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  • Title: The effect of metformin treatment on VEGF and PAI-1 levels in obese type 2 diabetic patients.
    Author: Ersoy C, Kiyici S, Budak F, Oral B, Guclu M, Duran C, Selimoglu H, Erturk E, Tuncel E, Imamoglu S.
    Journal: Diabetes Res Clin Pract; 2008 Jul; 81(1):56-60. PubMed ID: 18358555.
    Abstract:
    The aim of the study was to evaluate the effect of metformin on markers of endothelial function, vascular inflammation and factors of thrombosis in obese type 2 diabetic patients. Twenty-four type 2 diabetic patients (15 female, 9 male) previously under medical nutrition treatment (MNT)+regular exercise programme (REP) without chronic micro or macrovascular complications with the mean age of 50.5+/-1.5 years, diabetes duration of 17.9+/-6.3 months and body mass index (BMI) of 31.7+/-0.8 kg/m(2) were enrolled in the study. In the first 4 weeks, all the patients continued MNT+REP. In the following 12 weeks, metformin (mean daily dosage of 1381+/-85 mg) was added. After the first period with MNT+REP, BMI, waist circumference, fat percentage, blood pressure and HDL cholesterol decreased significantly. After metformin addition, there was a significant decrement in BMI, waist circumference, fat percentage, fasting and postprandial plasma glucose, hemoglobin A1C, plasminogen activator inhibitor-1 (PAI-1), vascular endothelial growth factor (VEGF) and increment in beta cell reserve values of the patients. Our results indicated that, metformin addition had beneficial effect on VEGF and PAI-1 levels in obese type 2 diabetic patients under MNT+REP, independent from its' favourable effects on BMI and glycemic control.
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