Department of Medical Physics, Babol University of Medical Sciences, Babol, Iran.
J Magn Reson Imaging. 2009 Nov;30(5):1047-51. doi: 10.1002/jmri.21853.
To investigate protective effects of vitamins E and C against 1.5 Tesla static magnetic fields in magnetic resonance imaging (MRI) on spermatogenesis parameters was the main goal of the present study.
Ninety-two mature male rats were exposed to 1.5 T MRI static magnetic fields for 30 min with or without vitamins C and E alone or in combination. Animals were sacrificed and the testicular tissues were anatomically sectioned, stained, and the number of germ cells and the diameters of sperm ducts were measured and compared with sham and controls.
Results showed that compared to sham, static magnetic fields may reduce the germ cell count (P = 0.000) and sperm ducts diameters (P = 0.020), and vitamins C and E could modify the reduction in germ cell count (P = 0.019) but they did not show any protective effect on sperm duct diameter reduction (0.647).
The protective effects of vitamins C and E are different, and depend on the type of effects. It seems that the modifying effects of vitamins are to be additive, but vitamin E plays a more important role than vitamin C against the static magnetic field on spermatogenesis parameters in clinical MRI.
本研究旨在探讨维生素 E 和 C 对磁共振成像(MRI) 1.5T 静磁场致生殖细胞参数损伤的保护作用。
92 只成熟雄性大鼠分别接受 1.5T 静磁场 30min 照射,同时或分别联合维生素 C 和 E 照射,假照组和对照组不接受照射。照射后处死动物,解剖取材,行组织学染色,比较各组生精细胞计数和各级精曲小管直径。
与假照组相比,静磁场照射可降低生精细胞计数(P=0.000)和各级精曲小管直径(P=0.020),维生素 C 和 E 可部分改善生精细胞计数减少(P=0.019),但对精曲小管直径减少无保护作用(P=0.647)。
维生素 C 和 E 的保护作用不同,取决于作用类型。维生素的改善作用似乎是累加的,但维生素 E 对生殖细胞参数的保护作用比维生素 C 更为重要。在临床 MRI 中,维生素 E 可能对静磁场致生殖细胞损伤具有保护作用。