Asthma transition from childhood into adulthood

Area of Science:

• Respiratory Medicine
• Pediatric Pulmonology
• Allergy and Immunology

Background:

• Asthma is a common chronic respiratory disease with varied presentations in children and adults.
• Distinguishing asthma phenotypes is challenging due to differing phenotyping methods and accessibility of lower airway samples in pediatric studies.
• While many children experience symptom remission, adult-onset or persistent asthma occurs, influenced by factors like genetics, early-life infections, and allergic diseases.

Purpose of the Study:

• To explore the complexities of asthma phenotypes across different age groups.
• To investigate the factors contributing to symptom persistence, remission, and adult-onset asthma.
• To highlight the need for standardized molecular approaches in pediatric and adult asthma research.

Main Methods:

• Review of existing literature on asthma phenotyping in children and adults.
• Analysis of risk factors for asthma persistence, remission, and adult-onset.
• Discussion of the limitations in current pediatric asthma research regarding airway sampling.

Main Results:

• A significant proportion of children experience asthma remission, often linked to male sex and milder, less allergic disease.
• Airway hyper-responsiveness and inflammation may persist even after symptom remission.
• Adult-onset asthma and symptom relapse are associated with allergic sensitization, airway hyper-responsiveness, and potentially childhood origins, with smoking being a contributing factor.

Conclusions:

• Asthma is a complex syndrome with diverse trajectories from childhood to adulthood.
• The distinction between symptom remission and underlying pathology resolution requires further investigation.
• Standardized, longitudinal molecular studies integrating pediatric and adult populations are crucial for advancing asthma understanding and treatment.