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中国临床药理学与治疗学 ›› 2017, Vol. 22 ›› Issue (1): 37-42.

• 基础研究 • 上一篇    下一篇

硫酸化茯苓多糖对MPTP诱导的小鼠多巴胺能神经元损伤的保护作用

高贵珍1,吴 超1,薛宏宇2,王 超1   

  1. 1 宿州学院生物与食品工程学院,宿州 234000,安徽; 2 大连理工大学生命与医药学院,盘锦 124221,辽宁
  • 收稿日期:2016-07-13 修回日期:2016-12-19 出版日期:2017-01-26 发布日期:2017-01-23
  • 作者简介:高贵珍,女,本科,教授,研究方向:多糖药理性质研究。 Tel: 0557-2871037 E-mail: gaogz.usz@163.com
  • 基金资助:

    安徽省教育厅自然科学基金资助项目(KJ2013A242);国家自然科学基金资助项目(31400307);宿州学院博士启动基金项目(2014jb05)

Protective effect of sulfated pachymaran on MPTP-induced damage in mouse dopaminergic neurons

GAO Guizhen 1, WU Chao 1, XUE Hongyu 2, WANG Chao 1   

  1. 1 School of Biological and Food Engineering, Suzhou University, Suzhou 234000, Anhui, China; 2 School of Life Science and Medicine, Dalian University of Technology, Panjin 124221, Liaoning, China
  • Received:2016-07-13 Revised:2016-12-19 Online:2017-01-26 Published:2017-01-23

摘要:

目的:探讨硫酸化茯苓多糖(SP)对1-甲基-4-苯基-1,2,3,6-四氢吡啶(MPTP)诱导小鼠黑质多巴胺(DA)能神经元的保护作用。方法: ICR小鼠随机分为5组:对照组、MPTP模型组和SP治疗组(50、100、150 mg/kg),实施腹腔注射给药。爬杆行为评价各组小鼠的运动能力,酪氨酸羟化酶(TH)免疫染色法和TUNEL法检测黑质神经元的损伤与凋亡情况,紫外分光光度法检测小鼠中脑和纹状体中DA含量、纹状体中一氧化氮合酶(NOS)活性。结果: MPTP组中小鼠的爬杆时间显著延长,TH阳性细胞明显减少,TUNEL阳性细胞数量增加,中脑和纹状体中的多巴胺含量显著下降(P<0.01),纹状体中NOS活性显著上升(P<0.01)。SP治疗组中,MPTP导致的上述变化均得到改善:小鼠爬杆时间缩短,TH阳性细胞增多,TUNEL阳性细胞减少;小鼠中脑和纹状体DA含量显著上升(P<0.01),NOS活性明显下降(P<0.05)。结论:SP对MPTP诱导的帕金森小鼠黑质DA能神经元具有一定的保护作用。

关键词: 硫酸化茯苓多糖, MPTP, 细胞凋亡, 多巴胺, 一氧化氮合酶

Abstract:

AIM: To explore the protective effect of sulfated pachymaran (SP) on MPTP- induced damage in mouse substantia nigra neurons. METHODS: ICR mice were randomly divided into five groups: control group, MPTP model group and SP group (50, 100, 150 mg/kg), and all drugs were administrated to mice by abdominal injection. Pole test was performed to assess the ability of moving. TH immunostaining and TUNEL labeling were used to observe the damage and apoptosis of nigral neurons. The levels of dopamine (DA), malondialdehvde (MDA) and hydrogen peroxide (H2O2) in both midbrain and striatum were detected by UV spectrophotometry. RESULTS: Compared with the control group, the mice in MPTP model group took longer time to descend; TH-positive neurons and the level of DA in midbrain and striatum decreased obviously, and TUNEL-positive neurons increased significantly, but the level of H2O2 in midbrain and striatum did not vary significantly. Compared with the model group, SP treatment was shown to reverse all the above changes induced by MPTP. CONCLUSION: SP may have protective effects on MPTP-induced damage of dopaminergic neurons in Parkinsons' disease PD mice.

Key words: sulfated pachymaran, MPTP, apoptosis, dopamine, NOS

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