光学连贯断层扫描血管造影揭示了对多发性硬化症中相辅相成的血管和神经退行机制的洞察力
Charmaine Hiu-Ying Yam1,2, Danuta M Sampson1,3, Andreia Marques Elias1
1Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London WC1B 5EH, UK.
Brain communications
|January 29, 2026
概括
光学连贯断层扫描血管学揭示了多发性硬化症患者视网膜微血管结构的变化,将其与大脑缩和视力丧失联系起来. 这些发现表明视网膜成像可以跟踪神经血管损伤和疾病进展.
科学领域:
- 眼科和神经病学 眼科和神经病学
- 神经成像是一种神经成像.
- 血管生物学 血管生物学
背景情况:
- 多发性硬化症 (MS) 涉及神经退行和视觉通路损伤.
- 光学连贯断层扫描血管学 (OCTA) 测量视网膜微血管,提供了对MS神经血管机制的潜在洞察力.
- 了解视网膜变化,大脑体积和临床结果之间的关系对于MS管理至关重要.
研究的目的:
- 研究OCTA和OCT指标,大脑体积和MS患者的视觉结果之间的关联.
- 使用视网膜成像来探索MS中神经退行症背后的神经血管机制.
- 评估OCTA作为MS视觉通路完整性的生物标志物的潜力.
主要方法:
- 323名多发性硬化患者和80名对照人群的横截面研究.
- 参与者接受了OCT/OCTA,临床评估和脑部MRI.
- OCTA血管分析器工具箱用于推导视网膜血管密度和网络复杂度指标.
主要成果:
- 与对照组相比,MS患者的视网膜血管密度降低,视网膜神经纤维层较薄.
- 减少的OCTA和OCT指标与较小的大脑体积相关,特别是在视觉处理区域.
- 与OCT指标相比,视网膜微血管异常与视敏度和色彩视觉缺陷的联系更强烈.
结论:
- 在MS中视网膜微血管系统异常与高阶视觉处理区域的灰质缩有关.
- OCTA显示出作为OCT补充生物标志物的承诺,用于评估MS中视觉通路完整性和神经血管病理.
- 研究结果表明,视网膜低流可能导致MS中特定区域的神经退行,而RNFL稀释可能反映了更广泛的神经退行.
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