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EnglishThis study aimed at comparing the binding characteristics of [H-3]ketanserin, a high-affinity serotonin 2A (5-HT2A) receptor antagonist, in the prefrontal cortex, hippocampus and striatum of human brain post-mortem. The results indicated the presence of a single population of binding sites in all the regions investigated, with no statistical difference in maximum binding capacity (B-max) or dissociation constant (K-d) values. The pharmacological profile of [H-3]ketanserin binding was consistent with the labeling of the 5-HT2A receptor, since it revealed a competing drug potency ranking of ketanserin = spiperone > clozapine = haloperidol > methysergide > mesulergine > 5-HT. In conclusion, the 5-HT2A receptor, as labeled by [H-3]ketanserin, would seem to consist of a homogenous population of binding sites and to be equally distributed in human prefronto-cortical, limbic and extrapyramidal structures.
| Autori interni: | |
| Autori: | Marazziti D; Rossi A; Palego L; Giannaccini G; Naccarato A; Lucacchini A; Cassano GB |
| Titolo: | [H-3]ketanserin binding in human brain postmortem |
| Anno del prodotto: | 1997 |
| Digital Object Identifier (DOI): | 10.1023/A:1027366413289 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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