摘要
目的:观察正天丸对硝酸甘油致偏头痛模型大鼠三叉神经颈髓复合体c-fos、细胞外调节蛋白激酶(ERK)表达的影响。方法:将30只雄性SD大鼠按照随机数字表法分为空白组、模型组和治疗组。治疗组根据体表换算预防性给予正天丸灌胃,模型组和空白组给予相同剂量的生理盐水灌胃,连续7 d。模型组和治疗组采用皮下注射NTG致大鼠偏头痛模型,空白组给予生理盐水皮下注射。观察各组大鼠耳红时间、持续挠头时间和爬笼次数,采用免疫荧光法和蛋白质印迹法检测各组大鼠三叉神经颈髓复合体中c-fos、ERK表达水平。结果:与模型组相比,治疗组耳红持续时间、持续挠头时间和爬笼次数均明显减少。c-fos和ERK在硝酸甘油诱发的偏头痛大鼠的三叉神经颈髓复合体有较高的表达。与空白组比较,模型组大鼠三叉神经颈髓复合体中ERK表达水平明显升高(P<0.05);治疗组大鼠ERK表达明显低于模型组(P<0.05)。结论:正天丸可通过抑制偏头痛模型大鼠三叉神经颈髓复合体中c-fos、ERK的表达发挥降低偏头痛疼痛的作用。
引文
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