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Experimental evidence of antimicrobial effect of silver-coated silicon urological catheters

Objective. To study the colonization activity of clinical strains of uropathogenic Escherichia coli (UPEC) against various types of urological catheters. Materials and Methods. Biofilms of E. coli (n = 6) were formed for 24 h according to the standard method. Urological catheters made from latex, polyvinylchloride, silicon and silver-coated silicon were used as a surface for bacterial colonization. The surface roughness and hydrophobicity, biofilm mass, number of colony forming units in biofilm, and frequency of conjugation were assessed.