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Studies on Diagnosis, Treatment and Protection of Cryptosporidiosis in Animal and Man

Research Project

Project/Area Number 63860039
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field Applied veterinary science
Research InstitutionHokkaido University

Principal Investigator

ITAKURA Chitoshi  Hokkaido Univ., Dept. of Comp. Pathol. Prof., 獣医学部, 教授 (30021695)

Co-Investigator(Kenkyū-buntansha) MAEDE Yoshimitsu  Hokkaido Univ., Dept. of Int. Med. Prof., 獣医学部, 教授 (40002084)
FUKUMOTO Shinichiro  Rakuno Univ., Dept. Of Parasitol. Ass. Prof., 酪農学部, 講師 (00159120)
MORII Isao  Kyorin Med. Univ., Dept. of Parasitol. Ass. Prof., 医学部, 助教授 (80095546)
NUNOYA Tetsuo  Nippon Inst. for Biol. Sci., Path. Lab. Head, 病理室, 室長 (80099994)
Project Period (FY) 1988 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥8,400,000 (Direct Cost: ¥8,400,000)
Fiscal Year 1990: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1989: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1988: ¥4,000,000 (Direct Cost: ¥4,000,000)
KeywordsCryptosporidium / Oocyst / Protozoon / OPG / Chicken / Calf / Immunity / 器官培養 / 免疫蛍光法 / スポロゾイト / キニヨン染色
Research Abstract

Cryptosporidial infections have occurred in man and various kinds of animals and birds in many countries. Cryptosporidial oocysts are very small in size. Therefore, it is difficult to detect the oocysts in the feces. We used Sheather's sugar floatation method for detecting the oocysts in feces from chickens and calves. A specific gravity of the sugar fluid recommended was 1.20 for calves and 1.25 for chickens. In addition, a method for OPG value was determined.
Oocysts isolated from chickens and calves were observed morphologically. As a result, the chicken oocysts were different from Cryptosporidium (C) meleagridis and C. baileyi. On the other hand, the calf oocysts resembled C. Parvum. The morphology of oocysts was available for identification of the species.
There is currently no known effective therapy and protection for cryptosporidiosis. However, an immunogenicity for this parasite was suggested. Namely, birds experimentally infected with the parasite did not develop the infection from 8 weeks after the first infection. Therefore, immunological treatment and diagnosis should be studied on this condition.
We achieved an organ culture of the bursa of Fabricii from 4-week-old chickens. This culture is useful for observation of the life cycle and screening of medicines, because cryptosporidium in chickens infects prominently the epithelium of this organ.

Report

(4 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • 1988 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 福本 眞一郎: "北海道産小動物のCryptosporidiumの感染状況について" 第107回日本獣医学会講演要旨集. 97- (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 松井 利博: "クリプトスポリジウム実験感染鶏におけるオ-シストの排泄状況" 杏林医学会雑誌. 21. 132- (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nunoya,T.: "Primary culture of chicken bursal plical epithelium" Research in Veterinary Science. 50. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 松井 利博: "Cryptosporidium SP.のニワトリにおけるOPG値の推移と免疫原性" 寄生虫学雑誌. 40. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 板倉 智敏: "獣医伝染病学(第3版)" 近代出版(株), 2 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 板倉 智敏: "新版獣医臨床寄生虫学(産業動物編)" 文永堂出版(株), 18 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Nunoya, T.: "Primary culture of chicken bursal plical epithelium." Res. Vet. Sci.50. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Matsui, T.: "Immunogenicity and change of mean OPG values of Cyptosporidium sp. in chickens" J. Parasitol.40. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] NUNOYA,T.: "Primary culture of chicken bursal plical epithelium" Research in Veterinary Science. 50. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 松井 利博: "Cryptosporidium sp.のニワトリにおけるOPG値の推移と免疫原性" 寄生虫学雑誌. 40. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 板倉 智敏: "新版 獣医臨床寄生虫学" 文永堂出版(株), 18 (1992)

    • Related Report
      1990 Annual Research Report
  • [Publications] 松井利博: "クリプトスポリジウム実験感染鶏におけるオ-シストの排泄状況" 第18回杏林医学会総会記事杏林医学会総会雑誌. 21. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 福本真一郎: 第107回日本獣医学会講演要旨集. 97 (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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