Influence of chronic epilepsy on spatial memory retrieval in rats.
- Author:
Li-san ZHANG
1
;
Chu-lei JIN
;
Qing LI
;
Yong-cheng SUN
;
Zhong CHEN
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Benzazepines; therapeutic use; Chronic Disease; Dose-Response Relationship, Drug; Epilepsy; psychology; Male; Maze Learning; Memory Disorders; drug therapy; etiology; Pentylenetetrazole; Rats; Rats, Sprague-Dawley
- From: Journal of Zhejiang University. Medical sciences 2004;33(3):205-208
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the influence of chronic epilepsy on spatial memory retrieval in rats, and to evaluate the effects of TAK-147, an acetylcholinesterase inhibitor, and histidine, the precursor of histamine, on the amnesia induced by epilepsy.
METHODSAfter successfully trained in the 8-arm (4-arm baited) radial maze, the rats were ip injected with a subconvulsive dose of pentylenetetrazole (PTZ) every 48 h until fully kindled. Memory retrieval was tested at the same maze.
RESULTImpairment of memory retrieval was in a steady state 1 to 18 days after fully kindled, the ability of memory retrieval returned to the control level 31 days after fully kindled. TAK-147 showed an ameliorating effect on memory impairment induced by epilepsy, including reference and working memory in a dose-dependent manner. Histidine only ameliorated reference but not working memory.
CONCLUSIONPTZ-kindled seizure impair spatial memory retrieval, which it might be due to a decrease of brain acetylcholine and histamine induced by epilepsy.
