Document Detail


Assessment [correction of Asessment] of the brown Norway rat as a suitable model for the investigation of food allergy.
MedLine Citation:
PMID:  8079365     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have investigated the potential of the inbred Brown Norway (BN) rat as a model for food allergy using two different antigens, ovalbumin (OA) and semi-skimmed milk (SSM). The use of milk-free diet prior to and during exposure to SSM was a key factor in the induction of sensitisation to milk proteins. Investigation of dose received and timing of administration identified a sensitisation regimen using 500 micrograms SSM injected i.p. together with 1 mg CGN (adjuvant) on days 0 and 7 as the optimum conditions for induction of reaginic antibody production. In this model milk proteins were less allergenic than OA as the amount of SSM required to induce sensitivity was 20-fold greater. Examination of antigen-specificity of the IgG and reaginic antibody responses to a range of proteins, present in SSM, showed that the BN rats were capable of recognising a similar profile of allergens as those recognised by milk sensitive humans. Lactoferrin which is present in low concentrations in milk proved as allergenic as the major proteins in milk, the caseins and beta-lactoglobulin. These studies have identified conditions for induction of sensitisation to milk proteins, and have shown the antibody specificity of the response to be similar to that in man. This suggests that the BN rat could provide the basis of a model for the investigation of allergic reactions to food.
Authors:
H A Atkinson; K Miller
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Toxicology     Volume:  91     ISSN:  0300-483X     ISO Abbreviation:  Toxicology     Publication Date:  1994 Aug 
Date Detail:
Created Date:  1994-10-05     Completed Date:  1994-10-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0361055     Medline TA:  Toxicology     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  281-8     Citation Subset:  IM    
Affiliation:
Immunotoxicology Department, BIBRA Toxicology International, Carshalton, Surrey, UK.
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MeSH Terms
Descriptor/Qualifier:
Animals
Antibody Specificity
Disease Models, Animal*
Dose-Response Relationship, Immunologic
Immune Sera / immunology
Immunoglobulin G / biosynthesis
Intradermal Tests
Male
Milk Hypersensitivity / immunology*
Milk Proteins / immunology*
Ovalbumin / immunology
Rats
Rats, Inbred Strains*
Rats, Sprague-Dawley
Reagins / biosynthesis*
Chemical
Reg. No./Substance:
0/Immune Sera; 0/Immunoglobulin G; 0/Milk Proteins; 0/Reagins; 9006-59-1/Ovalbumin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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