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相关概念视频

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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生物标志物 生物标志物

Juliana Moreno Rada1,2,3,4, Luisa María Zapata Saldarriaga1,2,3,4, Elkin Garcia-Cifuentes4

  • 1Universidad de Antioquia, Medellín, Antioquia, Colombia.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
PubMed
概括

脑电图 (EEG) 和双任务 (DT) 范式有效地区分了PSEN1-E280A变异的携带者,这是自体主导阿尔茨海默病 (ADAD) 的遗传原因. 这些非侵入性生物标志物显示出在临床前阶段早期ADAD检测的前景.

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科学领域:

  • 神经科学是一个神经科学.
  • 生物标志物开发 生物标志物开发
  • 遗传学 是一个遗传学.

背景情况:

  • 哥伦比亚拥有最大的自体主导性阿尔茨海默病 (ADAD) 亲属,原因是PSEN1-E280A变种.
  • 脑电图 (EEG) 是ADAD的一个欠发达的生物标志物,有助于理解大脑功能和电生理变化.
  • 双任务 (DT) 范式对于检测ADAD等神经退行性疾病中的认知障碍是有用的.

研究的目的:

  • 评估EEG和DT范式作为生物标志物的有效性,用于识别患有PSEN1-E280A变异的个体.
  • 评估无症状携带者与非携带者的大脑功能和电生理学变化.
  • 探索用于早期ADAD检测的非侵入性,便携式工具.

主要方法:

  • 使用OpenBCI系统从无症状的PSEN1-E280A载体 (n=37) 和非载体 (n=42) 收集了EEG数据.
  • 双重任务模式涉及运动任务 (单一任务) 和联合运动-认知任务 (减法或口语流).
  • 计算了双任务成本 (DTC),并提取了光谱和神经动态特征并进行了统计分析.

主要成果:

  • 在认知任务 (DTS7,DTS1) 期间,Beta1和Beta3波段 (额头区域) 的中观察到显著的效应大小.
  • 在DTAN期间Beta2 (C4) 和DTS7期间Theta/Alpha1调制 (正面) 的相对功率显示出显著的差异.
  • 在DTS7期间,前部区域的α2调制也显著.

结论:

  • 实验方法成功地提取了大脑信息,区分了PSEN1-E280A载体和非载体.
  • 阿尔法和β频段 (正面和中央区域) 的DTC值显示出更大的效果大小,表明对临床前差异的敏感性.
  • 这种EEG和DT模式的组合为临床前ADAD载体识别提供了增强的,非侵入性的工具.