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Serial Changes in Serum Eosinophil-associated Mediators between Atopic and Non-atopic Children after Mycoplasma

Joo-Hwa Kim1, Tae-Shik Cho1, Jin-Hwa Moon1

  • 1Department of Pediatrics, Hanyang University College of Medicine, Seoul, Korea.

Allergy, Asthma & Immunology Research
|September 18, 2014
PubMed
Abstract

Insights

Mycoplasma pneumoniae pneumonia (MP) in children is linked to heightened eosinophil activity, particularly in those with atopy. This eosinophil hyperreactivity persists for at least two months post-infection.

Area of Science:

  • Pediatric Pulmonology
  • Immunology
  • Infectious Diseases

Background:

  • Mycoplasma pneumoniae pneumonia (MP) is a known trigger for asthma exacerbations.
  • Understanding the role of eosinophils in MP is crucial for managing atopic children.

Purpose of the Study:

  • To investigate the impact of MP on eosinophil-related hyperreactivity in atopic children.
  • To compare eosinophil markers between atopic and non-atopic children with MP.

Main Methods:

  • Studied 48 children (3-12 years) with MP: 26 atopic, 22 non-atopic.
  • Measured serial changes in blood eosinophil counts, serum IL-5, and serum ECP.
  • Utilized ELISA for IL-5/ECP and autoanalyzer for eosinophil counts.

Main Results:

  • Atopic children showed significantly higher serum IL-5, ECP, and eosinophil counts post-MP (P≤0.001).
  • Elevated IL-5 and ECP were observed at all time points in atopic patients.
  • Eosinophil counts were higher during recovery and follow-up in atopic children.

Conclusions:

  • MP significantly alters eosinophil counts and related inflammatory markers in atopic children.
  • Evidence suggests eosinophil-related hyperreactivity persists for at least 2 months after MP in atopic individuals.
Keywords:
EosinophilMycoplasma pneumoniaeatopyeosinophil cationic proteininterleukin-5pneumonia

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