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Biogeography of Rhodococcus equi infections in domestic animals : origin and route of transmission of the virulent R. equi from Mongolia and China to Japan

Research Project

Project/Area Number 18405038
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Applied veterinary science
Research InstitutionKitasato University

Principal Investigator

TAKAI Shinji  Kitasato University, 獣医学部, 教授 (80137900)

Co-Investigator(Kenkyū-buntansha) KATUDA Tsutomu  北里大学, 獣医学部, 准教授 (80317057)
斑目 広郎  麻布大学, 獣医学部, 准教授 (20173768)
Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥5,860,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥960,000)
Fiscal Year 2008: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2007: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsRhodococcus equi / 病原性プラスミド / モンゴル / 伝播経路 / 強毒株 / 馬 / 感染症 / 起源 / 進化
Research Abstract

平成14~16年度科学研究費海外学術調査"動物の移動・定着に伴う病原体の伝播に関する分子疫学調査"は、1)韓国済州島の済州馬由来分離株の中に日本の木曽馬と同じ病原性プラスミド型(90kb II型)と韓国特有の新しい型(90kb V型)が見いだされ、確かに韓国から日本にこの病原細菌も馬と共に渡来したことが実証された。2)中国の調査では、内蒙古自治区のホロンバイル草原とシリンゴル草原の馬とその飼育環境からロドコッカス・エクイを分離することはできたが、全てが無毒株であった。さらに、3)モンゴル・ウランバートル近郊の遊牧民の馬とその飼育環境からの菌分離を試みたが全く分離されなかった。モンゴルの子馬からロドコッカス・エクイが全く分離できなかったという「真実の意外性」は、病原細菌と宿主(馬)との出会いを再考する一石となった。感染症とは過去のある時代、地球上のどこかで、それまで相互に無縁に近い存在であった生物が偶然生活場所を重ね、その結果、一方は病原微生物に進化し、他方は一方的に害を受ける側の宿主になったものと理解される。その進化した病原微生物がロドコッカス・エクイ強毒株であり、感受性宿主が子馬であると考えていた。本研究では、ウランバートル近郊の子馬からロドコッカス・エクイが存在しないことが、モンゴル全土の馬にも普遍的であるといえるかを明らかにすることであり、スクリーニングとして馬血清中のロドコッカス・エクイ特異抗体の調査、抗体陽性地域の菌分離と病原性更には遺伝子型調査を実施した。驚くべきことに、日本・韓国では全く分離されなかった85-kbI 型プラスミドがモンゴルSelenge 県の馬糞便から分離され、それがオランダの強毒株のパルス型と類似していた。分離された強毒株とオランダ分離株のVap family 遺伝子の塩基配列の解析を行い、この領域の配列が良く保存されていることが明らかとなった。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (36 results)

All 2008 2007 2006

All Journal Article (25 results) (of which Peer Reviewed: 8 results) Presentation (11 results)

  • [Journal Article] Isolation and characterisation of Rhodococcus equi from submaxillary lymph nodes of wild boars (Sus scrofa)2008

    • Author(s)
      Makrai, L., A. Kobayashi, M. Matsuoka, Y. Sasaki, T. Kakuda, B. Denes, I. Hajtos, I. Revesz, K. Janosi, L. Fodor, J. Varga and S. Takai
    • Journal Title

      Vet. Microbiol 131(3-4)

      Pages: 318-23

    • Related Report
      2008 Final Research Report
  • [Journal Article] Association of soil concentrations of Rhodococcus equi and occurrence of R. equi foal pneumonia at farms in central Kentucky2008

    • Author(s)
      Cohen, N. D., Carter, C. N., Scott, H. M., Chaffin, K.,. Smith, J. L., Grimm, M B., Kuskie, K., Takai, S., Martens. R. J.
    • Journal Title

      Am. J. Vet. Res. Am J Vet Res. 69(3)

      Pages: 385-395

    • Related Report
      2008 Final Research Report
  • [Journal Article] Association of soil concentrations of Rhodococcus equi and occurrence of R. equi foal pneumonia at farms in central Kentucky2008

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

      Am. J. Vet. Re181-183s. 69(3)

      Pages: 385-395

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Streptococcus suis in humans, Thailand.2008

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

      Emerging Infectious Diseases (EID) 14

      Pages: 181-183

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Isolation and characterisation of Rhodococcus equi from submaxillary lymphnodes of wild boars (Sus scrofa).2008

    • Author(s)
      Makrai, L, et al.
    • Journal Title

      Vet. Microbiol. 131(3-4) :

      Pages: 318-323

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Association of soil concentrations of Rhodococcus equi and occurrence of R.equi foal pneumonia at farms in central Kentucky.2008

    • Author(s)
      Cohen, N., et. al.
    • Journal Title

      J Am Vet Med Assoc. 232(In press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 2007. Abortion due to avirulent Rhodococcus equi infection in a Thoroughbred horse in Japan2007

    • Author(s)
      Nakamura, Y., H. Nishi, Y. Katayama, H. Niwa, T. Matsumura, T. Anzai, Y. Ohtsu, K. Tsukano, N. Shimizu, and S. Takai
    • Journal Title

