Document Detail


Food allergy: nuts and tree nuts.
MedLine Citation:
PMID:  17125539     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Nuts are a well-defined cause of food allergy, which affect approximately 1 % of the general population in the UK and the USA. There do appear to be differences in the frequency of nut allergy between different countries because of different dietary habits and cooking procedures. For example, in the USA and France, peanuts are one of the most frequent causes of food allergy, but in other countries, it seems to be less common. Genetic factors, in particular, appear to play a role in the development of peanut allergy. While the majority of nut allergens are seed storage proteins, other nut allergens are profilins and pathogenesis-related protein homologues, considered as panallergens because of their widespread distribution in plants. The presence of specific IgE antibodies to several nuts is a common clinical finding, but the clinical relevance of this cross-reactivity is usually limited. Allergic reactions to nuts appear to be particularly severe, sometimes even life-threatening, and fatal reactions following their ingestion have been documented. Food allergy is diagnosed by identifying an underlying immunological mechanism (i.e. allergic testing), and establishing a causal relationship between food ingestion and symptoms (i.e. oral challenges). In natural history investigations carried out in peanut-allergic children, approximately 20 % of the cases outgrew their allergy or developed oral tolerance. The treatment of nut allergies should include patient and family education about avoiding all presentations of the food and the potential for a severe reaction caused by accidental ingestion. Patients and families should be instructed how to recognise early symptoms of an allergic reaction and how to treat severe anaphylaxis promptly.
Authors:
Jesus F Crespo; John M James; Consuelo Fernandez-Rodriguez; Julia Rodriguez
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  The British journal of nutrition     Volume:  96 Suppl 2     ISSN:  0007-1145     ISO Abbreviation:  Br. J. Nutr.     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-11-27     Completed Date:  2007-06-07     Revised Date:  2008-03-28    
Medline Journal Info:
Nlm Unique ID:  0372547     Medline TA:  Br J Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  S95-102     Citation Subset:  IM    
Affiliation:
Hospital Universitario Doce de Octubre, Madrid, Spain. jfernandezc.hdoc@salud.madrid.org
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MeSH Terms
Descriptor/Qualifier:
Humans
Immunoglobulin E / immunology
Nut Hypersensitivity* / diagnosis,  epidemiology,  immunology,  therapy
Chemical
Reg. No./Substance:
37341-29-0/Immunoglobulin E
Comments/Corrections
Erratum In:
Br J Nutr. 2008 Feb;99(2):447-8

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