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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.
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

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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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生物标志物 生物标志物

Yoo Hyun Um1, Shengmin Wang2, Dong Woo Kang3

  • 1St. Vincent' Hospital, College of Medicine, The Catholic University of Korea, Suwon, Gyeonggi-do, Korea, Republic of (South).

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
PubMed
概括
此摘要是机器生成的。

阿尔茨海默病 (AD) 影响小脑早期,甚至在认知能力下降之前. 在临床前的AD中,小脑体积损失与记忆问题相关,这表明这是一个早期的生物标志物.

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科学领域:

  • 神经成像是一种神经成像.
  • 神经退行发生神经退行.
  • 阿尔茨海默氏症疾病研究研究

背景情况:

  • 阿尔茨海默病 (AD) 越来越多地与小脑干扰有关,这与以前的看法相反.
  • 小脑在AD的认知和神经精神症状中发挥作用.
  • 这项研究检查了AD谱中小脑体积的纵向变化.

研究的目的:

  • 调查正常认知,临床前AD,轻度认知障碍和AD痴呆症患者的纵向小脑体积变化.
  • 探索小脑体积变化与阿尔茨海默病的认知/神经精神症状之间的关联.
  • 为了确定小脑能否作为AD进展的早期生物标志物.

主要方法:

  • 229名老年人被分为正常认知 (NC),临床前AD (PAD),Aβ阳性轻度认知障碍 (MCI) 和AD痴呆症 (ADD) 组.
  • 参与者在两年的随访期间接受了MRI,PET成像和临床评估.
  • 使用SPM12与SUIT图谱分析了区域大脑体积.

主要成果:

  • 在AD痴呆症组 (Crus I,Crus II,Vermis) 中发现了显著的基线小脑体积减少.
  • 在临床前阿尔茨海默氏症组 (左侧Crus I,左侧VI) 发生了渐进的小脑体积损失,此前的认知能力下降.
  • 大脑小脑体积的减少与PAD中的情节性记忆和ADD中的神经精神症状相关.

结论:

  • 纵向小脑体积变化表明AD的进展.
  • 小脑可能充当阿尔茨海默病的早期生物标志物.
  • 小脑区域可能是AD治疗的潜在治疗点.