[Four cases of wheat-dependent exercise-induced anaphylaxis with negative gluten cap-rast score].

Abstract

BACKGROUND:

Either omega-5 gliadin or high molecular weight glutenin is known to be a major allergen in wheat-dependent exercise-induced anaphylaxis (WDEIA). It is generally considered that gluten specific IgE score is more reliable than that of wheat specific IgE score for the diagnosis of WDEIA. Our aim was to verify the significance of gluten specific IgE in the diagnosis of WDEIA.

METHODS:

We evaluated the result of gluten CAP-RAST score and omega-5 gliadin specific IgE score on four WDEIA patients who visited our hospital during the years 2004 and 2005, whose diagnosis were onfirmed by prick tests, immunoblot tests and provocation tests.

RESULTS:

Contrary to our expectations, all four patients showed negative gluten CAP-RAST scores, however all patient's omega-5 gliadin specific IgE scores were positive.

CONCLUSION:

Our results suggest that gluten specific CAP-RAST score is unreliable in the diagnosis of WDEIA. On the other hand omega-5 gliadin specific IgE score is possibly a better candidate as a diagnostic tool for WDEIA.

• Authors: Susumu Harada, Maya Iijima, Akiko Nakamura, Yoshitsugu Yoshizaki, Hiroaki Matsuo, Eisin Morita
• Journal: Arerugi = [Allergy] (Arerugi) Vol. 56 Issue 1 Pg. 41-8 (Jan 2007) ISSN: 0021-4884 [Print] Japan
• PMID: 17272957 (Publication Type: Case Reports, Journal Article)

Chemical References

• Allergens
• Antigens, Plant
• omega-5 gliadin, wheat
• Immunoglobulin E
• Glutens
• Gliadin
• glutenin

Topics

• Adult
• Allergens (immunology)
• Anaphylaxis (diagnosis, etiology)
• Antigens, Plant
• Exercise
• Female
• Gliadin (immunology)
• Glutens (chemistry, immunology)
• Humans
• Immunoglobulin E (blood)
• Male
• Middle Aged
• Triticum (immunology)
• Wheat Hypersensitivity (immunology)