线粒体DNA拷贝数的变化导致喘风险,严重程度和恶化
Weiling Xu1, Yun Soo Hong2, Bo Hu3
1Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio.
The Journal of allergy and clinical immunology
|September 5, 2024
概括
线粒体DNA复制数 (mtDNA-CN) 在喘患者中较低,表明功能障碍. 较低的mtDNA-CN与喘患病率和恶化有关,这表明独立于炎症的遗传联系.
科学领域:
- 肺部医学 肺部医学
- 遗传学 是一个遗传学.
- 线粒体生物学 线粒体生物学
背景情况:
- 喘病理生理学涉及线粒体功能障碍.
- 线粒体DNA拷贝数 (mtDNA-CN) 作为线粒体功能的标记.
- 较低的mtDNA-CN通常意味着线粒体功能受损.
研究的目的:
- 为了确定减少的mtDNA-CN是否与喘诊断相关.
- 调查mtDNA-CN水平与喘严重程度之间的关联.
- 探索mtDNA-CN与喘恶化之间的联系.
主要方法:
- 从两个大队伍的血液样本中分析mtDNA-CN:英国生物银行 (UKB) 和严重喘研究计划 (SARP).
- 在UKB队列中,包括39,147名喘患者和302,302名对照患者.
- SARP队列包括1283名喘患者和703名非严重喘患者.
主要成果:
- 与UKB队列中的非喘对照相比,喘患者的mtDNA-CN显著降低.
- 较低的mtDNA-CN与喘患病率有关,但在任何一个队列中都没有严重程度.
- 在SARP中进行的一年纵向分析显示,较高的mtDNA-CN与喘恶化风险降低有关.
- 较低mtDNA-CN与喘之间的关联独立于一般炎症或氧化应激标志物.
- 门德尔的随机化表明,在喘中对mtDNA-CN的潜在因果遗传影响.
结论:
- 与健康人相比,喘患者的mtDNA-CN值较低.
- 减少mtDNA-CN与喘恶化的风险增加有关.
- 在喘中观察到的低mtDNA-CN似乎受遗传倾向而不是炎症的影响.
相关概念视频
Animal Mitochondrial Genetics
7.5K
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
7.5K
Comparing Copy Number Variations and SNPs
17.7K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.7K
Asthma-I: Introduction
2.6K
Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
2.6K
Asthma-III: Symptoms and Complications
2.5K
Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
Classification of Asthma
2.5K
Asthma-II: Pathophysiology and Classification
2.6K
Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
2.6K
Asthma: Pathogenesis and Management
374
Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
374


