逆行标记法研究颈脊神经节至交感神经节的神经反射通路

目的 分析颈交感神经节和颈脊神经节之间的神经纤维联系,探讨颈性眩晕发病的神经反射基础.方法 48只新西兰兔随机分为颈上交感神经节组和颈下交感神经节组及相应对照组,于颈上或颈下交感神经节内分别注入荧光金溶液或生理盐水,分别于存活4、8d后取出双侧颈脊神经节C2～C8,制备冷冻切片并进行荧光显微镜观察分析.结果 颈上交感神...

Neural reflex pathway from cervical spinal ganglia to cervical sympathetic ganglia: an in vivo retrograde labeling in the rabbit

Objective To study the neural connections between cervical sympathetic ganglia and cervical spinal ganglia, and explore the neuroanatomical basis of the pathogenesis of cervical vertigo. Methods New Zealand rabbits were randomly divided into superior, inferior cervical sympathetic ganglia and control groups. Fluoro-gold (FG) or normal saline was injected into the superior or inferior cervical sympathetic ganglia. At 4 or 8 days after injection, the bilateral spinal ganglia were removed, cryo-sectioned and observed under a fluorescence microscope. Results FG labeled neurons were found in the ipsilateral CSUB>2/SUB> -CSUB>5/SUB> spinal ganglia and more FG labeled neurons were observed in CSUB>3/SUB> and CSUB>4/SUB> spinal ganglia in the superior cervical sympathetic ganglia group. In the inferior cervical sympathetic ganglia group, there were FG labeled neurons in the CSUB>5/SUB> -CSUB>8/SUB> spinal ganglia and more FG labeled neurons were found in CSUB>6/SUB> and CSUB>7/SUB> spinal ganglia. Conclusion Neural reflex arch between cervical spinal and cervical sympathetic ganglia was found, which may provide an important neuroanatomical basis for the cervical vertigo.