Evidence map›Paper›PMID 25920377›Full record

ArticleThe Journal of physiology2015

Dysregulated flow-mediated vasodilatation in the human placenta in fetal growth restriction.

Sarah Jones, Helen Bischof, Ingrid Lang, Gernot Desoye, Sue L Greenwood, Edward D Johnstone, Mark Wareing, Colin P Sibley, Paul Brownbill

Open access · hybridAbstract read
In one paragraph

Article in The Journal of physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.8field-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, 60 citations in OpenAlex.

  1. Article
  2. Article
  3. Cannabis Use during Pregnancy: An Update.Medicina (Kaunas, Lithuania) · 2024
    Review
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  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Vascular changes in fetal growth restriction: clinical relevance and future therapeutics.Journal of perinatology : official journal of the California Perinatal Association · 2019
    Review
  15. Blood flow and transport in the human placenta.Annual review of fluid mechanics · 2019
    Article
  16. Article
  17. Article
  18. Treating the dysfunctional placenta.The Journal of endocrinology · 2017
    Review
  19. Article
  20. 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

9 authors at 5 institutions in 2 countries.

Sarah JonesMaternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, St. Mary's Hospital, Oxford Road, Manchester, M13 9WL, UK.
Helen BischofMaternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, St. Mary's Hospital, Oxford Road, Manchester, M13 9WL, UK.
Ingrid LangInstitute of Cell Biology, Histology and Embryology, Medical University of Graz, Graz, Austria.
Gernot DesoyeDepartment of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria.
Sue L GreenwoodMaternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, St. Mary's Hospital, Oxford Road, Manchester, M13 9WL, UK.
Edward D JohnstoneMaternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, St. Mary's Hospital, Oxford Road, Manchester, M13 9WL, UK.
Mark WareingMaternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, St. Mary's Hospital, Oxford Road, Manchester, M13 9WL, UK.
Colin P SibleyMaternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, St. Mary's Hospital, Oxford Road, Manchester, M13 9WL, UK.
Paul BrownbillMaternal and Fetal Health Research Centre, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, St. Mary's Hospital, Oxford Road, Manchester, M13 9WL, UK.
St Mary's Hospital · GBManchester Academic Health Science Centre · GBMedical University of Graz · ATSt Mary's Hospital · GBUniversity of Manchester · GB

Funding

British Heart Foundation PG/11/11/28725
6 · The paper itself

Abstract

Increased vascular resistance and reduced fetoplacental blood flow are putative aetiologies in the pathogenesis of fetal growth restriction (FGR); however, the regulating sites and mechanisms remain unclear. We hypothesised that placental vessels dictate fetoplacental resistance and in FGR exhibit endothelial dysfunction and reduced flow-mediated vasodilatation (FMVD). Resistance was measured in normal pregnancies (n = 10) and FGR (n = 10) both in vivo by umbilical artery Doppler velocimetry and ex vivo by dual placental perfusion. Ex vivo FMVD is the reduction in fetal-side inflow hydrostatic pressure (FIHP) following increased flow rate. Results demonstrated a significant correlation between vascular resistance measured in vivo and ex vivo in normal pregnancy, but not in FGR. In perfused FGR placentas, vascular resistance was significantly elevated compared to normal placentas (58 ± 7.7 mmHg and 36.8 ± 4.5 mmHg, respectively; 8 ml min(-1) ; means ± SEM; P < 0.0001) and FMVD was severely reduced (3.9 ± 1.3% and 9.1 ± 1.2%, respectively). In normal pregnancies only, the highest level of ex vivo FMVD was associated with the lowest in vivo resistance. Inhibition of NO synthesis during perfusion (100 μm l-NNA) moderately elevated FIHP in the normal group, but substantially in the FGR group. Human placenta artery endothelial cells from FGR groups exhibited increased shear stress-induced NO generation, iNOS expression and eNOS expression compared with normal groups. In conclusion, fetoplacental resistance is determined by placental vessels, and is increased in FGR. The latter also exhibit reduced FMVD, but with a partial compensatory increased NO generation capacity. The data support our hypothesis, which highlights the importance of FMVD regulation in normal and dysfunctional placentation.

Indexed as

Placental CirculationVasodilationAdultBiological FactorsFemaleFetal Growth RetardationFibroblast Growth Factor 2HumansMaleNitric Oxide Synthase Type IIPregnancyBiological Factorsendothelium-dependent hyperpolarization factorFibroblast Growth Factor 2Nitric Oxide Synthase Type II

Identifiers

PMID25920377
PMCPMC4532528
OpenAlexW2100842913

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.