TY  - JOUR
TI  - Sleep deprivation and cerebrospinal fluid biomarkers for Alzheimer's disease
Y1  - 2018/05/01/
AV  - public
EP  - 8
N2  - Study Objectives:
To investigate the cumulative effect of five consecutive nights of partial sleep deprivation (PSD) on a panel of cerebrospinal fluid (CSF) biomarkers in healthy adults.

Methods:
A randomized, cross-over study conducted at the University of Gothenburg. The participants (N = 13) were healthy adults (20?40 years of age) with a normal sleeping pattern. The participants underwent a baseline sleep period consisting of five nights with 8 hr spent in bed. A subsequent period with PSD consisted of five nights of maximum 4 hr of sleep per night. Four participants were also subjected to a prolonged period of PSD consisting of eight nights with 4 hr of sleep per night. Sleep was monitored by means of observation, actigraphy, and continuous polysomnographic recordings. CSF samples were collected by routine lumbar puncture after each period. CSF biomarkers included the 38, 40, and 42 amino acid?long A? isoforms, total-?, phospho-?, orexin, monoamine metabolites (3-methoxy-4-hydroxyphenylglycol, homovanillinic acid, and 5-hydroxyindoleacetic acid), neuron-derived biomarkers (neurofilament light, neuron-specific enolase, and fatty acid?binding protein), and astro- and microglia-derived biomarkers (glial fibrillary acidic protein, S-100B, and YKL-40).

Results:
PSD was associated with a 27 per cent increase in CSF orexin concentrations (p = 0.001). No PSD-related changes in CSF biomarkers for amyloid build-up in the brain, Alzheimer?s disease (AD)-type neurodegeneration, or astroglial activation were observed. PSD led to a shortening of time spent in all sleep stages except slow-wave sleep (SWS).

Conclusion:
Five to eight consecutive nights of PSD, with preserved SWS, increased CSF orexin but had no effect on CSF biomarkers for amyloid deposition, neuronal injury, and astroglial activation.
ID  - discovery10063659
PB  - OXFORD UNIV PRESS INC
KW  - Alzheimer?s disease
KW  -  amyloid ?
KW  -  neuron-specific enolase
KW  -  orexin
KW  -  monoamine
KW  -  S100 calcium-binding protein B
KW  -  sleep deprivation
KW  -  sleep loss
KW  -  sleep
KW  -  cerebrospinal fluid
VL  - 41
IS  - 5
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
UR  - https://doi.org/10.1093/sleep/zsy025
SN  - 1550-9109
JF  - Sleep
A1  - Olsson, M
A1  - Arlig, J
A1  - Hedner, J
A1  - Blennow, K
A1  - Zetterberg, H
ER  -