- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01823354
Executive Dysfunction in Restless Legs Syndrome: Clinical Correlates and Outcome After Therapeutic Management
Executive Dysfunction in Restless Legs Syndrome: Determination of Clinical Correlates and Outcome After Therapeutic Management
Restless leg syndrome (RLS) is a common neurological disorder whose diagnosis is only clinical. The efficacy of dopaminergic agents in improvement of sensorimotor symptoms advance the hypothesis that altered dopaminergic transmission is at the origin of this condition. RLS usually leads to a sleep fragmentation, which induces sometimes severe insomnia most often associated, in clinical practice, to a cognitive complaint (attentional in nature). Executive functions in which dopaminergic transmission is heavily involved refer to a set of complex functions. At least three of them should be considered during their evaluation (ie flexibility, inhibition, and the updating of working memory). These functions are among the targets of the alteration of the quality and quantity of sleep. The few studies that have focused on the study of the integrity of executive functions in RLS have discordant results. The lack of control of key variables in the assessment of executive functioning (ie intellectual performance, depressive symptomatology, generalized slowing in information processing) and the lack of reference in the theoretical approach in executive functions are certainly the two main reasons. Moreover, the question of polysomnographic correlates and the reversibility of these cognitive abnormalities after pharmacological management of RLS remains unanswered today.
The main objective of this study is to compare the executive performance of untreated RLS patients with a group of matched controls.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Yves Dauvilliers, PU, PH
- Phone Number: +33 4 67 33 72 77
- Email: y-dauvilliers@chu-montpellier.fr
Study Locations
-
-
-
Montpellier, France, 34295
- Recruiting
- UH Montpellier
-
Contact:
- Claire Chauveton
- Phone Number: +33 467330924
- Email: c-chauveton@chu-montpellier.fr
-
Principal Investigator:
- Yves Dauvilliers, PU, PH
-
Sub-Investigator:
- Bertrand CARLANDER, PH
-
Nîmes, France, 30209
- Not yet recruiting
- UH Nîmes
-
Contact:
- Giovanni CASTELNOVO, PH
-
Principal Investigator:
- Giovanni CASTELNOVO, PH
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Non-specific criteria (patients and controls)
- Age: 18 to 70 years old
- Fluency in French (written and oral);
- intellectual performance within the normal range (f-NART> 84)
- Subject has signed and returned to the investigator a copy of the signed informed consent; .Affiliated to a social security scheme.
Specific criteria patients
- Response to the diagnostic criteria established by the standards of the ICSD-II (2005) and IRLS Study Group (2003) with a severity scale listed at least 21 (score at least severe);
- MPMS score> 10 / h; .ferritin > 50 ng/ml.
Exclusion Criteria:
Exclusion criteria (patients and controls)
- Taking any psychotropic medication within 15 days prior to polysomnography (except for patients on dopamine agonist reassessed at 6 months follow-up);
- Pregnant and lactating women;
- Pneumologic affection
- Night shift;
- Apnea-hypopnea index > 15; .Major subjects protected by the law, under guardianship.
Exclusion criteria (controls)
- Neurological or psychiatric current and/or past;
- MPMS score> 10 / h; .Subject currently participating in another clinical research project prohibiting joint participation in another biomedical research, or who are in a period of exclusion or who have already received the maximum legal compensation for stresses in the year.
Exclusion criteria (patients)
- Presence of other neurological conditions present and / or a psychiatric disorder (other than a mood disorder and / or anxiety); .RLS patients previously treated with a dopamine agonist who has not stopped treatment at least 15 days before the start of the study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Patients
Polysomnography, Assessment of executive functions, Clinical scales, Medical consultation
|
Polysomnography involves the collection of the electroencephalogram, electromyogram of, and electro-oculogram to differentiate the various stages of sleep.
Determination of different stages and cycles of sleep will be manually by reading the EEG, EMG, EOG over periods of 30 seconds after the standardized criteria of AASM (American Academy of Sleep Medicine).
