High prevalence iron receptor genes of avian pathogenic Escherichia coli

Avian pathogenic Escherichia coli are known to cause significant losses in the poultry industry worldwide. Although prophylactic measures based on vaccination are advisable, until now no full heterologous protection against colibacillosis has been achieved. Since iron is an essential nutrient to the...

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Bibliographic Details
Published in:Avian pathology 2007-10, Vol.36 (5), p.411-414
Main Authors: Ons, E, Bleyen, N, Tuntufye, H.N, Vandemaele, F, Goddeeris, B.M
Format: Article
Language:English
Subjects:
Animals
bacterial infections
cell membranes
chickens
Chickens - microbiology
colibacillosis
Escherichia coli
Escherichia coli - genetics
Escherichia coli Infections - microbiology
Escherichia coli Infections - veterinary
Escherichia coli Proteins - genetics
Escherichia coli Proteins - metabolism
genes
genotype
iron
Iron - metabolism
microbial genetics
pathogen identification
pathogenicity
polymerase chain reaction
Poultry Diseases - microbiology
receptors
strain differences
strains
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Summary:Avian pathogenic Escherichia coli are known to cause significant losses in the poultry industry worldwide. Although prophylactic measures based on vaccination are advisable, until now no full heterologous protection against colibacillosis has been achieved. Since iron is an essential nutrient to these bacteria, the aim of this study was to investigate the prevalence of 12 outer-membrane iron receptor genes in 239 pathogenic strains isolated from clinical cases of colibacillosis in chickens. Five multiplex polymerase chain reactions were developed as a tool for efficient screening. Among the 239 avian E. coli isolates, 100% were positive for fhuE and fepA, 96.2% for fiu, 92.9% for cir, 92.5% for iroN, 87.4% for iutA, 63.2% for fecA, 53.1% for fyuA, 46.9% for fhuA, 45.6% for ireA, 41.8% for chuA and 4.6% for iha.
ISSN:0307-9457
1465-3338
DOI:10.1080/03079450701589183