Evidence map›Paper›PMID 23075924›Full record

ArticleInternational archives of allergy and immunology2013

Ara h 2 and Ara h 6 have similar allergenic activity and are substantially redundant.

Xueni Chen, Qian Wang, Rabab El-Mezayen, Yonghua Zhuang, Stephen C Dreskin

Abstract readComparative Study
In one paragraph

Article in International archives of allergy and immunology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
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

19 citing papers in PubMed.

  1. Variable IgE cross-reactivity between peanut 2S-albumins: The case for measuring IgE to both Ara h 2 and Ara h 6.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2019
    Trial
  2. Review
  3. Article
  4. Article
  5. The Effector Function of Allergens.Frontiers in allergy · 2022
    Review
  6. Ara h 2 is the dominant peanut allergen despite similarities with Ara h 6.The Journal of allergy and clinical immunology · 2020
    Article
  7. Review
  8. Human monoclonal antibodies to Ara h 2 inhibit allergen-induced, IgE-mediated cell activation.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2019
    Article
  9. Article
  10. Article
  11. Review
  12. Conformational IgE epitopes of peanut allergens Ara h 2 and Ara h 6.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2016
    Article
  13. Epitope analysis of Ara h 2 and Ara h 6: characteristic patterns of IgE-binding fingerprints among individuals with similar clinical histories.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2015
    Article
  14. The molecular basis of peanut allergy.Current allergy and asthma reports · 2014
    Article
  15. Cross-reactivity of peanut allergens.Current allergy and asthma reports · 2014
    Review
  16. Article
  17. Developing therapies for peanut allergy.International archives of allergy and immunology · 2014
    Review
  18. Redefining the major peanut allergens.Immunologic research · 2013
    Review
  19. Review
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

5 authors.

Xueni ChenDivision of Allergy and Clinical Immunology, Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA.
Qian Wang
Rabab El-Mezayen
Yonghua Zhuang
Stephen C Dreskin

Funding

Colorado Clinical and Translational Sciences InstituteUL1TR001082 · NCATS · UNIVERSITY OF COLORADO DENVER · PI SOKOL, RONALD J. · 2013 to 2017
$48.0M
Redefining the Major Peanut AllergensR01AI052164 · NIAID · UNIVERSITY OF COLORADO DENVER · PI DRESKIN, STEPHEN C · 2003 to 2011
$3.0M
NCATS NIH HHS UL1 TR001082NIAID NIH HHS R01 AI052164NIAID NIH HHS R01-AI052164
6 · The paper itself

Abstract

backgroundThe moderately homologous (approx. 60%) proteins Ara h 2 and Ara h 6 are the most potent peanut allergens. This study was designed to define the relative individual contributions of Ara h 2 and Ara h 6 to the overall allergenic activity of a crude peanut extract (CPE).

methodsAra h 2 and Ara h 6 were removed from CPE by gel filtration chromatography. Ara h 2.01, Ara h 2.02 and Ara h 6 were further purified (>99%). The potency of each allergen and the ability of these allergens to reconstitute the allergenic activity of CPE depleted of Ara h 2 and Ara h 6 was measured with RBL SX-38 cells sensitized with IgE from sensitized peanut allergic patients.

resultsThe potency of the native proteins were significantly different (p < 0.0001) although not dramatically so, with a rank order of Ara h 2.01 > Ara h 2.02 > Ara h 6. The addition of either purified Ara h 2 or Ara h 6 independently at their original concentration to CPE depleted of both Ara h 2 and Ara h 6 restored 80-100% of the original CPE allergenic activity. Addition of both Ara h 2 and Ara h 6 consistently completely restored the allergenic activity of CPE.

conclusionsThese studies indicate that either Ara h 2 or Ara h 6 independently can account for most of the allergenic activity in a CPE and demonstrate important redundancy in the allergenic activity of these related molecules.

Indexed as

2S Albumins, PlantAllergensAnimalsAntigens, PlantArachisBasophilsCell Line, TumorElectrophoresis, Polyacrylamide GelGlycoproteinsHumansImmunoglobulin EPeanut HypersensitivityPlant ExtractsProtein BindingRats2S Albumins, PlantAllergensAntigens, PlantAra h 2 allergen, Arachis hypogaeaAra h 6 allergen, Arachis hypogaeaGlycoproteinsImmunoglobulin EPlant Extracts

Identifiers

PMID23075924
PMCPMC3652334

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Registered trials

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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.