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Related Concept Videos

Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

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:
Asthma: Pathogenesis and Management01:20

Asthma: Pathogenesis and Management

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 I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
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
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...

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Related Experiment Videos

The search for common pathways underlying asthma and COPD.

Yoshiko Kaneko1, Yohei Yatagai, Hideyasu Yamada

  • 1Department of Pulmonary Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.

International Journal of Chronic Obstructive Pulmonary Disease
|February 5, 2013
PubMed
Summary

Genetic analysis reveals significant overlap in molecular pathways between asthma and chronic obstructive pulmonary disease (COPD), suggesting shared biological mechanisms. These findings highlight common genetic susceptibility factors for both respiratory diseases.

Keywords:
COPDaryl hydrocarbon receptor signalingasthmacommon pathwaysnetwork

Related Experiment Videos

Area of Science:

  • Genetics and Molecular Biology
  • Respiratory Medicine
  • Bioinformatics

Background:

  • Asthma and chronic obstructive pulmonary disease (COPD) share common susceptibility genes and genetic loci.
  • Complex diseases involve intricate networks of gene-gene and gene-environment interactions.
  • Understanding shared pathways is crucial for elucidating the pathobiology of both asthma and COPD.

Purpose of the Study:

  • To identify functional and regulatory pathways central to asthma and COPD pathobiology.
  • To investigate the overlap in molecular and cellular pathways between asthma and COPD.
  • To establish a framework for integrating genomic data for respiratory diseases.

Main Methods:

  • PubMed database search up to September 2012 for genes associated with asthma, COPD, tuberculosis, or essential hypertension.
  • Pathway-based analysis using Ingenuity Pathway Analysis software.
  • Identification and network analysis of susceptibility genes for asthma and COPD.

Main Results:

  • Identified 108 genes for asthma and 58 genes for COPD from independent studies.
  • Grouped genes into 12 asthma and 11 COPD networks, revealing a single complex network with 229 overlapping molecules.
  • Overlapping molecules significantly involved in aryl hydrocarbon receptor signaling, cytokine communication, glucocorticoid receptor signaling, and IL-12 signaling pathways.

Conclusions:

  • Significant network overlap (Jaccard index 0.81) between asthma and COPD suggests shared pathobiology.
  • Identified networks serve as frameworks for integrating genomic and phenotypic data.
  • Further research into these shared pathways can advance understanding and treatment of both diseases.