Am J Resp Crit Care:认知正常老年人的OSA严重程度会影响淀粉样蛋白负担!

2017-11-11 xing.T MedSci原创

在认知正常的老年人样本中,OSA与2年随访中淀粉样蛋白负荷增加有关。OSA的睡眠碎片和/或间歇性缺氧可能是潜在的机制。如果证实,OSA的临床干预可能有助于预防认知正常老年人脑脊液中淀粉样蛋白的积聚。

最近的证据表明阻塞性睡眠呼吸暂停(OSA)可能是轻度认知障碍和阿尔茨海默病的危险因素。然而,OSA如何影响阿尔茨海默病的纵向风险还不太清楚。近日,呼吸内科以及重症医学领域权威杂志Am J Resp Crit Care上发表了一篇研究文章,研究人员旨在验证OSA严重程度与认知正常老年人淀粉样蛋白负荷纵向增加之间存在相关性的假设。

在一个为期2年的前瞻性纵向研究中,研究人员招募了认知功能正常的社区老年人。受试者为55-90岁健康志愿者,无抑郁症状,认知功能正常。研究人员测量了受试者脑脊液中β淀粉样蛋白。受试者接受了匹兹堡复合B正电子发射断层扫描。使用家庭睡眠记录仪完成了对受试者OSA的监测。

研究人员使用校正了年龄、性别、BMI和ApoE4状态后的线性回归中发现OSA严重程度指数(lnAHIall [F1,88=4.26,P<0.05 ]和lnAHI4% [F1,87=4.36,P<0.05])与每年脑脊液中Aβ42的变化相关。lnAHIall和lnAHI4%与ADPiB面罩增加无关,最有可能是由于样本量较小所致,尽管对于lnAHIall有一个趋势(分别为F1,28=2.96,P=0.09和F1,28=2.32,n.s.)。

在认知正常的老年人样本中,OSA与2年随访中淀粉样蛋白负荷增加有关。OSA的睡眠碎片和/或间歇性缺氧可能是潜在的机制。如果证实,OSA的临床干预可能有助于预防认知正常老年人脑脊液中淀粉样蛋白的积聚。

原始出处:

Ram A Sharma , et al. Obstructive Sleep Apnea Severity Affects Amyloid Burden in Cognitively Normal Elderly: A Longitudinal Study. AM J RESP CRIT CARE 2017. https://doi.org/10.1164/rccm.201704-0704OC

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    2017-11-20 飘飘爱

    很好

    0

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    2017-11-13 bioon3
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    2017-11-11 李东泽

    是很好的学习材料.不错.以后会多学习.

    0

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    2017-11-11 131****1460

    学习了受益匪浅

    0

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