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Prevention for bovine protothecal mastitis by Next-generation sequencing analysis

Research Project

Project/Area Number 17K08110
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Veterinary medical science
Research InstitutionNihon University

Principal Investigator

KANO Rui  日本大学, 生物資源科学部, 准教授 (00318388)

Co-Investigator(Kenkyū-buntansha) 鈴木 一由  酪農学園大学, 獣医学群, 教授 (30339296)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsプロトテカ乳房炎 / メタゲノム解析 / 乳汁 / シアノバクテリア / 細菌叢 / 藻類 / 乳房炎 / プロトテカ / 乳牛 / 次世代シーケンサー / 乳房内細菌叢 / 牛乳房炎
Outline of Final Research Achievements

The aim of the present study was to evaluate the bacterial flora in the udder and intestinal environments in cows with and without protothecal mastitis. We used next-generation sequencing (NGS) analysis to identify 16S rRNA genes from bacterial flora present in milk and feces samples from protothecal mastitic and healthy dairy cows in the Aichi and Hokkaido regions of Japan. Calothrix desertica (a cyanobacterium) showed higher prevalence in milk from cows with protothecal mastitis than in that from healthy cows.
Ravuconazole (RVZ) is a new available human azole drug in Japan since 2018 and broad-spectrum antifungal agent. In the present study, the in vitro susceptibility of clinical and environmental isolates of P. wickerhamii, P. zopfii and P. blaschkeae to itraconazole, voriconazole, posaconazole and RVZ. RVZ was more potent than the other azoles against Protheca species and has considerable potential for use as a therapeutic agent for human and animal protothecosis.

Academic Significance and Societal Importance of the Research Achievements

国内におけるプロトテカ乳房炎乳汁と非乳房炎では、シアノバクテリアが優位に乳房炎乳汁中から検出されることが初めて確認された。藻類のプロトテカ乳房炎は、プロトテカが乳房内で異常に増殖して、乳房炎を引き起こしているだけではなく、乳房内微生物環境まで変化させていることを明らかにしたことは、本研究目的で予想された乳房炎解明への新たな知見となると考えている。 またプロトテカ乳房炎の新規防除法の候補として、2018年に国内で上市されたアゾール系薬剤のラブコナゾールを今後のプロトテカ乳房炎、さらに人の感染症に対する治療薬としても期待される。このように治療法についても、研究目的を十分上回る結果が得られた。

Report

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

    (10 results)

All 2019 2018 2017 Other

All Journal Article (6 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (1 results) (of which Invited: 1 results) Remarks (2 results) Funded Workshop (1 results)

  • [Journal Article] Next-generation sequencing analysis of bacterial flora in bovine protothecal mastitic milk and feces2019

    • Author(s)
      MIURA Ayumi、KURUMISAWA Tomomi、KANO Rui、ITO Takaaki、SUZUKI Kazuyuki、KAMATA Hiroshi
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 81 Issue: 11 Pages: 1547-1551

    • DOI

      10.1292/jvms.18-0649

    • NAID

      130007744345

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Emergence of Fungal-Like Organisms: Prototheca2019

    • Author(s)
      Kano R
    • Journal Title

      mycopathologia

      Volume: 185 Issue: 5 Pages: 747

    • DOI

      10.1007/s11046-019-00365-4

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In vitro algaecid effect of itraconazole and ravuconazole on Prototheca species2019

    • Author(s)
      Miura A, Kano R, Ito T, Suzuki K, Kamata H.
    • Journal Title

      Medical Mycology

      Volume: 58 Issue: 6 Pages: 845

    • DOI

      10.1093/mmy/myz119

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Is bovine protothecal mastitis related to persistent infection in intestine?2018

    • Author(s)
      KURUMISAWA Tomomi、KANO Rui、NAKAMURA Yuta、HIBANA Maki、ITO Takaaki、KAMATA Hiroshi、SUZUKI Kazuyuki
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 80 Issue: 6 Pages: 950-952

    • DOI

      10.1292/jvms.17-0710

    • NAID

      130007412697

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Next-generation Sequencing Analysis of Bacterial Flora in Bovine <I>Prototheca</I> Mastitic Milk2018

    • Author(s)
      Kano Rui、Kobayashi Yuki、Nishikawa Akitoyo、Murata Ryo、Itou Takuya、Ito Takaaki、Suzuki Kazuyuki、Kamata Hiroshi
    • Journal Title

      Medical Mycology Journal

      Volume: 59 Issue: 3 Pages: E41-E46

    • DOI

      10.3314/mmj.18-00004

    • NAID

      130007473068

    • ISSN
      2185-6486, 2186-165X
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Is bovine protothecal mastitis related to persistent infection in intestine?2018

    • Author(s)
      Kurumisawa T, Kano R, Nakamura Y, Hibana M, Ito T, Kamata H, Suzuki K.
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 印刷中

    • NAID

      130007412697

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] プロトテカ症-微細藻類による感染2017

    • Author(s)
      加納 塁
    • Organizer
      第61回日本医真菌学会総会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Remarks] ISHAM Medical Phycology

    • URL

      https://medicalphycology.org/

    • Related Report
      2019 Annual Research Report
  • [Remarks] ISHAM Medical Phycology

    • URL

      http://medicalphycology.org/

    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Funded Workshop] International Society for Human and Animal Mycology (ISHAM)2018

    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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