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Related Experiment Videos

Telomerase in nasal polyps.

Yue-Shih Chen1, Martin Westhofen, Johann Lorenzen

  • 1Department of Otorhinolaryngology and Plastic Surgery, University Hospital Aachen, Medical Faculty RWTH Aachen, Aachen, Germany. ychen@ukaachen.de

American Journal of Rhinology
|July 12, 2007
PubMed
Summary
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Telomerase activity is elevated in nasal polyps, indicated by higher human telomerase reverse transcriptase (hTERT) mRNA levels. However, increased hTERT expression does not predict nasal polyposis recurrence after surgery.

Area of Science:

  • Otolaryngology
  • Molecular Biology
  • Oncology

Background:

  • Nasal polyposis is a chronic inflammatory condition.
  • Telomerase plays a role in cell proliferation and cancer.
  • Understanding telomerase in nasal polyps may offer prognostic insights.

Purpose of the Study:

  • To investigate telomerase activity in nasal polyps.
  • To determine the localization of human telomerase reverse transcriptase (hTERT).
  • To assess if elevated hTERT mRNA levels predict surgical outcomes in nasal polyposis.

Main Methods:

  • Quantified hTERT mRNA in nasal polyps (n=21) and controls (inferior turbinates, n=12) using real-time PCR.
  • Used immunohistochemistry to detect hTERT+ cells in polyp tissues.
  • Followed patients for 60 months post-surgery to evaluate recurrence.

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Main Results:

  • Nasal polyps showed significantly higher hTERT mRNA expression and hTERT+ cells compared to controls (p < 0.001).
  • hTERT+ cells were found in epithelial basal layers, endothelium, and seromucous glands.
  • No correlation was found between elevated hTERT levels and polyp recurrence after surgery.

Conclusions:

  • Telomerase activity is upregulated in nasal polyps.
  • Elevated hTERT expression is not a reliable predictor for nasal polyposis recurrence post-surgery.