CYTOARCHITECTURE AND DENDROARCHITECTURE OF SYMPATHOADRENAL PREGANGLIONIC NEURONS IN RATS——A STUDY WITH CB-HRP  

作　　者：邹建云 万选才 

机构地区：[1]Department of Anatomy, Chinese Academy of Medical Sciences, Beijing 100730, PRC

出　　处：《Science China Chemistry》1990年第1期50-59,129-130,共12页中国科学（化学英文版）

基　　金：Project supported by the National Natural Science Foundation of China.

摘　　要：The cytogrchitecture and dendroarchitecture of sympathoadrenal preganglionic neurons (SAPN) that innervate the adrenal medulla have been studied in adult rats. Retrograde transport of choleragen subunit B horseradish peroxidase conjugate (GB-HRP) injetted into the left adrenal medulla resulted in the labelling of SAPN in the ipsilateral intermediate zone from T1 to L1 segments. Four subnuclei of SAPN were distinguished and located in ILP, ILF, IC and ICPe of the spinal cord respectively. The dendritic trees of neurons in ILP exhibited dendritic patterns with extension oriented longitudinally and mediolaterally. The present findings provide detailed descriptions of the somatic structure and accompanying dendritic trees of SAPN. The observations also include anatomical evidence that two systems of circuits may exist in regulating the actiVities of SAPN; one is the classic core circuits system which mainly received the inputs from fibers in parallel direction with longitudinal dendrites in ILP and the other is the paralateral circuits system which chiefly received the inputs from fibers iu perpeudicular direction with radial dendrites in white matter.The cytogrchitecture and dendroarchitecture of sympathoadrenal preganglionic neurons (SAPN) that innervate the adrenal medulla have been studied in adult rats. Retrograde transport of choleragen subunit B horseradish peroxidase conjugate (GB-HRP) injetted into the left adrenal medulla resulted in the labelling of SAPN in the ipsilateral intermediate zone from T1 to L1 segments. Four subnuclei of SAPN were distinguished and located in ILP, ILF, IC and ICPe of the spinal cord respectively. The dendritic trees of neurons in ILP exhibited dendritic patterns with extension oriented longitudinally and mediolaterally. The present findings provide detailed descriptions of the somatic structure and accompanying dendritic trees of SAPN. The observations also include anatomical evidence that two systems of circuits may exist in regulating the actiVities of SAPN; one is the classic core circuits system which mainly received the inputs from fibers in parallel direction with longitudinal dendrites in ILP and the

关 键 词：SYMPATHETIC preganglionic neurons CB-HRP ADRENAL MEDULLA dendrites. 

分 类 号：O6[理学—化学]