根据近几年来的有关文献,综述了部分稀有金属的致癌和抗癌功能及其作用机制.稀有金属离子主要通过(1)降低致癌因子的诱变性;(2)调节细胞的增殖与凋亡选择性抑制癌细胞生长;(3)调节机体免疫系统,激活机体免疫防卫功能;(4)拮抗肿瘤细胞内致癌因子的增长等起到预防和抑制癌症的作用.而金属致癌作用主要包括DNA损伤和细胞转化等负面的生物效应.
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