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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...
749
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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生物标志物 生物标志物

Elisa Konofagou1

  • 1Columbia University, New York, NY, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
PubMed
概括
此摘要是机器生成的。

一个便携式聚焦超声波 (FUS) 系统安全有效地打开了阿尔茨海默病 (AD) 患者的血脑屏障,降低了β-粉样蛋白水平. 实时洞穴映射指导治疗,显示与治疗结果的强烈相关性.

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Last Updated: Jan 7, 2026

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科学领域:

  • 神经学 神经学
  • 生物医学工程 生物医学工程
  • 医疗成像医学成像

背景情况:

  • 血脑屏障 (BBB) 限制了神经疾病治疗的有效性.
  • 使用微泡的聚焦超声波 (FUS) 可以暂时打开BBB.
  • 对于阿尔茨海默病 (AD) 的现有FUS系统通常是MRI-bound或侵入性.

研究的目的:

  • 评估一款便携式FUS系统,用于阿兹海默症患者的床边BBB开口.
  • 评估FUS介导的BBB打开的安全性和有效性.
  • 为治疗指导使用实时化映射.

主要方法:

  • 五名阿尔茨海默症患者接受了跨脑FUS,微泡针对前额叶皮层.
  • 一个实时化映射系统 (被动声学映射与一致性因子校正) 监测了微泡活动.
  • 在AD患者临床应用之前,该系统在非人类灵长类动物中得到了优化.

主要成果:

  • 60%的患者表现出降低的β-粉样蛋白水平,由PET成像证实 (SUVr降低).
  • 在化剂量和β-粉样蛋白减少之间观察到强烈的相关性 (80%).
  • 便携式FUS系统在20-30分钟内证明了安全高效的BBB打开.

结论:

  • 一个便携式FUS系统是安全和有效的降低β-粉样在轻度至中度的AD.
  • 实时化映射提供了对治疗安全性和有效性的关键反.
  • 未来的研究将探索FUS对认知和tau病理学的影响.