长期COVID患者和正常康复患者之间大脑结构和认知表现的差异
Breanna K Nelson1, Lea N Farah1, Ava Grier2
1University of British Columbia, Department of Psychiatry, 2255 Wesbrook Mall Vancouver, BC Canada; British Columbia Children's Hospital Research Institute, 938 West 28th Ave Vancouver, BC Canada; British Columbia Mental Health and Substance Use Services Research Institute, 938 West 28th Ave Vancouver, BC Canada.
NeuroImage
|September 24, 2024
概括
长期COVID患者表现出微妙的白质扩散性变化,但与正常恢复患者相比,没有显著的认知差异. 需要进一步的研究来了解长期COVID的病理生理学.
科学领域:
- 神经科学是一个神经科学.
- 放射学 放射学是一门学科.
- 传染性疾病 传染性疾病
背景情况:
- 长期COVID症状的根本原因仍然在很大程度上是未知的.
- 这项研究调查了长期COVID和大脑白质完整性以及认知功能之间的潜在联系.
- 了解这些因素对于开发有效的长期COVID治疗方法至关重要.
研究的目的:
- 为了比较基线特征,大脑白质扩散性和长期COVID患者和正常COVID-19康复患者之间的认知表现.
- 为了确定与持续的COVID-19后症状相关的客观标志物.
主要方法:
- 对比56名长期COVID患者和35名正常康复个体,使用MRI与扩散张力成像 (DTI).
- 在白质区域中分析了DTI指标 (分数异构,轴向扩散率,平均扩散率,辐射扩散率).
- 使用NIH工具箱认知电池评估认知功能,控制相关共变量.
主要成果:
- 两组之间没有观察到年龄,性别或神经血管风险因素的显著差异.
- 长期COVID组在几个白质区域 (例如,内部囊,冠状辐射) 中显示出明显较低的平均扩散率.
- 尽管存在扩散性差异,但在长期COVID和正常康复组之间没有发现流体认知复合得分的显著差异.
结论:
- 在长期COVID患者中检测到微妙的白质扩散性变化,可能表明小病理,如结或.
- 由于效果大小小,扩散指数的非特异性限制了最终的病理结论.
- 长期COVID患者在客观认知表现上没有显著差异,尽管报告了神经精神症状.
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