生物标志物Aβ和ND与客观认知密切相关

2015-06-29 高晓方 译 医学论坛网

美国一项研究表明,依据生物标志物状况进行分组时,淀粉样蛋白-β(Aβ)或神经退行性变(ND)阳性个体的主观认知关注(SCC)程度高于生物标志物阴性个体。研究结果与SCC预测Aβ阳性结果保持一致。Aβ和ND均与SCC相关,并且独立于客观记忆表现。论文6月5日在线发表于《神经病学》(Neurology)杂志。 此项研究共纳入接受匹兹堡化合物B PET、

美国一项研究表明,依据生物标志物状况进行分组时,淀粉样蛋白-β(Aβ)或神经退行性变(ND)阳性个体的主观认知关注(SCC)程度高于生物标志物阴性个体。研究结果与SCC预测Aβ阳性结果保持一致。Aβ和ND均与SCC相关,并且独立于客观记忆表现。论文6月5日在线发表于《神经病学》(Neurology)杂志。

此项研究共纳入接受匹兹堡化合物B PET、18F-脱氧葡萄糖PET和结构MRI检查的257例受试者;受试者同时接受包括数项有关于SCC调查问卷在内的成套神经心理学测定。将受试者分类为4个生物标志物组:生物标志物均为阴性(Aβ−/ND−),仅淀粉样蛋白阳性(Aβ+/ND−),生物标志物均为阳性(Aβ+/ND+),仅ND阳性(Aβ−/ND+)。在上述临床正常的老年受试者中,确定神经影像生物标志物Aβ和ND与自报SCC程度较大的相关性。

结果显示,对客观记忆表现进行控制之后,Aβ和ND均与SCC程度较大独立相关。与之相反,对SCC进行控制后,Aβ和ND均客观记忆表现无相关性。进一步检查揭示,Aβ或ND阳性个体的SCC程度大于生物标志物阴性个体。此外,对ND状况进行控制之后,SCC程度较大可预测Aβ阳性。

原始出处:

Amariglio RE1, Mormino EC2, Pietras AC2, Marshall GA2, Vannini P2, Johnson KA2, Sperling RA2, Rentz DM2.Subjective cognitive concerns, amyloid-β, and neurodegeneration in clinically normal elderly.Neurology, June 5, 2015.pii: 10.1212/WNL.0000000000001712.

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    2015-07-30 zx890910

    APP和中枢淀粉样斑块息息相关

    0

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    2015-07-04 huaxipanxing

    看看

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    2015-07-01 膀胱癌

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