TABLE 2

Molecular mechanisms of resistance of the five Escherichia coli strains employed in this study

Mechanism of resistancePresence in strain:
CREC01CREC02CREC03CREC04CREC05
GeneticblaCTXM-1, blaCMY, blaNDMblaTEM, blaCTXM-1, blaOXA-48blaCTXM-1, blaCMY, blaNDMblaTEM, blaKPC-2blaCTXM-1, blaCMY, blaNDM
Downregulation of porin gene expressionOmpFOmpC, OmpFOmpC, OmpFNoneNone
Presence of efflux pumpsYesYesYesYesYes