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Pyoinflammatory complications remain an acute problem in the post-operative period of traumatic lesions of the auxiliary apparatus of the eye (AAE). Silver both in the ionic form and in composition of chemical compounds is highly toxic for microorganisms, and as a result, it shows bactericidal effect to many bacterial strains, including gram-negative microorganisms. The peculiarity of AgNPs is efficiency of influence on the wide array of microorganisms, significant anti-biofilm effect and absence of resistance reaction. The aim of the research. To study the influence of the colloidal nano silver on formation of biofilms by microorganisms discharged from the wounds of patients with traumatic lesions of the auxiliary apparatus of the eye. Materials and methods. During 2018-2019, we examined 60 patients with traumatic lesions of the auxiliary apparatus of the eye. For evaluation of the influence of colloid nano silver solution on the processes of formation of the biofilm, we selected microorganisms which were cultured most frequently (Staphylococcus aureus, Acinetobacter spp., Klebsiella ozenae) from the patients. Results. The obtained data suggest that colloid nano silver inhibits efficiently formation of biofilms at the early stages (initiation, the 0 day of incubation) of their formation by all the three microorganisms, and the degree of inhibition of the biofilm formation did not depend on the silver concentration. The effect of colloid silver in the concentrations used by us at later stages of biofilm formation (the 3rd and the 7th day) with respect to К. ozenae is less efficient – the growth of cell biomass was observed (p≤0.05), and it did not depend on the silver concentration. At the same time, the effect of the colloid nano silver on S. aureus and Acinetobacter spp. on the 3rd and the 7th days was more efficient than at the early stage (p≤0.05). Conclusions. Nanoparticles of colloid silver are an efficient means to combat biofilms, as well as to prevent their formation.

THE INFLUENCE OF NANO-SILVER ON FORMATION OF MICROBIAL BIOFILMS IN CASES OF TRAUMATIC LESION OF THE AUXILIARY APPARATUS OF THE EYE