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疑似外星人:揭秘早衰儿童的悲惨生活(组图)(3)
2007-09-05 16:41:02 【 发表评论
    
    
    研究人员利用患上早衰症的小鼠和早衰症患儿的细胞进行了分析,比较两者及正常细胞衰老速度、染色体异常情况、基因损伤反应和修复功能等。结果发现,早衰症患儿比小鼠的细胞更易衰老,并且其染色体更易丢失或断裂,反映基因损伤增加。此外,核纤层蛋白A基因异常会影响DNA损伤修复,造成基因组不稳定,使衰老过程加快,导致未老先衰
    
疑似外星人:揭秘早衰儿童的悲惨生活(组图)

    
疑似外星人:揭秘早衰儿童的悲惨生活(组图)

    
疑似外星人:揭秘早衰儿童的悲惨生活(组图)

    
    
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