ERIC-PCR genotypic characterization of Haemophilus parasuis isolated from Brazilian swine
Braz. j. microbiol
; Braz. j. microbiol;42(4): 1420-1426, Oct.-Dec. 2011. ilus, tab
Article
em En
| LILACS
| ID: lil-614604
Biblioteca responsável:
BR32.1
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.
Palavras-chave
Texto completo:
1
Base de dados:
LILACS
Assunto principal:
Técnicas In Vitro
/
Testes Sorológicos
/
Reação em Cadeia da Polimerase
/
Análise de Sequência de DNA
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Haemophilus parasuis
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Infecções por Haemophilus
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Brasil