Cited by 80Air Quality and Health ImpactsIndoor Air Quality and Microbial ExposureAtmospheric chemistry and aerosols

Particulate matter and the airway epithelium: the special case of the underground?

Open access
Cooper, Dawn M., Loxham, Matthew·2019·European Respiratory Review

Abstract

Airborne particulate matter (PM) is a leading driver of premature mortality and cardiopulmonary morbidity, associated with exacerbations of asthma and chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, and lung cancer. The airway epithelium, as the principal site of PM deposition, is critical to the effects of, and initial response to, PM. A key mechanism by which PM exerts its effects is the generation of reactive oxygen species (ROS), inducing antioxidant and inflammatory responses in exposed epithelial cells. However, much of what is known about the effects of PM is based on research using particulates from urban air. PM from underground railways is compositionally highly distinct from urban PM, being rich in metals associated with wheel, rail and brake wear and electrical arcing and component wear, which endows underground PM with potent ROS-generating capacity. In addition, underground PM appears to be more inflammogenic than urban PM in epithelial cells, but there is a lack of research into effects on exposed individuals, especially those with underlying health conditions. This review summarises current knowledge about the effects of PM on the airway epithelium, how the effects of underground PM may be different to urban PM and the potential health consequences and mitigation strategies for commuters and workers in underground railways.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1183/16000617.0066-2019

Cites

110 of 110 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The outdoor concentrations of PM2.5 in cities such as Seoul, Korea, and Beijing, China, reach up to 200 μg/m3 and 800 μg/m3, respectively.

    “The outdoor concentrations of PM2.5 in cities such as Seoul, Korea, and Beijing, China, reach up to 200 μg/m3 (about 0.2 ng/mL) and 800 μg/m3 (about 0.8 ng/mL), respectively (https://aqicn.org) (2, 25, 70, 75).”

    From Particulate matter causes skin barrier dysfunction. (2021) · cites this paper as [2]

    Table 1 (Underground railways; page unavailable) lists ambient PM2.5 concentrations for several cities, but not Seoul or Beijing. Searches for those cities and the claimed 200 and 800 µg/m³ values found no passage in our copy reporting those peaks. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

2 of the 112 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. [18]Cusack M, Talbot N, Ondráček J, et al. Variability of aerosols and chemical composition of PM10, PM2.5 and PM1 on a platform of the Prague underground metro. Atmos Environ 2015; 118: 176– 183.
  2. [45]Moreno T, Kelly FJ, Dunster C, et al. Oxidative potential of subway PM2.5. Atmos Environ 2017; 148: 230– 238.

Cited by

Sorted by citations

Authors
Cooper, D. M., & Loxham, M.
Affiliations
  • University of Southampton (GB)
  • University Hospital Southampton NHS Foundation Trust (GB)
Corresponding author
Loxham, Matthew
Venue
European Respiratory Review
Published
2019-09-25
Volume
28
Issue
153
Pages
190066
ISSN
  • 0905-9180 (ISSN-L)
  • 1600-0617
OpenAlex
W2976626953
Cited by
80
References
112
Citations by year
2026: 12 · 2025: 7 · 2024: 9 · 2023: 10 · 2022: 18 · 2021: 15 · 2020: 9
FWCI
4.53
Type
journal article
Language
en
Open access
Locations
  • European Respiratory Review (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute for Health and Care Research (NIHR-INF-0016)
  • Academy of Medical Sciences (SBF003\1063)
  • Biotechnology and Biological Sciences Research Council (BB/P011365/1)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
Keywords
particulate matter, airway epithelium, reactive oxygen species, oxidative stress, inflammation, urban particulate matter, asthma exacerbations, chronic obstructive pulmonary disease, lung cancer
MeSH terms
Air Pollutants, Air Pollutants, Occupational, Air Pollution, Humans, Railroads, Risk Factors, Occupational Health, Occupational Exposure, Reactive Oxygen Species, Oxidative Stress, Risk Assessment, Inflammation Mediators, Inhalation Exposure, Respiratory Mucosa, Particulate Matter

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review