Dopamine antagonist haloperidol decreases substance P, substance K, and preprotachykinin mRNAs in rat striatonigral neurons.

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Dopamine antagonist haloperidol decreases substance P, substance K, and preprotachykinin mRNAs in rat striatonigral neurons.

Rat genomic clones were used to quantitate preprotachykinin mRNAs in the rat basal ganglia, while the tachykinin peptide products substance P and substance K were measured by radioimmunoassay. Administration of the dopamine antagonist (antipsychotic) drug haloperidol significantly decreased substance P, substance K, and both alpha (substance P encoding) and beta (substance P/substance K encodin...

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Dopamine receptor subtypes colocalize in rat striatonigral neurons.

Dopaminergic neurons of the substantia nigra provide one of the major neuromodulatory inputs to the neostriatum. Recent in situ hybridization experiments have suggested that postsynaptic dopamine receptors are segregated in striatonigral and striatopallidal neurons. We have tested this hypothesis in acutely isolated, retrogradely labeled striatonigral neurons by examining the neuromodulatory ef...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 1986

ISSN: 0021-9258

DOI: 10.1016/s0021-9258(19)62663-3