COVID-19对大脑新陈代谢和连接性的长期影响
Beatrice Bravi1, Marco Paolini2, Federica Colombo1
1Cognitive Neurosciences, Vita-Salute San Raffaele University, Milan, Italy; Psychiatry & Clinical Psychobiology Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy.
Neuroscience
|June 14, 2025
概括
在SARS-CoV-2感染后,大脑的修复可能会发生,由更高的谷氨酸和N-乙酸水平和改善的白质完整性表明. 这表明长期COVID认知障碍的潜在恢复机制.
科学领域:
- 神经科学是一个神经科学.
- 传染性疾病 传染性疾病
- 生物化学 生物化学
背景情况:
- 长期COVID症状,包括认知障碍,在SARS-CoV-2幸存者的很大一部分中持续存在.
- 以前的研究表明,白质 (WM) 微观结构和功能连接性在COVID-19后发生了变化.
- 肌肉质量的完整性与谷氨酸和N-乙酸水平以及认知功能有关.
研究的目的:
- 研究大脑代谢物 (谷氨酸,N-乙酸) 与大脑结构和功能连接的变化之间的关联.
- 探索这些代谢物,WM完整性和COVID-19幸存者的认知功能与健康对照者之间的关系.
主要方法:
- 在COVID-19幸存者和健康对照者 (HC) 之间比较白质 (WM) 微观结构和代谢物水平.
- 研究了WM完整性 (使用分数异构,辐射扩散率,平均扩散率) 和谷氨酸/N-乙酸水平之间的关联.
- 评估了与代谢物水平相关的静止状态功能连接性 (rs-FC).
主要成果:
- COVID-19幸存者表现出更高的谷氨酸和N-乙酸水平,积极影响认知投诉.
- 在幸存者中观察到分数异质性 (FA) 的增加和辐射 (RD) 和平均扩散率 (MD) 的降低.
- 谷氨酸和N-乙酸与FA正相关,与MD/RD负相关.
- FA调节了谷氨酸和认知缺陷之间的关系.
- N-乙酸与特定大脑区域之间的更高的rs-FC有关.
结论:
- 研究结果表明,在SARS-CoV-2感染后,大脑有潜在的修复和复髓化过程.
- 较高的谷氨酸和N-乙酸水平,以及改善的WM微观结构,可能有助于从长期的COVID认知障碍中恢复.
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