Evidence map›Paper›PMID 25800063›Full record

ArticleEpigenetics2015

Mendelian randomization supports causality between maternal hyperglycemia and epigenetic regulation of leptin gene in newborns.

C Allard, V Desgagné, J Patenaude, M Lacroix, L Guillemette, M C Battista, M Doyon, J Ménard, J L Ardilouze, P Perron and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Epigenetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 5 pooled it
13.1field-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

68 citing papers in PubMed, 5 syntheses or guidelines pooled it, 137 citations in OpenAlex.

  1. Epigenetic Mechanisms in Childhood Obesity.Annals of the New York Academy of Sciences · 2025
    Pooled it
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  10. Epigenetic regulation in a high-sugar environment (Review).International journal of molecular medicine · 2026
    Review
  11. Article
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  13. Gestational Glucose Intolerance and Risk of Obesity in Childhood and Adolescence.The Journal of clinical endocrinology and metabolism · 2025
    Article
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  15. Review
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8 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

12 authors at 3 institutions in 3 countries.

C Allarda Department of Mathematics ; Faculty of Sciences; Université de Sherbrooke ; Sherbrooke , QC Canada.
V Desgagné
J Patenaude
M Lacroix
L Guillemette
M C Battista
M Doyon
J Ménard
J L Ardilouze
P Perron
L Bouchard
M F Hivert
Université de Sherbrooke · CACentre Hospitalier Universitaire de Sherbrooke · CAUniversité du Québec à Chicoutimi · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Leptin is an adipokine that acts in the central nervous system and regulates energy balance. Animal models and human observational studies have suggested that leptin surge in the perinatal period has a critical role in programming long-term risk of obesity. In utero exposure to maternal hyperglycemia has been associated with increased risk of obesity later in life. Epigenetic mechanisms are suspected to be involved in fetal programming of long term metabolic diseases. We investigated whether DNA methylation levels near LEP locus mediate the relation between maternal glycemia and neonatal leptin levels using the 2-step epigenetic Mendelian randomization approach. We used data and samples from up to 485 mother-child dyads from Gen3G, a large prospective population-based cohort. First, we built a genetic risk score to capture maternal glycemia based on 10 known glycemic genetic variants (GRS10) and showed it was an adequate instrumental variable (β = 0.046 mmol/L of maternal fasting glucose per additional risk allele; SE = 0.007; P = 7.8 × 10(-11); N = 467). A higher GRS10 was associated with lower methylation levels at cg12083122 located near LEP (β = -0.072 unit per additional risk allele; SE = 0.04; P = 0.05; N = 166). Direction and effect size of association between the instrumental variable GRS10 and methylation at cg12083122 were consistent with the negative association we observed using measured maternal glycemia. Lower DNA methylation levels at cg12083122 were associated with higher cord blood leptin levels (β = -0.17 log of cord blood leptin per unit; SE = 0.07; P = 0.01; N = 170). Our study supports that maternal glycemia is part of causal pathways influencing offspring leptin epigenetic regulation.

Indexed as

Epigenesis, GeneticGene Expression RegulationMaternal-Fetal ExchangeAdultCohort StudiesDNA MethylationFemaleGlucoseHumansHyperglycemiaInfant, NewbornLeptinMaleMendelian Randomization AnalysisPregnancyGlucoseLeptinBMI, Body Mass IndexCDA, Canadian Diabetes AssociationCHUS, Centre hospitalier universitaire de SherbrookeCpGs, CG dinucleotidesDNAm, DNA methylationDNA methylationDOHaD, Developmental Origins of Health and Diseasefetal programmingGCT, Glucose Challenge TestGDM, Gestational Diabetes Mellitusgestational diabetesglycemiaGRS, Genetic Risk ScoreIADPSG, International Association of the Diabetes and Pregnancy Study GroupsIV, Instrumental VariableleptinMAGIC, Meta-Analyses of Glucose and Insulin-related traits ConsortiumMDS, Multidimensional ScalingMendelian randomizationmQTL, methylation Quantitative Trait LocusMR, Mendelian RandomizationobesityOGTT, Oral Glucose Tolerance TestpregnancySGA, Small for Gestational AgeSNPs, Single Nucleotide PolymorphismsTSLS, Two-Stage Least Square

Identifiers

PMID25800063
PMCPMC4622547
OpenAlexW1560118831

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.