      Vet. Rec. 161(10)

      Pages: 342-346

    • Related Report
      2008 Final Research Report
  • [Journal Article] Cutaneous pyogranuloma in a cat caused by virulent Rhodococcus equi containing an 87-kb type I plasmid2007

    • Author(s)
      Faris, M. R., Takai, S., Ribeiro, M. G., Fabris, V. E., and Franco, S.R.V.S.
    • Journal Title

      Aust Vet J. 85(1-2)

      Pages: 29-31

    • Related Report
      2008 Final Research Report
  • [Journal Article] Genotypic characterization of VapA positive Rhodococcus equi in foals with pulmonary affection and their soil environment on a warmblood-horse-breeding farm in Germany2007

    • Author(s)
      Venner, M., Meyer-Hamme, B., Verspohl, J., Hatori, F., Shimizu, N., Sasaki, Y., Kakuda, T., Tsubaki, T., and Takai, S.
    • Journal Title

      Res. Vet. Sci. 83

      Pages: 311-317

    • Related Report
      2008 Final Research Report
  • [Journal Article] Evaluation of fecal samples from mares as a source of Rhodococcus equi for their foals by use of quantitative bacteriologic culture and colony immunoblot analyses2007

    • Author(s)
      Grimm MB, Cohen ND, Slovis NM, Mundy GD, Harrington JR, Libal MC, Takai S, Martens RJ.
    • Journal Title

      Am. J. Vet. Res. 68(1)

      Pages: 63-71

    • Related Report
      2008 Final Research Report
  • [Journal Article] Evaluation of fecal samples from mares as a source of Rhodococcusequi for their Faris,M.R.,foals by use of quantitative bacterioloeic culture and colony immunoblot analyses.2007

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

      Am.J.Vet.Res. 68

      Pages: 63-71

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genotypic characterization of VapA positive Rhodococcus equl in foals with pulmonary affection and their soil environment on awarmblood-horse-breeding farm in Germany.2007

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

      Res.Vet.Sci. 83

      Pages: 311-317

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cutaneous pyogranuloma in a cat caused by virulent Rhodococcuse qui containine an 87-kb tupne I plasmid.2007

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

      Aust Vet J. 85

      Pages: 29-31

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Abortion due to avirulent Rhodococcus equi infection in a Thoroughbred horse in Japan.2007

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

      Vet.Rec. 161

      Pages: 342-346

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Seroepidemiological survey of Rhodococcus equi infection in asymptomatic horses from Bursa, Izmir and Istanbul provinces, Turkey2006

    • Author(s)
      Attili, A. R., Kennerman, E., Takai, S., Or, M. E., Marenzoni, M. L., Torun, S., Pieramati, C., Kayar, A., Golcu, E., Parkan, C., Yilmaz, Z., Gonul, R., Valente, C., and V. Cuteri
    • Journal Title

      CIMID 19

      Pages: 323-333

    • Related Report
      2008 Final Research Report
  • [Journal Article] Rhodococcus equi in the soil environment of horses in Inner Mongolia2006

    • Author(s)
      Takai, S., Zhuang, D., Huo, X., Madarame, H., Gao, M., Tan, Z, Gao, S, Yan, L., Guo, C., Zhou, X., Hatori, F., Sasaki, Y., Kakuda, T., and Tsubaki, S.
    • Journal Title

      China. J. Vet. Med. Sci. 68

      Pages: 739-742

    • Related Report
      2008 Final Research Report
  • [Journal Article] Two cases of equine abortion caused by Rhodococcus equi2006

    • Author(s)
      Szeredi, L., Molnar, T., Glavits, R., Takai, S., Makrai, L., Denes, B., and Del Piero, F.
    • Journal Title

      Vet. Pathol 43

      Pages: 208-211

    • Related Report
      2008 Final Research Report
  • [Journal Article] Molecular Typing of VapA-Positive Rhodococcus equi Isolates from Jeju Native Horses, Korea.2006

    • Author(s)
      Son, G. W, Lee, D.S., Yamatoda, N., Hatori, F., Shimizu, N., Kakuda, T., Sasaki, Y., Tsubaki, S., and Takai, S.
    • Journal Title

      J. Vet. Med. Sci. 68

      Pages: 249-253

    • NAID

      110004675732

    • Related Report
      2008 Final Research Report
  • [Journal Article] Plasmidprofiles of virulent Rhodococcus equi isolates from soil environment on horse-breeding farms in Hungary.2006

    • Author(s)
      Makrai, L., Kira, K., Kono, A., Sasaki, Y., Kakuda, T., Tsubaki, S., Fodor, L., Varga, J., and Takai, S.
    • Journal Title

      Acta Vet.Hung 54

      Pages: 11-18

    • Related Report
      2008 Final Research Report
  • [Journal Article] Plasmid profiles of virulent Rhodococcus equi isolates from soil environment on horse-breeding farms in Hungary.2006

    • Author(s)
      Makrai, L., et al.
    • Journal Title

      Acta Vet. Hung. 54

      Pages: 11-18

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Molecular Typing of VapA-Positive Rhodococcus equi Isolates from Jeju Native Horses, Korea.2006

