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2014 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、分子共進化に関する総括研究

Research Project

Project/Area Number 24256002
Research InstitutionAsahikawa Medical College

Principal Investigator

伊藤 亮  旭川医科大学, 医学部, その他 (70054020)

Co-Investigator(Kenkyū-buntansha) 迫 康仁  旭川医科大学, 医学部, 教授 (40312459)
中尾 稔  旭川医科大学, 医学部, 准教授 (70155670)
岡本 宗裕  京都大学, 霊長類研究所, 教授 (70177096)
Project Period (FY) 2012-04-01 – 2015-03-31
Keywords人獣共通寄生虫症 / テニア症 / 嚢虫症 / エキノコックス症 / 条虫の生殖戦略 / 遺伝子によるテニア科条虫の再分類
Outline of Annual Research Achievements

テニア科条虫によって引き起こされるヒトならびに家畜における嚢虫症、エキノコックス症、ヒトで成虫になるテニア症に関する病原性の進化と地理拡散に関する総括的研究はほぼ当初の目的を達成できた。5月現在国際専門誌に公表されている論文は12編、現在投稿中の論文が4編である。
本事業により、2つの地理的遺伝子型(アジア型、アフリカ型)が混在していることが証明されていたマダガスカルで採取された有鉤嚢虫のミトコンドリア(1N)と核遺伝子(2N)を比較解析した結果、2つの異なる遺伝子型の成虫間での他家受精が起こっていたことを示す遺伝子交雑個体が確認された(業績6)。これは雌雄同体である条虫が他家受精することを証明した成果である。エキノコックス症を惹き起こすエキノコックス属条虫を、9種類に再分類し直し、テニア属を3属に再分類した前年度までの成果に基づき、アフリカ、エチオピアで採取されたテニア属、エキノコックス属条虫の遺伝子解析から、これまで報告されていない複数の新種の存在を強く示唆する成果(業績12)、テニア属条虫のアフリカ起源に疑問を投げかける成果(業績10)が得られている。さらに、モンゴルにおけるエキノコックス条虫の遺伝子解析、患者(業績9)解析成果から、現在5種類から構成されている、いわゆる単包虫症を惹き起こす単包条虫を病原性、疫学成績、抗体応答性など、すべてが1種類によって引き起こされていたという時代のWHOのガイドラインの見直しが必要であるという提言をTrends in Parasitologyに再投稿中である。すなわち、遺伝子確認により5種類のいずれによる症例かを確認が評価の大前提であると。
テニア科条虫の遺伝子解析から、種の概念、種の分類、生殖戦略を見直す世界に発信できる成果が得られた。

Research Progress Status

26年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

26年度が最終年度であるため、記入しない。

  • Research Products

    (26 results)

All 2015 2014

All Journal Article (12 results) (of which Peer Reviewed: 12 results,  Open Access: 12 results,  Acknowledgement Compliant: 12 results) Presentation (11 results) (of which Invited: 7 results) Book (3 results)

  • [Journal Article] The present situation of human taeniases and cysticercosis in Asia.2015

    • Author(s)
      Ito A, Wandra T, Li T, Dekumyoy P, Nkouawa A, Okamoto M, Budke CM.
    • Journal Title

      Recent Patents on Anti-Infective Drug Discovery

      Volume: 9 (3) Pages: 173-185

    • DOI

      10.2174/1574891X10666150410125711

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Genetic characterization of Moniezia species in Senegal and Ethiopia.2015

    • Author(s)
      Diop G, Yanagida T, Hailemariam Z, Menkir S, Nakao M, Sako Y, Ba CT, Ito A.
    • Journal Title

      Parasitol Int

      Volume: 64 Pages: 256-260

    • DOI

      10.1016/j.paraint.2015.02.0008

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The present situation and towards the prevention and control of neurocysticercosis on the tropical island, Bali, Indonesia.2015

    • Author(s)
      Wandra T, Swastika IK, Dharmawan NS, Purba IE, Sudamaja IM, Yoshida T, Sako Y, Okamoto M, Diarthini NLPE, Laksemi DAAS, Yanagida T, Nakao M, Ito A.
    • Journal Title

