Vascular endothelial growth factor as a marker of endothelial dysfunction in poly- and comorbidity: focus on hypertension, type 2 diabetes mellitus and subclinical hypothyroidism

Abstract

Background. The goal of our study was to investigate the content and particularities of change of vascular endothelial growth factor-A (VEGF-A) levels as a marker of endothelial dysfunction (ED) in patients with hypertension (HT) with or without type 2 diabetes mellitus (T2DM) and with or without subclinical hypothyroidism (SH). Material and methods. Two hundred and eleven patients with hypertension stage II were divided into 3 groups: Group 1-with HT (n = 55); Group 2-with AH and T2DM (n = 97); Group 3-with HT, T2DM and SH (n = 59). The patients in Group 3 were divided into 3 subgroups depending on TSH levels: 3a (n = 26)-TSH 4.0-6.0 mIU/L; 3b (n = 20)-TSH 6.1-8.0 mIU/L; 3c (n = 13)-TSH 8.1-10.0 mIU/L. We evaluated lipids, carbohydrate metabolism, serum insulin concentration, insulin resistance index-HOMA, and the level of VEGF-A in plasma. Results. The levels of VEGF-A in Group 2 was significantly lower vs. Group1 (323.94 ± 22.17 pg/mL and 413.15 ± 29.02 pg/mL, respectively (p < 0.05)). The patients in Group 3d had lower VEGF-A levels than the patients in Group 1, but higher than those in Group 2. Among Group 3 patients, the levels of VEGF-A were the lowest in the 3a subgroup (375.91 ± 19.81 pg/mL), significantly different from 3b and 3c subgroups (p < 0.05), for which no differences were found (p > 0.05.). In the 3a subgroup VEGF-A levels were significantly higher than in Group 2 patients (p < 0.05). Conclusion. These data confirms the hypothesis of increasing ED in hypothyroidism even at the subclinical level.

Role of plasma 8-OXO-2’-deoxyguanosine in target organ damage in patients with hypertension and type 2 diabetes

“…In our previous study, we have shown that mutually aggravating effect of endothelial dysfunction, dyslipidemia, hyperglycemia and insulin resistance on the clinical course of HTN and T2DM may exist [23]. In this study, differences in TC, LDL-C, HOMA-IR and SBP were observed with relation to 8-OHdG plasma levels.…”

Elevated Levels of the Endothelial Molecules ICAM-1, VEGF-A, and VEGFR2 in Microscopic Asymptomatic Malaria

“…There is a strong evidence of endothelial activation in symptomatic malaria including uncomplicated and severe malaria [ 37 , 38 , 43 ], while similar data in asymptomatically infected persons are limited. In this study, we determined whether plasma levels of the angiogenic marker VEGF-A and its receptor VEGFR2 as well as the endothelial activation marker ICAM-1 are increased in asymptomatic children with either microscopic parasitemia or submicroscopic parasitemia compared with uninfected age-matched controls.…”

“…Increasing levels of endothelial activation molecules have been associated with adverse outcomes in diseases like diabetes, resulting in endothelial dysfunction and organ damage [ 43 , 53 , 54 ]. The recent malaria–high-blood pressure hypothesis, which seeks to determine the effect of chronic endothelial activation in malaria on the development of cardiovascular diseases, may suggest that endothelial cell activation in asymptomatic infection is an early indicator of some potential health complications [ 55 , 56 ].…”