Evidence map›Paper›PMID 29722794›Full record

ArticleCarcinogenesis2018

DNA methylation of the cancer-related genes F2RL3 and AHRR is associated with occupational exposure to polycyclic aromatic hydrocarbons.

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

Open access · bronzeAbstract read
In one paragraph

Article in Carcinogenesis, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.6field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 42 citations in OpenAlex.

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  9. Dynamic changes of DNA methylation induced by benzo(a)pyrene in cancer.Genes and environment : the official journal of the Japanese Environmental Mutagen Society · 2023
    Review
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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 4 institutions in 2 countries.

Ayman AlhamdowInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Christian LindhDivision of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.
Jessika HagbergMTM Research Centre, School of Science and Technology, Örebro University, Örebro, Sweden.
Pål GraffDepartment of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Håkan WestbergMTM Research Centre, School of Science and Technology, Örebro University, Örebro, Sweden.
Annette M KraisDivision of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.
Maria AlbinInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Per GustavssonInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Håkan TinnerbergDivision of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.
Karin BrobergInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Lund University · SEÖrebro University · SEKarolinska Institutet · SEStockholm County Council · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Some polycyclic aromatic hydrocarbons (PAH) are known carcinogens and workplace PAH exposure may increase the risk of cancer. Monitoring early cancer-related changes can indicate whether the exposure is carcinogenic. Here, we enrolled 151 chimney sweeps, 152 controls and 19 creosote-exposed male workers from Sweden. We measured urinary PAH metabolites using LC/MS/MS, the cancer-related markers telomere length (TL) and mitochondrial DNA copy number (mtDNAcn) using qPCR, and DNA methylation of lung cancer-related genes F2RL3 and AHRR using pyrosequencing. The median 1-hydroxypyrene (PAH metabolite) concentrations were highest in creosote-exposed workers (8.0 μg/g creatinine) followed by chimney sweeps (0.34 μg/g creatinine) and controls (0.05 μg/g creatinine). TL and mtDNAcn did not differ between study groups. Chimney sweeps and creosote-exposed workers had significantly lower methylation of AHRR CpG site cg05575921 (88.1 and 84.9%, respectively) than controls (90%). Creosote-exposed workers (73.3%), but not chimney sweeps (76.6%) had lower methylation of F2RL3 cg03636183 than controls (76.7%). Linear regression analyses showed that chimney sweeps had lower AHRR cg05575921 methylation (B = -2.04; P < 0.057, adjusted for smoking and age) and lower average AHRR methylation (B = -2.05; P < 0.035), and non-smoking chimney sweeps had lower average F2RL3 methylation (B = -0.81; P < 0.042, adjusted for age) compared with controls. These cancer-related markers were not associated with urinary concentrations of PAH metabolites. In conclusion, although we found no associations with PAH metabolites in urine (short-term exposure), our results suggest dose-response relationship between PAH exposure and DNA hypomethylation of lung cancer-related loci. These findings indicate that further protective measures should be taken to reduce PAH exposure.

Indexed as

AdultAgedBasic Helix-Loop-Helix ProteinsBiomarkers, TumorCarcinogensCreosoteDNA MethylationDNA, MitochondrialHumansLung NeoplasmsMaleMiddle AgedOccupational ExposurePolycyclic Aromatic HydrocarbonsReceptors, ThrombinRepressor ProteinsAHRR protein, humanBasic Helix-Loop-Helix ProteinsBiomarkers, TumorCarcinogensCreosoteDNA, MitochondrialPolycyclic Aromatic Hydrocarbonsprotease-activated receptor 4Receptors, ThrombinRepressor Proteins

Identifiers

PMID29722794
PMCPMC6030939
OpenAlexW2800067138

What OpenQuestion holds

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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.