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  • Title: Meta-analysis of studies using selective alpha1-blockers in patients with hypertension and type 2 diabetes.
    Author: Glanz M, Garber AJ, Mancia G, Levenstein M.
    Journal: Int J Clin Pract; 2001 Dec; 55(10):694-701. PubMed ID: 11777296.
    Abstract:
    This meta-analysis of published studies evaluated the effect of selective alpha1-blockers on lipid and carbohydrate profiles and blood pressure (BP) as well as tolerability in patients with hypertension and type 2 diabetes. Publications identified via MEDLINE were used. Text and bibliographies of retrieved articles were examined for additional references. Clinical trials with a randomised comparative structure (placebo and active treatment arms) and controlled studies with other structures were included. Of the 27 citations identified, 22 studies were selected for inclusion, and five were rejected. Efficacy and safety data, lipid and carbohydrate profiles, and study and patient characteristics were extracted by two investigators independently. The mean pooled results showed beneficial effects of selective alpha1-blockers on total serum cholesterol (TC), high-density lipoprotein (HDL) cholesterol, and systolic and diastolic BP. The results also showed doxazosin had beneficial effects on fasting glucose levels, insulin sensitivity, TC, HDL cholesterol, low-density lipoprotein (LDL) cholesterol, HDL/TC ratio, and systolic and diastolic BP. The risk difference was equivalent between the alpha1-blocker group and the control group for postural hypotension or syncope. This meta-analysis demonstrates a number of favourable effects of therapy with selective alpha1-blockers in hypertensive patients with type 2 diabetes. These agents provide an effective modality for reducing BP, with favourable effects on lipid, no deterioration in glycaemic control, and little risk of orthostatic hypotension.
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