摘要
目的 :观察中枢去甲肾上腺素 (NE)与海马突触形态之间的关系。方法 :通过 6 -OHDA损毁大鼠双侧背去甲肾上腺素束来建立海马内去甲肾上腺素能系统损伤大鼠模型 ,于建模前后对其进行迷宫检查及类P3测定 ,然后对大鼠海马CA3区多形层突触界面的结构参数进行定量分析。结果 :突触后膜致密物质厚度明显变薄 ,突出界面曲率减小、穿孔性突触的比例也有不同程度降低 ,突触间隙宽度加大。结论 :海马内NE的正常水平对维持突触界面超微结构是必要的。
AIM: To observe the relationship between noradrenaline and the synaptic configuration in rat hippocampus CA3 area. METHODS: Noradrenergic system injured models were produced by injecting 6-hydroxydopamine into rats' bilateral dorsal noradrenergic bundle. Then Y-type maze tests and elicitation of P3-like were carried out respectively before and after the model was established. The parameters of synaptic configuration in the hippocampus CA3 areas were also analyzed quantitatively. RESULTS: The decreases in the thickness of postsynaptic density material, the curvature of synaptic interface and the occurrence of perforated synapses, and the increase in the width of synaptic cleft were observed. CONCLUSION: The normal noradrenalin level in hippocampus is necessary to maintain the normal synaptic interface ultrastructure in hippocampus CA3 area.
出处
《中国病理生理杂志》
CAS
CSCD
北大核心
2004年第6期994-997,共4页
Chinese Journal of Pathophysiology
基金
广东省卫生系统"五个一科技兴医工程"(No .0 4 345 )
国务院侨办重点课题科研基金 (No.9395 0 6 )资助项目
