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Rapid detection method combining MALDI TOF MS and comprehensive drug resistance gene analysis of CPE

Research Project

Project/Area Number 18K19698
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 58:Society medicine, nursing, and related fields
Research InstitutionInternational University of Health and Welfare

Principal Investigator

Funashima Yumiko  国際医療福祉大学, 福岡保健医療学部, 講師 (70752814)

Co-Investigator(Kenkyū-buntansha) 永沢 善三  国際医療福祉大学, 福岡保健医療学部, 教授 (80706820)
佐藤 謙一  国際医療福祉大学, 福岡保健医療学部, 准教授 (90505687)
Project Period (FY) 2018-06-29 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
KeywordsLAMP法 / カルバペネマーゼ産生腸内細菌目細菌 / CPE / カルバペネマーゼ / MALDI-TOF MS / 迅速検査 / 薬剤耐性菌
Outline of Final Research Achievements

The worldwide spread of gram-negative bacilli resistant to carbapenem antibacterial agents has become a problem in the treatment of infectious diseases of drug-resistant bacteria. The production of carbapenemase involve a major role in this resistance mechanism. In this study, we worked on the development of a LAMP method that comprehensively detects the five major families of carbapenemase that hydrolyze carbapenem antibacterial drugs, which are considered to be the "last key" in antibacterial drug treatment. As a result, we succeeded in designing primers that can handle many mutation types in bla IMP, bla KPC, bla VIM, bla NDM, and bla OXA-48.
However, in the verification experiment, since all the strains of each mutation type were not possessed, the verification of the limited mutation type was performed.

Academic Significance and Societal Importance of the Research Achievements

CDCの予測では、世界的な死亡者数は悪性新生物を抜いて2050年度には薬剤耐性菌感染症が1000万人に達すると報告している。特にカルバペネム抗菌薬に耐性を示すグラム陰性桿菌の蔓延が問題となっている。薬剤耐性菌の蔓延を予防する早期の検出が極めて重要となる。本研究ではLAMP法を基本原理とし、開発途上国でも高額な機器を使用せず、かつ可能な限り変異した遺伝子タイプでも網羅的に検出するシステムの開発を実施した。その結果、増幅反応にヒートブロックを応用することで特殊な測定機器を使用せずに、カルバペネム系抗菌薬を加水分解するカルバペネマーゼ主要5ファミリーを網羅的に遺伝子にて検出することに成功した。

Report

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

    (2 results)

All 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (1 results)

  • [Journal Article] LAMP法を用いた簡易・迅速なCarbapenemase Big Five Gene 分析の試み2018

    • Author(s)
      船島由美子、菅原和行、平田雄哉、加藤匡平、佐藤謙一、佐々木泰治、永沢善三、梅村創
    • Journal Title

      JARMAM

      Volume: 28巻 Pages: 77-83

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 分離株を用いたLAMP法Carbapenemase blaIMPgene検出法の評価2019

    • Author(s)
      船島由美子、平田雄哉、加藤匤平、花岩洋樹、成田妙子、真藤和弘、佐藤謙一、菅原和行、宮本比呂志、梅村創、永沢善三
    • Organizer
      第30回日本臨床微生物学会・学術集会
    • Related Report
      2018 Research-status Report

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Published: 2018-07-25   Modified: 2022-01-27  

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