靳三针疗法对窒息脑瘫幼鼠神经干细胞增殖与分化的实验研究

目的]观察靳三针疗法对脑瘫大鼠神经干细胞(NSCs)增殖与分化的影响.方法]选用SD新生大鼠,随机分为假手术组、模型组、靳三针疗法治疗组(治疗组,针刺百会、颞Ⅰ针、曲池、内关、足三里、涌泉),模型组与治疗组均采用结扎单侧颈总动脉法复制脑瘫大鼠模型,其中治疗组于手术后24 h开始针刺,共14 d.各组于造模后15 d处死大鼠制备脑组织提取液.另取健康SD新生大鼠,取大脑海马部位,分离、扩增NSCs,采用免疫细胞化学法检测NSCs特征性标记Nestin与Brdu表达,以鉴定培养的细胞及体外分化能力.培养细胞分为正常对照组,低、高浓度组(分别加入100、300μL/mL.的治疗组脑组织提取液),培养1、3、5 d后,采用免疫细胞化学法和免疫荧光法检测各组神经元样细胞和星形胶质样细胞的特征性标志物神经丝蛋白(NF)和胶质纤维酸性蛋白(GFAP)的表达,观察各组NSCs分化情况.采用流式细胞术检测各组NF、GFAP阳性细胞数,观察脑组织提取液促进NF、GFAP表达的时效和量效关系.结果]扩增后的细胞球Nestin与Brdu均呈阳性,证实体外培养的细胞为NSCs,并处于分裂增殖旺盛期.细胞培养1、3、5 d后,NF、GFAP染色均呈阳性,且正常对照组阳性细胞少,低、高浓度组明显增多,呈浓度依赖性,表明NSCs已分化为神经元细胞和星形胶质细胞.同一时间段内低、高浓度组NF、GFAP阳性细胞数均较正常对照组显著增高(P<0.05或P<0.01),高浓度组在培养1、3、5 d后,NF、GFAP阳性细胞数也显著增高(P<0.05或P<0.01),表明治疗组脑组织提取液可促进NF、GFAP表达,且呈一定的量效和时效关系.结论]靳三针疗法治疗脑瘫可能是通过促进NSCs的增殖和定向分化,从而达到修复脑损伤的目的.

Effect of Jin's Three-needle Manipulation on Proliferation and Differentiation of Neural Stem Cells in Immature Rats with Asphyxia-induced Cerebral Palsy

Objective To observe the influence of Jin's three-needle manipulation(JTM) on neural stem cells(NSCs)in immature rats with asphyxia-induced cerebral palsy and to investigate its possible therapeutic mechanism.Methods Rats were randomized into sham-operation group,model group,and JTM group(acupuncturing on acupoints of Baihui,No.1 of temporal tri-points,Quchi,Neiguan,Zusanli and Yongquan).Cerebral palsy model was established by ligation of unilateral common carotid artery.Acupuncture was performed 24h after ...