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OBJECTIVEIntroduction: Nowadays, the study of biological safety of modern cationic surface-active antiseptics with a wide antimicrobial spectrum has acquired particular importance. The aim was to study antimicrobial effectiveness of antiseptics decamethoxin, miramistin and their influence on nuclear DNA fragmentation and cellular cycle.PATIENTS AND METHODSMaterials and methods: A comparative microbiological study of antimicrobial efficacy and a cytometric study of the effect of decamethoxin 0,02% and miramistin 0,01% on the cellular cycle were carried out. Antimicrobial activity of decamethoxin and miramistin was estimated by their minimal inhibitory and minimal microbicidal concentrations against opportunistic microorganisms using serial double dilution technique. Decamethoxin and miramistin cytotoxicity on anterior corneal epithelial cells, after their two-week daily instillation into the eyes of a Vistar line male rats was studied using flow cytometry. The parameters of epithelial cellular cycle, nuclear DNA fragmentation and apoptosis under the influence of antiseptics were registered.RESULTSResults: High antimicrobial effect of decamethoxin and miramistin against Gram-positive, Gram-negative bacteria with the significant advantages of decamethoxin were found (р<0,001). Decamethoxin caused minimal influence on anterior corneal epithelial cells, the insignificant decrease of their proliferation index, low increase of apoptosis (0.68%), no difference of mitotic activity (p>0.05). But the use of miramistin resulted in the significant increase of nuclear DNA fragmentation, decrease of proliferative activity (р<0.05).CONCLUSIONConclusions: Higher antimicrobial effect against a wide range of opportunistic pathogens is proved in decamethoxin 0,02% comparably to miramistin 0,01% (р<0,001). In prolonged antiseptic use of the first one there were found no cytotoxic and no pro-apoptotic effects on the epithelium (р<0,05).

THE RESEARCH OF ANTIMICROBIAL EFFICACY OF ANTISEPTICS DECAMETHOXIN, MIRAMISTIN AND THEIR EFFECT ON NUCLEAR DNA FRAGMENTATION AND EPITHELIAL CELL CYCLE