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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,...

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-IV: Diagnostic and Management

Asthma-IV: Diagnostic and Management

The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:

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: 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.

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Related Experiment Video

Updated: Jun 27, 2026

Murine Model of Allergen Induced Asthma

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

Biomarkers in asthma.

Anandhi Murugan¹, Curig Prys-Picard, William J Calhoun

¹Pulmonary and Critical Care Medicine, University of Texas Medical Branch, Galveston, Texas 77555-0568, USA.

Current Opinion in Pulmonary Medicine

|December 17, 2008

Summary

This summary is machine-generated.

Biomarkers in asthma, including exhaled nitric oxide (ENO) and sputum, show clinical utility. While exhaled breath condensate (EBC) requires further validation, ENO shows promise for early clinical use in asthma management.

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Published on: April 13, 2010

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Last Updated: Jun 27, 2026

Murine Model of Allergen Induced Asthma

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

Methodology for Sputum Induction and Laboratory Processing

Methodology for Sputum Induction and Laboratory Processing

Published on: December 17, 2017

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

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

Published on: April 13, 2010

Area of Science:

Pulmonary Medicine
Biomarker Research
Respiratory Diseases

Background:

Asthma diagnosis and management rely on understanding various biomarkers.
Biomarkers can be sourced from bronchoalveolar lavage (BAL), sputum, exhaled breath, and blood.
Biomarker performance varies significantly in clinical application.

Purpose of the Study:

To review current literature on the clinical and investigative utility of asthma biomarkers.
To highlight the evolving role of biomarkers in understanding and managing asthma.
To assess the applicability of different biomarker sources.

Main Methods:

Literature review of seminal and current research on asthma biomarkers.
Analysis of biomarkers from exhaled breath (exhaled nitric oxide - ENO, exhaled breath condensate - EBC), sputum, BAL, and blood.
Evaluation of advanced biostatistical and combinatorial analyses in biomarker utility.

Main Results:

Exhaled nitric oxide (ENO) and induced sputum markers are the most validated biomarkers for clinical asthma.
Research on exhaled breath condensate (EBC) focuses on validation and standardization.
Exhaled nitric oxide (ENO) research is advancing towards predictive clinical applications.

Conclusions:

Induced sputum and ENO measurements are currently the best-performing biomarkers for clinical asthma.
ENO shows promise for early clinical adoption in asthma management.
Exhaled breath condensate (EBC) metrics are not yet suitable for clinical use, but BAL, bronchial biopsy, and EBC remain valuable in research settings.