    • Author(s)
      Son, G.et al.
    • Journal Title

      J. Vet. Med. Sci. 68

      Pages: 249-253

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Two cases of equine abortion caused by Rhodococcus equi.2006

    • Author(s)
      Szeredi, L., et al.
    • Journal Title

      Vet. Pathol. 43

      Pages: 208-211

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Rhodococcus equi in the soil environment of horses in Inner Mongolia, China.2006

    • Author(s)
      Takai, S., et al.
    • Journal Title

      J. Vet. Med. Sci. 68

      Pages: 739-742

    • NAID

      110004763185

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Seroepidemiological survey of Rhodococcus equi infection in asymptomatic horses from Bursa, Izmir and Istanbul provinces, Turkey2006

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

      CIMID, 19

      Pages: 323-333

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Evaluation of fecal samples from mares as a source of Rhodococcus equi for their foals by use of quantitative bacteriologic culture and colony immunoblot analyses.2006

    • Author(s)
      Grimm MB et al.
    • Journal Title

      Am. J. Vet. Res. 68

      Pages: 63-71

    • Related Report
      2006 Annual Research Report
  • [Presentation] Rhodococcus equi as a pathogen : past, present and future2008

    • Author(s)
      高井 伸二
    • Organizer
      4th Havemeyer Workshop on Rhodococcus equi
    • Place of Presentation
      英国・エジンバラ大学
    • Year and Date
      2008-07-14
    • Related Report
      2008 Annual Research Report
  • [Presentation] 豚の下顎リンパ節病変部からのロドコッカス・エクイの分離2008

    • Author(s)
      松岡道則、小林亜由美、松岡未沙 本多弥生、橋本梨里、高井伸二
    • Organizer
      第145回日本獣医学会
    • Place of Presentation
      麻布大
    • Related Report
      2008 Final Research Report
  • [Presentation] 野生イノシシにおけるロドコッカス・ェクイ中等度毒ク株の分離と抗体調査2007

    • Author(s)
      小林 亜由美, ら
    • Organizer
      第144回日本獣医学会総会
    • Place of Presentation
      酪農学園大学
    • Year and Date
      2007-09-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] 野生イノシシにおけるロドコッカス・エクイ中等度毒力株の分離と抗体調査2007

    • Author(s)
      橋本 梨里, ら
    • Organizer
      第61回日本細菌学会東北支部総会
    • Place of Presentation
      東北薬科大学
    • Year and Date
      2007-08-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Acanthamoeba内でロドコッカス・エクイの長期間生存と乾燥抵抗性について2007

    • Author(s)
      鷹見 朱位子, ら
    • Organizer
      第61回日本細菌学会東北支部総会
    • Place of Presentation
      東北薬科大学
    • Year and Date
      2007-08-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] Campylobacter jejuniの自己凝集/バイオフィルム形成関連遺伝子の検索2007

    • Author(s)
      清水 奈菜子, ら
    • Organizer
      第61回日本細菌学会東北支部総会
    • Place of Presentation
      東北薬科大学
    • Year and Date
      2007-08-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] AcanthamoebaによるRhodococcus equiの食菌と殺菌-アメーバ内での長期間生存と乾燥抵抗性-2007

    • Author(s)
      鷹見朱位子、二見秀一、安田理、田口敦子、佐々木由香子、角田勤、高井伸二
    • Organizer
      第143回日本獣医学会
    • Place of Presentation
      つくば
    • Related Report
      2008 Final Research Report
  • [Presentation] 野生イノシシにおけるロドコッカス・エクイ中等度毒力株の分離と抗体調査2007

    • Author(s)
      小林亜由美、松岡未沙、橋本梨里、本多弥生、Laszl Makrai、林義規、池町安雅、佐々木由香子、角田勤、高井伸二
    • Organizer
      第61回日本細菌学会東北支部総会
    • Place of Presentation
      仙台
    • Related Report
      2008 Final Research Report
  • [Presentation] Acanthamoeba内でロドコッカス・エクイの長Acanthamoeba内でロドコッカス・エクイの長2007

    • Author(s)
      鷹見朱位子、二見秀一、安田理、田口敦子、佐々木由香子、角田勤、高井伸二
    • Organizer
      第61回日本細菌学会東北支部総会
    • Place of Presentation
      仙台
    • Related Report
      2008 Final Research Report
  • [Presentation] 野生イノシシにおけるロドコッカス・エクイ中等度毒力株の分離と抗体調査2007

    • Author(s)
      小林 亜由美 松岡 未沙 L_szl_Makrai, Katalin J_nosi, L_szl_ Fodor,J_nos Varga、林 義規、池町安雅、佐々木由香子、角田勤、高井伸二
    • Organizer
      第144回日本獣医学会
    • Place of Presentation
      江別
    • Related Report
      2008 Final Research Report
  • [Presentation] Rhodococcus equi無毒株が分離された馬流産の1 症例2006

    • Author(s)
      中村芳子、西英機、片山芳成、安斉了、高井伸二
    • Organizer
      第142回日本獣医学会
    • Place of Presentation
      山口
    • Related Report
      2008 Final Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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