      Parasites and Vectors

      Volume: 8 Pages: 148

    • DOI

      10.1186/s13071-015-0755-z

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Unique MRI findings for differentiation of an early stage of hepatic alveolar echinococcosis.2015

    • Author(s)
      Aoki T, Hagiwara M, Yabuki H, Ito A.
    • Journal Title

      BMJ Case Report

      Volume: Feb 19 Pages: 1-5

    • DOI

      10.1136/bcr-2014-208123

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Invited Review: Basic and Applied Problems in Developmental Biology and Immunobiology of Cestode Infections: Hymenolepis, Taenia and Echinococcus.2015

    • Author(s)
      Ito A.
    • Journal Title

      Parasite Immunology

      Volume: 37 Pages: 53-69

    • DOI

      10.1111/pim.12167.Review

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Genetics of the pig tapeworm in Madagascar reveal a history of human dispersal and colonization.2014

    • Author(s)
      Yanagida T, Carod JF, Sako Y, Nakao M, Hoberg E, Ito A.
    • Journal Title

      PLoS ONE

      Volume: 9(10) Pages: e109002

    • DOI

      10.1371/journal.pone.0109002. eCollection 2014

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Invited Review:Culinary delights and travel? A review of zoonotic cestodiases and metacestodiases.2014

    • Author(s)
      Ito A, Budke C.
    • Journal Title

      Travel Medicine and Infectious Diseases

      Volume: 12 Pages: 582-591

    • DOI

      10.1016/j.tmaid.2014.06.009. Epub 2014 Jul 15

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Comparison of the serological tests ICT and ELISA for the diagnosis of alveolar echinococcosis in France.2014

    • Author(s)
      Knapp J, Sako Y, Grenouille F, Bresson-Hadni S, Richou C, Gbaguidi-Haore H, Ito A, Millon L.
    • Journal Title

      Parasite

      Volume: 21 Pages: 34

    • DOI

      10.1051/parasite/2014037. Epub 2014 Jul 25

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Cystic echinococcoses in Mongolia: molecular identification, serology and risk factors.2014

    • Author(s)
      Ito A, Dorjsuren T, Davaasuren A, Sako Y, Yanagida T, Nakaya K, Bat-Ochir OE, Ayushkhuu T, Bazarragchaa N, Gonchigsengee N, Li T, Agvaandaram G, Davaajav A, Chinchuluun B, Chuluunbaatar G.
    • Journal Title

      PLoS Neglected Tropical Diseases

      Volume: 8(6) Pages: e2937

    • DOI

      10.1371/journal.pntd.0002937. eCollection 2014 Jun

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Phylogenetic characterisation of Taenia tapeworms in spotted hyenas and reconsideration of the “Out of Africa” hypothesis of Taenia in humans.2014

    • Author(s)
      Terefe Y, Hailemariam Z, Menkir S, Nakao M, Lavikainen A, Haukisalmi V, Iwaki T, Okamoto M, Ito A.
    • Journal Title

      Int J Parasitol

      Volume: 44(8) Pages: 533-541

    • DOI

      10.1016/j/ijpara.2014.03.013. Epub 2014 May 9

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Recent situation of taeniasis in Mongolia (2002-2012).2014

    • Author(s)
      Davaasuren A, Dorjsuren T, Yanagida T, Sako Y, Nakaya K, Davaajav A, Agvaandaram G, Enkhbat T, Gonchigoo B, Dulmaa N, Chuluunbaatar G, Ito A.
    • Journal Title

      Korean J Parasitol

      Volume: 52(2) Pages: 211-214

    • DOI

      10.3347/kjp.2014.52.2.211.Epub 2014 Apr 18

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Molecular identification of species of Taenia causing bovine cysticercosis in Ethiopia.2014

    • Author(s)
      Hailemariam Z, Nakao M, Menkir S, Lavikainen A, Iwaki T, Yanagida T, Okamoto M, Ito A.
    • Journal Title

      J Helminthol

      Volume: 88 Pages: 376-380

    • DOI

      10.1017/S0022149X13000138. Epub 2013 Mar 4

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Recent advances and perspectives in molecular epidemiology of Taenia solium cysticercosis2014

