Evidence map›Paper›PMID 27788214›Full record

ArticlePloS one2016

Image-Based Modeling of Blood Flow and Oxygen Transfer in Feto-Placental Capillaries.

Philip Pearce, Paul Brownbill, Jiří Janáček, Marie Jirkovská, Lucie Kubínová, Igor L Chernyavsky, Oliver E Jensen

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
4.4field-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, 44 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Developments in functional imaging of the placenta.The British journal of radiology · 2023
    Review
  7. Feto-placental Unit: From Development to Function.Advances in experimental medicine and biology · 2023
    Review
  8. Observational
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Microphysiological systems of the placental barrier.Advanced drug delivery reviews · 2020
    Review
  16. Article
  17. Article
  18. Article
  19. Blood flow and transport in the human placenta.Annual review of fluid mechanics · 2019
    Article
  20. 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

7 authors at 4 institutions in 2 countries.

Philip PearceSchool of Mathematics, University of Manchester, Manchester, M13 9PL, United Kingdom.ORCID http://orcid.org/0000-0001-5788-3826
Paul BrownbillMaternal and Fetal Health Research Centre, Institute of Human Development, University of Manchester, Manchester, United Kingdom.
Jiří JanáčekDepartment of Biomathematics, Institute of Physiology, v.v.i., Academy of Sciences of the Czech Republic, Prague, Czech Republic.
Marie JirkovskáInstitute of Histology and Embryology, First Faculty of Medicine, Charles University, Albertov 4, CZ-12801 Prague 2, Czech Republic.
Lucie KubínováDepartment of Biomathematics, Institute of Physiology, v.v.i., Academy of Sciences of the Czech Republic, Prague, Czech Republic.
Igor L ChernyavskySchool of Mathematics, University of Manchester, Manchester, M13 9PL, United Kingdom.
Oliver E JensenSchool of Mathematics, University of Manchester, Manchester, M13 9PL, United Kingdom.
University of Manchester · GBCzech Academy of Sciences · CZCharles University · CZManchester Academic Health Science Centre · GB

Funding

Medical Research Council MR/N011538/1
6 · The paper itself

Abstract

During pregnancy, oxygen diffuses from maternal to fetal blood through villous trees in the placenta. In this paper, we simulate blood flow and oxygen transfer in feto-placental capillaries by converting three-dimensional representations of villous and capillary surfaces, reconstructed from confocal laser scanning microscopy, to finite-element meshes, and calculating values of vascular flow resistance and total oxygen transfer. The relationship between the total oxygen transfer rate and the pressure drop through the capillary is shown to be captured across a wide range of pressure drops by physical scaling laws and an upper bound on the oxygen transfer rate. A regression equation is introduced that can be used to estimate the oxygen transfer in a capillary using the vascular resistance. Two techniques for quantifying the effects of statistical variability, experimental uncertainty and pathological placental structure on the calculated properties are then introduced. First, scaling arguments are used to quantify the sensitivity of the model to uncertainties in the geometry and the parameters. Second, the effects of localized dilations in fetal capillaries are investigated using an idealized axisymmetric model, to quantify the possible effect of pathological placental structure on oxygen transfer. The model predicts how, for a fixed pressure drop through a capillary, oxygen transfer is maximized by an optimal width of the dilation. The results could explain the prevalence of fetal hypoxia in cases of delayed villous maturation, a pathology characterized by a lack of the vasculo-syncytial membranes often seen in conjunction with localized capillary dilations.

Indexed as

Blood CirculationImaging, Three-DimensionalModels, BiologicalCapillariesChorionic VilliDiffusionFemaleFetusHumansOxygenPlacentaPregnancyOxygen

Identifiers

PMID27788214
PMCPMC5082864
OpenAlexW2417890937

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.