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1. 重庆医科大学基础医学院法医学教研室
2. 重庆医药高等专科学校医学技术院
3. 重庆市公安局刑警总队技术处
纸质出版日期:2016,
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[1]张鹏,赵敏珠,朱士胜,刘梦,高军,李红卫,李剑波.微管相关蛋白-1B在弥漫性轴索损伤中的表达变化与意义[J].重庆医科大学学报,2016,41(01):34-37.
Zhang Peng, Zhao Minzhu, Zhu Shisheng, et al. Expression and significance of microtubule-associate protein 1B in rats with diffuse axonal injuries[J]. Journal of Chongqing Medical University, 2016,41(1):34-37.
[1]张鹏,赵敏珠,朱士胜,刘梦,高军,李红卫,李剑波.微管相关蛋白-1B在弥漫性轴索损伤中的表达变化与意义[J].重庆医科大学学报,2016,41(01):34-37. DOI: 10.13406/j.cnki.cyxb.000852.
Zhang Peng, Zhao Minzhu, Zhu Shisheng, et al. Expression and significance of microtubule-associate protein 1B in rats with diffuse axonal injuries[J]. Journal of Chongqing Medical University, 2016,41(1):34-37. DOI: 10.13406/j.cnki.cyxb.000852.
目的 :观察微管相关蛋白-1B(microtubule-associate protein 1B
MAP1B)在SD大鼠弥漫性轴索损伤(diffuse axonal injury
DAI)后脑组织中表达的变化
探索其表达变化的意义。方法 :采用改良的Marmarou法建立SD大鼠DAI模型
分为空白对照组(10只
不予任何处理)
假打击组(10只
给予致伤组相同的打击前准备
但不予以打击)
致伤6 h组(10只)
致伤1 d组(10只)和致伤3 d组(10只)
分别于打击6 h、1 d、3 d后
处死动物
提取脑组织
结合Western blot和免疫组化方法
观察SD大鼠脑组织中MAP1B表达的变化。结果:Western blot结果显示致伤6 h组(0.50±0.07)、致伤1 d组(0.56±0.07)和致伤3 d组(0.50±0.06)中MAP1B表达水平较空白对照组(0.30±0.06;P=0.001
P=0.000
P=0.001)、假打击组(0.30±0.04;P=0.001
P=0.000
P=0.001)明显升高。免疫组化结果显示致伤6 h组(4.70±0.79)、致伤1 d组(4.78±0.86)和致伤3 d组(4.70±0.89)中MAP1B表达水平较空白对照组(4.06±1.15;P=0.023
P=0.007
P=0.023)、假打击组(3.90±1.46;P=0.002
P=0.000
P=0.002)明显升高。结论:SD大鼠DAI后脑组织中MAP1B表达水平上调
提示其参与了DAI后轴索损伤的病理改变过程
并可能在稳定、修复及再生受损轴索的机制中起着重要作用。
Objective:To examine the expression of the microtubule-associate protein 1B(MAP1B)in rats with diffuse axonal injury(DAI)as well as to elucidate the mechanisms of MAP1 B in the procession of axonal repairment. Methods:DAI was induced in adult male SD rats using an injury model adapted from Marmarou. The rats were divided into five groups: injured 6 h group(n=10)
injured1 d group(n=10)
injured 3 d group(n=10)
sham group(n=10)and sham-injured group(n=10). The animals were sacrificed at 6 h
on 1 d and 3 d post injury. Western blot and immunohistochemistry were performed to observe the expression of MAP1 B in rats with DAI. Results :Western blot and immunohistochemistry analyses showed MAP1 B expression was up-regulated in the brain tissues of injured 6 h group
injured 1 d group
injured 3 d group than in sham group and sham-injured group. Conclusion:Expression of MAP1 B is increased in the brain tissues of injury group
indicating that MAP1 B may be involved in the pathophysiological mechanisms of DAI and may play an important role in the repair of the axon after head trauma.
弥漫性轴索损伤微管相关蛋白-1B轴索修复SD大鼠
diffuse axonal injurymicrotubule-associate protein 1BrepairmentSD rats
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