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|本期目录/Table of Contents|

P2X3在偏头痛大鼠中脑的表达及正天丸作用机制研究*(PDF)

《云南中医学院学报》[ISSN:1000-2723/CN:53-1048/R]

期数:
2019年04期
页码:
21-25
栏目:
实验研究
出版日期:
2020-05-18

文章信息/Info

Title:
Effect of Zhengtian Pills on P2X3 Receptor Expression in Midbrain of Migraine Rat Model
文章编号:
1000 - 2723(2019)04- 0021 - 05
作者:
白方会1李 慧2徐 茜3贾东佩1郭力硕1郭 跃1陈宝田4张保朝1△
(1. 南阳市中心医院,河南 南阳 473000;2. 广州市红十字会医院,广东 广州 510220;3. 南阳师范学院,河南 南阳 473000;4. 南方医科大学,广东 广州 510515)
Author(s):
BAI Fanghui1LI Hui2XU Qian3JIA Dongpei1GUO Lishuo1GUO Yue1CHEN Baotian4ZHANG Baochao1
(1. Nanyang Central Hospital, Nanyang 473000, China; 2. Guangzhou Red Cross Hospital, Guangzhou 510220, China; 3. Nanyang Normal University, Nanyang, 473000, China; 4. Southern Medical University, Guangzhou 510515, China)
关键词:
偏头痛中脑P2X3正天丸
Keywords:
Zhengtian Pills P2X3 receptors migraine midbrain
分类号:
R285.5
DOI:
10.19288/j.cnki.issn.1000-2723.2019.04.004
文献标识码:
A
摘要:
目的探究正天丸对偏头痛大鼠中脑P2X3受体表达的影响。 方法 24只SD雄性大鼠随机分为空白组、偏头痛组、正天丸组,每组8只。连续给药7 d后硝酸甘油皮下注射造模。观察各组大鼠行为学及痛觉阈值变化,免疫荧光和免疫蛋白印迹技术测各组大鼠中脑内P2X3受体的表达。结果 正天丸组耳红和挠头持续时间均较偏头痛组缩短(P<0.001)。造模后偏头痛组疼痛阈值较造模前及同期空白组均明显下降(P<0.05);正天丸组造模后1.5 h与空白组相比差异无统计学意义。偏头痛组P2X3受体在中脑内多数神经核团均呈明显高表达状态,正天丸组表达强度较偏头痛组降低。偏头痛组和正天丸组P2X3蛋白表达较空白组升高(P<0.001);正天丸组P2X3蛋白表达较偏头痛组降低(P<0.001)。结论 中脑内P2X3受体的活化介导了偏头痛的痛觉信息传递,正天丸的抗偏头痛作用与其抑制中脑内P2X3受体过表达有关。
Abstract:
Objective To investigate the effect of Zhengtian pills on P2X3 receptor expression in midbrain of rat model of migraine. Methods The Sprague-Dawle(SD) male rats were randomly divided into control group, migraine group and Zhengtian pills group, with 8 rats in each group. Rats of Zhengtian pills(ZTP) group were given 1.62 g/kg Zhengtian pills by gavage. Rats of control group and model group were given 1 mL 0.9% sodium chloride solution by gavage. The drug administration lasted for 7 days. In migraine group and ZTP group, migraine rat models were established by subcutaneous injection of nitroglycerin(NTC) (10 mg/kg) after 30 min of the last drug administration. Rats of control group were given 0.5 mL 0.9% sodium chloride solution by subcutaneous injection. Behavioural performances of the rats were observed, including the duration of ears pink and scratching head. Von-Frey hair was used to monitor the pain threshold of allodynia around whisker pad. Immunofluorescence and western blot were used to detect the expression of P2X3 receptors in midbrain of rats. Results Rats of migraine group and ZTP group were not significantly different in the appearing time of red ear and the beginning time of scratching head. ZTP group had earlier disappearing time of red ear and earlier ending time of scratching head than migraine group(P<0.001). After modeling, the pain threshold at each time point in the migraine group was significantly lower than that before modeling and the control group at the same time(P<0.05). The pain threshold of ZTP group decreased at 0.5 h after modeling(P<0.05), then it continued to rise. There was no statistical difference between ZTP group and control group at 1.5 h after modeling. Immunofluorescence results showed that the expression of P2X3 receptors in midbrain was positive in the rats of each group, mainly distributed in the nerve nuclei of periaqueductal gray (PAG), and the expression intencity of P2X3 receptors in migraine group was higher than control group and ZTP group. The protein positive levels of P2X3 receptors of migraine group and ZTP group were higher than control group (P<0.001), while the expression level of P2X3 receptor of ZTP group was lower than migraine group (P<0.001). Conclusion The effect of Zhengtian pills on the treatment of migraine may be related to its inhibition on the expression of P2X3 receptors in midbrain.

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备注/Memo

备注/Memo:
收稿日期: 2019 - 08- 02
* 基金项目: 国家自然科学基金资助项目(81774239);河南省科技攻关项目(192102310436 );河南省中医药科研专项课 题(2018ZY3052);南阳市科技攻关项目(2017JCQY008);北京医卫健康公益基金项目(YWJKJJHKYJJ-B17814)
第一作者简介: 白方会(1986-),女,主治医师,研究方向:脑病的中西医结合治疗。
△通信作者: 张保朝,E-mail:74726005@qq.com
更新日期/Last Update: 2020-06-04