Evidence map›Paper›PMID 32572120›Full record

ArticleScientific reports2020

Arterial pulsations drive oscillatory flow of CSF but not directional pumping.

Ravi Teja Kedarasetti, Patrick J Drew, Francesco Costanzo

Abstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 1 pooled it
–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

81 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Ultrafast venous and sagittal sinus constrictions in the brain driven by abdominal pressure.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. High frame ratebioRxiv : the preprint server for biology · 2026
    Article
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  19. Glymphatic and meningeal lymphatic dysfunction in Alzheimer's disease: Mechanisms and therapeutic perspectives.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  20. Article

21 more citing papers are in PubMed but not listed here.

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.

Ravi Teja KedarasettiDepartment of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, United States.
Patrick J DrewDepartment of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, United States.
Francesco CostanzoDepartment of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, United States. fxc8@psu.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The brain lacks a traditional lymphatic system for metabolite clearance. The existence of a "glymphatic system" where metabolites are removed from the brain's extracellular space by convective exchange between interstitial fluid (ISF) and cerebrospinal fluid (CSF) along the paravascular spaces (PVS) around cerebral blood vessels has been controversial. While recent work has shown clear evidence of directional flow of CSF in the PVS in anesthetized mice, the driving force for the observed fluid flow remains elusive. The heartbeat-driven peristaltic pulsation of arteries has been proposed as a probable driver of directed CSF flow. In this study, we use rigorous fluid dynamic simulations to provide a physical interpretation for peristaltic pumping of fluids. Our simulations match the experimental results and show that arterial pulsations only drive oscillatory motion of CSF in the PVS. The observed directional CSF flow can be explained by naturally occurring and/or experimenter-generated pressure differences.

Indexed as

AnimalsArteriesBrainCerebrospinal FluidCerebrospinal Fluid PressureComputational BiologyExtracellular FluidExtracellular MatrixGlymphatic SystemHeart RateHumansHydrodynamicsMiceModels, Statistical

Identifiers

PMID32572120
PMCPMC7308311

What OpenQuestion holds

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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.