法医学杂志 ›› 2006, Vol. 0 ›› Issue (3): 168-170+.

• 论文 • 上一篇    下一篇

大鼠脑挫伤后神经细胞DNA片段化和含量变化与损伤时间的关系

李凡;廖志钢;马书玲;王晔;官鹏;刘敏;   

  1. 四川大学华西基础医学和法医学院,四川大学华西基础医学和法医学院,河南科技大学法医学系,四川大学华西基础医学和法医学院,四川大学华西基础医学和法医学院,四川大学华西基础医学和法医学院 四川成都610041河南科技大学法医学系,河南洛阳471003,四川成都610041,河南洛阳471003,四川成都610041,四川成都610041,四川成都610041
  • 发布日期:2006-06-25 出版日期:2006-06-28

Relationship between the Injury Time and DNA Fragmentation and its Quantity in Rat Brain

LI FAN1,2, LIAO ZHI-GANG1, MA SHU-LING2, WANG YE1,GUAN PENG1,LIU MIN1(1. WEST CHINA SCHOOL OF PRECLINICAL AND FORENSIC MEDICINE, SICHUAN UNIVERSITY, CHENGDU 610041, CHINA; 2.DEPARTMENT OF FORENSIC MEDICINE OF HENAN UNIVERSITY OF SCIENCE AND TECHNOLOGY,LUO   

  • Online:2006-06-25 Published:2006-06-28

摘要: 目的观察大鼠脑挫伤后神经细胞DNA片段化和DNA含量的时序变化规律。方法建立自由落体打击大鼠脑挫伤动物模型,采用TUNEL和Feulgen′sDNA染色方法,结合图像分析技术进行研究。结果大鼠脑挫伤后随着损伤时间延长DNA片段化程度逐渐增强,而DNA含量逐渐降低。结论采用TUNEL和Feulgen′sDNA染色法观察伤后DNA片段化和DNA含量变化,可以应用于脑损伤时间推断的研究,探索推断损伤时间的新方法。

关键词: 脑挫伤, TUNEL染色, Feulgen′sDNA染色, 损伤时间推断

Abstract: Objective To observe the changes of DNA fragmentation and its quantity along with the time of injury in nerve cells after brain contusion. Methods The model of brain contusion caused by free drop hammer was established. TUNEL and Feulgen′s DNA staining conjoined with image analysis technique were used for exploration. Results With the gradually rising of DNA fragmentation,DNA quantity was declining in the brain tissue after contusion. Conclusion TUNEL and Feulgen′s DNA staining conjoined with image analysis technique could be utilized in the timing of brain injury and provide a new approach for this issue.

Key words: brain contusion, TUNEL staining, Feulgen′s DNA staining, timing of injury