Cited by 1,889Air Quality and Health ImpactsAsthma and respiratory diseasesIndoor Air Quality and Microbial Exposure

Outdoor air pollution and asthma.

Open access
Guarnieri, Michael, Balmes, John R·2014·The Lancet

Abstract

Traffic and power generation are the main sources of urban air pollution. The idea that outdoor air pollution can cause exacerbations of pre-existing asthma is supported by an evidence base that has been accumulating for several decades, with several studies suggesting a contribution to new-onset asthma as well. In this Series paper, we discuss the effects of particulate matter (PM), gaseous pollutants (ozone, nitrogen dioxide, and sulphur dioxide), and mixed traffic-related air pollution. We focus on clinical studies, both epidemiological and experimental, published in the previous 5 years. From a mechanistic perspective, air pollutants probably cause oxidative injury to the airways, leading to inflammation, remodelling, and increased risk of sensitisation. Although several pollutants have been linked to new-onset asthma, the strength of the evidence is variable. We also discuss clinical implications, policy issues, and research gaps relevant to air pollution and asthma.

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Crossref · 10.1016/s0140-6736(14)60617-6

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  • PAHs, major components of PM2.5, easily penetrate the skin in animal models because of their lipophilic nature.

    “Furthermore, it has been reported that polycyclic aromatic hydrocarbons (PAHs), major components of PM2.5, easily penetrate the skin in animal models because of their lipophilic nature (1, 8–10).”

    From Particulate matter causes skin barrier dysfunction. (2021) · cites this paper as [1]

    The Particulate matter section identifies PAHs as constituents of particulate matter, but does not call them major components of PM2.5. The paper does not report that PAHs penetrate animal skin or attribute such penetration to their lipophilic nature; its animal-model discussion in the Mechanisms section concerns airway inflammation instead. (LLM, conf=0.88)

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Research works printed but not linked: 1

  1. [10]Health Effects Institute Panel on the Health Effects of Traffic-Related Air Pollution Traffic-related air pollution: a critical review of the literature on emissions, exposure, and health effects Boston, MA Health Effects Institute 2010

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Authors
Guarnieri, M., & Balmes, J. R.
Affiliations
University of California, San Francisco (US)
Venue
The Lancet
Publisher
Elsevier BV
Published
2014-05
Volume
383
Issue
9928
Pages
1581-1592
ISSN
  • 0099-5355 (ISSN-L)
  • 0140-6736
OpenAlex
W2083753594
Cited by
1,889
References
137
Citations by year
2026: 104 · 2025: 185 · 2024: 197 · 2023: 210 · 2022: 219 · 2021: 233 · 2020: 222 · 2019: 171 · 2018: 137 · 2017: 78 · 2016: 74 · 2015: 45 · 2014: 10 · 2013: 3
FWCI
7.14
Type
journal article
Language
en
Open access
Locations
  • The Lancet (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
National Heart, Lung, and Blood Institute (T32HL007185)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
Keywords
outdoor air pollution, asthma, particulate matter, ozone, nitrogen dioxide, sulfur dioxide, traffic-related air pollution, new-onset asthma, asthma exacerbations, airway inflammation, airway remodeling, air quality policy
MeSH terms
Air Pollutants, Air Pollution, Asthma, Vehicle Emissions, Environmental Exposure, Gases, Health Policy, Humans, Risk Factors, Particulate Matter

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