Comparison between avian pathogenic (APEC) and avian faecal (AFEC) Escherichia coli isolated from different regions in Brazil

Author(s)

Silveira, F. ; Maluta, R. P. ; Tiba, M. R. ; de Paiva, J. B. ; Guastalli, E. A. L. ; da Silveira, W. D.

• Document type: Journal article
• Source: VETERINARY JOURNAL; v. 217, p. 65-67, NOV 2016.
• Web of Science Citations: 3

Abstract

Detection and analysis of virulence-associated genes (VAGs) of avian pathogenic Escherichia coli (APEC) may be helpful to distinguish pathogenic from commensal faecal strains (AFEC). The aim of this study was to characterise 120 isolates of avian Escherichia coli, comprising 91 APEC (from diseased birds) and 29 AFEC (from healthy chickens), collected in Brazil. Phylogenetic analysis and in vivo pathogenicity testing was performed on 38 VAGs. The VAGs iucD, iutA, iroN, fepC, ompT, cvi and hlyF were statistically associated with medium and high pathogenicity (MP/HP) strains. A minimal group of seven VAGs may be required to accurately discriminate pathogenic and non-pathogenic avian strains of E. coli in Brazil. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 12/04931-6 - Molecular characterization of avian pathogenic (APEC) and human uropathogenic (UPEC) Escherichia coli strains
• Grantee: Wanderley Dias da Silveira
• Support Opportunities: Regular Research Grants
• FAPESP's process: 12/05073-3 - MOLECULAR CHARACTERIZATION OF AVIAN PATHOGENIC (APEC) AND HUMAN UROPATHOGENIC (UPEC) ESCHERICHIA COLI LINEAGES
• Grantee: Renato Pariz Maluta
• Support Opportunities: Scholarships in Brazil - Post-Doctoral