Hippocampal 5-hydroxytryptamine receptors: abnormalities in postmortem brain from schizophrenic subjects.

Abstract:

:There is strong evidence that hippocampal 5-hydroxytryptamine (5-HT) systems are affected in schizophrenia and hence we have studied a number of markers of the 5-HT system in hippocampi from subjects with schizophrenia. Using in situ radioligand binding with autoradiography we measured [(3)H]proplyamino-8-hydroxy-1,2,3,4-tetrahydronapthalene, [(3)H]ketanserin and [(3)H]sumatriptan binding in hippocampi from 20 schizophrenic and 20 control subjects. There were significant decreases in the density of [(3)H]ketanserin binding to the 5-HT(2A) receptor (5-HT(2A)R) in the Cornu Ammonis (CA) 3 (p=0.006), CA 1 (stratum radiatum p=0.02; pyramidal layer p=0.0008) and subiculum (pyramidal layer p=0.0004), as well as methiothepin-insensitive [(3)H]sumatriptan binding to the 5-HT(1F)R in the CA 1 (p=0.016), stratum radiatum/lacunosum moleculare (p=0.04) and subiculum (p=0.015) from subjects with schizophrenia. There were no differences in the densities of 5-HT(1A)R, 5-HT(1D)R or 5-HT(4)R in hippocampi from subjects with schizophrenia. These data support the hypothesis that regionally specific reductions in the density of the 5-HT(2A)R and 5-HT(1F)R are a component of the pathological processes underlying schizophrenia.

journal_name

Schizophr Res

journal_title

Schizophrenia research

authors

Scarr E,Pavey G,Copolov D,Dean B

doi

10.1016/j.schres.2004.02.007

subject

Has Abstract

pub_date

2004-12-01 00:00:00

pages

383-92

issue

2-3

eissn

0920-9964

issn

1573-2509

pii

S0920996404000593

journal_volume

71

pub_type

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