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Methods 110 uropathogenic Escherichia coli strains (UPEC) obtained from the Institute of Microbiology and Immunology of the Medical Faculty in Ljubljana were screened by PCR withprimers specific for the following toxin encoding genes: hlyA (haemolysin), cnf1 (cytotoxicnecrotising factor 1), usp (uropathogenic specific protein USP) and ibeA (invasin). Dotblot hybridisation experiments were performed to validate the PCR assays.Results In 44% of the strains usp gene sequences were detected. The prevalence of hlyA and cnf1was 25% and 23%, respectively. Only 9% of the strains harbored ibeA. The majority of thetested toxin encoding genes was found in strains belonging to the B2 phylogenetic group.Conclusions The toxin encoding genes hlyA, cnf1 and usp were strongly co-associated. Further, we founda statistically significant co-association of ibeA and usp. The prevalence of the testedtoxin encoding genes in E. coli strains from urinary tract infections isolated in Slovenia iscomparable to those from studies in other geographic regions.

PREVALENCE OF TOXIN ENCODING GENES IN ESCHERICHIACOLI ISOLATES FROM URINARY TRACT INFECTIONS INSLOVENIA