江剑平;张科;曾赟鋆;

• 1:福建师范大学生命科学学院福建省发育和神经生物学重点实验室

摘要(Abstract)：

通过观察完全弗氏佐剂(complete Freund's adjuvant,CFA)炎症痛大鼠对伤害性热刺激的缩足反射潜伏期(paw withdrawal latency,PWL)变化,探讨Gi蛋白是否介导MrgC受体(Mas-related gene C receptors,MrgC)对炎症痛的抗痛觉过敏作用.结果显示,椎管内给予MrgC受体激动剂BAM8-22(bovine adrenal medulla 8-22,BAM8-22)能明显延长CFA炎症鼠在24 h和48 h时的缩足反射潜伏期基础值,并显著增强24h时的抗伤害作用.椎管内预先给予百日咳毒素(pertussis toxin,PTX)能抑制Gi蛋白的功能.在给予PTX7 d后,初次给予BAM8-22并不能延长CFA炎症鼠24 h时的缩足潜伏期基础值,但在24 h时再次注射BAM8-22时,能显著增强其抗伤害作用和48 h时的缩足潜伏期基础值.以上结果说明在CFA炎症痛模型中,预先给予PTX能抑制BAM8-22的抗痛觉过敏作用,但重复再次给予BAM8-22能恢复Gi蛋白的功能.表明Gi蛋白及其相关信号通路介导MrgC受体在炎症痛中的抗痛觉过敏作用.

关键词(KeyWords)： MrgC受体;Gi蛋白;抗痛觉过敏;完全弗氏佐剂炎症痛;缩足潜伏期

Abstract:

Keywords:

基金项目(Foundation): 福建省自然科学基金资助项目(2014J01305);; 福建省教育厅重点项目(JA14072)

作者(Authors): 江剑平;张科;曾赟鋆;

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