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睡眠其实是帮助“洗脑”,科学家发现大脑如何清除毒素

    The importance of sleep is self-evident, and a study published in the journal Science shows that sleep can help "brainwash" to remove toxins from the brain.

    睡眠的重要性不言可喻,而一项刊登在《科学》期刊的研究显示,睡眠可以帮助“洗脑”,以清除大脑中的毒素。

    According to Wired magazine, a study conducted by Laura Lewis, a professor of biomedical engineering at Boston University, found that when a person falls asleep into a deep sleep phase during non-rapid eye movements, brain neurons stop discharging, so they don't need So much oxygen, and this means less blood flows to the brain, when cerebrospinal fluids flow in and fill the space left by the blood.

    根据《连线(Wired)》杂志报导,由波士顿大学生物医学工程教授Laura Lewis主持的研究发现,当人睡着进入非快速动眼期的深度睡眠阶段,脑神经元会停止放电,因此不需要那么多的氧气,而这意味更少的血液流向大脑,此时脑脊髓液(cerebrospinal fluid)会涌入,填补血液留下的空间。

    In fact, a study in 2013 showed that in rodents sleeping, in vivo toxins such as beta-amyloid may be eliminated, and this toxin may cause Alzheimer's disease. To understand how these toxins were cleared, Lewis's research team recruited subjects to fall asleep in a magnetic resonance imaging (MRI) machine, observing the blood oxygen levels in the brain and the amount of cerebrospinal fluid flowing into and out of the brain.

    事实上,2013年一项研究就表明,在囓齿动物睡觉时,体内诸如β-类淀粉蛋白质(beta amyloid)的毒素可能被清除,而这种毒素可能会导致阿兹海默症。为了了解这些毒素如何被清除,Lewis的研究团队招募受试者躺在核磁共振成像(MRI)的机器中入睡,观察受试者大脑的血氧水平,以及流入和流出大脑的脑脊髓液量。

纽约时报中英文网 www.qqenglish.com

    According to Maiken Nedergaard, a neuroscientist at the University of Rochester and a brain researcher in 2013, Lewis's research shows that sleep is more than just relaxation. It also has a unique function. When people are awake, brain neurons It will not be closed at the same time. Therefore, the degree of blood loss in the brain is not sufficient to circulate a large amount of cerebrospinal fluid in the brain and to remove all accumulated metabolic by-products such as β-amyloid protein.

    罗彻斯特大学的神经科学家,同时也是主持2013年老鼠大脑研究的Maiken Nedergaard表示,Lewis的研究表明睡眠不仅仅是放松而已,还具有一种独特的功能,当人们清醒的时候,脑神经元并不会同时关闭。因此,大脑血液下降的程度不足以使大量的脑脊髓液在脑部循环,并清除所有积聚的代谢副产物,例如β-类淀粉蛋白质。

    In addition to marking the initial body's ability to clear toxins from the brain during sleep, this study may open new avenues for the treatment and prevention of neurodegenerative diseases such as Alzheimer's.

    这项研究除了标志初身体如何在睡眠时清除大脑中的毒素,并且可能为治疗和预防像阿兹海默症这样的的神经退化性疾病开辟新的途径。

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