The effects of lisuride and some other dopaminergic agonists on receptor binding in human brain

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Abstract
The effect of lisuride, bromocriptine, CQ 32-084 and CU 32-085 on the specific binding of radiolabelled spiperone to homogenates of human putamen taken post-mortem has been investigated. In addition, the binding of3H-lisuride to such preparations has been studied. Lisuride is found to inhibit spiperone binding to the dopamine receptor at very low concentrations and to bind to theβ-adrenergic receptor at somewhat higher levels. Lisuride binding to the dopamine receptor was found to be antagonist-like. A measure of thein vivo effect of lisuride was obtained from investigations of brain tissue taken from a patient treated with the drug before death.