Abstract

Objective: Objective: to assess the relationship between NGAL concentration as an indicator of tubular disorders, and genetic markers of cardiovascular risk in hypertensive patients. Design and method: Materials and methods: 89 patients of working age with hypertension (mean age 48.32 ± 8.71) were examined, who were divided into 2 groups depending on serum NGAL. Group 1 - 20 patients with NGAL levels above reference values, Group 2 - 69 patients with NGAL levels in the range of normal values. For all patients, to evaluate tubular renal function, the concentration of NGAL in serum was determined by ELISA. All patients were examined for genotypes of AGT Thr174Met, GNB3 C825T, MTHFR C677T, MTRR Ile22Met, ApoE Cys130Arg, PRARA rs4253778. Results: Results: patients in the groups did not significantly differ in age, gender, risk factors, concomitant diseases and therapy, blood pressure and lipid profile. In group 1, the occurrence of AGT, MTHFR, and PRARA gene polymorphism was significantly higher in heterozygous form than in group 2 (p = 0.002, p < 0.001, and p = 0.037, respectively). Patients in the groups did not significantly differ in occurrence of GNB3, MTRR, and ApoE gene polymorphism. Correlation analysis showed a direct relationship between the concentration of NGAL in the blood and the presence of AGT gene polymorphism (r = 0.38; p < 0.05), GNB3 (r = 0.33; p < 0.05), MTHFR (r = 0.35; p < 0.05). The association of NGAL with the polymorphism of the GNB3, MTRR, and ApoE genes was not statistically significant. Conclusions: Conclusions: in patients of working age with hypertension, tubular dysfunction, assessed by the concentration of NGAL in the blood, is associated with the presence of AGT, MTHFR, PRARA gene polymorphism in a heterozygous form.

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