促炎因子脂多糖在脊髓痛记忆中的作用机制

来源 :中国神经科学学会第九届全国学术会议暨第五届会员代表大会 | 被引量 : 0次 | 上传用户:hanfenng
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  目的 探讨环氧合酶-2在脂多糖(LPS)诱导的大鼠脊髓背角C-纤维诱发电位长时程增强(LTP)中的作用。方法 细胞外记录技术在脊髓腰膨大部记录背角浅层神经元C-纤维诱发电位。结果 (1)腹腔注射LPS后4h,强直电刺激诱导的脊髓背角LTP显著增强。(2)腹腔注射LPS后12 h或24 h,强直电刺激诱导的脊髓背角LTP与溶剂对照组比无显著差异。(3)腹腔先注射环氧合酶-2特异性抑制剂NS398,然后注射LPS 4 h后记录fEPSP,发现NS398可翻转LPS诱导的脊髓背角LTP显著增强。结论 脊髓背角环氧合酶-2的激活参与急性给予LPS诱导的脊髓LTP的增强。
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