电极刺激兔耳肝胆穴对迷走背核突触亚微结构的影响

<正> 耳针的应用早就受到重视,对多种疾病的临床观察已肯定了耳针的疗效。采用耳压法治疗胆石症也有显著的临床效果,近年来的病例日益增多。然而,其作用

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

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.