基础科学和病原发生学
Tamil Iniyan Gunasekaran1, Dolly Reyes-Dumeyer2,3, André Corvelo4
1The Gertrude H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, NY, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
结构变异 (SVs) 导致阿尔茨海默病 (AD) 的遗传性. 这项研究在家族和零星的AD病例中发现了显著的SV,为疾病机制提供了新的见解.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 基因组医学是基因组医学.
背景情况:
- 阿尔茨海默病 (AD) 呈现出复杂的遗传异质性,目前的模型无法完全解释其遗传.
- 提出结构变异 (SVs) 来解释AD遗传性缺失,特别是在疾病病理和家族形式方面,这些是研究不足的.
研究的目的:
- 研究结构变异 (SV) 在阿尔茨海默氏症 (AD) 遗传结构中的作用.
- 为了确定与家族性和零星性AD风险和病理学相关的特定SVs.
主要方法:
- 来自1,162个个体 (ROSMAP研究) 和330个家庭 (197 NHW, 214 CH) 的全基因组测序数据被分析为使用多个SV调用者的大型插入和删除.
- 在ROSMAP队列中对AD风险和病理进行了全基因组的SV关联分析,并在29,055人组成的独立ADSP队列中得到验证.
主要成果:
- 发现9个SVs (一个插入,8个删除) 在AD家族中分离,其中8个删除显示了AD风险的全基因组意义.
- 在复制队列中,在PDCD10附近的插入达到AD风险的全基因组显著性.
- SV-GWAS确定了SVs和AD病理之间的关联,包括与全球脑病理相关的INPP4B插入,以及与特定斑块类型相关的ADGRB1和ARMC2附近的删除.
结论:
- 该研究确定了许多SVs在家族性AD中分离在多种不同人群 (CH和NHW) 中.
- 额外的SV与零星的AD有关,突出了它们在疾病中的更广泛作用.
- 根据功能影响优先考虑SV,这对于理解它们对家族性和零星性AD病原体的贡献至关重要.
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


