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Lancet Neurol:淀粉样蛋白和神经退行性变影像学表现随年龄动态变化

2015-11-21 MedSci MedSci原创

这项状态转变试验表明大脑老化几乎是一个不可避免的随年龄增长而加速的过程,大脑老化致使患者表现出较差的生物标志物状态和临床表现。

梅奥诊所影像科Clifford R Jack Jr教授进行以人群为基础的纵向队列研究,研究具有淀粉样蛋白和神经退行性变的影像学表现的患者转变到痴呆的比例。研究结果2015年11月17日在Lancet Neurology在线发表。

背景:2014年的一项横断面分析表明不同年龄的没有痴呆的临床症状的受试者中淀粉样蛋白和神经退行性变的影像学表现存在很大差异,表明痴呆是一个动态进展和个体化的疾病过程。

这个纵向研究旨在评估随着年龄增长,没有患痴呆的受试者的异常影像学表现的变化趋势,同时评估影像学表现异常的受试者进展为痴呆的趋势。

方法:纳入梅奥临床老龄试验中不伴有痴呆的受试者,进行多峰性摄片。使用PET(造影剂为11C-Pittsburgh复合B)扫描受试者脑部,依据PET检查结果将受试者分为淀粉样蛋白阳性状态(A+) 或淀粉样蛋白阴性状态(A-)。使用(18F-FDG)-PET和MRI检查受试者脑部,依据PET和MRI检查结果,将受试者分为神经退行性变阳性状态(N+) 或神经退行性变阴性状态(N-)。

研究人员保留包括没有行影像学检查的患者数据在内的所有观察数据,使用Markov多态性模型分析四组不同得年龄特异性影像学表现的转变率:A-N-转变为A+N-、A-N-转变为A-N+(依据病理学结果,Alzheimer症可疑)、A+N−转变为A+N+和A-N+转变为A+N+。

研究也评估了患者转变为痴呆的2个年龄特异性比例:A+N+转变为痴呆和A-N+转变为痴呆。研究人员使用不同状态转变率评估受试者生物标志物状态与年龄的相关性。

结果:研究共纳入在基线状态下(2004年11月29日-2015年3月7日)4049例不伴有痴呆的受试者,其中有3512例(87%)的患者临床表现正常,有537例(13%)的患者存在轻度认知损害。

2006年3月28日-2015年4月30日共有1541例受试者行PET或MRI影像学检查。年龄在50岁以下的无痴呆受试者转变成痴呆患者的机会较低,随着年龄的增长无痴呆受试者转变成痴呆患者的机会呈指数级增长。

与65岁的受试者比较,年龄为85岁的受试者从A-N-状态转变为 A-N+状态的比例增加到将近原来的11倍(每100人年17.20 vs1.6),从A+N-状态转变为A+N+状态的比例增加到了原来的3倍(20.8 vs 6.1),从A-N+状态转变为 A+N+状态的比例增加到原来的5倍(13.2 vs 2.6) 。

与65岁的受试者比较,年龄为85岁的受试者从A+N+状态转变为痴呆的比例增加(7.0 vs 0.8),从 A-N+ 状态转变为痴呆的比例增加(1.7 vs 0.6)。

随着年龄增长,受试者从A-N-状态转变为 A+N−状态的比例呈指数级增长,65岁年龄段的受试者从A-N-状态转变为A+N−状态的比例是4例/100人年,75岁年龄的受试者从A-N-状态转变为A+N-状态的比例是6.9例/100人年,75岁之后从A-N-状态转变为 A+N-状态的比例趋于稳定。

多态性模型评估影像学表现与年龄的关系的结果与横断面研究结果相似。

结论:这项状态转变试验表明大脑老化几乎是一个不可避免的随年龄增长而加速的过程,大脑老化致使患者表现出较差的影像学表现和临床表现。

受试者从 A+N-状态转变到更差的状态的比例随着年龄增长而动态增加,75岁之后状态转变的比例趋于稳定。研究发现简单的转变率可以解释人群中复杂的、高度独立的影像学表现的原因。

原始出处:

Clifford R Jack Jr, Terry M Therneau, Heather J Wiste, et all. Transition rates between amyloid and neurodegeneration biomarker states and to dementia: a population-based, longitudinal cohort study. Lancet Neurol. Published Online 17 November 2015.


