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Analysis of neural network regarding oral function

Research Project

Project/Area Number 20H03887
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionOsaka University

Principal Investigator

Kogo Mikihiko  大阪大学, 大学院歯学研究科, 名誉教授 (20205371)

Co-Investigator(Kenkyū-buntansha) 田中 晋  大阪大学, 大学院歯学研究科, 教授 (00367541)
山西 整  大阪大学, 大学院歯学研究科, 招へい教員 (20397780)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2023: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords咀嚼 / 口腔 / 嚥下 / 頭頚部 / 感覚 / 運動 / 制御 / 口 / 神経 / 機能 / 三叉神経
Outline of Research at the Start

味覚、嗅覚として入力された求心性シグナルが、視床下部外側野でのOrexinおよびNeuropeptide Yの産生、さらに縫線核におけるSerotoninおよびSubstance Pの産生という形で統合され、口腔機能の出力を制御する。有病者、高齢者の摂食・嚥下障害の病態を明らかにするために、口腔機能相互の協調メカニズムを明らかにする必要がある。今回の研究では、咀嚼、嚥下に呼吸を加えた口腔機能出力の協調に焦点を当て、口腔機能制御ネットワークが、感覚入力から始まる包括的な神経回路の中で、口腔機能の出力統合に対してどのような役割を担うか、その脳内メカニズムを多角的なアプローチによって解明する。

Outline of Final Research Achievements

On the olfactory side, OSM odors, which are known to have a mild sedative effect, were accompanied by a slowdown in chewing movements, which was shown to reduce appetite, food intake, and body weight.
In the masticatory motor system, it was suggested that the nucleus raphe obscures located at the rostral level of the sliced specimen may control respiratory activity, and the nucleus raphe obscures at the caudal level of the specimen may control the expression of swallowing activity. In addition, nucleus raphe obscures may regulate swallowing activity via 5-HT1A receptors in sliced specimens.
As a masticatory disintegration system, no rhythmic activity (chewing-like movements) from the trigeminal motor root was recorded in ALS mice. The chewing movement-like rhythm that was supposed to be transmitted to the trigeminal motor nucleus had been disrupted in the previous stage, the premotoneuron stage.

Academic Significance and Societal Importance of the Research Achievements

口腔に関連する吸気や咀嚼・嚥下運動系の連携を実際に証明することができそのネットワークの一部を示せた意義は大きい。不確縫線核の口腔機能の役割の一部を示すことができた。Isolated BrainstemやALS系など新しい研究方法にアクセスしそれらが有用な方法であることを示せた。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (2 results)

All 2023 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] Analysis of Feeding Behavior Characteristics in the Cu/Zn Superoxide Dismutase 1 (SOD1) SOD1G93A Mice Model for Amyotrophic Lateral Sclerosis (ALS)2023

    • Author(s)
      Kitaoka Yoshihiro、Seki Soju、Kawata Sou、Nishiura Akira、Kawamura Kohei、Hiraoka Shin-ichiro、Kogo Mikihiko、Tanaka Susumu
    • Journal Title

      Nutrients

      Volume: 15 Issue: 7 Pages: 1651-1651

    • DOI

      10.3390/nu15071651

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] AIを用いたALSモデルマウスの咀嚼運動解析と体重減少との関係2022

    • Author(s)
      北岡 好大 , 関 壮樹 , 川田 創 , 西浦 輝 , 平岡 慎一郎 , 田中 晋, 古郷幹彦
    • Organizer
      第67回日本口腔外科学会学術集会
    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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