Evidence map›Paper›PMID 23717615›Full record

ArticlePloS one2013

Mitochondrial genetic background modifies the relationship between traffic-related air pollution exposure and systemic biomarkers of inflammation.

Sharine Wittkopp, Norbert Staimer, Thomas Tjoa, Daniel Gillen, Nancy Daher, Martin Shafer, James J Schauer, Constantinos Sioutas, Ralph J Delfino

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. Pooled it
  2. PMAntioxidants (Basel, Switzerland) · 2026
    Article
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  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Cardiovascular adaptations to particle inhalation exposure: molecular mechanisms of the toxicology.American journal of physiology. Heart and circulatory physiology · 2020
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Mitochondrial Function in Allergic Disease.Current allergy and asthma reports · 2017
    Review
  18. Article
  19. MicroRNA-1228(*) inhibit apoptosis in A549 cells exposed to fine particulate matter.Environmental science and pollution research international · 2016
    Article
  20. Review
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

9 authors at 3 institutions in 1 country.

Sharine WittkoppOccupational and Environmental Medicine Division, Department of Medicine, School of Medicine, University of California Irvine, Irvine, California, United States of America.
Norbert Staimer
Thomas Tjoa
Daniel Gillen
Nancy Daher
Martin Shafer
James J Schauer
Constantinos Sioutas
Ralph J Delfino
University of California, Irvine · USUniversity of Southern California · USUniversity of Wisconsin–Madison · US

Funding

ZOVIRAX CREAM TO TREAT HERPES LABIALIS IN ADOLESCENTSM01RR000827 · NCRR · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ZELL, JASON · 1985 to 2010
$74.3M
Ultrafine Particulate Matter &Cardiorespiratory HealthR01ES012243 · NIEHS · UNIVERSITY OF CALIFORNIA-IRVINE · PI DELFINO, RALPH J · 2003 to 2015
$6.0M
Air Pollution and Peripheral Blood Gene Expression in Subjects with Coronary ArteR21ES016420 · NIEHS · UNIVERSITY OF CALIFORNIA-IRVINE · PI DELFINO, RALPH J · 2009 to 2010
$412k
Gene expression responses to air pollution and modification by genetic variationF30ES021107 · NIEHS · UNIVERSITY OF CALIFORNIA-IRVINE · PI WITTKOPP, SHARINE · 2012 to 2015
$169k
NCRR NIH HHS M01 RR000827NCRR NIH HHS MO1 RR00827NIEHS NIH HHS F30 ES021107NIEHS NIH HHS F30 ES021107-01A1NIEHS NIH HHS R01 ES012243NIEHS NIH HHS R01 ES12243NIEHS NIH HHS R21 ES016420PHS HHS 03-329PHS HHS 09-341
6 · The paper itself

Abstract

backgroundMitochondria are the main source of reactive oxygen species (ROS). Human mitochondrial haplogroups are linked to differences in ROS production and oxidative-stress induced inflammation that may influence disease pathogenesis, including coronary artery disease (CAD). We previously showed that traffic-related air pollutants were associated with biomarkers of systemic inflammation in a cohort panel of subjects with CAD in the Los Angeles air basin.

objectiveWe tested whether air pollutant exposure-associated inflammation was stronger in mitochondrial haplogroup H than U (high versus low ROS production) in this panel (38 subjects and 417 observations).

methodsInflammation biomarkers were measured weekly in each subject (≤ 12 weeks), including interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), C-reactive protein, interleukin-6 soluble receptor and tumor necrosis factor-soluble receptor II. We determined haplogroup by restriction fragment length polymorphism analysis. Air pollutants included nitrogen oxides (NOx), carbon monoxide (CO), organic carbon, elemental and black carbon (EC, BC); and particulate matter mass, three size fractions (<0.25 µm, 0.25-2.5 µm, and 2.5-10 µm in aerodynamic diameter). Particulate matter extracts were analyzed for organic compounds, including polycyclic aromatic hydrocarbons (PAH), and in vitro oxidative potential of aqueous extracts. Associations between exposures and biomarkers, stratified by haplogroup, were analyzed by mixed-effects models.

resultsIL-6 and TNF-α were associated with traffic-related air pollutants (BC, CO, NOx and PAH), and with mass and oxidative potential of quasi-ultrafine particles <0.25 µm. These associations were stronger for haplogroup H than haplogroup U.

conclusionsResults suggest that mitochondrial haplogroup U is a novel protective factor for air pollution-related systemic inflammation in this small group of subjects.

Indexed as

AgedAged, 80 and overAir PollutantsAir PollutionAnimalsBiomarkersCells, CulturedCohort StudiesC-Reactive ProteinFemaleHaplotypesHumansInflammation MediatorsInterleukin-6Macrophages, AlveolarMaleAir PollutantsBiomarkersC-Reactive ProteinIL6 protein, humanIL6R protein, humanInflammation MediatorsInterleukin-6Particulate MatterPolycyclic Aromatic HydrocarbonsReceptors, Interleukin-6Receptors, Tumor Necrosis Factor, Type IITumor Necrosis Factor-alphaVehicle Emissions

Identifiers

PMID23717615
PMCPMC3662686
OpenAlexW2020938916

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.