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Mucosal Inflammatory Memory in Chronic Rhinosinusitis.

Min-Seok Koo1, Sungmin Moon1, Min-Seok Rha1

  • 1Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.

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|December 17, 2024
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Summary

Chronic rhinosinusitis (CRS) often recurs after treatment. Mucosal inflammatory memory in sinonasal cells may explain this recurrence, offering new therapeutic targets for refractory CRS.

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Area of Science:

  • Immunology
  • Otolaryngology
  • Pathophysiology

Background:

  • Chronic rhinosinusitis (CRS) treatments show promise but long-term recurrence persists.
  • Refractory CRS poses a significant healthcare challenge due to frequent symptom relapse.
  • Discontinuation of biologics can lead to symptom exacerbation in CRS patients.

Purpose of the Study:

  • To review current understanding of mucosal inflammatory memory in CRS.
  • To explore inflammatory memory as a mechanism for CRS recurrence.
  • To discuss the role of cellular components in sinonasal inflammatory memory.

Main Methods:

  • Literature review of recent advancements in CRS management.
  • Analysis of studies on immune and non-immune cell functions in CRS pathophysiology.
  • Synthesis of knowledge on adaptive immune memory and trained immunity in CRS.

Main Results:

  • Mucosal inflammatory memory is a potential driver of CRS recurrence.
  • Both immune and non-immune sinonasal cells contribute to CRS pathogenesis.
  • Understanding cellular inflammatory memory may guide refractory CRS management.

Conclusions:

  • Inflammatory memory, encompassing adaptive immunity and trained immunity, is a key factor in CRS.
  • Targeting sinonasal mucosal inflammatory memory could improve outcomes for refractory CRS.
  • Further research into cellular mechanisms of inflammatory memory is crucial for advancing CRS treatment.