They believe the effect could be caused by a lack of melatonin, the sleep hormone, which is far lower among people who sleep in the daytime.
科学家认为,这种效应可能是由褪黑激素(睡眠荷尔蒙)的缺乏引发的,在白天睡觉的人群当中,这种激素水平要低得多。
Dr Parveen Bhatti, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA, said if awake at night the body has ‘reduced capacity to repair and clear oxidative DNA damage.’
美国华盛顿州西雅图的福瑞德哈金森肿瘤研究中心的帕尔文•巴提博士说,如果夜里醒着,身体就会“降低修复和清除DNA氧化损伤的能力。”
“Over time, this accumulation would likely increase the risk of cancer across multiple sites as has been observed among shift workers,” she added.
她补充道:“长此以往,累积的损伤就会增加身体多处的癌症风险,这些都是在倒班工人身上观察到的。”
The study tested 50 night shift workers for levels of 8-OH-dG - a chemical which is produced when DNA is repaired. They then tested them again when they were working days, and found levels jumped by 300 percent.
该研究检测了50个夜班工人体内的8-OH-dG——人体修复DNA损伤时产生的化学物质。然后研究人员又在这些工人上白班时给他们做了检测,发现这种化学物质的分泌量增加了300%。
【研究:上夜班会造成DNA损伤并引发癌症】相关文章:
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