白细胞介素-1β在病理性疼痛大鼠脊髓LTP中的作用及机制

被引:12
作者
钟祎 [1 ]
黄阳亮 [2 ]
许继德 [1 ]
机构
[1] 广州医学院生理教研室
[2] 中山大学附属第一医院脊柱外科
关键词
白细胞介素-1; 长时程增强; p38 MAPK; NF-κB;
D O I
暂无
中图分类号
R741 [神经病学];
学科分类号
100204 [神经病学];
摘要
目的:探讨白细胞介素-1β(interleukin-1β,IL-1β)在神经病理性疼痛大鼠脊髓背角C纤维诱发电位长时程增强(long-term potentiation,LTP)中的作用及其机制。方法:用坐骨神经部分损伤(spared nerve iniury,SNI)和腰5前根切断(lumbar 5 ventral root transection,L5 VRT)方法复制大鼠病理性疼痛模型,观察外源性IL-1β对正常大鼠及病理性疼痛模型大鼠脊髓背角C纤维诱发电位的影响,并且检测p38 MAPK(p38 mitogen-activatedprotein kinase)和NF-κB(nuclear factor-kappa B)信号通路在其中的作用。结果:500μg/L IL-1β对正常大鼠C纤维介导的基本突触传递和高频刺激诱导的LTP都没有影响,而5μg/L的IL-1β可以在神经病理性疼痛模型的大鼠上诱导出LTP。预先用p38 MAPK或NF-κB的抑制剂(SB203580或PDTC)可以完全阻断IL-1β诱导的LTP。结论:外源性IL-1β可诱导神经病理性疼痛大鼠脊髓背角C纤维诱发电位的LTP。38 MAPK和NF-κB信号通路可能参与这一过程。
引用
收藏
页码:541 / 545
页数:5
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