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JAMA Neurol:阿兹海默症发病前15至20年大脑中就已存在迹象!

2018-01-30 Heather_z727 来宝网

华盛顿大学睡眠专家领导了一个研究小组,发现记忆完整的人脑部扫描显示出更多的临床前证据。

【阿尔茨海默氏症患者记忆丧失前数年生物钟中断】华盛顿大学睡眠专家领导了一个研究小组,发现记忆完整的人脑部扫描显示出更多的临床前证据。

众所周知,阿尔茨海默氏症患者体内生物钟紊乱,觉醒周期可能增加患这种疾病的风险。圣路易斯华盛顿大学医学院的一项新研究表明,这种昼夜节律紊乱可以作为阿兹海默症的临床前证据。

这些发现可能会帮助医生更早地识别出阿尔茨海默氏症的风险人群。这一点很重要,因为阿尔茨海默氏症的损害在临床症状出现前的15年到20年就会在大脑中生根。这项研究发表在《JAMA神经病学》杂志上。

“这并不是因为研究中的人缺乏睡眠,但他们的睡眠往往是零碎的,晚上睡八个小时和白天打盹时一小时一次地睡八小时是大相径庭的。”研究人员还在老鼠身上进行了一项单独的研究,该研究发表在《实验医学杂志》上。研究表明,类似的昼夜节律干扰会加速大脑中淀粉样斑块的发育,而淀粉样斑块与阿尔茨海默氏症有关。

华盛顿大学之前对人类和动物进行的研究发现,淀粉样蛋白的水平在白天和晚上以可预测的方式波动。睡眠过程中淀粉样蛋白水平下降,一些研究表明,当睡眠中断或睡眠不足时,淀粉样蛋白水平会增加。

“在这项新的研究中,我们发现临床前阿尔茨海默病患者的昼夜活动模式更加分散,白天不活动或睡眠时间更长,晚上的活动时间更长。”

原始出处:

Musiek, ES, Bhimasani M, Zangrilli MA,et al. Circadian rest-activity pattern changes in aging and preclinical Alzheimer disease. JAMA Neurology (2018). DOI: 10.1001/jamaneurol.2017.4719.

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    2018-04-03 yinhl1978
  2. [GetPortalCommentsPageByObjectIdResponse(id=2000286, encodeId=cbb6200028667, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Tue Apr 03 19:43:00 CST 2018, time=2018-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=339912, encodeId=8b16339912e5, content=也就是说日夜颠倒,熬夜就。。。, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2018/07/31/88b7a0fe36b7bac9361f6feb3f050afa.jpg, createdBy=674d2404499, createdName=asuraxia, createdTime=Tue Aug 21 12:36:30 CST 2018, time=2018-08-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1465351, encodeId=0ca11465351d8, content=<a href='/topic/show?id=78829e719a0' target=_blank style='color:#2F92EE;'>#阿兹海默症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97719, encryptionId=78829e719a0, topicName=阿兹海默症)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8e96710983, createdName=jiekemin, createdTime=Thu Feb 01 02:43:00 CST 2018, time=2018-02-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=283517, encodeId=17c028351eae, content=学习了新知识, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20201006/4db877c2887649beb09cb5effd0b38c7/916f66edd48a4e77b20ebc3e14b6e45c.jpg, createdBy=141e1980133, createdName=Y—xianghai, createdTime=Tue Jan 30 13:11:06 CST 2018, time=2018-01-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=283508, encodeId=12ea2835089c, content=学习丁, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e5171668917, createdName=坚强007, createdTime=Tue Jan 30 12:06:53 CST 2018, time=2018-01-30, status=1, ipAttribution=)]
    2018-08-21 asuraxia

    也就是说日夜颠倒,熬夜就。。。

    0

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    2018-01-30 Y—xianghai

    学习了新知识

    0

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    2018-01-30 坚强007

    学习丁

    0

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