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Neurology:研究发现20岁后颞叶新皮层Aβ就开始积累

2017-11-19 zhangfan MedSci原创

研究发现,20-60岁人群,Aβ积累量与年龄呈线性相关,Aβ在成年后就开始在内侧额叶和顶叶的积累

β-淀粉样斑块PET示踪剂Florbetapir(F18)是FDA批准阿尔兹海默造影剂,近日研究人员利用F18对20-60岁人群Aβ积累过程进行考察。

研究招募了76名20-60岁认知正常的志愿者;57名认知正常老年人,年龄范围61-84岁;70名轻度认知障碍或阿尔茨海默疑似患者,所有参与接受florbetapir PET扫描。考察年龄相关的新皮层标准F18摄取率(SUVR)和体素取向以评估Aβ积累过程,比较年轻人、认知正常老年人群与AD患者Aβ积累的变化差异。

研究发现,SUVR显示20-60岁健康人群中, 颞叶新皮层Aβ的累积过程呈现线性增加,AD患者的Aβ主要集中于额叶和内侧顶叶区。20-50岁亚组分析显示,该年龄段人群Aβ积累随年龄的变化趋势的特征最为显著。

研究发现,20-60岁人群,Aβ积累量与年龄呈线性相关,Aβ在成年后就开始在内侧额叶和顶叶的积累。

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    2018-07-25 yinhl1978
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  3. [GetPortalCommentsPageByObjectIdResponse(id=2000187, encodeId=8b81200018ef9, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=98, 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 Jul 25 15:59:00 CST 2018, time=2018-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1753341, encodeId=d3ec1e53341aa, 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=105, 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=Sun Jul 15 20:59:00 CST 2018, time=2018-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1605259, encodeId=fa1b16052595f, content=<a href='/topic/show?id=b820309108' target=_blank style='color:#2F92EE;'>#Aβ#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, 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=Mon Nov 20 23:59:00 CST 2017, time=2017-11-20, status=1, ipAttribution=)]
    2017-11-20 膀胱癌

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