Bae Y C, Nagase Y, Yoshida A, Shigenaga Y, Sugimoto T
Department of Oral Anatomy, Kyungpook National University School of Dentistry, Korea.
Brain Res. 1993 Mar 19;606(1):175-9. doi: 10.1016/0006-8993(93)91588-j.
The central axon of a primary afferent neuron that responded to light mechanical stimulation of the lower premolar teeth in a fast adapting fashion was intra-axonally injected with horseradish peroxidase in the cat. The labeled terminals within the rostrodorsomedial (Vo.r) and dorsomedial (Vo.dm) parts of subnucleus oralis were examined electron microscopically. The labeled ending had pale axoplasm, contained clear spherical synaptic vesicles, and formed multiple synapses with dendrites and/or unlabeled axonal endings with pleomorphic vesicles (P-endings). In these synaptic contacts, the labeled primary ending was presynaptic to dendrites and postsynaptic to P-endings. Labeled endings simultaneously synapsing with both dendrites and P-endings were more frequent in Vo.dm (28%) than in Vo.r (8.3%).
在猫体内，对下前磨牙进行轻触觉刺激时以快速适应方式做出反应的初级传入神经元的中枢轴突，经轴内注射辣根过氧化物酶。对延髓吻侧背内侧部（Vo.r）和背内侧部（Vo.dm）内标记的终末进行了电镜检查。标记的终末轴质浅淡，含有清亮的球形突触小泡，并与树突和/或具有多形性小泡的未标记轴突终末（P终末）形成多个突触。在这些突触联系中，标记的初级终末对树突为突触前，对P终末为突触后。在Vo.dm（28%）中，同时与树突和P终末形成突触的标记终末比在Vo.r（8.3%）中更常见。
