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Dynamics of antibiotic resistant bacteria in sewer systems: Extending the One-Health Approach to environmental studies

Research Project

Project/Area Number 20H04348
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 63040:Environmental impact assessment-related
Research InstitutionKindai University

Principal Investigator

Matsui Kazuaki  近畿大学, 理工学部, 教授 (40435532)

Co-Investigator(Kenkyū-buntansha) 鏡味 麻衣子  横浜国立大学, 大学院環境情報研究院, 教授 (20449250)
川津 一隆  東北大学, 生命科学研究科, 助教 (20747547)
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: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2020: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Keywords下水生態系 / 微生物群集 / 薬剤耐性遺伝子 / time series / 薬剤耐性細菌 / 下水の微生物動態 / 都市水域生態 / 将来予測 / 微生物群集動態 / 動態予測 / 下水微生物生態
Outline of Research at the Start

都市の地下に広がる下水管路は人間社会に最も近い水環境であり、日本には総延長で約42万キロメートルの下水道管が張り巡らされている。人の排泄物に含まれる細菌や薬剤が流れ込む下水管内では、薬剤耐性細菌が選択的に生き残ると言われている。しかし、薬剤耐性細菌が下水管内の細菌群集にどの程度含まれ、時間の経過とともにどのような変化をするかについては明らかになっていない。また湖沼や河川の生態系では細菌群集への影響が大きい真核微生物群集との関係性については、全く解明されていない。
本研究では、下水の微生物群集動態を水域生態学的観点から解明し、薬剤耐性細菌を蔓延させないための公衆衛生管理に活用することを目指す。

Outline of Final Research Achievements

Data implementation is necessary to extend the One health approach concept to environmental studies. We investigated on the seasonal dynamics of microbial communities and the antibiotic resistance genes (ARGs) in sewer environment using metabarcoding analysis and quantitative PCR analysis. Time series analysis revealed that the bacterial community assemble into two distinct community states according to the wastewater temperature. Over eighty percent of the bacterial community compositions matched between the US and Japanese sewers. However, the time series analysis indicated that the amount of ARGs was not influenced by the wastewater temperature. Those results suggest that the dynamics of ARGs were independent of bacterial community shifts in the sewer environment.

Academic Significance and Societal Importance of the Research Achievements

河川や湖沼と同様に、下水中においても微生物群集が季節変化していることを実証した。日本と米国の微生物叢の比較では、相対的な微生物量の80%以上が共通した微生物種で占められていることがわかった。また下水における薬剤耐性遺伝子量の通年変化を、初めてデーターとして示した。さらに薬剤耐性遺伝子の拡散パターンが、可動遺伝因子を介した拡散経路以外にも、もう一つ別に存在する可能性を示した。遺伝子の水平伝播環境中での薬剤耐性細菌の動態がほとんど明らかにされていない中、ヒトの生活圏での薬剤耐性遺伝子動態を示す事で、One Healthアプローチをより中味の伴った行動指針にできると期待できる。

Report

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

    (11 results)

All 2023 2022 Other

All Int'l Joint Research (3 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] University of Wisconsin-Milwaukee(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Wisconsin-Milwaukee(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Wisconsin-Milwaukee(米国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Microbial community composition and function in an urban waterway with combined sewer overflows before and after implementation of a stormwater storage pipe2023

    • Author(s)
      Matsui Kazuaki、Miki Takeshi
    • Journal Title

      PeerJ

      Volume: 11 Pages: e14684-e14684

    • DOI

      10.7717/peerj.14684

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Aphelidium parallelum sp. nov., a new aphelid parasitic on selenastracean green algae2022

    • Author(s)
      Kensuke Seto, Takashi Nakada, Yuuhiko Tanabe, Masaki Yoshida, Maiko Kagami
    • Journal Title

      Mycologia

      Volume: - Issue: 3 Pages: 544-555

    • DOI

      10.1080/00275514.2022.2039487

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non‐linear time‐series analysis of the interaction between the citrus whitefly and the whitefly‐specialist ladybird2022

    • Author(s)
      Noriyuki Suzuki、Kawatsu Kazutaka、Kaneko Shuji
    • Journal Title

      Journal of Applied Entomology

      Volume: 146 Issue: 7 Pages: 903-910

    • DOI

      10.1111/jen.13021

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Disproportionate Changes in Composition and Molecular Size Spectra of Dissolved Organic Matter between Influent and Effluent from a Major Metropolitan Wastewater Treatment Plant.2022

    • Author(s)
      H. Lin, K. Matsui, R.J. Newton, and L. Guo
    • Journal Title

      ACS ES&T Water

      Volume: 2 Issue: 1 Pages: 216-225

    • DOI

      10.1021/acsestwater.1c00391

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 自然河川での薬剤耐性菌の動態2022

    • Author(s)
      小林由紀、田中佑佳、鶴井美桜、松井一彰
    • Organizer
      日本生態学会第69回全国大会、福岡、口頭発表C01-06
    • Related Report
      2022 Annual Research Report
  • [Presentation] 下水における薬剤耐性遺伝子の動態2022

    • Author(s)
      松井 一彰、 鏡味 麻衣子、川津 一隆、三木 健
    • Organizer
      第57回日本水環境学会年会、愛媛大学、 口頭発表1-F-10-1
    • Related Report
      2022 Annual Research Report
  • [Presentation] 状況依存性による生物群集指標の分類2022

    • Author(s)
      大友 優里,益田 玲爾,長田 穣,川津 一隆,近藤 倫生
    • Organizer
      日本生態学会第70回全国大会,仙台,口頭発表A03-05
    • Related Report
      2022 Annual Research Report
  • [Presentation] The roles of chytrids in aquatic ecosystems2022

    • Author(s)
      Maiko Kagami
    • Organizer
      Chytrid workshop, Michigan USA, (Online)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited

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

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