From: Selective phosphodiesterase type 5 inhibition improves responsiveness to inhaled nitric oxide in endotoxin-challenged rats
NO 4 ppm
NO 10 ppm
Decrease of PAP (mmHg)
-0.7 ± 0.1 (n = 6)
-1.0 ± 0.1- (n = 6)
Zaprinast (50 µg)
-1.9 ± 1.8* (n = 14)
-2.9 ± 1.3* (n = 4)
Sildenafil (10 ng)
-1.8 ± 1.1* (n = 6)
-2.4 ± 0.5* (n = 5)