Quality of Life of Patients with Hypertensive Disease and Type 2 Diabetes mellitus and Its Parameters Depending on Plasma Catestatin and Relaxin-2 Levels

Abstract

The objective: to investigate the impact of hypertensive disease (HD) and concomitant type 2 diabetes mellitus (T2DM) on the quality of life (QOL) of patients using the SF-36 questionnaire and to evaluate the peculiarities of the QOL parameters depending on plasma relaxin-2 (RLN-2) and catestatin (CTS) levels. Materials and methods. The study was conducted in accordance with the principles of the Declaration of Helsinki. 136 patients took part in the study: 106 patients with HD and 30 healthy volunteers. The patients with HD were divided into two groups. The first group included 55 patients with HD and T2DM, the second group – 51 persons with HD without T2DM. Each study participant underwent a comprehensive clinical, laboratory and instrumental examinations. All participants filled out quality of life SF-36 questionnaire and the questionary of HD patient. Concentrations of CTS and RLN-2 in blood plasma were determined by enzyme immunoassay method (E4996Hu, BT Lab, Shanghai, China and E-EL-H1582, Elabscience, USA, respectively). All patients filled the home blood pressure monitoring diaries for 31 days. Statistical data analysis was performed using the SPSS 25.0 statistical program. Results. The patients with HD had lower parameters of physical and mental components of health compared to healthy volunteers (p<0.005). It was found that the presence of concomitant T2DM leads to even a greater decrease in quality of life indicators than in patients with HD without carbohydrate metabolism disorders (p<0.05). In patients with RLN-2 levels ≥4.69 pg/ml the lower parameters of the physical component of health (p<0.05) and social functioning (p=0.012) were determined. Lower CTS scores are associated with lower QOL scores (p≤0.005). Significant negative correlations were found between average SBP (aSBP) and indicators of physical and mental components of health (p<0.001), while mean DBP had correlations only with general health and total physical component of health (p<0.05). Conclusions. HD leads to a decreased QOL of patients, which is confirmed by lower scores of the SF-36 questionnaire and established negative correlations between aSBP and QOL parameters. The presence of concomitant T2DM is associated with even a greater decline in physical and mental health components.