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Characterization of extraintestinal Escherichia coli isolated from a peacock (Pavo cristatus) with colisepticemia.
Avian Dis. 2012 Jun; 56(2):436-40.AD

Abstract

Extraintestinal infections by avian pathogenic strains of Escherichia coli (APEC) are commonly reported in poultry, but there is little information on infections by APEC in other bird species. Here we report on the characterization of extraintestinal E. coli isolated from a domesticated peacock, from the south of Brazil, that died of colisepticemia. Necropsy examination revealed congested liver, hypertrophied kidneys, peritonitis, severe typhlitis suggestive of coligranuloma, pneumonia, and airsacculitis--typical signs of colisepticemia. The isolates from lungs, kidney, heart, intestine, liver, and bone marrow all harbored the same virulence-associated factors (iucD, colV, iss, mat, fimC, ompA, traT crl, csgA vgrG, and hcp), yielded the same band pattern in amplified ribosomal DNA restriction analysis, and were allocated to the Escherichia coli Reference Collection group B1. The isolates were resistant to bacitracin, trimethoprim, and tetracycline, but displayed slight differences in their resistance to other antimicrobials. The isolates also differed in their virulence in 1-day-old chickens, but none displayed high virulence in vivo. We conclude that the peacock died of colisepticemia after it was infected with an extraintestinal E. coli strain of low virulence that nevertheless harbored virulence factors generally associated with APEC. This study represents the first characterization of an APEC isolated from a nonpoultry bird species.

Authors+Show Affiliations

Departamento de Biofísica, Universidade Federal do Rio Grande do Sul, P.O. Box 15005, 91501-970, Porto Alegre, RS, Brazil.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Case Reports
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22856209

Citation

Barbieri, Nicolle Lima, et al. "Characterization of Extraintestinal Escherichia Coli Isolated From a Peacock (Pavo Cristatus) With Colisepticemia." Avian Diseases, vol. 56, no. 2, 2012, pp. 436-40.
Barbieri NL, Tejkowski TM, de Oliveira AL, et al. Characterization of extraintestinal Escherichia coli isolated from a peacock (Pavo cristatus) with colisepticemia. Avian Dis. 2012;56(2):436-40.
Barbieri, N. L., Tejkowski, T. M., de Oliveira, A. L., de Brito, B. G., & Horn, F. (2012). Characterization of extraintestinal Escherichia coli isolated from a peacock (Pavo cristatus) with colisepticemia. Avian Diseases, 56(2), 436-40.
Barbieri NL, et al. Characterization of Extraintestinal Escherichia Coli Isolated From a Peacock (Pavo Cristatus) With Colisepticemia. Avian Dis. 2012;56(2):436-40. PubMed PMID: 22856209.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of extraintestinal Escherichia coli isolated from a peacock (Pavo cristatus) with colisepticemia. AU - Barbieri,Nicolle Lima, AU - Tejkowski,Thiago Moreira, AU - de Oliveira,Aline Luisa, AU - de Brito,Benito Guimarães, AU - Horn,Fabiana, PY - 2012/8/4/entrez PY - 2012/8/4/pubmed PY - 2012/8/24/medline SP - 436 EP - 40 JF - Avian diseases JO - Avian Dis VL - 56 IS - 2 N2 - Extraintestinal infections by avian pathogenic strains of Escherichia coli (APEC) are commonly reported in poultry, but there is little information on infections by APEC in other bird species. Here we report on the characterization of extraintestinal E. coli isolated from a domesticated peacock, from the south of Brazil, that died of colisepticemia. Necropsy examination revealed congested liver, hypertrophied kidneys, peritonitis, severe typhlitis suggestive of coligranuloma, pneumonia, and airsacculitis--typical signs of colisepticemia. The isolates from lungs, kidney, heart, intestine, liver, and bone marrow all harbored the same virulence-associated factors (iucD, colV, iss, mat, fimC, ompA, traT crl, csgA vgrG, and hcp), yielded the same band pattern in amplified ribosomal DNA restriction analysis, and were allocated to the Escherichia coli Reference Collection group B1. The isolates were resistant to bacitracin, trimethoprim, and tetracycline, but displayed slight differences in their resistance to other antimicrobials. The isolates also differed in their virulence in 1-day-old chickens, but none displayed high virulence in vivo. We conclude that the peacock died of colisepticemia after it was infected with an extraintestinal E. coli strain of low virulence that nevertheless harbored virulence factors generally associated with APEC. This study represents the first characterization of an APEC isolated from a nonpoultry bird species. SN - 0005-2086 UR - https://www.unboundmedicine.com/medline/citation/22856209/Characterization_of_extraintestinal_Escherichia_coli_isolated_from_a_peacock__Pavo_cristatus__with_colisepticemia_ L2 - https://doi.org/10.1637/9921-090811-Case.1 DB - PRIME DP - Unbound Medicine ER -