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Cryptosporidiosis in Tanzanian Goat Kids: Scanning and Transmission Electron Microscopic Observations

Kryptosporidiose hos Tanzanianske kje. Scanning- og transmisjonselektronmikroskopiske funn.

Acta Veterinaria Scandinavica volume 25, pages 322–326 (1984)Cite this article

Abstract

Trophozoites, gametes, and schizonts characteristic of Cryptosporidia were demonstrated in 2 Tanzanian goat kids. In a heavily infected kid the parasite was associated with villous atrophy and crypt hyperplasia. An enhanced epithelial cell ageing and extrusion rate, possibly due to a drain on cell metabolites by the parasite, is suggested. The protozoan seemed to induce host cell specializations, including parasitophorous envelope and development of smooth-membraned vesicles. The vesicles possibly have a function in the transport of nutrients from the host cell to the parasite.

Sammendrag

Hos Tranzanianske kje såes trophozoiter, gameter og schizonter med morfologi typisk for kryptosporidier. Hos ett dyr med massiv infeksjon fantes atrofi av tarmtottene og hyperplasi av kryptene. Et forkortet livsløp og forøket avstøtning av epitelcellene i tarmen ble satt i forbindelse med parasittenes forbruk av cellemetabolitter. Protozoene syntes å forårsake spesialiseringer hos vertscellen, bl. a. vakuoler som omgav parasittene og cytoplasmatiske vesikler. Vesiklene har kanskje betydning i transporten av metabolitter fra vertscellen til parasitten.

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Authors and Affiliations

  1. Department of Pathology, Norwegian College of Veterinary Medicine, Oslo, Norway

    J. A. Matovelo, T. Landsverk & G. Amaya Posada

  2. Departments of Veterinary Pathology and Surgery, Obstetrics and Reproduction, Veterinary Division, Faculty of Agriculture, Forestry and Veterinary Science, University of Dares Salaam, Morogoro, Tanzania

    J. A. Matovelo, T. Landsverk & G. Amaya Posada

Authors
  1. J. A. Matovelo
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  2. T. Landsverk
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  3. G. Amaya Posada
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Matovelo, J.A., Landsverk, T. & Posada, G.A. Cryptosporidiosis in Tanzanian Goat Kids: Scanning and Transmission Electron Microscopic Observations. Acta Vet Scand 25, 322–326 (1984). https://doi.org/10.1186/BF03547246

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Acta Veterinaria Scandinavica

ISSN: 1751-0147