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  • Title: Effect of nicardipine versus enalapril on plasma endothelin-1 in hypertensive patients with type 2 diabetes mellitus.
    Author: Iwase M, Doi Y, Goto D, Ichikawa K, Iino K, Yoshinari M, Fujishima M.
    Journal: Clin Exp Hypertens; 2000; 22(7-8):695-703. PubMed ID: 11131046.
    Abstract:
    We compared the effects of dihydropyridine type Ca channel blocker slow-release nicardipine and angiotensin converting enzyme inhibitor enalapril on plasma endothelin-1 (ET-1) levels in hypertensive type 2 diabetic patients (n=20). Nicardipine or enalapril was administered for 6 months by a crossover design. Nicardipine and enalapril comparably lowered blood pressure. Enalapril significantly reduced urinary albumin excretion in microalbuminuric patients, whereas nicardipine did not. Urinary beta2-microglobulin excretion was significantly increased during nicardipine treatment. However, both drugs significantly reduced plasma ET-1 as compared with pretreatment levels, close to that in healthy control (2.9 +/- 0.3 pg/ml in control, 4.8 +/- 0.3 pg/ml before treatment, 3.2 +/- 0.3 pg/ml during nicardipine vs before treatment p<0.05, 2.9 +/- 0.4 pg/ml during enalapril vs before treatment p<0.01). The decrease in plasma ET-1 was significantly correlated with the increase in natriuresis in normoalbuminuric patients treated with enalapril ( r= -0.82, p<0.01) but not in those treated with nicardipine. Although nicardipine and enalapril had different renal effects, both drugs equally suppressed plasma ET-1 levels in hypertensive patients with type 2 diabetes.
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