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    2017-05-15 1de1959bm02(暂无匿称)

    真好!有用

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    2017-02-13 李东泽

    很好,不错,以后会多学习

    0

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  4. 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CST 2016, time=2016-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49631, encodeId=c5b449631e3, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:41:00 CST 2015, time=2015-12-27, status=1, ipAttribution=)]
    2016-08-27 李东泽

    这篇资讯带给我们新知识,启发新思维,不论是科研还是临床工作都有很大的帮助。。。

    0

  5. 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CST 2016, time=2016-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49631, encodeId=c5b449631e3, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:41:00 CST 2015, time=2015-12-27, status=1, ipAttribution=)]
    2016-03-10 yinhl1978
  6. 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CST 2016, time=2016-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49631, encodeId=c5b449631e3, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:41:00 CST 2015, time=2015-12-27, status=1, ipAttribution=)]
  7. [GetPortalCommentsPageByObjectIdResponse(id=198164, encodeId=1b5819816444, content=真好!有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRtv8oDqlMVziaooxY6wnZsHBPxoU3lw89ZcNibcvs3uM0iauxRpdOEuNaH6EW0WtUQrqWictuXe1wBfO/0, createdBy=4a9f1673678, createdName=1de1959bm02(暂无匿称), createdTime=Mon May 15 00:59:42 CST 2017, time=2017-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=175822, encodeId=a5941e582252, content=很好,不错,以后会多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, createdName=李东泽, createdTime=Mon Feb 13 00:25:19 CST 2017, time=2017-02-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1957119, encodeId=5331195e119e4, content=<a href='/topic/show?id=5879e458629' target=_blank style='color:#2F92EE;'>#神经退行#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74586, encryptionId=5879e458629, topicName=神经退行)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=33b92500139, createdName=12498b37m72暂无昵称, createdTime=Sun Nov 29 03:17:00 CST 2015, time=2015-11-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=105916, encodeId=a3cb10591659, content=这篇资讯带给我们新知识,启发新思维,不论是科研还是临床工作都有很大的帮助。。。, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, createdName=李东泽, createdTime=Sat Aug 27 22:23:00 CST 2016, time=2016-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1999605, encodeId=85be1999605ff, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Thu Mar 10 22:17:00 CST 2016, time=2016-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1954378, encodeId=18aa19543e874, content=<a href='/topic/show?id=f42e330843a' target=_blank style='color:#2F92EE;'>#动态变化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33084, encryptionId=f42e330843a, topicName=动态变化)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55683, createdName=仁医06, createdTime=Tue Mar 01 19:17:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1828315, encodeId=a4621828315d7, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Tue Oct 04 05:17:00 CST 2016, time=2016-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677151, encodeId=7fec16e715153, content=<a href='/topic/show?id=e2f4e4588e9' target=_blank style='color:#2F92EE;'>#神经退行性变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74588, encryptionId=e2f4e4588e9, topicName=神经退行性变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a3cc27444881, createdName=liuyiping, createdTime=Fri Jan 22 01:17:00 CST 2016, time=2016-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=57112, encodeId=f9c95e11288, content=再看一遍, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160113/IMG569619FEB03536446.jpg, createdBy=85f81678980, createdName=Lynee劲飞扬, createdTime=Wed Jan 13 23:40:00 CST 2016, time=2016-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49631, encodeId=c5b449631e3, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:41:00 CST 2015, time=2015-12-27, status=1, ipAttribution=)]
    2016-10-04 howi
  8. 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style='color:#2F92EE;'>#动态变化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33084, encryptionId=f42e330843a, topicName=动态变化)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55683, createdName=仁医06, createdTime=Tue Mar 01 19:17:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1828315, encodeId=a4621828315d7, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Tue Oct 04 05:17:00 CST 2016, time=2016-10-04, status=1, ipAttribution=), 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CST 2016, time=2016-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49631, encodeId=c5b449631e3, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:41:00 CST 2015, time=2015-12-27, status=1, ipAttribution=)]
  9. [GetPortalCommentsPageByObjectIdResponse(id=198164, encodeId=1b5819816444, content=真好!有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRtv8oDqlMVziaooxY6wnZsHBPxoU3lw89ZcNibcvs3uM0iauxRpdOEuNaH6EW0WtUQrqWictuXe1wBfO/0, createdBy=4a9f1673678, createdName=1de1959bm02(暂无匿称), createdTime=Mon May 15 00:59:42 CST 2017, time=2017-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=175822, encodeId=a5941e582252, content=很好,不错,以后会多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, 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style='color:#2F92EE;'>#动态变化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33084, encryptionId=f42e330843a, topicName=动态变化)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55683, createdName=仁医06, createdTime=Tue Mar 01 19:17:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1828315, encodeId=a4621828315d7, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Tue Oct 04 05:17:00 CST 2016, time=2016-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677151, encodeId=7fec16e715153, content=<a href='/topic/show?id=e2f4e4588e9' target=_blank style='color:#2F92EE;'>#神经退行性变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74588, encryptionId=e2f4e4588e9, topicName=神经退行性变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a3cc27444881, createdName=liuyiping, createdTime=Fri Jan 22 01:17:00 CST 2016, time=2016-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=57112, encodeId=f9c95e11288, content=再看一遍, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160113/IMG569619FEB03536446.jpg, createdBy=85f81678980, createdName=Lynee劲飞扬, createdTime=Wed Jan 13 23:40:00 CST 2016, time=2016-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49631, encodeId=c5b449631e3, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:41:00 CST 2015, time=2015-12-27, status=1, ipAttribution=)]
    2016-01-13 Lynee劲飞扬

