J4 ›› 2012, Vol. 38 ›› Issue (6): 1124-1128.

• 基础研究 • 上一篇    下一篇

罗格列酮对帕金森病模型小鼠中脑黑质iNOS和IL-6表达的抑制作用及其意义

张 田1, 魏子峰2,秦丽娟1,周洪霞2,张宇新2
   

  1. 1.河北联合大学基础医学院生理学教研室|河北 唐山 063000;2.河北联合大学基础医学院解剖学教研室|河北 唐山 063000
  • 收稿日期:2012-05-20 发布日期:2012-11-28
  • 通讯作者: 张宇新(Tel: 0315-3726421,E-mail: jpzyx@163.com) E-mail:jpzyx@163.com
  • 作者简介:张 田(1979-)|女|河北省唐山市人|讲师|医学硕士|主要从事帕金森病病因与发病机制的研究。 
  • 基金资助:

    河北省科技厅自然科学基金资助课题(C2004000689);河北省博士基金资助课题(05547008D-4);河北省科学技术与社会发展计划项目资助课题(04276135);河北省唐山市科学技术研究与发展计划项目资助课题(10140201A-15)

Inhibitory effects of rosiglitazone on |expressions of iNOS and IL-6 in substantia nigra of mice with Parkinson’s disease and their significances

ZHANG Tian1|WEI Zi-feng2|QIN Li-juan1|ZHOU Hong-xia2|ZHANG Yu-xin2   

  1. 1.Department of Physiology,School of Basic Medical Sciences,Hebei United University,Tangshan 063000,China;[JP]2.Department of Anatomy,School of Basic |Medical Science,Hebei United University,Tangshan 063000,China
  • Received:2012-05-20 Published:2012-11-28

摘要:

目的:探讨罗格列酮对帕金森病(PD)模型小鼠中脑黑质中诱导型一氧化氮合酶(iNOS) 和白细胞介素-6(IL-6)的调控作用,并阐明其机制。方法:45只雄性小鼠随机分为对照组、模型组和罗格列酮处理组,每组15只。采用爬杆实验法观察各组小鼠行为学变化;采用免疫组织化学染色和Western blotting法观察小鼠中脑黑质酪氨酸羟化酶(TH)、iNOS和 IL-6的表达。结果:模型组小鼠出现震颤、步态迟缓等PD 样症状;小鼠转身(T-turn)及爬杆时间(T-LA)较对照组显著延长(P<0.05);黑质区TH阳性神经元缺失,炎症因子iNOS和IL-6阳性细胞明显增多,蛋白表达水平高于对照组(P<0.05);罗格列酮处理组小鼠PD样症状较模型组减轻,T-turn和T-LA少于模型组(P<0.05),iNOS、IL-6和TH阳性细胞数及蛋白表达水平与模型组比较差异有统计学意义(P<0.05)。结论:罗格列酮可能通过抑制炎症因子iNOS和IL-6表达,对多巴胺能神经元起到保护作用。

关键词:  帕金森病;酪氨酸羟化酶;诱导型一氧化氮合酶;白细胞介素-6;罗格列酮

Abstract:

Objective To investigate the regulation of rosiglitazone on iNOS and IL-6 in substantia nigra of the mice with Parkinson’s disease(PD),and to clarify the mechanism. Methods 45 male mice were randomly divided into control group(n=15),model group(n=15) and rosiglitazone group(n=15). The behavioral changes of the mice in various  groups were observed by pole climbing experiment;immunohistochemistry and Western blotting methods were used to observe  the  expressions of iNOS,IL-6 and TH in substantia nigra of the mice. Results The model mice exhibited typical PD-like behaviors,such as tremor,gait retardation; compared with control group,the time of T-turn and T-LA in model group was prolonged,the differences between two groups were significant(P<0.05); Compared with control group,TH-positive neurons lost obviously,the numbers of iNOS,IL-6 and TH immunoreactive cells and the expression levels in substantia nigra  of the midbrain were increased markedly,and the differences were statistically significant(P<0.05).After treated with rosiglitazone,the  changes mentioned above were reduced significantly;there were significant differences of the numbers of iNOS,IL-6 and TH positive cells and their protein expression levels compared with model group(P<0.05). Conclusion Rosiglitazone may protect the dopaminergic neurons by  inhibiting the expressions of iNOS and IL-6.

Key words: Parkinson’s disease, tyrosine hydr
oxylase,
inducible nitric oxide synthase, interleukin-6, rosiglitazone

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