inhibition of dopamine synthesis by dl alpha-methyltyrosine methyl ester hci or the selective degeneration of nigrostriatal dopaminergic terminals by the neurotoxin 6-hydroxydopamine hbr prevented the acetylcholine increasing effect of sch 23390 completely , suggesting that presynaptic dopamine is important in the action of the dopaminergic antagonist .
C0013030
dopamine
C0282151
dopaminergic