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哈佛大学研究发现:Tau蛋白对认知功能影响,男女有别

2021-01-13 Freeman MedSci原创

Tau蛋白对认知功能影响,男女有别

 
 
越来越多的证据表明,女性比男性表现出更高的tau负担水平;这在那些具有散发性阿尔茨海默病遗传风险的人(例如,载脂蛋白ε4 [APOEε4]携带者)或β-淀粉样蛋白(Aβ)负担水平升高的人中尤为明显。脑脊液(CSF)中总tau和磷酸tau(p-tau)的水平在整个认知障碍谱系的APOEε4女性携带者中都较高,包括那些临床表现上正常的人。尸检结果也观察到女性比男性有更多的tau缠结(tangles),最近对多个队列的尸检样本进行的荟萃分析也证明了这一点。虽然体内CSF (in vivo)的研究结果是一致的,但这种方式并不能提供关于tau负担的大脑区域特异性信息。
 
相对来说,很少有关于tau-正电子发射断层扫描(PET)结果的报告,去探究tau信号大脑分布的性别差异。之前有人发现,临床上正常的老年女性,其全局Aβ水平较高,其内嗅皮层区域(entorhinal)负担水平高于男性。然而,这些研究结果仅限于事先假设的感兴趣的区域(ROI),但对tau-PET在整个大脑中是否存在更广泛的性别相关的区域分布,仍不清楚。尽管其他研究报告了区域tau-PET的性别差异,但只是在葡萄糖代谢或APOEε4状态的背景下。综上所述,相关的研究是稀少的,并没有解决tau在整个大脑的空间分布的性别差异的问题。此外,仍然不清楚性别是如何参与tau-PET对认知能力下降的影响。
 
 
藉此,哈佛大学的Rachel F. Buckley等人,探究了老年人中大脑中tau分布的性别差异,并调查这些差异如何与认知功能相关联。
 
 
他们纳入了343名临床表现正常人(女性,占58%)和55名轻度认知障碍(MCI;女性38%)的人,他们来自哈佛老龄化脑研究(Harvard Aging Brain Study)和阿尔茨海默病神经影像学项目(Alzheimer’s Disease Neuroimaging Initiative)。在41个皮质和皮质下感兴趣的区域(ROIs),通过18F-氟尿嘧啶(FTP)-正电子发射断层扫描(PET)信号量化tau蛋白。首先分析性别对每个ROI的tau信号的影响,同时用线性混合模型探究了性别对不同ROI 的tau信号与认知能力下降的交互作用。
结果显示:在多个皮层区域,女性的tau蛋白水平显著高于男性。此外,与β淀粉样蛋白(Aβ)有交互作用的的tau信号(sex*Aβ-PET)的性别差异集中在内侧和内侧颞区(P <0.007);Aβ+女性的tau信号高于其他组。APOEε4介导的tau信号的性别差异仅在枕叶外侧发现。整合的ROI中,tau信号较高的女性比男性表现出更快的认知能力下降(P = 0.04)。
 
这个研究的重要意义在于发现了,女性的Tau易感性不仅仅局限于颞叶内侧,而且显著地导致了更快的认知能力下降的风险。性别和Aβ的交互影响主要集中在颞叶,然而,颞叶外tau的性别差异凸显了女性临床症状发生时tau增加的可能性。
 
