Zhen Ci Yan Jiu. 1992 ; 17(3): 201-6.

[The effect of stimulating the auricular liver-gall acupoint with electrode on synaptic of nucleus originis dorsalis nervi vagi in rabbits]

Li Y, Tang X, Zhang Y, Wu F.

Department of Biology, Nanjing University, Jiangsu.

In this experiment, several ultrastructural parameters of Gray's type I synapses in nucleus originis dorsalis nervi vagi were observed and quantitatively analysed by use of electron microscopy in condition gallbladder contraction by stimulating the auricular liver-gall acupoint of rabbits with electrode. It was found that the synaptic contact length was increased extremely significantly, and the postsynaptic thickening length lengthened significantly. There were no changes in the area and the perimeter of presynaptic bouton as well as synaptic vesicle density. The percentages of synaptic perforation and negative synaptic interface tended towards increase. But there were no differences in synapses of positive and straight interface. It is suggested that the nucleus is involved in the regulation of gallbladder activity induced by auricular acupoint stimulation.