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Type: Artigo de periódico
Title: Pathogenic characteristics of Escherichia coli strains isolated from newborn piglets with diarrhea in Brazil
Author: Martins, MD
Martinez-Rossi, NM
Ferreira, A
Brocchi, M
Yano, T
Castro, AFP
Silveira, WD
Abstract: Ninety-one Escherichia coli isolates obtained from diarrheic and normal feces of newborn piglets (0-11 days of age) from three states of Brazil were assessed for phenotypic and genotypic characteristics associated with pathogenic processes. These isolates expressed fimbriae F18ac and type 1, but not fimbriae K88, K99, 987P or F41, Genes for toxins (LT-I, STa, SLT-I, SLT-II, SLT-IIv) either individually or combined were found to be present in most of the diarrheic strains (65.7%) and in 42.8% of the non-diarrheic ones. The eaeA gene was present in 25.7% of the diarrheic isolates and in 9.5% of the non-diarrheic ones. Colicin, hemolysin and aerobactin were also found to be produced by some strains from both sources. Because of the great variety of biological characteristics associated with different illness processes, we suggest that, in Brazil, pigs may act as a reservoir for transmission of Escherichia coli strains to other animals. (C) 2000 Elsevier Science B.V. All rights reserved.
Subject: Escherichia coli
enteric infection
Country: Holanda
Editor: Elsevier Science Bv
Citation: Veterinary Microbiology. Elsevier Science Bv, v. 76, n. 1, n. 51, n. 59, 2000.
Rights: fechado
Identifier DOI: 10.1016/S0378-1135(00)00223-6
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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