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Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
Published on: August 7, 2017
Direct measurement of upper airway inflammation in children with chronic rhinosinusitis: implications for asthma
Yesim Y Demirdag1, Hassan H Ramadan
1aDivision of Allergy, Immunology and Rheumatology, Department of Pediatrics, Columbia University Medical Center, New York City, New York bDepartment of Otolaryngology Head and Neck Surgery, West Virginia University, Morgantown, West Virginia, USA.
Insights
Understanding chronic rhinosinusitis (CRS) in children requires more research into upper airway inflammation. Current findings suggest eosinophilic and T-cell driven patterns, potentially linking to asthma symptoms.
Area of Science:
- Immunology
- Otorhinolaryngology
- Pediatrics
Background:
- Chronic rhinosinusitis (CRS) is a prevalent, complex condition affecting both children and adults with incompletely understood mechanisms.
- Inflammatory patterns in the upper airways are key to understanding CRS pathogenesis.
Purpose of the Study:
- To review recent findings on the etiologies and pathogenesis of CRS in children.
- To examine inflammatory patterns in the upper airways of children and adults with CRS.
Main Methods:
- Review of recent studies investigating upper airway inflammation in pediatric and adult CRS.
- Analysis of cytokine patterns and their correlation with clinical symptoms.
Main Results:
- Limited studies in children suggest eosinophilic and T-cell driven inflammation in CRS.
- Upper airway cytokine patterns in children with CRS may correlate with asthma symptoms.
- Adult CRS shows distinct inflammatory patterns: eosinophilic/Th-2 in CRS with polyps, Th-1 in CRS without polyps.
Conclusions:
- Knowledge regarding upper airway tissue inflammation in pediatric CRS is currently limited.
- Further research is essential to elucidate CRS pathogenesis and define subgroups.
- Identifying biological targets for treatment necessitates a deeper understanding of CRS pathophysiology.
Purpose Of Review:
Chronic rhinosinusitis (CRS) is a common heterogenous multifactorial disorder affecting children and adults. The exact mechanism is not completely understood. In this review, we aim to summarize our recent findings regarding etiologies and pathogenesis of CRS in children and review recent studies investigating inflammatory patterns in the upper airways in children and adults with CRS.
Recent Findings:
There are only a few small studies measuring upper airway inflammation in children with CRS. These studies demonstrated more toward eosinophilic and T-cell driven inflammatory pattern. Cytokine patterns in upper airways seem to correlate with asthma symptoms in children with CRS. Adult studies demonstrate eosinophilic and Th-2 (T helper-1) driven inflammation in CRS with nasal polyps and Th-1 (T helper-2) driven inflammation in CRS without nasal polyps.
Summary:
Current knowledge about the characteristics of tissue inflammation in upper airways in children with CRS is limited. More studies are needed to better understand the pathogenesis and better define the subgroups of CRS. The findings of such studies will lead to identifying the biological targets to treat this condition.
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