Tomney P A, Hopkins D A, Armour J A
Brain Res Bull. 1985 May;14(5):443-52. doi: 10.1016/0361-9230(85)90023-1.
In 11 dogs fluorescent retrograde tracers were injected into physiologically identified left-sided sympathetic cardiopulmonary nerves. When two different ipsilateral cardiopulmonary nerves were injected, labeled cells from each injected nerve had overlapping distributions in the middle cervical and stellate ganglia. Most retrogradely labeled neurons were located in the middle cervical ganglion and cranial pole of the stellate ganglion. Following the injection of two different tracers into two different nerves, some neurons in the middle cervical ganglion were retrogradely labeled with two tracers. Double-labeled neurons were rarely found in the stellate ganglion. There were areas within the ganglia in which labeled neurons projected predominantly to one cardiopulmonary nerve. In the thoracic autonomic nervous system Fast Blue was transported most effectively. Bisbenzimide was not transported as well as Fast Blue and Nuclear Yellow was very poorly transported in cardiopulmonary nerves. The results demonstrate that some efferent postganglionic sympathetic neurons project axons into at least two different cardiopulmonary nerves and that an anatomical substrate for axo-axonal reflexes exists in the thoracic sympathetic nervous system.
在11只犬中，将荧光逆行示踪剂注入经生理鉴定的左侧交感心肺神经。当向两条不同的同侧心肺神经注射示踪剂时，每条注射神经的标记细胞在颈中神经节和星状神经节中的分布相互重叠。大多数逆行标记的神经元位于颈中神经节和星状神经节的颅极。在向两条不同神经注射两种不同示踪剂后，颈中神经节中的一些神经元被两种示踪剂逆行标记。在星状神经节中很少发现双标记神经元。神经节内存在一些区域，其中标记神经元主要投射到一条心肺神经。在胸段自主神经系统中，快蓝的运输效果最佳。双苯甲酰胺的运输效果不如快蓝，核黄在心肺神经中的运输效果非常差。结果表明，一些节后交感传出神经元将轴突投射到至少两条不同的心肺神经中，并且胸段交感神经系统中存在轴突-轴突反射的解剖学基础。