    • Author(s)
      伊藤 亮
    • Organizer
      12th MEEGID, Bangkok,
    • Place of Presentation
      Bangkok(Thailand)
    • Year and Date
      2014-12-11 – 2014-12-13
  • [Presentation] Taeniases and cysticercosis in Asia2014

    • Author(s)
      伊藤 亮
    • Organizer
      2014 JITMM and 8th Food- and Water-Borne Parasitic Zoonoses, Bangkok
    • Place of Presentation
      Bangkok(Thailand)
    • Year and Date
      2014-12-02 – 2014-12-04
    • Invited
  • [Presentation] Echinococcoses in Mongolia2014

    • Author(s)
      伊藤 亮
    • Organizer
      Wellcome Trust Workshop on Echinococcoses in the Central Asia, Kyrgyzstan and the Neighbours.
    • Place of Presentation
      Bishkek(Kyrgyzstan )
    • Year and Date
      2014-11-25 – 2014-11-26
    • Invited
  • [Presentation] An Honorary International Fellow Awardee’s speech2014

    • Author(s)
      伊藤 亮
    • Organizer
      43rd Annual meeting of the American Society of Tropical Medicine and Hygiene
    • Place of Presentation
      New Orleans(America )
    • Year and Date
      2014-11-02 – 2014-11-06
  • [Presentation] Towards the control and prevention of taeniases and cysticercosis in Bali, Indonesia2014

    • Author(s)
      伊藤 亮
    • Organizer
      International Seminar on Taeniasis/cysticercosis and other parasitic infections
    • Place of Presentation
      Denpasar(Indonesia)
    • Year and Date
      2014-09-22 – 2014-09-22
  • [Presentation] Towards control of taeniases and cysticercosis in Asia2014

    • Author(s)
      伊藤 亮
    • Organizer
      13th ICOPA
    • Place of Presentation
      Mexico City(Mexico )
    • Year and Date
      2014-08-14 – 2014-08-14
    • Invited
  • [Presentation] Genetic characterization of Echinococcus spp. causing echinococcosis in the Northern Hemisphere2014

    • Author(s)
      柳田 哲矢
    • Organizer
      13th ICOPA
    • Place of Presentation
      Mexico City(Mexico )
    • Year and Date
      2014-08-12 – 2014-08-12
    • Invited
  • [Presentation] Serological approaches for echinococcoses2014

    • Author(s)
      伊藤 亮
    • Organizer
      13th ICOPA
    • Place of Presentation
      Mexico City(Mexico )
    • Year and Date
      2014-08-12 – 2014-08-12
    • Invited
  • [Presentation] Epidemiological approach for alveolar echinococcosis in Mongolia2014

    • Author(s)
      伊藤 亮
    • Organizer
      13th ICOPA
    • Place of Presentation
      Mexico City(Mexico )
    • Year and Date
      2014-08-12 – 2014-08-12
    • Invited
  • [Presentation] Recent Advances of Taenia asiatica Research2014

    • Author(s)
      伊藤 亮
    • Organizer
      13th ICOPA(Satellite Symposium)
    • Place of Presentation
      Mexico City(Mexico )
    • Year and Date
      2014-08-10 – 2014-08-10
  • [Presentation] Echinococcoses in Mongolia: molecular identification, serology and risk factors2014

    • Author(s)
      伊藤 亮
    • Organizer
      4th Current Advances in Microbiology and Immunology
    • Place of Presentation
      Ulaanbaatar(Mongolia)
    • Year and Date
      2014-06-19 – 2014-06-20
    • Invited
  • [Book] 今日の診断指針2015

    • Author(s)
      伊藤 亮
    • Total Pages
      未定
    • Publisher
      医学書院
  • [Book] 臨床検査ガイド 2015改訂版2015

    • Author(s)
      伊藤 亮
    • Total Pages
      3
    • Publisher
      文光堂
  • [Book] シンプル微生物学2015

    • Author(s)
      伊藤 亮
    • Total Pages
      未定
    • Publisher
      南江堂

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Published: 2016-06-01  

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