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Nitric Oxide and Biological Mediators in Pediatric Chronic Rhinosinusitis and Asthma
Valentina Agnese Ferraro1, Stefania Zanconato1, Eugenio Baraldi1
1Women's and Children's Health Department, University of Padova, via Giustiniani 2, 35128 Padova, Italy.
Insights
Non-invasive biomarkers like nasal nitric oxide (nNO) for chronic rhinosinusitis (CRS) and fractional exhaled nitric oxide (feNO) for asthma show promise. Further research is needed for other mediators in pediatric airway diseases.
Area of Science:
- Pediatric Pulmonology
- Allergy and Immunology
- Biomarker Research
Background:
- The unified airway theory suggests a link between chronic rhinosinusitis (CRS) and asthma.
- Inflammation in these coexisting conditions can be assessed using biomarkers.
- Understanding these biomarkers is crucial for pediatric respiratory health.
Purpose of the Study:
- To review biological mediators studied in pediatric CRS and asthma.
- To report their potential roles in diagnosis and management.
- To highlight the current state of biomarker research in these conditions.
Main Methods:
- Literature review of studies on biomarkers in pediatric CRS and asthma.
- Focused discussion on nasal nitric oxide (nNO), pendrin, and periostin for CRS.
- Analysis of fractional exhaled nitric oxide (feNO), periostin, exhaled breath condensate (EBC), and volatile organic compounds (VOCs) for asthma.
Main Results:
- Nasal nitric oxide (nNO) shows significant potential for CRS diagnosis and management.
- Fractional exhaled nitric oxide (feNO) is highlighted as a key biomarker for asthma.
- Periostin, EBC, and VOCs are identified as promising but require further investigation.
Conclusions:
- Non-invasive biomarkers nNO (for CRS) and feNO (for asthma) appear most informative.
- Additional research is necessary to validate other biological mediators for clinical application.
- Biomarker discovery continues to advance the understanding of unified airway diseases.
Background:
In the context of the so-called unified airway theory, chronic rhinosinusitis (CRS) and asthma may coexist. The inflammation underlying these conditions can be studied through the aid of biomarkers. Main body: We described the main biological mediators that have been studied in pediatric CRS and asthma, and, according to the available literature, we reported their potential role in the diagnosis and management of these conditions. As for CRS, we discussed the studies that investigated nasal nitric oxide (nNO), pendrin, and periostin. As for asthma, we discussed the role of fractional exhaled nitric oxide (feNO), the role of periostin, and that of biological mediators measured in exhaled breath condensate (EBC) and exhaled air (volatile organic compounds, VOCs).
Conclusion:
Among non-invasive biomarkers, nNO seems the most informative in CRS and feNO in asthma. Other biological mediators seem promising, but further studies are needed before they can be applied in clinical practice.
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