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Asthma: Pathogenesis and Management

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: Introduction

Asthma-I: Introduction

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...

Asthma-II: Pathophysiology and Classification

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-III: Symptoms and Complications

Asthma-III: Symptoms and Complications

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

Asthma I: Introduction

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...

Asthma III: Clinical Manifestations

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...

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A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

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Severe asthma: lessons from the Severe Asthma Research Program.

Sally E Wenzel¹, William W Busse,

¹University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA. wenzelse@upmc.edu

The Journal of Allergy and Clinical Immunology

|January 9, 2007

Summary

This summary is machine-generated.

Severe asthma patients are difficult to study due to small numbers. A network approach successfully recruited nearly 800 subjects for critical research into severe asthma causes and treatments.

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Published on: April 13, 2010

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Murine Model of Allergen Induced Asthma

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Published on: May 14, 2012

Area of Science:

Pulmonology and Respiratory Medicine
Clinical Research Networks
Asthma Pathogenesis

Background:

Severe asthma affects a small subset of patients, presenting significant treatment challenges.
Understanding the distinct characteristics of severe asthma is crucial for developing targeted therapies.
Existing research is limited by the small patient populations typically studied.

Purpose of the Study:

To establish a collaborative network for studying severe asthma.
To identify factors differentiating severe asthma from milder forms.
To facilitate adequately powered research into severe asthma.

Main Methods:

The National Heart, Lung, and Blood Institute established the Severe Asthma Network (Severe Asthma Research Program) in 2001.
A network approach utilizing shared protocols, samples, and data was employed.
Nearly 800 subjects were recruited within four years.

Main Results:

The Severe Asthma Network successfully recruited a substantial cohort of subjects with severe asthma.
The recruitment of nearly 800 subjects in under four years demonstrates the feasibility of the network approach.
This cohort provides a foundation for addressing key differences in severe asthma.

Conclusions:

Network-based research is effective for studying rare or difficult-to-recruit patient groups like severe asthma.
The Severe Asthma Network has created a valuable resource for future investigations.
Further studies will explore inflammatory, infectious, genetic, and distal lung factors in severe asthma pathogenesis.