in order to determine the role of dopamine ( da ) on neuropeptide y ( npy ) neurons in the arcuate nucleus of the rat hypothalamus , we evaluated the effects of alpha-methylparatyrosine ( alpha-mpt ) , an inhibitor of catecholamines biosynthesis , and haloperidol , a dopaminergic antagonist , on npy immunoreactive neurons .
C0013030
dopamine
C0282151
dopaminergic