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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:
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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:
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生物标志物 生物标志物

Neha Singh-Reilly1, Jonathan Graff-Radford2, Mary M Machulda3

  • 1Mayo Clinic, Rochester, MN, USA.

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概括
此摘要是机器生成的。

后皮层缩 (PCA) 患者表现出干扰的背部注意力网络连接,影响记忆功能和灰质体积. 这些发现突出了网络在PCA认知缺陷中的作用.

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科学领域:

  • 神经科学是一个神经科学.
  • 认知神经学 认知神经学
  • 神经成像是一种神经成像.

背景情况:

  • 后皮层缩 (PCA) 的特点是视觉空间,视觉感知和注意力缺陷.
  • 背部注意网络 (DAN) 对注意力和其他认知功能至关重要,但其与PCA中的其他大脑网络的关系尚不清楚.

研究的目的:

  • 在PCA患者中研究背部注意网络 (DAN) 的功能连接.
  • 检查PCA中DAN连接,灰质体积和记忆功能之间的关系.

主要方法:

  • 在使用CONN工具箱的57名PCA患者和60名认知不受损 (CU) 个体中,比较了大脑网络内部和大脑网络之间的功能连接.
  • 分析了DAN的连接性,包括前额眼场 (FEF) 和眼内 (IPS),以及它与前额,视觉和默认模式网络 (DMN) 的相互作用.
  • 使用多变量线性回归来评估网络连接,灰质体积和临床测试得分之间的关联.

主要成果:

  • 与CU患者相比,PCA患者在DAN中的网络内连接性降低,特别是在IPS和整体网络中,与CU患者相比.
  • 在PCA患者中,观察到前端对象网络和DAN (FEF和整个网络) 之间增加了网络之间的连接.
  • 较低的DAN网络内部连接与灰色质量减少的趋势以及显著较低的记忆测试分数相关 (AVLT-RCP,WMS III位数跨度向后).

结论:

  • 在PCA中,涉及DAN的网络内部和网络之间的功能连接被破坏.
  • 这些干扰与记忆障碍有关,在较小程度上,PCA中的灰色物质体积损失.
  • 在PCA中,DAN的连接性发生了变化,影响了超出注意力的认知功能.