Biofilm-producing potential of urinary pathogens isolated from chronic and recurrent urinary tract infections and impact of biofilm on gentamicin and colistin in vitro efficacy.

Aim: The presented study was to compare in vitro biofilm production by bacterial strains from chronic/recurrent and from acute non-complicated UTIs. The activity of gentamicin and colistin on biofilm form of these strains has also been detected, with goal to predict the gentamicin and colistin therapeutic efficacy in the antimicrobial treatment of patients with a suspected presence of biofilm in urinary tract.

Material And Methods: The group of 40 bacterial strains repeatedly isolated from patients with chronic or recurrent UTIs was compared with the group of 40 strains from acute UTIs.