Cited by 517Cerebrospinal fluid and hydrocephalusBarrier Structure and Function StudiesLymphatic System and Diseases

The Glymphatic System and Waste Clearance with Brain Aging: A Review

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Benveniste, Helene, Liu, Xiaodan, Koundal, Sunil, Sanggaard, Simon, Lee, Hedok, Wardlaw, Joanna·2019·Gerontology

Abstract

The glymphatic system is a glial-dependent waste clearance pathway in the brain, in place of lymphatic vessels, dedicated to drain away soluble waste proteins and metabolic products. Specifically, the glymphatic network serves as a “front end” for waste clearance, and is connected downstream to an authentic lymphatic network, associated with dura covering the brain as well as cranial nerves and large vessels at the skull exits. The anatomical and functional interconnections between these two networks are not completely understood. Several key physiological processes have been identified that control glymphatic transport function and waste clearance from brain. In this review, we aim to provide an overview and discussion of the concept behind the glymphatic system, current evidence, and controversies, while specifically focusing on the consequences of aging and evidence of its existence in human brain. Discovering novel strategies for optimizing and maintaining efficient brain waste clearance across the lifespan may in the future prove to be important for preventing cognitive decline and sustaining healthy aging.

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  • Aging is associated with a steep fall in glymphatic flow in rodent and human brains.

    “Aging is also associated with a steep fall in glymphatic flow in the brains of both rodents and humans.”

    From Glymphatic failure as a final common pathway to dementia (2020) · cites this paper as [53]

  • CSF inflow of larger tracers is reduced by up to 85% in aged wild-type mice.

    “CSF inflow of larger tracers are reduced by up to 85% in aged wild-type mice”

    From Glymphatic failure as a final common pathway to dementia (2020) · cites this paper as [53]

  • Contrast clearance in human brain tissue is inversely correlated with age in all subjects studied.

    “while contrast clearance in human brain tissue was inversely correlated to age in all subjects studied (50, 52–54).”

    From Glymphatic failure as a final common pathway to dementia (2020) · cites this paper as [53]

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Research works printed but not linked: 2

  1. [36]Iliff JJ Lee H Yu M Feng T Logan J Nedergaard M Benveniste H Brain-wide pathway for waste clearance captured by contrast-enhanced MRI J Clin Invest 2013 123 1299 1309 23434588 PMC3582150
  2. [62]Benveniste H Lee H Ding F Sun Q Al-Bizri E Makaryus R Probst S Nedergaard M Stein EA Lu H Anesthesia with Dexmedetomidine and Low-dose Isoflurane Increases Solute Transport via the Glymphatic Pathway in Rat Brain When Compared with High-dose Isoflurane Anesthesiology 2017 127 976 988 28938276 PMC5685871

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Authors
Benveniste, H., Liu, X., Koundal, S., Sanggaard, S., Lee, H., & Wardlaw, J.
Affiliations
  • Yale University (US)
  • University of Edinburgh (GB)
Venue
Gerontology
Publisher
S. Karger AG
Published
2018-07-11
Volume
65
Issue
2
Pages
106-119
ISSN
  • 0304-324X (ISSN-L)
  • 1423-0003
OpenAlex
W2851624943
Cited by
517
References
84
Citations by year
2026: 64 · 2025: 89 · 2024: 65 · 2023: 88 · 2022: 76 · 2021: 55 · 2020: 54 · 2019: 16 · 2018: 8
FWCI
4.31
Type
journal article
Language
en
Open access
Locations
  • Gerontology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, cc-by)
Funders
  • Fondation Leducq (16CVD05)
  • National Institutes of Health
  • Medical Research Council (MR/J006971/1)
  • National Institute on Aging (RF1AG057705, RF1AG053991, R01AG048769)
  • National Institute of Neurological Disorders and Stroke (R01NS100366)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Cerebrospinal fluid and hydrocephalus
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Oncology › Lymphatic System and Diseases
Keywords
glymphatic system, brain waste clearance, brain aging, cognitive decline, human brain
MeSH terms
Glymphatic System, Aging, Animals, Brain, Humans

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