Behne D, Duk M, Elger W
J Nutr. 1986 Aug;116(8):1442-7. doi: 10.1093/jn/116.8.1442.
In rats fed a diet with 0.25 mg Se/kg the testis selenium content rose during maturation. The value in 4-mo-old animals (7.0 mg Se/kg dry mass; 0.9 mg Se/kg wet mass) was six times higher than that in 20-d-old weanling rats. By comparison, the selenium content in the main selenium pools, muscle and liver, remained unchanged and rose by half, respectively. Due to the increased selenium requirement of the testis during its pubertal maturation the amount of selenium taken up by the male gonads was 50% of the amount deposited in muscle and liver, whereas before and after that period it was about 10%. Feeding animals a low vitamin E diet had no effect on the rise in testis selenium. Glutathione peroxidase activity was twice as high in 4-mo-old animals as in weanling rats. Because only a small percentage of the element in the male gonads was bound to the enzyme, the rise in testis selenium must have been due to other selenium compounds. The selenium content of the spermatozoa was about 21 mg Se/kg dry mass, which by far exceeded the level of this element in other compartments of the rat. The increase in testis selenium content coincided with the beginning of spermatogenesis, and it may therefore ensure the supply of adequate amounts of the element for the spermatozoa.
在喂食含0.25毫克硒/千克饲料的大鼠中，睾丸硒含量在成熟过程中上升。4月龄动物的睾丸硒含量（干重7.0毫克硒/千克；湿重0.9毫克硒/千克）是20日龄断奶大鼠的6倍。相比之下，主要硒储存库肌肉和肝脏中的硒含量分别保持不变和上升了一半。由于睾丸在青春期成熟过程中对硒的需求增加，雄性性腺摄取的硒量占沉积在肌肉和肝脏中硒量的50%，而在此期间之前和之后这一比例约为10%。给动物喂食低维生素E饮食对睾丸硒含量的上升没有影响。4月龄动物的谷胱甘肽过氧化物酶活性是断奶大鼠的两倍。由于雄性性腺中只有一小部分元素与该酶结合，睾丸硒含量的上升一定是由于其他硒化合物。精子的硒含量约为21毫克硒/千克干重，远远超过大鼠其他组织中的该元素水平。睾丸硒含量的增加与精子发生的开始同时出现，因此它可能确保为精子提供足够量的该元素。
