Evidence map›Paper›PMID 17105777›Full record

Trial reportThorax2007

Effects of inhaled fluticasone on angiogenesis and vascular endothelial growth factor in asthma.

B N Feltis, D Wignarajah, D W Reid, C Ward, R Harding, E H Walters

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Thorax, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.0field-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

23 citing papers in PubMed, 77 citations in OpenAlex.

  1. Inhaled corticosteroid normalizes some but not all airway vascular remodeling in COPD.International journal of chronic obstructive pulmonary disease · 2016
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  10. Observational
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  13. Review
  14. The effects of inhaled corticosteroids on growth in children.The open respiratory medicine journal · 2014
    Article
  15. Review
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  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

B N FeltisTasmanian School of Medicine, 43 Collins St, Hobart, Tasmania, Australia 7001. bryce.feltis@csiro.au
D Wignarajah
D W Reid
C Ward
R Harding
E H Walters
University of Tasmania · AUMonash University · AUNewcastle University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSubepithelial hypervascularity and angiogenesis in the airways are part of structural remodelling of the airway wall in asthma, but the effects of inhaled corticosteroids (ICS) on these have not been explored. Increased vascularity in asthma may contribute to a number of functional abnormalities. A study was undertaken to explore angiogenic modulation by ICS and its likely regulation via vascular endothelial growth factor (VEGF), its receptors and the angiopoietins.

methodsA placebo-controlled intervention study with ICS in asthma was performed, examining vascularity, VEGF, its receptors (VEGFR1 and VEGFR2), and angiopoietin-1 (Ang1) to assess which of these factors were changed in the asthmatic airways after ICS treatment. Airway wall biopsy specimens, lavage fluid and cells were obtained from 35 patients with mild asthma randomised to receive ICS or placebo for 3 months, after which bronchoscopic examination and sample collection were repeated. Immunohistochemistry and image analysis were used to obtain quantitative measures of vessels, angiogenic sprouts, VEGF, VEGFR1, VEGFR2 and Ang1 staining in airway biopsy specimens. ELISA was used to assess VEGF concentrations in the lavage fluid.

resultsVessel, VEGF and sprout staining were decreased after 3 months of ICS treatment. VEGF levels remained unchanged. VEGF receptors and Ang1 staining were not reduced after treatment.

conclusionsThe findings of this study support an effect of ICS in downregulating angiogenic remodelling in the airways in asthma, associated with decreasing VEGF activity within the airway wall. The environment of the airways after treatment with ICS, with changes in the balance between VEGF, its receptors, Ang1 and sprouts, appears to be less angiogenic than in untreated asthma.

Indexed as

Administration, InhalationAdultAgedAndrostadienesAnti-Asthmatic AgentsAsthmaBronchiFluticasoneHumansMetered Dose InhalersMiddle AgedNeovascularization, PathologicVascular Endothelial Growth Factor AAndrostadienesAnti-Asthmatic AgentsFluticasoneVascular Endothelial Growth Factor A

Identifiers

PMID17105777
PMCPMC2092477
OpenAlexW2139001724

What OpenQuestion holds

Textmetadata
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.