permeability of endothelial monolayers decreased significantly in the presence of the stable prostacyclin analogue iloprost ( 6 nm ) , dibutyryl adenosine 3',5'-cyclic monophosphate ( camp , 0.5 mm ) -3-isobutyl-1-methylxanthine ( ibmx , 0.1 mm ) , 8-bromo camp ( 0.5 mm ) -ibmx , dibutyryl camp-theophylline ( 0.5 mm ) , or ibmx .
C0039771
theophylline
C0000096
ibmx