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Development of an innovative differential diagnosis method for diphyllobothriasis and taeniasis

Research Project

Project/Area Number 20K08816
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54030:Infectious disease medicine-related
Research InstitutionAsahikawa Medical College

Principal Investigator

Sako Yasuhito  旭川医科大学, 医学部, 教授 (40312459)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords裂頭条虫 / テニア条虫 / 鑑別診断 / POCテスト
Outline of Research at the Start

本研究の目的は、寄生虫の鑑別診断を臨床現場あるいは流行現場で実施するために、特殊な装置を使用せずに実施でき、複数の寄生虫を同時に鑑別診断できる方法の基盤を構築することである。まずはヒトの条虫症(裂頭条虫症およびテニア症)に的を絞り、条虫の種特異的なDNAを増幅する方法を開発するとともに、イムノクロマトグラフィー(ICT)の手法を用いて、電気泳動をすることなしに増幅DNAを分別検出する方法を開発する。

Outline of Final Research Achievements

In this study, differential diagnosis methods of parasites in clinical and endemic fields were developed. Differential diagnostic methods developed combines a differential DNA detection method for three Dibothriocephalus species and three Taenia species using the LAMP method with a method for differential detection of amplified DNA by ICT. The species-specific DNA amplification test using the LAMP method targeted the mitochondrial gene COX1. In addition, the 5' end of the primer was labeled with FITC, biotin, and DIG to enable differential detection of amplified DNA by ICT. Accuracy analyses by using Dibothriocephalus DNA, Taenia DNA, and other parasite DNA revealed that the differential diagnosis methods developed in this study have high specificity.

Academic Significance and Societal Importance of the Research Achievements

寄生虫を鑑別診断することは「臨床と公衆衛生」にとって非常に重要である。本研究課題で開発した鑑別診断法は寄生虫検査の経験のない人でも迅速かつ簡便に寄生虫を鑑別診断でき、さらに社会実装できる高感度なpoint-of-careテスト(POCT)である。また、本研究の成果はウイルス、細菌、原虫、吸虫、線虫などの感染症の、汎用性の高い簡便で迅速な病原体同定法の開発に容易に応用でき、社会に与えるインパクトは大きい。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] マヒドン大学/コンケーン大学(タイ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ウダヤナ大学/Sari Mutiara Indonesia 大学/スマトラ・ウタラ大学(インドネシア)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Molecular identification of <i>Spirometra</i> infections in companion animals and wildlife in Japan2024

    • Author(s)
      YAMASAKI Hiroshi、SUGIYAMA Hiromu、MORISHIMA Yasuyuki、SAKO Yasuhito
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 86 Issue: 4 Pages: 409-412

    • DOI

      10.1292/jvms.23-0475

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development and evaluation of an immunochromatography-based point-of-care test kit for a rapid diagnosis of human cysticercosis2023

    • Author(s)
      Sadaow Lakkhana、Boonroumkaew Patcharaporn、Rodpai Rutchanee、Janwan Penchom、Sanpool Oranuch、Thanchomnang Tongjit、Morishima Yasuyuki、Sato Marcello Otake、Sako Yasuhito、Kobayashi Kaoru、Iwai Misako、Maleewong Wanchai、Yamasaki Hiroshi、Intapan Pewpan M.
    • Journal Title

      Food and Waterborne Parasitology

      Volume: 33 Pages: e00211-e00211

    • DOI

      10.1016/j.fawpar.2023.e00211

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dibothriocephalus nihonkaiensis Incidentally Detected at Colonoscopy2022

    • Author(s)
      Kubo Kimitoshi、Kato Mototsugu、Sako Yasuhito
    • Journal Title

      Clinical Gastroenterology and Hepatology

      Volume: - Issue: 7 Pages: e1518-e1518

    • DOI

      10.1016/j.cgh.2022.01.005

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Origin of the pork tapeworm Taenia solium in Bali and Papua, Indonesia2021

    • Author(s)
      Yanagida Tetsuya、Swastika Kadek、Dharmawan Nyoman Sadra、Sako Yasuhito、Wandra Toni、Ito Akira、Okamoto Munehiro
    • Journal Title

      Parasitology International

      Volume: 83 Pages: 102285-102285

    • DOI

      10.1016/j.parint.2021.102285

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 環境DNA手法を用いたフィリピン、レイテ島、エキラン村における日本住血吸虫症の感染リスク評価2023

    • Author(s)
      ヴァレンシア ジョセフ、サトウ マルセロ オオタケ、パブロ アーチー、キムソン マリオ、セルバンテス エレノアー、ジズ マリオ、迫 康仁、サトウ 恵
    • Organizer
      第93回日本寄生虫学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 環境DNA手法を用いたフィリピン、レイテ島、エキラン村における日本住血吸虫中間宿主Oncomelania hupensis quadrasiのハザードマップ作成2023

    • Author(s)
      レヴォルテアド マーク ジューン、サトウ マルセロ オオタケ、ジズ マリオ、セルバンテス エレノアー、パブロ アーチー、キムソン マリオ、迫 康仁、サトウ 恵
    • Organizer
      第93回日本寄生虫学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 多包虫由来物質がヒトの肝細胞に及ぼす影響の解明2023

    • Author(s)
      伴戸 寛徳、迫 康仁
    • Organizer
      第93回日本寄生虫学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヒトのiPS由来神経細胞内におけるトキソプラズマのステージ変換機構の解明2023

    • Author(s)
      伴戸寛徳、迫 康仁、福田康弘、加藤健太郎
    • Organizer
      日本寄生虫学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Next steps of eDNA towards the control of schistosomiasis2022

    • Author(s)
      Maecello Otake Sato, サトウ 恵、迫 康仁
    • Organizer
      International Congress of Tropical Medicine and Malaria
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Environmental DNA and risk mapping in schistosomiasis2022

    • Author(s)
      Marcello Otake Sato, サトウ 恵、迫 康仁
    • Organizer
      International Congress of Parasitology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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