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JAMA Neuro:Aβ水平的空间范围以及与Tau-PET和认知的相关性研究

2022-08-31 MedSci原创 MedSci原创

区域性Aβ结合似乎在生物学上是相关的,在这个阶段的参与者仍然相对没有CSF磷酸化的tau181、tau-PET结合和相关的认知衰退,使他们成为抗淀粉样蛋白药物的理想目标。

抗淀粉样蛋白制剂的预防试验最好招募在正电子发射断层扫描(PET)上最早显示出生物相关β-淀粉样蛋白(Aβ)结合的人。近期发表在JAMA Neurology杂志上的研究探讨了Aβ-PET结合开始显示与阿尔茨海默病(AD)的其他标志物相关的时间。

这项纵向的多中心队列研究包括3个独立的队列:PREVENT-AD(数据收集于2012-2020年),ADNI(2005-2019年),以及HABS(2011-2019年)。在Aβ-PET结合空间范围的3级分类中,如果个人在指定的一组容易出现早期Aβ积累的脑区中显示阳性信号,则被指定为具有广泛的Aβ沉积。那些在部分但不是全部有结合的人被归类为有区域性沉积。所有在第一次Aβ PET扫描时认知能力无障碍的参与者。主要结果是脑脊液(CSF)的差异、遗传学、tau-PET负担和认知能力下降。

结果共纳入817名参与者,包括129名来自PREVENT-AD队列(平均[SD]年龄,63.5[4.7]岁),400名来自ADNI(平均[SD]年龄,73. 6[5.8]岁),以及288名来自HABS(平均[SD]年龄,73.7[6.2]岁)。与Aβ阴性者相比,那些有区域性Aβ结合的人显示出更多的APOE ε4携带者(18 [64%] vs 22 [27%] PREVENT-AD和34 [31%] vs 38 [19%] ADNI),CSF Aβ1-42水平降低(F = 24和71),以及更大的纵向Aβ-PET积累(显著β = 0.019)。

广泛的淀粉样蛋白结合的参与者进一步表现出明显的认知下降(显着β=-0.014至-0.08),更大的CSF磷酸化tau181(F = 5和27),和tau-PET结合(所有F > 7.55)。使用每个队列规定的Aβ阳性的二分法阈值或视觉阅读分类,大多数参与者(56%至100%,取决于分类方法和队列)的区域Aβ会被归类为Aβ阴性。

综上,区域性Aβ结合似乎在生物学上是相关的,在这个阶段的参与者仍然相对没有CSF磷酸化的tau181、tau-PET结合和相关的认知衰退,使他们成为抗淀粉样蛋白药物的理想目标。

 

参考文献:

Spatial Extent of Amyloid-β Levels and Associations With Tau-PET and Cognition.

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    2022-12-04 feather89
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    2022-08-25 hb2008ye
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    2022-08-25 膀胱癌
  6. [GetPortalCommentsPageByObjectIdResponse(id=1729784, encodeId=a84e1e29784b1, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, 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 Dec 04 22:10:28 CST 2022, time=2022-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1838104, encodeId=9b421838104b2, content=<a href='/topic/show?id=3f34e253206' target=_blank style='color:#2F92EE;'>#相关性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72532, encryptionId=3f34e253206, topicName=相关性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Mon Apr 24 17:10:28 CST 2023, time=2023-04-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1331218, encodeId=1a851331218ab, content=<a href='/topic/show?id=15e2140e438' target=_blank style='color:#2F92EE;'>#PET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=145, 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=Thu Aug 25 12:10:28 CST 2022, time=2022-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509376, encodeId=be6015093e651, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=115, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17144, encryptionId=19791e14471, topicName=Tau)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=hb2008ye, createdTime=Thu Aug 25 12:10:28 CST 2022, time=2022-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1605296, encodeId=4e9b16052965a, content=<a href='/topic/show?id=b820309108' target=_blank style='color:#2F92EE;'>#Aβ#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3091, encryptionId=b820309108, topicName=Aβ)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee1c19366172, createdName=膀胱癌, createdTime=Thu Aug 25 12:10:28 CST 2022, time=2022-08-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1243666, encodeId=8574124366636, content=JAMA上文章都是顶级的,谢谢梅斯及时上新, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿瘤克星, createdTime=Wed Aug 24 00:10:28 CST 2022, time=2022-08-24, status=1, ipAttribution=)]
    2022-08-24 肿瘤克星

    JAMA上文章都是顶级的,谢谢梅斯及时上新

    0

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