Evidence map›Paper›PMID 27012244›Full record

ArticleEnvironmental health : a global access science source2016

Ambient PM2.5 and risk of emergency room visits for myocardial infarction: impact of regional PM2.5 oxidative potential: a case-crossover study.

Scott Weichenthal, Eric Lavigne, Greg Evans, Krystal Pollitt, Rick T Burnett

Open access · goldAbstract read
In one paragraph

Article in Environmental health : a global access science source, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 2 pooled it
10.4field-weighted citation impact, top 1% 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

56 citing papers in PubMed, 2 syntheses or guidelines pooled it, 172 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Metabolomic evaluation of air pollution-related bone damage and potential mediation in Women's Health Initiative participants.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Article
  8. Article
  9. Review
  10. COPD Exacerbations, Air Pollutant Fluctuations, and Individual-Level Factors in the Pandemic Era.International journal of chronic obstructive pulmonary disease · 2025
    Article
  11. Air pollution mixture complexity and its effect on PMEnvironmental epidemiology (Philadelphia, Pa.) · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Personal exposure to PMJournal of exposure science & environmental epidemiology · 2023
    Article
  19. Article
  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

5 authors at 4 institutions in 2 countries.

Scott WeichenthalHealth Canada, 269 Laurier Ave West, Ottawa, K1A 0K9, Ontario, Canada. scott.weichenthal@hc-sc.gc.ca.
Eric LavigneHealth Canada, 269 Laurier Ave West, Ottawa, K1A 0K9, Ontario, Canada.
Greg EvansUniversity of Toronto, 200 College St, Toronto, M5S 3E5, Ontario, Canada.
Krystal PollittUniversity of Massachusetts, 686 North Pleasant Street, Amherst, Massachusetts, 01003, USA.
Rick T BurnettHealth Canada, 269 Laurier Ave West, Ottawa, K1A 0K9, Ontario, Canada.
Health Canada · CAUniversity of Massachusetts Amherst · USUniversity of Toronto · CAWilfrid Laurier University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRegional differences in the oxidative potential of fine particulate air pollution (PM2.5) may modify its impact on the risk of myocardial infarction.

methodsA case-crossover study was conducted in 16 cities in Ontario, Canada to evaluate the impact of regional PM2.5 oxidative potential on the relationship between PM2.5 and emergency room visits for myocardial infarction. Daily air pollution and meteorological data were collected between 2004 and 2011 from provincial monitoring sites and regional estimates of glutathione (OP(GSH)) and ascorbate-related (OP(AA)) oxidative potential were determined using an acellular assay based on a synthetic respiratory tract lining fluid. Exposure variables for the combined oxidant capacity of NO2 and O3 were also examined using their sum (Ox) and a weighted average (Ox (wt)) based on their redox potentials.

resultsIn total, 30,101 cases of myocardial infarction were included in the analysis. For regions above the 90(th) percentile of OP(GSH) each 5 μg/m(3) increase in same-day PM2.5 was associated with a 7.9 % (95 % CI: 4.1, 12) increased risk of myocardial infarction whereas a 4.1 % (95 % CI: 0.26, 8.0) increase was observed in regions above the 75(th) percentile and no association was observed below the 50(th) percentile (p-interaction = 0.026). A significant 3-way interaction was detected with the strongest associations between PM2.5 and myocardial infarction occurring in areas with high regional OP(GSH) and high Ox (wt) (p-interaction < 0.001).

conclusionsRegional PM2.5 oxidative potential may modify the impact of PM2.5 on the risk of myocardial infarction. The combined oxidant capacity of NO2 and O3 may magnify this effect.

Indexed as

AdolescentAdultAgedAir PollutantsChildChild, PreschoolColoradoCross-Over StudiesEmergency Service, HospitalEnvironmental ExposureEnvironmental MonitoringFiresHumansInfantInfant, NewbornMiddle AgedAir PollutantsParticulate MatterCase-crossoverMyocardial infarctionOxidative potentialParticulate matter

Identifiers

PMID27012244
PMCPMC4806515
OpenAlexW2312067194

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.