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  • Title: Increase in vasoactive intestinal polypeptides (VIP) by the angiotensin converting enzyme (ACE) inhibitor lisinopril in congestive heart failure. Relation to haemodynamic and hormonal changes.
    Author: Woie L, Dickstein K, Kaada B.
    Journal: Gen Pharmacol; 1987; 18(6):577-87. PubMed ID: 2822521.
    Abstract:
    1. The effects of the angiotensin-converting enzyme (ACE) inhibitor lisinopril on plasma vasoactive intestinal polypeptides (VIP) and plasma noradrenaline, adrenaline and dopamine were studied in 12 patients with congestive heart failure over two consecutive 48-hr periods. The first day in each period served as a treatment day and the second as a control day. 2. A parallel monitoring was made of various hormonal parameters related to the renin-angiotensin-aldosterone system, and a right-heart catheter was used to monitor haemodynamics at rest. 3. Potent inhibition of the renin-system (as demonstrated by decreases in angiotensin converting enzyme (ACE) activity, angiotensin II and plasma aldosterone) together with improved haemodynamics (decreases in mean right atrial pressure, mean pulmonary arterial pressure, mean pulmonary capillary wedge pressure and mean systemic arterial pressure) were recorded. 4. Plasma VIP was significantly increased by a mean of 20.3% (P less than 0.01) on the lisinopril treatment days compared with the control days, whereas circulating catecholamines showed no significant pattern of change. 5. It is postulated that the potent vasodilatory neuromodulator VIP is implicated in the ACE inhibitor effects. 6. The ACE is a non-specific peptidase that previously has been implicated in the potentiation of other vasoactive endogenous systems (kinins and enkephalins).
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