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Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

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Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
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Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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生物标志物 生物标志物

Jr-Jiun Liou1, Tales Santini1, Milos D Ikonomovic1

  • 1University of Pittsburgh, Pittsburgh, PA, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
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PubMed
概括
此摘要是机器生成的。

在唐氏综合征 (DS) 中,粉样蛋白-β (Aβ) PET负担与先进的边缘主导性与年龄相关的TDP-43脑病变神经病理变化 (LATE-NC) 有联系,但不是大脑体积. 阿尔茨海默氏病研究中心 (ADRC) 的数据显示,Aβ与粉样蛋白斑块和结相关.

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科学领域:

  • 神经科学是一个神经科学.
  • 神经病理学神经病理学
  • 生物标志物 生物标志物

背景情况:

  • 晚期阿尔茨海默氏病 (AD) 涉及β-粉样蛋白 (Aβ) 和边缘主导的与年龄相关的TDP-43脑病变神经病理变化 (LATE-NC).
  • 唐氏综合征 (DS) 中Aβ和LATE-NC之间的关系,这是一种易患早期AD的人群,尚未检查.
  • 这项研究比较了DS和晚期AD队列中的Aβ沉积和神经病理变化.

研究的目的:

  • 调查唐氏综合征 (DS) 患者死前Aβ沉积和死后神经病理变化之间的关联.
  • 将这些关联与在晚发性阿尔茨海默病 (AD) 的队列中观察到的关联进行比较.

主要方法:

  • 利用了来自阿尔茨海默氏症生物标志物联盟 - 唐氏综合征 (ABC-DS) 和匹兹堡阿尔茨海默氏症研究中心 (ADRC) 的数据.
  • 评估了AβPET扫描 (半球体),死后MRI体积 (杏仁体,海马体) 和详细的组织病理学.
  • 使用统计分析,包括t测试,线性回归和ANCOVA来比较队列并检查关联.

主要成果:

  • 与AD队列相比,DS队列具有类似的Aβ负担,但在诊断时年龄较小,大脑体积较小,CERAD分数更高.
  • 死亡前Aβ负担与任何一组的死亡后杏仁体或海马体体积都没有相关性.
  • 在DS中,较高的Aβ负担与高级LATE-NC阶段有关,而在AD队列中,Aβ负担与粉样质斑块和神经纤维状结相关.

结论:

  • 在唐氏综合征中,死前AβPET负担与晚期NC阶段的晚期相关,而不是死后的大脑体积.
  • 在晚期发病的AD队列中,Aβ负担与已建立的AD病理标记相关:粉样质斑块和神经纤维状结.