JAMA Neuro:血浆p-tau181、p-tau231浓度可有效预测路易体痴呆患者认知能力下降

2021-12-04 MedSci原创 MedSci原创

路易体痴呆(DLB)是最常见的神经变性病性痴呆之一,仅次于阿尔茨海默病(AD)。

路易体痴呆(DLB)是最常见的神经变性病性痴呆之一,仅次于阿尔茨海默病(AD)。 除痴呆外,其特征性临床表现还包括:视幻觉、帕金森综合征、波动性认知障碍、自主神经功能障碍、睡眠障碍,以及对抗精神病药敏感。AD合并DLB的患者很常见,该类患者往往认知能力下降更快有关;因此,预计血浆p-tau的浓度可能对评估这种疾病患者的认知障碍有帮助。

为了测量血浆p-tau(p-tau181和p-tau231)的浓度,并评估它们与可能的DLB患者认知能力下降的关系,来自挪威斯塔万格大学的专家开展了相关研究,结果发表在JAMA Neurology杂志上。

这项多中心纵向队列研究包括从2002年1月1日至2020年12月31日在10个中心注册的欧洲DLB(E-DLB)联盟队列的参与者,随访时间长达5年。其中987名临床诊断为可能的DLB(n = 371)、帕金森病(n = 204)、AD(n = 207)以及健康对照(HCs)的参与者(n = 205)。主要结果是测量血浆p-tau181和p-tau231水平。迷你精神状态检查(MMSE)被用来测量认知能力。

结果在987名患者中(512名男性[51.9%];平均[SD]年龄,70.0[8.8]岁),DLB患者在年龄、性别或受教育年限方面与AD组的患者没有明显区别,但DLB组比HC组年龄大,并且包括比AD和HC组更多的男性。总的来说,DLB患者的血浆p-tau181和p-tau231的基线浓度明显高于HC组,但低于AD组,与帕金森病组相似。

在CSF淀粉样蛋白-β42水平异常的DLB患者亚组中,与正常水平的患者相比,两种p-tau标志物的血浆浓度更高(p-tau181的组间差异为-3.61pg/mL;95%CI,-5.43至-1.79pg/mL;p-tau231的组间差异为-2.51pg/mL;95%CI,-3.63至-1.39pg/mL)。基于CSF中Aβ42水平的降低,DLB患者的p-tau181水平和p-tau231水平在确认的AD病理特征之间没有差异。

在DLB中,发现较高的血浆p-tau181和p-tau231水平与基线时较低的MMSE评分之间有明显的联系(对于p-tau181,-0.092 MMSE分;对于p-tau231,-0.16 MMSE分),以及随着时间推移MMSE下降更快。在调整了性别和年龄后,血浆p-tau181水平与每年MMSE下降0.094分相关,而血浆p-tau231水平与每年MMSE下降0.130分相关。

本研究表明,血浆p-tau181和p-tau231水平可作为评估DLB患者认知能力下降的成本效益和可获得的生物标志物。

 

参考文献:

Association of Plasma p-tau181 and p-tau231 Concentrations With Cognitive Decline in Patients With Probable Dementia With Lewy Bodies. JAMA Neurol. Published online November 22, 2021. doi:10.1001/jamaneurol.2021.4222

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    2022-07-18 longerg
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    2021-12-06 hb2008ye
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    2021-12-04 SR~young海东

    关注医学

    0

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    2021-12-04 仁术2021

    不错学习了。

    0

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    2021-12-04 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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