Evidence map›Paper›PMID 27167072›Full record

ArticleJournal of assisted reproduction and genetics2016

Epigenetic alterations of CYP19A1 gene in Cumulus cells and its relevance to infertility in endometriosis.

Elham Hosseini, Fereshteh Mehraein, Maryam Shahhoseini, Leili Karimian, Fatemeh Nikmard, Mahnaz Ashrafi, Parvaneh Afsharian, Reza Aflatoonian

Open access · bronzeAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
8.8field-weighted citation impact, top 3% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

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  20. Role of epigenetic modifications in the aberrantArchives of medical science : AMS · 2019
    Article
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 3 institutions in 1 country.

Elham HosseiniDepartment of Anatomy, School of Medicine, Iran University of Medical Sciences, Hemmat highway, Tehran, 1449614525, Iran.
Fereshteh MehraeinDepartment of Anatomy, School of Medicine, Iran University of Medical Sciences, Hemmat highway, Tehran, 1449614525, Iran. femehra@yahoo.com.
Maryam ShahhoseiniDepartment of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, 1665659911, Iran.
Leili KarimianDepartment of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, 1665659911, Iran.
Fatemeh NikmardDepartment of Anatomy, School of Medicine, Iran University of Medical Sciences, Hemmat highway, Tehran, 1449614525, Iran.
Mahnaz AshrafiDepartment of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Number 12, East Hafez Avenue, Bani Hashem Street, Resalat Highway, Tehran, 1665659911, Iran.
Parvaneh AfsharianDepartment of Genetics, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, 1665659911, Iran.
Reza AflatoonianDepartment of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Number 12, East Hafez Avenue, Bani Hashem Street, Resalat Highway, Tehran, 1665659911, Iran. R.aflatoonian@gmail.com.
Academic Center for Education, Culture and Research · IRIran University of Medical Sciences · IRRoyan Institute · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of the present study was to investigate the epigenetic mechanisms responsible for the aberrant aromatase expression (CYP19A1) in Cumulus Cells (CCs) of infertile endometriosis patients.

methodCumulus cells were obtained from 24 infertile patients with and without endometriosis who underwent ovarian stimulation for intracytoplasmic sperm injection. Expression of CYP19A1 gene was quantified using Reverse Transcription Q-PCR. DNA methylation, histone modifications, and binding of Estrogen Receptor, ERβ to regulatory DNA sequences of CYP19A1 gene were evaluated by Chromatin ImmunoPrecipitation (ChIP) assay.

resultsCYP19A1 gene expression in CCs of endometriosis patients was significantly lower than the control group (P = 0.04). Higher incorporation of MeCP2 (as a marker of DNA methylation) on PII and PI.4 promoters, and hypoacetylation at H3K9 in PII and hypermethylation at H3K9 in PI.4 were observed in CYP19A1 gene in endometriosis patients (P < 0.05). Moreover, a decreased level of ERβ binding to PII and an increased level of its binding to PI.3 and PI.4 promoters of CYP19A1 were observed in endometriosis patients when compared to control.

conclusionSignificant reduction of CYP19A1 gene expression in CCs of endometriosis patients may be the result of epigenetic alterations in its regulatory regions, either by DNA methylation or histone modifications. These epigenetic changes along with differential binding of ERβ (as a transcription factor) in CYP19A1 promoters may impair follicular steroidogenesis, leading to poor Oocyte and embryo condition in endometriosis patients.

Indexed as

AromataseCross-Sectional StudiesCumulus CellsDNA MethylationEndometriosisEpigenesis, GeneticEstrogen Receptor betaFemaleGenetic Association StudiesHistone CodeHumansInfertilityOocytesOvulation InductionPromoter Regions, GeneticSperm Injections, IntracytoplasmicAromataseCYP19A1 protein, humanEstrogen Receptor betaCumulus cellCYP19A1EndometriosisEpigeneticEstrogen receptor beta

Identifiers

PMID27167072
PMCPMC4974225
OpenAlexW2377462967

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.