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Upper Respiratory Microbiome in Vasculitis.

A Nikolai von Krusenstiern1, Noam A Cohen2, Rennie L Rhee3

  • 1Department of Internal Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.

Rheumatic Diseases Clinics of North America
|April 17, 2025
PubMed
Summary
This summary is machine-generated.

Microbial imbalances in the upper airway may drive antineutrophil cytoplasmic antibody-associated vasculitis (AAV). Research explores how Staphylococcus aureus and changes in commensal microbes relate to AAV inflammation and disease flares.

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Area of Science:

  • Immunology
  • Microbiology
  • Rheumatology

Background:

  • Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) involves significant upper airway inflammation.
  • The pathogenesis of AAV, including granulomatosis with polyangiitis, remains incompletely understood.
  • The upper airway harbors diverse microbes and is a site for pathogen exposure.

Purpose of the Study:

  • To review the association between upper airway microbial dysregulation and AAV.
  • To explore the role of microbial factors in AAV pathogenesis.
  • To examine the impact of microbial fluctuations on disease activity and flares.

Main Methods:

  • Literature review of studies on AAV and upper airway microbiota.
  • Analysis of the role of Staphylococcus aureus colonization.
  • Investigation of commensal microbe abundance and diversity in relation to AAV.

Main Results:

  • Staphylococcus aureus colonization is implicated as a potential driver of AAV.
  • Alterations in the abundance and diversity of commensal microbes are linked to vasculitis.
  • Microbial dysregulation in the upper airway is a key area of interest for AAV research.

Conclusions:

  • Upper airway microbial dysregulation is a significant factor in the pathogenesis of AAV.
  • Targeting microbial factors, such as Staphylococcus aureus, may offer therapeutic strategies for AAV.
  • Further research into the complex interplay between the microbiome and AAV is warranted.