Comparison of ruminant and human attaching and effacing Escherichia coli (AEEC) strains

The presence of 12 genes associated with virulence in human attaching and effacing Escherichia coli (AEEC) was studied within a collection of 20 enterohemorrhagic E. coli (EHEC) and 206 atypical enteropathogenic E. coli (EPEC) isolated from ruminants. In addition, virulence genes and the clonal rela...

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Veröffentlicht in:	Veterinary microbiology 2012-03, Vol.155 (2-4), p.341-348
Hauptverfasser:	Horcajo, Pilar, Domínguez-Bernal, Gustavo, de la Fuente, Ricardo, Ruiz-Santa-Quiteria, José A., Blanco, Jesús E., Blanco, Miguel, Mora, Azucena, Dahbi, Ghizlane, López, Cecilia, Puentes, Beatriz, Alonso, María Pilar, Blanco, Jorge, Orden, José A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Atypical enteropathogenic E. coli (EPEC) Bacteriology Biological and medical sciences Diarrhea - microbiology Enterohemorrhagic E. coli Enterohemorrhagic Escherichia coli - genetics Enterohemorrhagic Escherichia coli - isolation & purification Enterohemorrhagic Escherichia coli - pathogenicity Enteropathogenic Escherichia coli - genetics Enteropathogenic Escherichia coli - isolation & purification Enteropathogenic Escherichia coli - pathogenicity EPEC O26 Escherichia coli Escherichia coli - classification Escherichia coli - isolation & purification Escherichia coli - pathogenicity Escherichia coli Infections - microbiology Escherichia coli Proteins - genetics Fundamental and applied biological sciences. Psychology Humans Intimin ρ Microbiology Miscellaneous Ruminantia Ruminants - microbiology Virulence - genetics Virulence Factors - genetics Virulence genes
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Zusammenfassung:	The presence of 12 genes associated with virulence in human attaching and effacing Escherichia coli (AEEC) was studied within a collection of 20 enterohemorrhagic E. coli (EHEC) and 206 atypical enteropathogenic E. coli (EPEC) isolated from ruminants. In addition, virulence genes and the clonal relationship of 49 atypical EPEC O26 strains isolated from humans and ruminants were compared to clarify whether ruminants serve as a reservoir of atypical EPEC for humans. A great diversity in the content of virulence gene was found. Thus, the espH, espG and map genes were detected in more than 85% of ruminant AEEC strains; the tccP2, espI, efa1/lifA, ehxA and paa genes were present in 50–70% of strains; and other genes such as tccP, espP, katP and toxB were detected in
ISSN:	0378-1135 1873-2542
DOI:	10.1016/j.vetmic.2011.08.034