Evidence map›Paper›PMID 19038858›Full record

ArticleBiology of reproduction2009

Effect of leptin on mouse trophoblast giant cells.

L C Schulz, E P Widmaier, J Qiu, R M Roberts

Open access · bronzeAbstract read
In one paragraph

Article in Biology of reproduction, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 37% 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

13 citing papers in PubMed, 28 citations in OpenAlex.

  1. Emerging Role of Leptin in Vascular and Placental Dysfunction in Preeclampsia.Arteriosclerosis, thrombosis, and vascular biology · 2025
    Review
  2. Review
  3. Article
  4. Article
  5. Review
  6. Maternal DNA Methylation During Pregnancy: a Review.Reproductive sciences (Thousand Oaks, Calif.) · 2021
    Review
  7. Article
  8. Article
  9. Placental development in a mouse model of spinal muscular atrophy.Biochemical and biophysical research communications · 2016
    Article
  10. Article
  11. Article
  12. Article
  13. Review
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

4 authors at 2 institutions in 2 countries.

L C SchulzDivision of Animal Sciences, University of Missouri, Columbia, Missouri 65211, USA. schulzl@missouri.edu
E P Widmaier
J Qiu
R M Roberts
University of Missouri · USBoston University · US

Funding

INTERACTION BETWEEN BLASTOCYST AND UTERINE ENDOMETRIUMR01HD021896 · NICHD · UNIVERSITY OF MISSOURI-COLUMBIA · PI ROBERTS, R. MICHAEL · 1986 to 2010
$2.8M
The Role of Leptin in Placental DevelopmentR00HD055231 · NICHD · UNIVERSITY OF MISSOURI-COLUMBIA · PI SCHULZ, LAURA CLAMON · 2010 to 2011
$743k
The Role of Leptin in Placental DevelopmentK99HD055231 · NICHD · UNIVERSITY OF MISSOURI-COLUMBIA · PI SCHULZ, LAURA CLAMON · 2008 to 2009
$180k
Effect of Leptin on Trophoblast InvasivenessF32HD045116 · NICHD · UNIVERSITY OF MISSOURI-COLUMBIA · PI SCHULZ, LAURA CLAMON · 2004 to 2006
$141k
INTERACTION BETWEEN BLASTOCYST AND UTERINE ENDOMETRIUMR37HD021896 · NICHD · UNIVERSITY OF MISSOURI-COLUMBIA · PI ROBERTS, ROBERT MICHAEL · 1990 to 1999
–
NICHD NIH HHS 1F32HD45116NICHD NIH HHS 1K99HD055231NICHD NIH HHS F32 HD045116NICHD NIH HHS HD21896NICHD NIH HHS K99 HD055231NICHD NIH HHS R00 HD055231NICHD NIH HHS R01 HD021896NICHD NIH HHS R37 HD021896
6 · The paper itself

Abstract

Leptin plays a role in both energy homeostasis and reproduction, and it is required in early pregnancy. It stimulates metalloproteinase activity in cultured human trophoblasts and invasiveness of cultured mouse trophoblasts. Our goal has been to examine mechanisms that underpin the ability of leptin to promote trophoblast invasiveness in primary cultures of mouse trophoblasts. Leptin stimulated the phosphorylation of MEK (MAP2K1) but not signal transducer and activator of transcription 3 (STAT3) in the cultures, increased the concentration of the suppressor of cytokine signaling 3 (SOCS3) protein, and upregulated metalloproteinase activity. Microarray analysis revealed that leptin stimulated select genes with roles in cell motility, including Stmn, a gene linked to invasiveness in other cell types. There was also an increase in activity of several genes associated with MAPK and RhoGTPase signaling. In addition, leptin muted expression of genes correlated with terminal differentiation of trophoblast giant cells, including ones associated with the TGFbeta signaling pathway and endoreduplication of DNA, and upregulated selected prolactin-related family members. Feulgen staining of leptin-treated cells revealed a loss of cells with low ploidy. The data suggest that leptin accelerates disappearance of non-giant cells while inhibiting terminal differentiation of committed giant cells, possibly by maintaining cells in an intermediate stage of differentiation.

Indexed as

AnimalsCell DifferentiationCells, CulturedExtracellular Signal-Regulated MAP KinasesFemaleLeptinMAP Kinase Kinase 1Matrix Metalloproteinase 2Matrix Metalloproteinase 9MiceOligonucleotide Array Sequence Analysisrho GTP-Binding ProteinsSignal TransductionSTAT3 Transcription FactorStathminSuppressor of Cytokine Signaling 3 ProteinExtracellular Signal-Regulated MAP KinasesLeptinMap2k1 protein, mouseMAP Kinase Kinase 1Matrix Metalloproteinase 2Matrix Metalloproteinase 9rho GTP-Binding ProteinsSocs3 protein, mouseStat3 protein, mouseSTAT3 Transcription FactorStathminStmn1 protein, mouseSuppressor of Cytokine Signaling 3 ProteinSuppressor of Cytokine Signaling ProteinsTransforming Growth Factor beta

Identifiers

PMID19038858
PMCPMC2805391
OpenAlexW2100619959

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.