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Clinical manifestations, co-sensitizations, and immunoblotting profiles of buckwheat-allergic patients.
MedLine Citation:
PMID:  20804471     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
BACKGROUND:   Buckwheat allergy is a rare food allergy in Europe and North America, whereas it is often described and studied in Asia. The aim of this study was to describe a series of patients with proven buckwheat allergy evaluated in an Italian allergy clinic. Co-sensitization to other food and inhalant allergens and immunoblotting profiles of buckwheat-allergic patients were studied.
METHODS:   Patients with suspected buckwheat allergy who attended the allergy clinic between January 1, 2006, and September 30, 2008, were evaluated. All patients underwent skin prick tests for a standard panel of inhalant and food allergens, prick-by-prick with buckwheat flour, buckwheat-specific IgE determinations, and double-blind placebo-controlled food challenge (DBPCFC) with buckwheat flour. Immunoblotting with buckwheat flour extract was performed on sera from buckwheat-allergic patients.
RESULTS:   Among 72 patients with suspected buckwheat allergy, 30 (41.7%) were sensitized to buckwheat and 24 had a positive DBPCFC. The mean buckwheat IgE level was 6.23 kUA/l (range, 0.16 to >100 kUA/l). Several IgE-binding proteins were identified and grouped into three patterns: a 16-kDa band in patients with predominantly gastrointestinal symptoms with grass and wheat flour co-sensitization, a 25-kDa band in patients with predominantly cutaneous symptoms and a low frequency of co-sensitization, and a 40-kDa band in patients with anaphylaxis and a low frequency of co-sensitization.
CONCLUSIONS:   Buckwheat allergy is an emerging food allergy in Italy. We identified three distinct patterns of clinical and laboratory characteristics, suggesting that specific allergens could be more frequently associated with clinical manifestations of different severity.
Authors:
E Heffler; F Nebiolo; R Asero; G Guida; I Badiu; S Pizzimenti; C Marchese; S Amato; G Mistrello; F Canaletti; G Rolla
Publication Detail:
Type:  Journal Article     Date:  2010-08-30
Journal Detail:
Title:  Allergy     Volume:  66     ISSN:  1398-9995     ISO Abbreviation:  Allergy     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7804028     Medline TA:  Allergy     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  264-70     Citation Subset:  IM    
Copyright Information:
© 2010 John Wiley & Sons A/S.
Affiliation:
Allergy and Clinical Immunology, University of Torino, ASO Mauriziano Umberto I, Largo Turati 62, Turin, Italy. enrico_heffler@yahoo.it
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