Cerebral decortication reverses the effect of amphetamine on striatal D2 dopamine binding site density.
Unilateral ablation of the cerebral cortex produces a decrease of approximately 38% in striatal D2 dopamine binding site density. Chronic d-amphetamine treatment also produces a decrease of about 22% in D2 binding site density. Paradoxically, when rats were hemidecorticated and treated chronically with d-amphetamine, the density of striatal D2 dopamine binding sites on the decorticated side was increased (by about 50%) rather than decreased. Evidently d-amphetamine-induced down-regulation of D2 dopamine binding sites depends on an intact corticostriatal pathway.
D000818:Animals; D002541:Cerebral Decortication; D003342:Corpus Striatum / Q000187:drug effects* / Q000378:metabolism; D003913:Dextroamphetamine / Q000494:pharmacology*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D011954:Receptors, Dopamine / Q000187:drug effects* / Q000378:metabolism; D017448:Receptors, Dopamine D2; D013134:Spiperone / Q000378:metabolism
D011954:Receptors, Dopamine; D017448:Receptors, Dopamine D2; D013134:Spiperone; D003913:Dextroamphetamine