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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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生物标志物 生物标志物

Michel J Grothe1, Linda Zhang1, Francisco J López-González1

  • 1CIEN Foundation, Reina Sofia Alzheimer Center, ISCIII, Madrid, Madrid, Spain.

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

边缘与年龄相关的TDP-43脑病变与海马硬化症的神经病理变化显示了海马以外的大脑全脑缩. 这种MRI签名可能有助于在活着的患者中诊断LATE-NC.

科学领域:

  • 神经病理学神经病理学
  • 神经成像是一种神经成像.
  • 老年神经学 老年神经学

背景情况:

  • 边缘性与年龄相关的TDP-43脑病变神经病理变化 (LATE-NC) 经常与阿尔茨海默氏症神经病理变化 (ADNC) 一起发生.
  • 晚期-NC与海马硬化症 (HS) 有关,有助于独立于AD的记忆缺陷.
  • 虽然FDG-PET和MRI研究在HS中发现了temporo-limbic签名和海马缩,但LATE-NC相关的HS中大脑全缩模式需要进一步描述.

研究的目的:

  • 描述与LATE-NC相关的海马硬化相关的基于MRI的全脑缩模式.
  • 为了比较LATE-NC+HS,AD-noHS和健康对照之间的缩模式.
  • 探索HS严重程度与区域大脑体积之间的关系.

主要方法:

  • 研究了84名痴呆症患者,进行了详细的神经病理学评估和死前3T-MRI.
  • 使用二进制和分阶段方案评估ADNC,LATE-NC和HS.
  • 分析了52个大脑区域的MRI数据,使用基于ROI的分析,将解剖病例与1032名健康对照进行了比较.

主要成果:

  • 患有LATE-NC+HS和AD-noHS的痴呆病例表现出类似的大脑全缩模式,最明显的是在中部/前部部和侧部部-部区域.

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  • 与AD-noHS相比,LATE-NC+HS病例在海马,杏仁体,极,胰岛和轨道前皮层的缩显著增加.
  • 一致的HS相关的temporo-limbic缩模式与HS严重程度相关,AD-noHS病例与并发性LATE-NC.或没有并发性LATE-NC.之间没有显著差异.

    • 结论:

    • 与LATE-NC相关的HS与延伸到海马体之外的体内MRI缩模式有关.
    • 这种扩展性缩涉及受到LATE-NC.中TDP-43病理影响的temporo-limbic皮质区域.
    • 识别的MRI签名可能会改善LATE-NC的体内临床检测.