The DOI matches its Crossref record; 41 of the 42 references it cites were found in a registry or an index.
Impairment of paravascular clearance pathways in the aging brain
Open accessAbstract
Objective: In the brain, protein waste removal is partly performed by paravascular pathways that facilitate convective exchange of water and soluble contents between cerebrospinal fluid (CSF) and interstitial fluid (ISF). Several lines of evidence suggest that bulk flow drainage via the glymphatic system is driven by cerebrovascular pulsation, and is dependent on astroglial water channels that line paravascular CSF pathways. The objective of this study was to evaluate whether the efficiency of CSF–ISF exchange and interstitial solute clearance is impaired in the aging brain. Methods: CSF–ISF exchange was evaluated by in vivo and ex vivo fluorescence microscopy and interstitial solute clearance was evaluated by radiotracer clearance assays in young (2–3 months), middle‐aged (10–12 months), and old (18–20 months) wild‐type mice. The relationship between age‐related changes in the expression of the astrocytic water channel aquaporin‐4 (AQP4) and changes in glymphatic pathway function was evaluated by immunofluorescence. Results: Advancing age was associated with a dramatic decline in the efficiency of exchange between the subarachnoid CSF and the brain parenchyma. Relative to the young, clearance of intraparenchymally injected amyloid‐β was impaired by 40% in the old mice. A 27% reduction in the vessel wall pulsatility of intracortical arterioles and widespread loss of perivascular AQP4 polarization along the penetrating arteries accompanied the decline in CSF–ISF exchange. Interpretation: We propose that impaired glymphatic clearance contributes to cognitive decline among the elderly and may represent a novel therapeutic target for the treatment of neurodegenerative diseases associated with accumulation of misfolded protein aggregates. Ann Neurol 2014;76:845–861
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“In AD, reactive astrogliosis is upregulated corresponds to the severity of astroglial activation and high levels of proinflammatory cytokines and the hypertrophic processes make aberrant contacts with nearby cerebral vessels and neurons, leading to neurovascular uncoupling.[ 42 ]”
From Multifunctional Nanostructure RAP‐RL Rescues Alzheimer's Cognitive Deficits through Remodeling the Neurovascular Unit (2021) · cites this paper as [42]
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In the citing paper
“Impaired glymphatic function has been suggested to be instrumental in a range of brain diseases; this has been illustrated most in Alzheimer's dementia (7, 19, 20) but has also been shown to be relevant in posttraumatic encephalopathy (21), ageing (22), sleep (23, 24), depression (20), and exercise (25).”
From Brain-wide glymphatic enhancement and clearance in humans assessed with MRI. (2018) · cites this paper as [22]
The cited source says what the claim attributes to it.
In the citing paper
“and paravascular clearance has been shown to be impaired with ageing (22).”
From Brain-wide glymphatic enhancement and clearance in humans assessed with MRI. (2018) · cites this paper as [22]
In the citing paper
“Yet the glymphatic system degrades with age, suggesting a causal relationship between sleep disturbance and symptomatic progression in the neurodegenerative dementias.”
From Glymphatic failure as a final common pathway to dementia (2020) · cites this paper as [52]
In the citing paper
“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 [52]
In the citing paper
“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 [52]
In the citing paper
“The decrease in glymphatic flow in old mice is in part mediated by mislocation of AQP4 water channels away from the vascular wall (52) and possible by atrophy of meningeal lymphatic vessel (42).”
From Glymphatic failure as a final common pathway to dementia (2020) · cites this paper as [52]
In the citing paper
“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 [52]
In the citing paper
“As individuals age, there is a decline in the efficiency of these transport mechanisms in eliminating waste products such as Aβ.156,157”
From Antiageing strategy for neurodegenerative diseases: from mechanisms to clinical advances (2025) · cites this paper as [157]
In the citing paper
“both the brain glymphatic and meningeal lymphatic systems deteriorate with age”
From Living on the Edge of the CNS: Meninges Cell Diversity in Health and Disease (2021) · cites this paper as Kress et al., 2014
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Citations
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The Neurovascular Unit Coming of Age: A Journey through Neurovascular Coupling in Health and Disease
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InfluentialSelf-citationClearance systems in the brain—implications for Alzheimer disease
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Self-citation
Metadata
- Authors
- Kress, B. T., Iliff, J. J., Xia, M., Wang, M., Wei, H. S., Zeppenfeld, D., Xie, L., Kang, H., Xu, Q., Liew, J. A., Plog, B. A., Ding, F., Deane, R., & Nedergaard, M.
- Affiliations
- University of Rochester Medicine (US)
- Oregon Health & Science University (US)
- Corresponding author
- Iliff, Jeffrey J.
- ORCID
- Venue
- Annals of Neurology
- Publisher
- Wiley
- Published
- 2014-09-26
- Volume
- 76
- Issue
- 6
- Pages
- 845-861
- ISSN
- 0364-5134 (ISSN-L)
- 1531-8249
- PMC
- PMC4245362
- OpenAlex
- W2100314515
- Cited by
- 1,521
- References
- 42
- Citations by year
- 2026: 182 · 2025: 186 · 2024: 202 · 2023: 167 · 2022: 172 · 2021: 126 · 2020: 126 · 2019: 98 · 2018: 89 · 2017: 70 · 2016: 54 · 2015: 47 · 2014: 1
- FWCI
- 26.22
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Annals of Neurology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- American Heart Association (12SDG11820014)
- National Institutes of Health (F32 NS073373)
- Oregon Partnership for Alzheimer's Research
- Topics
- Health Sciences › Medicine › Clinical Neurology › Cerebrospinal fluid and hydrocephalus
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion Transport and Channel Regulation
- Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
- Keywords
- glymphatic system, brain aging, aquaporin-4, astrocytes, amyloid-beta clearance, cognitive decline, neurodegenerative diseases
- MeSH terms
- Aging, Animals, Brain, Cerebrovascular Circulation, Female, Male, Metabolic Clearance Rate, Mice, Inbred C57BL, Neuroglia, Microscopy, Fluorescence, Multiphoton, Mice, Aquaporin 4
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