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以2450兆周的微波照射健康成年雄兔的阴囊及睾丸,使阴囊皮肤温度升至41—42℃。维持20分钟。用电镜观察照射后不同时间(30分钟至4个月)的曲细精管上皮的改变。照射后30分钟至1小时的曲细精管上皮,见初级精母细胞、早期和晚期精子细胞有明显的形态学改变,3—4个月后则普遍恢复正常。精原细胞于照射12小时后见有改变,60天后恢复正常。初级精母细胞和精子细胞的超微结构损伤较精原细胞严重。精原细胞、初级精母细胞和早期精子细胞的超微结构损伤均表现为滑面内质网与核膜间隙扩张、线粒体肿胀、核膜局部破坏,最终细胞崩解。精子细胞的改变主要表现在顶体系统、核、尾部的线粒体鞘和纤维鞘上。文章对微波损伤生精细胞的作用机理进行了讨论。
The scrotum and testis of healthy male rabbits were irradiated with 2450 MB microwaves to raise the scrotal skin temperature to 41-42 ° C. Maintain for 20 minutes. Changes in the seminiferous tubules of the seminiferous tubules at different time points after irradiation (30 minutes to 4 months) were observed with electron microscopy. The seminiferous tubule epithelium, 30 minutes to 1 hour after irradiation, see primary spermatocytes, early and late spermatogenic cells have obvious morphological changes, generally returned to normal after 3-4 months. Spermatogonial cells in 12 hours after irradiation see a change, returned to normal after 60 days. The ultrastructural damage of primary spermatocytes and sperm cells is more severe than that of spermatogonia. The ultrastructural damage of spermatogonia, primary spermatocytes and early spermatocytes all showed the sliding endoplasmic reticulum and nuclear membrane gap expansion, the swelling of mitochondria, the partial destruction of the nuclear membrane and the final cell disintegration. Sperm cell changes are mainly manifested in the acrosome, nuclear, caudal mitochondrial sheath and fiber sheath. The article discusses the mechanism of microwave-injured spermatogenic cells.