    再看一遍

    0

  10. [GetPortalCommentsPageByObjectIdResponse(id=198164, encodeId=1b5819816444, content=真好!有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRtv8oDqlMVziaooxY6wnZsHBPxoU3lw89ZcNibcvs3uM0iauxRpdOEuNaH6EW0WtUQrqWictuXe1wBfO/0, createdBy=4a9f1673678, createdName=1de1959bm02(暂无匿称), createdTime=Mon May 15 00:59:42 CST 2017, time=2017-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=175822, encodeId=a5941e582252, content=很好,不错,以后会多学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, 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createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, createdName=李东泽, createdTime=Sat Aug 27 22:23:00 CST 2016, time=2016-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1999605, encodeId=85be1999605ff, content=<a href='/topic/show?id=d5df12695e6' target=_blank style='color:#2F92EE;'>#Neurol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12695, encryptionId=d5df12695e6, topicName=Neurol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8217292, createdName=yinhl1978, createdTime=Thu Mar 10 22:17:00 CST 2016, time=2016-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1954378, encodeId=18aa19543e874, content=<a href='/topic/show?id=f42e330843a' target=_blank style='color:#2F92EE;'>#动态变化#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33084, encryptionId=f42e330843a, topicName=动态变化)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55683, createdName=仁医06, createdTime=Tue Mar 01 19:17:00 CST 2016, time=2016-03-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1828315, encodeId=a4621828315d7, content=<a href='/topic/show?id=1b6210686b2' target=_blank style='color:#2F92EE;'>#Lancet#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10686, encryptionId=1b6210686b2, topicName=Lancet)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3f0227, createdName=howi, createdTime=Tue Oct 04 05:17:00 CST 2016, time=2016-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1677151, encodeId=7fec16e715153, content=<a href='/topic/show?id=e2f4e4588e9' target=_blank style='color:#2F92EE;'>#神经退行性变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74588, encryptionId=e2f4e4588e9, topicName=神经退行性变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a3cc27444881, createdName=liuyiping, createdTime=Fri Jan 22 01:17:00 CST 2016, time=2016-01-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=57112, encodeId=f9c95e11288, content=再看一遍, beContent=null, objectType=article, channel=null, level=null, likeNumber=129, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160113/IMG569619FEB03536446.jpg, createdBy=85f81678980, createdName=Lynee劲飞扬, createdTime=Wed Jan 13 23:40:00 CST 2016, time=2016-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=49631, encodeId=c5b449631e3, content=很值得好学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sun Dec 27 20:41:00 CST 2015, time=2015-12-27, status=1, ipAttribution=)]
    2015-12-27 忠诚向上

    很值得好学习

    0

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