肺移植为CF:低肺细菌负担和免疫媒介在一年中与clad发展相关联
Samantha A Whiteside1, John E McGinniss1, Rebecca A Deek2
1Division of Pulmonary, Allergy and Critical Care, Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, America.
概括
在囊性纤维化 (CF) 患者的肺移植后的第一年,低肺细菌和免疫媒介与慢性肺异位功能障碍 (CLAD) 有关. 早期低细菌负载可能预测CLAD的发展.
科学领域:
- 肺部医学 肺部医学
- 移植免疫学 移植免疫学
- 微生物组研究 微生物组研究
背景情况:
- 囊性纤维化 (CF) 患者通常需要为末期肺部疾病进行肺移植.
- 慢性肺异位移植功能障碍 (CLAD) 是肺移植后移植失败的主要原因.
- 肺微生物组在CLAD发展中的作用,特别是在CF患者中,仍未得到充分研究.
研究的目的:
- 研究早期肺微生物组特征与CF肺移植接受者中CLAD的发展之间的关联.
- 在这个患者群体中探索早期免疫媒介水平和CLAD发育之间的关系.
主要方法:
- 研究了23名CF肺移植接受者的纵向队列.
- 在移植后的第一年内,从供体肺和接受者全移植中采集了肺清洗样品.
- 使用了细菌16S rRNA基因测序,qPCR用于细菌量化,以及用于免疫媒介的多重测试.
- 此外,还对发生CLAD和非CLAD对照患者进行了病例对照研究.
主要成果:
- 患有CLAD的患者在第一年表现出较低的肺细菌负担和典型CF微生物群的相对丰度减少.
- 在第一年,在患者中观察到较低的免疫媒介水平,这些患者后来发展为CLAD.
- 在CLAD发病时,检测到免疫媒介水平升高,但与对照组相比,没有发现显著的微生物群差异.
结论:
- 在CF的肺移植后的第一年,低细菌含量和免疫媒介水平与随后的CLAD发展有关.
- CLAD发病的特点是免疫媒介的增加,但没有明显的微生物组变化.
- 需要进一步的研究来确定早期的气道细菌是否可以作为CF肺移植接受者中CLAD的保护因素或生物标志物.
相关概念视频
01:23Cystic Fibrosis: Pathogenesis
716
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,...
716
01:24Cystic Fibrosis: Management
474
Cystic fibrosis (CF) is an autosomal recessive disorder that predominantly affects individuals of Northern European descent, occurring at a rate of 1 in 3500. It is caused by a genetic mutation in a gene on chromosome 7, most commonly the ΔF508 mutation, that codes for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. This results in thicker mucus secretions and obstruction pathologies in multiple organs, including the lungs and sinuses.
Sinus disease and chronic...
Sinus disease and chronic...
474
01:28Pulmonary Tuberculosis II
1.4K
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
1.4K
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
4.2K
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
4.2K