生物标志物 生物标志物
Jessica Diniz Pereira1,2, Lívia Cristina Ribeiro Teixeira1, Izabela Mamede Costa Andrade da Conceição3
1Faculty of Pharmacy - Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
在阿尔茨海默病 (AD) 患者中,四种微RNA (miRNA) 显示出减少表达,可能作为新的生物标志物. 这些miRNAs调节关键通路,包括新发现的AP-1通路,对神经元亡至关重要.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 生物化学 生物化学
背景情况:
- 阿尔茨海默病 (AD) 是导致痴呆的主要原因,影响全球数百万人.
- 微RNAs (miRNAs) 是大脑脊髓液 (CSF) 中发现的关键基因调节剂,作为AD生物标志物显示出希望.
- 识别特定的miRNA及其调节途径对于理解AD病理生理学至关重要.
研究的目的:
- 与使用in silico分析的对照组相比,在AD患者的CSF中识别差异表达的miRNA.
- 通过系统的文献审查来验证这些miRNA发现.
- 分析AD中已识别的miRNAs调节的生物途径.
主要方法:
- 在基因表达总量 (GEO) 数据集上利用机器学习 (LightGBM) 找到预测性miRNA.
- 进行了对24项研究的系统文献审查,以确定相关的miRNAs.
- 进行途径丰富分析以确定重要的生物途径.
主要成果:
- 鉴定了四种常见的miRNAs (30a-3p, 193a-5p, 143-3p, 145-5p) 在AD患者的表达下降.
- 这些miRNAs调节已建立的AD相关途径 (TGF-β,ERBB,MAPK) 和新的AP-1途径.
- 突出了AP-1途径在神经元细胞死亡和亡中的作用.
结论:
- 30a-3p,193a-5p,143-3p和145-5p的miRNAs是AD的潜在生物标志物.
- 参与神经元亡的AP-1通路是AD病理生理学中一个重要的新发现.
- 这些miRNA和途径为了解和潜在治疗AD提供了新的途径.
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