黄芪对大鼠脑外伤后脑组织线粒体酶活性影响的研究

The effect of Huangqi on the activity of enzyme in brain mitochondria after brain trauma in rats

目的 探讨黄芪对大鼠创伤性脑损伤后脑组织线粒体酶活性水平的影响。方法 建立大鼠自由落体脑挫裂伤模型 ,伤后立即腹腔注射黄芪注射液 ,采用生化检测的方法分别测定治疗后 4小时、2 4小时和 4 8小时及各自的对照组大鼠脑组织线粒体ATP酶和超氧化物歧化酶 (SOD)活性以及丙二醛 (MDA)水平。结果 黄芪治疗后 2 4小时和 4 8小时大鼠脑组织线粒体ATP酶和SOD活性均高于各自时间点对照组 (P <0 .0 5 ,P <0 .0 1) ,而MDA水平则明显低于各自对照组 (P <0 .0 1)。结论 黄芪可以通过影响线粒体功能而减轻大鼠创伤性脑损伤后的继发性脑损害 。

Objective To investigate the effects of Huangqi on the activity of enzyme,in brain mitochondria after brain trauma in rats.Methods The models of laceration of brain incluced by free falling were set up.The Huangqi was intraperitoneally injected immediately after brain trauma. The mitochondria were isolated at 4 h,24 h and 48 h after treatment respectively while the activity of ATPase and SOD and the content of MDA were measured by biochemical technique.Results Activity of ATPase( P < 0.05 ) and SOD( P < 0.01 ) were elevated, and the level of MDA in brain mitochondria was reduced markedly in rats treated with Huangqi( P <0.01).Conclusion Treatment with Huangqi can improve the secondary brain trauma by affecting mitochondrial function,and improve the prognosis.