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Exploring the systemic effect on intestinal dysbiosis induced by oral Candida albicans

Research Project

Project/Area Number 17K11606
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Morphological basic dentistry
Research InstitutionHokkaido University

Principal Investigator

Hasebe Akira  北海道大学, 歯学研究院, 教授 (90281815)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsCandida albicans / 口腔カンジダ症 / 腸内細菌叢 / IgA / 短鎖脂肪酸 / 腸炎 / マウス / DSS誘導性腸炎 / dysbiosis / 免疫学
Outline of Final Research Achievements

We investigated the effect of continuous ingestion of Candida albicans on the intestinal flora in mice. As a result, we found that C. albicans ingestion induced an increase of Lactobacillales and a decrease of Bacteroides decreased in the intestinal flora, and that the alteration of the intestinal flora exacerbated colitis in mice. Although the level of IgA in feces was high in mice with C. albicans ingestion, it was not associated with specific IgA to Bacteroides or Lactobacillales in intestinal microflora. Among short-chain fatty acids in feces, succinic acid was significantly high in mice with C. albicans ingestion.

Academic Significance and Societal Importance of the Research Achievements

口腔にカンジダ症を起こすCandida albicansを常時摂取すると、腸内細菌叢において、偏性嫌気性菌の割合が減少し通性嫌気性菌の割合が増加することがわかった。さらに、それにより全身的には腸炎が悪化することがわかった。
カンジダの常時摂取により腸内細菌叢が乱れるメカニズムは、腸管におけるIgAが関与している可能性や、腸炎の悪化には腸管における一部の短鎖脂肪酸の分泌が関与している可能性を示唆することができたが、本研究により、口腔のカンジダが口腔の炎症のみならず全身の健康状態に影響を及ぼす可能性を示すことができたので、国民に口腔衛生環境の重要性を訴える一助となると考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017

All Journal Article (1 results) Presentation (4 results)

  • [Journal Article] Differences in interleukin-1β release-inducing activity of Candida albicans toward dendritic cells and macrophages2018

    • Author(s)
      Hasebe Akira、Saeki Ayumi、Yoshida Yasuhiro、Shibata Ken-ichiro
    • Journal Title

      Archives of Oral Biology

      Volume: 93 Pages: 115-125

    • DOI

      10.1016/j.archoralbio.2018.06.004

    • Related Report
      2018 Research-status Report
  • [Presentation] Candida albicans oral ingestion affects intestinal microbial flora.2019

    • Author(s)
      長谷部 晃、佐伯 歩、柴田 健一郎
    • Organizer
      第92回日本細菌学会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 腸内細菌叢に及ぼすCandida albicans経口摂取の影響2018

    • Author(s)
      長谷部 晃、佐伯 歩、柴田 健一郎
    • Organizer
      第60回歯科基礎医学会学術大会
    • Related Report
      2018 Research-status Report
  • [Presentation] IL-1β production by dendritic cells and macrophages stimulated with Candida albicans2018

    • Author(s)
      長谷部 晃、佐伯 歩、柴田 健一郎
    • Organizer
      第91回日本細菌学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 樹状細胞とマクロファージへのCandida albicansのIL-1β産生誘導2017

    • Author(s)
      長谷部 晃、佐伯 歩、柴田 健一郎
    • Organizer
      第59回歯科基礎医学会学術大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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