脂肪间充质干细胞治疗外伤性脑损伤

被引:4
作者
朱俊卿
洪军
崔建忠
王凯杰
机构
[1] 河北医科大学附属唐山工人医院
关键词
间充质干细胞; 干细胞移植; 脑源性神经营养因子; 胶质细胞源性神经营养因子; 干细胞; 移植; 脑损伤; 大鼠尾静脉; Morris水迷宫;
D O I
暂无
中图分类号
R651.15 [];
学科分类号
摘要
背景:临床与动物研究证实,间充质干细胞移植能迁移至脑损伤区域,对创伤性脑损伤有一定的治疗效果。目的:进一步验证脂肪间充质干细胞对大鼠外伤性脑损伤造成的局部损伤的治疗作用。方法:大鼠随机分为3组:实验组和对照组参照文献以脑冷冻伤法制作SD大鼠脑损伤模型,实验组造模成功2 d后进行脂肪间充质干细胞尾静脉移植;对照组只尾静脉注射等量生理盐;正常组大鼠不作任何处理。采用Morris水迷宫测试评价大鼠神经功能恢复情况;体个分离、培养脂肪间充质干细胞,在倒置显微镜下观察脂肪间充质干细胞的形态,免疫组织化学检测干细胞在大鼠损伤脑组织中的分布及脑源性神经营养因子和胶质细胞源性神经营养因子含量。结果与结论:(1)Morris水迷宫测试结果显示:与对照组比,实验组SD大鼠平均逃避潜伏期迅速下降(P<0.05),而同时实验组大鼠逃避潜伏期越来越接近于正常组大鼠;(2)免疫组织化学后倒置显微镜观察:移植的经Brdu标记的脂肪间充质干细胞大量聚集在损伤的大脑皮质,呈不均匀分布。而对照组大鼠脑组织内未见Brd U免疫荧光显色;(3)Western-blot检测结果显示:实验组经脂肪干细胞静脉移植后,SD大鼠海马区域中的脑源性神经营养因子和周围损伤皮质中的胶质细胞源性神经营养因子的含量明显高于对照组(P<0.05)。而与正常组SD大鼠比较,对照组大鼠脑组织中海马区域中的脑源性神经营养因子含量升高(P<0.05),而皮质周围的胶质细胞源性神经营养因子含量却明显下降(P<0.05);(4)实验结果提示移植的脂肪间充质干细胞向大鼠脑组织的损伤部位分布,并促进了受损脑组织的胶质细胞源性神经营养因子和脑源性神经营养因子分泌,这也可能是对大鼠神经功能恢复的治疗促进作用之一。
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页码:71 / 76
页数:6
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