基础科学和病原发生学
Fernanda G Q Barros-Aragão1, Luis E Santos1, Talita Pinto2
1D'Or Institute for Research and Education, Rio de Janeiro, RJ, Brazil.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
COVID-19神经病患者的Tau蛋白水平升高,类似于阿尔茨海默病 (AD) 患者,与炎症有关. 持续的炎症和COVID-19后的认知问题可能会增加未来AD风险.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- COVID-19可能会导致神经症状和认知能力下降,阿尔茨海默病 (AD) 会增加COVID-19的严重程度.
- 炎症与COVID-19和AD有关,这表明存在潜在的分子联系.
- 目前尚不清楚COVID-19患有神经问题的患者是否表现出AD相关的分子变化.
研究的目的:
- 为了研究与阿尔茨海默病 (AD) 病理学相关的分子变化,在COVID-19患者中具有神经症状.
- 为了确定COVID-19和AD之间的潜在分子联系,以改善患者的随访和预防策略.
主要方法:
- 对脑脊液 (CSF) 生物标志物 (粉样β,tau) 在对照组,轻度认知障碍,AD和COVID-19患者的神经症状的回顾性分析.
- 脑脊液生物标志物与炎症标志物的相关性 (IL6,SII).
- 血生物标志物 (粉样β,Tau) 和COVID-19幸存者的认知结果在感染后长达一年的前性评估.
主要成果:
- 患有神经症状的COVID-19患者在住院时显示CSF Tau升高,类似于AD患者.
- 在COVID-19患者中没有检测到CSF粉样β或pTau-181水平的显著变化.
- 脑流中的生物标志物和与全身炎症 (SII) 相关联的促炎细胞因子.
- 在COVID-19幸存者中,感染后一年内认知缺陷的血Tau/粉样蛋白-β比率增加.
- 长度等离子体Tau变化受疾病严重程度,炎症和认知缺陷的影响.
结论:
- 炎症是COVID-19患者中观察到的急性和持续的AD相关分子变化的关键因素.
- 患有持续炎症或认知症状的COVID-19幸存者需要仔细监测潜在的未来AD风险.
相关概念视频
Infection
11.6K
When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
11.6K
Urinary Tract Infection II: Pathophysiology
524
The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
524
Cystic Fibrosis: Pathogenesis
676
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
676
Pneumonia II: Pathophysiology
2.5K
The pathophysiology of pneumonia involves the following steps:
2.5K
Stages of Infection
64.7K
Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
64.7K
Defense Against Bacterial Pathogens
2.6K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
2.6K


