血管内皮生长因子a的升高与老年人默认网络连接的破坏有关
Arunima Kapoor1, Jung Yun Jang2, Allison C Engstrom1
1Department of Psychological Science, University of California, Irvine, Irvine, CA, USA.
Brain imaging and behavior
|February 4, 2025
概括
血管内皮生长因子A (VEGF-A) 的较高血水平与老年人大脑连接性降低有关. 这一发现表明VEGF-A可能在早期神经认知变化中发挥作用.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 老年学是一门学科.
背景情况:
- 血管内皮生长因子A (VEGF-A) 对于维持大脑血管至关重要.
- 默认模式网络 (DMN) 对认知功能至关重要,其中断与与衰老相关的认知衰退有关.
- 在老年人中,血VEGF-A和DMN功能连接之间的关系仍然未被探索.
研究的目的:
- 研究血VEGF-A水平与大脑功能连接之间的关联,特别是在DMN内,在认知健康的老年人中.
- 探索VEGF-A在与衰老相关的早期神经认知变化中的潜在作用.
主要方法:
- 76名健康的老年人接受了血VEGF-A和休息状态功能性MRI (rs-fMRI) 的血液测试.
- 分析了 rs-fMRI 数据,使用兴趣区域 (ROI) 到ROI连接和图形理论来评估DMN连接和全球效率.
- 使用多重线性回归来确定VEGF-A水平与DMN连接性之间的关联,控制共变量.
主要成果:
- 在血VEGF-A水平和DMN连接性之间发现了显著的负相关性 (B = -0.14,p = .038).
- 此外,VEGF-A水平与DMN网络的整体效率降低也显著相关 (B = -0.18,p = .004).
- 这些关联在考虑年龄,性别,教育和血管风险因素后仍然显著.
结论:
- 血VEGF-A水平升高与老年人DMN功能连接的中断有关.
- 这些发现表明,VEGF-A可能是神经认知障碍进展的早期指标.
- 需要进一步的研究来澄清增加的VEGF-A是否有助于神经认知障碍的发病或起保护作用.
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