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JAMA子刊:临床前老年痴呆患者的皮质PET成像模式的差异性

2022-05-05 MedSci原创 MedSci原创

早期tau沉积在临床前AD期间可能遵循多种轨迹,并可能涉及几个皮质区域。

临床前阿尔茨海默病(AD)患者早期tau沉积的特征对于旨在选择有AD风险的个体并阻止疾病进展的预防试验至关重要。

为了评价在临床上无障碍的大群老年人中,β-淀粉样蛋白(A+)升高的皮质tau正电子发射断层成像(PET)异质性的流行程度,来自美国斯坦福大学的专家开展了一项横断面研究,检查了2014年4月至2017年12月无症状AD抗淀粉样蛋白治疗(A4)研究的随机化前tau PET、淀粉样蛋白PET、结构磁共振成像、人口统计和认知数据。结果发表在JAMA Neurology杂志上。

后续分析使用来自ADNI、HABS及维斯康星研究的观察性tau PET数据来评估一致性。可用的淀粉样和tau PET数据(A4研究,n = 447;ADNI,n = 433;HABS,n = 190;和威斯康星,n = 328),通过检查不对称的皮质tau信号和相对于内侧颞叶(MTL)tau的不成比例的皮质tau信号,确定具有异质皮质tau PET模式(A+T皮质+)的临床前AD患者。

结果共有447名A4参与者(A+组,392;正常β-淀粉样蛋白组,55),平均(SD)年龄为71.8(4.8)岁,包括239名女性(54%)。A+组中共有36人(占A+组的9%)表现出异质性的皮质tau模式,并被进一步分为3个亚型:左侧不对称型、楔前主导型和右侧不对称型。

A+组中共有116人(占A+组的30%)显示MTL tau升高(A+T MTL+)。A+T皮质+组的人比A+T MTL+组的人年轻(t61.867 = -2.597; P = .03)。在A+T皮质+组和A+T MTL+组中,区域tau的增加与海马体积和MTL厚度的减少有关,但与皮质厚度无关。A+T皮层+组和A+T MTL+组的记忆分数相当,而A+T皮层+组的执行功能分数比A+T MTL+组低。A+T皮层+组的患病率和A+T皮层+组内的tau模式在ADNI、HABS和Wisconsin中是一致的。

本研究表明,早期tau沉积在临床前AD期间可能遵循多种轨迹,并可能涉及几个皮质区域。

 

参考文献:

Divergent Cortical Tau Positron Emission Tomography Patterns Among Patients With Preclinical Alzheimer Disease. JAMA Neurol. Published online April 18, 2022. doi:10.1001/jamaneurol.2022.0676

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    2022-05-13 feather89
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    2022-05-04 肿瘤克星

    JAMA上文章都是顶级的,谢谢梅斯及时上新

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1729537, encodeId=d9b81e29537f8, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, 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=Fri May 13 22:34:34 CST 2022, time=2022-05-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2009124, encodeId=a4eb2009124f4, content=<a href='/topic/show?id=3ed8e121172' target=_blank style='color:#2F92EE;'>#痴呆患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71211, encryptionId=3ed8e121172, topicName=痴呆患者)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e4aa106, createdName=crystal0562, createdTime=Mon Sep 19 17:34:34 CST 2022, time=2022-09-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2039498, encodeId=49d12039498ca, content=<a href='/topic/show?id=cfbf14091d5' target=_blank style='color:#2F92EE;'>#PET成像#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14091, encryptionId=cfbf14091d5, topicName=PET成像)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/1103841572/D2FD7704B41C9E22364B1E54ABB223BB/100, createdBy=1df22500220, createdName=ms1260584454294838, createdTime=Tue May 10 15:34:34 CST 2022, time=2022-05-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1331213, encodeId=81f8133121305, content=<a href='/topic/show?id=15e2140e438' target=_blank style='color:#2F92EE;'>#PET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, 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=Fri May 06 01:34:34 CST 2022, time=2022-05-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1243490, encodeId=d9fa124349068, 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=39, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=肿瘤克星, createdTime=Wed May 04 13:34:34 CST 2022, time=2022-05-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1247090, encodeId=7b4e124e090de, content=老年性痴呆,未来还是希望借助神经电生理吧,也许更为有效!, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=neuro.Dr, createdTime=Wed May 04 13:34:34 CST 2022, time=2022-05-04, status=1, ipAttribution=)]
    2022-05-04 neuro.Dr

    老年性痴呆,未来还是希望借助神经电生理吧,也许更为有效!

    0

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