生物标志物 生物标志物
Debora Afonso Silva Rocha1, Luis E Santos1, Thaís Lopes Pinheiro1
1D'Or Institute for Research and Education, Rio de Janeiro, RJ, Brazil.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
血神经纤维光链 (NfL) 显示,随着巴西人的老龄化,水平增加,与大脑体积减少相关. 确定局部参考值对于诊断神经退行性疾病至关重要.
科学领域:
- 神经科学是一个神经科学.
- 生物标志物研究 生物标志物研究
- 老龄化研究研究.
背景情况:
- 血生物标志物对于神经退行性疾病管理至关重要.
- 神经纤维光链 (NfL) 表明神经轴损伤和大脑体积损失.
- 巴西和拉丁美洲缺乏血NfL的当地参考值.
研究的目的:
- 在健康的老年巴西人中确定血NfL的局部参考值.
- 在正常衰老中评估血生物标志物.
- 研究血生物标志物与大脑结构之间的相关性.
主要方法:
- 在一项纵向痴呆症研究中分析了77名健康的巴西老年人的数据.
- 利用结构T1wMRI和FreeSurfer进行大脑形态分析.
- 使用SIMOA HD-X仪器测量了等离子体生物标志物.
主要成果:
- 确定血NfL正常值和巴西老年人的年增长率.
- 在血NfL和减少灰质,白质,平均皮质厚度和海马体积之间发现了显著的相关性.
- 在血NfL和衰老之间观察到强烈的相关性 (皮尔森r=0.4993,p<0.001).
结论:
- 血NfL是神经退行性变化的有前途的生物标志物.
- 血NfL水平与衰老和大脑体积减少相关.
- 确定巴西的参考值对于诊断和监测神经退行性疾病的临床使用至关重要.
相关概念视频
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