Cortical waste clearance in normal and restricted sleep with potential runaway tau buildup in Alzheimer's disease.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
12 08 2022
12 08 2022
Historique:
received:
28
08
2021
accepted:
17
06
2022
entrez:
12
8
2022
pubmed:
13
8
2022
medline:
17
8
2022
Statut:
epublish
Résumé
Accumulation of waste in cortical tissue and glymphatic waste clearance via extracellular voids partly drives the sleep-wake cycle and modeling has reproduced much of its dynamics. Here, new modeling incorporates higher void volume and clearance in sleep, multiple waste compounds, and clearance obstruction by waste. This model reproduces normal sleep-wake cycles, sleep deprivation effects, and performance decreases under chronic sleep restriction (CSR). Once fitted to calibration data, it successfully predicts dynamics in further experiments on sleep deprivation, intermittent CSR, and recovery after restricted sleep. The results imply a central role for waste products with lifetimes similar to tau protein. Strong tau buildup is predicted if pathologically enhanced production or impaired clearance occur, with runaway buildup above a critical threshold. Predicted tau accumulation has timescales consistent with the development of Alzheimer's disease. The model unifies a wide sweep of phenomena, clarifying the role of glymphatic clearance and targets for interventions against waste buildup.
Identifiants
pubmed: 35961995
doi: 10.1038/s41598-022-15109-6
pii: 10.1038/s41598-022-15109-6
pmc: PMC9374764
doi:
Substances chimiques
Amyloid beta-Peptides
0
tau Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
13740Informations de copyright
© 2022. The Author(s).
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