Aim. To determine the effect of the Prostanorm on the persistent potential of microorganisms isolated from the prostatic secretion of patients with chronic bacterial prostatitis.
Materials and methods. In vitro experiments were carried out on uropathogens, isolated from prostate secretions in patients with chronic bacterial prostatitis, including Escherichia coli, Staphylococcus aureus, S. haemolyticus, S. epidermidis, Enterococcus faecalis. The effect of Prostanorm (liquid extract for oral use) of NPO FarmVILAR (Russia) on the anti-cytokine activity of bacteria against regulatory cytokines (IL4, IL6, IL8, TNFα and IL17A) was evaluated by enzyme immunoassay, while anti-lysozyme trait and the ability to form biofilms was evaluated by the photometric method.
Results. Inhibitory effect of Prostanorm on the anti-lysocyme activity and the ability of microorganisms to form biofilms was found. A decrease in the anticytokine activity against IL17A and TNFa in all studied species of microorganisms was seen, including anticytokine activity against IL4, IL6, IL8 in Escherichia coli and against IL6 and IL8 in coagulase-negative staphylococci.
Conclusion. The ability of Prostanorm to reduce the persistence factors of opportunistic microorganisms in vitro is one of the possible mechanisms, proving its prostatotropic action, bacteriostatic and anti-inflammatory activity.

Keywords: anti-cytokine activity, anti-lysozyme activity, biofilm formation, prostanorm, chronic bacterial prostatitis, opportunistic microorganisms