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Optimizing the wound microbiota of pressure injuries by adjusting the wound environment: Development of a wound biofilm control technology

Research Project

Project/Area Number 20H04010
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 58080:Gerontological nursing and community health nursing-related
Research InstitutionThe University of Tokyo

Principal Investigator

Nakagami Gojiro  東京大学, 大学院医学系研究科(医学部), 教授 (70547827)

Co-Investigator(Kenkyū-buntansha) 峰松 健夫  石川県立看護大学, 看護学部, 教授 (00398752)
大貝 和裕  金沢大学, AIホスピタル・マクロシグナルダイナミクス研究開発センター(保), 准教授 (40706983)
北村 言  東京大学, 大学院医学系研究科(医学部), 准教授 (80801951)
須釜 淳子  藤田医科大学, 社会実装看護創成研究センター, 教授 (00203307)
真田 弘美  石川県立看護大学, 看護学部, 教授 (50143920)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Keywordsバイオフィルム / マイクロバイオーム / 難治生創傷 / 創傷看護学 / リバーストランスレーショナルリサーチ / ディスバイオシス / 超音波デブリードマン / 難治性創傷 / 滲出液 / 皮膚常在細菌叢 / 褥瘡 / ディスバイオーシス / ドレッシング材
Outline of Research at the Start

褥瘡感染は死に至る合併症であり、予防のためにはその病態の根本にある創部バイオフィルムの制御が重要であるが、未だその対応は困難を極める。本課題ではこれまでに臨床応用した創部バイオフィルムの迅速可視化/非侵襲除去法をさらに発展させ、「創部バイオフィルムを形成する褥瘡細菌叢の改変技術(=褥瘡細菌叢の最適化)」を開発するために次の研究を実施する。①創部バイオフィルム形成に寄与する細菌叢の形成メカニズムの解明、②創傷環境調整により褥瘡細菌叢を最適化する方法の考案、③新規手法のバイオフィルム抑制・創傷感染予防効果の検証。これらを実施することで、バイオフィルムを制御する新たな創傷環境調整法を確立する。

Outline of Final Research Achievements

Pressure injury infection is one of major lethal complications, and control of wound biofilm is important for prevention, but it is still extremely difficult. The objective of this project was to further develop a method for rapid visualization and noninvasive removal of wound biofilm that has been applied clinically, and to develop a technology for modifying the pressure injury microbiota that form wound biofilm. Through this study, we found an effective biofilm removal method using a non-contact ultrasound debridement device, and characterized the microbiota that inhibit wound healing by microbiome analysis. This study contributed to the establishment of a foundation for a new wound environment conditioning method consisting of biofilm removal and correction of the wound microbiota.

Academic Significance and Societal Importance of the Research Achievements

褥瘡(床ずれ)が感染すると治療に難渋することからその予防が重要である。近年、褥瘡感染の原因として褥瘡の表面にいる細菌が作り出すバイオフィルムが注目されている。しかし、バイオフィルムを制御する方法は未だに確立されていないのが現状である。そのような状況の中、本研究はバイオフィルムを効果的に除去すること、そしてバイオフィルムを作る細菌の集団(細菌叢)を整えることの2つのアプローチを確立するための基礎となる結果を得た。これらの成果をもとに、新しいバイオフィルム制御方法が確立されることは褥瘡感染の予防にかかる患者の負担の軽減ならびに医療費の削減につながる。

Report

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

    (26 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (16 results) (of which Int'l Joint Research: 2 results,  Invited: 7 results) Remarks (1 results)

  • [Int'l Joint Research] The University of North Carolina(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Monash University(オーストラリア)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Relationship between healing status and microbial dissimilarity in wound and peri-wound skin in pressure injuries2023

    • Author(s)
      Kunimitsu Mao、Nakagami Gojiro、Kitamura Aya、Minematsu Takeo、Koudounas Sofoklis、Ogai Kazuhiro、Sugama Junko、Takada Chika、Yeo SeonAe、Sanada Hiromi
    • Journal Title

