• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Role of bats for the distribution of New World relapsing fever borreliae in Zambia.

Research Project

Project/Area Number 19K15992
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Qiu Yongjin  北海道大学, 人獣共通感染症国際共同研究所, 助教 (00760985)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywordsボレリア / ザンビア / コウモリ / 回帰熱 / real time PCR / アフリカ
Outline of Research at the Start

アフリカのザンビアで発熱患者ならびにコウモリからヒト病原性新世界型回帰熱ボレリアの分離に世界で初めて成功した。しかし、なぜ北米大陸にのみ分布する新世界型回帰熱ボレリアがアフリカ大陸(旧世界)に分布しているのか、また、その多様性は未だ明らかとなっていない。本研究では、ザンビアにおけるコウモリの回帰熱ボレリアに対する血清疫学調査と分子生物学的調査ならびに菌体分離と次世代シーケンス解析を通じて同地域の新世界型回帰熱ボレリアの多様性やその分布・拡散にコウモリが関与しているかを明らかにする。

Outline of Final Research Achievements

For the screening of Borrelia, 293 bat samples from 4 different location in Zambia were used in this study. Sixteen samples were positive for borrelia specific PCR. Subsequent sequence analysis revealed that Borrelia fainii, a New-World relapsing fever borrelia, were detected in 12 samples (6 Rousettus aegyptiacus, 1 Miniopterus fraterculus, 3 Eidolon helvum, 1 Epomophorus crypturus, and 1 Nycteris thebaica). While, Lyme diseases Borrelia was detected in four samples (3 N. thebaica,1 E. helveum).
In this study, we detected Borrelia fainii in several bat species from different sampling location. This is suggested that several bat species might be involved in the distribution of Borrelia fainii in Zambia.

Academic Significance and Societal Importance of the Research Achievements

本研究では、ザンビアの複数のコウモリ種からボレリア属細菌が検出されており、ボレリア属細菌の分布や拡散にコウモリが深くかかわっていると推察された。一方で、これらのコウモリの生態は十分に解明されておらず、国境を越えてコウモリが移動し、他国にもボレリア属細菌が分布しているのかなど生態学など他分野と協力したさらなる研究が必要である。また、ELISA法に関しては、別の標的と成る抗原蛋白を探すなど、今後手法の開発・改良が必要であると考えられた。さらに、ライム病ボレリア群のボレリア属細菌がコウモリから検出された。アフリカにおけるライム病ボレリア群の検出報告は少なく、今後も継続した研究が期待される。

Report

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

    (9 results)

All 2021 2020 2019 Other

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

  • [Int'l Joint Research] ザンビア大学(ザンビア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ザンビア大学/ザンビア野生動物局(ザンビア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] ザンビア大学/ザンビア野生動物局(ザンビア)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Evidence of Borrelia theileri in Wild and Domestic Animals in the Kafue Ecosystem of Zambia2021

    • Author(s)
      Qiu Yongjin、Squarre David、Nakamura Yukiko、Lau Alice C. C.、Moonga Lavel Chinyama、Kawai Naoko、Ohnuma Aiko、Hayashida Kyoko、Nakao Ryo、Yamagishi Junya、Sawa Hirofumi、Namangala Boniface、Kawabata Hiroki
    • Journal Title

      Microorganisms

      Volume: 9 Issue: 11 Pages: 2405-2405

    • DOI

      10.3390/microorganisms9112405

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rickettsia spp. and Ehrlichia spp. in Amblyomma ticks parasitizing wild amphibious sea kraits and yellow-margined box turtles in Okinawa, Japan2021

    • Author(s)
      Yongjin Qiu, Noriko Kidera, Masaki Hayashi, Kanta Fujishima, Hisao Tamura
    • Journal Title

      Ticks and Tick Borne Diseases

      Volume: 12 Issue: 2 Pages: 101636-101636

    • DOI

      10.1016/j.ttbdis.2020.101636

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Isolation of Candidatus Bartonella rousetti and Other Bat-associated Bartonellae from Bats and Their Flies in Zambia2020

    • Author(s)
      Qiu Yongjin、Kajihara Masahiro、Nakao Ryo、Mulenga Evans、Harima Hayato、Hang’ombe Bernard Mudenda、Eto Yoshiki、Changula Katendi、Mwizabi Daniel、Sawa Hirofumi、Higashi Hideaki、Mweene Aaron、Takada Ayato、Simuunza Martin、Sugimoto Chihiro
    • Journal Title

      Pathogens

      Volume: 9 Issue: 6 Pages: 469-469

    • DOI

      10.3390/pathogens9060469

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ザンビアにおける新世界型回帰熱ボレリアの発見とコウモリの役割2020

    • Author(s)
      邱 永晋
    • Organizer
      第6回北大・部局横断シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Candidatus Borrelia fainii ~アフリカで発見された新世界型回帰熱ボレリア~2019

    • Author(s)
      邱 永晋
    • Organizer
      第27回ダニと疾患のインターフェイスに関するセミナー
    • Related Report
      2019 Research-status Report
  • [Presentation] Human borreliosis caused by a novel New World relapsing fever borrelia in the Afrotropic ecozone2019

    • Author(s)
      Yongjin Qiu,Ryo Nakao,Bernard Mudenda Hangombe,Kozue Sato,Masahiro Kajihara, Sharon Kanchela,Ayato Takada,Hirohumi Sawa,Chihiro Sugimoto,Hiroki Kawabata
    • Organizer
      第60回日本熱帯医学会
    • Related Report
      2019 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi