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Microbial Communities in Nature and Laboratory - Interview
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Microbial influences on chronic rhinosinusitis.

Barbara M Bröker1, Claus Bachert2

  • 1Institute of Immunology, University Medicine Greifswald, Greifswald, Germany.

The Journal of Allergy and Clinical Immunology
|February 4, 2026
PubMed
Summary
This summary is machine-generated.

Chronic rhinosinusitis (CRS) involves altered nasal microbiomes with increased Staphylococcus aureus. Measuring S. aureus-specific IgE may aid diagnosing CRS and asthma, which share inflammation pathways.

Keywords:
Chronic rhinosinusitisIgES aureus enterotoxinsStaphylococcus aureusnasal microbiomeserine protease-like proteinstype 2 immune reaction

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Area of Science:

  • Microbiology
  • Immunology
  • Otorhinolaryngology

Background:

  • The nasal microbiome is altered in chronic rhinosinusitis (CRS), with higher bacterial density and Staphylococcus aureus abundance.
  • Staphylococcus aureus nasal colonization is influenced by immune control and bacterial evasion mechanisms.

Purpose of the Study:

  • To review determinants of Staphylococcus aureus nasal colonization.
  • To explore the role of Staphylococcus aureus secreted factors like enterotoxins (SE) and serine protease-like proteins (Spls) in CRS and asthma.
  • To propose incorporating S. aureus-specific IgE measurements into routine diagnostics for CRS and asthma.

Main Methods:

  • Literature review on nasal microbiome alterations in CRS.
  • Examination of immune responses to Staphylococcus aureus.
  • Analysis of shared pathomechanisms between CRS and asthma.

Main Results:

  • Staphylococcus aureus is more abundant in the nasal microbiome of CRS patients.
  • Patients with CRS and asthma often exhibit sensitization to S. aureus enterotoxins (SE) and serine protease-like proteins (Spls).
  • Specific IgE production against S. aureus factors influences disease progression in CRS and asthma.

Conclusions:

  • S. aureus plays a significant role in the pathophysiology of CRS.
  • Shared immune responses to S. aureus in CRS and asthma suggest common underlying mechanisms.
  • S. aureus-specific IgE measurement is a potential diagnostic tool for CRS and asthma.