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Circadian Rhythms and Sleep-Wake Cycles in Parkinson's Disease

This study is currently recruiting participants. (see Contacts and Locations)
Verified September 2014 by Northwestern University
National Institute of Neurological Disorders and Stroke (NINDS)
Information provided by (Responsible Party):
Aleksandar Videnovic, Northwestern University Identifier:
First received: December 3, 2012
Last updated: October 2, 2014
Last verified: September 2014
Disruption of sleep and alertness is one of the most disabling non-motor symptoms of Parkinson's disease (PD). Mechanisms leading to impaired sleep and alertness in PD are not well understood, and treatment options remain limited. The proposed research will examine markers of the circadian system, sleepiness and sleep quality in PD patients and healthy controls. Further, the project will examine effects of bright light exposure on circadin function, sleep and alertness in PD.

Condition Intervention
Parkinson's Disease
Other: Light exposure

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Treatment
Official Title: Circadian Rhythms and Sleep-Wake Cycles in Parkinson's Disease

Resource links provided by NLM:

Further study details as provided by Northwestern University:

Primary Outcome Measures:
  • circadian rhythm of melatonin [ Time Frame: June 2012- May 2017 ]
  • Sleep Efficiency [ Time Frame: June 2012- May 2017 ]
  • Daytime Somnolence [ Time Frame: June 2012- May 2017 ]

Estimated Enrollment: 80
Study Start Date: June 2012
Estimated Study Completion Date: May 2017
Estimated Primary Completion Date: May 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: Control
No Intervention: PD patients without sleep problems
Active Comparator: PD patients with sleep problems
light exposure
Other: Light exposure
Placebo Comparator: PD patients with sleep problem
light exposure
Other: Light exposure


Ages Eligible for Study:   55 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. Diagnosis of idiopathic PD as defined by the United Kingdom PD Society Brain Bank Criteria;
  2. PD Hoehn and Yahr stage 2-4;
  3. Pittsburgh Sleep Quality Index (PSQI) score >5 in group 1, and ≤5 in group 2;
  4. Epworth Sleepiness Scale (ESS) score ≥10 in group 1, and <10 in group 2;

Control participants will be matched for gender and age with PD participants.

Exclusion Criteria:

  1. Atypical or secondary forms of Parkinsonism;
  2. Cognitive impairment as determined by the Mini-Mental State Examination (MMSE) score of ≤ 26;
  3. Presence of depression defined as the Beck Depression Inventory (BDI) score >14;
  4. Use of hypno-sedative drugs for sleep or stimulants; participants will be allowed to taper these drugs and will become eligible at least 4 weeks after the taper is completed;
  5. Use of SSRIs / SNRIs antidepressants, unless the participant has been on a stable dose for at least 3 months prior to the screening;
  6. Use of medications known to affect melatonin secretion;
  7. Unstable/serious medical illness.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01742182

Contact: Laura Wulf, MA 312-503-1999
Contact: Karen Williams, BA 312-503-5645

United States, Illinois
Northwestern University Recruiting
Chicago, Illinois, United States, 60611
Principal Investigator: Aleksandar Videnovic, MD         
Sponsors and Collaborators
Northwestern University
National Institute of Neurological Disorders and Stroke (NINDS)
Principal Investigator: Aleksandar Videnovic, MD Northwestern University
  More Information

Responsible Party: Aleksandar Videnovic, Assistant Professor of Neurology, Northwestern University Identifier: NCT01742182     History of Changes
Other Study ID Numbers: Circadian Rhythms in PD  1K23NS072283-01A1 
Study First Received: December 3, 2012
Last Updated: October 2, 2014

Keywords provided by Northwestern University:
Parkinson's Disease
Excessive Daytime Sleepiness
Circadian Rhythms
Light Therapy

Additional relevant MeSH terms:
Parkinson Disease
Parkinsonian Disorders
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Movement Disorders
Neurodegenerative Diseases processed this record on February 20, 2017