npj Parkinsons Dis:快速眼动睡眠者,血液代谢物可预测其未来疾病风险

2022-04-14 Freeman MedSci原创

代谢改变和炎症参与了iRBD的病理生理学,并提示iRBD患者LTS进展的生物学差异

与路易体和神经纤维聚集的α-突触蛋白相关的神经变性(路易型突触蛋白病;LTS)在临床上表现为帕金森病,通常与晚期发病的痴呆(即帕金森病(PD))相关,尽管痴呆也可以作为早期特征出现,然后被命名为路易体痴呆(DLB)。这种临床异质性的生物学基础仍不甚明了。

图1 论文标题图

孤立的快速眼动(REM)睡眠行为障碍(iRBD)是一种异常睡眠症,其特点是强烈的梦境行为和REM睡眠肌肉失张力。

虽然iRBD患者没有明显的神经系统疾病,但长期的前瞻性研究表明,90%以上的患者在iRBD诊断后的14年内发展为LTS,其余无病的患者显示出发展为LTS的短期风险标志。

因此,iRBD是LTS前驱阶段的一个临床标志,为研究LTS的早期阶段提供了一个很好的机会。这对临床发病时的管理、早期疾病修改干预措施的开发、以及未来神经保护试验中的选择和分层都很重要。

iRBD和LTS与心血管风险因素和炎症过程有关。基于核磁共振(NMR)的测试是一种强大的方法,可以表征完整血清样本中的脂蛋白和蛋白质糖基化概况,这已被用于研究代谢变化-和系统性炎症过程。

然而,这种类型的方法以前在iRBD的背景下还没有被探索过。

藉此,西班牙Network Center for Biomedical Research in Neurodegenerative Diseases的Ariadna Laguna等人, 通过核磁共振评估了iRBD患者血清样本的脂蛋白和蛋白质糖基化概况,并评估基线概况是否能确定未来LTS的发展,以及最初是否表现为帕金森症或痴呆。

他们用核磁共振(NMR)光谱法评估了82名iRBD患者的脂蛋白和蛋白质糖基化概况,这些样品是在他们转换为明显的LTS之前和/或之后收集的,还有29个匹配的对照血清样品。

对数据进行了统计分析,以确定改变的代谢物并构建预测模型。单变量分析发现,与对照组相比,患有LTS的iRBD患者之间没有差异。

然而,当分析区分最初表现为帕金森症(pre-PD)或痴呆(pre-DLB)的iRBD患者时,发现了明显的差异。

图2 代谢改变示意图

在分析LTS诊断前后的配对iRBD样本时也发现有明显的差异。

他们建立了预测模型,并区分了对照组和DLB前患者,以及DLB前和PD前患者。这允许对iRBD患者未来可能的临床结果进行预测。

这提供了iRBD患者亚组中脂蛋白和糖基化谱改变的证据。

这些结果表明,代谢改变和炎症参与了iRBD的病理生理学,并提示iRBD患者LTS进展的生物学差异。通过核磁共振对血清样本进行分析,可能是一个有用的工具,以确定短期高风险的iRBD患者是否会转化为帕金森症或痴呆症。

 


原文出处:
Laguna A, Xicoy H, Tolosa E, et al. Serum metabolic biomarkers for synucleinopathy conversion in isolated REM sleep behavior disorder. npj Parkinsons Dis. 2021;7(1):40. doi:10.1038/s41531-021-00184-9

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文章探讨了Prasinezumab这种单克隆抗体在早期帕金森病中的潜在的治疗作用。

【帕金森病专题分享】探索帕金森病进展及诊疗全攻略

帕金森病日来临之际,我们特别推出了帕金森病专题系列文章。无论你是初入此领域的新手,还是经验丰富的专家,这里都有你需要的知识和信息。点击立即阅读,共同提升帕金森病诊疗水平!

话题:帕金森病的真相你了解多少?

我们欢迎各位老师,学者们在下方评论区共同探讨帕金森病的各个方面,包括但不限于:帕金森病的介绍、早期症状、体征、预防等都可一起分享出来。

好文推荐 | 帕金森病睡眠障碍结构特征及其影响因素的临床研究

探讨帕金森病(PD)患者睡眠障碍的发生率、睡眠结构特征、影响因素。

2024 NICE 诊断指南:帕金森病远程监测设备 [DG51]

英国国家卫生与临床优化研究所(NICE,National Institute for Health and Clinical Excellence) · 2024-01-25

2023 NICE 技术鉴定指南:左旋多巴/卡比多巴组合治疗伴有运动症状的晚期帕金森病[TA934]

英国国家卫生与临床优化研究所(NICE,National Institute for Health and Clinical Excellence) · 2023-11-29

帕金森病患者睡眠障碍评估与护理干预的最佳证据总结

浙江中医药大学护理学院 · 2023-08-10

早中期帕金森病患者运动管理的最佳证据总结

山东第一医科大学附属省立医院老年神经内科 · 2023-05-10