蛋白质组网络分析确定了大脑衰老的潜在生物标志物.
Meghan I Short1,2,3, Alison E Fohner4,5, Håvard K Skjellegrind6,7
1Glenn Biggs Institute for Alzheimer's & Neurodegenerative Diseases, University of Texas Health Science Center, San Antonio, TX, USA.
Journal of Alzheimer's disease : JAD
|November 26, 2023
概括
血蛋白质网络揭示了与临床前大脑缩相关的早期炎症和突触变化. 这些发现表明,在症状出现前几年,痴呆症风险的潜在生物标志物可能出现.
科学领域:
- 神经科学是一个神经科学.
- 蛋白质组学是指蛋白质组学.
- 老年学是一门学科.
背景情况:
- 阿尔茨海默病和相关痴呆症 (ADRD) 在临床诊断前几十年来发展.
- 血蛋白质组可能为健康成年人提供有关大脑衰老和痴呆风险的见解.
研究的目的:
- 确定与神经成像和痴呆风险相关的血蛋白质生物标志物和途径.
- 在基于社区的队列中使用基于关联的网络分析.
主要方法:
- 对1,305个血蛋白进行了加权共表达网络分析.
- 分析了来自弗雷明汉心脏研究 (FHS) 和心血管健康研究 (CHS) 队列的数据.
- 在长期随访期间检查了与MRI脑体积和发病性痴呆症的关联.
主要成果:
- 在FHS中,两个蛋白质组模块 (M2:蛋白质清除/突触维护;M4:炎症) 与大脑总体积有关.
- 与大脑总体积的关联在CHS队列中没有复制.
- 没有发现与海马体积,白质超强度或发病性痴呆症的显著关联.
结论:
- 蛋白质组网络表明,在临床前的大脑缩中,炎症和突触通路的早期参与.
- 这些途径可能对临床痴呆症的发展有影响.
- 血蛋白质组分析为早期神经退行过程提供了一个窗口.
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