| Registro completo |
| Provedor de dados: |
BJM
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| País: |
Brazil
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| Título: |
Virulence factors of Escherichia coli isolated from calves with diarrhea in Brazil
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| Autores: |
Salvadori,Márcia Regina
Valadares,Geórgio Freesz
Leite,Domingos da Silva
Blanco,Jesús
Yano,Tomomasa
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| Data: |
2003-07-01
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| Ano: |
2003
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| Palavras-chave: |
Calves
Diarrhea
E. coli
Virulence factors
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| Resumo: |
Two hundred and five Escherichia coli strains isolated from calves with diarrhea from mid-western Brazil were screened for the presence of virulence factors associated with bovine colibacillosis. One hundred and two (49.8%) of the E. coli strains produced toxins: Shiga toxins 1 (9.7%) and 2 (6.3%), a-hemolysin (9.7%), enterohemolysin(6.8%), Cytotoxic Necrotizing Factors type 1 (0.5%), and type 2 (4.4%), enterotoxins LT-II (8.3%) and STa (3.9%). No strain produced enterotoxin LT-I. Fimbrial adhesins F5 and F17 were produced by 7.3% and 4.8% of the strains, respectivly, and none expressed F41. Seven strains (3.4%) possessed the gene eae and belonged to serotypes O26:H-; O111:H- and O118:H16. These results suggest that calves in Brazil may be an important source of pathogenic E. coli for animals and humans.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300009
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| Editor: |
Sociedade Brasileira de Microbiologia
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| Relação: |
10.1590/S1517-83822003000300009
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Microbiology v.34 n.3 2003
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| Direitos: |
info:eu-repo/semantics/openAccess
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