいたらなかった.動物実験においては,末梢から中枢に至る,あるいは中枢内での末梢と上位脳からの入力の相互作用を明らかにするまでには至っていない.引き続き研究を進めていく.

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

  • Research Products

    (13 results)

All 2019 2018

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results) Presentation (10 results) (of which Int'l Joint Research: 9 results,  Invited: 2 results)

  • [Journal Article] Cold thermal oral stimulation produces immediate excitability in human pharyngeal motor cortex2018

    • Author(s)
      Magara J.、Watanabe M.、Tsujimura T.、Hamdy S.、Inoue M.
    • Journal Title

      Neurogastroenterology & Motility

      Volume: 30 Pages: e13384~e13384

    • DOI

      10.1111/nmo.13384

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of peripherally and cortically evoked swallows on jaw reflex responses in anesthetized rabbits2018

    • Author(s)
      Suzuki Taku、Yoshihara Midori、Sakai Shogo、Tsuji Kojun、Nagoya Kouta、Magara Jin、Tsujimura Takanori、Inoue Makoto
    • Journal Title

      Brain Research

      Volume: 1694 Pages: 19~28

    • DOI

      10.1016/j.brainres.2018.05.002

    • Peer Reviewed
  • [Journal Article] Involvement of hypoglossal and recurrent laryngeal nerves on swallowing pressure2018

    • Author(s)
      Tsujimura Takanori、Suzuki Taku、Yoshihara Midori、Sakai Shogo、Koshi Naomi、Ashiga Hirokazu、Shiraishi Naru、Tsuji Kojun、Magara Jin、Inoue Makoto
    • Journal Title

      Journal of Applied Physiology

      Volume: 124 Pages: 1148~1154

    • DOI

      10.1152/japplphysiol.00944.2017

    • Peer Reviewed
  • [Presentation] Continuous laryngeal TRPV1 activation modulates swallowing initiation in anesthetized rats2019

    • Author(s)
      Midori Yoshihara, Takanori Tsujimura, Makoto Inoue
    • Organizer
      The 9th FAOPS congress in conjunction with the 96th Annual meeting of the Physiological Society of Japan
    • Int'l Joint Research
  • [Presentation] Exploring the effects of thermal tongue stimulation on cortical excitability in the human pharyngeal motor pathways2019

    • Author(s)
      Jin Magara, Masahiro Watanabe, Takanori Tsujimura, Makoto Inoue
    • Organizer
      Dysphagia Research Society (DRS) 27th Annual Meeting
    • Int'l Joint Research
  • [Presentation] Hypoglossal and recurrent laryngeal nerves are involved in swallowing pressure generation in anesthetized rats2018

    • Author(s)
      Takanori Tsujimura, Makoto Inoue
    • Organizer
      Neuroscience 2018
    • Int'l Joint Research
  • [Presentation] Modulation of initiation of swallows evoked by continuous laryngeal TRPV1 activation in anesthetized rats2018

    • Author(s)
      Midori Yoshihara, Taku Suzuki, Kouta Nagoya, Takanori Tsujimura, Makoto Inoue
    • Organizer
      Neuroscience 2018
    • Int'l Joint Research
  • [Presentation] Measurement of hyoid muscle activity and hyoid bone position during tongue lift movement2018

    • Author(s)
      Jin Magara, Masahiro Watanabe, Takanori Tsujumura, Shaheen Hamdy, Makoto Inoue
    • Organizer
      8th ESSD congress
    • Int'l Joint Research
  • [Presentation] Influence of age on eating behaviors and bolus properties of steamed rice2018

    • Author(s)
      Eri Takei, Rumiko Maeda, Jin Magara, Takanori Tsujimura, Ryosuke Takeishi, Makoto Inoue
    • Organizer
      8th ESSD congress
    • Int'l Joint Research
  • [Presentation] Effect of continuous laryngeal TRPV1 activation on initiation of swallowing in anesthetized rats2018

    • Author(s)
      Midori Yoshihara, Taku Suzuki, Kouta Nagoya, Naru Shiraishi, Jin Magara, Takanori Tsujimura, Makoto Inoue
    • Organizer
      第23回日本摂食嚥下リハビリテーション学会学術大会
  • [Presentation] ENaC is involved in the initiation of mechanically evoked swallow2018

    • Author(s)
      Takanori Tsujimura, Midori Yoshihara, Taku Suzuki, Kouta Nagoya, Makoto Inoue
    • Organizer
      96th General Session of the IADR
    • Int'l Joint Research
  • [Presentation] Involvement of hypoglossal and recurrent laryngeal nerves on swallowing pressure2018

    • Author(s)
      Takanori Tsujimura, Makoto Inoue
    • Organizer
      The third Japan-Korea Joint Symposium
    • Int'l Joint Research / Invited
  • [Presentation] Latest Research on the Association Between Deglutition and Aging2018

    • Author(s)
      Makoto Inoue
    • Organizer
      2018 IADR/PER
    • Int'l Joint Research / Invited

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Published: 2019-12-27  

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