法医学杂志 ›› 2015, Vol. 31 ›› Issue (2): 93-96.DOI: 10.3969/j.issn.1004-5619.2015.02.004

• 论著 • 上一篇    下一篇

大鼠局灶性脑挫伤后p35及p25的表达变化

王汉志1,2,李如波1,王正印1,张立军3   

  1. (1. 中国医科大学法医学院法医病理学研究室,辽宁 沈阳 110001; 2. 苏州市公安局,江苏 苏州 215000; 3. 调兵山市公安局,辽宁 调兵山 112700)
  • 发布日期:2015-04-25 出版日期:2015-04-28
  • 通讯作者: 李如波,男,博士,教授,主要从事脑死亡及弥漫性脑损伤的法医病理学研究;E-mail:rbli@mail.cmu.edu.cn
  • 作者简介:王汉志(1986—),男,山东烟台人,硕士研究生,主要从事脑损伤时间推断研究;E-mail:hanzhi3414@163.com
  • 基金资助:

    辽宁省教育厅科学研究一般项目(L2013317);辽宁省自然科学基金资助项目(2014021027)

Expression of p35 and p25 after Focal Cerebral Contusion in Rat

WANG HAN-ZHI1,2, LI RU-BO1, WANG ZHENG-YIN1, ZHANG LI-JUN3   

  1. (1. Department of Forensic Pathology, College of Forensic Medicine, China Medical University, Shenyang 110001, China; 2. Public Security Bureau of Suzhou, Suzhou 215000, China; 3. Public Security Bureau of Diaobingshan, Diaobingshan 112700, China)
  • Online:2015-04-25 Published:2015-04-28

摘要: 目的 探讨大鼠局灶性脑挫伤后脑中p35和p25表达变化的时间规律性,为脑损伤时间推断提供更多依据。 方法 50只成年雄性SD大鼠随机分为损伤即刻(0 h)组,伤后6 h、12 h、24 h、3 d、5 d、7 d、10 d组,同时设立正常组和假手术组,每组5只,建立大鼠局灶性脑挫伤模型,运用HE、免疫组织化学染色及Western印迹法等方法检测损伤不同时间后损伤周边区脑组织p35及p25的蛋白表达。 结果 正常组和假手术组蛋白表达较多p35和少量p25。在局部脑挫伤后,p35随时间呈现单峰变化,p25随时间呈现双峰变化。 结论 大鼠局灶性脑挫伤后p35和p25的表达呈现不同规律性并有较好的时间相关性,可为脑损伤时间推断提供较好的依据。

关键词: 法医病理学, 脑损伤, p35, p25, 大鼠

Abstract: Objective To study the expression of p35 and p25 in rat after focal cerebral contusion and to provide experimental data for estimating brain injury time. Methods Fifty adult male SD rats were randomly divided into 0 h, 6 h, 12 h, 24 h, 3 d, 5 d, 7 d, 10 d after focal cerebral contusion, control and sham-operated groups (5 rats each group). The focal cerebral contusion rat model was established. The expression of p35 and p25 protein of the damage peripheral zone in brain were detected by HE staining, immunohistochemistry and Western blotting at different injury time. Results A large number of p35 protein and a small amount of p25 protein were expressed in control group and sham-operated group. After focal cerebral contusion, p35 presented unimodal change with time and p25 presented bimodal changes with time. Conclusion Expression of p35 and p25 showed different regularity with good time correlation, which could help to estimate the brain injury time.

Key words: forensic pathology, brain injuries, p35, p25, rats

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