Amine-responsive adenylate cyclase activity from brain: comparisons between rat and rhesus monkey and demonstration of dopamine-stimulated adenylate cyclase in monkey neocortex.
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Abstract
The effects of biogenic amines on adenylate cyclase from rhesus monkey brain have been surveyed. Dopamine-responsive cyclase activity was found throughout the subcortical limbic area and limbic cortex, as well as in the sensorimotor cortex, where stimulation by dopamine was blocked by fluphenazine. Cyclase activity from caudate nucleus in rat and rhesus monkey was very similar in relative responsiveness to stimulation by dopamine and norepinephrine. Some response of the enzyme from cingulate and sensorimotor cortex to isoproterenol was observed. The inhibition by fluphenazine of dopamine-responsive cyclase activity from sensorimotor cortex raises the possibility of a cerebrocortical locus of action for antipsychotic agents.
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