中文摘要：

目的探讨神经生长因子（ NGF）促进海马胆碱能神经再生与同源盒基因Lhx8之间的关系。方法SD大鼠72只，在制备切割右侧穹隆海马伞模型和NGF侧脑室注射的基础上，分为对照组、切割组、NGF组、切割联合NGF组；Real-time PCR和Western blotting分别检测各组动物海马中Lhx8蛋白的表达变化；免疫荧光技术检测各组动物海马齿状回颗粒下层中胆碱乙酰转移酶（ ChAT ）/Lhx8双标细胞数。结果切割组和NGF组中Lhx8蛋白的表达量较对照组增高，切割联合NGF组增高更为明显，且Lhx8基因表达也增高；NGF组和切割联合NGF组中海马齿状回颗粒下层（ SGZ）中的ChAT/Lhx8双标细胞数也较对照组和切割组明显增多。结论侧脑室注射NGF促进海马胆碱能神经再生与Lhx8的高表达有关。

英文摘要：

Objective To investigate the relationship between the nerve growth factor （ NGF ） induced hippocampal neuroregeneration and homeobox gene Lhx 8.Methods Seventy-two SD rats were divided into control group , transected group, NGF group, transected combined with NGF group after right fimbria-fornix transection and NGF intracerebroventricular injection . Real-time PCR and Western blotting were applied to detect the gene and protein expression of Lhx8 in each group.The choline acetyltransferase （ ChAT）/Lhx8 double labeled cells in subgranular zone （ SGZ） of hippocampus in each group were detected by immunofluorescence .Results The expression of Lhx8 gene and protein in the transected , NGF group and especially in the transected combined with NGF group was obviously higher than in the control group .The number of ChAT/Lhx8 double labeled cells in the NGF group and the transected combined with NGF group was obviously more than in the control group and transected group . Conclusion The hippocampal neuroregeneration which induced by NGF intracerebroventricular injection was associated with the higher expression of Lhx8.