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Mycobacterial infection to farm-raised fishes and evaluation of food safety

Research Project

Project/Area Number 20K05899
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionTezukayama University

Principal Investigator

Fujiwara Nagatoshi  帝塚山大学, 現代生活学部, 教授 (80326256)

Co-Investigator(Kenkyū-buntansha) 前田 伸司  北海道科学大学, 薬学部, 教授 (50250212)
綾田 稔  大阪公立大学, 大学院医学研究科, 研究員 (90222702)
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抗酸菌 / Mycobacterium / 養殖魚 / 脂質生化学 / 魚類抗酸菌感染症 / Mycobacterium marinum / Mycobacterium shottsii / M. pseudoshottsii / フェノール糖脂質 / 抗酸菌感染症 / 糖脂質 / ミコール酸 / マイコラクトン
Outline of Research at the Start

近年、養殖魚から抗酸菌が頻繁に分離され、感染魚は腎・脾臓の肥大、粟粒結節を形成して感染後4-10 週で死亡する。日本の食文化を脅かす事態となっている。現状把握と予防対策を早期に講じることが希求される。
本研究では、養殖魚における抗酸菌感染症の全貌を疫学的観点から明らかにし、予防対策の基礎研究を実施する。具体的に、感染魚の実態と感染経路を重視した疫学的フィールド調査、抗酸菌特有脂質分子を用いた免疫学的迅速診断(ELISA)法の開発、ヒトへの感染リスクと食用魚の安全性評価、特徴的脂質分子の分布・偏在性と病原性の検討を行い、魚類抗酸菌感染症を学術的に解明する。

Outline of Final Research Achievements

M. pseudoshottsii, M. shottsii and M. marinum are closely related M. ulcerans, and are the causative bacteria of the fish infections. We separated and collected many clinical isolates from infected fishes and identified the bacterial species. The lipid fraction was extracted from these clinical isolates and evaluate the heterogeneity of lipids. The structures of mycolic acid subclasses and molecular species were confirmed, and the function of the M. marinum madR-KO mutant. Cord factor (trehalose-6,6'-dimycolate) expresses in common, and phenolglycolipid and mycolactone were heterogeneity. It was suggested that these glycolipids affect the host immune responses.
The epidemiological and lipid-biochemical studies of the acid-fast bacteria infected in aquaculture fish were contributed to food safety.

Academic Significance and Societal Importance of the Research Achievements

養殖魚における抗酸菌感染症の全貌を疫学的観点から理解し、抗酸菌感染魚の脂質免疫学的特徴を明らかにすることで、病原性、感染性との関連を検討した。本研究から、総合的な魚類抗酸菌感染症の現状と予防対策を検討し、食の安全性に資する基礎的知見が得られた。

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

    (25 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (11 results) Book (3 results)

  • [Int'l Joint Research] University of Birmingham(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Birmingham(英国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Birmingham(英国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] An Experimental Study on the Addition of Bacteria to Residual Anticancer Drugs: Evaluation of the Effect on Bacterial Growth2024

    • Author(s)
      Kikuchi K, Miyauchi R, Yamaguchi T, Sugiura H, Nogami T, Inoue Y, Sato H, Sato H, Fujiwara N, Maeda S.
    • Journal Title

      Japanese Journal of Infectious Diseases

      Volume: 77 Issue: 2 Pages: 61-67

    • DOI

      10.7883/yoken.JJID.2023.270

    • ISSN
      1344-6304, 1884-2836
    • Year and Date
      2024-03-29
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mycobacterium kiyosense sp. nov., a scotochromogenic slow-glowing species isolated from respiratory specimens2023

    • Author(s)
      Fukano Hanako、Kazumi Yuko、Sakagami Nobuya、Fujiwara Nagatoshi、Ato Manabu、Mitarai Satoshi、Hoshino Yoshihiko
    • Journal Title

      International Journal of Systematic and Evolutionary Microbiology

      Volume: 73 Issue: 6

    • DOI

      10.1099/ijsem.0.005917

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Neutrophil S100A9 supports M2 macrophage niche formation in granulomas.2023

    • Author(s)
      Mizutani T, Ano T, Yoshioka Y, Mizuta S, Takemoto K, Ouchi Y, Morita D, Kitano S, Miyachi H, Tsuruyama T, Fujiwara N, and Sugita M
    • Journal Title

      iScience

      Volume: 26(3) Issue: 3 Pages: 106081-106081

    • DOI

      10.1016/j.isci.2023.106081

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] The mycobacterial desaturase DesA2 is associated with mycolic acid biosynthesis.2022

    • Author(s)
      Bailo R, Radhakrishnan A, Singh A, Nakaya M, Fujiwara N, Bhatt A
    • Journal Title

      Sci Rep.

