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Development of additional criteria for development of complications in patients with arterial hypertension who are carriers of the methylenetetrahydrofolate reductase gene polymorphism

The article provides data on 114 patients with stage 2 primary arterial hypertension (AH) according to the WHO classification (2008) and the development of complications associated with hemostasis violations depending on the nationality of patients (Mordva-Moksha, Russians) and polymorphism methyltetrahydrofolate reductase (MTHFR) gene carrier state. Polymorphic genotypes were identified using polymerase chain reaction (PCR) along with traditional clinical and instrumental studies. The analysis of MTHFR gene polymorphic genotypes carriage showed a significant predominance of intermediate genotypes (88% – CT genotype at position 677, 66% – AC genotype at position 1298) regardless of nationality of patients with AH. The carriage of “unfavourable” TT genotypes of MTHFR gene at position 677 prevails in men of the Mordva-Moksha (20%) as compared with the patients of Russian nationality. During a 3-year follow-up, 12% of patients with AH (6.9% of MordvaMoksha and 5.1% of Russian) suffered acute myocardial infarction (MI) or acute cerebrovascular accident (ACVA). Cardiovascular complications (MI/ACVA) developed 1.5 times more often in Mordva patients than in patients with AH of Russian nationality. IM occurred 3 times more often in Mordva-Moksha men than in patients with AH of Russian nationality. The Mordva-Moksha men with AH, who were carriers of the “unfavourable” TT genotypes of MTHFR gene at position 677, developed a complication in the form of MI in 100% cases.