JAMA Neurology-PET检测Tau蛋白预测认知衰退,优于常规指标

2021-07-24 Freeman MedSci原创

Tau蛋白PET,预测认知衰退,优于常规指标

对阿尔茨海默病(AD)患者的准确预后对于患者和家属计划未来、减少不确定性、提高安全性和优化医疗决策至关重要。鉴于在体外和尸检中观察到的tau病理学和认知的主要相关因素(例如,神经元损失和突触功能障碍)之间的密切联系,关于大脑tau病理学程度的体内信息可能会改善对未来认知能力下降的预测。

各种正电子发射断层扫描(PET)配体已经被开发出来,它们与AD中形成的tau聚集体有很高的亲和力。 tau PET保留的程度和模式与受脑萎缩和新陈代谢低下影响的区域强烈重叠,并与同期的认知表现相关。

此外,在区分AD痴呆和非AD神经退行性疾病(如额颞叶痴呆或血管性痴呆)方面,Tau PET显示出良好的诊断性能。

最近,基线tau PET水平的升高与认知能力的加速下降有关,但大多数研究的样本量相对较小,缺乏复制队列,和/或侧重于AD临床连续体的一个阶段。


藉此, 瑞典隆德大学的Rik Ossenkoppele等人, 在前瞻性、纵向多中心研究中探究了:

(1)在一个大队列(n = 1431)中检查[18F]flortaucipir和[18F]RO948 tau PET的预后价值,这些人患有AD痴呆症、轻度认知障碍(MCI)或正常认知能力。

(2)对Tau PET与既定的磁共振成像(MRI)和淀粉样蛋白PET标记物进行头对头比较,以预测未来的认知变化;

(3)调查年龄、性别和/或APOE基因型是否会改变基线Tau PET与认知变化之间的关联。

这项研究从2014年6月1日至2021年2月28日收集了韩国、瑞典和美国的8个队列的数据,平均随访1.9年。共有1431名参与者从记忆诊所、临床试验或队列研究中招募而来;673人认知无障碍(CU组;253[37.6%]淀粉样蛋白-β[Aβ]阳性),443人有轻度认知障碍(MCI组;271[61.2%]Aβ阳性),315人临床诊断为AD痴呆(315[100%] Aβ阳性)。

他们首先在发现性队列(discovery dataset)中的[18F]Flortaucipir PET(n = 1135)或复制性队列(replication dataset)中的[18F]RO948 PET(n = 296)、T1加权MRI(n = 1431)和淀粉样蛋白PET(n = 1329)在基线和重复Mini-Mental State Examination(MMSE)评估。

主要结局:基线[18F]flortaucipir/[18F]RO948 PET在感兴趣的颞部区域的保留,基于MRI的AD标志的皮质厚度,以及淀粉样PET Centiloids被用来预测MMSE的变化,使用线性混合效应模型调整年龄、性别、教育和队列。中介/相互作用分析检验了基线tau PET和认知变化之间的关联是否由基线MRI措施所调解,以及年龄、性别和APOE基因型是否改变了这些关联。

他们发现,在1431名参与者中,平均(SD)年龄为71.2(8.8)岁;751人(52.5%)为男性。

[18F]flortaucipir PET的研究结果预测了MMSE的纵向变化,在所有参与者中,其效应大小强于AD标志的皮质厚度和淀粉样蛋白 。


这些发现在[18F]RO948 PET队列中得到了重复。

在AD痴呆组和Aβ阳性MCI组,而非Aβ阳性CU组,AD特异性的皮层厚度中介了[18F]flortaucipir PET和MMSE之间的关系。

年龄,而不是性别或APOE基因型改变了基线[18F]flortaucipir PET和认知变化之间的关联。

因此,在类似tau PET水平下,年龄较大的人显示出更快的认知衰退。

这个研究的重要意义在于:发现了:tau PET是预测认知变化的一个有前途的工具,它优于淀粉样PET和MRI,并可能支持AD的临床前和前驱阶段的预后过程。

原文出处:
Ossenkoppele R, Smith R, Mattsson-Carlgren N, Groot C, Leuzy A, Strandberg O, Palmqvist S, Olsson T, Jögi J, Stormrud E, Cho H, Ryu YH, Choi JY, Boxer AL, Gorno-Tempini ML, Miller BL, Soleimani-Meigooni D, Iaccarino L, La Joie R, Baker S, Borroni E, Klein G, Pontecorvo MJ, Devous MD Sr, Jagust WJ, Lyoo CH, Rabinovici GD, Hansson O. Accuracy of Tau Positron Emission Tomography as a Prognostic Marker in Preclinical and Prodromal Alzheimer Disease: A Head-to-Head Comparison Against Amyloid Positron Emission Tomography and Magnetic Resonance Imaging. JAMA Neurol. 2021 Jun 28:e211858. doi: 10.1001/jamaneurol.2021.1858. Epub ahead of print. PMID: 34180956; PMCID: PMC8240013.

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    2022-06-12 feather89
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    2022-03-23 yinhl1978
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    2021-07-25 hb2008ye
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    2021-07-24 @gxl

    非常受用

    0

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    2021-07-24 旺医

    顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息

    0

  8. [GetPortalCommentsPageByObjectIdResponse(id=1729052, encodeId=34c11e2905234, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Sun Jun 12 14:29:46 CST 2022, time=2022-06-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2001426, encodeId=7b65200142636, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Wed Mar 23 07:29:46 CST 2022, time=2022-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1331186, encodeId=c6ee13311869f, content=<a href='/topic/show?id=15e2140e438' target=_blank style='color:#2F92EE;'>#PET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14074, encryptionId=15e2140e438, topicName=PET)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTI5PdY90y5Jib8FnPhCXTR2d9v3K17epNSwB2eb0vmXUldNJl2e72S4unZTAHLAojicdVSialTDFHAxA/132, createdBy=78d82500042, createdName=ms7514935887898259, createdTime=Sun Jul 25 20:29:46 CST 2021, time=2021-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509332, encodeId=e0a11509332b3, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Sun Jul 25 20:29:46 CST 2021, time=2021-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1553701, encodeId=a3981553e018f, content=<a href='/topic/show?id=52399126814' target=_blank style='color:#2F92EE;'>#认知衰退#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=91268, encryptionId=52399126814, topicName=认知衰退)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c45614401041, createdName=朱睿睿, createdTime=Sun Jul 25 20:29:46 CST 2021, time=2021-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1002377, encodeId=61fd10023e718, content=非常受用, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210724/725901dc0ed249ebba9d096aacddde3f/a89b874e17434adb82b0c2dff5f374f1.jpg, createdBy=c0225555986, createdName=@gxl, createdTime=Sat Jul 24 19:44:12 CST 2021, time=2021-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1036760, encodeId=7b9a1036e6009, content=顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=旺医, createdTime=Sat Jul 24 08:29:46 CST 2021, time=2021-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1002154, encodeId=99a9100215481, content=认真学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=b3545492917, createdName=smart Ren, createdTime=Sat Jul 24 08:21:24 CST 2021, time=2021-07-24, status=1, ipAttribution=)]
    2021-07-24 smart Ren

    认真学习

    0