基础医学与临床 ›› 2012, Vol. 32 ›› Issue (9): 1021-1025.

• 研究论文 • 上一篇    下一篇

大鼠脑出血后V1αR和AQP4表达升高与脑水肿的形成相关

张波1,孙善全2,甘胜伟3,钟小燕3,伍修宇4,徐进3,黄娟4,5   

  1. 1. 重庆医科大学基础医学院解剖教研室
    2. 重庆医科大学神经科学研究中心
    3. 重庆医科大学
    4. 重庆医科大学解剖学教研室
    5.
  • 收稿日期:2011-09-15 修回日期:2011-12-28 出版日期:2012-09-05 发布日期:2012-08-28
  • 通讯作者: 孙善全 E-mail:sunsq2151@sohu.com
  • 基金资助:
    骨髓间充质干细胞瘤化中STAT3信号通路过度激活的作用机制与规避研究

Increased expression of V1α receptor and AQP4 are related to rat brain edema after intracerebral hemorrhage

  • Received:2011-09-15 Revised:2011-12-28 Online:2012-09-05 Published:2012-08-28

摘要: 目的 研究精氨酸加压素1α受体(V1αR)和水通道蛋白4(AQP4)在SD大鼠脑出血(ICH)脑组织中的表达变化及两者在脑水肿形成中的作用。方法 将自体血注入大鼠尾状核建立脑出血模型,分别于术后6、12、24和48h运用干湿重法、免疫荧光和Western blot检测脑含水量(BWC)、V1αR和AQP4蛋白的表达。结果 脑出血后6h,V1αR和AQP4的表达开始增加,至48h达到高峰分别为(21.88±0.44和23.16±0.67),显著高于假手术组(14.32±0.55和13.90±0.40)。与脑含水量呈正相关(P<0.05)。结论 V1aR介导的AQP4表达升高是脑出血后脑水肿形成的主要原因。

关键词: 精氨酸加压素, V1α受体, 水通道蛋白4, 脑水肿

Abstract: Objective To investigate the change of arginine-vasopressin V1α receptor(V1αR)and aquaporin 4(AQP4) expression,to explore the mechanism of brain edema caused by intracerebral hemorrhage(ICH).Methods Autologous blood were injected into the caudate nucleus to establish ICH models in rats.The changes of brain water content (BWC)were measured by wet and dry weight methods.The expression of V1αR and AQP4 were detected by immunofluorescence and Western blot after 6、12、24 and 48h.Results The expression of V1αR and AQP4 increased at 6h after ICH,and significantly increased the peak at 48h(21.88±0.44 and 23.16±0.67)than the sham group(14.32±0.55 and 13.90±0.40).V1αR and AQP4 expressions positively correlated with BWC(P<0.05).Conclusion The increased expression of AQP4 mediated by V1αR played an important role in the brain edema after ICH.

Key words: arginine-vasopressin, V1a receptor, aquaporin 4, brain edema

中图分类号: