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Clin Exp Hypertens A. 1987;9(2-3):417-26.

Tissue converting enzyme inhibition and cardiovascular effects of converting enzyme inhibitors.


Local renin-angiotensin systems have been described in organ controlling cardiovascular function. Following oral administration of converting enzyme (CE) inhibitors the enzyme was inhibited not only in lung vascular endothelium and blood, but also in the heart, kidney, vascular wall, brain and other organs. Evidence for a contribution of tissue CE inhibition to the cardiovascular actions of CE inhibitors is provided by the antihypertensive effect of brain CE inhibition in spontaneously hypertensive rats, by the concomitant persistence of blood pressure decrease and CE inhibition in vascular wall and kidney after chronic oral CE inhibitor treatment, and by the marked effects of oral CE inhibitor pretreatment on cardiac function in isolated rat hearts. Local inhibition of tissue renin-angiotensin systems may therefore be an important factor involved in the beneficial effects of CE inhibitors in cardiovascular diseases such as arterial hypertension, congestive heart failure, and cardiac arrhythmias.

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