Insulin resistance in young, lean male subjects with essential hypertension
Abstract
Impaired insulin action, frequently found in essential hypertension (HT), is modified by other factors, such as higher age, accumulation of body fat, dyslipidaemia, impaired glucose metabolism and endothelial dysfunction. In addition, antihypertensive and insulin-sensitizing medication itself may significantly affect cardiovascular and metabolic milieu. The aim of this study was to assess insulin sensitivity, acute insulin response, lipidaemic status and the adipokines' concentrations with regard to abdominal fat distribution in young, lean male subjects with treatment-naïve essential HT and in matched healthy normotensive (NT) subjects. We studied 27 HT patients (age: 19.9±0.6 years; body mass index (BMI): 22.9±0.5 kg m(-2)) and 15 NT controls (age: 22.3±1.0 years; BMI: 23.7±0.6 kg m(-2)). The subjects underwent an oral and an intravenous glucose tolerance test (OGTT, IVGTT) on separate days in random order. Higher fasting insulin (P<0.001), non-esterified fatty acids (P<0.05) and plasminogen activator inhibitor factor 1 concentrations (P<0.05) were found in HT patients when compared with NT patients. Despite comparable anthropometric parameters and body fat distribution assessed by magnetic resonance imaging in both groups, n...Continue Reading
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