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The new risk-factors for peptic ulcers induced by the use of nonsteroidal antiinflammatory drugs, such as polymorphism of different isoenzymes of cytochrome P450 were considered in the article. The aim of the research was to study different genetic polymorphism of several ferments CYP2C9 and CYP2C19 in inclination to NSAIDS-gastropathies by the way of estimation the risk of appearance of Helicobacter pylori (HP)-positive or Hp-negative NSAIDS- induced peptic ulcers, complicated or not with upper gastrointestinal bleeding. 124 persons were examined (76 men, 48 women in the age of 56,2+/–9,1 years) with Hp-positive or Hp-negative NSAIDS-induced peptic ulcers, that were performed genotyping of isoferments of cytochrome system (CYP2C9, CYP2C19). Based on investigations of 5 different isoenzymes (CYP 2C9*2, CYP 2C9*3, CYP 2C19*2, CYP 2C19*3 and CYP 2C19*17). It was founded that peptic ulcers are strictly associated only with CYP 2C19*17-genotype, possibly due to its involvement in arachidonic acid metabolism and gastroprotection. Thus, polymorphism CYP 2C19*17 can be considered as one of the risk factors for NSAID-gastropathy though the future researches are needed.

CYPC19*17 POLYMORPHISM AS A RISK-FACTOR FOR NSAIDS-INDUCED ULCERS