| Full text | |
| Author(s): |
Knoebl, Terezinha
[1, 2]
;
Saidenberg, Andre B. S.
[3, 1]
;
Moreno, Andrea M.
[3]
;
Gomes, Tania A. T.
[4]
;
Vieira, Monica A. M.
[4]
;
Leite, Domingos S.
[5]
;
Blanco, Jesus E.
[6]
;
Ferreira, Antonio J. P.
[3]
Total Authors: 8
|
| Affiliation: | [1] FMU, Lab Epidemiol & Doencas Infecciosas, BR-04505002 Sao Paulo - Brazil
[2] Fac Med Vet Grande ABC Uniabc, BR-09080511 Santo Andre, SP - Brazil
[3] Univ Sao Paulo, Fac Med Vet & Zootecnia, BR-05508270 Sao Paulo - Brazil
[4] Univ Fed Sao Paulo Unifesp, Escola Paulista Med, BR-04023062 Sao Paulo - Brazil
[5] Univ Estadual Campinas Unicamp, Inst Biol, BR-13081970 Campinas, SP - Brazil
[6] USC, Fac Vet, Dept Microbiol & Parasitol, LREC, Lugo 27002 - Spain
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | Pesquisa Veterinária Brasileira; v. 31, n. 10, p. 916-921, OCT 2011. |
| Web of Science Citations: | 7 |
| Abstract | |
Escherichia coli isolates from 24 sick psittacine birds were serogrouped and investigated for the presence of genes encoding the following virulence factors: attaching and effacing (eae), enteropathogenic E. coli EAF plasmid (EAF), pili associated with pyelonephritis (pap), S fimbriae (sfa), afimbrial adhesin (afa), capsule K1 (neu), curli (crl, csgA), temperature-sensitive hemagglutinin (tsh), enteroaggregative heat-stable enterotoxin-1 (astA), heat-stable enterotoxin -1 heat labile (LT) and heat stable (STa and STb) enterotoxins, Shiga-like toxins (stx1 and stx2), cytotoxic necrotizing factor 1 (cnf1), haemolysin (hly), aerobactin production (iuc) and serum resistance (iss). The results showed that the isolates belonged to 12 serogroups: O7; O15; O21; O23; O54; O64; O76; O84; O88; O128; O152 and O166. The virulence genes found were: crl in all isolates, pap in 10 isolates, iss in seven isolates, csgA in five isolates, iuc and tsh in three isolates and eae in two isolates. The combination of virulence genes revealed 11 different genotypic patterns. All strains were negative for genes encoding for EAF, EAEC, K1, sfa, afa, hly, cnf, LT, STa, STb, stx1 and stx2. Our findings showed that some E. coli isolated from psittacine birds present the same virulence factors as avian pathogenic E. coli (APEC), uropathogenic E. coli (UPEC) and Enteropathogenic E. coli (EPEC) pathotypes. (AU) | |