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Related Concept Videos

COPD: Pathogenesis and Clinical Features01:20

COPD: 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...
Chronic Obstructive Pulmonary Disease I: Introduction01:23

Chronic 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...
Chronic Obstructive Pulmonary Disease-I: Introduction01:20

Chronic 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.
Chronic Obstructive Pulmonary Disease01:24

Chronic Obstructive Pulmonary Disease

COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic 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

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Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing (ChIP-seq)
09:52

Generation of High Quality Chromatin Immunoprecipitation DNA Template for High-throughput Sequencing (ChIP-seq)

Published on: April 19, 2013

Candidate genes for COPD in two large data sets.

P S Bakke1, G Zhu, A Gulsvik

  • 1Dept of Thoracic Medicine, Haukeland University Hospital, Bergen, Norway. per.bakke@med.uib.no

The European Respiratory Journal
|June 22, 2010
PubMed
Summary
This summary is machine-generated.

This study identified novel genetic associations for chronic obstructive pulmonary disease (COPD) and its related lung function traits. Replication in independent cohorts strengthens the findings for STAT1, NFKBIB/SIRT2, and GC genes in COPD.

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Area of Science:

  • Genetics
  • Pulmonology
  • Epidemiology

Background:

  • Reproducibility is a challenge in genetic association studies for complex diseases like COPD.
  • Identifying genetic factors influencing COPD susceptibility and severity is crucial for understanding disease mechanisms.

Purpose of the Study:

  • To investigate the association of 257 polymorphisms in 16 genes with COPD and its phenotypes.
  • To replicate significant genetic associations in an independent family-based cohort.

Main Methods:

  • A case-control study genotyped 257 polymorphisms in 953 COPD cases and 956 controls.
  • Associations were tested for a binary COPD phenotype and quantitative traits (FEV₁ % predicted, FEV₁/FVC).
  • Significant findings were validated in a second family-based study of 1,910 individuals.

Main Results:

  • STAT1 (rs13010343) and NFKBIB/SIRT2 (rs2241704) were significantly associated with the binary COPD phenotype in both populations.
  • GC gene polymorphisms (rs17467825 and rs1155563) were associated with FEV₁ % predicted and FEV₁/FVC, respectively.
  • Replication confirmed associations for STAT1, NFKBIB/SIRT2, and GC genes, with STAT1 and NFKBIB/SIRT2 associations being novel.

Conclusions:

  • This study successfully replicated genetic associations for COPD phenotypes in STAT1, NFKBIB/SIRT2, and GC genes.
  • The identified associations, particularly for STAT1 and NFKBIB/SIRT2, offer new insights into COPD pathogenesis.
  • These findings contribute to a more robust understanding of the genetic architecture of COPD.