Registration will take place between sleep and 23h 7am.
Index of Restless Legs Syndrome Severity, Index of insomnia Severity, Beck's Inventory of Depression, Anxiety Inventory: State-Trait, form Y.
Verbal fluencies Test GREFEX (Assessment of the spontaneous flexibility), Stroop Test GREFEX (Inhibition of the automatic response Capacity ), Trail Making Test GREFEX (Assessment of flexibility "reactive"), Wisconsin Card Sorting Test(Overall assessment of executive functions), Working memory TAP, Flexibility TAP, Go/no go TAP, Phasic alertness (Assessment of speed information processing).
open questions
|
Other: Controls
Polysomnography, Assessment of executive functions, Clinical scales Medical consultation
|
Polysomnography involves the collection of the electroencephalogram, electromyogram of, and electro-oculogram to differentiate the various stages of sleep.
Determination of different stages and cycles of sleep will be manually by reading the EEG, EMG, EOG over periods of 30 seconds after the standardized criteria of AASM (American Academy of Sleep Medicine).
Registration will take place between sleep and 23h 7am.
Index of Restless Legs Syndrome Severity, Index of insomnia Severity, Beck's Inventory of Depression, Anxiety Inventory: State-Trait, form Y.
Verbal fluencies Test GREFEX (Assessment of the spontaneous flexibility), Stroop Test GREFEX (Inhibition of the automatic response Capacity ), Trail Making Test GREFEX (Assessment of flexibility "reactive"), Wisconsin Card Sorting Test(Overall assessment of executive functions), Working memory TAP, Flexibility TAP, Go/no go TAP, Phasic alertness (Assessment of speed information processing).
open questions
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparison of the Verbal fluency test between untreated RLS patients and control subjects
Time Frame: Day 0
|
Number of correct words (without repetitions and intrusions) provided by the subject in each condition.
|
Day 0
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change of the Clinical Scales at day 180 (composite criteria)
Time Frame: Day 0 and day180
|
|
Day 0 and day180
|
Change of the sleep fragmentation at day 180 (composite criteria)
Time Frame: Day 0 and Day 180
|
The severity of sleep fragmentation is determined by these parameters:
|
Day 0 and Day 180
|
Assessment of executive functions (composite criteria)
Time Frame: Day 180
|
|
Day 180
|
Change of the Verbal fluency test after dopamin agonist treatment in RLS patients
Time Frame: Day 0 and Day 180
|
Number of correct words (without repetitions and intrusions) provided by the subject in each condition.
|
Day 0 and Day 180
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Yves Dauvilliers, PU, PH, UH Montpellier
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 8964
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.
Clinical Trials on Restless Legs Syndrome
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Walter Reed National Military Medical CenterWithdrawnEkbom Syndrome | Restless Legs Syndrome, | Restless Legs,United States
-
XenoPort, Inc.CompletedRestless Legs Syndrome (RLS)United States
-
GlaxoSmithKlineCompletedRestless Legs Syndrome | Restless Legs Syndrome (RLS)United States
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Otsuka Pharmaceutical Co., Ltd.CompletedIdiopathic Restless Legs Syndrome
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American Regent, Inc.CompletedRestless Legs Syndrome (RLS)United States
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Astellas Pharma IncCompletedRestless Legs Syndrome (RLS)Japan
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Otsuka Pharmaceutical Co., Ltd.CompletedIdiopathic Restless Legs SyndromeJapan
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UCB PharmaCompletedIdiopathic Restless Legs SyndromeGermany
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Pfizer's Upjohn has merged with Mylan to form Viatris...CompletedIdiopathic Restless Legs SyndromeUnited States, Spain, Finland, Italy, Germany, Sweden, Austria, Netherlands, United Kingdom
-
American Regent, Inc.CompletedRestless Legs Syndrome (RLS)
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