Evidence map›Paper›PMID 26887431›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2016

Development of ovine chorionic somatomammotropin hormone-deficient pregnancies.

Callie M Baker, Lindsey N Goetzmann, Jeremy D Cantlon, Kimberly M Jeckel, Quinton A Winger, Russell V Anthony

Open access · bronzeAbstract read
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
4.6field-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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
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  3. Review
  4. Article
  5. Article
  6. Fetal Hypoglycemia Induced by PlacentalInternational journal of molecular sciences · 2024
    Article
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  8. Review
  9. Article
  10. Impact of Placental SLC2A3 Deficiency during the First-Half of Gestation.International journal of molecular sciences · 2022
    Article
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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

6 authors at 1 institution in 1 country.

Callie M BakerAnimal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado.
Lindsey N GoetzmannAnimal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado.
Jeremy D CantlonAnimal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado.
Kimberly M JeckelAnimal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado.
Quinton A WingerAnimal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado.
Russell V AnthonyAnimal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado Russ.Anthony@ColoState.edu.
Colorado State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Intrauterine growth restriction (IUGR) is a leading cause of neonatal mortality and morbidity. Chorionic somatomammotropin hormone (CSH), a placenta-specific secretory product found at high concentrations in maternal and fetal circulation throughout gestation, is significantly reduced in human and sheep IUGR pregnancies. The objective of this study was to knock down ovine CSH (oCSH) expression in vivo using lentiviral-mediated short-hairpin RNA to test the hypothesis that oCSH deficiency would result in IUGR of near-term fetal lambs. Three different lentiviral oCSH-targeting constructs were used and compared with pregnancies (n = 8) generated with a scrambled control (SC) lentiviral construct. Pregnancies were harvested at 135 days of gestation. The most effective targeting sequence, "target 6" (tg6; n = 8), yielded pregnancies with significant reductions (P ≤ 0.05) in oCSH mRNA (50%) and protein (38%) concentrations, as well as significant reductions (P ≤ 0.05) in placental (52%) and fetal (32%) weights compared with the SC pregnancies. Fetal liver weights were reduced 41% (P ≤ 0.05), yet fetal liver insulin-like growth factor-I (oIGF1) and -II mRNA concentrations were reduced (P ≤ 0.05) 82 and 71%, respectively, and umbilical artery oIGF1 concentrations were reduced 62% (P ≤ 0.05) in tg6 pregnancies. Additionally, fetal liver oIGF-binding protein (oIGFBP) 2 and oIGFBP3 mRNA concentrations were reduced (P ≤ 0.05), whereas fetal liver oIGFBP1 mRNA concentration was not impacted nor was maternal liver oIGF and oIGFBP mRNA concentrations or uterine artery oIGF1 concentrations (P ≥ 0.10). Based on our results, it appears that oCSH deficiency does result in IUGR, by impacting placental development as well as fetal liver development and function.

Indexed as

Pregnancy, AnimalAnimalsBlastocystFemaleFetal DevelopmentFetal Growth RetardationGene Expression Regulation, DevelopmentalGene Knockdown TechniquesGene SilencingLentivirusPlacentaPlacental LactogenPregnancyRNA, MessengerRNA, Small InterferingSheepPlacental LactogenRNA, MessengerRNA, Small InterferingSomatomedinsin vivo deficiencylentivirusnear termshort-hairpin ribonucleic acid

Identifiers

PMID26887431
PMCPMC5000775
OpenAlexW2344890292

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.