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The Pharmaceutical Society of Korea (대한약학회)
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Impairments of Learning and Memory Following Intracerebroventricular Administration of AF64A in Rats

  • Lim, Dong-Koo (College of Pharmacy and the Institute for Drug Development, Chonnam National University) ;
  • Oh, Youm-Hee (College of Pharmacy and the Institute for Drug Development, Chonnam National University) ;
  • Kim, Han-Soo (College of Pharmacy and the Institute for Drug Development, Chonnam National University)
  • Published : 2001.06.01
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Abstract

Three types of learning and memory tests (Morris water maze, active and passive avoidance) were performed in rats following intracerebroventricular infusion of ethylcholine aziridium (AF64A). In Morris water maze, AF64A-treated rats showed the delayed latencies to find the platform iron 6th day after the infusion. In pretrained rats, AF64A caused the significant delay of latency at 7th days but not 8th day. In the active avoidance for the pretrained rats, the escape latency was significantly delayed in AF64A-treatment. The percentages of avoidance in AF64A-treated rats were less increased than those in the control. Especially, the percentage of no response in the AF64A-treated rats was markedly increased in the first half trials. In the passive avoidance, AF64A-treated rats shortened the latency 1.5 h after the electronic shock, but not 24 h. AF64A also caused the pretrained rats to shorten the latency 7th day after the infusion, but not 8th day. These results indicate that AF64A might impair the learning and memory. However, these results indicate that the disturbed memory by AF64A might rapidly recover after the first retrain. Furthermore, these results suggest that AF64A may be a useful agent for the animal model of learning for Spatial cognition .

Keywords

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