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Summary
Researchers measured total and specific immunoglobulin E (IgE) in serum and nasal secretions of patients with vasomotor rhinitis. IgE levels were lower in nasal secretions than in serum, suggesting localized allergic responses.
Area of Science:
- Allergy and Immunology
- Otorhinolaryngology
Background:
- Vasomotor rhinitis is a condition affecting the nasal passages.
- Asthma often co-exists with allergic rhinitis, but this study focused on non-asthmatic patients.
Purpose of the Study:
- To investigate the levels of total and specific immunoglobulin E (IgE) in both serum and nasal secretions.
- To evaluate the diagnostic utility of these measurements in vasomotor rhinitis.
- To explore the concept of localized allergy in the nasal passages.
Main Methods:
- Twenty-five subjects with vasomotor rhinitis (21 perennial allergic, 4 seasonal allergic) underwent a Carbacholine nasal challenge test.
- Total and specific IgE levels were quantified in serum and pure, non-diluted nasal secretions.
Main Results:
- Levels of total and specific IgE were found to be lower in nasal secretions compared to serum.
- This finding suggests a potential difference in allergic marker concentration between systemic circulation and local nasal environment.
Conclusions:
- Measurements of IgE in nasal secretions may offer insights into localized allergic reactions within the nasal mucosa.
- The study discusses the diagnostic usefulness of these findings and supports the concept of "localized allergy" in vasomotor rhinitis.