Evidence map›Paper›PMID 20661447›Full record

ArticlePLoS genetics2010

Inter- and intra-individual variation in allele-specific DNA methylation and gene expression in children conceived using assisted reproductive technology.

Nahid Turan, Sunita Katari, Leigh F Gerson, Raffi Chalian, Michael W Foster, John P Gaughan, Christos Coutifaris, Carmen Sapienza

Open access · goldAbstract readComparative Study
In one paragraph

Article in PLoS genetics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 2 pooled it
11.2field-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

73 citing papers in PubMed, 2 syntheses or guidelines pooled it, 168 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Mitochondrial DNA Deficiency and Supplementation inInternational journal of molecular sciences · 2023
    Article
  8. Metabolomic Profile of Children Conceived With Medically Assisted Technologies.The Journal of clinical endocrinology and metabolism · 2023
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Review
  14. Review
  15. Epigenetic Modifications at the Center of the Barker Hypothesis and Their Transgenerational Implications.International journal of environmental research and public health · 2021
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

13 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

8 authors at 2 institutions in 1 country.

Nahid TuranFels Institute for Cancer Research and Molecular Biology, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America.
Sunita Katari
Leigh F Gerson
Raffi Chalian
Michael W Foster
John P Gaughan
Christos Coutifaris
Carmen Sapienza
Temple University · USUniversity of Pennsylvania · US

Funding

Stability of epigenetic structures in ART childrenR01HD048730 · NICHD · TEMPLE UNIV OF THE COMMONWEALTH · PI SAPIENZA, CARMEN · 2006 to 2010
$2.5M
NICHD NIH HHS R01 HD048730
6 · The paper itself

Abstract

Epidemiological studies have reported a higher incidence of rare disorders involving imprinted genes among children conceived using assisted reproductive technology (ART), suggesting that ART procedures may be disruptive to imprinted gene methylation patterns. We examined intra- and inter-individual variation in DNA methylation at the differentially methylated regions (DMRs) of the IGF2/H19 and IGF2R loci in a population of children conceived in vitro or in vivo. We found substantial variation in allele-specific methylation at both loci in both groups. Aberrant methylation of the maternal IGF2/H19 DMR was more common in the in vitro group, and the overall variance was also significantly greater in the in vitro group. We estimated the number of trophoblast stem cells in each group based on approximation of the variance of the binomial distribution of IGF2/H19 methylation ratios, as well as the distribution of X chromosome inactivation scores in placenta. Both of these independent measures indicated that placentas of the in vitro group were derived from fewer stem cells than the in vivo conceived group. Both IGF2 and H19 mRNAs were significantly lower in placenta from the in vitro group. Although average birth weight was lower in the in vitro group, we found no correlation between birth weight and IGF2 or IGF2R transcript levels or the ratio of IGF2/IGF2R transcript levels. Our results show that in vitro conception is associated with aberrant methylation patterns at the IGF2/H19 locus. However, very little of the inter- or intra-individual variation in H19 or IGF2 mRNA levels can be explained by differences in maternal DMR DNA methylation, in contrast to the expectations of current transcriptional imprinting models. Extraembryonic tissues of embryos cultured in vitro appear to be derived from fewer trophoblast stem cells. It is possible that this developmental difference has an effect on placental and fetal growth.

Indexed as

DNA MethylationAdultAllelesCell CountFemaleGene Expression RegulationHumansInfant, NewbornInsulin-Like Growth Factor IIPlacentaPregnancyReproductive Techniques, AssistedRNA, Long NoncodingRNA, UntranslatedStem CellsTrophoblastsH19 long non-coding RNAInsulin-Like Growth Factor IIRNA, Long NoncodingRNA, Untranslated

Identifiers

PMID20661447
PMCPMC2908687
OpenAlexW1992541066

What OpenQuestion holds

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LicenceCC BY
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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.