Evidence map›Paper›PMID 20727160›Full record

Trial reportParticle and fibre toxicology2010

Antioxidant airway responses following experimental exposure to wood smoke in man.

Maria Sehlstedt, Rosamund Dove, Christoffer Boman, Joakim Pagels, Erik Swietlicki, Jakob Löndahl, Roger Westerholm, Jenny Bosson, Stefan Barath, Annelie F Behndig and 4 more

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Particle and fibre toxicology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
4.5field-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

31 citing papers in PubMed, 105 citations in OpenAlex.

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  18. Characterization andToxicological and environmental chemistry · 2018
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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

14 authors at 4 institutions in 2 countries.

Maria SehlstedtDepartment of Public Health and Clinical Medicine, Division of Medicine, Umeå University, Umeå, Sweden.
Rosamund Dove
Christoffer Boman
Joakim Pagels
Erik Swietlicki
Jakob Löndahl
Roger Westerholm
Jenny Bosson
Stefan Barath
Annelie F Behndig
Jamshid Pourazar
Thomas Sandström
Ian S Mudway
Anders Blomberg
Umeå University · SELund University · SEKing's College London · GBStockholm University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBiomass combustion contributes to the production of ambient particulate matter (PM) in rural environments as well as urban settings, but relatively little is known about the health effects of these emissions. The aim of this study was therefore to characterize airway responses in humans exposed to wood smoke PM under controlled conditions. Nineteen healthy volunteers were exposed to both wood smoke, at a particulate matter (PM2.5) concentration of 224 ± 22 μg/m3, and filtered air for three hours with intermittent exercise. The wood smoke was generated employing an experimental set-up with an adjustable wood pellet boiler system under incomplete combustion. Symptoms, lung function, and exhaled NO were measured over exposures, with bronchoscopy performed 24 h post-exposure for characterisation of airway inflammatory and antioxidant responses in airway lavages.

resultsGlutathione (GSH) concentrations were enhanced in bronchoalveolar lavage (BAL) after wood smoke exposure vs. air (p = 0.025), together with an increase in upper airway symptoms. Neither lung function, exhaled NO nor systemic nor airway inflammatory parameters in BAL and bronchial mucosal biopsies were significantly affected.

conclusionsExposure of healthy subjects to wood smoke, derived from an experimental wood pellet boiler operating under incomplete combustion conditions with PM emissions dominated by organic matter, caused an increase in mucosal symptoms and GSH in the alveolar respiratory tract lining fluids but no acute airway inflammatory responses. We contend that this response reflects a mobilisation of GSH to the air-lung interface, consistent with a protective adaptation to the investigated wood smoke exposure.

Indexed as

WoodAdultAntioxidantsDouble-Blind MethodFemaleGlutathioneHumansLungMaleParticulate MatterSmokeAntioxidantsGlutathioneParticulate MatterSmoke

Identifiers

PMID20727160
PMCPMC2936868
OpenAlexW2122557016

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.