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Medline ® Abstract for Reference 8

of 'Chronic thromboembolic pulmonary hypertension: Medical treatment'

Single-dose pharmacokinetics, pharmacodynamics, tolerability, and safety of the soluble guanylate cyclase stimulator BAY 63-2521: an ascending-dose study in healthy male volunteers.
Frey R, Mück W, Unger S, Artmeier-Brandt U, Weimann G, Wensing G
J Clin Pharmacol. 2008 Aug;48(8):926-34. Epub 2008 Jun 2.
The aim of the study was to assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of BAY 63-2521, a new drug in development for pulmonary hypertension. Fifty-eight healthy male volunteers received a single oral dose of BAY 63-2521 (0.25-5 mg) or placebo. No serious adverse events were reported; there were no life-threatening events. Heart rate over 1 minute, an indicator of the effect of a vasodilating agent on the cardiovascular system in healthy subjects, was increased dose dependently versus placebo at BAY 63-2521 doses of 1 to 5 mg (P<.01). Mean arterial and diastolic pressures were decreased versus placebo at doses of 1 mg (P<.05) and 5 mg (P<.01). Systolic pressure was not significantly affected. BAY 63-2521 was readily absorbed and exhibited dose-proportional pharmacokinetics. The pharmacodynamic and pharmacokinetic properties of BAY 63-2521 suggest that it can offer a unique mode of action in the treatment of pulmonary hypertension.
Clinical Pharmacology, Bayer HealthCare AG, Pharma Research Centre, Aprather Weg 18a, 42096 Wuppertal, Germany. reiner.frey@bayerhealthcare.com