白质强度过高的改变淋巴功能和脑血管反应:对认知障碍的洞察
Kai Li1, Yueyan Bian2, Yi Xing3
1Department of Neurology, Peking University First Hospital, Beijing 100034, China; Beijing Key Laboratory of Neurovascular Disease Discovery, Beijing 100034, China.
Brain research bulletin
|September 18, 2025
概括
白质超强度 (WMH) 损害了淋巴功能和脑血管反应 (CVR),导致认知能力下降. 针对血管健康和淋巴清除的干预措施可能有助于管理WMH进展和认知缺陷.
科学领域:
- 神经成像是一种神经成像.
- 脑血管健康 脑血管健康
- 神经退行发生神经退行.
背景情况:
- 白质超强度 (WMH) 与认知障碍和脑血管和神经退行性疾病风险增加有关.
- 淋巴系统在WMH病理生理学中至关重要,但其与WMH中脑血管活性 (CVR) 的关系尚不清楚.
研究的目的:
- 研究不同严重程度和认知状态的WMH患者的淋巴功能和CVR.
- 探索WMH患者的淋巴功能,CVR和认知表现之间的关系.
主要方法:
- 124名参与者被分为对照组,没有认知障碍的中度至重度WMH和没有痴呆症的认知障碍的WMH (WMH-CIND).
- 用扩散张力成像分析对周围血管空间 (DTI-ALPS) 和全球血氧水平依赖性脑脊液 (gBOLD-CSF) 从静止状态功能性MRI (rs-fMRI) 的合来评估淋巴功能.
- 脑血管反应 (CVR) 映射来自rs-fMRI,并使用全面电池评估认知表现.
主要成果:
- 随着WMH严重程度和认知障碍的增加,ALPS指数呈现逐步下降 (p < 0.001).
- 与对照组相比,WMH-CIND参与者显示gBOLD-CSF合减少 (p <0.05).
- 观察到前和后区域的CVR变化,在淋巴体指数,区域CVR和认知表现之间存在显著的关联.
结论:
- 研究结果揭示了淋巴管功能障碍,局部CVR障碍和WMH认知衰退之间的复杂相互作用.
- 保持血管健康和优化淋巴清除是管理WMH进展和相关认知缺陷的潜在策略.
更多相关视频
07:30Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
3.4K
05:12A Mouse Model for Vascular Cognitive Impairment and Dementia Based on Needle-guided Asymmetric Bilateral Common Carotid Artery Stenosis
Published on: November 22, 2024
1.4K
相关概念视频
01:22Cerebral Edema ll: Pathophysiology
Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
01:22Dementia l: Introduction
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...