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"Cyst-like" structures within the ciliary shafts in children with bronchiectasis
M Pifferi1, A M Cangiotti, D Caramella
1Dept of Pediatrics, University of Pisa, Pisa, Italy. m.pifferi@med.unipi.it
The European Respiratory Journal
|June 29, 2004
Summary
Cyst-like structures in cilia are often secondary to chronic airway inflammation in children with bronchiectasis. This defect is reversible, particularly in cases of secondary ciliary dyskinesia.
Area of Science:
- Pediatric Pulmonology
- Cell Biology
- Medical Imaging
Background:
- Bronchiectasis in children is often linked to ciliary dysfunction.
- Previous studies suggested "cyst-like" structures in cilia as a primary cause of bronchiectasis.
Purpose of the Study:
- To investigate the presence and nature (primary vs. secondary) of "cyst-like" ciliary structures in pediatric bronchiectasis.
- To correlate these structures with disease severity and inflammation.
Main Methods:
- High-resolution computed tomography (HRCT) for bronchiectasis assessment.
- Nasal biopsies for transmission electron microscopy (TEM) and ciliary motion analysis.
- Evaluation of 45 children with recurrent lower airway infections.
Main Results:
- Bronchiectasis detected in 77.8% of patients via HRCT.
- "Cyst-like" structures found in 64.4% of patients via TEM.
- These structures correlated with chronic inflammation and disease severity, appearing in both primary and secondary ciliary dyskinesia.
Conclusions:
- The reversibility of "cyst-like" ciliary structures suggests a secondary origin, likely due to chronic airway inflammation.
- This finding contrasts with previous reports and highlights inflammation's role in pediatric bronchiectasis pathogenesis.