D2.13 - Migratory locust and house cricket as food allergy: cross reactivity or primary sensitivisation

Abstract: A 24 years old male patient with a history of severe allergic rhinitis and chronic urticarie and an episode of anaphylaxis. The patient suffers from allergic rhinitis since childhood. He referres that last six months he had consumed cricket-based products. 

At the the day he had anaphylaxis he had consumed seafood.

Methods: Case Report

Results: skin prick tests were positive response to house dust mite.

IgE specific to allergen components using ALEX2 (MADX) were positive for:

Der f 1: 2.55, Der f 2: 11.45, Der p 1: 23.84, Der p 2: 15.01, Der p 23: 1.03,

Cra c 6: 16.08, Chi spp: 0.92, Lit s: 0.85, Ach d: 1.18, Loc m: 2.35, Ten m: 0.50.

Tropomyosin Der p 10, Arginin kinase Der p 20 were negative.

Tropomyosin Ani s 3 was negative.

Conclusion: It is known that is a cross reactivities between house dust mite and many other antropodes. In this case there are no IgE to the  main molecules which are responisible for the cross reactivity, such as tropomyosin and arginin kinase.