Leptospira interrogans serovar Pomona: detección de diferencias antigenicas entre tres aislamientos regionales de bovinos y una cepa de referencia / Leptospira interrogans serovar Pomona: detection of antigenic differences among 3 regional isolates from cattle and a reference strain
Rev. argent. microbiol
; Rev. argent. microbiol;33(2): 108-112, abr.-jun. 2001.
Article
em Es
| LILACS
| ID: lil-332493
Biblioteca responsável:
BR1.1
ABSTRACT
Leptospirosis is a zoonosis caused by Leptospira interrogans. This disease is diagnosed by quantification of specific immunoglobulins in serum by the microagglutination test (MAT). The aims of this research were a) to compare the protein profiles of 3 clinical isolates of bovine leptospirosis with the reference strain used for the MAT, and b) to identify the immunodomain antigens of the regional isolates through PAGE and immunoblotting techniques of bovine sera from infected, vaccinated and MAT-negative animals. Coomassie-blue stained gels revealed extensive protein similarities between pathogenic and reference strain. Most infected (8/10) and vaccinated animal sera (4/7) showed by immunoblotting a similar reactivity against the proteins from pathogenic leptospires, with a strong band of 25-30 kDa which was not detected in the reference strain. The lack of correlation between MAT and immunoblotting techniques for infected animals could be due either to the infection stage at which the diagnosis was made or to the immunoglobulin isotype involved in the response. Results obtained would confirm the antigenic differences between the 3 isolates and the reference strain.
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Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Doença de Weil
/
Variação Antigênica
/
Doenças dos Bovinos
/
Leptospira interrogans
/
Antígenos de Bactérias
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
País/Região como assunto:
America do sul
/
Argentina
Idioma:
Es
Revista:
Rev. argent. microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Argentina