- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05539378
Exploring the Link Between Sleep and Brain Clearance (BBCDS)
May 15, 2023 updated by: University Children's Hospital, Zurich
Biomarkers of Brain Clearance During Sleep
The purpose of this study is to assess the link between sleep and the clearance of waste products from the brain.
This will be assessed in a group of healthy older adults.
Study Overview
Status
Enrolling by invitation
Conditions
Intervention / Treatment
Detailed Description
First, the investigators want to assess the relationship between sleep parameters and markers for brain clearance, assessed with MRI and blood samples.
Second, the investigators want to probe whether associations can be influenced by modulation of sleep parameters by means of auditory stimulation.
Study Type
Interventional
Enrollment (Anticipated)
40
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
-
-
-
Zurich, Switzerland
- Institute for Regenerative Medicine, University Hospital Zurich
-
-
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
50 years to 80 years (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Description
Inclusion Criteria:
- Participation in previous longitudinal cohort studies at the study site
- Ability to provide written and verbal informed consent
- Fluency in the German language
- Stable home situation that allows for reliable application of the intervention for the duration of the study
- Ability to apply the intervention for the duration of the study, either alone or with support from a co-habitant
- For women: Hormonal contraception, if menstrual cycle is still present or has been present within a year
- Good general health status, normal cognitive function
Exclusion Criteria:
- Failure or inability to give informed consent
- Inability to follow the procedures of the investigation
- For women: pregnancy or breastfeeding
- Presence of sleep disorders (e.g. sleep apnoea, narcolepsy, restless leg syndrome, insomnia, REM sleep disorder)
- Shift-work or a home situation that requires several awakenings during the night (e.g. newborn)
- History of serious illness likely to interfere with study outcomes
- Presence or history of a diagnosed neuropsychiatric illness
- Current diagnosis of uncontrolled or poorly controlled diabetes
- Current cancer of the brain or unstable cancer undergoing treatment
- Evidence of serious atherosclerotic cardiovascular disease
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: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Auditory Stimulation
Auditory Stimulation during sleep
|
enhancement of sleep slow wave activity through acoustic stimulation
|
Sham Comparator: No Auditory Stimulation
Playing no tones during sleep but still recording brain activity
|
Playing no tones during sleep but still recording brain activity
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Correlation between EEG slow wave activity (uV) and cerebrospinal fluid flow (ml/min) from phase contrast MRI
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and diffusivity (mm2/s) from diffusion MRI
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and perfusion (ml/min/100 ml) from arterial spin labelling MRI
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and beta-amyloid (pg/ml)
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and tau (pg/ml)
Time Frame: 2 weeks
|
2 weeks
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Correlation between EEG slow wave activity (uV) and fatigue, assessed via the fatigue severity scale (FSS) questionnaire
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and sleepiness, assessed with the Epworth Sleepiness Scale questionnaire
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and memory function, assessed with the Hopkins Verbal Learning Test (memory score)
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and attention, assessed with the Trail Making Test (time to completion)
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and C-Reactive Protein (mg/L), assessed from a blood sample
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and TNF-alpha (pg/L), assessed from a blood sample
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and interleukins (pg/L), assessed from a blood sample
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and executive function (summary score, dimensionless)
Time Frame: 2 weeks
|
2 weeks
|
Correlation between EEG slow wave activity (uV) and neuro-metabolite levels (mmol) from magnetic resonance spectroscopy
Time Frame: 2 weeks
|
2 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Collaborators
Investigators
- Principal Investigator: Anton Gietl, Institute for Regenerative Medicine, University of Zurich
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 (Anticipated)
May 1, 2023
Primary Completion (Anticipated)
July 1, 2025
Study Completion (Anticipated)
July 1, 2026
Study Registration Dates
First Submitted
July 20, 2022
First Submitted That Met QC Criteria
September 13, 2022
First Posted (Actual)
September 14, 2022
Study Record Updates
Last Update Posted (Actual)
May 16, 2023
Last Update Submitted That Met QC Criteria
May 15, 2023
Last Verified
May 1, 2023
More Information
Terms related to this study
Other Study ID Numbers
- BBCDS
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
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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