ERIC-PCR genotypic characterization of Haemophilus parasuis isolated from Brazilian swine
Braz. j. microbiol
;
42(4): 1420-1426, Oct.-Dec. 2011. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-614604
ABSTRACT
Haemophilus parasuis infection, known as Glãsser's disease, is characterized by fibrinous polyserositis, arthritis and meningitis in piglets. Although traditional diagnosis is based on herd history, clinical signs, bacterial isolation and serotyping, the molecular-based methods are alternatives for species-specific tests and epidemiologic study. The aim of this study was to characterize H. parasuis strains isolated from different states of Brazil by serotyping, PCR and ERIC-PCR. Serotyping revealed serovar 4 as the most prevalent (24 percent), followed by serovars 14 (14 percent), 5 (12 percent), 13 (8 percent) and 2 (2 percent), whereas 40 percent of the strains were considered as non-typeable. From 50 strains tested 43 (86 percent) were positive to Group 1 vtaA gene that have been related to virulent strains of H.parasuis. ERIC-PCR was able to type isolates tested among 23 different patterns, including non-typeable strains. ERIC-PCR patterns were very heterogeneous and presented high similarity between strains of the same animal or farm origin. The results indicated ERIC-PCR as a valuable tool for typing H. parasuis isolates collected in Brazil.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Técnicas In Vitro
/
Pruebas Serológicas
/
Reacción en Cadena de la Polimerasa
/
Análisis de Secuencia de ADN
/
Haemophilus parasuis
/
Infecciones por Haemophilus
Tipo de estudio:
Estudio diagnóstico
Límite:
Animales
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Braz. j. microbiol
Asunto de la revista:
Microbiologia
Año:
2011
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade de São Paulo/BR
Similares
MEDLINE
...
LILACS
LIS