【摘要】 用CB－HRP对大鼠后海穴区进行神经节段性分布的研究。在L6～S木水平标记出该穴相关运动神经元（Mn）的树突形成软膜下树突丛和空管膜下树突丛，两者均为嫌高尔基树突。有些远端树突穿越到对侧灰质。在背角和背连合核（DCN，S1～2）区域内CB-HRP标记的初级跨节感觉纤维和标记的前终末纤维可与送行标记的Mn树突汇聚和重叠。电针或免疫注射动物的Mn，其树突软膜下丛和室管膜下丛减少。结果提示后海穴区的神经支配在脊髓内形成传A-DCN整合-传出模式的神经反射回路，相关Mn（L6～S1）可能参与后海穴位作用。更多还原

【Abstract】 The spinal segment distribution of neural innervation related Houhai acupoint in rats hasbeen investigted by using horseradish peroxidase conjugated cholera toxin B subunit (CB-HRP) tracing technique. Spinal motoneurons (Mn) in L6~S1 were labeled retrogradely byCB-HRP, and their features have been characterized: 1) their marginal plexus of the den-drites radially projected to the lateral and/or anterior funiculus and their distal portions.forming subpial dendritic plexus I 2) the medial dendrites ran along the ventral margin of thegray commissure and their distal portions surrounded the central canal, forming asubependymal dendritic plexus. Both of them are Golgi-phobic. Some distal branches of den-drites penetrated to the contralateral gray matter. The dendritic arbors of the labeled mo-toneurons in the group of electro-acupuncture or group of acupoint-inoculation with sheepred blood cells contracted in comparison with that in the normal control group. The primarysensory transganglionic labeled fibers and preterminal fibers revealed by CB-HRP in the dor-sal horn and dorsal commissural nucleus of the spinal cord (L,~S,) converged and overlapedwith the dendrites of retrogradely labeled motoneurons. The results indicated there is a re-flect circuit of afferent-integration-efferent neuro-network in the spinal cord related Houhaiacupoint. The Mns retrogradely labeled by CB-HRP in the L,~S, segments might be in-volved in Houhai acupuncture.更多还原