Abstract
2-Phenylethylamine (PE) potentiates neuronal responses to dopamine by an unknown post-synaptic mechanism. Here, whether PE modifies D1-like receptor binding was examined. An unexpected effect of the monoamine oxidase inhibitor pargyline was observed, which did not involve competition for ligand binding. PE did not affect ligand binding in the presence or absence of pargyline. It is concluded that the effect of pargyline does not involve elevation of endogenous PE, and PE effects on dopaminergic neurotransmission are not due to altered D1-like receptor binding.
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