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Exploratory study of factors inducing tongue microbiota transition in the elderly for the prevention of pneumonia

Research Project

Project/Area Number 19K10473
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57080:Social dentistry-related
Research InstitutionOsaka Dental University

Principal Investigator

TAKAHASHI Kazuya  大阪歯科大学, 歯学部, 教授 (10236268)

Co-Investigator(Kenkyū-buntansha) 沖永 敏則  大阪歯科大学, 歯学部, 教授 (60582773)
南部 隆之  大阪歯科大学, 歯学部, 講師 (80367903)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords高齢者 / 口腔健康 / 細菌叢 / 舌苔
Outline of Research at the Start

本研究では,我々が構築した菌叢構成を維持したまま培養可能な口腔の菌叢培養モデルと次世代シークエンス技術を組み合わせることで,高齢者を被検者として,舌菌叢をタイプ1型(肺炎リスク型)から2型(健康型)へと遷移させる方法や添加物を,ヒト介入試験をすることなく探索する.本研究が,「高齢者の舌菌叢を変えることで肺炎関連死リスクを下げる」手法開発の一助となると期待される.

Outline of Final Research Achievements

The aim of this study was to find a method for transitioning the bacterial microbiota of the elderly to a healthy type without human intervention trials, by combining our oral microbiota culture model, which can be cultured while maintaining the microbiota composition, with next-generation sequencing technology. As a result, the conditions under which the bacterial microbiota changes significantly with oxygen concentration and pH were clarified. It is hoped that this study will contribute to the development of a method to reduce the risk of pneumonia-related deaths by changing the tongue microbiota of the elderly.

Academic Significance and Societal Importance of the Research Achievements

高齢者の誤嚥性肺炎発症リスクの低下を目指し,社会的支援が行われていくなかで,摂食嚥下機能の向上,新規の口腔ケア手法の開発など,多面的な研究が並行して進められてきている.また,口腔細菌叢のタイプと肺炎関連死のリスクが関連することが最近報告されてきている.本研究により,「高齢者の舌菌叢を変える」複数の方法の一端を提示することができた.今後,肺炎予防を含めた様々な口腔疾患,全身疾患の予防・治療法を開発する一助となることが期待される.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (6 results) (of which Invited: 1 results)

  • [Journal Article] Interdental Plaque Microbial Community Changes under In Vitro Violet LED Irradiation2021

    • Author(s)
      Wang Dan、Nambu Takayuki、Tanimoto Hiroaki、Iwata Naohiro、Yoshikawa Kazushi、Okinaga Toshinori、Yamamoto Kazuyo
    • Journal Title

      Antibiotics

      Volume: 10 Issue: 11 Pages: 1348-1348

    • DOI

      10.3390/antibiotics10111348

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of tongue brushing on oral microbiome diversity2020

    • Author(s)
      Masago A, Maruyama H, Nambu T, Mashimo C, Takahashi K.
    • Journal Title

      Journal of Osaka Dental University

      Volume: 54 Issue: 2 Pages: 205-212

    • DOI

      10.18905/jodu.54.2_205

    • NAID

      130007975246

    • ISSN
      0475-2058, 2189-6488
    • Year and Date
      2020-10-25
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Inter-site and interpersonal diversity of salivary and tongue microbiomes, and the effect of oral care tablets2020

    • Author(s)
      Hugo Maruyama, Ayako Masago, Takayuki Nambu, Chiho Mashimo, Kazuya Takahashi, Toshinori Okinaga
    • Journal Title

      F1000Research

      Volume: 9 Pages: 1477-1477

    • DOI

      10.12688/f1000research.27502.1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influence of tongue brushing on oral microbiome diversity2020

    • Author(s)
      Masago A, Maruyama H, Nambu T, Mashimo C, Takahashi K
    • Journal Title

      Journal of Osaka Dental University

      Volume: 54

    • NAID

      130007975246

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 黄堯,南部隆之,真下千穂,円山由郷,髙橋一也,冲永敏則2021

    • Author(s)
      pHによる口腔細菌叢変化についての解析
    • Organizer
      第74回日本細菌学会関西支部総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Interdental Plaque Microbial Community Changes under In Vitro Violet LED Irradiation2021

    • Author(s)
      Wang Dan、Nambu Takayuki、Tanimoto Hiroaki、Iwata Naohiro、Yoshikawa Kazushi、Okinaga Toshinori、Yamamoto Kazuyo
    • Organizer
      第74回日本細菌学会関西支部総会
    • Related Report
      2021 Research-status Report
  • [Presentation] プロポリスが示す細菌種特異的な増殖抑制効果2020

    • Author(s)
      並河大裕,円山由郷,真砂彩子,真下千穂,南部隆之,沖永敏則,高橋一也
    • Organizer
      第73回日本細菌学会関西支部総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 高齢者舌苔細菌叢に与えるサルコペニアの影響2020

    • Author(s)
      並河大裕,真砂彩子,南部隆之,小渕隆一郎,奥野健太郎,Kang Wenyan,Zhang Lei,沖永敏則,高橋一也
    • Organizer
      第31回日本老年歯科医学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 口腔細菌叢の多様性に対する舌ブラシの影響2019

    • Author(s)
      眞砂彩子,円山由郷,南部隆之,真下千穂,髙橋一也
    • Organizer
      日本細菌学会関西支部会
    • Related Report
      2019 Research-status Report
  • [Presentation] 口腔細菌パターンを“健康型”へと変える試み2019

    • Author(s)
      南部隆之
    • Organizer
      日本歯科保存学会
    • Related Report
      2019 Research-status Report
    • Invited

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Published: 2019-04-18   Modified: 2024-01-30  

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