Fungal sensitization in nasal polyposis

Area of Science:

• Allergy and Immunology
• Otolaryngology
• Mycology

Background:

• Polyposis may be linked to allergic reactions.
• Fungal sensitization is a potential trigger for inflammatory mechanisms in polyposis, possibly via immunoglobulin (Ig) E-mediated responses or tissue invasion.

Purpose of the Study:

• To investigate the role of fungi in polyposis development.
• To assess fungal allergen sensitivity and local fungal contamination in patients with polyposis.

Main Methods:

• A comparative study involving 190 patients with polyposis and 190 controls.
• Skin prick tests for 12 fungi, total IgE, specific IgE to 15 fungal extracts, and nasal fungal cultures were performed.

Main Results:

• Significant sensitization to specific fungi (Fusarium solani, Penicillium frequentans, Trichophyton mentagrophytes, Candida albicans) was observed in polyposis patients.
• Higher prevalence of fungal-specific IgE in polyposis patients (22.4%) compared to controls (10.1%).
• Nasal fungal culture positivity rates were similar between patients (58.7%) and controls (60%), with no significant difference in in vitro test results.

Conclusions:

• Patients with polyposis demonstrate sensitization to fungal allergens.
• Nasal fungal colonization rates are comparable between polyposis patients and the general population.
• No correlation was found between positive fungal cultures and fungal allergen-specific IgE, suggesting nasal colonization does not induce sensitization.