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Development of a new preventive method for incontinence-associated dermatitis in the elderly: focusing on urea degradation by bacteria

Research Project

Project/Area Number 19K20756
Project/Area Number (Other) 17H06648 (2017-2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2017-2018)
Research Field Gerontological nursing
Research InstitutionThe University of Tokyo

Principal Investigator

Mugita Yuko  東京大学, 大学院医学系研究科(医学部), 助教 (00804874)

Project Period (FY) 2017-08-25 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords失禁関連皮膚炎 / アンモニア / 尿素分解酵素 / 細菌 / 尿素 / 失禁 / 皮膚生理機能 / パッド / 看護学
Outline of Research at the Start

細菌による尿素分解抑制効果を有する新規パッドのIAD予防効果の検証するために、臨床研究を実施する
・研究デザイン:ランダム化比較試験
・対象者:尿失禁/尿便失禁を有しおむつを使用している65歳以上の患者
・研究方法:ベースラインにて皮膚状態を観察・測定後、介入群(細菌による尿素分解抑制効果を有するパッド)および対照群(従来パッド)に割り付け、それぞれパッドを継続して使用する。一定期間の介入の後、使用
後パッドの状態および皮膚状態を観察・測定する。
・アウトカム:IAD発生率、IAD重症度、使用後パッド内 pH・におい・生菌数、皮膚 pH、皮膚浸軟指標、皮膚バリア機能低下指標、掻痒感および潜在的炎症の評価

Outline of Final Research Achievements

The goal of this study was to establish a new method to prevent incontinence-associated dermatitis by focusing on urea degradation by bacteria.
We tested the effect of adding an antimicrobial agent and a urease inhibitor on the inhibition of urea degradation by bacteria (in vitro experiments). The results suggested that the addition of both antimicrobial agents and urease inhibitors above a certain concentration suppressed ammonia production by urea degradation and may contribute to the suppression of skin and pad pH elevation.
We also verified the performance of a prototype pad based on the concept of inhibiting urea degradation by bacteria (in vitro experiment). The results showed that the pads' antimicrobial performance and ability to inhibit pH elevation were confirmed up to 4 hours after urine containing bacteria was absorbed by the pads. Important finding that could lead to the development of new pads for the prevention of incontinence-associated dermatitis were obtained.

Academic Significance and Societal Importance of the Research Achievements

高齢者は失禁を有する方が多く、また、皮膚構造の変化に伴う皮膚機能の低下も有することから、高齢者はIAD発生リスクが極めて高い。実際、失禁を有する高齢者のIAD有病率は高く、有効な予防法の開発が喫緊の課題である。
本研究では、IAD予防に効果的なパッドを開発する基盤として、尿素分解によるpH上昇を抑制するというコンセプトの有効性を明確化した。今後、このコンセプトに基づき開発された新たなパッドの使用により、失禁を有する高齢者におけるIAD発生率あるいは重症度が低減することが予想される。IAD予防における新たな介入方法を臨床に提示することができ、IADに苦しむ高齢者の利益に直接貢献できると期待される。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (9 results)

All 2021 2020 2019 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (4 results) (of which Int'l Joint Research: 1 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Assessing absorbent products’ effectiveness for the prevention and management of incontinence-associated dermatitis caused by urinary, faecal or double adult incontinence: A systematic review2021

    • Author(s)
      Mugita Yuko、Koudounas Sofoklis、Nakagami Gojiro、Weller Carolina、Sanada Hiromi
    • Journal Title

      Journal of Tissue Viability

      Volume: 30 Issue: 4 Pages: 599-607

    • DOI

      10.1016/j.jtv.2021.07.002

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Combination of urease inhibitor and antiseptic inhibits urea decomposition-induced ammonia production by Proteus mirabilis2020

    • Author(s)
      Mugita Y, Nakagami G, Minematsu T, Kitamura A, Sanada H
    • Journal Title

      International Wound Journal

      Volume: 17(6) Issue: 6 Pages: 1558-1565

    • DOI

      10.1111/iwj.13422

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Influence of digestive enzymes on development of incontinence-associated dermatitis: inner tissue damage and skin barrier impairment caused by lipidolytic enzymes and proteases in rat macerated skin2018

    • Author(s)
      Mugita Y, Minematsu T, Nakagami G, Sanada H
    • Journal Title

      International Wound Journal

      Volume: 印刷中 Issue: 4 Pages: 623-632

    • DOI

      10.1111/iwj.12906

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] Assessing absorbent products’ effectiveness for the prevention and management of incontinence-associated dermatitis caused in adults: a systematic review2021

    • Author(s)
      Mugita Yuko, Koudounas Sofoklis, Nakagami Gojiro, Weller Carolina, Sanada Hiromi
    • Organizer
      The 9th Asia Pacific Enterostomal Therapy Nurse Association Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 失禁関連皮膚炎予防における新規パッドの有効性の検証-細菌による尿素分解に着目して2021

    • Author(s)
      麦田 裕子, 仲上 豪二朗, 浦井 珠恵, 峰松 健夫, 北村 言, 真田 弘美
    • Organizer
      第34回日本老年泌尿器科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Proteus mirabilisに対する消毒剤, ウレアーゼ阻害剤による尿素分解抑制効果の検証.2019

    • Author(s)
      麦田 裕子, 仲上 豪二朗, 真田 弘美.
    • Organizer
      第7回看護理工学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] 失禁関連皮膚炎モデルラットにおけるN-(3-Oxotetradecanoyl)-L-homoserine lactoneの治癒促進効果の検証2017

    • Author(s)
      麦田 裕子, 峰松 健夫, 仲上 豪二朗, 須釜 淳子, 真田 弘美
    • Organizer
      第37回日本看護科学学会学術集会
    • Related Report
      2017 Annual Research Report
  • [Book] エキスパートナース2017年12月号. PART1 発生メカニズム 発赤を見たときにはもう遅い! IADで知っておきたい新しい「発生メカニズム」2017

    • Author(s)
      峰松健夫, 麦田裕子.
    • Total Pages
      9
    • Publisher
      照林社
    • Related Report
      2017 Annual Research Report
  • [Patent(Industrial Property Rights)] 失禁関連皮膚炎抑制剤スクリーニング方法2017

    • Inventor(s)
      小山英俊、真田弘美、仲上豪二朗、麦田裕子
    • Industrial Property Rights Holder
      国立大学法人 東京大学、大王製紙株式会社
    • Industrial Property Rights Type
      特許
    • Filing Date
      2017
    • Related Report
      2017 Annual Research Report

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Published: 2017-08-25   Modified: 2024-03-26  

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