Evidence map›Paper›PMID 20805170›Full record

ArticleThorax2010

Quantitative analysis of high-resolution computed tomography scans in severe asthma subphenotypes.

Sumit Gupta, Salman Siddiqui, Pranab Haldar, James J Entwisle, Dean Mawby, Andrew J Wardlaw, Peter Bradding, Ian D Pavord, Ruth H Green, Christopher E Brightling

Open access · hybridAbstract read
In one paragraph

Article in Thorax, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

42 citing papers in PubMed, 107 citations in OpenAlex.

  1. Reproducibility of airway luminal size in asthma measured by HRCT.Journal of applied physiology (Bethesda, Md. : 1985) · 2017
    Trial
  2. Trial
  3. Childhood asthma clusters and response to therapy in clinical trials.The Journal of allergy and clinical immunology · 2014
    Trial
  4. Vascular remodeling in asthma: from mechanisms to precision medicine.Current opinion in allergy and clinical immunology · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Journal of fungi (Basel, Switzerland) · 2022
    Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Is bronchiectasis really a disease?European respiratory review : an official journal of the European Respiratory Society · 2020
    Article
  16. Article
  17. Dismantling the pathophysiology of asthma using imaging.European respiratory review : an official journal of the European Respiratory Society · 2019
    Review
  18. Article
  19. Observational
  20. Article
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

10 authors at 2 institutions in 1 country.

Sumit GuptaInstitute for Lung Health, Department of Infection, Inflammation and Immunity, University of Leicester, Leicester LE3 9QP, UK.
Salman Siddiqui
Pranab Haldar
James J Entwisle
Dean Mawby
Andrew J Wardlaw
Peter Bradding
Ian D Pavord
Ruth H Green
Christopher E Brightling
University of Leicester · GBGlenfield Hospital · GB

Funding

Wellcome Trust 082265
6 · The paper itself

Abstract

backgroundSevere asthma is a heterogeneous condition. Airway remodelling is a feature of severe asthma and can be determined by the assessment of high-resolution computed tomography (HRCT) scans. The aim of this study was to assess whether airway remodelling is restricted to specific subphenotypes of severe asthma.

methodsA retrospective analysis was performed of HRCT scans from subjects who had attended a single-centre severe asthma clinic between 2003 and 2008. The right upper lobe apical segmental bronchus (RB1) dimensions were measured and the clinical and sputum inflammatory characteristics associated with RB1 geometry were assessed by univariate and multivariate regression analyses. Longitudinal sputum data were available and were described as area under the time curve (AUC). Comparisons were made in RB1 geometry across subjects in four subphenotypes determined by cluster analysis, smokers and non-smokers, and subjects with and without persistent airflow obstruction.

resultsNinety-nine subjects with severe asthma and 16 healthy controls were recruited. In the subjects with severe asthma the RB1 percentage wall area (%WA) was increased (p=0.009) and lumen area (LA)/body surface area (BSA) was decreased (p=0.008) compared with controls but was not different across the four subphenotypes. Airway geometry was not different between smokers and non-smokers and RB1 %WA was increased in those with persistent airflow obstruction. RB1 %WA in severe asthma was best associated with airflow limitation and persistent neutrophilic airway inflammation (model R(2)=0.27, p=0.001).

conclusionsAirway remodelling of proximal airways occurs in severe asthma and is associated with impaired lung function and neutrophilic airway inflammation.

Indexed as

AdultAirway RemodelingAsthmaBronchiBronchographyEpidemiologic MethodsFemaleForced Expiratory VolumeHumansImage Processing, Computer-AssistedMaleMiddle AgedNeutrophil InfiltrationPhenotypeTomography, X-Ray Computed

Identifiers

PMID20805170
PMCPMC2975950
OpenAlexW2127946499

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.