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Data base of TRP channels involving triggering of swallowing reflex and prevention of aspiration

Research Project

Project/Area Number 19K05871
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionMatsumoto Dental University

Principal Investigator

Ando Hiroshi  松本歯科大学, 歯学部, 准教授 (30312094)

Co-Investigator(Kenkyū-buntansha) Hossain M.Zakir  松本歯科大学, 歯学部, 助教 (40792445)
北川 純一  松本歯科大学, 歯学部, 教授 (50373006)
海野 俊平  松本歯科大学, 歯学部, 講師 (80418920)
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嚥下 / TRPチャネル / 喉頭 / 咽頭 / 上喉頭神経 / TRPA1 / TRPV1 / TRPM8 / TRPV4 / ASIC3 / Piezo1 / Piezo2 / 誤嚥
Outline of Research at the Start

現在日本において高齢者の増加に伴い、嚥下機能の低下から誤嚥性肺炎による死亡が増加している。これまでに私達は、咽頭・喉頭の感覚を支配する上喉頭神経に発現するTRPチャネルのTRPV1とTRPM8が嚥下誘発に関与していることを明らかにした。しかし、TRPチャネルには、嚥下誘発への関与について調べられていないチャネルが数多く残されている。本研究では以下の方法により、誤嚥を防ぐための食品開発につながる嚥下誘発機能をもつTRPチャネルのデータベースを構築する。
1)上喉頭神経におけるTRPチャネルの発現分布を免疫組織学的方法により調べる。
2)TRPチャネル阻害剤を用いて上喉頭神経応答および嚥下誘発の変調を検討する。

Outline of Final Research Achievements

TRPA1s were predominantly expressed on thin nerve fibres and fibroblast-like cells in the SLN-innervated regions and on small to medium-sized SLN-afferents in the NPJc. Topical application of a chemical agonist for TRPA1, allyl isothiocyanate (AITC), in the regions triggered swallowing reflexes which were significantly attenuated by prior application of a TRPA1 antagonist. The topical application of cold AITC (4°C) very briefly reduced the on-site temperature to <17°C (temperature at which TRPA1s can be activated) but failed to augment the AITC-induced reflexes. TRPA1s function as chemosensors, but not as cold sensors or mechanosensors, to trigger the swallowing reflex. Brief application of a cold stimulus in the regions exerts no effect on triggering the reflex because of the rapid recovery of on-site temperature. Conversely, prolonged application of a cold stimulus delays/prevents triggering of the reflex because of the development of cold anaesthesia.

Academic Significance and Societal Importance of the Research Achievements

飲食物を飲み込む時の咽頭・喉頭領域の感覚は上喉頭神経に受容される。この神経においてTRPA1チャネルが発現することを明らかにした。さらに、TRPA1の作動薬が嚥下を誘発することを明らかにした。これらの結果から咽頭・喉頭領域における感覚形成および嚥下誘発の神経機構の一端を明らかにすることができた。この成果は、高齢化社会を迎えた日本が抱えている社会問題でもある嚥下障害を解決するための、摂食嚥下リハビリテーションや嚥下食開発に貢献できる。

Report

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

    (12 results)

All 2022 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] TRPA1s act as chemosensors but not as cold sensors or mechanosensors to trigger the swallowing reflex in rats2022

    • Author(s)
      Hossain Mohammad Zakir、Ando Hiroshi、Unno Shumpei、Kitagawa Junichi
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 3431-3431

    • DOI

      10.1038/s41598-022-07400-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Targeting Peripherally Restricted Cannabinoid Receptor 1, Cannabinoid Receptor 2, and Endocannabinoid-Degrading Enzymes for the Treatment of Neuropathic Pain Including Neuropathic Orofacial Pain2020

    • Author(s)
      Hossain Mohammad Zakir、Ando Hiroshi、Unno Shumpei、Kitagawa Junichi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 21 Issue: 4 Pages: 1423-1423

    • DOI

      10.3390/ijms21041423

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Targeting Chemosensory Ion Channels in Peripheral Swallowing-Related Regions for the Management of Oropharyngeal Dysphagia2020

    • Author(s)
      Hossain Mohammad Zakir、Ando Hiroshi、Unno Shumpei、Kitagawa Junichi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 21 Issue: 17 Pages: 6214-6214

    • DOI

      10.3390/ijms21176214

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Functional involvement of acid‐sensing ion channel 3 in the swallowing reflex in rats2019

    • Author(s)
      Hossain Mohammad Zakir、Ando Hiroshi、Unno Shumpei、Nakamoto Tetsuji、Kitagawa Junichi
    • Journal Title

      Neurogastroenterology & Motility

      Volume: 32 Issue: 1

    • DOI

      10.1111/nmo.13728

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Role of Transient Receptor Potential (TRP) Channels in the Transduction of Dental Pain2019

    • Author(s)
      Hossain Mohammad、Bakri Marina、Yahya Farhana、Ando Hiroshi、Unno Shumpei、Kitagawa Junichi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 20 Issue: 3 Pages: 526-526

    • DOI

      10.3390/ijms20030526

    • NAID

      120006771437

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 上喉頭神経に発現しているTRPA1チャネルと化学刺激により誘発される嚥下反射2021

    • Author(s)
      安藤宏, Hossain MZ, 海野俊平, 北川純一
    • Organizer
      日本味と匂学会第55回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] The role of transient receptor potential ankyrin 1 channels (TRPA1s) in triggering the swallowing reflex in rats2021

    • Author(s)
      Hossain MZ, Ando H, Unno S, Kitagawa J
    • Organizer
      11th European Society for Swallowing Disorders Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Involvement of TRP and Piezo channels expressed on the superior laryngeal nerve afferents in swallowing reflex2020

    • Author(s)
      Ando H, Hossain MZ, Unno S and Kitagawa J
    • Organizer
      The 18th International symposium on Olfaction and Taste (Virtual meeting)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 上喉頭神経に発現しているTRP、ASICおよびPiezoチャネルと嚥下誘発2019

    • Author(s)
      安藤宏,Mohammad Zakir Hossain,海野俊平,増田裕次,北川純一
    • Organizer
      日本味と匂学会第53回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 咽頭・喉頭領域に発現している様々なイオンチャネルと嚥下反射の関連2019

    • Author(s)
      Mohammad Zakir Hossain,安藤宏,海野俊平,増田裕次,北川純一
    • Organizer
      第61回歯科基礎医学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 喉頭・領域を支配する上喉頭神経におけるTRP,ASIC およびPiezo チャ ネルの発現2019

    • Author(s)
      安藤宏,Mohammad Zakir Hossain,海野俊平,増田裕次,北川純一
    • Organizer
      第61回歯科基礎医学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Acid-sensing ion channels 3 (AISC3s) in the larynx and associated laryngopharyngeal region is functional to induce the swallowing reflex2019

    • Author(s)
      Mohammad Zakir Hossain, Hiroshi Ando, Shumpei Unno, and Junichi Kitagawa
    • Organizer
      第13回三叉神経領域の感覚-運動統合機構研究会
    • Related Report
      2019 Research-status Report

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

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