Cross-reactivity between terrestrial snails (Helix species) and house-dust mite (Dermatophagoides pteronyssinus). I. In vivo study.
Clinical reports have suggested an unusual frequency in the number of patients with food allergy to snails who are also allergic to the house-dust mite (HDM).
As allergy to HDM is one of the most frequent sensitizations in atopic patients of Western countries, evaluation of the relevance of the concomitant sensitization to Dermatophagoides pteronyssinus and to snails is an important consideration.
To evaluate the responsibility of different snail components and of snail mites for inducing in vivo hypersensitivity in patients allergic to HDM, the in vivo reactivity of patients with clinical symptoms after ingestion of snails was assessed by skin prick tests with extracts and hemolymph from four different Helix species snails, and extracts from the snail parasitic mite, Riccardoella limacum.
In addition, to obtain epidemiologic data on cosensitization to HDM and snails in allergic patients, the frequency of snail sensitization and its relationship to HDM sensitization were determined in a population of 169 allergic children.
All patients allergic to snails had positive skin prick tests to the snail extracts and none to R. limacum extract.
The number of positive skin reactions did not significantly differ whatever the species, snail part, or heating procedure used.
The strongest reactions were obtained with Helix pomatia (Burgundy snail). (...)
Mots-clés Pascal : Allergène, Poussière maison, Aliment, Réaction croisée, Escargot, Gastropoda, Mollusca, Invertebrata, Allergie, Dermatophagoides pteronyssinus, Pyroglyphidae, Acaridida, Acariformes, Acari, Arachnida, Arthropoda, Helix, Helicidae, Pulmonata, Homme, Epidémiologie, France, Europe, Immunopathologie, Riccardoella limacum, Pneumallergène
Mots-clés Pascal anglais : Allergen, House dust, Food, Cross reaction, Snail, Gastropoda, Mollusca, Invertebrata, Allergy, Dermatophagoides pteronyssinus, Pyroglyphidae, Acaridida, Acariformes, Acari, Arachnida, Arthropoda, Helix, Helicidae, Pulmonata, Human, Epidemiology, France, Europe, Immunopathology, Aeroallergen
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0162067
Code Inist : 002B06C01. Création : 21/07/1998.