      Journal of Tissue Viability

      Volume: 32 Issue: 1 Pages: 144-150

    • DOI

      10.1016/j.jtv.2022.10.006

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Expression levels of NPPB, ITGB6, CPNE4, EML5, and ITSN1 in fresh exudates swabbed from critically colonised and infected full-thickness wounds in rats.2023

    • Author(s)
      Takizawa C, Minematsu T, Nakagami G, Kitamura A, Koudounas S, Kunimitsu M, Sanada H.
    • Journal Title

      International Wound Journal

      Volume: 20 Issue: 4 Pages: 1088-1097

    • DOI

      10.1111/iwj.13965

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bacterial invasion into the epidermis of rats with sodium lauryl sulphate-irritated skin increases damage and induces incontinence-associated dermatitis2023

    • Author(s)
      Sofoklis Koudounas, Takeo Minematsu, Yuko Mugita, Ayano Nakai, Hiromi Tobe, Chihiro Takizawa, Mao Kunimitsu, Gojiro Nakagami, Hiromi Sanada
    • Journal Title

      International Wound Journal

      Volume: 20(1) Issue: 1 Pages: 191-200

    • DOI

      10.1111/iwj.13864

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An in vivo critically colonised wound model with dysbiotic wound microbiota2022

    • Author(s)
      Kunimitsu Mao、Nakagami Gojiro、Minematsu Takeo、Koudounas Sofoklis、Sanada Hiromi
    • Journal Title

      International Wound Journal

      Volume: 20 Issue: 3 Pages: 648-658

    • DOI

      10.1111/iwj.13906

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Concurrent validity of biofilm detection by wound blotting on hard-to-heal wounds2021

    • Author(s)
      Astrada Adam、Nakagami Gojiro、Minematsu Takeo、Goto Taichi、Kitamura Aya、Mugita Yuko、Sanada Hiromi
    • Journal Title

      Journal of Wound Care

      Volume: 30 Issue: Sup4 Pages: S4-S13

    • DOI

      10.12968/jowc.2021.30.sup4.s4

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dissemination of microbiota between wounds and the beds of patients with pressure injuries: a cross-sectional study2021

    • Author(s)
      Kunimitsu Mao、Nakagami Gojiro、Kitamura Aya、Minematsu Takeo、Mugita Yuko、Ogai Kazuhiro、Sugama Junko、Aoki Miku、Takada Chika、Sanada Hiromi
    • Journal Title

      Wound Practice and Research

      Volume: 29 Issue: 2 Pages: 70-76

    • DOI

      10.33235/wpr.29.2.70-76

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effectiveness of ultrasonic debridement on reduction of bacteria and biofilm in patients with chronic wounds: A scoping review2020

    • Author(s)
      Kataoka Yukie、Kunimitsu Mao、Nakagami Gojiro、Koudounas Sofoklis、Weller Carolina D.、Sanada Hiromi
    • Journal Title

      International Wound Journal

      Volume: 18 Issue: 2 Pages: 176-186

    • DOI

      10.1111/iwj.13509

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Bio-engineering nursing/hands-on workshop: Use of ultrasonography, AI/AR, and wound biofilm visualization technologies2023

    • Author(s)
      Suriadi Jais, Takahashi Toshiaki, Nakagami Gojiro
    • Organizer
      The 26th East Asian Forum of Nursing Scholars
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 制御性T細胞とディスバイオシス状態の創部細菌叢の関連:新規臨界的定着予防介入の確立に向けた基礎的検討2022

    • Author(s)
      國光真生, 仲上豪二朗, 峰松健夫, Sofoklis Koudounas, 真田弘美
    • Organizer
      第52回日本創傷治癒学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 褥瘡患者の創部細菌叢と予後との関連の予備的検討:次世代シーケンサーによるメタ16S 解析と機械学習2022

