Characterization of the Angiotensin II Receptor Antagonist TCV-116 in Healthy Volunteers

Author:

Delacrétaz Etienne1,Nussberger Jürg1,Biollaz Jerôme1,Waeber Bernard1,Brunner Hans R.1

Affiliation:

1. From the Division of Hypertension and the Division of Clinical Pharmacology (J.B.), University Hospital, Lausanne, Switzerland.

Abstract

Abstract The purpose of this study was to assess the inhibitory effect of TCV-116, an orally active angiotensin II (Ang II) antagonist, on the pressor action of exogenous Ang II and to determine the compensatory rise in plasma renin activity and Ang II levels. Twenty-three male volunteers were treated for 8 days in a double-blind fashion with either placebo or TCV-116 (1, 2, or 4 mg PO daily) and challenged on the first, fourth, and eighth days with repeated bolus injections of Ang II. An additional 4 subjects received 8 mg PO daily in a single-blind fashion. The inhibitory effect on the systolic blood pressure response to Ang II was long lasting and clearly dose related. Six hours after 4 mg TCV-116, the systolic blood pressure response to a given dose of Ang II was reduced to 40±4% and 35±8% of baseline value on days 1 and 8, respectively. TCV-116 induced a dose-related increase in plasma renin activity and Ang II levels that was more pronounced on the eighth than on the first day of drug administration. Despite this compensatory mechanism, the relation between the time-integrated systolic blood pressure response to Ang II and the time-integrated CV-11974 levels, the active metabolite of TCV-116, was not different between days 1 and 8. In conclusion, TCV-116 appears to be a well-tolerated, orally active, potent, and long-lasting antagonist of Ang II in men.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Internal Medicine

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