CHARACTERISTICS OF ESCHERICHIA COLI STRAINS ISOLATED IN ACUTE APPENDICITIS AND ULCERATIVE COLITIS
Virulence factors, antimicrobial susceptibility, and belonging to phylogenetic groups of 152 strains of Escherichia coli: 65 - isolated from acute appendicitis (AA) and 87 - ulcerative colitis (UC) have been studied. According to their enzymatic properties, the isolates belonged to typical lactose-positive E. coli and pertained to 4 main phylogenetic groups (А, В1, В2, D). The virulence genes of ExPEC (fimH, pap, sfa, hlyA, cnf, iutA, afa) contained 96,9% (AA) and 89,7% (UC) of the strains. Every second strain had from two to seven virulence genes. Resistant strains to extended-spectrum cephalosporins (ESC) and produced ESBL more likely belonged to the phylogenetic group B2. All strains were susceptibility to carbapenems (meropenem) and aminoglycosides.