IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE

Detalhes bibliográficos
Autor(a) principal: Santos, Alexandra F.
Data de Publicação: 2020
Outros Autores: Barbosa-Morais, Nuno, Hurlburt, Barry K., Ramaswamy, Sneha, Hemmings, Oliver, Kwok, Matthew, O’Rourke, Colin, Bahnson, Henry T., Cheng, Hsiaopo, James, Louisa, Gould, Hannah J., Sutton, Brian J., Maleki, Soheila J., Lack, Gideon
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/50032
Resumo: © 2020 The Authors. Allergy published by European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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spelling IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgEAra h 2DiagnosisEpitopesFood allergy peanut allergy© 2020 The Authors. Allergy published by European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.Background: Understanding the discrepancy between IgE sensitization and allergic reactions to peanut could facilitate diagnosis and lead to novel means of treating peanut allergy. Objective: To identify differences in IgE and IgG4 binding to peanut peptides between peanut-allergic (PA) and peanut-sensitized but tolerant (PS) children. Methods: PA (n = 56), PS (n = 42) and nonsensitized nonallergic (NA, n = 10) patients were studied. Synthetic overlapping 15-mer peptides of peanut allergens (Ara h 1-11) were spotted onto microarray slides, and patients' samples were tested for IgE and IgG4 binding using immunofluorescence. IgE and IgG4 levels to selected peptides were quantified using ImmunoCAP. Diagnostic model comparisons were performed using likelihood-ratio tests between each specified nominal logistic regression models. Results: Seven peptides on Ara h 1, Ara h 2, and Ara h 3 were bound more by IgE of PA compared to PS patients on the microarray. IgE binding to one peptide on Ara h 5 and IgG4 binding to one Ara h 9 peptide were greater in PS than in PA patients. Using ImmunoCAP, IgE to the Ara h 2 peptides enhanced the diagnostic accuracy of Ara h 2-specific IgE. Ratios of IgG4/IgE to 4 out of the 7 peptides were higher in PS than in PA subjects. Conclusions: Ara h 2 peptide-specific IgE added diagnostic value to Ara h 2-specific IgE. Ability of peptide-specific IgG4 to surmount their IgE counterpart seems to be important in established peanut tolerance.This work was supported by the Medical Research Council (MRC Clinical Research Training Fellowship G090218, MRC Centenary Early Career Award and MRC Clinician Scientist Fellowship MR/M008517/1, all awarded to A. F. Santos), the Department of Health via the National Institute for Health Research (NIHR) comprehensive Biomedical Research Centre award to Guy's & St Thomas' NHS Foundation Trust in partnership with King's College London and King's College Hospital NHS Foundation Trust; the US Department of Agriculture, Agricultural Research Service (USDA-ARS6054-43440-046-00D; USDA-NIFA) and the National Peanut Board (GRANT12229460).John Wiley & Sons, Inc.Repositório da Universidade de LisboaSantos, Alexandra F.Barbosa-Morais, NunoHurlburt, Barry K.Ramaswamy, SnehaHemmings, OliverKwok, MatthewO’Rourke, ColinBahnson, Henry T.Cheng, HsiaopoJames, LouisaGould, Hannah J.Sutton, Brian J.Maleki, Soheila J.Lack, Gideon2021-10-27T14:08:55Z20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/50032engAllergy. 2020 Sep;75(9):2309-23180105-453810.1111/all.143011398-9995info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T16:54:03Zoai:repositorio.ul.pt:10451/50032Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:01:33.200161Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
title IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
spellingShingle IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
Santos, Alexandra F.
Ara h 2
Diagnosis
Epitopes
Food allergy peanut allergy
title_short IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
title_full IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
title_fullStr IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
title_full_unstemmed IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
title_sort IgE to epitopes of Ara h 2 enhance the diagnostic accuracy of Ara h 2‐specific IgE
author Santos, Alexandra F.
author_facet Santos, Alexandra F.
Barbosa-Morais, Nuno
Hurlburt, Barry K.
Ramaswamy, Sneha
Hemmings, Oliver
Kwok, Matthew
O’Rourke, Colin
Bahnson, Henry T.
Cheng, Hsiaopo
James, Louisa
Gould, Hannah J.
Sutton, Brian J.
Maleki, Soheila J.
Lack, Gideon
author_role author
author2 Barbosa-Morais, Nuno
Hurlburt, Barry K.
Ramaswamy, Sneha
Hemmings, Oliver
Kwok, Matthew
O’Rourke, Colin
Bahnson, Henry T.
Cheng, Hsiaopo
James, Louisa
Gould, Hannah J.
Sutton, Brian J.
Maleki, Soheila J.
Lack, Gideon
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Santos, Alexandra F.
Barbosa-Morais, Nuno
Hurlburt, Barry K.
Ramaswamy, Sneha
Hemmings, Oliver
Kwok, Matthew
O’Rourke, Colin
Bahnson, Henry T.
Cheng, Hsiaopo
James, Louisa
Gould, Hannah J.
Sutton, Brian J.
Maleki, Soheila J.
Lack, Gideon
dc.subject.por.fl_str_mv Ara h 2
Diagnosis
Epitopes
Food allergy peanut allergy
topic Ara h 2
Diagnosis
Epitopes
Food allergy peanut allergy
description © 2020 The Authors. Allergy published by European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-01-01T00:00:00Z
2021-10-27T14:08:55Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10451/50032
url http://hdl.handle.net/10451/50032
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Allergy. 2020 Sep;75(9):2309-2318
0105-4538
10.1111/all.14301
1398-9995
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons, Inc.
publisher.none.fl_str_mv John Wiley & Sons, Inc.
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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