CAJ | 학술논문

目的：探讨灯盏花素对脑缺血再灌注大鼠海马Akt/（PKB）表达的影响。方法采用Zea-Longa法建立脑缺血再灌注动物模型。72只SD大鼠随机分为：假手术组（Sham ，8只）、灯盏花素治疗组（Br ，32只）、缺血再灌注组（I/R ，32只）。B r治疗组和I/R组依据缺血后再灌注的不同时间点再细分为3、12，24、48 h 4个小组。应用免疫组织化学方法和蛋白印迹法检测各组大鼠海马Akt蛋白的表达。结果与假手术组相比，在缺血再灌注3 h时，大鼠海马Akt蛋白的阳性表达已明显降低，在24 h时表达量最低，随后表达开始上升（ P ＜0．05）；与相同时间点的缺血再灌注组大鼠比较，3 h时，Br治疗组的Akt蛋白阳性表达未见明显降低（ P ＞0．05），其余各时间点则明显降低（ P ＜0．05）；蛋白印迹法也得到了相同的结论。结论灯盏花素很可能通过上调Akt蛋白的表达改善脑缺血再灌注损伤。
목적：탐토등잔화소대뇌결혈재관주대서해마Akt/（PKB）표체적영향。방법채용Zea-Longa법건립뇌결혈재관주동물모형。72지SD대서수궤분위：가수술조（Sham ，8지）、등잔화소치료조（Br ，32지）、결혈재관주조（I/R ，32지）。B r치료조화I/R조의거결혈후재관주적불동시간점재세분위3、12，24、48 h 4개소조。응용면역조직화학방법화단백인적법검측각조대서해마Akt단백적표체。결과여가수술조상비，재결혈재관주3 h시，대서해마Akt단백적양성표체이명현강저，재24 h시표체량최저，수후표체개시상승（ P ＜0．05）；여상동시간점적결혈재관주조대서비교，3 h시，Br치료조적Akt단백양성표체미견명현강저（ P ＞0．05），기여각시간점칙명현강저（ P ＜0．05）；단백인적법야득도료상동적결론。결론등잔화소흔가능통과상조Akt단백적표체개선뇌결혈재관주손상。
Objective To study the expression of Akt/PKB in hippocampus of cerebral ischemia-reperfusion rats after breviscapine was injected .Methods The ischemia-reperfusion model was induced with Zea-Longa′s way . Seventy-two SD rats were randomly divided into the sham group ,ischemia-reperfusion group(I/R) and breviscap-ine group(Br) at different time points (3 ,12 ,24 ,48 h) after reperfusion on average .The expression of Akt in hippocampus of all groups was examined by immunochemistry and Western blotting methods .Results Compared with the sham group ,the positive expression of Akt in hippocampus of the rats in I/R group was decreased signifi-cantly at the point of 3h after reperfusion ( P <0.05) ,to the peak at 24 h;compared with the rats in I/R group at the same time point ,the positive expression of Akt didn′t evidently increase at the point of 3 h after breviscap-ine was injected( P >0.05) ,and increased significantly in 12 ,24 ,48 h groups( P <0.05);and the same result was obtain by western blotting method .Conclusion Breviscapine could up-regulate the expression of Akt in hip-pocampus of cerebral ischemia-reperfusion rats .