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Molecular characterization of Cryptosporidium from various hosts

Published online by Cambridge University Press:  01 July 1998

U. M. MORGAN,
K. D. SARGENT,
P. DEPLAZES,
D. A. FORBES,
F. SPANO,
H. HERTZBERG,
A. ELLIOT and
R. C. A. THOMPSON
U. M. MORGAN
Affiliation:
World Health Organization Collaborating Centre for the Molecular Epidemiology of Parasitic Infections and State Agricultural Biotechnology Centre, Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
K. D. SARGENT
Affiliation:
World Health Organization Collaborating Centre for the Molecular Epidemiology of Parasitic Infections and State Agricultural Biotechnology Centre, Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
P. DEPLAZES
Affiliation:
Institute of Parasitology, University of Zurich, Wintherthurerstrasse, 266a, CH-8057, Zurich, Switzerland
D. A. FORBES
Affiliation:
Department of Paediatrics, University of Western Australia, Princess Margaret Hospital, GPO Box D184, WA 6001, Australia
F. SPANO
Affiliation:
Istituto di Parassitologia, Università di Roma ‘La Sapienza’, P.le A. Moro 5, 00185 Rome, Italy
H. HERTZBERG
Affiliation:
Institute of Parasitology, University of Zurich, Wintherthurerstrasse, 266a, CH-8057, Zurich, Switzerland
A. ELLIOT
Affiliation:
World Health Organization Collaborating Centre for the Molecular Epidemiology of Parasitic Infections and State Agricultural Biotechnology Centre, Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
R. C. A. THOMPSON
Affiliation:
World Health Organization Collaborating Centre for the Molecular Epidemiology of Parasitic Infections and State Agricultural Biotechnology Centre, Division of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, WA 6150, Australia
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Abstract

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A 298 bp region of the Cryptosporidium parvum 18S rDNA and a 390 bp region of the acetyl-CoA synthetase gene were sequenced for a range of human and animal isolates of Cryptosporidium from different geographical areas. A distinct genotype is common to isolates from cattle, sheep and goats and also an alpaca from Peru and is referred to here as the ‘calf’-derived Cryptosporidium genotype. Another genotype of ‘human’-derived isolates also appears to be conserved amongst human isolates although humans are also susceptible to infection with the ‘calf’ Cryptosporidium genotype. Mice and pigs carry genetically distinct genotypes of Cryptosporidium. Three snake isolates were also analysed, 2 of which exhibited C. muris genotypes and the third snake isolate carried a distinct ‘mouse’ genotype.

Keywords

Cryptosporidiumcharacterizationgenotypes

Information

Type
Research Article
Information
Parasitology , Volume 117 , Issue 1 , July 1998, pp. 31 - 37
Copyright
1998 Cambridge University Press