Serum omentin-1 levels in hypertensive patients

Hypertension (HT) is a disease that can cause death due to multiple target organ damage and eventually related vascular system damage. High blood pressure is known increased inflammatory activity and to cause endothelial dysfunction has been showed in HT patients. Omentin-1 is a glucoprotein of the adiponectin family released from visceral adipose tissue, endothelial cells, and visceral fat stromal-vascular cells. It has anti-inflammatory effect and circulating omentin-1 concentration correlates negatively with waist circumference, insulin resistance, and body-mass index. Serum omentin-1 is used as a biomarker of coronary artery disease, obesity, cancer, metabolic syndrome, inflammatorydisease, atherosclerosis, and diabetes mellitus. The aim of our study is to investigate circulating omentin-1 levels in HT patients compared to healthy normotensive controls. Patients diagnosed with new essential HT (n = 61) and healthy normotensive individuals (n = 60) were enrolled in this study. The HT group was separated into two subgroups. There were 30 patients in stage 2 HT group and 31 patients in stage 1 HT group. Omentin-1 levels were significantly lower both in stage 1 and 2 HT subgroup as compared with the normotensive controls (72.19 ± 54.33 ng/ml for stage 1 HT subgroup; 62.45 ± 47.01 ng/ml for stage 2 HT subgroup; and, 147.84 ± 58.55 ng/ml for healthy normotensive controls; overall P < 0.001). The present study demonstrated that serum Omentin-1 levels decreased in patients with HT compared with normotensive controls. These lower concentrations may be attributed to a combined outcome of endothelial dysfunction, renal injury, and inflammation in the setting of hypertension.