Bacteriocin-encoding genes and ExPEC virulence determinants are associated in human fecal Escherichia coli strains.

ABSTRACT:

Background

A set of 1181 E. coli strains of human fecal origin isolated in the South Moravia region of the Czech Republic was collected during the years 2007-2010. Altogether, 17 virulence determinants and 31 bacteriocin-encoding genes were tested in each of them.

Results

The occurrence of bacteriocin-encoding genes was found to be positively correlated with the occurrence of E. coli virulence factors. Based on the presence of virulence factors and their combinations, E. coli strains were classified as non-pathogenic E. coli (n = 399), diarrhea-associated E. coli (n = 179) and ExPEC strains (n = 603). Non-pathogenic and diarrhea-associated E. coli strains had a low frequency of bacteriocinogeny (32.6% and 36.9%, respectively). ExPEC strains encoding S-fimbriae (sfa), P-fimbr

SUBMITTER: Micenkova L 

PROVIDER: S-EPMC4021369 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature