Pre- or post-training administration of the NMDA receptor blocker MK-801 impairs object recognition memory in rats

被引:186
作者
de Lima, MNM
Laranja, DC
Bromberg, E
Roesler, R
Schröder, N
机构
[1] Catholic Univ, PUCRS, Biosci Fac, Memory & Neurodegenerat Lab,Dept Physiol Sci, BR-90619900 Porto Alegre, RS, Brazil
[2] Catholic Univ, PUCRS, Grad Program Biomed Gerontol, IGG,Sao Lucas Hosp, BR-90619900 Porto Alegre, RS, Brazil
[3] Univ Fed Rio Grande Sul, Inst Basic Hlth Sci, Dept Pharmacol, Preclin Neuropharmacol Lab, BR-90046900 Porto Alegre, RS, Brazil
关键词
MK-801; NMDA receptor; neural plasticity; recognition memory;
D O I
10.1016/j.bbr.2004.05.016
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
The aim of the present study was to investigate the effects of NMDA receptor blockade on formation of object recognition memory. In the first experiment, adult Wistar rats were given an intraperitoneal injection of saline or the NMDA receptor antagonist [(+)-5-methyl-10,11-dihydro-5H-dibenzo-[a,d]cyclo-hepten-5,10-imine-maleate] (MK-801) (0.001, 0.01, or 0.1 mg/kg) 20 min prior to training in a novel object recognition task. In the second experiment, saline or MK-801 (0.1 mg/kg) were given immediately after training. Memory retention was tested 1.5 and 24 h after training. MK-801 impaired both short- and long-term retention of object recognition memory when given either before or after training. The results suggest that NMDA receptor activation is necessary for formation of object recognition memory. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:139 / 143
页数:5
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