Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
Anhui Province Key Laboratory of Biomedical Imaging and Intelligent Processing, Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China.
Alzheimers Dement. 2024 Nov;20(11):7971-7988. doi: 10.1002/alz.14279. Epub 2024 Oct 1.
INTRODUCTION: The angiotensin-converting enzyme 2 (ACE2), which is expressed in cerebral vascular endothelial cells (CVECs), has been currently identified as a functional receptor for SARS-CoV-2. METHODS: We specifically induced injury to ACE2-expressing CVECs in mice and evaluated the effects of such targeted damage through magnetic resonance imaging (MRI) and cognitive behavioral tests. In parallel, we recruited a single-center cohort of COVID-19 survivors and further assessed their brain microvascular injury based on cognition and emotional scales, cranial MRI scans, and blood proteomic measurements. RESULTS: Here, we show an array of pathological and behavioral alterations characteristic of cerebral small vessel disease (CSVD) in mice that targeted damage to ACE2-expressing CVECs, and COVID-19 survivors. These CSVD-like manifestations persist for at least 7 months post-recovery from COVID-19. DISCUSSION: Our findings suggest that SARS-CoV-2 may induce cerebral small vessel damage with persistent sequelae, underscoring the imperative for heightened clinical vigilance in mitigating or treating SARS-CoV-2-mediated cerebral endothelial injury throughout infection and convalescence. HIGHLIGHTS: Cerebral small vessel disease-associated changes were observed after targeted damage to angiotensin-converting enzyme 2-expressing cerebral vascular endothelial cells. SARS-CoV-2 may induce cerebral small vessel damage with persistent sequelae. Clinical vigilance is needed in preventing SARS-CoV-2-induced cerebral endothelial damage during infection and recovery.
简介:血管紧张素转换酶 2(ACE2)在脑血管内皮细胞(CVECs)中表达,目前已被确定为 SARS-CoV-2 的功能性受体。
方法:我们专门诱导表达 ACE2 的 CVEC 小鼠损伤,并通过磁共振成像(MRI)和认知行为测试评估这种靶向损伤的效果。同时,我们招募了一个 COVID-19 幸存者的单中心队列,并进一步根据认知和情绪量表、颅 MRI 扫描和血液蛋白质组学测量评估他们的脑微血管损伤。
结果:在这里,我们展示了一系列与脑小血管疾病(CSVD)特征一致的病理和行为改变,靶向损伤 ACE2 表达的 CVEC 以及 COVID-19 幸存者。这些 CSVD 样表现至少在 COVID-19 康复后持续 7 个月。
讨论:我们的研究结果表明,SARS-CoV-2 可能会引起持续性后遗症的脑小血管损伤,这强调了在感染和康复期间,临床应高度警惕减轻或治疗 SARS-CoV-2 介导的脑内皮损伤的必要性。
重点:在靶向损伤表达血管紧张素转换酶 2 的脑血管内皮细胞后,观察到与脑小血管疾病相关的变化。SARS-CoV-2 可能会引起持续性后遗症的脑小血管损伤。在感染和恢复期间,需要临床警惕预防 SARS-CoV-2 引起的脑内皮损伤。
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