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
;
33(2): 108-112, abr.-jun. 2001.
Article
Dans Espagnol
| LILACS
| ID: lil-332493
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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Indice:
LILAS (Amériques)
Sujet Principal:
Maladie de Weil
/
Variation des antigènes
/
Maladies des bovins
/
Leptospira interrogans
/
Antigènes bactériens
Type d'étude:
Etude diagnostique
Limites du sujet:
Animaux
Pays comme sujet:
Amérique du Sud
/
Argentine
langue:
Espagnol
Texte intégral:
Rev. argent. microbiol
Thème du journal:
Microbiologie
Année:
2001
Type:
Article
Pays d'affiliation:
Argentine
Institution/Pays d'affiliation:
Universidad de Buenos Aires/AR
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