      Volume: 12(1) Issue: 1 Pages: 6943-6943

    • DOI

      10.1038/s41598-022-10589-y

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] MadR mediates acyl CoA-dependent regulation of mycolic acid desaturation in mycobacteria2022

    • Author(s)
      74.Cooper C., EJR Peterson, R. Bailo, M. Pan, A. Singh, P. Moynihan, M. Nakaya, N. Fujiwara, N. Baliga, A. Bhatt
    • Journal Title

      Proc Natl Acad Sci U S A

      Volume: 119(8) Issue: 8

    • DOI

      10.1073/pnas.2111059119

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 世界の結核研究の動向(26) 結核菌に特徴的な脂質分子と宿主応答2022

    • Author(s)
      藤原 永年
    • Journal Title

      複十字 公益財団法人結核予防会発行

      Volume: 402 Pages: 20-22

    • Related Report
      2021 Research-status Report
    • Open Access
  • [Journal Article] Fusobacterium watanabei sp. nov. as additional species within the genus Fusobacerium, isolated from human clinical specimens.2021

    • Author(s)
      Tomida J., T. Akiyama-Miyoshi, K. Tanaka, M. Hayashi, R. Kutsuna, N. Fujiwara, Y. Kawamura
    • Journal Title

      Anaerobe

      Volume: 27(69) Pages: 102323-102323

    • DOI

      10.1016/j.anaerobe.2021.102323

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fundamental cell morphologies examined with cryo-TEM of the species in the novel five genera robustly correlate with new classification in family Mycobacteriaceae.2020

    • Author(s)
      H. Yamada, K. Chikamatsu, A. Aono, K. Murata, N. Miyazaki, Y. Kayama, A. Bhatt, N. Fujiwara, S. Maeda, S. Mitarai
    • Journal Title

      Front Microbiol.

      Volume: 16(11) Pages: 562395-562395

    • DOI

      10.3389/fmicb.2020.562395

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 非結核性抗酸菌の新規血清型特異糖ペプチド脂質(GPL)生合成メカニズムに関する研究2024

    • Author(s)
      前田里緒、外川朋弥、浦本リサ、工藤綾一郎、藤原永年、前田伸司
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Mycobacterium intracellulareが発現する新規血清型特異糖ペプチド脂質(GPL)生合成反応2024

    • Author(s)
      外川朋弥、前田里緒、浦本リサ、工藤綾一郎、藤原永年、前田伸司
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 魚類感染症を引き起こす抗酸菌の脂質生化学的特徴2023

    • Author(s)
      藤原永年、中屋愼、綾田稔、深野華子、星野仁彦、前田伸司
    • Organizer
      第96回日本細菌学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Mycobacterium intracellulare Ku11株由来glycopeptidolipidの構造と糖鎖合成遺伝子の解析2022

    • Author(s)
      前田伸司、中屋愼、山田博之、山本三郎、藤原永年
    • Organizer
      第97回日本結核・非結核性抗酸菌症学会総会・学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] らい菌は宿主細胞由来トリアシルグリセロールを利用してミコール酸を合成する2022

    • Author(s)
      谷川和也、林康広、川島晃、桐谷光夫、中村康宏、藤原葉子、藤原永年、唐澤健、鈴木幸一
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 偏性細胞内寄生細菌であるらい菌がtriacylglycerolを利用してミコール酸を合成する可能性の検討2022

    • Author(s)
      谷川和也、林康広、藤原永年、川島晃、桐谷光夫、中村康宏、藤原葉子、唐澤健、鈴木幸一
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 非結核性抗酸菌の形態に影響する糖ペプチド脂質抗原の発現と宿主応答機序2022

    • Author(s)
      藤原永年、中崇、綾田稔、宮本友司、山本三郎、前田伸司
    • Organizer
      第95回日本細菌学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Mycobacterium marinumおよび近縁抗酸菌の脂質生化学的特徴2021

    • Author(s)
      藤原永年、中屋愼、山田博之、前田伸司、山本三郎、深野華子、吉田光範、星野仁彦
    • Organizer
      第96回日本結核・非結核性抗酸菌症学会総会・学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] クレソンに含まれるウレア化合物の摂取がマウス血中エイコサノイドに与える影響2021

    • Author(s)
      中屋慎、中上拓海、濱野未宇、藤原永年、庄條愛子、北村進一
    • Organizer
      日本農芸化学会2021年度大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 臨床分離株Mycobacterium intracellulare Ku11株由来新規糖ペプチド脂質抗原の糖鎖延長遺伝子群解析2021

    • Author(s)
      藤原永年、中屋愼、宮本友司、綾田稔、中崇、前田伸司
    • Organizer
      第94回日本細菌学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 魚類感染するMycobacterium ulcerans近縁抗酸菌の脂質生化学的特徴2020

    • Author(s)
      藤原永年、中屋愼、山本三郎、水野淨子、宮本友司、吉田光範、深野華子、前田伸司、星野仁彦
    • Organizer
      第95回日本結核・非結核性抗酸菌症学会総会
    • Related Report
      2020 Research-status Report
  • [Book] BCG 2nd Edition -TB vaccine- Application against tuberculosis and other diseases. In T. Takii, J. Maeyama, S. Yamamoto (ed.)2022

    • Author(s)
      Fujiwara, N
    • Total Pages
      20
    • Publisher
      Japan Anti-Tuberculosis Association
    • ISBN
      9784874513217
    • Related Report
      2022 Research-status Report
  • [Book] ゼロからわかる栄養系微生物学2021

    • Author(s)
      藤原永年、岩田建
    • Total Pages
      184
    • Publisher
      (株)南江堂
    • Related Report
      2021 Research-status Report
  • [Book] エキスパート管理栄養士養成シリーズ12 食品衛生学(第4版)2020

    • Author(s)
      藤原永年、甲斐達男、小林秀光 他
    • Total Pages
      216
    • Publisher
      (株)化学同人
    • ISBN
      9784759821512
    • Related Report
      2020 Research-status Report

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

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