Evidence map›Paper›PMID 22839109›Full record

Trial reportParticle and fibre toxicology2012

Experimental determination of the respiratory tract deposition of diesel combustion particles in patients with chronic obstructive pulmonary disease.

Jakob Löndahl, Erik Swietlicki, Jenny Rissler, Agneta Bengtsson, Christoffer Boman, Anders Blomberg, Thomas Sandström

Abstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Particle and fibre toxicology, 2012. 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
–field-weighted citation impact
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.

  1. Trial
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  6. Review
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  11. Article
  12. The health effects of ultrafine particles.Experimental & molecular medicine · 2020
    Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Pedestrians in Traffic Environments: Ultrafine Particle Respiratory Doses.International journal of environmental research and public health · 2017
    Article
  19. Review
  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

7 authors.

Jakob LöndahlDepartment of Physics, Division of Nuclear Physics, Lund University, Lund, Sweden. jakob.londahl@design.lth.se
Erik Swietlicki
Jenny Rissler
Agneta Bengtsson
Christoffer Boman
Anders Blomberg
Thomas Sandström

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAir pollution, mainly from combustion, is one of the leading global health risk factors. A susceptible group is the more than 200 million people worldwide suffering from chronic obstructive pulmonary disease (COPD). There are few data on lung deposition of airborne particles in patients with COPD and none for combustion particles.

objectivesTo determine respiratory tract deposition of diesel combustion particles in patients with COPD during spontaneous breathing.

methodsTen COPD patients and seven healthy subjects inhaled diesel exhaust particles generated during idling and transient driving in an exposure chamber. The respiratory tract deposition of the particles was measured in the size range 10-500 nm during spontaneous breathing.

resultsThe deposited dose rate increased with increasing severity of the disease. However, the deposition probability of the ultrafine combustion particles (< 100 nm) was decreased in COPD patients. The deposition probability was associated with both breathing parameters and lung function, but could be predicted only based on lung function.

conclusionsThe higher deposited dose rate of inhaled air pollution particles in COPD patients may be one of the factors contributing to their increased vulnerability. The strong correlations between lung function and particle deposition, especially in the size range of 20-30 nm, suggest that altered particle deposition could be used as an indicator respiratory disease.

Indexed as

Vehicle EmissionsAerosolsAgedAtmosphere Exposure ChambersFemaleHumansLungMaleMiddle AgedParticle SizeParticulate MatterPulmonary Disease, Chronic ObstructivePulmonary VentilationRespiratory MucosaSeverity of Illness IndexTissue DistributionAerosolsParticulate MatterVehicle Emissions

Identifiers

PMID22839109
PMCPMC3464711

What OpenQuestion holds

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Registered trials

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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.