Contribution of adipoq genetic polymorphism to the formation and course of comorbidity of non-alcoholic fatty liver disease and renoparinchemal arterial hypertension

Abstract

Introduction. Nowadays nonalcoholic fatty liver disease (NAFLD) consider as multisystem disease that is primarily associated with components of the metabolic syndrome and is associated with cardiovascular and renal impairment. The comorbidity of NAFLD with renoparenchymal arterial hypertension (RPAH) has not been sufficiently studied. The purpose of the study was to investigate the influence of G276T genetic polymorphism of ADIPOQ on the severity of metabolic disorders, inflammation, liver, artery and kidney damage in the comorbidity of NAFLD and RPAH. Materials and methods. The study included 87 patients with comorbidity of NAFLD and RPAH, grade 2. The mean age of patients was 50.78 ± 9.35 years. The vast majority of patients were overweight or obese. The control group was composed of 20 healthy volunteers. Parameters of carbohydrate and lipid metabolism, liver and kidney’s function, adiponectin, fetuin-A, cytokeratin-18, pro-inflammatory cytokines levels were investigated. For diagnostic of non-alcoholic steatosis and indication parameters of arteries, an ultrasound method was used. Results. It was found that the T allele was detected in 62 (35.6%) patients of the main group, which was significantly (p<0,05) different from the control group (22.5%). In the presence of patients with comorbidity NAFLD and RPAH G/T and T/T genotypes, carbohydrate metabolism disorders are more pronounced than in the G/G genotype. Thus, index HOMA in this group was 4.52 ± 0.87, which was significantly higher than patients with G/G genotype - 3.77 ± 0.53 (p <0.01).The G276T polymorphism of the ADIPOQ is not associated with markers of liver and kidney damage in patients with NAFLD + RPAH. The presence of G/T and T/T genotypes in patients with comorbidity of NAFLD and RPAH is associated with an increase in interleukin-6 and fetuin-A compared to the G/G genotype. Patients with comorbidity of NAFLD + RPAH and with the T allele of the polymorphic marker G276T of the ADIPOQ gene are more likely to have impaired endothelium-dependent vasodilation, indicating more significant vascular reactivity disorders - 7.72 ± 1.25% for the genotype G/G, and 7.00 ± 1.10% for the genotype G/T (p <0,01). Conclusions. The presence of the T allele of the polymorphic marker G276T of the ADIPOQ is associated with the development of comorbidity of NAFLD and RPAH.