中华眼镜蛇心脏毒素对疼痛及记忆的影响

被引:2
作者
刘华清
李荣秀
肖齐士
刘浩然
翁恩琪
王霆
机构
[1] 华东师范大学环境科学与技术系
[2] 中科院上海生物工程研究中心
[3] 威尔曼国际新药开发中心 上海
[4] 上海
[5] 广州
关键词
眼镜蛇心脏毒素; 小鼠; 镇痛; 学习记忆;
D O I
暂无
中图分类号
R99 [毒物学(毒理学)];
学科分类号
100405 ;
摘要
通过热板法及醋酸扭体法观察中华眼镜蛇心脏毒素(CTX)对成年昆明种小鼠疼痛的影响,通过Y-型电迷宫及穿梭箱法研究CTX对东莨菪碱诱发成年昆明种小鼠学习记忆障碍的影响,利用跳台法研究CTX对东莨菪碱诱发成年BABL/C小鼠学习记忆障碍的影响,利用Morris水迷宫法研究CTX对对东莨菪碱诱发成年C57BL/6J小鼠学习记忆障碍的影响。实验发现,CTX能明显增加热刺激引起的疼痛阈值,明显减少醋酸引起的扭体次数,并能显著增加小鼠在Y型迷宫实验中的正确反应次数,减少在穿梭箱实验中小鼠重新训练至学会标准的训练次数及小鼠的反应时间,能增加小鼠在跳台法中的潜伏期,减少错误反应次数,减少小鼠在Morris水迷宫实验中的寻台时间和游泳路程,以上效果均表现出明显的剂量依赖性。以上结果提示,CTX有良好的镇痛作用以及对东莨菪碱诱发的小鼠学习记忆障碍的改善作用,这可能是由于CTX与眼镜蛇神经毒素(NT)三维结构相似而导致了相似的生物学效应。
引用
收藏
页码:73 / 78
页数:6
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