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  2. [GetPortalCommentsPageByObjectIdResponse(id=1753577, encodeId=90c21e53577bf, content=<a href='/topic/show?id=6a57e33772b' target=_blank style='color:#2F92EE;'>#研究发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73377, encryptionId=6a57e33772b, topicName=研究发现)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7e1736602208, createdName=hanhaisha2020, createdTime=Wed Mar 17 13:08:38 CST 2021, time=2021-03-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509312, encodeId=8e0f1509312d0, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, 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 Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557515, encodeId=54f6155e515ea, content=<a href='/topic/show?id=7bec398e2e6' target=_blank style='color:#2F92EE;'>#哈佛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=39872, encryptionId=7bec398e2e6, topicName=哈佛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1c7014916331, createdName=amyloid, createdTime=Thu Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916371, encodeId=542d9163e137, content=是说女性更容易出现tau蛋白沉积在颞叶,且出现tau蛋白沉积更容易痴呆么?, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6e435448568, createdName=Wilson 85, createdTime=Wed Jan 13 22:19:19 CST 2021, time=2021-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916126, encodeId=8abf91612651, content=临床中能方便检验就更好了, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b7a31928393, createdName=学医无涯, createdTime=Wed Jan 13 07:26:03 CST 2021, time=2021-01-13, status=1, ipAttribution=)]
    2021-01-14 hb2008ye
  3. [GetPortalCommentsPageByObjectIdResponse(id=1753577, encodeId=90c21e53577bf, content=<a href='/topic/show?id=6a57e33772b' target=_blank style='color:#2F92EE;'>#研究发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73377, encryptionId=6a57e33772b, topicName=研究发现)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7e1736602208, createdName=hanhaisha2020, createdTime=Wed Mar 17 13:08:38 CST 2021, time=2021-03-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509312, encodeId=8e0f1509312d0, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, 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 Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557515, encodeId=54f6155e515ea, content=<a href='/topic/show?id=7bec398e2e6' target=_blank style='color:#2F92EE;'>#哈佛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=39872, encryptionId=7bec398e2e6, topicName=哈佛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1c7014916331, createdName=amyloid, createdTime=Thu Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916371, encodeId=542d9163e137, content=是说女性更容易出现tau蛋白沉积在颞叶,且出现tau蛋白沉积更容易痴呆么?, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6e435448568, createdName=Wilson 85, createdTime=Wed Jan 13 22:19:19 CST 2021, time=2021-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916126, encodeId=8abf91612651, content=临床中能方便检验就更好了, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b7a31928393, createdName=学医无涯, createdTime=Wed Jan 13 07:26:03 CST 2021, time=2021-01-13, status=1, ipAttribution=)]
    2021-01-14 amyloid
  4. [GetPortalCommentsPageByObjectIdResponse(id=1753577, encodeId=90c21e53577bf, content=<a href='/topic/show?id=6a57e33772b' target=_blank style='color:#2F92EE;'>#研究发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73377, encryptionId=6a57e33772b, topicName=研究发现)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7e1736602208, createdName=hanhaisha2020, createdTime=Wed Mar 17 13:08:38 CST 2021, time=2021-03-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509312, encodeId=8e0f1509312d0, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, 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 Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557515, encodeId=54f6155e515ea, content=<a href='/topic/show?id=7bec398e2e6' target=_blank style='color:#2F92EE;'>#哈佛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=39872, encryptionId=7bec398e2e6, topicName=哈佛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1c7014916331, createdName=amyloid, createdTime=Thu Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916371, encodeId=542d9163e137, content=是说女性更容易出现tau蛋白沉积在颞叶,且出现tau蛋白沉积更容易痴呆么?, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6e435448568, createdName=Wilson 85, createdTime=Wed Jan 13 22:19:19 CST 2021, time=2021-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916126, encodeId=8abf91612651, content=临床中能方便检验就更好了, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b7a31928393, createdName=学医无涯, createdTime=Wed Jan 13 07:26:03 CST 2021, time=2021-01-13, status=1, ipAttribution=)]
    2021-01-13 Wilson 85

    是说女性更容易出现tau蛋白沉积在颞叶,且出现tau蛋白沉积更容易痴呆么?

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1753577, encodeId=90c21e53577bf, content=<a href='/topic/show?id=6a57e33772b' target=_blank style='color:#2F92EE;'>#研究发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73377, encryptionId=6a57e33772b, topicName=研究发现)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7e1736602208, createdName=hanhaisha2020, createdTime=Wed Mar 17 13:08:38 CST 2021, time=2021-03-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1509312, encodeId=8e0f1509312d0, content=<a href='/topic/show?id=19791e14471' target=_blank style='color:#2F92EE;'>#Tau#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, 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 Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557515, encodeId=54f6155e515ea, content=<a href='/topic/show?id=7bec398e2e6' target=_blank style='color:#2F92EE;'>#哈佛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=39872, encryptionId=7bec398e2e6, topicName=哈佛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1c7014916331, createdName=amyloid, createdTime=Thu Jan 14 21:08:38 CST 2021, time=2021-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916371, encodeId=542d9163e137, content=是说女性更容易出现tau蛋白沉积在颞叶,且出现tau蛋白沉积更容易痴呆么?, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6e435448568, createdName=Wilson 85, createdTime=Wed Jan 13 22:19:19 CST 2021, time=2021-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=916126, encodeId=8abf91612651, content=临床中能方便检验就更好了, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b7a31928393, createdName=学医无涯, createdTime=Wed Jan 13 07:26:03 CST 2021, time=2021-01-13, status=1, ipAttribution=)]
    2021-01-13 学医无涯

    临床中能方便检验就更好了

    0

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