当前位置： SCI文献检索 > NEUROPHARMACOLOGY期刊下所有文献 > In vivo study of NMDA-sensitive glutamate receptor by fluorothienylcyclohexylpiperidine [correction of fluorothienylcycloexylpiperidine], a possible ligand for positron emission tomography.

In vivo study of NMDA-sensitive glutamate receptor by fluorothienylcyclohexylpiperidine [correction of fluorothienylcycloexylpiperidine], a possible ligand for positron emission tomography.

Abstract：

:As a preliminary to positron emission tomography (PET) studies of excitatory amino acid neurotransmission, N-methyl-D-aspartate (NMDA)-sensitive glutamate receptors of mice and rats were labelled in vivo with [3H]fluorothienylcyclohexylpiperidine [corrected] (FTCP), which binds to the phencyclidine site of the NMDA receptor. After intravenous injection, the half-life of clearance of authentic FTCP from blood was 4.2 min in mice, 12 min in rats and 45 min in a rhesus monkey. In rodent brain, the specific binding of [3H]FTCP, 10 min after intravenous injection, was 10-20% of the total binding and no regional differences were observed. However, if animals were treated with NMDA intraperitoneally (0.68 mmol/kg), 10 min before injection of [3H]FTCP, a three- to five-fold increase in specific binding was observed in hippocampus, cerebral cortex and striatum but not in cerebellum. Thus, specific binding of [3H]FTCP in vivo revealed the physiological status of the NMDA receptor; in fact, preliminary PET studies with [18F]FTCP in monkeys indicated increased binding after activation of NMDA receptors. These data suggest that PET with [18F]FTCP can be a tool to evaluate physiological or pathological modifications of the function of NMDA receptors.

journal_name

Neuropharmacology

journal_title

Neuropharmacology

authors

Ferrarese C,Guidotti A,Costa E,Miletich RS,Rice KC,de Costa BR,Fulham MJ,Di Chiro G

doi

10.1016/0028-3908(91)90125-u

subject

Has Abstract

pub_date

1991-08-01 00:00:00

pages

899-905

issue

8

eissn

0028-3908

issn

1873-7064

journal_volume

30

pub_type

杂志文章

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