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Table 4 Virulence determinants in AIEC and cell-detaching strains from the ECOR collection

From: High carriage of adherent invasive E. coli in wildlife and healthy individuals

ECOR strains Cell-detaching strains References
ECOR53 ECOR51 ECOR6 ECOR59 ECOR54
Virulence determinants associated with pathogenicity islands
 Two adhesin gene clusters sfa and pap + pap1.2.3
sfa1.2
+ pap1.2.3
sfa1.2
+sfa1.2 Boyd et al. [25]
 The kps capsule operon +kps1.2 + kps1.2 + kps1.2  
 The alpha-hemolysin loci hlyI and hlyII +hly2 +hly2 + hly2  
Haemolytic activity
 PCR detection of the hlyA gene + Strong haemolysis + Strong haemolysis ND ND + Strong haemolysis Lai et al. [24]
Distribution of STEC-lpfAs
 Four lpfA genetic variants designated lpfAO157/OI-141, lpfAO157/OI-154, lpfAO26 and lpfAO113 ND Toma et al. [26]
Antibiotic resistance in the ECOR collection
 Streptomycin Mazel et al. [32]
 Spectinomycin
 Sulfonamide +
 Tetracyclin +
 Ampicillin
 Kanamycin
 Chloramphenicol
 Mercuric chloride
 Ethidium bromide
ECOR strains AIEC phenotype References
ECOR43 ECOR23 ECOR36 ECOR69 ECOR52 ECOR1 ECOR2 ECOR9 ECOR15 ECOR35 ECOR45 ECOR67 ECOR44
Virulence determinants associated with pathogenicity islands
 Two adhesin gene clusters sfa and pap + pap1.2.3 + pap1.2.3
sfa1.2
+ pap1.2.3 + pap1 + pap1.2.3 Boyd et al. [25]
 The kps capsule operon + kps1.2 + kps1.2 + kps1.2 + kps1.2  
 The alpha-hemolysin loci hlyI and hlyII + hly2 + hly2  
Haemolytic activity
 PCR detection of the hlyA gene No haemolysis ND ND ND + Strong haemolysis ND ND ND ND ND ND ND ND Lai et al. [24]
Distribution of STEC-lpfAs
 Four lpfA genetic variants designated lpfAO157/OI-141, lpfAO157/OI-154, lpfAO26 and lpfAO113 lpfAO26+
lpfAO157/
OI-141+
lpfAO26+
lpfAO113+
lpfAO113+ lpfAO113+ lpfAO113+ lpfAO26+
lpfAO113+
lpfAO26+
lpfAO113+
lpfAO113+ Toma et al. [26]
Antibiotic resistance in the ECOR collection
 Streptomycin Mazel et al. [32]
 Spectinomycin
 Sulfonamide
 Tetracyclin
 Ampicillin
 Kanamycin
 Chloramphenicol
 Mercuric chloride
 Ethidium bromide