MONOAMINE VESICULAR UPTAKE SITES IN PATIENTS WITH PARKINSONS-DISEASE AND ALZHEIMERS-DISEASE, AS MEASURED BY TRITIATED DIHYDROTETRABENAZINE AUTORADIOGRAPHY

被引:28
作者
LEHERICY, S
BRANDEL, JP
HIRSCH, EC
ANGLADE, P
VILLARES, J
SCHERMAN, D
DUYCKAERTS, C
JAVOYAGID, F
AGID, Y
机构
[1] RHONE POULENC RORER,F-94403 VITRY,FRANCE
[2] HOP LA PITIE SALPETRIERE,NEUROPATHOL R ESCOUROLLE LAB,PARIS,FRANCE
关键词
HUMAN BRAIN; DOPAMINE; MONOAMINE; CAUDATE NUCLEUS; PUTAMEN; VENTRAL STRIATUM; STRIOSOME; MATRIX;
D O I
10.1016/0006-8993(94)90856-7
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The monoaminergic innervation of the caudate nucleus, putamen and ventral striatum was investigated post mortem, in patients with Parkinson's and Alzheimer's disease as compared to control subjects, by autoradiographic detection of tritiated dihydrotetrabenazine (H-3-TBZOH), a specific high affinity ligand of the vesicular monoamine transporter. The binding of H-3-TBZOH was specific and saturable (K-d 5.3 nM). In control striatum, the pattern of distribution of H-3-TBZOH binding was heterogeneous, with higher binding levels in the 'matrix' than in the 'striosome' compartment. Changes in ligand binding levels were observed in the pathological brains compared to controls. In Parkinson's disease (PD), characterized by a severe damage of mesostriatal dopaminergic neurons, the density of H-3-TBZOH binding was reduced. A severe decrease in H-3-TBZOH binding was observed in all parts of the striatum (caudate nucleus: -80%, putamen: -86%, ventral striatum: -94%) in PD brains. The data corroborate the deficiency in striatal dopaminergic transmission and suggest that in PD brains dopaminergic terminals have disappeared and/or no longer contain synaptic vesicles. In Alzheimer's disease (AD),H-3-TBZOH binding was significantly reduced by 57% in the ventral striatum and not in the caudate nucleus and putamen. The specific decrease of monoaminergic transporter levels in the ventral striatum confirm that this nucleus is a target area in AD.
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页码:1 / 9
页数:9
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