Alleviation of schizophrenic symptoms by phenothiazines and
butyrophenones is associated with blockade of dopamine receptors, while
exacerbation of symptoms by amphetamines appears to result from enhanced
synaptic activity of dopamine and/or norepinephrine. The author suggests
that biochemical labeling of the dopamine receptor with 3H-dopamine and
3H-haloperidol may clarify mechanisms of drug effects on the dopamine
receptor.Abstract Teaser