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Development of early diagnosis of leptospirosis

Research Project

Project/Area Number 17K08820
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Bacteriology (including mycology)
Research InstitutionGunma University

Principal Investigator

Hayashi Fumio  群馬大学, 研究・産学連携推進機構, 准教授 (60400777)

Co-Investigator(Kenkyū-buntansha) 中村 修一  東北大学, 工学研究科, 助教 (90580308)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsレプトスピラ / べん毛 / 細菌 / 感染症 / 診断法
Outline of Final Research Achievements

Since the cells of leptospira are covered with the envelope, in order to specifically identify the leptospira, the envelope must be destroyed, the flagellar filaments must be exposed. Although a method for isolating flagellar filamets have been established, the amount of flagellar filamets that can be isolated by the method is very small and not suitable for high-sensitivity detection. We succeeded in exposing the flagellar filamets by alkaline-based solutions. However, the amount is still less than the desired amount, and it is necessary to further pursue the exposure conditions and preparation conditions of flagellar filamets.

Academic Significance and Societal Importance of the Research Achievements

レプトスピラ症は、大雨災害の後や屋外水上レジャーを楽しむ際に「最も注意すべき感染症」の一つとして注意喚起されています。沖縄県で川遊びをしていた小中学生が集団感染をしたり,東南アジアや南米などでは毎年数千人が感染するほどの一般的な感染症であり、重症化(ワイル症)すると死亡率は30%にも及びます。このようにレプトスピラ症は身近になりつつあり,危険性をはらんだ細菌感染症です。しかし、様々な理由で予防が困難なことから、レプトスピラ症は早期診断と早期治療が求められています。
これまでとは全く異なるアプローチで早期診断法の開発にの望みましたが、成果を出すためにはさらなるトライが必要です。

Report

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

    (1 results)

All 2017

All Presentation (1 results)

  • [Presentation] レプトスピラべん毛繊維の大量調製と多型変換2017

    • Author(s)
      田中暢晃,寺脇慎一,林史夫,若松馨
    • Organizer
      生命科学系学会合同年次大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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