生物标志物 生物标志物
Katherine A Koenig1, Xuemei Huang1, Aaron Bonner-Jackson2
1Cleveland Clinic, Cleveland, OH, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
与阿尔茨海默氏症的amnestic轻度认知障碍 (aMCI) 相比,Logopenic初级渐进性失言症 (LPA) 在语言区域显示皮质较薄. 神经心理缺陷与LPA患者的大脑变化更广泛地相关.
科学领域:
- 神经学 神经学
- 神经成像是一种神经成像.
- 认知神经科学 认知神经科学
背景情况:
- 语音开放性初级渐进性失言症 (LPA) 涉及早期语言衰退,通常与阿尔茨海默病 (AD) 相关.
- 通常,LPA与左后度-度缩有关.
- 这项研究调查了LPA和AMCI在AD中的皮质厚度 (CT) 差异.
研究的目的:
- 为了识别明显的和重叠的MRI皮质厚度 (CT) 在LPA的变化与AD的aMCI相比.
- 为了将这些大脑变化与神经心理 (NP) 测量相关联.
主要方法:
- 在使用Freesurfer的26名LPA和13名aMCI患者中测量了MRI皮层厚度.
- 回归分析,控制年龄,性别和教育,确定了CT的群体差异.
- 显著的CT地区与每个组内的NP措施相关.
主要成果:
- 在几个区域,LPA患者的皮层比aMCI患者薄,主要在左半球,包括和状区域.
- 在aMCI中,左上椎间盘的厚度与回忆,学习,注意力和执行功能相关.
- 在LPA中,CT和NP测量之间的显著相关性更为普遍,涉及左状,近海马和角旋转.
结论:
- 与aMCI相比,LPA在语言和AD相关区域的皮质显著较薄,主要在左半球.
- 神经心理缺陷在LPA中的大脑变化分布更广泛,而不是aMCI.
- 了解这些特定的大脑变化有助于描述LPA和aMCI中的神经退行和疾病进展.
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