Evidence map›Paper›PMID 22262697›Full record

ArticleBiology of reproduction2012

Human placental expression of SLIT/ROBO signaling cues: effects of preeclampsia and hypoxia.

Wu-Xiang Liao, Louise C Laurent, Sally Agent, Jennifer Hodges, Dong-Bao Chen

Open access · bronzeAbstract read
In one paragraph

Article in Biology of reproduction, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.3field-weighted citation impact, top 6% 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

29 citing papers in PubMed, 52 citations in OpenAlex.

  1. Transcriptomic Analysis ofInternational journal of molecular sciences · 2026
    Article
  2. Transcriptomic Analysis ofbioRxiv : the preprint server for biology · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Hypoxia Pathway Proteins and Their Impact on the Blood Vasculature.International journal of molecular sciences · 2021
    Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Identification of mundoserone by zebrafishExperimental and therapeutic medicine · 2018
    Article
  19. Article
  20. MicroRNA-218-5p Promotes Endovascular Trophoblast Differentiation and Spiral Artery Remodeling.Molecular therapy : the journal of the American Society of Gene Therapy · 2018
    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

5 authors at 2 institutions in 1 country.

Wu-Xiang LiaoDepartment of Obstetrics & Gynecology, University of California Irvine, Irvine, California 92697, USA.
Louise C Laurent
Sally Agent
Jennifer Hodges
Dong-Bao Chen
University of California, Irvine · USUniversity of California San Diego · US

Funding

UC San Diego Womens Reproductive Health Research ProgramK12HD001259 · NICHD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CYNTHIA GYAMFI-BANNERMAN · 1999 to 2026
$9.1M
Actions of Estrogen on Uterine Artery EndotheliumR01HL070562 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CHEN, DONGBAO · 2001 to 2025
$6.3M
Caveolin-1, Caveolae and Placental AngiogenesisR01HL074947 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CHEN, DONGBAO · 2004 to 2007
$1.3M
Estrogen and Endothelial Protein NitrosylationR21HL098746 · NHLBI · UNIVERSITY OF CALIFORNIA-IRVINE · PI CHEN, DONGBAO · 2010 to 2011
$421k
Slit/Robo Signaling and Placental AngiogenesisR03HD058242 · NICHD · UNIVERSITY OF CALIFORNIA-IRVINE · PI LIAO, WUXIANG · 2008 to 2009
$153k
NHLBI NIH HHS R01 HL070562NHLBI NIH HHS R01 HL074947NHLBI NIH HHS R01 HL70562NHLBI NIH HHS R01 HL74947NHLBI NIH HHS R21 HL098746NHLBI NIH HHS R21 HL98746NICHD NIH HHS 5K12HD001259NICHD NIH HHS K12 HD001259NICHD NIH HHS R03 HD058242
6 · The paper itself

Abstract

Preeclampsia is characterized by dysfunctional endothelium and impaired angiogenesis. Recent studies suggest that the neuronal guidance SLIT/ROBO system regulates tumor angiogenesis. This study investigated if SLIT and ROBO are differentially expressed in healthy term and preeclamptic placentas and if hypoxia regulates SLIT and ROBO expression in placental trophoblast and endothelial cells. Total RNA and protein were extracted from placental tissues of healthy term (n = 5) and preeclamptic (n = 6) pregnancies and used for SLIT/ROBO expression analyses with reverse transcription-polymerase chain reaction (RT-PCR), real-time quantitative-PCR, and immunoblotting. Paraffin-embedded tissues were processed to localize SLIT/ROBO proteins in placental villi by immunohistochemistry. BeWo choriocarcinoma cells and human umbilical vein endothelial cells (HUVEC) were treated with 2% or 10% oxygen or the hypoxia mimetic deferoxamine mesylate (100 μM) to test if hypoxia regulates SLIT/ROBO expression. SLIT2, SLIT3, ROBO1, and ROBO4 mRNA and proteins were detected in the placenta. SLIT2 and ROBO1 proteins localized in the syncytiotrophoblast, and SLIT3, ROBO1, and ROBO4 in capillary endothelium of the placental villi. Levels of ROBO1 and ROBO4 as well as sFLT1 (soluble fms-like tyrosine kinase-1) proteins were significantly greater in preeclamptic placentas compared to normal controls. Hypoxia significantly increased both mRNA and protein levels of SLIT2 in BeWo cells and of SLIT3, ROBO1, and ROBB4 in HUVEC. Thus, trophoblast and endothelial coexpression of SLIT/ROBO suggests an autocrine/paracrine regulatory system for regulating placental function. Differential expression of SLITs and ROBOs in healthy term and preeclamptic placentas and hypoxia regulation of their expressions in placental cells implicate a potential pathophysiological role for this system in preeclampsia.

Indexed as

AdultCase-Control StudiesCell CommunicationFemaleGene Expression ProfilingHumansHuman Umbilical Vein Endothelial CellsHypoxiaMembrane ProteinsPlacentaPre-EclampsiaPregnancyReceptors, ImmunologicReverse Transcriptase Polymerase Chain ReactionRibosomal ProteinsRNA, MessengerMembrane ProteinsReceptors, ImmunologicRibosomal ProteinsRNA, MessengerRPL19 protein, human

Identifiers

PMID22262697
PMCPMC3338657
OpenAlexW2106937329

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.