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エキノコックス症における寄生虫の発育分化と宿主免疫応答の動的解析

Research Project

Project/Area Number 19041009
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionAsahikawa Medical College

Principal Investigator

伊藤 亮  Asahikawa Medical College, 医学部, 教授 (70054020)

Co-Investigator(Kenkyū-buntansha) 中谷 和宏  旭川医科大学, 医学部, 准教授 (70109388)
中尾 稔  旭川医科大学, 医学部, 准教授 (70155670)
迫 康仁  旭川医科大学, 医学部, 助教 (40312459)
柳田 哲矢  旭川医科大学, 医学部, 助教 (40431837)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥7,900,000 (Direct Cost: ¥7,900,000)
Fiscal Year 2008: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2007: ¥3,900,000 (Direct Cost: ¥3,900,000)
Keywordsエキノコックス症 / エキノコックス症病態と抗体応答 / 遺伝子多型 / 新種エキノコックスの幼虫発育 / RecEml8-ELISA / RecAgB8 / 1-ELISA / 寄生虫 / 遺伝子 / 感染症 / 酵素 / 分類
Research Abstract

エキノコックス症(多包虫症、単包虫症)における1)宿主の免疫応答性解析ならびに2)寄生虫の遺伝子解析、3)新種Echinoccus shiquicusと他のエキノコックスの発育動態比較観察を中心に研究を実施した。1)WHOは多包虫症、単包虫症の病態をそれぞれPNMstage I〜IV, CL〜CE5と定義している。病態が正確に把握されている多数の多包虫症血清、単包虫症血清についてドイツのPKern教授、イタリアのE Brunetti教授の研究グループからそれぞれ提供を受けた。エキノコックス症感染動態とTotal IgGの動態解析を実施し、それぞれ共著論文を作成し、投稿した。RecEm18-ELISAが多包虫症の感染動態を正確に評価できる抗体指標になること、RecAgB8/1-ELISAが単包虫症の感染動態、特に活性病巣を有している症例のほぼ90%を検出できることが判明した。現在は、IgG subclass, IgE応答を解析中である。2)ミトコンドリアならびに核遺伝子を用いるエキノコックス属条虫種の再評価を実施し、アフリカライオンに寄生している種を独立種(Echinococcus felidis)として再記載した。ヨーロッパ、南米、中国に分布しているいわゆる単包条虫(E. granulosus sensu strict)ならびに北半球に分布している多包条虫(E. multilocularis)、中国チベット高原から発見された新種エキノコックス条虫(E. shiquicus)の遺伝子多型を解析し、E. shiquicusが遺伝子多型に富んでいるのに対し、他の2種では地域を問わずほぼ均一の遺伝子型が中心になっていることが判明した。3)E. shiquicus幼虫の形態は他の条虫と大きく異なっていることが判明した。中国に分布しているエキノコックス条虫3種の発育様式の比較、公衆衛生学的に重要な多包虫症、単包虫症の病態と抗体応答のさらなる解析が今後の課題である。

Report

(2 results)
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (27 results)

All 2009 2008 2007

All Journal Article (13 results) (of which Peer Reviewed: 12 results) Presentation (9 results) Book (5 results)

  • [Journal Article] Close relationship between clinical regression and specific serology in the follow-up of patients with alveolar echinococcosis in different clinical stages2009

    • Author(s)
      Tappe D, Frosch M, Sako Y, Itoh S, Gruner B, Reuter S, Nakao M, Ito A, Kern P
    • Journal Title

      American Journal of Tropical Medicine and Hygiene 80(In press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular identification of Echinococcus isolates from Peru2009

    • Author(s)
      Moro PL, Nakao M, Ito A, Scha ntz PM, Cavero C, Cabrera L
    • Journal Title

      Parasitology International 58(In press)

    • NAID

      10027669139

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genetic characterization and phylogenetic position of Echinococcus felidis Ortlepp, 1937 (Cestoda : Taeniidae) from the African lion2008

    • Author(s)
      Huttner M, Nakao M, Wasserma nn T, Siefert L, Boomker JDF, Dinkel A, Sako Y, Mackenstedt U, Romig T, Ito A
    • Journal Title

      International Journal for Parasitology 38

      Pages: 861-868

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genetic analysis of Echinococcus multilocularis originating from a natient with alveolar echinococcosis occurring in Minesota in 19772008

    • Author(s)
      Yamasaki H, Nakao M, Nakaya K, Schantz PM, Ito A
    • Journal Title

      American Journal of Tropical Medicine and Hygiene 79

      Pages: 245-247

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Species identification of human echinococcosis using histopathology and genotyping in northwestern China2008

    • Author(s)
      Li T, Ito A, Nakaya K, Qiu JM, Nakao M, Zhen R, Xiao N, Ch en XW, Giraudoux P, Craig PS
    • Journal Title

      Transactions of the Royal Society of Tropical Medicine and Hygiene 102

      Pages: 585-590

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of three PCR assays for the identification of the sheep strain (genotype 1) of Echinococcus granulosus in canid feces and parasite tissues2008

    • Author(s)
      Boufana BS, Campos-Ponce M, Naidich A, Buishi I, Lahmar S, Zeyhle E, Jenkins DJ, Combes B, Wen H, Xiao N, Nakao M, Ito A. Qiu J. Craig PS
    • Journal Title

      American Journal of Tropical Medicine and Hygiene 78

      Pages: 777-783

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 医学と医療め最前線エキノコックス症に関する診断法の進展2008

    • Author(s)
      伊藤亮、中尾稔、迫康仁、中谷和宏、石川裕司、柳田哲矢
    • Journal Title

      日本内科学会雑誌 97

      Pages: 1900-1909

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Echinococcosis: serological detection of patients and molecular identification of parasites2007

