Evidence map›Paper›PMID 12324677›Full record

Trial reportThorax2002

Dose-dependent onset and cessation of action of inhaled budesonide on exhaled nitric oxide and symptoms in mild asthma.

S A Kharitonov, L E Donnelly, P Montuschi, M Corradi, J V Collins, P J Barnes

Open access · bronzeAbstract readClinical TrialRandomized Controlled Trial
In one paragraph

Trial report in Thorax, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 4 pooled it
6.7field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 4 syntheses or guidelines pooled it, 240 citations in OpenAlex.

  1. Pooled it
  2. Exhaled nitric oxide levels to guide treatment for children with asthma.The Cochrane database of systematic reviews · 2016
    Pooled it
  3. Pooled it
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  7. Trial
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Association of fractional exhaled nitric oxide with asthma morbidity in urban minority children.The Journal of asthma : official journal of the Association for the Care of Asthma · 2023
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  14. Review
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  19. Article
  20. Exhaled nitric oxide levels to guide treatment for adults with asthma.The Cochrane database of systematic reviews · 2016
    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

6 authors at 1 institution in 1 country.

S A KharitonovDepartment of Thoracic Medicine, National Heart and Lung Institute, Imperial College School of Medicine, Royal Brompton & Harefield NHS Trust, London SW3 6LY, UK.
L E Donnelly
P Montuschi
M Corradi
J V Collins
P J Barnes
Royal Brompton & Harefield NHS Foundation Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDose dependent anti-inflammatory effects of inhaled corticosteroids in asthma are difficult to demonstrate in clinical practice. The anti-inflammatory effect of low dose inhaled budesonide on non-invasive exhaled markers of inflammation and oxidative stress were assessed in patients with mild asthma.

methods28 patients entered a double blind, placebo controlled, parallel group study and were randomly given either 100 or 400 micro g budesonide or placebo once daily, inhaled from a dry powder inhaler (Turbohaler), for 3 weeks followed by 1 week without treatment. Exhaled nitric oxide (NO), exhaled carbon monoxide (CO), nitrite/nitrate, S-nitrosothiols, and 8-isoprostanes in exhaled breath condensate were measured four times during weeks 1 and 4, and once a week during weeks 2 and 3.

resultsA dose-dependent speed of onset and cessation of action of budesonide was seen on exhaled NO and asthma symptoms. Treatment with 400 micro g/day reduced exhaled NO faster (-2.06 (0.37) ppb/day) than 100 micro g/day (-0.51 (0.35) ppb/day; p<0.01). The mean difference between the effect of 100 and 400 micro g budesonide was -1.55 ppb/day (95% CI -2.50 to -0.60). Pretreatment NO levels were positively related to the subsequent speed of reduction during the first 3-5 days of treatment. Faster recovery of exhaled NO was seen after stopping treatment with budesonide 400 micro g/day (1.89 (1.43) ppb/day) than 100 micro g/day (0.49 (0.34) ppb/day, p<0.01). The mean difference between the effect of 100 and 400 micro g budesonide was 1.40 ppb/day (95% CI -0.49 to 2.31). Symptom improvement was dose-dependent, although symptoms returned faster in patients treated with 400 micro g/day. A significant reduction in exhaled nitrite/nitrate and S-nitrosothiols after budesonide treatment was not dose-dependent. There were no significant changes in exhaled CO or 8-isoprostanes in breath condensate.

conclusionMeasurement of exhaled NO levels can indicate a dose-dependent onset and cessation of anti-inflammatory action of inhaled corticosteroids in patients with mild asthma.

Indexed as

Administration, InhalationAdultAnti-Inflammatory AgentsAsthmaBreath TestsBronchodilator AgentsBudesonideCarbon MonoxideDose-Response Relationship, DrugDouble-Blind MethodFemaleForced Expiratory VolumeHumansIsoprostanesMaleNebulizers and VaporizersAnti-Inflammatory AgentsBronchodilator AgentsBudesonideCarbon MonoxideIsoprostanesNitratesNitric OxideS-Nitrosothiols

Identifiers

PMID12324677
PMCPMC1746196
OpenAlexW2151520766

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.