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相关概念视频

Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

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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.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
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Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

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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.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
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Updated: Jan 7, 2026

Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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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

Michaela Nikpal1, Samantha Marshall1, Gianna Jeyarajan1

  • 1Western University, London, ON, Canada.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
PubMed
概括
此摘要是机器生成的。

没有跌倒史的老年人在现实环境中显示出大脑β活动的增加,这表明环境认知处理的增强. 这与有摔倒史或帕金森病史的人不同.

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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 老年学是指老年学的学科.

背景情况:

  • 环境认知处理对于老年人的日常导航和跌倒风险评估至关重要.
  • 认知处理的变化会影响环境暗示的感知和反应,特别是在老年人和患有神经退行性疾病 (如帕金森病) 的人群中.

研究的目的:

  • 为了研究老年人中大脑活动的变化,没有跌倒史 (NHOF),有跌倒史 (HOF) 和患有帕金森病 (PD) 的个人.
  • 在不同环境 (实验室与现实世界) 中对环境刺激的认知处理进行比较.

主要方法:

  • 使用移动脑电图 (EEG) 来记录45名老年人 (平均年龄70.41) 的皮质活动.
  • 在安静的实验室环境中比较大脑活动与刺激的真实室内环境 (绿色墙壁,自然光线,人).
  • 参与者被分为NHOF,HOF或PD.

主要成果:

  • 与实验室环境相比,患有NHOF的老年人在现实条件下表现出明显更高的额头和部β频率.
  • 对于患有HOF或PD的参与者,在现实世界中没有观察到β激活.
  • 在条件或群体之间没有发现前额和时的甲和α脑电波的显著差异.

结论:

  • 在NHOF中提升的β活性表明在复杂环境中增强了认知处理,注意力和感官集成.
  • 这一发现有助于区分移动障碍和神经退行性疾病的人群中的环境认知处理变化.
  • 强调神经退行性疾病对环境认知处理的影响,强调需要有针对性的干预措施.