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2010 Fiscal Year Annual Research Report

世界におけるエキノコックス、テニア条虫の種分化、分子共進化研究

Research Project

Project/Area Number 21256003
Research InstitutionAsahikawa Medical College

Principal Investigator

伊藤 亮  旭川医科大学, 医学部, 教授 (70054020)

Co-Investigator(Kenkyū-buntansha) 中尾 稔  旭川医科大学, 医学部, 准教授 (70155670)
中谷 和宏  旭川医科大学, 医学部, 准教授 (70109388)
迫 康人  旭川医科大学, 医学部, 講師 (40312459)
柳田 哲矢  旭川医科大学, 医学部, 助教 (40431837)
岡本 宗裕  京都大学, 霊長類研究所, 教授 (70177096)
Keywordsエキノコックス条虫 / テニア条虫 / 遺伝子分類 / ミトコンドリア遺伝子 / 核遺伝子 / 地理拡散
Research Abstract

中国、モンゴル、インドネシア、タイでテニア条虫、エキノコックス条虫のサンプリングならびに疫学調査を実施した。中国、四川省では無鉤条虫とアジア条虫の交雑個体が新たに発見された。交雑個体が発育すると期待されるブタの検査を実施したが、雑種個体の幼虫はまだ発見されていない。モンゴル北西地域でのエキノコックス条虫調査を実施したが、まだ発見に至らない。猟師に依頼し冬場にキツネ、オオカミの買い入れを実施し、これから剖検する段階である。エキノコックス症患者病理標本を用いる遺伝子解析から多包条虫、単包条虫にモンゴル特有の遺伝子系の存在が判明し始めている。インドネシア、バリ島における10年間の調査で遂に北東部の山村で有鉤条虫症患者が初めて発見された。嚢虫症流行に関する疫学調査が期待される。タイ北西地域のTaq県、ミャンマー国境沿いのカレン族住民から多数の有鉤条虫症患者が発見された。嚢虫症流行に関する疫学調査が必要である。以上、アジア各国で致死的な嚢虫症を引き起こす有鉤条虫の分布地域(村落)を特定できた。有鉤条虫の遺伝子解析から国ごとに特徴ある遺伝子が見つかっており、嚢虫症患者がどの国で感染したかを特定できる可能性が確認された。ロシア人研究者を招へいし、ロシアにおける上記条虫に関する遺伝子解析が進展し、中国、モンゴル、ロシア、カザフスタン、キルギスタン地域における遺伝子解析が可能になった。エチオピアから入手したテニア条虫の遺伝子解析から新種テニア条虫が発見されている。またマダガスカルから入手した有鉤条虫の遺伝子解析から、アジア型とアフリカ型が混在すること、両型間の中間型(交雑個体)も発見された。これは寄生虫の生殖戦略上大きな発見になる。

  • Research Products

    (23 results)

All 2011 2010

All Journal Article (21 results) (of which Peer Reviewed: 21 results) Book (2 results)

  • [Journal Article] Echinococcus multilocularis : identification and functional characterization of cathepsin B-like peptidases from metacestode2011

    • Author(s)
      Sako Y, et al.
    • Journal Title

      Experimental Parasitology

      Volume: 27 Pages: 693-701

    • Peer Reviewed
  • [Journal Article] A possible nuclear DNA marker to differentiate the two geographic genotypes of Taenia solium tapeworms2011

    • Author(s)
      Sato MO, et al.
    • Journal Title

      Parasitology International

      Volume: 60 Pages: 108-110

    • Peer Reviewed
  • [Journal Article] Evaluation of loop-mediated isothermal amplification method using fecal specimens for differential detection of Taenia speices2010

    • Author(s)
      Nkouawa A, et al.
    • Journal Title

      Journal of Clinical Microbiology

      Volume: 48 Pages: 3350-3352

    • Peer Reviewed
  • [Journal Article] Multiplex PCR for he differentiation of Diphyllobothrium spp. infecting humans2010

    • Author(s)
      Witch B, et al.
    • Journal Title

      Journal of Clinical Microbiology

      Volume: 48 Pages: 3111-3116

    • Peer Reviewed
  • [Journal Article] Size and charge antigens of Dirofilaria immitis adult worm for IgG-ELISA diagnosis of bancroflian filariasis2010

    • Author(s)
      Riyong D, et al.
    • Journal Title

      Southeast Asian Journal of Tropical Medicine and Public Health

      Volume: 41 Pages: 285-297

    • Peer Reviewed
  • [Journal Article] Serological studies of neurologic helminthic infections in rural areas of southwest Cameroon2010

    • Author(s)
      Nkouawa A, et al.
    • Journal Title

      PLoS Neglected Tropical Diseases

      Volume: 6 Pages: E732

    • Peer Reviewed
  • [Journal Article] Molecular and serological survey on taeniasis and cysticercosis in Kanchanaburi province, Thailand2010

