Evidence map›Paper›PMID 21636975›Full record

ArticleEpigenetics2011

Methylation variation at IGF2 differentially methylated regions and maternal folic acid use before and during pregnancy.

Cathrine Hoyo, Amy P Murtha, Joellen M Schildkraut, Randy L Jirtle, Wendy Demark-Wahnefried, Michele R Forman, Edwin S Iversen, Joanne Kurtzberg, Francine Overcash, Zhiqing Huang and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Epigenetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed, 7 pooled it
9.8field-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

142 citing papers in PubMed, 7 syntheses or guidelines pooled it, 247 citations in OpenAlex.

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  15. Tobacco Exposures are Associated With Healthcare Utilization and Healthcare Costs in Pregnant Persons and Their Newborn Babies.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024
    Article
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82 more citing papers are in PubMed but not listed here.

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

11 authors at 7 institutions in 2 countries.

Cathrine HoyoDepartment of Community and Family Medicine, Duke University Medical Center, Durham, NC, USA. cathrine.hoyo@duke.edu
Amy P Murtha
Joellen M Schildkraut
Randy L Jirtle
Wendy Demark-Wahnefried
Michele R Forman
Edwin S Iversen
Joanne Kurtzberg
Francine Overcash
Zhiqing Huang
Susan K Murphy
Duke Medical Center · USThe University of Texas MD Anderson Cancer Center · USChinese Center For Disease Control and Prevention · CNDecision Sciences (United States) · USDuke University · USDuke University Hospital · USGynecologic Oncology Group · US

Funding

Nutrition, Deregulation of Imprinted GenesR01ES016772 · NIEHS · DUKE UNIVERSITY · PI HOYO, CATHRINE · 2009 to 2013
$3.1M
Obesity and deregulation of imprinted genes in early lifeR01DK085173 · NIDDK · DUKE UNIVERSITY · PI HOYO, CATHRINE, MURPHY, SUSAN KAY · 2010 to 2013
$2.3M
Insulin-like Growth Factors and Esophageal CancerK01CA104517 · NCI · DUKE UNIVERSITY · PI HOYO, CATHRINE · 2004 to 2008
$671k
In-utero Exposure and Infant Loss of IGF2 ImprintingR21ES014947 · NIEHS · DUKE UNIVERSITY · PI HOYO, CATHRINE · 2006 to 2007
$384k
NCI NIH HHS K01 CA104517NCI NIH HHS K01-CA104517NCI NIH HHS K01CA104517NIDDK NIH HHS R01 DK085173NIEHS NIH HHS R01 ES016772NIEHS NIH HHS R01ES016772NIEHS NIH HHS R21 ES014947NIEHS NIH HHS R21ES014947
6 · The paper itself

Abstract

Folic acid (FA) supplementation before and during pregnancy has been associated with decreased risk of neural tube defects although recent reports suggest it may also increase the risk of other chronic diseases. We evaluated exposure to maternal FA supplementation before and during pregnancy in relation to aberrant DNA methylation at two differentially methylated regions (DMRs) regulating Insulin-like Growth Factor 2 (IGF2) expression in infants. Aberrant methylation at these regions has been associated with IGF2 deregulation and increased susceptibility to several chronic diseases. Using a self-administered questionnaire, we assessed FA intake before and during pregnancy in 438 pregnant women. Pyrosequencing was used to measure methylation at two IGF2 DMRs in umbilical cord blood leukocytes. Mixed models were used to determine relationships between maternal FA supplementation before or during pregnancy and DNA methylation levels at birth. Average methylation at the H19 DMR was 61.2%. Compared to infants born to women reporting no FA intake before or during pregnancy, methylation levels at the H19 DMR decreased with increasing FA intake (2.8%, p=0.03, and 4.9%, p=0.04, for intake before and during pregnancy, respectively). This methylation decrease was most pronounced in male infants (p=0.01). Methylation alterations at the H19 DMR are likely an important mechanism by which FA risks and/or benefits are conferred in utero. Because stable methylation marks at DMRs regulating imprinted genes are acquired before gastrulation, they may serve as archives of early exposures with the potential to improve our understanding of developmental origins of adult disease.

Indexed as

DNA MethylationAdolescentFemaleFolic AcidHumansInsulin-Like Growth Factor IIMiddle AgedPregnancyFolic AcidInsulin-Like Growth Factor II

Identifiers

PMID21636975
PMCPMC3154433
OpenAlexW2004708040

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.