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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。结果颈上交感神经节组在同侧C2～C5脊神经节中出现荧光金标记神经元,以C3和C4脊神经节中标记神经元为多;颈下交感神经节组在同侧C5～C8脊神经节中出现标记神经元,以C6和C7为多。结论颈交感神经节和颈脊神经节之间存在直接的神经纤维联系,且有一定的分布规律,这些联系可能是颈性眩晕的神经解剖学基础。
Objective To analyze the nerve fiber connection between cervical sympathetic ganglia and cervical spinal ganglia and to explore the basis of neural reflex in the pathogenesis of cervical vertigo. Methods 48 New Zealand white rabbits were randomly divided into the sympathetic ganglia group and the inferior cervical sympathetic ganglia group and the corresponding control group. Fluorescent gold solution or saline was injected into the sympathetic ganglia of the neck or neck, respectively, After 8 days, bilateral cervical spinal ganglia C2 ~ C8 were removed and frozen sections were prepared and observed by fluorescence microscopy. Results In the sympathetic ganglia group, fluorescent gold-labeled neurons were found in the C2 ~ C5 spinal ganglion on the ipsilateral side, and more neurons were labeled in the C3 and C4 spinal ganglion. The inferior cervical sympathetic ganglion was located on the ipsilateral C5 ~ C8 spinal ganglia In the presence of labeled neurons, with C6 and C7 as much. Conclusion There are direct nerve fiber connections between the cervical sympathetic ganglia and the cervical ganglion neurons, with certain distribution rules. These connections may be the neuroanatomical basis of cervical vertigo.