Evidence map›Paper›PMID 25670011›Full record

ArticleThe Journal of allergy and clinical immunology2015

IgG4 inhibits peanut-induced basophil and mast cell activation in peanut-tolerant children sensitized to peanut major allergens.

Alexandra F Santos, Louisa K James, Henry T Bahnson, Mohammed H Shamji, Natália C Couto-Francisco, Sabita Islam, Sally Houghton, Andrew T Clark, Alick Stephens, Victor Turcanu and 3 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of allergy and clinical immunology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 132 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
132citing papers in PubMed, 1 pooled it
19.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

132 citing papers in PubMed, 1 synthesis or guideline pooled it, 261 citations in OpenAlex.

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  6. Progenitor cell-derived basophils: A novel barcoded passive degranulation assay in allergic diseases.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2023
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  7. Peanut-Specific IgG4 and IgA in Saliva Are Modulated by Peanut Oral Immunotherapy.The journal of allergy and clinical immunology. In practice · 2022
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  11. Evolution of epitope-specific IgE and IgGThe Journal of allergy and clinical immunology · 2021
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  16. Immunoglobulin E blockade during food allergen ingestion enhances the induction of inhibitory immunoglobulin G antibodies.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2019
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  17. Ratios of specific IgGClinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2019
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72 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 7 institutions in 3 countries.

Alexandra F SantosDepartment of Pediatric Allergy, Division of Asthma, Allergy & Lung Biology, King's College London, London, United Kingdom; MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom; Immunoallergology Department, Coimbra University Hospital, Coimbra, Portugal; Gulbenkian Programme for Advanced Medical Education, Lisbon, Portugal.
Louisa K JamesMRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom; Randall Division of Cell and Molecular Biophysics, King's College London, London, United Kingdom.
Henry T BahnsonIndependent Biostatistician, Chapel Hill, NC.
Mohammed H ShamjiMRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom; Allergy and Clinical Immunology, MRC & Asthma UK Centre for Allergic Mechanisms of Asthma Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Natália C Couto-FranciscoDepartment of Pediatric Allergy, Division of Asthma, Allergy & Lung Biology, King's College London, London, United Kingdom; MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.
Sabita IslamDepartment of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom.
Sally HoughtonPathology Partnership at Cambridge University Hospitals, Cambridge, United Kingdom.
Andrew T ClarkDepartment of Allergy, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, United Kingdom.
Alick StephensDepartment of Pediatric Allergy, Division of Asthma, Allergy & Lung Biology, King's College London, London, United Kingdom; MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.
Victor TurcanuDepartment of Pediatric Allergy, Division of Asthma, Allergy & Lung Biology, King's College London, London, United Kingdom; MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom.
Stephen R DurhamMRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom; Allergy and Clinical Immunology, MRC & Asthma UK Centre for Allergic Mechanisms of Asthma Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Hannah J GouldMRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom; Randall Division of Cell and Molecular Biophysics, King's College London, London, United Kingdom.
Gideon LackDepartment of Pediatric Allergy, Division of Asthma, Allergy & Lung Biology, King's College London, London, United Kingdom; MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, United Kingdom. Electronic address: gideon.lack@kcl.ac.uk.
Asthma UK · GBKing's College London · GBAddenbrooke's Hospital · GBBiostatistical Consulting (United States) · USCambridge University Hospitals NHS Foundation Trust · GBImperial College London · GBUniversity of Cambridge · GB

Funding

Medical Research Council G0902018Medical Research Council G1000758Medical Research Council G1100090
6 · The paper itself

Abstract

backgroundMost children with detectable peanut-specific IgE (P-sIgE) are not allergic to peanut. We addressed 2 non-mutually exclusive hypotheses for the discrepancy between allergy and sensitization: (1) differences in P-sIgE levels between children with peanut allergy (PA) and peanut-sensitized but tolerant (PS) children and (2) the presence of an IgE inhibitor, such as peanut-specific IgG4 (P-sIgG4), in PS patients.

methodsTwo hundred twenty-eight children (108 patients with PA, 77 PS patients, and 43 nonsensitized nonallergic subjects) were studied. Levels of specific IgE and IgG4 to peanut and its components were determined. IgE-stripped basophils or a mast cell line were used in passive sensitization activation and inhibition assays. Plasma of PS subjects and patients submitted to peanut oral immunotherapy (POIT) were depleted of IgG4 and retested in inhibition assays.

resultsBasophils and mast cells sensitized with plasma from patients with PA but not PS patients showed dose-dependent activation in response to peanut. Levels of sIgE to peanut and its components could only partially explain differences in clinical reactivity between patients with PA and PS patients. P-sIgG4 levels (P = .023) and P-sIgG4/P-sIgE (P < .001), Ara h 1-sIgG4/Ara h 1-sIgE (P = .050), Ara h 2-sIgG4/Ara h 2-sIgE (P = .004), and Ara h 3-sIgG4/Ara h 3-sIgE (P = .016) ratios were greater in PS children compared with those in children with PA. Peanut-induced activation was inhibited in the presence of plasma from PS children with detectable P-sIgG4 levels and POIT but not from nonsensitized nonallergic children. Depletion of IgG4 from plasma of children with PS (and POIT) sensitized to Ara h 1 to Ara h 3 partially restored peanut-induced mast cell activation (P = .007).

conclusionsDifferences in sIgE levels and allergen specificity could not justify the clinical phenotype in all children with PA and PS children. Blocking IgG4 antibodies provide an additional explanation for the absence of clinical reactivity in PS patients sensitized to major peanut allergens.

Indexed as

AllergensAntibody SpecificityAntigens, PlantArachisBasophilsChildChild, PreschoolFemaleHumansImmune ToleranceImmunoglobulin EImmunoglobulin GMaleMast CellsPeanut HypersensitivityAllergensAntigens, PlantImmunoglobulin EImmunoglobulin GAra h 2basophilbasophil activation testblocking antibodiesIgE inhibitionIgG(4)mast cellspeanutpeanut allergytolerance

Identifiers

PMID25670011
PMCPMC4418748
OpenAlexW1991782145

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.