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Sensitization to Anisakis simplex: an unusual presentation

J L Estrada Rodríguez¹, F Gozalo Reques

¹Unidad de Alergología, Hospital de León, Spain.

Allergologia Et Immunopathologia

|March 1, 1997

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Anisakis simplex (AK) sensitization is linked to asthma, with 20% of patients showing specific IgE. This parasite, commonly found in fish, may trigger allergic reactions and asthma symptoms, especially in those with high seafood consumption.

Area of Science:

Allergy and Immunology
Gastroenterology
Respiratory Medicine

Background:

Anisakis simplex (AK) sensitization is increasingly recognized in patients with urticaria and anaphylaxis.
Prevalence of AK sensitization can reach up to 37% in specific patient groups.

Purpose of the Study:

To investigate the prevalence of AK specific-IgE in asthmatic patients.
To compare AK sensitization rates between asthmatic and urticaria patient groups.
To explore the potential link between AK sensitization and allergic reactions, including asthma exacerbations.

Main Methods:

Prospective study design.
Evaluation of Anisakis simplex (AK) specific-IgE levels.
Comparison between asthmatic and urticaria patient cohorts.

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Recording of food-related complaints and symptoms.

Main Results:

20% (13/66) of the study population showed AK specific IgE.
A significantly higher proportion of asthmatics (9/13) were sensitized to AK compared to urticaria patients (4/13).
Three asthmatic patients reported symptoms like dyspnea and hives after consuming fish or seafood.

Conclusions:

Anisakis simplex (AK) sensitization is prevalent in asthmatic individuals.
AK allergens may play a role in adult asthma, particularly in populations with high fish/seafood consumption.
Sensitization can occur via inhalation or parasitic infection through the digestive tract.