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Development of a metabolomics-based detection method of filarial infective larvae from blood-sucking insects

Research Project

Project/Area Number 19K06421
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionOita University

Principal Investigator

FUKUDA Masako  大分大学, 医学部, 助教 (00156788)

Co-Investigator(Kenkyū-buntansha) 大塚 靖  鹿児島大学, 総合科学域総合研究学系, 准教授 (00244161)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsメタボローム解析 / 吸血性昆虫 / ブユ / フィラリア感染幼虫 / 野生動物 / 人獣共通オンコセルカ症 / 人獣共通フィラリア症 / オンコセルカ / 感染幼虫
Outline of Research at the Start

動物に寄生するオンコセルカ(フィラリア)の人体感染が、新興人獣共通感染症として世界的に増えている。日本では、生息域が拡大した野生動物のフィラリアが吸血性昆虫を媒介者として人に感染する可能性が高い。本症の感染予防には、フィラリアの生活史の解明が不可欠である。しかし、フィラリア第3期幼虫(感染幼虫)を形態的に同定する媒介者検索法の煩雑さが、研究推進上、障害となってきた。本研究では、メタボローム解析を利用して昆虫内のフィラリア感染幼虫を効率的に検出する全く新しい方法を開発し、日本の人獣共通フィラリア症の伝播サイクルを解明する。さらに、新たな人獣共通フィラリア症発生の可能性を探る。

Outline of Final Research Achievements

To prevent zoonotic filarial infections, searching for the natural vectors (blood-sucking insects) of filariae is needed. We tried to develop a novel efficient method for the detection of filarial third-stage larvae from blood-sucking insects. Microfilariae of Onchocerca japonica (the causative agent of zoonotic onchocercosis in Japan) were injected intrathoracially into newly-emerged black flies for larval development. Metabolites in microfilariae, first-, second-, and third-stage larvae obtained from the flies were analyzed using a gas chromatography-mass spectrometer. Multivariate analysis of the data showed the complete separation of the four developmental stage groups. Metabolome analysis may be a useful tool for detection of filarial third-stage larvae.

Academic Significance and Societal Importance of the Research Achievements

吸血性昆虫内の感染幼虫を顕微鏡下で形態観察により同定する従来の媒介者検索法は煩雑であった。そのため人獣共通オンコセルカ(フィラリア)症の伝播サイクルの解明は進んでいなかった。メタボローム解析による今までにない効率的なフィラリア感染幼虫の検出法が実用化できれば、媒介者の検索が容易になる。本症の感染予防を促進するだけでなく、新たな人獣共通フィラリア症発生の可能性を予測することにも寄与できる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results)

  • [Int'l Joint Research] マラヤ大学(マレーシア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Clemson University(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Descriptions of two new species of the Simulium (Simulium) striatum species-group (Diptera: Simuliidae) from Taiwan and Japan, and a revised description of S. (S.) quinquestriatum (Shiraki)2022

    • Author(s)
      Takaoka Hiroyuki、Otsuka Yasushi、Huang Yao-Te、Low Van Lun、Fukuda Masako、Ya'cob Zubaidah
    • Journal Title

      Acta Tropica

      Volume: 227 Pages: 106-293

    • DOI

      10.1016/j.actatropica.2021.106293

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prevalence of Onchocerca japonica and O. takaokai infections in the Japanese wild boar, Sus scrofa leucomystax, and the Ryukyu wild boar, S. s. riukiuanus, in Japan2021

    • Author(s)
      Shigehiko Uni, Masako Fukuda, Shoji Uga, Takeshi Agatsuma, Jun Nakatani, Kazuo Suzuki, Yasushi Yokohata, Daisuke Kimura, and Hiroyuki Takaoka
    • Journal Title

      Parasitology International

      Volume: 83 Pages: 102313-102313

    • DOI

      10.1016/j.parint.2021.102313

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Human case of Onchocerca dewittei japonica infection in Fukushima, Northeastern Honshu, Japan2019

    • Author(s)
      Fukuda Masako、Uni Shigehiko、Igari Takahiro、Utsumi Yasufumi、Otsuka Yasushi、Nakatani Jun、Uga Shoji、Hara Tatsuru、Hasegawa Hideo、Takaoka Hiroyuki
    • Journal Title

      Parasitology International

      Volume: 72 Pages: 101943-101943

    • DOI

      10.1016/j.parint.2019.101943

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Revision of Simulium rufibasis (Diptera: Simuliidae) in Japan and Korea: Chromosomes, DNA, and Morphology2019

    • Author(s)
      Adler Peter H、Fukuda Masako、Takaoka Hiroyuki、Reeves Will K、Kim Sam-Kyu、Otsuka Yasushi
    • Journal Title

      Journal of Medical Entomology

      Volume: 57 Issue: 2 Pages: 388-403

    • DOI

      10.1093/jme/tjz197

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 奄美大島で採集したブユの吸血源とフィラリア感染について2022

    • Author(s)
      大塚靖、福田昌子、高岡宏行
    • Organizer
      第74回日本衛生動物学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ブユを利用した人獣共通オンコセルカ症の検索2021

    • Author(s)
      福田昌子
    • Organizer
      第73回日本衛生動物学会大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 鹿児島県中之島のブユ対策の現状と今後について2020

    • Author(s)
      大塚靖
    • Organizer
      日本島嶼学会2020年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 日本のアカクラアシマダラブユSimulium rufibasisの遺伝子解析2019

    • Author(s)
      福田昌子、大塚 靖、高岡宏行
    • Organizer
      第71回日本衛生動物学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 鹿児島県中之島の秋季におけるブユ対策について2019

    • Author(s)
      大塚 靖
    • Organizer
      第71回日本衛生動物学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Black fly control in Nakanoshima-Island, Kagoshima Prefecture, Japan2019

    • Author(s)
      Yasushi Otsuka
    • Organizer
      The 7th East Asia Island and Ocean Forum
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] The Tokara Islands: Culture, Society, Industry and Nature2020

    • Author(s)
      Yasushi Otsuka, Ryuta Terada, Satoru Nishimura
    • Total Pages
      163
    • Publisher
      Hokuto Shobo
    • ISBN
      9784892900549
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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