Related Experiment Videos
Altered sinonasal ciliary dynamics in chronic rhinosinusitis.
Bei Chen1, Jeffrey Shaari, Steven Eau Claire
1Department of Otorhinolaryngology-Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
American Journal of Rhinology
|July 29, 2006
Summary
Chronic rhinosinusitis (CRS) patients exhibit impaired ciliary adaptation. Unlike controls, their sinonasal cilia show a reduced increase in beat frequency when stimulated, impacting mucus clearance.
Area of Science:
- Otorhinolaryngology
- Respiratory Physiology
Background:
- Chronic rhinosinusitis (CRS) is linked to impaired sinonasal mucociliary clearance.
- Ciliary beat frequency (CBF) normally increases during stress to enhance mucus transport.
- Previous studies on CBF in CRS patients yielded conflicting results, often only assessing basal rates.
Purpose of the Study:
- To compare basal and stimulated sinonasal CBF in CRS patients versus healthy controls.
Main Methods:
- Human sinonasal mucosal explants were analyzed using microscopy and high-speed digital video.
- Both basal and adenosine triphosphate (ATP)-stimulated CBF were measured.
- A dual temperature-controlled perfusion chamber was employed.
Main Results:
- No significant difference in basal CBF was observed between CRS patients and controls.
- ATP stimulation increased CBF by 50-70% in control tissues.
- Explants from CRS patients showed minimal increase in CBF upon ATP stimulation.
Conclusions:
- Dynamic regulation of ciliary activity is crucial for respiratory epithelium adaptation.
- Diminished ciliary adaptation may predispose the sinonasal cavity to infection and inflammation.
- CRS patients demonstrate reduced sinonasal ciliary adaptation to environmental stimuli.