Evidence map›Paper›PMID 31391474›Full record

ArticleScientific reports2019

MRI of Whole Rat Brain Perivascular Network Reveals Role for Ventricles in Brain Waste Clearance.

Kulam Najmudeen Magdoom, Alec Brown, Julian Rey, Thomas H Mareci, Michael A King, Malisa Sarntinoranont

Abstract read
In one paragraph

Article in Scientific reports, 2019. 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
–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

23 citing papers in PubMed.

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  14. Cerebrospinal Fluid Flow.Annual review of fluid mechanics · 2023
    Article
  15. High-resolution 3D demonstration of regional heterogeneity in the glymphatic system.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  16. Review
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  18. Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  19. 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.

Kulam Najmudeen MagdoomDepartment of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA.
Alec BrownDepartment of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL, USA.
Julian ReyDepartment of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA.
Thomas H MareciDepartment of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL, USA.ORCID http://orcid.org/0000-0003-4700-2364
Michael A KingDepartment of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, USA.
Malisa SarntinoranontDepartment of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA. msarnt@ufl.edu.

Funding

Nikon A1R two-photon microscope for a shared resourceS10OD020026 · OD · UNIVERSITY OF FLORIDA · PI KHOSHBOUEI, HABIBEH · 2015 to 2015
$600k
NIH HHS S10 OD020026
6 · The paper itself

Abstract

Investigating the mechanisms by which metabolic wastes are cleared from nervous tissue is important for understanding natural function and the pathophysiology of several neurological disorders including Alzheimer's disease. Recent evidence suggests clearance may be the function of annular spaces around cerebral blood vessels, called perivascular spaces (PVS), through which cerebrospinal fluid (CSF) is transported from the subarachnoid space into brain parenchyma to exchange with interstitial fluid (also known as the glymphatic system). In this work, an MRI-based methodology was developed to reconstruct the PVS network in whole rat brain to better elucidate both PVS uptake and clearance pathways. MR visible tracer (Gd-albumin) was infused in vivo into the CSF-filled lateral ventricle followed by ex vivo high-resolution MR imaging at 17.6 T with an image voxel volume two orders of magnitude smaller than previously reported. Imaged tracer distribution patterns were reconstructed to obtain a more complete brain PVS network. Several PVS connections were repeatedly highlighted across different animals, and new PVS connections between ventricles and different parts of the brain parenchyma were revealed suggesting a possible role for the ventricles as a source or sink for solutes in the brain. In the future, this methodology may be applied to understand changes in the PVS network with disease.

Indexed as

AlbuminsAlzheimer DiseaseAnimalsCerebral VentriclesCerebrospinal FluidContrast MediaEvans BlueFeasibility StudiesGadolinium DTPAGlymphatic SystemInfusions, IntraventricularMagnetic Resonance ImagingMaleModels, AnimalRatsSubarachnoid Spacealbumin-(gadolinium-DTPA)AlbuminsContrast MediaEvans BlueGadolinium DTPA

Identifiers

PMID31391474
PMCPMC6685961

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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.