神经药理学报››2017,Vol. 7››Issue (2): 59-59.

• 帕金森病相关研究 •上一篇下一篇

Effect of Resveratrol on Motor Dysfunction in Unilateral 6-hydroxydopamine Parkinson’s Model Rats and its Underlying Mechanisms

HUANG Nan-qu,CHEN Ming-ji,ZHANG Ying,JIN Feng

  1. Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education,Zunyi Medical University,Zunyi,563003,China
  • 出版日期:2017-04-26发布日期:2017-12-01
  • 通讯作者:JIN Feng,E-mail:jinfeng1115@zmc.edu.cn
  • 基金资助:

    This work was supported by the NSFC (No.81660599),the Foundation of Zunyi Medical University (No.2013F-686,F-738),the Natural Science Foundation of Science and Technology Department (No.[2009]2147) and the Foundation of Traditional Chinese Medicine Administration of Guizhou Province (No.QZYY2010-59,D-274)

    • Online:2017-04-26Published:2017-12-01

    摘要:Objective:The present study was designed to investigate the effect of resveratrol(Res) on the motor function of Parkinson’s model rats induced by 6-hydroxydopamine (6-OHDA) and to explore its underlying mechanism. Methods:After a week of adaptive feeding,50 male Sprague-Dawley (SD) rats were randomly divided into fi ve groups:sham-operated group,normal group (Res,30 mg·kg-1),model group (6-OHDA,8 μg),6-OHDA+Res low-dose group (15 mg·kg-1,6-OHDA+Res high-dose group (30 mg·kg-1). 6-OHDA 8 μg (2 μg·μL-1) were injected into the substantia nigra of the rats to establish the model of dopaminergic neuronal damage,while the rats of sham group were injected with volume-matched saline with 0.2% Vitamin C.Rats were pretreated with Res for 1 day before 6-OHDA treatment. Model and sham groups were administered with volume-matched vehicle for 36 days.Rotarod test was applied to evaluate motor function of rats on 7 th,14 th and 21 th day after surgery,open fi eld experiment and grid-walking test applied on 33 th and 35 th day,respectively. Then the rats were sacrificed.Immunohistochemistry was used to detect the number of TH-positive cells in substantia nigra pars compacta (SNc);the protein expression of TH,Bax,Bcl-2,pro-caspase-3, active-caspase-3,p-PDK1 and p-Akt in midbrain were detected by Western blot. Results:The body weight,motor function,number of dopaminergic neurons in SNc and the protein expression of TH in midbrain of model group were significantly decreased compared with sham group;the protein of Akt phosphorylation levels were decreased while it showed no effect on PDK1,and the expression of apoptosis-related proteins Bax/Bcl-2,active-caspase-3 were significantly increased,pro-caspase-3 decreased. However,compared with model,the body weight,motor function,number of dopaminergic neurons in SNc and the protein expression of TH in midbrain of Res high-dose group were markedly increased;the protein of Akt phosphorylation levels were increased while it showed no effect on PDK1,the protein level of BDNF and TrkB were signifi cantly decreased and the expression of apoptosis-related proteins Bax/Bcl-2,active-caspase-3 were significantly decreased,and pro-caspase-3 were increased.Conclusion:Under the experimental conditions,6-OHDA-induced motor dysfunction and apoptosis in dopaminergic neuronal cells of rats is signifi cantly attenuated by Res,and its potential mechanism may be related to up-regulation of Akt phosphorylation at Ser473 and inhibit the expression of apoptosisrelated proteins.

    关键词:Parkinson&rsquo,s disease,Akt,6-hydroxydopamine,resveratrol,apoptosis

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