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Related Experiment Videos

Upper airway epithelial structural changes in obstructive sleep-disordered breathing.

Friedrich P Paulsen1, Philipp Steven, Michael Tsokos

  • 1Institute of Anatomy, Christian Albrecht University of Kiel, Olshausenstrasse 40, D-24098 Kiel, Germany. fpaulsen@anat.uni-kiel.de

American Journal of Respiratory and Critical Care Medicine
|August 21, 2002
PubMed
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Structural changes in the uvula mucosa, including epithelial alterations and immune cell infiltration, may contribute to upper airway collapsibility in patients with snoring and obstructive sleep apnea (OSA). These findings suggest trauma from snoring impacts airway structure.

Area of Science:

  • Otorhinolaryngology
  • Sleep Medicine
  • Pathology

Background:

  • Upper airway collapsibility in snoring and obstructive sleep apnea (OSA) has unclear origins.
  • Structural mucosal changes are potential contributing factors to airway collapsibility.

Purpose of the Study:

  • To investigate pathologic changes in the epithelium and epithelial-connective tissue interface in patients with snoring and/or OSA.
  • To determine if structural differences exist compared to non-snoring controls.

Main Methods:

  • Scanning electron microscopy (SEM) of uvulae from snoring/OSA patients and controls.
  • Immunohistochemistry for cytokeratins and laminin.
  • Analysis of leukocyte infiltration in the lamina propria.

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Main Results:

  • SEM revealed significant structural differences in the epithelial-connective tissue boundary in patients versus controls.
  • Differential expression of cytokeratin 13 was observed between groups.
  • Significant diffuse infiltration of leukocytes, primarily T cells, was found in the lamina propria of patients, but not controls.

Conclusions:

  • Progressive structural changes in the uvula mucosa, potentially due to snoring trauma, may contribute to upper airway collapsibility.
  • These findings support a link between mucosal pathology and the development of OSA and snoring.