实验性三叉神经痛慢性缩窄环术动物模型建立

被引:19
作者
丁丽华
于生元
机构
[1] 中国人民解放军总医院神经内科
[2] 中国人民解放军总医院神经内科 北京
[3] 北京
关键词
三叉神经痛; 动物模型; 行为学反应;
D O I
暂无
中图分类号
R-332 [医用实验动物学];
学科分类号
1001 ;
摘要
目的 :为探讨三叉神经痛的发病机制及治疗等提供实验基础 ,建立一种可靠的三叉神经痛模型。方法 :将大鼠随机分为手术组及假手术组 ,手术组用两根铬线疏松环扎大鼠的眶下神经造成慢性缩窄损伤 ,而假手术组只暴露神经 ,但不结扎 ,观察术后不同时段大鼠对机械刺激的反应阈值及相关的痛觉行为变化。结果 :手术组术后 9~ 6 0天左右 ,在眶下神经支配区域内 ,大鼠出现痛觉超敏现象 ,与手术对侧、术前及对照组比较存在显著差异 (P <0 .0 1) ,极低的外在刺激即可激发强烈的疼痛行为反应 ,持续至术后 30天 ,然后逐渐恢复 ,术后 80天左右恢复术前水平。结论 :大鼠眶下神经的慢性环扎损伤可导致三叉神经痛出现 ,压迫解除后疼痛可缓解。该模型成功地模拟了临床因压迫导致三叉神经痛的情况 ,简单易行 ,成功率高。
引用
收藏
页码:15 / 18
页数:4
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