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Updated: Mar 1, 2026

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
Published on: August 7, 2017
[IMMUNE RESPONSE IN CHRONIC BRONCHIOLITIS OBLITERANS IN CHILDREN]
I Mustafayev1, L Allahverdyeva1, A Bogdanova1
11Research Institute of Lung Diseases, Baku; 2State Medical University, Baku, Azerbaijan; 3Research Institute of Pulmonology of The Pavlov First Saint Petersburg State Medical University, Sankt-Petersburg, Russia.
Children with bronchiolitis obliterans show temporary immune changes during exacerbations, not true immunosuppression. Immune responses normalize during remission, indicating an adequate reaction to infection.
Area of Science:
- Pediatric Immunology
- Respiratory Medicine
- Infectious Diseases
Background:
- Bronchiolitis obliterans is a serious post-infectious airway disease in children.
- Understanding the immune system's role is crucial for managing this condition.
Purpose of the Study:
- To assess cellular and humoral immunity in children diagnosed with bronchiolitis obliterans.
- To differentiate between immune response and immunosuppression during disease exacerbation and remission.
Main Methods:
- Studied 139 children aged 2-14 years with bronchiolitis obliterans.
- Monitored immune parameters including immunoglobulin levels (IgA, IgM), circulating immune complexes, and cytokine profiles (interleukins).
- Compared immune status during acute exacerbation versus remission phases.
Main Results:
- Observed transient, minor immune alterations during exacerbations, including decreased IgA, increased IgM, and elevated circulating immune complexes.
- Detected significant increases in pro- and anti-inflammatory cytokines during the acute phase, normalizing in remission.
- Concluded that observed immune changes are adaptive responses to infection, not indicative of sustained immunosuppression.
Conclusions:
- Bronchiolitis obliterans involves dynamic immune system adjustments rather than a state of immunosuppression.
- Immune profiles normalize as inflammation subsides, reflecting a typical response to viral and bacterial triggers.
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