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Effects of Sleep Deprivation on Cerebrospinal Fluid (CSF) Amyloid-beta (Aβ) Dynamics (AWAKE)

This study has been completed.
Information provided by (Responsible Party):
Dr. J. Claassen, University Medical Center Nijmegen Identifier:
First received: September 1, 2010
Last updated: May 9, 2014
Last verified: May 2014

Introduction: Alzheimer's disease (AD) is characterized by neurodegeneration of the brain in the form of neurofibrillary tangles and plaques containing the amyloid-beta protein (Abeta). Recent animal studies have shown that extended wakefulness is associated with increased production of these Abeta proteins and that sleep leads to a marked fall in their production.

Aim: The investigators aim to distinguish a similar effect of sleep disturbance on cerebrospinal fluid (CSF) Abeta levels in humans, which may point out sleep disturbance as an important factor in AD development.

Methods: a study in 26 healthy male volunteers, measuring CSF Abeta levels during a sleep deprivation night and before and after a control night with unrestricted sleep.

Expected results: The investigators expect sleep deprivation to lead to an increase in CSF Abeta levels, as compared to the levels in the control night.

Condition Intervention
Alzheimer Disease Behavioral: Sleep deprivation

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Basic Science
Official Title: Losing Sleep Over Alzheimer's Disease? Effects of Sleep Deprivation on Cerebrospinal Fluid Amyloid-beta Dynamics

Resource links provided by NLM:

Further study details as provided by Dr. J. Claassen, University Medical Center Nijmegen:

Primary Outcome Measures:
  • Amyloid beta [ Time Frame: 6 timepoints during one night of sleep deprivation ]
    Subjects will undergo one night of sleep deprivation before, during and after which a total of 9 CSF samples (6ml each) will be drawn through a spinal catheter. From these CSF samples Amyloid beta will be analysed.

Enrollment: 26
Study Start Date: March 2011
Study Completion Date: September 2013
Primary Completion Date: September 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Sleep deprivation

13 subjects will undergo full sleep deprivation

these subjects are blind to allocation ntil they enter the study center

Behavioral: Sleep deprivation
subjects will undergo one night of full sleep deprivation
No Intervention: Control night
control night of unrestricted sleep in 13 other subjects


Ages Eligible for Study:   40 Years to 60 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Written informed consent
  • Age 40-60 years
  • Male
  • Subject is in good health as established by medical history, physical examination, ECG and laboratory examination
  • Laboratory parameters (as described on in section 3.7 screening) should be within the normal ranges as applicable in RUNMC, Nijmegen, or clinically acceptable to the investigator
  • Normal sleep behaviour, Pittsburg Sleep Quality index score ≤5
  • MMSE 28 or higher
  • Medication free

Exclusion Criteria:

  • Presence of blood coagulopathy, established by medical history
  • Allergy to local anesthetic agents
  • Contra-indication for spinal catheter placement: medical history of compression of spinal cord, spinal surgery, skin infection, developmental abnormalities in lower spine
  • Subjects who are currently participating in another study or have participated in a clinical study within 30 days, based on their own report about participation history
  • Subjects with a history of drug or alcohol abuse
  • Subjects who are part of the study staff personnel or family members of the study staff personnel
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Please refer to this study by its identifier: NCT01194713

Clinical Research Centre Nijmegen
Nijmegen, Gelderland, Netherlands, 6500HB
Sponsors and Collaborators
University Medical Center Nijmegen
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Dr. J. Claassen, Dr. Jurgen Claassen, University Medical Center Nijmegen Identifier: NCT01194713     History of Changes
Other Study ID Numbers: AWAKE32920
Study First Received: September 1, 2010
Last Updated: May 9, 2014

Keywords provided by Dr. J. Claassen, University Medical Center Nijmegen:
Alzheimer Disease
Cerebrospinal fluid

Additional relevant MeSH terms:
Alzheimer Disease
Sleep Deprivation
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Neurodegenerative Diseases
Neurocognitive Disorders
Mental Disorders
Sleep Wake Disorders
Neurologic Manifestations
Signs and Symptoms processed this record on September 19, 2017