Evidence map›Paper›PMID 34373476›Full record

ArticleScientific reports2021

Brain solute transport is more rapid in periarterial than perivenous spaces.

Vegard Vinje, Erik N T P Bakker, Marie E Rognes

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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

17 citing papers in PubMed.

  1. Article
  2. Mapping subarachnoid cerebrospinal fluid circulation in the human brain.bioRxiv : the preprint server for biology · 2026
    Article
  3. Article
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  6. Article
  7. Article
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  11. Article
  12. Article
  13. Cerebrospinal Fluid Flow.Annual review of fluid mechanics · 2023
    Article
  14. Review
  15. Sensitivity analysis on a network model of glymphatic flow.Journal of the Royal Society, Interface · 2022
    Article
  16. Article
  17. 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

3 authors.

Vegard VinjeDepartment of Scientific Computing and Numerical Analysis, Simula Research Laboratory, Martin Linges vei 25, 1364, Fornebu, Norway. vegard@simula.no.
Erik N T P BakkerDepartment of Biomedical Engineering and Physics, Amsterdam University Medical Center, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
Marie E RognesDepartment of Scientific Computing and Numerical Analysis, Simula Research Laboratory, Martin Linges vei 25, 1364, Fornebu, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fluid flow in perivascular spaces is recognized as a key component underlying brain transport and clearance. An important open question is how and to what extent differences in vessel type or geometry affect perivascular fluid flow and transport. Using computational modelling in both idealized and image-based geometries, we study and compare fluid flow and solute transport in pial (surface) periarterial and perivenous spaces. Our findings demonstrate that differences in geometry between arterial and venous pial perivascular spaces (PVSs) lead to higher net CSF flow, more rapid tracer transport and earlier arrival times of injected tracers in periarterial spaces compared to perivenous spaces. These findings can explain the experimentally observed rapid appearance of tracers around arteries, and the delayed appearance around veins without the need of a circulation through the parenchyma, but rather by direct transport along the PVSs.

Identifiers

PMID34373476
PMCPMC8352970

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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.