Cited by 2,075Cerebrospinal fluid and hydrocephalusTraumatic Brain Injury and Neurovascular DisturbancesBarrier Structure and Function Studies

The glymphatic system: a beginner's guide

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Jessen, Nadia Aalling, Munk, Anne Sofie Finmann, Lundgaard, Iben, Nedergaard, Maiken·2015·Neurochemical Research

Abstract

The glymphatic system is a recently discovered macroscopic waste clearance system that utilizes a unique system of perivascular tunnels, formed by astroglial cells, to promote efficient elimination of soluble proteins and metabolites from the central nervous system. Besides waste elimination, the glymphatic system also facilitates brain-wide distribution of several compounds, including glucose, lipids, amino acids, growth factors, and neuromodulators. Intriguingly, the glymphatic system function mainly during sleep and is largely disengaged during wakefulness. The biological need for sleep across all species may therefore reflect that the brain must enter a state of activity that enables elimination of potentially neurotoxic waste products, including β-amyloid. Since the concept of the glymphatic system is relatively new, we will here review its basic structural elements, organization, regulation, and functions. We will also discuss recent studies indicating that glymphatic function is suppressed in various diseases and that failure of glymphatic function in turn might contribute to pathology in neurodegenerative disorders, traumatic brain injury and stroke.

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  • Other restorative processes linked to SWS include physical removal of metabolic wastes via the brain's glymphatic system.

    “as well as physical removal of metabolic wastes via the brain's glymphatic system (Jessen et al., 2015).”

    From Physiological feelings (2019) · cites this paper as Jessen et al., 2015

  • Studies using injection of fluorescent tracers into the cisterna magna of mice have suggested that paravascular circulation occurs via cerebrospinal fluid convective flow through the extracellular spaces from the para-arterial to the paravenous spaces, which is regulated by AQP4 water channels on astrocytes, and therefore the system was renamed as the glymphatic system.

    “For example, studies using injection of fluorescent tracers into cisterna magna of mice have suggested that paravascular circulation occurs via CSF convective flow through the ECS from the para-arterial to the paravenous spaces, which is regulated by AQP4 water channels on astrocytes, and therefore the system was renamed as the 'glymphatic' system (276, 293).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [293]

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  1. [51]Bradbury M Cserr H 1985 Drainage of cerebral interstitial fluid and of cerebrospinal fluid into lymphatics Johnston M Exp Biol Lymphat Circ Elsevier New York, NY 355 94

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Authors
Jessen, N. A., Munk, A. S. F., Lundgaard, I., & Nedergaard, M.
Affiliations
University of Rochester Medicine (US)
Venue
Neurochemical Research
Published
2015-05-07
Volume
40
Issue
12
Pages
2583-2599
ISSN
  • 0364-3190 (ISSN-L)
  • 1573-6903
OpenAlex
W211905087
Cited by
2,075
References
141
Citations by year
2026: 230 · 2025: 300 · 2024: 266 · 2023: 235 · 2022: 217 · 2021: 223 · 2020: 168 · 2019: 137 · 2018: 127 · 2017: 102 · 2016: 51 · 2015: 17
FWCI
45.97
Type
journal article
Language
en
Open access
Locations
  • Neurochemical Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • Israel Science Foundation
  • Novo Nordisk Fonden (NNF13OC0004258)
  • National Institutes of Health
  • National Institute on Aging (R01AG048769)
  • National Institute of Neurological Disorders and Stroke (R01NS078304, R01NS078167, R01NS075177, NS075177, NS078304))
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R21HD080573)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Cerebrospinal fluid and hydrocephalus
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
Keywords
glymphatic system, perivascular spaces, astrocytes, brain waste clearance, amyloid-beta, neurodegenerative diseases, traumatic brain injury, stroke, glymphatic dysfunction
MeSH terms
Aging, Animals, Astrocytes, Brain Injuries, Cerebrospinal Fluid, Humans, Lymphatic System

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