基础医学与临床 ›› 2012, Vol. 32 ›› Issue (4): 428-432.

• 研究论文 • 上一篇    下一篇

急、慢性应激对大鼠海马BDNF表达的时序性影响

邵淑红1,李尊岭2,潘芳3,石寿森4   

  1. 1. 滨州医学院烟台校区应用心理学教研室
    2. 滨州医学院生物化学与分子生物学研究所
    3. 山东大学医学院医学心理学研究所
    4. 滨州医学院精神卫生学教研室
  • 收稿日期:2010-08-23 修回日期:2011-11-14 出版日期:2012-04-05 发布日期:2012-03-21
  • 通讯作者: 石寿森 E-mail:byshiss@126.com
  • 基金资助:
    省自然科学基金

Effect of different stress on the expression of BDNF and BDNF mRNA in the hippocampus of rats

  • Received:2010-08-23 Revised:2011-11-14 Online:2012-04-05 Published:2012-03-21

摘要: 摘要:目的 观察急性应激和重复低强度强迫游泳应激后大鼠海马BDNF及BNDF mRNA在不同时间点的动态表达;观察慢性应激条件下动物行为改变。方法 采用反转录-聚合酶链反应(RT-PCR)方法,观察急性和慢性应激对大鼠海马BDNF mRNA的动态表达的影响;采用Western bloting方法检测海马BDNF 蛋白表达量的变化。结果 急性应激导致动物海马BDNF mRNA及其产物表达增加,3小时后表达逐渐降低,与对照组比较差异具有显著性;慢性应激后BDNF蛋白表达呈降低趋势,并在多时点显著低于急性应激组 (p<0.05)。结论 急性应激显著增强大鼠海马BDNF表达;慢性应激组大鼠BNDF mRNA表达存在一定适应现象,且多时点表达量显著低于急性应激组。

关键词: :应激, BDNF, 海马

Abstract: ABSTRACT : Objective To study change of BDNF expression in hippocampus and prefrontal lobe of rats by acute and chronic forced-swimming stress , and study the effect of different intensity stress on the behaviors of rats. Method After different intensity stress by forced swimming in the water, the change of BDNF mRNA expression in hippocampus was observed by RT-PCR, and Western blotting was used to explore the expression of BDNF protein in rat hippocampus. Result Acute stress resulted in elevated expression of BNDF mRNA and protein, and the expression of BDNF became lower and lower after 3 hours . Meanwhile the chronic stress led to the lower level expression of the BDNF compared with acute group in many time points (p<0.05).Conclusion Acute stress resulted in the high level expression of BDNF in hippocampus. Chronic repeated stress led to the habituation expression of BNDF, which was lower than that of acute stress group.

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