Evidence map›Paper›PMID 25729345›Full record

ArticleFrontiers in neuroscience2015

The inner CSF-brain barrier: developmentally controlled access to the brain via intercellular junctions.

Sophie Whish, Katarzyna M Dziegielewska, Kjeld Møllgård, Natassya M Noor, Shane A Liddelow, Mark D Habgood, Samantha J Richardson, Norman R Saunders

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 2 pooled it
5.6field-weighted citation impact, top 4% 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

59 citing papers in PubMed, 2 syntheses or guidelines pooled it, 114 citations in OpenAlex.

  1. Pooled it
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  17. The anatomic basis of leptomeningeal metastasis.The Journal of experimental medicine · 2024
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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

8 authors at 3 institutions in 3 countries.

Sophie WhishDepartment of Pharmacology and Therapeutics, University of Melbourne Parkville, VIC, Australia.
Katarzyna M DziegielewskaDepartment of Pharmacology and Therapeutics, University of Melbourne Parkville, VIC, Australia.
Kjeld MøllgårdDepartment of Cellular and Molecular Medicine, Institute of Cellular and Molecular Medicine, University of Copenhagen Copenhagen, Denmark.
Natassya M NoorDepartment of Pharmacology and Therapeutics, University of Melbourne Parkville, VIC, Australia.
Shane A LiddelowDepartment of Pharmacology and Therapeutics, University of Melbourne Parkville, VIC, Australia ; Department of Neurobiology, Stanford University Palo Alto, CA, USA.
Mark D HabgoodDepartment of Pharmacology and Therapeutics, University of Melbourne Parkville, VIC, Australia.
Samantha J RichardsonSchool of Medical Sciences, RMIT University Bundoora, VIC, Australia.
Norman R SaundersDepartment of Pharmacology and Therapeutics, University of Melbourne Parkville, VIC, Australia.
University of Melbourne · AURMIT University · AUUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In the adult the interface between the cerebrospinal fluid and the brain is lined by the ependymal cells, which are joined by gap junctions. These intercellular connections do not provide a diffusional restrain between the two compartments. However, during development this interface, initially consisting of neuroepithelial cells and later radial glial cells, is characterized by "strap" junctions, which limit the exchange of different sized molecules between cerebrospinal fluid and the brain parenchyma. Here we provide a systematic study of permeability properties of this inner cerebrospinal fluid-brain barrier during mouse development from embryonic day, E17 until adult. Results show that at fetal stages exchange across this barrier is restricted to the smallest molecules (286Da) and the diffusional restraint is progressively removed as the brain develops. By postnatal day P20, molecules the size of plasma proteins (70 kDa) diffuse freely. Transcriptomic analysis of junctional proteins present in the cerebrospinal fluid-brain interface showed expression of adherens junctional proteins, actins, cadherins and catenins changing in a development manner consistent with the observed changes in the permeability studies. Gap junction proteins were only identified in the adult as was claudin-11. Immunohistochemistry was used to localize at the cellular level some of the adherens junctional proteins of genes identified from transcriptomic analysis. N-cadherin, β - and α-catenin immunoreactivity was detected outlining the inner CSF-brain interface from E16; most of these markers were not present in the adult ependyma. Claudin-5 was present in the apical-most part of radial glial cells and in endothelial cells in embryos, but only in endothelial cells including plexus endothelial cells in adults. Claudin-11 was only immunopositive in the adult, consistent with results obtained from transcriptomic analysis. These results provide information about physiological, molecular and morphological-related permeability changes occurring at the inner cerebrospinal fluid-brain barrier during brain development.

Indexed as

barriersbrain developmentcerebrospinal fluidpermeabilityventricular zone

Identifiers

PMID25729345
PMCPMC4325900
OpenAlexW1964938632

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.