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

May 9, 2014 updated by: Dr. J. Claassen, University Medical Center Nijmegen

Losing Sleep Over Alzheimer's Disease? Effects of Sleep Deprivation on Cerebrospinal Fluid Amyloid-beta Dynamics

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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

26

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Netherlands
    • Gelderland
      • Nijmegen, Gelderland, Netherlands, 6500HB
        • Clinical Research Centre Nijmegen

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

40 years to 60 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
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.
6 timepoints during one night of sleep deprivation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Medical Center Nijmegen

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2011

Primary Completion (Actual)

September 1, 2013

Study Completion (Actual)

September 1, 2013

Study Registration Dates

First Submitted

September 1, 2010

First Submitted That Met QC Criteria

September 2, 2010

First Posted (Estimate)

September 3, 2010

Study Record Updates

Last Update Posted (Estimate)

May 13, 2014

Last Update Submitted That Met QC Criteria

May 9, 2014

Last Verified

May 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • AWAKE32920

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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