小剂量MK-801对大鼠参照记忆、空间工作记忆和逆反学习能力的影响

被引:5
作者
李继涛
苏允爱
杨阳
冯瑜
黄润虎
司天梅
机构
[1] 北京大学精神卫生研究所卫生部精神卫生学重点实验室
关键词
地卓西平马来酸盐; 精神分裂症; Morris水迷宫; 认知缺陷;
D O I
暂无
中图分类号
R749.3 [精神分裂症];
学科分类号
100205 ;
摘要
目的探讨腹腔注射N-甲基-D-天冬氨酸(NMDA)受体拮抗剂地卓西平马来酸盐(MK-801)对大鼠认知功能的影响。方法成年雄性SD大鼠随机分为MK-801组和对照组,分别腹腔注射小剂量生理盐水或MK-801(0.1 mg/kg)20 min后在Morris水迷宫中评定MK-801对大鼠参照记忆、空间工作记忆和逆反学习能力的影响。结果参照记忆任务中,与对照组相比MK-801组逃避潜伏期延长(P<0.05),且在目标象限的探索时间百分比[(22.7±2.9)%]与相邻象限[(24.0±0.9)%]和对立象限[(29.3±2.4)%]的差异无统计学意义(P>0.05);空间工作记忆任务中,对照组匹配试次潜伏期显著短于样本试次[(37.6±6.0)vs(61.5±6.3),P<0.05],而MK-801组两试次潜伏期差异无统计学意义[(53.8±7.8)vs(62.2±7.1),P>0.05];逆反学习任务中,与对照组相比MK-801组潜伏期明显延长(P<0.05),且在空间探索中新旧目标象限探索时间百分比差值小于对照组[(-0.01±4.7)vs(23.5±6.2),P<0.01]。结论腹腔注射小剂量MK-801破坏了大鼠的参照记忆、空间工作记忆和逆反学习,提示其在多个认知维度上可模拟精神分裂症患者的认知缺陷。
引用
收藏
页码:261 / 265
页数:5
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