生物标志物 生物标志物
Samantha A Keil1, Liangdong Zhou2, Xiuyuan Hugh Wang2
1Weill Cornell Medicine, New York, NY, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
阻塞性睡眠呼吸暂停 (OSA) 损害了脑液的清除,未经治疗的个体表现出更高的淋巴管负担. 持续的正气道压力 (CPAP) 治疗使这种负担正常化,这表明了关键的治疗机制.
科学领域:
- 神经成像是一种神经成像.
- 睡眠医学 睡眠医学
- 神经学 神经学
背景情况:
- 阻塞性睡眠呼吸暂停 (OSA) 影响全球超过9.36亿成年人.
- 未经治疗的OSA与心血管,代谢和神经退行性疾病的风险增加有关.
- 持续正气道压力 (CPAP) 是标准的治疗方法,但遵守率很低.
研究的目的:
- 评估OSA和CPAP治疗对大脑淋巴系统的影响.
- 为了比较基于MRI的增强PVS对比度 (EPC) 和脑脊髓液 (pCSF) 映射在评估淋巴液负担时的灵敏度.
主要方法:
- 32名参与者的横截面研究 (健康对照组,CPAP治疗的OSA,未经治疗的OSA).
- 3T MRI包括T1W,pCSF的多回声FAST-T2和T2W序列.
- 使用FreeSurfer和内部MATLAB代码进行pCSF映射的图像处理.
主要成果:
- 未经治疗的OSA参与者显示显著更高的pCSF负担,特别是在叶 (6.01%),与CPAP治疗 (5.26%) 和健康对照 (5.32%) 相比.
- CPAP治疗似乎使pCSF负担正常化,与健康对照人群密切结合.
- 两组之间没有观察到EPC或皮质体积的显著差异,这表明pCSF是OSA中淋巴变化的更敏感标志物.
结论:
- OSA显著影响大脑的淋巴系统,有助于下游的健康影响.
- 帕伦基马脑脊液 (pCSF) 测绘可能是一个比EPC更敏感的方法,用于检测OSA中微妙的淋巴液变化.
- 需要进一步的纵向研究来证实这些发现.
相关概念视频
01:20Blood Studies for Cardiovascular System I: Cardiac Biomarkers
749
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...
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
01:19Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
516
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...
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
516