Voltar
Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Virulence-associated factors of uropathogenic Escherichia coli strains isolated from pigs

1999; Elsevier BV; Volume: 65; Issue: 2 Linguagem: Inglês

10.1016/s0378-1135(98)00277-6

ISSN

1873-2542

Autores

Benito Guimarães de Brito, Domingos da Silva Leite, Rosa Elisa Carvalho Linhares, Marilda Carlos Vidotto,

Tópico(s)

Clostridium difficile and Clostridium perfringens research

Resumo

Thirty one Escherichia coli strains isolated from pigs with urinary tract infections were investigated for presence of virulence factors and plasmid DNA profile. The most frequent virulence factors presented by these strains were mannose-resistant fimbriae, including P. fimbriae (54.8%) and aerobactin production (45.2%). The pap) operon, detected by PCR, was found in 54.8% of the strains, which is similar to its frequency in human strains. Other characteristics such as the presence of mannose-sensitive hemagglutinin (16.1%), indicative of type 1 pili, and production of hemolysin (25.8%), colicin (38.7%) and toxins (22.6% for LT and for VT) were less frequent. No strains were positive for STa production. Plasmid profiles were variable among isolates from either the same or different farms.

Referência(s)