Evidence map›Paper›PMID 23803688›Full record

ArticleEpigenetics2013

Blood glutathione redox status and global methylation of peripheral blood mononuclear cell DNA in Bangladeshi adults.

Megan M Niedzwiecki, Megan N Hall, Xinhua Liu, Julie Oka, Kristin N Harper, Vesna Slavkovich, Vesna Ilievski, Diane Levy, Alexander van Geen, Jacob L Mey and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in Epigenetics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

16 citing papers in PubMed, 24 citations in OpenAlex.

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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

15 authors at 5 institutions in 2 countries.

Megan M NiedzwieckiDepartment of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA.
Megan N Hall
Xinhua Liu
Julie Oka
Kristin N Harper
Vesna Slavkovich
Vesna Ilievski
Diane Levy
Alexander van Geen
Jacob L Mey
Shafiul Alam
Abu B Siddique
Faruque Parvez
Joseph H Graziano
Mary V Gamble
Columbia University · USNew York Proton Center · USUniversity of Dhaka · BDLamont-Doherty Earth Observatory · USNew York University · US

Funding

Training CoreP42ES010349 · NIEHS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI NAVAS-ACIEN, ANA · 2000 to 2020
$53.6M
True Metal fac coreP30ES009089 · NIEHS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI MATTHEW S PERZANOWSKI · 1998 to 2026
$44.7M
Training Program in Cancer-Related Population SciencesR25CA094061 · NCI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI NEUGUT, ALFRED I. · 2002 to 2016
$5.9M
CANCER EPIDEMIOLOGY/BIOSTATISTICS/ENVIRONMENTAL SCIENCEST32CA009529 · NCI · COLUMBIA UNIV NEW YORK MORNINGSIDE · PI NEUGUT, ALFRED I. · 1985 to 2012
$4.3M
Folic Acid and Creatine as Therapeutic Approaches for Lowering Blood ArenicR01CA133595 · NCI · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI GAMBLE, MARY · 2009 to 2013
$2.3M
Biomarkers for Arsenic Toxicity: Genetics, Epigenetics and FolateR01ES017875 · NIEHS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI GAMBLE, MARY · 2010 to 2013
$1.9M
Nutrients involved 1-carbon metabolism and the methylation of arsenic and DNAR00ES018890 · NIEHS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI HALL, MEGAN NINA · 2012 to 2014
$731k
NCI NIH HHS 5-R25-CA 094061NCI NIH HHS R01 CA133595NCI NIH HHS R25 CA094061NCI NIH HHS T32 CA009529NCI NIH HHS T32 CA009529-24NIEHS NIH HHS P30 ES009089NIEHS NIH HHS P30 ES09089NIEHS NIH HHS P42 ES010349NIEHS NIH HHS P42 ES10349NIEHS NIH HHS R00 ES018890NIEHS NIH HHS R01 ES017875
6 · The paper itself

Abstract

Oxidative stress and DNA methylation are metabolically linked through the relationship between one-carbon metabolism and the transsulfuration pathway, but possible modulating effects of oxidative stress on DNA methylation have not been extensively studied in humans. Enzymes involved in DNA methylation, including DNA methyltransferases and histone deacetylases, may show altered activity under oxidized cellular conditions. Additionally, in vitro studies suggest that glutathione (GSH) depletion leads to global DNA hypomethylation, possibly through the depletion of S-adenosylmethionine (SAM). We tested the hypothesis that a more oxidized blood GSH redox status is associated with decreased global peripheral blood mononuclear cell (PBMC) DNA methylation in a sample of Bangladeshi adults. Global PBMC DNA methylation and whole blood GSH, glutathione disulfide (GSSG), and SAM concentrations were measured in 320 adults. DNA methylation was measured by using the [ (3)H]-methyl incorporation assay; values are inversely related to global DNA methylation. Whole blood GSH redox status (Eh) was calculated using the Nernst equation. We found that a more oxidized blood GSH Eh was associated with decreased global DNA methylation (B ± SE, 271 ± 103, p = 0.009). Blood SAM and blood GSH were associated with global DNA methylation, but these relationships did not achieve statistical significance. Our findings support the hypothesis that a more oxidized blood GSH redox status is associated with decreased global methylation of PBMC DNA. Furthermore, blood SAM does not appear to mediate this association. Future research should explore mechanisms through which cellular redox might influence global DNA methylation.

Indexed as

AdultBangladeshDNA MethylationFemaleGlutathioneHomocysteineHumansLeukocytes, MononuclearMaleMiddle AgedOxidation-ReductionRegression AnalysisStatistics, NonparametricGlutathioneHomocysteineDNA methylationglutathioneglutathione disulfidehomocysteineoxidative stressperipheral blood mononuclear cellsredox

Identifiers

PMID23803688
PMCPMC3781192
OpenAlexW2048502395

What OpenQuestion holds

Textmetadata
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.