Nut sensitization profile in Southern Taiwan

Area of Science:

• Allergy and Immunology
• Clinical Medicine
• Epidemiology

Background:

• Atopic diseases, including asthma, allergic rhinitis, and atopic dermatitis, are common.
• Food allergies, particularly to peanuts and tree nuts, are significant concerns.
• Understanding the link between specific food allergens and clinical manifestations is vital for diagnosis and management.

Purpose of the Study:

• To investigate the association between serum-specific immunoglobulin E (IgE) levels for peanuts and tree nuts.
• To determine the relationship between sensitization to these nuts and the clinical presentation of atopic diseases.

Main Methods:

• Serum samples were collected from patients with asthma, allergic rhinitis (AR), or atopic dermatitis (AD).
• Specific IgE levels to peanuts, cashew nuts, Brazil nuts, almonds, and coconuts were measured.
• Individuals with specific IgE ≥ 0.35 kU/L were considered sensitized and analyzed for clinical correlations.

Main Results:

• Peanut/tree nut sensitization was associated with a higher prevalence of atopic dermatitis but not allergic rhinitis.
• Sensitization to peanuts and Brazil nuts showed a significantly higher prevalence of asthma compared to non-sensitized individuals.
• Logistic regression confirmed positive associations between peanut and Brazil nut sensitization and asthma, independent of other atopic conditions.

Conclusions:

• Sensitization to specific food allergens like peanuts and Brazil nuts may predispose individuals to asthma.
• These findings highlight the importance of considering food allergen sensitization in asthma diagnosis, particularly in Asian populations.
• Further attention to these specific allergens is warranted for improved clinical outcomes.