they did not inhibit the stimulation of hydrolysis of added phosphatidylcholine ( by phospholipase a2 ) by cyclic nucleotides , but inhibited the stimulation by noradrenaline , acetylcholine , 5-hydroxytryptamine , dopamine ( 3,4-dihydroxyphenethylamine ) and histamine .
C0020291
hydrolysis
C0031667
phospholipase a2