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Virulence-associated genes in avian pathogenic Escherichia coli from laying hens in Apulia, Southern Italy.
Br Poult Sci. 2012; 53(4):465-70.BP

Abstract

1. Escherichia coli isolated from lesions (Avian Pathogenic E. coli - APEC) of layer hens affected by colibacillosis and from intestinal contents of clinically-healthy birds (Avian Faecal E. coli - AFEC) were serotyped. All the isolates were investigated for the presence of virulence genes to determine which genes were more closely related to those from lesions. 2. A number of different serogroups were detected, O78 being predominant among the isolates from colibacillosis. 3. E. coli isolated from lesions were not linked to a specific pathotype (set of common virulence genes). 4. The presence of the virulence genes, with the exception of astA, was associated more generally with APEC strains. 5. Statistically, genes such as cva/cvi, tsh, iss, irp2 and iucD were more related to isolates from colibacillosis. 6. It is suggested that the detection of these genes in a rapid and inexpensive test for field practitioners could provide useful information about the potential virulence of E. coli isolated in commercial layer flocks.

Authors+Show Affiliations

Dipartimento di Sanità Pubblica e Zootecnia, Facoltà di Medicina Veterinaria, Università degli Studi di Bari, 70010 Valenzano, Bari, Italy. e.circella@veterinaria.uniba.itNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23130581

Citation

Circella, E, et al. "Virulence-associated Genes in Avian Pathogenic Escherichia Coli From Laying Hens in Apulia, Southern Italy." British Poultry Science, vol. 53, no. 4, 2012, pp. 465-70.
Circella E, Pennelli D, Tagliabue S, et al. Virulence-associated genes in avian pathogenic Escherichia coli from laying hens in Apulia, Southern Italy. Br Poult Sci. 2012;53(4):465-70.
Circella, E., Pennelli, D., Tagliabue, S., & Camarda, A. (2012). Virulence-associated genes in avian pathogenic Escherichia coli from laying hens in Apulia, Southern Italy. British Poultry Science, 53(4), 465-70. https://doi.org/10.1080/00071668.2012.711904
Circella E, et al. Virulence-associated Genes in Avian Pathogenic Escherichia Coli From Laying Hens in Apulia, Southern Italy. Br Poult Sci. 2012;53(4):465-70. PubMed PMID: 23130581.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Virulence-associated genes in avian pathogenic Escherichia coli from laying hens in Apulia, Southern Italy. AU - Circella,E, AU - Pennelli,D, AU - Tagliabue,S, AU - Camarda,A, PY - 2012/11/8/entrez PY - 2012/11/8/pubmed PY - 2013/4/23/medline SP - 465 EP - 70 JF - British poultry science JO - Br. Poult. Sci. VL - 53 IS - 4 N2 - 1. Escherichia coli isolated from lesions (Avian Pathogenic E. coli - APEC) of layer hens affected by colibacillosis and from intestinal contents of clinically-healthy birds (Avian Faecal E. coli - AFEC) were serotyped. All the isolates were investigated for the presence of virulence genes to determine which genes were more closely related to those from lesions. 2. A number of different serogroups were detected, O78 being predominant among the isolates from colibacillosis. 3. E. coli isolated from lesions were not linked to a specific pathotype (set of common virulence genes). 4. The presence of the virulence genes, with the exception of astA, was associated more generally with APEC strains. 5. Statistically, genes such as cva/cvi, tsh, iss, irp2 and iucD were more related to isolates from colibacillosis. 6. It is suggested that the detection of these genes in a rapid and inexpensive test for field practitioners could provide useful information about the potential virulence of E. coli isolated in commercial layer flocks. SN - 1466-1799 UR - https://www.unboundmedicine.com/medline/citation/23130581/Virulence_associated_genes_in_avian_pathogenic_Escherichia_coli_from_laying_hens_in_Apulia_Southern_Italy_ L2 - http://www.tandfonline.com/doi/full/10.1080/00071668.2012.711904 DB - PRIME DP - Unbound Medicine ER -