《中国康复理论与实践》 ›› 2017, Vol. 23 ›› Issue (9): 1043-1050.doi: 10.3969/j.issn.1006-9771.2017.09.011

• 基础研究 • 上一篇    下一篇

磷脂酰肌醇3激酶、蛋白激酶B、哺乳动物雷帕霉素靶蛋白在帕金森病模型大鼠黑质区的表达

胡馨月, 刘斌, 徐佳莉, 张晋霞   

  1. 华北理工大学附属医院神经内一科,河北唐山市 063000。
  • 收稿日期:2017-01-10 修回日期:2017-04-01 出版日期:2017-09-25 发布日期:2017-10-10
  • 通讯作者: 刘斌,男,硕士,主任医师,教授,研究生导师。E-mail: liubintsh@126.com。
  • 作者简介:胡馨月(1989-),女,汉族,河北承德市人,硕士研究生,医师,主要研究方向:帕金森病及相关疾病。
  • 基金资助:
    河北省医学科学研究重点课题(No.20130064)

Expression of Phosphatidylinositol 3-Kinase, Protein Kinase B and Mammalian Target of Rapamycin in Substantia Nigra in Rats with Parkinson's Disease

HU Xin-yue, LIU Bin, XU Jia-li, ZHANG Jin-xia   

  1. First Department of Neurology, the Affiliated Hospital of North China University of Science and Technology, Tangshan, Hebei 063000, China
  • Received:2017-01-10 Revised:2017-04-01 Published:2017-09-25 Online:2017-10-10
  • Contact: Correspondence to LIU Bin. E-mail: liubintsh@126.com

摘要: 目的观察磷脂酰肌醇3激酶(PI3K)/蛋白激酶B (Akt)/哺乳动物雷帕霉素靶蛋白(mTOR)信号通路相关蛋白在帕金森病模型大鼠黑质区的表达及变化情况。方法96只健康Sprague-Dawley大鼠随机分为假手术组、模型组、PI3K抑制剂LY294002组及p-mTOR抑制剂雷帕霉素组,每组又分为模型制备成功后4 d和8 d两个亚组,每个亚组12只。后三组颈背部皮下注射鱼藤酮制作帕金森病大鼠模型,相应时间点免疫组化及Western blotting检测大鼠黑质区PI3K、p-Akt、p-mTOR蛋白表达。结果与假手术组比较,模型组各时间点PI3K、p-Akt和p-mTOR蛋白表达增加(P<0.05),8 d亚组高于4 d亚组(P<0.05)。与模型组比较,LY294002组各时间点p-Akt、p-mTOR蛋白表达减少(P<0.05),PI3K蛋白表达无明显变化(P>0.05);雷帕霉素组各时间点p-mTOR蛋白表达下降(P<0.05),PI3K、p-Akt蛋白表达无明显变化(P>0.05)。结论黑质PI3K/Akt/mTOR信号通路激活可能是帕金森病发生、发展的重要机制之一。

关键词: 帕金森病, 磷脂酰肌醇3激酶, 蛋白激酶B, 哺乳动物雷帕霉素靶蛋白, 黑质, 大鼠

Abstract: ObjectiveTo observe the expression of phosphatidylinositol 3-kinase (PI3K) / protein kinase B (Akt) / mammalian target of rapamycin (mTOR) signaling pathway in substantia nigra in rats with Parkinson's disease (PD). MethodsA total of 96 Sprague-Dawley rats were randomly divided into sham group, model group, PI3K inhibitor LY294002 group and mTOR inhibitor rapamycin group. Each group was divided into 4 days and 8 days subgroups after the model. PD model was established by injecting rotenone subcutaneously. The expression of PI3K, p-Akt and p-mTOR in substantia nigra was detected with immunohistochemistry and Western blotting. ResultsCompared with the sham group, the expression of PI3K, p-Akt and p-mTOR increased in the model group (P<0.05), and was more in 8 days subgroup than in 4 days subgroup (P<0.05). Compared with the model group, the expression of p-Akt and p-mTOR reduced in the LY294002 group (P<0.05), while the expression of PI3K varied little (P>0.05); the expression of p-mTOR decreased in the rapamycin group (P<0.05), while the expression of PI3K and p-Akt varied little (P>0.05). ConclusionPI3K/Akt/mTOR signaling pathway is over activated in substantia nigra in rats with Parkinson's disease, which may play an important role in occurrence and development of the disease.

Key words: Parkinson's disease, phosphatidylinositol 3-kinase, protein kinase B, mammalian target of rapamycin, substantia nigra, rats

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