Influence of benzodiazepine binding site ligands on fear-conditioned contextual memory.

Abstract:

:Eight compounds that bind to the benzodiazepine binding site on the gamma-amino butyric acid(A) (GABA(A)) receptor were assessed for their influence on contextual memory, an aspect of memory affected in various cognitive disorders including Alzheimer's disease. Using a Pavlovian fear-conditioning paradigm, each ligand was evaluated in C57Bl/6 mice in regards to its direct affect on contextual memory and whether the ligand could attenuate scopolamine-induced contextual memory impairment. Of the eight ligands tested, one impaired contextual memory (agonist), six attenuated scopolamine-induced contextual memory impairment (inverse agonists), and one antagonized the ability of an inverse agonist to attenuate scopolamine-induced contextual memory impairment. Hence, further demonstrating the bi-directional influence benzodiazepine binding site ligands are able to exert on memory modulation. This study serves as an initial starting point in the development of pharmacological tools to be used in deciphering how GABA(A) receptors influence contextual memory.

journal_name

Eur J Pharmacol

authors

DeLorey TM,Lin RC,McBrady B,He X,Cook JM,Lameh J,Loew GH

doi

10.1016/s0014-2999(01)01199-2

keywords:

subject

Has Abstract

pub_date

2001-08-24 00:00:00

pages

45-54

issue

1-2

eissn

0014-2999

issn

1879-0712

pii

S0014-2999(01)01199-2

journal_volume

426

pub_type

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