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  • Title: Insulin sensitivity in obese hypertensive dyslipidemic patients treated with enalapril or atenolol.
    Author: Morel Y, Gadient A, Keller U, Vadas L, Golay A.
    Journal: J Cardiovasc Pharmacol; 1995 Aug; 26(2):306-11. PubMed ID: 7475056.
    Abstract:
    We evaluated the effects of enalapril [angiotensin converting enzyme (ACE) inhibitor] in comparison with atenolol (beta-blocker) on insulin sensitivity and serum lipoprotein concentration in obese hypertensive dyslipidemic patients. Twenty-eight hypertensive [mean blood pressure (MAP) 152 +/- 3/103 +/- 1 mm Hgl], obese [mean body mass index (BMI) 30 + 1 kg/m2A], dyslipidemic [total triglycerides 2.0 +/- 0.2 mM and/or high density lipoprotein (HDL) cholesterol 1.1 +/- 0.1 mM and low density lipoprotein (LDL) cholesterol 4.5 +/- 0.2 mM] outpatients were randomized in two groups receiving enalapril or atenolol for 12 weeks, in an investigator-blinded, parallel, comparative two-center trial. Insulin sensitivity was assessed by a modified insulin suppression test. Blood pressure (BP), insulin sensitivity, and serum lipoprotein concentrations were compared before and after each treatment and between the two treated groups. BP decreased significantly and comparably during enalapril and atenolol treatment (p < or = 0.01). The sensitivity to insulin improved by 15% (p = 0.03) in the enalapril group and worsened by 17% (p < or = 0.01) in the atenolol group. Serum lipoprotein concentrations were not modified by any treatment. The improvement in insulin sensitivity caused by enalapril treatment appears to be an advantage as compared with atenolol treatment in hypertensive obese and dyslipidemic patients, whereas the BP-lowering efficacy of the two drugs is similar. Because this effect has been reported with other ACE inhibitors, it appears to be characteristic of the entire class of ACE inhibitors.
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