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Regulatory mechanism of spatiotemporal coordination of gastrointestinal motility and its medical application

Research Project

Project/Area Number 22K19530
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 53:Organ-based internal medicine and related fields
Research InstitutionKyushu University

Principal Investigator

Ogawa Yoshihiro  九州大学, 医学研究院, 主幹教授 (70291424)

Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords消化管運動 / 高解像度食道内圧検査 / 数理モデル / 光遺伝学 / 排便中枢
Outline of Research at the Start

消化管は異なる解剖学的特徴を有する複数のサブ領域より構成される。食道から肛門まで一連の消化管機能発現には、食物摂取後の時間経過に従ってサブ領域の時空間的・協調的運動が必須である。本研究では、マウスの食道、幽門、回盲部そして肛門の括約筋圧をモニターすることにより、消化管運動の時空間的協調性における括約筋の役割を解明するとともに、中枢神経による括約筋機能の制御の分子基盤を明らかにする。これらの研究成果を踏まえて作製する数理モデルを駆使して、ヒトと齧歯類の種属差、異なるサブ領域を隔てる括約筋機能の相違、臨床研究と動物実験のギャップを埋めることにより、消化管運動の時空間的協調性の包括的理解を目指す。

Outline of Final Research Achievements

The sphincters, which are crucial for the regulation of gastrointestinal movements, require precise timing to contract and relax coordinately. Currently, the underlying mechanisms are not fully understood. Our research has concentrated on two types of sphincters: the lower esophageal sphincter, which demarcates the esophagus and stomach, which are important for the ingestion of food, and the anal sphincter, which plays a role in the excretion of waste.
Regarding the lower esophageal sphincter, we have uncovered the critical roles of mechanoreceptor channels in sensory perception and of myosin proteins in muscle fiber composition. We have also successfully replicated esophageal movements through a mathematical model that emulates and visualizes the motions. On the other hand, in the anal sphincter, we have deciphered the involvement of the brain’s defecation center in the act of defecation, shedding light on this intricate process.

Academic Significance and Societal Importance of the Research Achievements

消化管括約筋の機能障害は、消化管内容物の生理的輸送を妨げることにより、様々な疾患の発症と関連する。例えば、下部食道括約筋の機能障害は、胃内容物を食道に逆流することにより胃食道逆流症やBarrett腺癌を発症する可能性がある。一方、肛門括約筋の機能障害は、便排出障害型の慢性便秘症を発症させる。本研究成果は、消化管括約筋の機能障害により発症する良性疾患から悪性疾患の発症予測や新しい治療法の開発まで幅広い波及効果が期待される。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (12 results)

All 2024 2023 2022 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (4 results) Remarks (3 results)

  • [Journal Article] The interplay between alterations in esophageal microbiota associated with th17 immune response and impaired LC20 phosphorylation in achalasia.2024

    • Author(s)
      Ikeda H, Ihara E, Takeya K, Mukai K, Onimaru M, Ouchida K, Hata Y, Bai X, Tanaka Y, Sasaki T, Saito F, Eto M, Nakayama J, Oda Y, Nakamura M, Inoue H, Ogawa Y
    • Journal Title

      J Gastroenterol

      Volume: In press Issue: 5 Pages: 361-375

    • DOI

      10.1007/s00535-024-02088-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluating the efficacy and safety of acotiamide in patients with esophagogastric junction outflow obstruction: study protocol for an investigator-initiated, multi-center, randomized, double-blind, placebo-controlled phase II trial2023

    • Author(s)
      Esaki M, Ihara E, Manabe N, Kawami N, Iwakiri K, Akiyama J, Kuribayashi S, Uraoka T, Ogino H, Chinen T, Misumi A, Watanabe H, Suzuki M, Kishimoto J, Ogawa Y
    • Journal Title

      Trials

      Volume: 24 Issue: 1 Pages: 459-459

    • DOI

      10.1186/s13063-023-07468-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of a new endoscopy system to visualize bilirubin for the diagnosis of duodenogastroesophageal reflux2023

    • Author(s)
      Wada M, Minoda Y, Ihara E, Tsuru H, Hata Y, Nagatomo S, Esaki M, Bai X, Tanaka Y, Chinen T, Ogino H, Ogawa Y
    • Journal Title

      Dig. Endosc.

      Volume: - Issue: 8 Pages: 904-914

    • DOI

      10.1111/den.14749

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Determination of Region-Specific Roles of the M3 Muscarinic Acetylcholine Receptor in Gastrointestinal Motility2022

    • Author(s)
      Igarashi-Hisayoshi Yoko、Ihara Eikichi、Bai Xiaopeng、Higashi Chika、Ikeda Hiroko、Tanaka Yoshimasa、Hirano Mayumi、Ogino Haruei、Chinen Takatoshi、Taguchi Yasushi、Ogawa Yoshihiro
    • Journal Title

      Digestive Diseases and Sciences

      Volume: 68 Issue: 2 Pages: 439-450

    • DOI

      10.1007/s10620-022-07637-y

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Improved esophagography screening for esophageal motility disorders using wave appearance and supra-junctional ballooning2022

    • Author(s)
      Hata Yoshitaka、Ihara Eikichi、Wada Masafumi、Tsuru Hirotaka、Muta Kazumasa、Minoda Yosuke、Bai Xiaopeng、Esaki Mitsuru、Tanaka Yoshimasa、Chinen Takatoshi、Ogino Haruei、Sakamoto Ryuichi、Ogawa Yoshihiro
    • Journal Title

      Journal of Gastroenterology

      Volume: 57 Issue: 11 Pages: 838-847

    • DOI

      10.1007/s00535-022-01913-4

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] ヒト臨床検体を用いた食道アカラシアの病態解明2023

    • Author(s)
      池田浩子, 伊原栄吉, 畑 佳孝, 和田将史, 小川佳宏
    • Organizer
      第121回日本消化器病学会九州支部例会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 光遺伝学および化学遺伝学的手法と逆行性トレーサーを用いた排便機構の解明2023

    • Author(s)
      田中義将、佛坂孝太、伊原栄吉、小川佳宏
    • Organizer
      第65回日本平滑筋学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 光遺伝学的手法を用いた排便中枢の同定及び役割の解明2022

    • Author(s)
      佛坂孝太, 田中義将, 伊原栄吉, 小川佳宏
    • Organizer
      第64回日本平滑筋学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] ヒト臨床検体を用いた食道アカラシアの病態解明2022

    • Author(s)
      池田浩子, 伊原 栄吉, 小川 佳宏
    • Organizer
      第64回日本平滑筋学会総会
    • Related Report
      2022 Research-status Report
  • [Remarks] 九州大学大学院医学研究院病態制御内科学

    • URL

      https://www.intmed3.med.kyushu-u.ac.jp/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
  • [Remarks] 九州大学大学院医学研究院病態制御内科学 News & Topics

    • URL

      https://www.intmed3.med.kyushu-u.ac.jp/information/detail/masterid/73/

    • Related Report
      2022 Research-status Report
  • [Remarks] 日本平滑筋学会Newsletter vol.17

    • URL

      https://www.jssmr.jp/official/documents/letter/newsletter(17).pdf

    • Related Report
      2022 Research-status Report

URL: 

Published: 2022-07-05   Modified: 2025-01-30  

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