The effects of cholecystokinin on dopaminergic mechanisms in rat striatum.
Intraventricular administration of cholecystokinin-octapeptide in unanesthetized rats results in a significant reduction in the number of [3H]spiperone binding sites. Striatal levels of the dopamine metabolites 3,4-dihydroxyphenylacetic acid and homovanillic acid were significantly reduced, whereas there was no significant reduction in the levels of the serotonin metabolite 5-hydroxyindoleacetic acid.
D000818:Animals; D003342:Corpus Striatum / Q000187:drug effects*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D011954:Receptors, Dopamine / Q000187:drug effects*; D017448:Receptors, Dopamine D2; D012844:Sincalide / Q000494:pharmacology*; D013134:Spiperone / Q000378:metabolism
D011954:Receptors, Dopamine; D017448:Receptors, Dopamine D2; D013134:Spiperone; D012844:Sincalide