Why are converting enzyme inhibitors vasodilators?

Abstract:

:1. The primary action of the converting enzyme inhibitors to prevent the formation of angiotensin II can explain a decrease in peripheral vascular resistance in patients with elevated, but not in those with normal or reduced plasma renin levels. 2. The inhibition of the breakdown of bradykinin will potentiate the vasodilator properties of the endogenously produced peptide. These include direct relaxation of certain vascular smooth muscle, production of vasodilator prostanoids and release of endothelium-derived relaxing factor(s). The greater release of the latter in the kidney could exert a negative feedback on the release of renin. 3. In addition, converting enzyme inhibitors may directly (by a prejunctional effect) and indirectly (by curtailing the production of angiotensin II) reduce the release of noradrenaline in the blood vessel wall. 4. Converting enzyme inhibitors may also directly reduce the responsiveness of vascular smooth muscle to vasoconstrictor stimuli (e.g. alpha-adrenoceptor activation). 5. The different effects of these therapeutic agents may concur to induce peripheral vasodilatation.

journal_name

Br J Clin Pharmacol

authors

Vanhoutte PM,Auch-Schwelk W,Biondi ML,Lorenz RR,Schini VB,Vidal MJ

doi

10.1111/j.1365-2125.1989.tb03585.x

subject

Has Abstract

pub_date

1989-01-01 00:00:00

pages

95S-103S; discussion 103S-104S

eissn

0306-5251

issn

1365-2125

journal_volume

28 Suppl 2

pub_type

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