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Analysis of oral microbiome in palmoplantar pustulosis patients

Research Project

Project/Area Number 19K08759
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53050:Dermatology-related
Research InstitutionTokyo Dental College

Principal Investigator

Kouno Michiyoshi  東京歯科大学, 歯学部, 准教授 (30403182)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords掌蹠膿疱症 / 歯性病巣感染 / マイクロバイオーム / 炎症性疾患 / 病巣感染 / 炎症性皮膚疾患
Outline of Research at the Start

本研究では日本人掌蹠膿疱症患者の口腔マイクロバイオーム解析データの蓄積を目指し、さらに、尋常性乾癬、乾癬性関節炎、関節リウマチ、炎症性腸疾患、IgA腎症患者の口腔マイクロバイオームとの比較を行う。また、これらの疾患のマイクロバイオームと唾液中のサイトカインの変化における相関を調べる。また、唾液でのマイクロバイオーム,サイトカインの変化と、扁桃,歯肉粘膜,頬粘膜など異なる部位のそれと比較検討する。これらの解析結果により、掌蹠膿疱症およびこれらの炎症性疾患に起因する日本人特有の治療ターゲットまたはバイオマーカーに成り得る菌種やサイトカインの同定を目指す。

Outline of Final Research Achievements

More than half of palmoplantar pustulosis (PPP) patients improved after dental treatment, while the rest did not. Thus, we here investigated the microbial factors affecting the clinical course of PPP after dental treatment. The differences of oral microbiota among healthy controls (HC; n=10), improved (Group I; n=7) and not-improved (Group N; n=6) patients were analyzed. When the alpha microbial diversity was assessed by Shannon index, Pielou’s index and the average operational taxonomic units (OTUs), not-improved patients had a lower-diversity microbiota compared to improved patients. The degree of changes of oral microbiota after dental focal infection treatment was higher in improved patients than in not-improved patients. Our findings suggested that oral microbial compositions and diversity could account for the distinct clinical course of PPP patients after dental infection control.

Academic Significance and Societal Importance of the Research Achievements

2022年に日本皮膚科学会より上梓された「掌蹠膿疱症診療の手引き」では歯性病巣感染治療の重要性が示されており、PPPと歯性病巣感染の関連性を示すエビデンスとなりうる本研究成果の学術的意義は高い。また、現在PPPの治療薬として承認された抗IL-23抗体に加え、複数のバイオ製剤の開発が進められているが、歯科治療により改善する症例や、関節症状のない症例では導入する意義は低い。真に必要な症例に対するバイオ製剤導入のエビデンスを提供し得る予後予測因子の同定は、独創的かつ患者本位の診療、我が国の医療経済に資するものであり社会的意義を持つと考えられる。

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

    (5 results)

All 2023 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results) Book (1 results)

  • [Journal Article] Autoimmune hemolytic anemia associated with herpes zoster.2023

    • Author(s)
      Baba Y, Kamata A, Kouno M, Takahashi S
    • Journal Title

      Journal of Dermatology

      Volume: 50(3) Issue: 3

    • DOI

      10.1111/1346-8138.16594

    • Related Report
      2022 Annual Research Report
  • [Journal Article] The oral microbial composition and diversity affect the clinical course of palmoplantar pustulosis patients after dental focal infection treatment2021

    • Author(s)
      Akiyama Yurie、Minabe Masaki、Inada Junichiro、Nomura Takeshi、Takahashi Shinichi、Ishihara Kazuyuki、Kouno Michiyoshi
    • Journal Title

      Journal of Dermatological Science

      Volume: 104 Issue: 3 Pages: 193-200

    • DOI

      10.1016/j.jdermsci.2021.11.001

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] The oral microbial composition and diversity affected the clinical course of palmoplantar pustulosis patients after dental infection control2020

    • Author(s)
      Kouno M, Akiyama Y, Minabe M, Inada J, Nomura T, Ishihara K, Takahashi S
    • Organizer
      45th Annua Meeting of Japanese Society for Investigative Dermatology
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 掌蹠膿疱症性骨関節炎患者と関節リウマチ患者の口腔マイクロバイオーム解析2020

    • Author(s)
      河野通良,秋山友里恵,鎌田亜紀,関口文世,細川僚子,瀬田範行,野村武史,石原和幸,高橋愼一
    • Organizer
      第72回日本皮膚科学会西部支部学術大会
    • Related Report
      2020 Research-status Report
  • [Book] 乾癬・掌蹠膿疱症 病態の理解と治療最前線2020

    • Author(s)
      山本俊幸
    • Total Pages
      448
    • Publisher
      中山書店
    • ISBN
      9784521748610
    • Related Report
      2020 Research-status Report

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

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