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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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构建北京地区PD相关认知域评估量表的划界分常模并进行最佳划界值的筛选,为国内临床医生诊断PD-MCI提供可靠的评估标准。

IVD前沿丨帕金森病(PD)早期诊断新型生物标志物

这些结果强调了血浆中含有miR-44438的EV作为α-突触核蛋白病早期检测和进展监测的生物标志物的潜力。

帕金森病获治疗重大突破!每周一次,长效微球制剂「罗替高汀微球」在华落地!

注射用罗替高汀微球是全球首个治疗帕金森病的长效缓释微球制剂,也是目前更符合“持续多巴胺能刺激(CDS)”理念的周制剂。

Nature Genetics:揭示帕金森病的幕后推手:RAB32基因新变异的发现

这项研究也证明了家族性病例的采集和大量对照组结合使用在识别低频变异中的有效性,这对于PD以及其他复杂疾病的遗传研究具有重要意义。

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

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