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Table 4 Prevalence of virulence genes, identified for each strain by PCR, in the 22 AIEC strains in CD and in the 5 non-IBD pediatric patients

From: Adherent-invasive Escherichia coli (AIEC) in pediatric Crohn’s disease patients: phenotypic and genetic pathogenic features

Virulence Factors % of virulence genes in AIEC isolates from CD patients (n = 22) % of virulence genes in non-IBD controls (n = 5) aP value
Adhesins pap A 0,00% 0,00% --
pap C 0,00% 0,00% --
pap EF 0,00% 0,00% --
pap G 0,00% 0,00% --
pap G allele II 13.63% 0,00% NS
pap G allele III 0,00% 0,00% --
pap G allele II e III 0,00% 0,00% --
sfa/foc DE 0,00% 0,00% --
foc G 0,00% 0,00% --
fim H 100.00% 100.00% NS
Afa/Dra BC, 0,00% 0,00% --
nfa E 0,00% 0,00% --
gaf D 0,00% 0,00% --
Capsule K 1 72.72% 0,00% 0.013
K 5 4.54% 0,00% NS
kps MT II 72.72% 0,00% 0.013
kps MT III 0,00% 0,00% --
rfc 0,00% 0,00% --
Siderophores fyu A 72.72% 0,00% 0.013
iut A 0,00% 0,00% --
Toxins cnf 1 0,00% 0,00% --
cva C 0,00% 0,00% --
hly A 0,00% 0,00% --
Invasin ibeA 81.81% 0,00% 0.001
Pathogenic island PAI 0.00% 0,00% --
Resistance to serum tra T 54.54% 0,00% NS
Transcriptional Activator gene of aggregative adhesion fimbriae aggR 4,54% 0,00% NS
CVD432 gene probe sequence of the plasmid of aggregative adhesion pAA (CVD432) 0,00% 0,00% --
  1. aNS, not significative.
  2. --, not determined.