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  • Title: Insertion/deletion polymorphism on ACE gene is associated with endothelial dysfunction in young patients with hypertension.
    Author: Penesova A, Cizmarova E, Kvetnansky R, Koska J, Sedlakova B, Krizanova O.
    Journal: Horm Metab Res; 2006 Sep; 38(9):592-7. PubMed ID: 16981142.
    Abstract:
    Endothelial dysfunction, insulin resistance (IR) and genetic predispositions are important risk factors of hypertension. Aim of our study was to test the hypothesis, whether insertion/deletion (I/D) polymorphism on the angiotensin converting enzyme (ACE) gene and M235T polymorphism on angiotesinogen gene (AGT) correlates with parameters of insulin sensitivity and plasminogen activator inhibitor (PAI-1) levels in newly diagnosed hypertensive patients as compared with normotensive controls. Blood pressure (BP), fasting plasma glucose, insulin, epinephrine, norepinephrine and PAI-1 concentrations were determined in 30 male patients with hypertension grade 1 (HT) and in 31 matched healthy subjects (NT). Insulin resistance was estimated using IR HOMA formula. Patients with HT had increased levels of PAI-1, norepinephrine, fasting plasma insulin levels, IR HOMA (p<0.001) compared to controls. Subjects (HT and NT) with DD and ID genotype had a significantly higher systolic BP (p<0.05) and PAI-1 compared to those with II genotype. Homozygous subjects 235T had a higher systolic BP and higher levels of epinephrine and norepinephrine than heterozygous or homozygous M235 (p<0.05). In conclusion, no association was found between M235T polymorphism and insulin resistance or PAI-1 levels, but results indicate relationship between I/D polymorphism of the ACE gene and plasma PAI-1 levels in the early stage of hypertension.
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