输精管结扎后家犬附睾超微结构的变化

用电镜观察输精管结扎一年后4只家犬附睾体部的超微结构,与正常对照组比较可见其附睾体部粘膜上皮细胞间隙扩大、连接复合体松散;主细胞顶部胞质中吞饮小泡数量增多,滑面内质网普遍扩张,其内含物电子密度增加,基底部胞质出现多量小型小泡,趋向基底面并形成胞吐现象。实验组动物附睾尾部的光镜观察亦发现精液囊肿和精子肉芽肿形成,并见有精子穿越附睾管壁的移行过程。对于上述超微结构的变化对附睾生殖生理活动的影响进行了讨论。

Alteration in the Ultrasturcturo of the Dog's Epididymis after Vasoligation

The present study was made on 10 healthy adult male dogs. A vasoligation was performed on 4 of them (experimental group); other 6 animals were not treated (control group). One year after the operation, the specimens for experiments were observe,] with electron microscope, and the results showed that in experimental group, the intercallular spaces of mucosa epithelium of corpus epididymidis enlarged; the junctional complex was loosened; the pinocytotic vesicles in apical cytoplasm of the principal call increased, the cisterns of smooth endoplasmic reticulum enlarged; the small vesicles in the cytoplasm of the principal cells near basement membrane increased and exocytosis were detected. The cauda epididymidis were examined with light microscope. Sperm cysts and granuloma were found in 3 of 4 experimental animals and the process that the sperm crossed the wall of the epididymis was also found.