犬脊神经节中躯体—内脏传入神经元的汇聚:牵涉痛及针刺效应机理的研究

Study on Somato Visceral Sensory Neurons Convergence inDorsal Root Ganglia of Dog With Double Fluorescence Labelling Technique.

多年来,临床实践中的牵涉痛现象,以及针刺体表穴位对某些脏器的活动或疼痛能产生影响或抑制等,在神经学中未能得到确切的形态学解释。近几年来,由于形态学研究方法的创新,揭开了对其机理研究的新纪元,正采用辣根过氧化物酶(简称HRP)、

To study the possibility of somatovisceral convergence in dorsal root ganglion (D RG) of dog. propidium iodide (PI) Was injected into the left T11-13 nterccstel rerves, and bibenzimide (Bb) into the left greater splanchnic nerve. The T6-L3 spinal cord segments and DRG Were removed after perfusing the dog throug heart, and their frozen sections observed individually. Singlelabelled neurons appeared in T(?)-L1 left DRG; double-1 abe lled neurons Were odserved in T10-13 left DRG, Which accounted for approximately 2% of all lab elled neurons. The result provide evidences for the hypothesis of prespinal convergence and explanations for the phenomenon of referred pain as well as the effect of point acupuncture anesthesia.