Evidence map›Paper›PMID 29422991›Full record

ArticleAmerican journal of translational research2018

Preeclampsia is associated with hypermethylation of IGF-1 promoter mediated by DNMT1.

Min Ma, Qiong-Jie Zhou, Yu Xiong, Bin Li, Xiao-Tian Li

Open access · greenAbstract read
In one paragraph

Article in American journal of translational research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
4.2field-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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Advances in pathogenesis of preeclampsia.Archives of gynecology and obstetrics · 2024
    Pooled it
  2. MBD1-Mediated SDHD Methylation Aggravates Preeclampsia Progression via Triggering Mitochondrial Dysfunction.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
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  9. Epigenetics and Pregnancy: Conditional Snapshot or Rolling Event.International journal of molecular sciences · 2022
    Review
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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

5 authors at 2 institutions in 2 countries.

Min MaDepartment of Obstetrics, Obstetrics and Gynecology Hospital of Fudan UniversityShanghai 200011, China.
Qiong-Jie ZhouDepartment of Obstetrics, Obstetrics and Gynecology Hospital of Fudan UniversityShanghai 200011, China.
Yu XiongDepartment of Obstetrics, Obstetrics and Gynecology Hospital of Fudan UniversityShanghai 200011, China.
Bin LiShanghai Key Laboratory of Female Reproductive Endocrine Related DiseasesShanghai 200011, China.
Xiao-Tian LiDepartment of Obstetrics, Obstetrics and Gynecology Hospital of Fudan UniversityShanghai 200011, China.
Fudan University · CNShanghai Medical College of Fudan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous studies have demonstrated a dynamic epigenetic regulation of genes expression in placenta trophoblasts and a dynamic imbalance of DNA methylation and hydroxymethylation. Reduced IGF-1 has been observed in preeclampsia. This study was to investigate the interactive roles between IGF-1 and the global DNA methylation/hydroxymethylation, and the status of DNA methylation/hydroxymethylation and associated enzymes such as DNMTs and TETs in peeeclamptic placentas and hypoxic trophoblasts. It was found that IGF-1 was decreased in preeclamptic placentas and hypoxic trophoblasts when compared to the control group using immunohistochemisty, western blot, qRT-PCR and ELISA. Pyrophosphate sequencing showed IGF-1 promoter was significantly hypermethylated in preeclamptic placentas, which was responsible for reduced IGF-1 expression. Preeclamptic placentas and hypoxic trophoblasts were hypermethylated and hypohydroxymethylated accompanied by remarkably higher 5mC, DNMT1 and DNMT3b, and lower DNMT3a, 5hmC, TET1, TET2 and TET3 detected by immunohistochemisty, western blot, qRT-PCR and ELISA. Pearson's correlation confirmed a statistically significant negative correlation between IGF-1 and DNMT1. Furthermore, both treatment with 5-Aza-dc and DNMT1-siRNA significantly increased the expression of IGF-1 in HTR8 cells, indicating the potential mechanism of DNMT1-mediated DNA methylation in IGF-1 regulation. However, IGF-1 didn't change DNA methylation or hydroxymethylation. These findings suggest that preeclampsia is associated with hypermethylation of IGF-1 promoter mediated by DNMT1 and provide new insights into the diagnosis and treatment of preeclampsia.

Indexed as

5mC/5hmCDNA methylation/hydroxymethylationDNMTsIGF-1PreeclampsiaTETs

Identifiers

PMID29422991
PMCPMC5801344
OpenAlexW2986452695

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.