Evidence map›Paper›PMID 33008417›Full record

ReviewParticle and fibre toxicology2020

Controlled human exposures to wood smoke: a synthesis of the evidence.

Carley Schwartz, Anette Kocbach Bølling, Christopher Carlsten

Registry-linked trialAbstract readReview
In one paragraph

Review in Particle and fibre toxicology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05753254 (Effect on Markers of Cardiovascular, Reproductive and Cancer Risk From Firefighting Activities - a Study Under Different Training Methods), which is not on this map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
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.

NCT05753254 nacompletednot on this mapstarted 2023, after this paper: background citation

Effect on Markers of Cardiovascular, Reproductive and Cancer Risk From Firefighting Activities - a Study Under Different Training Methods

TypeinterventionalSponsorNational Research Centre for the Working Environment, DenmarkRan2023 to 2024Enrolled35ConditionsReactive Hyperemia, Micro RNA, Heart Rate Variability, DNA Strand BreaksArmsFirefighting training exercises with no fire, Firefighting training exercises under wood fire, Firefighting training exercises under gas fire
3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Article
  4. Article
  5. Characterization of woodsmoke generated in the air pollution exposure lab and comparison to diesel exhaust.Toxicological sciences : an official journal of the Society of Toxicology · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Indoor air pollution and airway health.The Journal of allergy and clinical immunology · 2024
    Review
  13. Review
  14. Article
  15. The Effects of Wildfire Smoke on Asthma and Allergy.Current allergy and asthma reports · 2023
    Review
  16. Health impacts of PMBMC public health · 2022
    Article
  17. Article
  18. Application of a Novel Collection of Exhaled Breath Condensate to Exercise Settings.International journal of environmental research and public health · 2022
    Article
  19. Review
  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

3 authors.

Carley SchwartzDepartment of Medicine, Division of Respiratory Medicine, University of British Columbia, P: 604-875-4729, 2775 Laurel Street 10th Floor, Vancouver, BC, V5Z 1M9, Canada.
Anette Kocbach BøllingSection of Air Pollution and Noise, Department of Environmental Health, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213, Oslo, Norway.
Christopher CarlstenDepartment of Medicine, Division of Respiratory Medicine, University of British Columbia, P: 604-875-4729, 2775 Laurel Street 10th Floor, Vancouver, BC, V5Z 1M9, Canada. carlsten@mail.ubc.ca.ORCID 0000-0003-2455-6575

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExposure to particulate matter (PM) from wood combustion represents a global health risk, encompassing diverse exposure sources; indoor exposures due to cooking in developing countries, ambient PM exposures from residential wood combustion in developed countries, and the predicted increasing number of wildfires due to global warming. Although physicochemical properties of the PM, as well as the exposure levels vary considerably between these sources, controlled human exposure studies may provide valuable insight to the harmful effects of wood smoke (WS) exposures in general. However, no previous review has focused specifically on controlled human exposure studies to WS.

resultsThe 22 publications identified, resulting from 12 controlled human studies, applied a range of combustion conditions, exposure levels and durations, and exercise components in their WS exposure. A range of airway, cardiovascular and systemic endpoints were assessed, including lung function and heart rate measures, inflammation and oxidative stress. However, the possibility for drawing general conclusions was precluded by the large variation in study design, resulting in differences in physicochemical properties of WS, effective dose, as well as included endpoints and time-points for analysis. Overall, there was most consistency in reported effects for airways, while oxidative stress, systemic inflammation and cardiovascular physiology did not show any clear patterns.

conclusionBased on the reviewed controlled human exposure studies, conclusions regarding effects of acute WS exposure on human health are premature. Thus, more carefully conducted human studies are needed. Future studies should pay particular attention to the applied WS exposure, to assure that both exposure levels and PM properties reflect the research question.

Indexed as

Air PollutantsAir Pollution, IndoorInflammationInhalation ExposureOxidative StressParticulate MatterSmokeWoodAir PollutantsParticulate MatterSmokeAirwayControlled human exposureInflammationReviewSystemicWood smoke

Identifiers

PMID33008417
PMCPMC7530963

What OpenQuestion holds

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Registered trials

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.