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【世界核新闻网站2012年5月16日报道】美国麻省理工学院(MIT)近日公布了一份题为“综合分子分析表明在受到约400倍天然本底剂量连续照射的老鼠体内未发现脱氧核糖核酸(DNA)损伤”的研究报告,其中列出了一项可对现有辐射防护导则形成挑战的研究成果,即受到长时间低剂量照射的老鼠没有表现出DNA受到损害的迹象。活细胞经常受到不同来源的多种电离辐射的轰击,其DNA可能会因此受到损害。除非通过自我修复机制修复这种损害,否则将会导致细胞功能障碍或者产生恶性肿瘤(即癌症)。
(World Nuclear News Web Site May 16, 2012) Massachusetts Institute of Technology (MIT) recently released a report entitled “Comprehensive Molecular Analysis showed that in about 400 times the natural background dose of continuous exposure of mice was not found in vivo DNA Damage, ”which outlines a study that could challenge existing guidelines for radiation protection, in which mice exposed to prolonged, low-dose radiation did not show signs of DNA damage . Living cells are often bombarded by various sources of ionizing radiation and their DNA can be compromised. Unless this damage is repaired by a self-healing mechanism, it can cause cellular dysfunction or malignancy (ie, cancer).