ВСТРЕЧАЕМОСТЬ АЛЛЕЛЕЙ И ГЕНОТИПОВ ПО АЛЛЕЛЬНЫМ ВАРИАНТАМ CYP2С9*2 И CYP2С9*3 СРЕДИ БОЛЬНЫХ С БОЛЕВЫМ СИНДРОМОМ, ПРИНИМАВШИХ НЕСТЕРОИДНЫЕ ПРОТИВОВОСПАЛИТЕЛЬНЫЕ СРЕДСТВА

Abstract

Abstract. Introduction. The most clinically significant polymorphic markers of the CYP2C9 gene are the amino acid substitutions of CYP2C9*2. One of the human cytochrome P450 types, i.e., cytochrome CYP2C19, is essential to the metabolism of some drugs, including proton pump inhibitors. Genetic polymorphism of СУР2С19 has some pronounced interindividual differences. Significance of genetic polymorphism is detected where the occurrence of variant alleles exceeds 1% in the population. Aim of the study was to improve the principles of pharmacotherapy with nonsteroidal anti-inflammatory drugs, as related to the frequency of alleles and genotypes on the allelic variants of CYP2С9*2 and CYP2С9*3 in pain syndrome patients taking nonsteroidal anti-inflammatory drugs. Materials and Methods. The study included 69 patients with pain syndrome. Association between being the carrier of genotypes on the CYP2С9*2 and CYP2С9*3 alleles and developing gastropathies as reactions to administering anti-inflammatory drugs was investigated by conducting a prospective case-control study. Molecular genetic testing was performed based on the Laboratory of Medical Genetics of the Research Institute of Hematology and Blood Transfusion at the Ministry of Health of the Republic of Uzbekistan. Results and Discussion. No statistically significant differences were found in the frequencies of the CYP2C9 and CYP2C19 alleles between the groups of patients with and without adverse gastrointestinal reactions to administering nonsteroidal anti-inflammatory drugs or proton pump inhibitors. Conclusions. Our findings allow us to suggest that being a carrier of the allelic CYP2C9*2 and CYP2C9*3 variants should be considered as a gastropathy risk factor of using nonsteroidal anti-inflammatory drugs. It can be assumed that, to reduce the risk of adverse reactions developed in the patients of this category to nonsteroidal anti-inflammatory drugs, the latter ones need a concomitant administration with proton pump inhibitors. It is necessary to continue studying the frequencies of the alleles and genotypes on allelic CYP2С9*2 and CYP2С9*3 variant sin pain syndrome patients taking nonsteroidal anti-inflammatory drugs.