Evidence map›Paper›PMID 24636086›Full record

ArticleThe Journal of allergy and clinical immunology2014

Alternaria-derived serine protease activity drives IL-33-mediated asthma exacerbations.

Robert J Snelgrove, Lisa G Gregory, Teresa Peiró, Samia Akthar, Gaynor A Campbell, Simone A Walker, Clare M Lloyd

Open access · hybridAbstract read
In one paragraph

Article in The Journal of allergy and clinical immunology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 161 papers.

0numbers the graph read from it
0cells of the map it votes in
161citing papers in PubMed
10.4field-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

161 citing papers in PubMed, 248 citations in OpenAlex.

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  18. Targeting alarmins in asthma: From bench to clinic.The Journal of allergy and clinical immunology · 2025
    Review
  19. Characterisation ofJournal of fungi (Basel, Switzerland) · 2025
    Article
  20. Review

101 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

7 authors at 1 institution in 1 country.

Robert J SnelgroveLeukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Lisa G GregoryLeukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Teresa PeiróLeukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Samia AktharLeukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Gaynor A CampbellLeukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Simone A WalkerLeukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Clare M LloydLeukocyte Biology Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom. Electronic address: c.lloyd@imperial.ac.uk.
Imperial College London · GB

Funding

Medical Research Council G1000758Wellcome Trust 086718/Z/08/ZWellcome Trust 087618Wellcome Trust 095707/Z/11/Z
6 · The paper itself

Abstract

backgroundThe fungal allergen Alternaria alternata is implicated in severe asthma and rapid onset life-threatening exacerbations of disease. However, the mechanisms that underlie this severe pathogenicity remain unclear.

objectiveWe sought to investigate the mechanism whereby Alternaria was capable of initiating severe, rapid onset allergic inflammation.

methodsIL-33 levels were quantified in wild-type and ST2(-/-) mice that lacked the IL-33 receptor given inhaled house dust mite, cat dander, or Alternaria, and the effect of inhibiting allergen-specific protease activities on IL-33 levels was assessed. An exacerbation model of allergic airway disease was established whereby mice were sensitized with house dust mite before subsequently being challenged with Alternaria (with or without serine protease activity), and inflammation, remodeling, and lung function assessed 24 hours later.

resultsAlternaria, but not other common aeroallergens, possessed intrinsic serine protease activity that elicited the rapid release of IL-33 into the airways of mice through a mechanism that was dependent upon the activation of protease activated receptor-2 and adenosine triphosphate signaling. The unique capacity of Alternaria to drive this early IL-33 release resulted in a greater pulmonary inflammation by 24 hours after challenge relative to the common aeroallergen house dust mite. Furthermore, this Alternaria serine protease-IL-33 axis triggered a rapid, augmented inflammation, mucus release, and loss of lung function in our exacerbation model.

conclusionAlternaria-specific serine protease activity causes rapid IL-33 release, which underlies the development of a robust TH2 inflammation and exacerbation of allergic airway disease.

Indexed as

Adenosine TriphosphateAlternariaAlternariosisAnimalsAntigens, DermatophagoidesDisease Models, AnimalDisease ProgressionFemaleFungal ProteinsHumansHypersensitivityInterleukin-1 Receptor-Like 1 ProteinInterleukin-33InterleukinsMiceMice, Inbred BALB CAdenosine TriphosphateAntigens, DermatophagoidesFungal ProteinsIl1rl1 protein, mouseIl33 protein, mouseInterleukin-1 Receptor-Like 1 ProteinInterleukin-33InterleukinsReceptor, PAR-2Receptors, InterleukinSerine Proteasesallergic airway diseaseAlternaria alternataasthma exacerbationIL-33protease

Identifiers

PMID24636086
PMCPMC4152000
OpenAlexW2037749979

What OpenQuestion holds

Textmetadata
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.