Related Concept Videos
01:20COPD: Pathogenesis and Clinical Features
Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
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
01:23Chronic Obstructive Pulmonary Disease I: Introduction
Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
01:24Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features
Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
01:25Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.
Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
01:20Chronic Obstructive Pulmonary Disease-I: Introduction
Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
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Associations of IL6 polymorphisms with lung function decline and COPD.
J-Q He1, M G Foreman, K Shumansky
1UBC James Hogg iCAPTURE Centre for Cardiovascular and Pulmonary Research, St Paul's Hospital, 1081 Burrard Street, Vancouver, BC, Canada
Thorax
|April 11, 2009
Summary
The Interleukin-6 (IL6) -174G/C single nucleotide polymorphism (SNP) is linked to faster lung function decline and increased chronic obstructive pulmonary disease (COPD) risk in smokers. This genetic variation impacts COPD development and progression.
Area of Science:
- Genetics and Respiratory Medicine
- Molecular Biology and Immunology
Background:
- Interleukin-6 (IL6) is a key pro-inflammatory cytokine implicated in chronic obstructive pulmonary disease (COPD) pathogenesis.
- A functional single nucleotide polymorphism (SNP), -174G/C, exists in the IL6 promoter region.
- IL6 genetic variations may influence COPD susceptibility and lung function in smokers.
Purpose of the Study:
- To investigate the association between IL6 gene polymorphisms and COPD.
- To determine if IL6 SNPs impact lung function decline in smokers.
Main Methods:
- Genotyping of IL6 SNPs in two case-control cohorts from the Lung Health Study (LHS).
- Phenotyping based on forced expiratory volume in 1 second (FEV(1)) decline and baseline FEV(1).
- Genotyping of IL6 SNPs in COPD cases and controls from the National Emphysema Treatment Trial (NETT) and Normative Aging Study (NAS).
Main Results:
- Three IL6 SNPs were associated with FEV(1) decline in the LHS cohort.
- The IL6 -174C allele correlated with a rapid decline in lung function, particularly in genotype analysis (p=0.006).
- The IL6 -174G/C SNP and linked variants were associated with COPD susceptibility in the NETT-NAS study (p<0.04).
Conclusions:
- The IL6 -174G/C SNP is significantly associated with accelerated FEV(1) decline.
- This IL6 SNP is also linked to increased susceptibility to COPD in a smoking population.
- Genetic variations in IL6 may play a crucial role in COPD development and progression.