基金supported by the Key Project of Science and Technology Foundation of Ministry of Education in China (No.209039)the Research Projects of Department of Health in Heilongjiang Province+3 种基金China (No. 2007-016)the Science and Technology Project (No. 11511424)Funds for Returnees of Oversea Scholar (No. 1251H005) of Department of Education in Heilongjiang ProvinceChina
文摘本文旨在探讨重组人红细胞生成素(recombinant human erythropoietin, rhEPO)是否通过抑制甘油醛三磷酸脱氢酶(glyc-eraldehyde-3-phosphate dehydrogenase, GAPDH)核内过表达减少脑缺血再灌注大鼠神经元凋亡。大脑中动脉栓塞法制作脑缺血再灌注大鼠模型。48只Sprague-Dawley大鼠随机分为假手术组、生理盐水对照组和EPO处理组。TTC染色、尼氏染色及Hoechst-33258免疫荧光分别观察EPO对脑组织缺血和缺血半影区神经元凋亡的影响;Hoechst-33258和GAPDH免疫荧光双染观察EPO对GAPDH核内过表达的影响。结果显示,与生理盐水对照组相比,再灌注同时开始给予rhEPO (3 000 U/kg,3次/日,腹腔注射)显著抑制缺血再灌注引起的神经元GAPDH核内过表达,同时显著减少半影区神经元凋亡数目,减轻缺血性脑损伤。以上结果提示,rhEPO可能通过抑制GAPDH核内过表达减少脑缺血再灌注大鼠半影区神经元凋亡,为探讨EPO的神经保护机制提供了实验证据。
