Evidence map›Paper›PMID 19027158›Full record

ArticlePlacenta2009

Altered global gene expression in first trimester placentas of women destined to develop preeclampsia.

S A Founds, Y P Conley, J F Lyons-Weiler, A Jeyabalan, W Allen Hogge, K P Conrad

Abstract read
In one paragraph

Article in Placenta, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 124 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
124citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

124 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Antagonisation of Prokineticin Receptor-2 Attenuates Preeclampsia Symptoms.Journal of cellular and molecular medicine · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Pre-eclampsia.Nature reviews. Disease primers · 2023
    Review
  19. Review
  20. Article

64 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

6 authors.

S A FoundsSchool of Nursing, Department of Health Promotion and Development, University of Pittsburgh, Pittsburgh, PA 15261, USA. foundss@pitt.edu
Y P Conley
J F Lyons-Weiler
A Jeyabalan
W Allen Hogge
K P Conrad

Funding

UNIVERSITY OF PITTSBURGH CLINICAL AND TRANSLATIONAL SCIENCE INSTITUTE: BPCAUL1RR024153 · NCRR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2006 to 2011
$73.9M
TROPHOBLAST PRODUCTS IN GENESIS OF PREECLAMPSIAP01HD030367 · NICHD · MAGEE-WOMEN'S RES INST AND FOUNDATION · PI HUBEL, CARL A · 1993 to 2012
$17.2M
Relaxin: The 'Elusive'Vasodilator of PregnancyR01HL067937 · NHLBI · UNIVERSITY OF FLORIDA · PI CONRAD, KIRK P · 2001 to 2009
$2.2M
NCRR NIH HHS 1 UL1 RR024153NCRR NIH HHS UL1 RR024153NHLBI NIH HHS R01 HL067937NHLBI NIH HHS R01 HL67937NICHD NIH HHS P01 HD030367NICHD NIH HHS P01 HD30367
6 · The paper itself

Abstract

backgroundPreeclampsia is a pregnancy-specific disorder that remains a leading cause of maternal, fetal and neonatal morbidity and mortality, and is associated with risk for future cardiovascular disease. There are no reliable predictors, specific preventative measures or treatments other than delivery. A widely held view is that the antecedents of preeclampsia lie with impaired placentation in early pregnancy. Accordingly, we hypothesized dysregulation of global gene expression in first trimester placentas of women who later manifested preeclampsia.

methodsSurplus chorionic villus sampling (CVS) tissues were collected at 10-12 weeks gestation in 160 patients with singleton fetuses. Four patients developed preeclampsia, and their banked CVS specimens were matched to 8 control samples from patients with unaffected pregnancies. Affymetrix HG-U133 Plus 2.0 GeneChips were utilized for microarray analysis. Naïve Bayes prediction modeling and pathway analysis were conducted. qRT-PCR examined three of the dysregulated genes.

resultsThirty-six differentially expressed genes were identified in the preeclampsia placentas. qRT-PCR verified the microarray analysis. Thirty-one genes were down-regulated. Many were related to inflammation/immunoregulation and cell motility. Decidual gene dysregulation was prominent. No evidence was found for alterations in hypoxia and oxidative stress regulated genes.

conclusionsTo our knowledge, this is the first study to show dysregulation of gene expression in the early placentas of women approximately 6 months before developing preeclampsia, thereby reinforcing a placental origin of the disorder. We hypothesize that placentation in preeclampsia is compromised in the first trimester by maternal and fetal immune dysregulation, abnormal decidualization, or both, thereby impairing trophoblast invasion. Several of the genes provide potential targets for the development of clinical biomarkers in maternal blood during the first trimester. Supplementary materials are available for this article via the publisher's online edition.

Indexed as

Gene Expression ProfilingGene Expression Regulation, DevelopmentalGenome-Wide Association StudyAdultBiomarkersChorionic VilliDown-RegulationFemaleGenetic Predisposition to DiseaseHumansOligonucleotide Array Sequence AnalysisPre-EclampsiaPregnancyPregnancy Trimester, FirstBiomarkers

Identifiers

PMID19027158
PMCPMC2667803

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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.