Evidence map›Paper›PMID 20562226›Full record

ArticleAmerican journal of physiology. Lung cellular and molecular physiology2010

Ambient ultrafine particles provide a strong adjuvant effect in the secondary immune response: implication for traffic-related asthma flares.

Ning Li, Jack R Harkema, Ryan P Lewandowski, Meiying Wang, Lori A Bramble, Glenn R Gookin, Zhi Ning, Michael T Kleinman, Constantinos Sioutas, Andre E Nel

Abstract read
In one paragraph

Article in American journal of physiology. Lung cellular and molecular physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
6.2field-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, 97 citations in OpenAlex.

  1. Review
  2. Climate Change and the Future of Allergies and Asthma.Current allergy and asthma reports · 2025
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  5. Preventive nutrition and food science · 2022
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  6. Article
  7. Article
  8. Review
  9. Inflammatory effects of particulate matter air pollution.Environmental science and pollution research international · 2020
    Review
  10. Observational
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Fine particulate matter (PMJournal of toxicology and environmental health. Part A · 2017
    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

10 authors at 5 institutions in 1 country.

Ning LiDivision of NanoMedicine, Department of Medicine, University of California, Los Angeles, California 90095, USA.
Jack R Harkema
Ryan P Lewandowski
Meiying Wang
Lori A Bramble
Glenn R Gookin
Zhi Ning
Michael T Kleinman
Constantinos Sioutas
Andre E Nel
Michigan State University · USSouthern California Reproductive Center · USUniversity of California, Irvine · USUniversity of California, Los Angeles · USUniversity of Southern California · US

Funding

Xenobiotics, Oxidative Stress and Allergic InflammationU19AI070453 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LOO, JOSEPH A · 2006 to 2010
$6.7M
Predictive Toxicological Paradigm for Chronic Nanoparticle Injury in the LungR01ES016746 · NIEHS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NEL, ANDRE ELIAS · 2008 to 2017
$3.4M
Predictive Toxicological Paradigms to Establish Inhalation Toxicology ModelsRC2ES018766 · NIEHS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI NEL, ANDRE ELIAS · 2009 to 2010
$1.1M
NIAID NIH HHS U19 AI-070453NIAID NIH HHS U19 AI070453NIEHS NIH HHS R01 ES016746NIEHS NIH HHS R01-ES-016746NIEHS NIH HHS RC2 ES-018766NIEHS NIH HHS RC2 ES018766
6 · The paper itself

Abstract

We have previously demonstrated that intranasal administration of ambient ultrafine particles (UFP) acts as an adjuvant for primary allergic sensitization to ovalbumin (OVA) in Balb/c mice. It is important to find out whether inhaled UFP exert the same effect on the secondary immune response as a way of explaining asthma flares in already-sensitized individuals due to traffic exposure near a freeway. The objective of this study is to determine whether inhalation exposure to ambient UFP near an urban freeway could enhance the secondary immune response to OVA in already-sensitized mice. Prior OVA-sensitized animals were exposed to concentrated ambient UFP at the time of secondary OVA challenge in our mobile animal laboratory in Los Angeles. OVA-specific antibody production, airway morphometry, allergic airway inflammation, cytokine gene expression, and oxidative stress marker were assessed. As few as five ambient UFP exposures were sufficient to promote the OVA recall immune response, including generating allergic airway inflammation in smaller and more distal airways compared with the adjuvant effect of intranasally instilled UFP on the primary immune response. The secondary immune response was characterized by the T helper 2 and IL-17 cytokine gene expression in the lung. In summary, our results demonstrated that inhalation of prooxidative ambient UFP could effectively boost the secondary immune response to an experimental allergen, indicating that vehicular traffic exposure could exacerbate allergic inflammation in already-sensitized subjects.

Indexed as

Vehicle EmissionsAdjuvants, ImmunologicAdministration, InhalationAnimalsAntibody FormationAsthmaCytokinesFemaleGene ExpressionHypersensitivityInflammationLungMiceMice, Inbred BALB COvalbuminParticulate MatterAdjuvants, ImmunologicCytokinesOvalbuminParticulate MatterVehicle Emissions

Identifiers

PMID20562226
PMCPMC2951067
OpenAlexW2151597153

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.