Zhang J D, Wang B R, Li H M, Li J S
Fourth Military Medical University, Xian, China.
J Hirnforsch. 1991;32(5):641-6.
The projection from the masseter to the subnucleus oralis of the spinal trigeminal nucleus (Vo) and adjacent parvicellular reticular nucleus (PCRt) was studied with retrograde and transganglionic transport of horseradish peroxidase (HRP) combined with fluorescent double labeling method. The labeled axons and terminals within the medulla showed a specific distribution. The field of labeling formed a continuous band from rostro-laterally to caudo-medially. At the level of caudal Vo the labeling region became the most expanded in the medulla, which occupied dorso-medial Vo (Vodm) and adjacent PCRt about half by half. The ratio of masseter primary afferent neurons in the mesencephalic trigeminal nucleus (Vme) to that in the trigeminal ganglion (TG) was found to be 7.7-8.5:1 following injection of HRP into the masseter nerve. However, the proportion between the Vme and the TG neurons which build up the pathway from the masseter to the Vodm and the adjacent PCRt was 8.7-10:1, revealed by means of fluorescent double labeling when different tracers were applied at the peripheral and central targets.
采用辣根过氧化物酶（HRP）逆行和顺行跨节运输结合荧光双标记法，研究了咬肌至三叉神经脊束核口部亚核（Vo）及相邻的小细胞网状核（PCRt）的投射。延髓内标记的轴突和终末呈现出特定的分布。标记区域从嘴侧外侧向尾侧内侧形成一条连续带。在尾侧Vo水平，标记区域在延髓内扩展最为明显，约占据背内侧Vo（Vodm）和相邻PCRt的一半。将HRP注入咬肌神经后，发现中脑三叉神经核（Vme）中咬肌初级传入神经元与三叉神经节（TG）中咬肌初级传入神经元的比例为7.7 - 8.5:1。然而，当在周围和中枢靶点应用不同示踪剂时，通过荧光双标记法显示，构成从咬肌至Vodm和相邻PCRt通路的Vme和TG神经元之间的比例为8.7 - 10:1。
