实用医学杂志 ›› 2021, Vol. 37 ›› Issue (6): 746-750.doi: 10.3969/j.issn.1006⁃5725.2021.06.011

• 基础研究 • 上一篇    下一篇

5⁃HT7受体在三叉神经节电刺激引起的硬脑膜血浆蛋白外渗中的作用

王小娟, 梁鉴波
  

  1.  1 广州市第一人民医院,华南理工大学附属第二医院神经内科(广州 510180);2 中山大学附属第一医院检验科(广州 510080)

  • 出版日期:2021-03-25 发布日期:2021-03-25
  • 通讯作者: 王小娟 E⁃mail:eywxj@scut.edu.cn
  • 基金资助:

    广东省自然科学基金项目(编号:2017A030313450); 广州市卫生和计划生育科技项目(编号:20181A011012)

The role of 5⁃HT7 receptors in dural plasma protein extravasation induced by electrical stimulation of the trigeminal ganglion

WANG Xiaojuan,LIANG Jianbo   

  1. Department of Neurology,Guangzhou First People′s Hos⁃ pital,the Second Affiliated Hospital,South China University of Technology,Guangzhou 510180,China

  • Online:2021-03-25 Published:2021-03-25
  • Contact: WANG Xiaojuan E⁃mail:eywxj@scut.edu.cn

摘要:

目的 探讨5⁃HT7 受体在三叉神经节电刺激引起的硬脑膜血浆蛋白外渗(plasma protein extravasation,PPE)中的作用。方法 建立三叉神经节电刺激偏头痛大鼠模型,35 只大鼠随机分为 7 组:舒马曲坦(5⁃HT1B/1D受体激动剂)阳性对照组、AS19(5⁃HT7受体激动剂)5 mg/kg 10 mg/kg 组、SB269970(5⁃HT7受体拮抗剂)5 mg/kg 10 mg/kg 组、二甲基亚砜及生理盐水阴性对照组。电刺激前 30 min 给药,刺激前 5 min 注射 2%伊文思蓝用于标记硬脑膜 PPE,用荧光显微镜拍摄并用灰度分析软件对 PPE 做定量分 析,刺激侧与对侧荧光灰度值之比值为 PPE 率。结果 舒马曲坦组 PPE 率较其他组明显降低(P < 0.005); AS19、SB269970组PPE率与阴性对照组相比差异均无统计学意义(P > 0.05)。结论 5⁃HT7受体可能未参与 三叉神经血管系统激活引起的硬脑膜PPE。

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Abstract:

Objective To investigate the role of 5 ⁃ HT7 receptors in dural plasma protein extravasation (PPE)induced by electrical stimulation of the trigeminal ganglion. Methods To construct migrainous rat model by means of electrical stimulation of the trigeminal ganglion. A total of 35 rats were randomly divided into 7 groups sumatriptan(5⁃HT1B/1D receptor agonist )positive control group,AS19(5⁃HT7 receptor agonist)5 and 10 mg/kg groups,SB269970(5⁃HT7 receptor antagonist)5 and 10 mg/kg groups,dimethyl sulfoxide and normal saline negative control groups. All drugs were administered 30 minutes before electrical stimulation. 2% Evans blue dye was injected intravenously as a marker of PPE 5 minutes before electrical stimulation. The assessment of PPE was measured using a fluorescence microscope equipped with a grating monochromator and a spectrophotometer. The ratio of the fluorescence intensity from the stimulated compared to the contralateral side was expressed as the PPE ratio. Results The PPE ratio of sumatriptan group was significantly lower than other groups(P < 0.005). No significant differencewas discovered among AS19,SB269970 and negative control groups(P > 0.05). Conclusions 5⁃HT7 receptors might not be involved in dural PPE induced by activation of the trigeminovascular system.

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