【摘要】 作者用微波照射大鼠睾丸后,以硝酸镧作示踪剂,于照后1天、7天、14天和70天,用电镜观察20只大鼠血睾屏障的变化。结果发现,血屏睾障的结构和对硝酸镧的通透性均未见异常。更多还原

【Abstract】 It has been reported that infertility resultsfrom damage of the germinal cells by mi-crowave irradiation to the tests. In order toknow whether this result is associated withthe breakdown of the blood-testis barrier.we took lanthanum nitrate as a tracer to ob-serve the Changes, if any, of the tightjunction in the seminiferous tubule underthe electron microscope after microwaveirradiation to the rat testis. Adult rats were killed 1, 7, 14 and 70days respectively after the irradiation. Theresult was compared with that of the con-trols. We found that the lanthanum nitrate wasmostky distributed in the intercellular spacesbetween spermatogonia and Sertoli cell, andsome of the lanthanum was found to extendinwards from this intercellular space for avery short distance and then, to be stoppedby the tight junction. Occasionally, the lan-thanum was also seen above the earlierprimary spermatocytes. All the above findings suggest that theposition and the structure of the tight junc-tion between Sertoli cells in the seminiferoustobules remain unchanged and the blood-testis barrier undamaged.更多还原