    • Author(s)
      Ananthphruti MT, et al.
    • Journal Title

      Parasitology International

      Volume: 59 Pages: 326-330

    • Peer Reviewed
  • [Journal Article] Iso-electricfocusing of Bithynia snail of human osthorchiasis2010

    • Author(s)
      Pakdee W, et al.
    • Journal Title

      Southeast Asian Journal of Tropical Medicine and Public Health

      Volume: 41 Pages: 813-820

    • Peer Reviewed
  • [Journal Article] Immunoglobulin G subclass responses to recombinant Em18 in the follow-up of patients with alveolar echinococcosis in different clinical stages2010

    • Author(s)
      Tappe D, et al.
    • Journal Title

      Clinical and Vaccine Immunology

      Volume: 17 Pages: 944-948

    • Peer Reviewed
  • [Journal Article] State-of-the-Art Echinococcus and Taenia: phylogenetic taxonomy and its application to molecular diagnosis2010

    • Author(s)
      Nakao M, et al.
    • Journal Title

      Infection, Genetics and Evolution

      Volume: 10 Pages: 444-452

    • Peer Reviewed
  • [Journal Article] Expert consensus for the diagnosis and treatment of cystic and alveolar echinococcosis in humans2010

    • Author(s)
      Brunetti E, et al.
    • Journal Title

      Acta Tropica

      Volume: 114 Pages: 1-16

    • Peer Reviewed
  • [Journal Article] Specific IgG responses to recombinant antigen B and Em18 in cystic and alveolar echinococcosis in China2010

    • Author(s)
      Li TY, et al.
    • Journal Title

      Clinical and Vaccine Immunology

      Volume: 17 Pages: 470-475

    • Peer Reviewed
  • [Journal Article] Histopathological, serological and molecular confirmation of alveolar echinococcosis cases in Mongolia2010

    • Author(s)
      Ito A, et al.
    • Journal Title

      American Journal of Tropical Medicine and Hygiene

      Volume: 82 Pages: 266-269

    • Peer Reviewed
  • [Journal Article] Mongolian and Japanese joint conference on "Echinococcosis : diagnosis, treatment and prevention in Mongolia" June 4, 20092010

    • Author(s)
      Gurbadam A, et al.
    • Journal Title

      Parasites and Vectors

      Volume: 3 Pages: 8(1-3)

    • Peer Reviewed
  • [Journal Article] Widespread co-endemicity of human cystic and alveolar echinococcosis on the eastern Tibetan plateau, northwest Sichuan/southeast Qinghai, China2010

    • Author(s)
      Li TY, et al.
    • Journal Title

      Acta Tropica

      Volume: 113 Pages: 248-256

    • Peer Reviewed
  • [Journal Article] Anomalouc proglottids of the fish tapeworm Diphyllobothrium nihonkaiense with abnormal segmentation2010

    • Author(s)
      Yanagida T, et al.
    • Journal Title

      Parasitology International

      Volume: 59 Pages: 268-270

    • Peer Reviewed
  • [Journal Article] Neurocysticercosis : assessing where the infection was acquired from.2010

    • Author(s)
      Yanagida T, et al.
    • Journal Title

      Journal of Travel Medicine

      Volume: 17 Pages: 206-208

    • Peer Reviewed
  • [Journal Article] Genetic polymorphisms of Echinococcus tapeworms in China as determined by mitochondrial and nuclear DNA sequences2010

    • Author(s)
      Nakao M, et al.
    • Journal Title

      International Journal for Parasitology

      Volume: 40 Pages: 379-385

    • Peer Reviewed
  • [Journal Article] Evidence of hybridization between Taenia saginata and Taenia asiatica2010

    • Author(s)
      Okamoto M, et al.
    • Journal Title

      Parasitology International

      Volume: 59 Pages: 70-74

    • Peer Reviewed
  • [Journal Article] The wondering lesion : cerebral sparganosis2010

    • Author(s)
      Shirakura K, et al.
    • Journal Title

      Neurology

      Volume: 74 Pages: 180

    • Peer Reviewed
  • [Journal Article] Inter-and intra-species characterization of tapeworms of the genus Dip hyllobothrium (Cestoda : Diphyllobothriidea) from Switzerland, using nuclear and mitochondrial DNA targets2010

    • Author(s)
      Witch B, et al.
    • Journal Title

      Parasitology International

      Volume: 59 Pages: 35-39

    • Peer Reviewed
  • [Book] Zoonoses edited by Palmer SR, Lord Soulsby, Torgerson PR, Brown DWG2011

    • Author(s)
      Flisser A, Craig PS, Ito A.
    • Total Pages
      627-644
    • Publisher
      Oxford University Press
  • [Book] 臨床検査ガイド2011~20122011

    • Author(s)
      伊藤亮、迫康仁
    • Total Pages
      1082
    • Publisher
      文光堂

URL: 

Published: 2012-07-19  

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