论文部分内容阅读
本研究用微波(2450兆周)照射兔阴囊及睾丸,使阴囊皮肤温度升至41°～42℃,维持20分钟。用电镜观察照射后30分钟至4个月之间不同时间阶段对精子形成的影响。30分钟至1小时后,高尔基期、头帽期、顶体期及成熟期的精子细胞已出现形态学的改变。30～60天后退变的成熟期精子细胞增多,8～4个月后精子细胞一般恢复正常,各期精子细胞对微波都很敏感。损伤改变主要见于顶体、顶体下间隙、核、尾部线粒体鞘、纤维鞘、外致密纤维及顶体后致密膜。早期精子细胞的平滑型内质网和核膜间隙扩大及空泡化也经常见到。本文所见微波所致精子细胞的超微结构改变,在许多方面与超声及实验性隐睾所致的改变相似。
In this study, rabbit scrotum and testis were irradiated with microwave (2450 MB) to raise the scrotal skin temperature to 41 ° ~ 42 ° C for 20 minutes. The effects of different time periods between 30 minutes and 4 months after irradiation on spermatogenesis were observed by electron microscope. After 30 minutes to 1 hour, the morphological changes of spermatids in the Golgi stage, head-cap stage, acrosome stage and maturation stage have occurred. After 30 to 60 days degenerative spermatogenic cells increased maturity, 8 to 4 months after the sperm cells returned to normal, the sperm cells are very sensitive to the microwave. Changes in injury mainly seen in the acrosome, acrosome space, nucleus, tail mitochondrial sheath, fibrous sheath, dense outer dense fibers and acrosome dense membrane. Smooth sperm endoplasmic reticulum and nuclear membrane expansion and vacuolization of early sperm cells are also frequently seen. The ultrastructural changes seen in this paper of microwave-induced sperm cells are in many ways similar to the changes caused by ultrasound and experimental cryptorchidism.