| Title | Hemodynamic and biochemical effects of the AT1 receptor antagonist irbesartan in hypertension |
|---|---|
| Published in | Hypertension. ISSN 0194-911x. |
| Author | Admiraal, P.J.; Janssen, J.A.M.J.L. (Joop); Kroodsma, J.M.; Ronde, de W.A. (Willem); Boomsma, F. (Frans); Sissmann, J.; Blankestijn, P.J. (Peter); Mulder, P.G.H. (Paul); Man in 't Veld, A.J. (Arie); Meiracker, van den A.H. (Anton) |
| Date | 1995-01-01 |
| Language | English |
| Type | article |
| Abstract | We studied the hemodynamic, neurohumoral, and biochemical effects of the novel angiotensin type 1 (AT1) receptor antagonist irbesartan in 86 untreated patients with essential hypertension on a normal sodium diet. According to a double-blind parallel group trial, patients were randomized to a once-daily oral dose of the AT1 receptor antagonist (1, 25, or 100 mg) or placebo after a placebo run-in period of 3 weeks. Randomization medication was given for 1 week. Compared with placebo, 24-hour ambulatory blood pressure did not change with the 1-mg dose, and it fell (mean and 95% confidence interval) by 7.0 (4.2-9.8)/6.1 (3.9-8.1) mm Hg with the 25-mg dose and by 12.1 (8.1-16.2)/7.2 (4.9-9.4) mm Hg with the 100-mg dose. Heart rate did not change during either dose. With the 25-mg dose, the antihypertensive effect was attenuated during the second half of the recording, and with the 100-mg dose, it was maintained for 24 hours. Baseline values of renin and the antihypertensive response to the 25- and 100-mg doses were well correlated (r = .68, P < .01). Renin did not change with the 1-mg dose, but it rose threefold to fourfold with the 25-mg dose and fourfold to fivefold with the 100-mg dose 4 to 6 hours after administration. With the 100-mg dose, renin was still elevated twofold 24 hours after dosing. The changes in renin induced by the AT1 receptor antagonist were associated with parallel increments in angiotensin I and angiotensin II. Aldosterone, despite AT1 receptor blockade, did not fall. |
| Publication | http://hdl.handle.net/1765/9126 |
| Persistent Identifier | urn:NBN:nl:ui:15-1765/9126 |
| Metadata | XML |
| Repository | Erasmus University Rotterdam |
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