[3H]ketanserin binding in human brain postmortem.

Abstract:

:This study aimed at comparing the binding characteristics of [3H]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 [3H]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 [3H]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.

journal_name

Neurochem Res

journal_title

Neurochemical research

authors

Marazziti D,Rossi A,Palego L,Giannaccini G,Naccarato A,Lucacchini A,Cassano GB

doi

10.1023/a:1027366413289

subject

Has Abstract

pub_date

1997-06-01 00:00:00

pages

753-7

issue

6

eissn

0364-3190

issn

1573-6903

journal_volume

22

pub_type

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