生物标志物 生物标志物
Elham Ghanbarian1, Babak Khorsand1, Laura A Rabin2
1University of California, Irvine, Irvine, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
血清GFAP水平表明,患有阿尔茨海默氏症 (AD) 的女性认知能力下降的风险更高. 这凸显了在AD风险评估和预防策略中需要采用性别特异性的方法.
科学领域:
- 神经科学是一个神经科学.
- 生物标志物 生物标志物
- 阿尔茨海默氏症疾病研究研究
背景情况:
- 炎症是阿尔茨海默氏症 (AD) 病理学的关键因素,可能会影响AD风险的性别差异.
- 质纤维酸蛋白 (GFAP) 水平升高,表明星系细胞反应性,与加速的认知衰退相关.
- 在阿尔茨海默氏症中,GFAP在性别依赖性认知衰退轨迹中的特定作用仍然不清楚.
研究的目的:
- 调查血清GFAP水平与认知能力下降之间的关系中的潜在性别差异.
- 检查这些协会在认知无障碍 (CU) 个体.
主要方法:
- 从A4 (粉素阳性) 和LEARN (粉素阴性) 研究中对949名CU参与者的横截面分析.
- 在240周内对695名参与者的纵向分析,评估基于基线GFAP水平的临床前阿尔茨海默氏症认知复合 (PACC) 变化.
- 分析按性别和年龄组 (65-75岁和>75岁) 和粉样蛋白状况分层.
主要成果:
- 女性的基线GFAP水平比男性高 (p < .001).
- 较高的GFAP水平与女性的PACC下降有关 (横截面和纵向,p < .01),但在男性中没有显著的关系.
- 在不同年龄组的女性和老年男性 (>75岁) 中,GFAP与PACC的下降有关.
- 只有在粉样蛋白阴性女性中 (p < .001) 才观察到GFAP和PACC之间的显著负相关性.
结论:
- 血清GFAP可能作为预测性生物标志物,在认知不受损的女性认知衰退.
- 这些发现强调了在AD风险评估和预防措施中需要考虑性别特异性的必要性.
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