Evidence map›Paper›PMID 32385190›Full record

ArticleOccupational and environmental medicine2020

Fluorene exposure among PAH-exposed workers is associated with epigenetic markers related to lung cancer.

Ayman Alhamdow, Yona J Essig, Annette M Krais, Per Gustavsson, Håkan Tinnerberg, Christian H Lindh, Jessika Hagberg, Pål Graff, Maria Albin, Karin Broberg

Open access · hybridAbstract read
In one paragraph

Article in Occupational and environmental medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 11% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
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  13. Biomarkers after Controlled Inhalation Exposure to Exhaust from Hydrogenated Vegetable Oil (HVO).International journal of environmental research and public health · 2021
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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 2 countries.

Ayman Alhamdow *Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.ORCID 0000-0002-3643-0518
Yona J Essig *Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.
Annette M KraisDepartment of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.
Per GustavssonInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.ORCID 0000-0003-2221-8599
Håkan TinnerbergSchool of Public Health and Community Medicine, Section of Occupational and Environmental Medicine, University of Gothenburg Sahlgrenska Academy, Göteborg, Sweden.
Christian H LindhDepartment of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.
Jessika HagbergMTM Research Centre, Örebro universitet Akademin för Naturvetenskap och Teknik, Orebro, Sweden.
Pål GraffDepartment of Chemical and Biological Work Environment, STAMI, Oslo, Norway.ORCID 0000-0003-4928-617X
Maria AlbinInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Karin BrobergInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden karin.broberg@ki.se.ORCID 0000-0002-5862-468X
Lund University · SEKarolinska Institutet · SENational Institute of Occupational Health · NOÖrebro University · SEUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesExposure to high-molecular-weight polycyclic aromatic hydrocarbons (PAHs) may cause cancer in chimney sweeps and creosote-exposed workers, however, knowledge about exposure to low-molecular-weight PAHs in relation to cancer risk is limited. In this study, we aimed to investigate occupational exposure to the low-molecular-weight PAHs phenanthrene and fluorene in relation to different cancer biomarkers.

methodsWe recruited 151 chimney sweeps, 19 creosote-exposed workers and 152 unexposed workers (controls), all men. We measured monohydroxylated metabolites of phenanthrene and fluorene in urine using liquid chromatography coupled to tandem mass spectrometry. We measured, in peripheral blood, the cancer biomarkers telomere length and mitochondrial DNA copy number using quantitative PCR; and DNA methylation of

resultsMedian PAH metabolite concentrations were higher among chimney sweeps (up to 3 times) and creosote-exposed workers (up to 353 times), compared with controls (p<0.001; adjusted for age and smoking). ∑OH-fluorene (sum of 2-hydroxyfluorene and 3-hydroxyfluorene) showed inverse associations with percentage DNA methylation of

conclusionsChimney sweeps and creosote-exposed workers were occupationally exposed to low-molecular-weight PAHs. Increasing fluorene exposure, among chimney sweeps, was associated with lower DNA methylation of

Indexed as

Epigenesis, GeneticAdultAgedBiomarkers, TumorCreosoteCross-Sectional StudiesDNA MethylationDNA, MitochondrialFluorenesHumansLung NeoplasmsMaleMiddle AgedOccupational ExposurePhenanthrenesPolycyclic Aromatic HydrocarbonsBiomarkers, TumorCreosoteDNA, MitochondrialfluoreneFluorenesphenanthrenePhenanthrenesPolycyclic Aromatic Hydrocarbonscancercross sectional studieshealth care workersrisk assessmentsmoking

Identifiers

PMID32385190
PMCPMC7306866
OpenAlexW3023125875

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LicenceCC BY
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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.