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Participation of cholinergic system in memory deficits induced by blockade of hippocampal mGlu(1) receptors.

Abstract：

:We investigated the role of hippocampal group I metabotropic glutamate receptors (mGlu(1) receptors) in the retrieval process of spatial memory using 8-arm radial maze performance with 4 arms baited. In addition, the participation of the cholinergic system in memory deficits induced by mGlu(1) receptors antagonist was studied. Intrahippocampal injection of (R,S)-1-Aminoindan-1,5-dicarboxylic acid (AIDA), a mGlu(1) receptor antagonist, significantly increased total error, reference memory error and working memory error at a dose of 20 nmol/side. Donepezil (0.5 and 1.0 mg/kg, p.o.) showed an ameliorative effect on AIDA-induced memory deficits. Improvement by donepezil of AIDA-induced memory deficits was antagonized by scopolamine (5 nmol/side) but not by mecamylamine (200 nmol/side) at a dose that did not affect performance. These findings clearly indicate that hippocampal mGlu(1) receptors play an important role in the retrieval of spatial memory. Furthermore, we found that hippocampal mGlu(1) receptors were closely associated with muscarinic receptors in memory performance.

journal_name

Eur J Pharmacol

journal_title

European journal of pharmacology

authors

Mikami A,Masuoka T,Yasuda M,Yamamoto Y,Kamei C

doi

10.1016/j.ejphar.2007.07.010

subject

Has Abstract

pub_date

2007-12-01 00:00:00

pages

82-6

issue

1-3

eissn

0014-2999

issn

1879-0712

pii

S0014-2999(07)00786-8

journal_volume

575

pub_type

杂志文章

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