    • Author(s)
      加藤頼子, 藤井隆夫, 尾田友香, 平田善彦, 平大輔, 峰松健夫, 臺美佐子, 仲上豪二朗, 國光真生, 真田弘美
    • Organizer
      第74回日本生物工学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ディスバイオシス状態の創部細菌叢が惹起する臨界的定着と制御性T細胞の関連:機序解明に向けた基礎的検討2022

    • Author(s)
      國光真生, 仲上豪二朗, 峰松健夫, Sofoklis Koudounas, 真田弘美
    • Organizer
      第24回日本褥瘡学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高齢者の褥瘡管理におけるドレッシング交換及び創部洗浄の頻度の治癒遅延への影響 ラットクリティカルコロナイゼーション創モデルの作成2022

    • Author(s)
      滝沢知大, 峰松健夫, 仲上豪二朗, 北村言, 國光真生, 真田弘美
    • Organizer
      日本老年看護学会第27回学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Development of mRNA markers of wound infection in fresh exudate of rat full-thickness wounds2022

    • Author(s)
      Chihiro Takizawa, Takeo Minematsu, Gojiro Nakagami, Aya Kitamura, Sofoklis Koudounas, Mao Kunimitsu, Hiromi Sanada
    • Organizer
      The 31st Japanese Society of Wound, Ostomy & Continence Management
    • Related Report
      2022 Annual Research Report
  • [Presentation] A critically colonized wound model by transplanting the microbiota dissimilar to that of the peri-wound skin2022

    • Author(s)
      Mao Kunimitsu, Gojiro Nakagami, Takeo Minematsu, Sofoklis Koudounas, Hiromi Sanada
    • Organizer
      The 31st Japanese Society of Wound, Ostomy & Continence Management
    • Related Report
      2022 Annual Research Report
  • [Presentation] Relationship between healing status and microbial dissimilarity in wound and peri-wound skin in pressure injuries2022

    • Author(s)
      Mao Kunimitsu, Gojiro Nakagami, Takeo Minematsu, Hiromi Sanada
    • Organizer
      The 9th International Human Microbiome Consortium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Assessing complex wounds using advanced technology and innovation in healthcare.2022

    • Author(s)
      Gojiro Nakagami
    • Organizer
      The National Symposium and Workshop, Faculty of Nursing, Universitas Padjadjaran, Indonesia
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Advanced wound management strategy: New prophylaxis dressing and biofilm management technologies.2022

    • Author(s)
      Gojiro Nakagami
    • Organizer
      Hong Kong Enterostomal Therapist Association & ConvaTec Webinar
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Innovation in clinical nursing research : A new approach for infection control targeting wound biofilm in hard-to-heal wounds.2022

    • Author(s)
      Gojiro Nakagami
    • Organizer
      The 13th International Nursing Conference, Faculty of Nursing, Airlangga University, Indonesia
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] バイオフィルムのトータルマネジメント2021

    • Author(s)
      仲上 豪二朗
    • Organizer
      第30回日本創傷・オストミー・管理学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 褥瘡アセスメントに使用するバイオフィルムの簡便定量アプリケーションの開発2021

    • Author(s)
      中村 駿介, 仲上 豪二朗, 片岡 友紀恵, 幅 大二郎, 北村 言, 真田 弘美
    • Organizer
      第30回日本創傷・オストミー・管理学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] バイオフィルムをターゲットにした次世代の難治性創傷管理戦略2021

    • Author(s)
      仲上 豪二朗
    • Organizer
      日本バイオフィルム学会 第35回学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 創傷バイオフィルムの可視化がもたらす新たな感染対策2020

    • Author(s)
      仲上 豪二朗
    • Organizer
      第22回日本褥瘡学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Innovative point-of-care biofilm detection system for promoting wound healing in hard-to-heal wounds.2020

    • Author(s)
      Nakagami Gojiro
    • Organizer
      第40回日本看護科学学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Remarks] 東京大学大学院医学系研究科 健康科学・看護学専攻 老年看護学/創傷看護学分野

    • URL

      http://www.rounenkango.m.u-tokyo.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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