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@article{1358321,
author = {Micenková, Lenka and Bosák, Juraj and Vrba, Martin and Ševčíková, Alena and Šmajs, David},
article_location = {London},
article_number = {218},
doi = {http://dx.doi.org/10.1186/s12866-016-0835-z},
keywords = {Escherichia coli; ExPEC; Colicin; Microcin; Virulence factor; Bacteriocinogeny},
language = {eng},
issn = {1471-2180},
journal = {BMC Microbiology},
title = {Human extraintestinal pathogenic Escherichia coli strains differ in prevalence of virulence factors, phylogroups, and bacteriocin determinants},
volume = {16},
year = {2016}
}
TY - JOUR
ID - 1358321
AU - Micenková, Lenka - Bosák, Juraj - Vrba, Martin - Ševčíková, Alena - Šmajs, David
PY - 2016
TI - Human extraintestinal pathogenic Escherichia coli strains differ in prevalence of virulence factors, phylogroups, and bacteriocin determinants
JF - BMC Microbiology
VL - 16
IS - 218
SP - 1-8
EP - 1-8
PB - BioMed Central
SN - 14712180
KW - Escherichia coli
KW - ExPEC
KW - Colicin
KW - Microcin
KW - Virulence factor
KW - Bacteriocinogeny
N2 - Background: The study used a set of 407 human extraintestinal pathogenic E. coli strains (ExPEC) isolated from (1) skin and soft tissue infections, (2) respiratory infections, (3) intra-abdominal infections, and (4) genital smears. The set was tested for bacteriocin production, for prevalence of bacteriocin and virulence determinants, and for phylogenetic typing. Results obtained from the group of ExPEC strains were compared to data from our previously published analyses of 1283 fecal commensal E. coli strains. Results: The frequency of bacteriocinogeny was significantly higher in the set of ExPEC strains (63.1 %), compared to fecal E. coli (54.2 %; p < 0.01). Microcin producers and microcin determinants dominated in ExPEC strains, while colicin producers and colicin determinants were more frequent in fecal E. coli (p < 0.01). Higher production of microcin M and lower production of microcin B17, colicin Ib, and Js was detected in the set of ExPEC strains. ExPEC strains had a significantly higher prevalence of phylogenetic group B2 (52.6 %) compared to fecal E. coli strains (38.3 %; p < 0.01). Conclusions: Human ExPEC strains were shown to differ from human fecal strains in a number of parameters including bacteriocin production, prevalence of several bacteriocin and virulence determinants, and prevalence of phylogenetic groups. Differences in these parameters were also identified within subgroups of ExPEC strains of diverse origin. While some microcin determinants (mM, mH47) were associated with virulent strains, other bacteriocin types (mB17, Ib, and Js) were associated with fecal flora.
ER -
MICENKOVÁ, Lenka, Juraj BOSÁK, Martin VRBA, Alena ŠEVČÍKOVÁ and David ŠMAJS. Human extraintestinal pathogenic Escherichia coli strains differ in prevalence of virulence factors, phylogroups, and bacteriocin determinants. \textit{BMC Microbiology}. London: BioMed Central, 2016, vol.~16, No~218, p.~1-8. ISSN~1471-2180. Available from: https://dx.doi.org/10.1186/s12866-016-0835-z.
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