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[Specific IgG and specific IgG subclass in allergic rhinitis].

S Hong1

  • 1First Affiliated of Chongqing University of Medical Sciences, Chongqing 400016.

Lin Chuang Er Bi Yan Hou Ke Za Zhi = Journal of Clinical Otorhinolaryngology
|March 27, 2001
PubMed
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Caddis fly allergic rhinitis patients show elevated specific IgE and IgG2/IgG4 levels. Treatment significantly reduced these specific antibody levels, indicating their role in allergic rhinitis.

Area of Science:

  • Immunology
  • Allergology

Background:

  • Allergic rhinitis is a common condition often triggered by environmental allergens.
  • Caddis fly exposure is a potential cause of allergic rhinitis in susceptible individuals.

Purpose of the Study:

  • To investigate the role of specific immunoglobulin E (IgE) and IgG subclasses in caddis fly allergic rhinitis.
  • To evaluate the changes in these antibody levels following treatment.

Main Methods:

  • Enzyme-linked immunosorbent assay (ELISA) was used to measure total IgE, caddis fly specific IgE, and caddis fly specific IgG subclasses (IgG2, IgG4).
  • Sixty patients diagnosed with caddis fly allergic rhinitis were included in the study.
  • Antibody levels were compared between patients and controls, and before and after treatment.

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Main Results:

  • Patients with caddis fly allergic rhinitis exhibited significantly higher levels of specific IgE compared to controls (P < 0.001).
  • Elevated levels of specific IgG2 and IgG4 were also observed in patients.
  • Treatment led to a significant reduction in specific IgE (30.60 ± 0.78 vs. 1.58 ± 0.44, P < 0.001) and specific IgG4 (383.31 ± 96.48 vs. 233.68 ± 80.94, P < 0.001) levels.

Conclusions:

  • Specific IgE and IgG subclasses (IgG2, IgG4) are significantly associated with caddis fly allergic rhinitis.
  • Treatment effectively reduces specific antibody levels, suggesting their etiological relevance.
  • Specific IgG subclasses demonstrate notable etiologic specificity and sensitivity in diagnosing caddis fly allergy.