    • Author(s)
      Ito A, Nakao M, Sako Y
    • Journal Title

      Future Microbiology 2

      Pages: 439-449

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular characterization of a novel gene encoding an 8-kDa subunit of antigen B from Echinococcus granulosus genotypes 1 and 62007

    • Author(s)
      Mamuti W, Sako Y, Bart JM, Nakao M, Ma X, Wen H, Ito A
    • Journal Title

      Parasitology International 56

      Pages: 313-316

    • NAID

      10019777829

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cloning and characterization of cathepsin L-like peptidases of Echinococcus multilocularis metacestodes2007

    • Author(s)
      Sako Y, Yamasaki H, Nakaya K, Nakao M, Ito A
    • Journal Title

      Molecular and Biochemical Parasitology 154

      Pages: 181-189

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Assessment of microsatellite polymorphism for improving the spatial distribution of Echinococcus multilocularis2007

    • Author(s)
      Knapp J, Bart JM, Glowatzki ML, Ito A, Gerard S, Maillard S, Piarroux R, Gottstein B
    • Journal Title

      Journal of Clinical Microbiology 45

      Pages: 2943-2950

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The molecular phylogeny of Echinococcus tapeworms based on complete mitochondrial genomic sequences2007

    • Author(s)
      Nakao M, McManus DP, Schant z PM, Craig PS, Ito A
    • Journal Title

      Parasitology 134

      Pages: 713-722

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] エキノコックス症に関する診断法の進展2007

    • Author(s)
      伊藤亮、迫康仁、中尾稔、中谷和宏
    • Journal Title

      Lab CP 25

      Pages: 74-83

    • NAID

      120001025420

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Topics on cestode zoonosis : Echinococcus and echinococcosis2009

    • Author(s)
      Ito A
    • Organizer
      43^<rd> US-Japan Joint Conference on Parasitic Diseases
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2009-01-07
    • Related Report
      2008 Annual Research Report
  • [Presentation] Key note speech on Echinococcosis : Serological detection of patients and animals2008

    • Author(s)
      Ito A
    • Organizer
      17^<th> International Congress for Tropical Medicine and Malaria
    • Place of Presentation
      Cheju, Korea
    • Year and Date
      2008-09-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] Echinococcosis : Serodiagnosis for detection of patients and molecular identification of parasites2008

    • Author(s)
      Ito A
    • Organizer
      10^<th> European Multicolloquium of Parasitology
    • Place of Presentation
      Paris, France
    • Year and Date
      2008-08-25
    • Related Report
      2008 Annual Research Report
  • [Presentation] Echinococcosis: serological detection of patients and molecular identification of parasites2008

    • Author(s)
      Ito A
    • Organizer
      US-Japan Parasitology workshop
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2008-01-16
    • Related Report
      2007 Annual Research Report
  • [Presentation] Echinococcus species: genotypic variation and evolutionary perspectives2007

    • Author(s)
      Nakao M
    • Organizer
      US-NIH Ecology and evolution of Infectious Diseases PI Meeting
    • Place of Presentation
      New Mexico, USA
    • Year and Date
      2007-12-05
    • Related Report
      2007 Annual Research Report
  • [Presentation] Serodiagnosis of human echinococcosis2007

    • Author(s)
      Ito A
    • Organizer
      WHO Echinococcosis Guideline meeting
    • Place of Presentation
      Besancon, France
    • Year and Date
      2007-09-28
    • Related Report
      2007 Annual Research Report
  • [Presentation] Introduction to the symposium on cestode zoonoses in Asia and the Pacific2007

    • Author(s)
      Ito A
    • Organizer
      21st Pacific Scientific Congress
    • Place of Presentation
      沖縄
    • Year and Date
      2007-06-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] The contribution of mitochondrial genomics to the phylogeny and epidemiology of zoonotic tapeworms2007

    • Author(s)
      Nakao M
    • Organizer
      21st Pacific Scientific Congress
    • Place of Presentation
      沖縄
    • Year and Date
      2007-06-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] Diagnosis of echinococcosis in humans2007

    • Author(s)
      Ito A
    • Organizer
      20th International Congress of Echinococcosis
    • Place of Presentation
      Athens
    • Year and Date
      2007-05-17
    • Related Report
      2007 Annual Research Report
  • [Book] Handbook of Nucleic Acid Purification (ed. by Liu D) Chapter 13. Purification of nucleic acids from helminthes. 271-2912009

    • Author(s)
      Okamoto M, Ito A
    • Publisher
      CRC Press, Taylor & Francis Group(In press)
    • Related Report
      2008 Annual Research Report
  • [Book] Food-born Pathogens (ed. by Liu D) Chapter 62. Taeniasis. 827-8382009

    • Author(s)
      Ito A, Nakao M, Sako Y, Nakaya K, Yanagida. T, Okamoto M
    • Publisher
      CRC Press, Taylor & Francis Group(In press)
    • Related Report
      2008 Annual Research Report
  • [Book] Clinical Neurocysticercosis Immunodiagnosis and molecular diagnosis for cysticercosis : usefulness of cerebrospiral fluid (CSF) and serum samples2009

    • Author(s)
      Ito A, Takayanagui OM
    • Publisher
      The World Federation of Neurocysticercosis(In press)
    • Related Report
      2008 Annual Research Report
  • [Book] Zoonoses Taenia solium, Taenia saginata and Taenia asiatica2009

    • Author(s)
      Flisser A, Craig PS, Ito A
    • Publisher
      Oxford University Press(In press)
    • Related Report
      2008 Annual Research Report
  • [Book] Parasites of Laboratory Animals2007

    • Author(s)
      Ito A, Baker DG
    • Total Pages
      840
    • Publisher
      Blackwell Publishing
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2018-03-28  

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