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Immunological investigation in the adenoid tissues from children with chronic rhinosinusitis

Seung-Youp Shin1, Gil-Soon Choi, Hae-Sim Park

  • 1Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyunghee University, Seoul, Korea.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|June 30, 2009
PubMed

Insights

Pediatric chronic rhinosinusitis (CRS) is linked to increased tissue remodeling markers in adenoid tissues. These findings highlight the role of adenoid inflammation in pediatric CRS.

Area of Science:

  • Immunology
  • Otorhinolaryngology
  • Pathology

Background:

  • Chronic rhinosinusitis (CRS) involves persistent nasal inflammation and tissue remodeling.
  • Adenoidectomy is a common surgical intervention for pediatric CRS.
  • Understanding adenoid tissue changes in pediatric CRS is crucial for treatment.

Purpose of the Study:

  • To investigate the impact of pediatric CRS on adenoid tissue inflammation.
  • To quantify inflammatory cell activation markers and tissue remodeling cytokines in adenoid tissues of children with and without CRS.
  • To correlate CRS severity with specific inflammatory markers.

Main Methods:

  • A prospective controlled study involving 40 pediatric patients undergoing adenotonsillectomy.
  • Immunoassays were performed on adenoid tissue homogenates from 16 children with CRS and 24 controls.
  • Levels of soluble interleukin-2 receptor (sIL-2R), soluble CD23 (sCD23), IL-6, eosinophilic cationic protein (ECP), tryptase, transforming growth factor-beta1 (TGF-beta1), matrix metalloproteinase (MMP)-2, MMP-9, and tissue inhibitor of metalloproteinase (TIMP)-1 were measured.

Main Results:

  • Significantly higher mean levels of sIL-2R, TGF-beta1, MMP-2, MMP-9, and TIMP-1 were observed in adenoid tissues of children with CRS compared to controls (P<0.05).
  • Eosinophilic cationic protein (ECP) levels were significantly elevated in severe CRS cases compared to mild to moderate CRS (P=0.033).
  • These findings indicate increased inflammatory cell activation and tissue remodeling in pediatric CRS.

Conclusions:

  • Pediatric CRS is associated with elevated levels of tissue-remodeling-associated cytokines in adenoid tissues.
  • These molecular changes may contribute to the observed adenoid inflammation in pediatric CRS.
  • The study provides insights into thepathophysiology of pediatric CRS.
Abstract

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