电针对三叉神经脊束核尾侧亚核胶状质内突触变化的实验形态学研究

Experimental and Ultrastructural Study of Synapses in the Substantia Gelatinosa after Electrical Acupuncture

电针持续刺激相当于“四白”穴区的眶下神经30分钟后，定量地研究了大鼠三叉神经脊束核尾侧亚核胶状质内突触超微结构的变化。结果如下：轴突终末内突触小泡聚集于突触前膜附近，数量减少；突触后膜增厚；线粒体增多。这些改变即可能是针刺镇痛效果的形态学改变。

Ultrastructural changes of synapses in the rat substantia gelationsa of the spinal caudal trigeminalnucleus were quantitatively examined following electrical acupuncture at 'Sibai' for 30 minutes. Vari-ous structural changes were observed: Spherical synaptic vesicles were clustered toward the presynapticmembrane, the number of the vesicles tended to decrease, the. width of the postsynaptic membrane isincreased and mitochondria were also increased in the bouton. These various types of synaptic alter-ations related to boutons are interpreted as the morphological changes induced by the acupuncture inthe region corresponding to 'Sibai'.