Evidence map›Paper›PMID 21245875›Full record

ArticleEuropean journal of clinical nutrition2011

Relationship of folate, vitamin B12 and methylation of insulin-like growth factor-II in maternal and cord blood.

Y Ba, H Yu, F Liu, X Geng, C Zhu, Q Zhu, T Zheng, S Ma, G Wang, Z Li and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in European journal of clinical nutrition, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 3 pooled it
4.4field-weighted citation impact, top 5% 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

49 citing papers in PubMed, 3 syntheses or guidelines pooled it, 108 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

11 authors at 4 institutions in 2 countries.

Y BaSchool of Public Health, Zhengzhou University, Zhengzhou, China.
H Yu
F Liu
X Geng
C Zhu
Q Zhu
T Zheng
S Ma
G Wang
Z Li
Y Zhang
Yale University · USZhengzhou University · CNZhengzhou City Hospital · CNSichuan University · CN

Funding

YALE UNIVERSITY CLINICAL AND TRANSLATIONAL SCIENCE AWARD PROGRAMUL1RR024139 · NCRR · YALE UNIVERSITY · PI SHERWIN, ROBERT S · 2006 to 2011
$56.8M
Research Training for Cancer Epidemiology & Biostatistics in ChinaD43TW008323 · FIC · YALE UNIVERSITY · PI HOLFORD, THEODORE R, ZHENG, TONGZHANG · 2009 to 2013
$1.1M
Research Training for Study of Air Pollution Control in ChinaD43TW007864 · FIC · YALE UNIVERSITY · PI ZHENG, TONGZHANG · 2007 to 2011
$706k
HAIR DYE USE AND RISK OF NONHODGKINS LYMPHOMAR01CA062006 · NCI · YALE UNIVERSITY · PI ZHENG, TONGZHANG · 1995 to 2000
$125k
FIC NIH HHS 1D43TW007864-01FIC NIH HHS 1D43TW008323-01FIC NIH HHS D43 TW007864FIC NIH HHS D43 TW008323NCI NIH HHS R01 CA062006NCRR NIH HHS UL1 RR024139
6 · The paper itself

Abstract

BACKGROUND/

objectiveOne of the speculated mechanisms underlying fetal origin hypothesis of breast cancer is the possible influence of maternal environment on epigenetic regulation, such as changes in DNA methylation of the insulin-like growth factor-2 (IGF2) gene. The aim of the study is to investigate the relationship between folate, vitamin B(12) and methylation of the IGF2 gene in maternal and cord blood. SUBJECTS/

methodsWe conducted a cross-sectional study to measure methylation patterns of IGF2 in promoters 2 (P2) and promoters 3 (P3).

resultsThe percentage of methylation in IGF2 P3 was higher in maternal blood than in cord blood (P<0.0001), whereas the methylation in P2 was higher in cord blood than in maternal blood (P=0.016). P3 methylation was correlated between maternal and cord blood (P<0.0001), but not P2 (P=0.06). The multivariate linear regression model showed that methylation patterns of both promoters in cord blood were not associated with serum folate levels in either cord or maternal blood, whereas the P3 methylation patterns were associated with serum levels of vitamin B(12) in mother's blood (mean change (MC)=-0.22, P=0.0014). Methylation patterns in P2 of maternal blood were associated with serum levels of vitamin B(12) in mother's blood (MC=-0.23, P=0.012), exposure to passive smoking (MC=0.46, P=0.034) and mother's weight gain during pregnancy (MC=0.23, P=0.019).

conclusionsThe study suggests that environment influences methylation patterns in maternal blood, and then the maternal patterns influence the methylation status and levels of folate and vitamin B(12) in cord blood.

Indexed as

DNA MethylationAdultBirth WeightCross-Sectional StudiesEpigenomicsFemaleFetal BloodFolic AcidHumansInfant, NewbornInsulin-Like Growth Factor IILinear ModelsMalePilot ProjectsPregnancyPromoter Regions, GeneticFolic AcidInsulin-Like Growth Factor IIVitamin B 12Vitamin B Complex

Identifiers

PMID21245875
PMCPMC3071883
OpenAlexW2099935212

What OpenQuestion holds

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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.