Open AccessA Randomized, Double‐Blind Trial Comparing the Effects of Amlodipine Besylate/Benazepril HCl vs Amlodipine on Endothelial Function and Blood Pressure
Author(s) -
Mohler Emile R.,
Herrington David,
Ouyang Pamela,
Mangano Charles,
Ritter Susan,
Davis Pamela,
Purkayastha Das,
Gatlin Marjorie,
Vogel Robert A.
Publication year - 2006
Publication title -
the journal of clinical hypertension
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.909
H-Index - 67
eISSN - 1751-7176
pISSN - 1524-6175
DOI - 10.1111/j.1524-6175.2006.05690.x
Subject(s) - amlodipine , medicine , benazepril , blood pressure , vasodilation , endothelial dysfunction , urology , randomized controlled trial , cardiology , anesthesia , pharmacology
Evidence suggests that renin‐angiotensin‐aldosterone system inhibition ameliorates endothelial dysfunction. The authors examined the effect of amlodipine besylate/benazepril HCl combination treatment compared with amlodipine besylate monotherapy in modulating endothelial dysfunction. This multicenter, double‐blind, 12‐week study randomized 70 hypertensive subjects with at least one other endothelial dysfunction risk factor to amlodipine besylate/benazepril HCl (5/20 mg/d force‐titrated to 5/40 mg/d) or amlodipine besylate monotherapy (5 mg/d force‐titrated to 10 mg/d). Both the combination and monotherapy produced significant median increases from baseline in percentage flow‐mediated vasodilation (2.0% and 1.2%, respectively) and percentage change in percent flow‐mediated vasodilation (25% and 16%, respectively). These improvements were numerically larger with combination treatment, but between‐group differences did not achieve statistical significance. Reductions in systolic and diastolic blood pressure were significantly greater ( P =.0452/ P =.0297) with combination treatment (−18.6/−12.3 mm Hg) than with monotherapy (−14.8/−9.1 mm Hg). A highly positive correlation between change in systolic blood pressure and change in percent of flow‐mediated vasodilation was demonstrated only for combination treatment.