Evidence map›Paper›PMID 25465704›Full record

ArticlePlacenta2015

Collagen type IV at the fetal-maternal interface.

C M Oefner, A Sharkey, L Gardner, H Critchley, M Oyen, A Moffett

Open access · hybridAbstract read
In one paragraph

Article in Placenta, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

52 citing papers in PubMed, 107 citations in OpenAlex.

  1. Article
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  14. Decidual stromal cells drive CD16Frontiers in immunology · 2025
    Article
  15. Article
  16. Article
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  19. Material properties of nonpregnant and pregnant human uterine layers.Journal of the mechanical behavior of biomedical materials · 2024
    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

6 authors at 2 institutions in 1 country.

C M OefnerDepartment of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, United Kingdom. Electronic address: cmo35@cam.ac.uk.
A SharkeyDepartment of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, United Kingdom.
L GardnerDepartment of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, United Kingdom.
H CritchleyMRC Centre for Reproductive Health, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, United Kingdom.
M OyenDepartment of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom.
A MoffettDepartment of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, United Kingdom.
University of Cambridge · GBMRC Centre for Reproductive Health · GB

Funding

British Heart Foundation PG/09/077/27964Wellcome TrustWellcome Trust 085992/Z/08/ZWellcome Trust 090108/Z/09/Z
6 · The paper itself

Abstract

introductionExtracellular matrix proteins play a crucial role in influencing the invasion of trophoblast cells. However the role of collagens and collagen type IV (col-IV) in particular at the implantation site is not clear.

methodsImmunohistochemistry was used to determine the distribution of collagen types I, III, IV and VI in endometrium and decidua during the menstrual cycle and the first trimester of pregnancy. Expression of col-IV alpha chains during the reproductive cycle was determined by qPCR and protein localisation by immunohistochemistry. The structure of col-IV in placenta was examined using transmission electron microscopy. Finally, the expression of col-IV alpha chain NC1 domains and collagen receptors was localised by immunohistochemistry.

resultsCol-IV alpha chains were selectively up-regulated during the menstrual cycle and decidualisation. Primary extravillous trophoblast cells express collagen receptors and secrete col-IV in vitro and in vivo, resulting in the increased levels found in decidua basalis compared to decidua parietalis. A novel expression pattern of col-IV in the mesenchyme of placental villi, as a three-dimensional network, was found. NC1 domains of col-IV alpha chains are known to regulate tumour cell migration and the selective expression of these domains in decidua basalis compared to decidua parietalis was determined. DISCUSSION: Col-IV is expressed as novel forms in the placenta. These findings suggest that col-IV not only represents a structural protein providing tissue integrity but also influences the invasive behaviour of trophoblast cells at the implantation site.

Indexed as

Chorionic VilliCollagen Type IVDeciduaEmbryo ImplantationFemaleHumansPlacentaPregnancyPregnancy Trimester, FirstTrophoblastsUp-RegulationCollagen Type IVAlpha(IV) NC1 domainsExtracellular matrixPlacental bedReproductive cycleTrophoblast

Identifiers

PMID25465704
PMCPMC4302218
OpenAlexW2019879180

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.