Light and electron microscopy studies of the ulnar, saphenous, and caudal cutaneous sural nerves of the dog.
Light and electron microscopy studies of the ulnar, saphenous, and caudal cutaneous sural nerves of the dog.
复制标题
狗的尺神经、隐神经和尾部皮肤腓肠神经的光学和电子显微镜研究。
作者：
O. Illanes;Julie Henry;G. Skerritt
取正常年轻成年比格犬尺神经、隐神经和腓肠神经横切面的特定水平，在光镜和电子显微镜下进行定性和定量检查。本研究的目的是为该物种周围神经疾病的未来研究提供基线信息。系统取样技术用于测定神经成分（即无髓鞘轴突、雪旺细胞和成纤维细胞核）。在所有神经样本中，无髓鞘轴突的平均大小分布为单峰，大多数轴突的直径为0.4-1.1微米。在这个范围内，最大直径峰的位置有轻微的个体和神经间的差异。尺骨神经掌支的雪旺细胞核平均密度（数目/mm2）为841/mm2，尾侧腓肠皮神经的雪旺细胞核平均密度为1223 /mm2，几乎是成纤维细胞核平均密度的4倍。在每只动物和几乎每条神经中，都发现了一些异常；在评估狗的周围神经时，这些都应该记住。
Transverse sections of the ulnar, saphenous, and sural nerves taken at specific levels in normal, young-adult beagle dogs were examined qualitatively and quantitatively at both the light and electron microscopic levels. The aim of this investigation was to provide baseline information for future studies of peripheral nerve disease in this species. A systematic sampling technique was used for the determination of nerve components (i.e., unmyelinated axons and Schwann cell and fibroblast nuclei). In all nerves sampled, the average size distribution for unmyelinated axons was unimodal, and most of the axons were 0.4-1.1 micron in diameter. Within this range, there were slight individual and nerve-to-nerve variations in the location of the largest diameter peak. The mean densities of Schwann cell nuclei (numbers/mm2) ranged from 841/mm2 in the palmar branch of the ulnar nerve, to 1,223/mm2 in the caudal cutaneous sural nerve, being nearly four times the average density or fibroblast nuclei. In every animal and in almost every nerve, a few abnormalities were found; and these should be kept in mind when assessing peripheral nerves in the dog.