基础科学和病原发生学
Ian Michael Oh1, Song Hua Li1, Felipe Luiz Pereira1
1Memory and Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
截断的 (tr-tau) 在阿尔茨海默氏症中出现的时间早于高化 (p-tau).
科学领域:
- 神经科学是一个神经科学.
- 病理学 病理学 病理学
- 生物化学 生物化学
背景情况:
- 阿尔茨海默病 (AD) 病理的特征是高酸化 (p-tau).
- 其他tau后翻译修饰 (PTMs) 的作用,比如caspase-6截断的tau (tr-tau),不太了解.
- 在AD神经元中,tr-tau很普遍,但其与p-tau的时间关系尚不清楚.
研究的目的:
- 在阿尔茨海默氏病的进展过程中调查tr-tau相对于p-tau的沉积模式.
- 为了确定tr-tau是否是AD的早期病理标志物.
- 评估受影响大脑区域中tr-tau和p-tau的局部化.
主要方法:
- 分析了56个死后人类脑组织病例,跨越所有布拉克阶段 (0-6).
- 使用多重免疫光检测tr-tau (D13,D402,TauC3) 和p-tau (PHF1) 种类.
- 在脑内皮层 (EC) 和状回形下部 (ITG) 中量化了神经病理和局部化.
主要成果:
- 在EC和ITG中,D13 tr-tau比p-tau更早被检测出来.
- 在早期的布拉克阶段,tr-tau负荷超过了p-tau负荷.
- 在整个疾病进展过程中,观察到tr-tau和p-tau之间的最小局部化.
结论:
- 在AD中,tr-tau作为一个独立的病理特征出现,先于p-tau.
- tr-tau代表了阿尔茨海默病进展的明显早期标志物.
- tr-tau是阿尔茨海默病的潜在新型治疗点.
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


