法医学杂志 ›› 2016, Vol. 32 ›› Issue (1): 18-20.DOI: 10.3969/j.issn.1004-5619.2016.01.004

• 论著 • 上一篇    下一篇

大鼠弥漫性脑损伤后水通道蛋白4的表达

陈仁辉1,2,何松国1,蔡灿鑫1,黄博学1,王志荣1   

  1. (1. 福建警察学院刑事科学技术系,福建 福州 350007; 2. 福建医科大学病理学系,福建 福州 350108)
  • 发布日期:2016-02-25 出版日期:2016-02-28
  • 作者简介:陈仁辉(1979—),男,博士研究生,副教授,主要从事闭合性颅脑损伤的分子病理学研究;E-mail:wnmccrh@hotmail.com
  • 基金资助:

    福建省教育厅科技项目资助项目(JA13339)

Expression of Aquaporin 4 in Diffuse Brain Injury of Rats

CHEN REN-HUI1,2, HE SONG-GUO1, CAI CAN-XIN1, HUANG BO-XUE1, WANG ZHI-RONG1   

  1. (1. Department of Criminal Sciences and Technology, Fujian Police College, Fuzhou 350007, China; 2. Department of Pathology, Fujian Medical University, Fuzhou 350108, China)
  • Online:2016-02-25 Published:2016-02-28

摘要: 目的 观察大鼠弥漫性脑损伤后水通道蛋白4(aquaporin 4,AQP4)的表达,探讨其在脑水肿发生中的作用。 方法 参照Marmarou的打击负荷伤模型,建立大鼠弥漫性脑损伤动物模型。用干湿重法测定脑组织含水量,用伊文思蓝(Evans blue,EB)检测血脑屏障通透性的变化,运用免疫组织化学方法观察AQP4的表达。 结果 打击后3 h脑组织含水量增加,24 h达到高峰。脑组织EB含量伤后明显增加,12 h达到高峰。AQP4于打击后3 h表达明显增强,24 h达到高峰,AQP4阳性表达的胶质细胞数量明显增多。 结论 大鼠弥漫性脑损伤后血脑屏障通透性的增加及AQP4表达的增强促进脑水肿的发生,AQP4在胶质细胞的表达变化可用于辅助诊断弥漫性脑损伤。

关键词: 法医病理学, 脑损伤, 水通道蛋白质4, 大鼠

Abstract: Objective To observe the expression of aquaporin 4 (AQP4) in diffuse brain injury (DBI) of rats and to explore the corresponding effect of AQP4 for brain edema. Methods The rat model of DBI was established using Marmarou’s impact-compression trauma model. Brain water content was measured by dry-wet weight method. Blood-brain barrier permeability was evaluated by Evans blue (EB) staining. Immunohistochemical method was used to observe the expression of AQP4. Results Brain water content increased after 3 h and peaked at 24 h after DBI. Brain EB content significantly increased and peaked at 12 h after DBI. The expression of AQP4 significantly increased after 3 h and peaked at 24 h after DBI, and the number of AQP4 positive astrocytes increased. Conclusion The increment of the permeability of blood-brain barrier and the expression of AQP4 may contribute to the development of brain edema in rat DBI. The change of AQP4 expression in astrocytes may also contribute to determine DBI.

Key words: forensic pathology, brain injuries, aquaporin 4, rats

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