中国神经再生研究(英文版) ›› 2015, Vol. 10 ›› Issue (8): 1298-1304.doi: 10.4103/1673-5374.162764

• 原著:脑损伤修复保护与再生 • 上一篇    下一篇

电针预处理调节慢性应激抑郁大鼠海马组织蛋表达:发挥抗抑郁效应  

  

  • 收稿日期:2015-06-10 出版日期:2015-08-24 发布日期:2015-08-24
  • 基金资助:

    国家自然科学基金(81373729)

Electroacupuncture pretreatment exhibits anti-depressive effects by regulating hippocampal proteomics in rats with chronic restraint stress

Zhuo Guo1, Ya Tu1, Tian-wei Guo1, Yun-chu Wu2, Xue-qin Yang1, Lan Sun1, Xin-jing Yang3, Wen-yue Zhang1, Yu Wang1, Xu-hui Zhang1   

  1. 1 Beijing University of Chinese Medicine, Beijing, China
    2 Shijiazhuang Hospital of Traditional Chinese Medicine, Shijiazhuang, Hebei Province, China  
    3 Beijing Rehabilitation Hospital of Capital Medical University, Beijing, China
  • Received:2015-06-10 Online:2015-08-24 Published:2015-08-24
  • Contact: Ya Tu, Ph.D., tuyab@263.net.
  • Supported by:

    This study was supported by the National Natural Science Foundation of China, No. 81373729.

摘要:

电针治疗抑郁症的临床有效性已经得到了广泛的认可,但电针抗抑郁的相关信号转导通路和目标蛋白质仍不清楚。实验将SD大鼠随机分为3组:对照组、模型组和电针组。模型组和电针组大鼠采用慢性束缚应激结合孤养28 d建立抑郁模型,电针组在束缚应激前进行电针干预(1 mA,2 Hz,discontinuous wave 20 min),选穴为百会(GV20)和印堂(GV29),实验周期共28 d。旷场实验检测显示,与模型组相比,电针组大鼠垂直竖立次数和水平穿越格数能力均增加,体质量显著增加。在实验第28天采用同位素标记相对和绝对定量技术检测模型组与电针组海马组织的差异蛋白表达情况,同时通过蛋白相邻类聚簇数据库,预测这些差异蛋白质的可能功能。结果共筛选出27个差异蛋白(不包括不典型蛋白),除了蛋白功能未知外,蛋白相邻类聚簇主要集中在一般功能预测、信号转导机制、氨基酸的运输和代谢等。结果证实,电针预处理可能通过调节海马组织上述蛋白的表达而发挥抗抑郁作用。

关键词: 神经再生, 中医药, 电针, 抑郁症, 慢性束缚应激, 同位素相对和绝对定量技术, 差异蛋白, 蛋白相邻类聚簇, 国家自然科学基金

Abstract:

The clinical effect of electroacupuncture on depression is widely recognized. However, the signal transduction pathways and target proteins involved remain unclear. In the present study, rat models of chronic restraint stress were used to explore the mechanism by which electroacupuncture alleviates depression. Rats were randomly divided into control, model, and electroacupuncture groups. Chronic restraint stress was induced in the model and electroacupuncture groups by restraining rats for 28 days. In the electroacupuncture group, electroacupuncture pretreatment at Baihui (GV20) and Yintang (GV29) acupoints was performed daily (1 mA, 2 Hz, discontinuous wave, 20 minutes) prior to restraint for 28 days. Open field tests and body weight measurements were carried out to evaluate the depressive symptoms at specific time points. On day 28, the crossing number, rearing number, and body weights of the model group were significantly lower than those in the control group. Behavior test results indicated that rat models of depressive-like symptoms were successfully established by chronic restraint stress combined with solitary raising. On day 28, an isobaric tag for a relative and absolute quantitation-based quantitative proteomic approach was performed to identify differentially expressed proteins in hippocampal samples obtained from the model and electroacupuncture groups. The potential function of these differential proteins was predicted through the use of the Cluster of Orthologous Groups of proteins (COG) database. Twenty-seven differential proteins (uncharacteristic proteins expected) were selected from the model and electroacupuncture groups. In addition to unknown protein functions, COG are mainly concentrated in general prediction function, mechanism of signal transduction, amino acid transport and metabolism groups. This suggests that electroacupuncture improved depressive-like symptoms by regulating differential proteins, and most of these related proteins exist in nerve cells.
 

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