Functional Connectivity Parkinson Disease
31. oktober 2019 opdateret af: University of Colorado, Denver
Functional Connectivity of the Motor Network in Two Major Subtypes of Parkinson Disease
In this study the investigators are looking at two subtypes of Parkinson Disease (PD); "tremor-dominant" (TD) and postural imbalance and gait disorder (PIGD). This study will use magnet resonance imaging (MRI) to see how the brain reacts while resting and doing a finger-tapping task while on and off PD medication. This study will look at the differences between the two sub-types of PD and healthy volunteers.
The investigators will test the hypothesis that connectivity at rest within the motor cortex and between the motor cortex and motor-associated regions such as the supplementary motor area and the pre motor cortex will not be as strong in PIGD compared to TD (increased activity and functional connectivity in TD group)
Studieoversigt
Status
Afsluttet
Betingelser
Undersøgelsestype
Observationel
Tilmelding (Faktiske)
86
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
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Colorado
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Aurora, Colorado, Forenede Stater, 80045
- University of Colorado Denver
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
50 år til 80 år (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
Patients with PD according to UK Brain Bank Criteria will be recruited from the UCD Neurology clinic.
Controls will be recruited from spouses and from the community
Beskrivelse
Inclusion Criteria:
- English as their primary language
- Patients with Parkinson disease and healthy controls will be enrolled
- Parkinson patients must be on a dopaminergic medication (levodopa or dopamine agonist) and on a stable dose over the prior month
Exclusion Criteria:
- If unable to provide informed consent
- Pregnancy
- Excess of 300lbs
- Claustrophobia
- Metal in body
- Untreated neurological or psychiatric condition, who are delusional or have hallucinations, with cognitive impairment (MOCA<26), with a history of head injury sufficient to cause a concussion, or with significant systemic medical diseases (e.g. heart failure, liver failure, kidney failure, poorly controlled diabetes, etc.)
- Healthy control subjects will be excluded if taking any type of dopaminergic or anti-dopaminergic medication
- Subjects who are unable to demonstrate understanding of the study procedures and risks will be excluded
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Observationsmodeller: Case-Control
- Tidsperspektiver: Fremadrettet
Kohorter og interventioner
Gruppe / kohorte |
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Tremor Dominant PD
Volunteers with predominantly tremor-related motor symptoms of PD
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Postural Instability & Gait Difficulty PD
Volunteers with primarily walking & balance-related motor symptoms of PD.
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Healthy Controls
Healthy volunteers consisting of people of same age as PD volunteers, w/o a diagnosis of PD.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Correlation coefficients between nodes of the motor network at rest and during a tapping motor task.
Tidsramme: At time of MRI scan: 12 or more hours after their last dose of dopaminergic medication.
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A measure of the correlation coefficients between nodes of the motor network at rest and during a tapping motor task between the "OFF" and "ON" dopaminergic medication states in the two motor subtype PD patients.
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At time of MRI scan: 12 or more hours after their last dose of dopaminergic medication.
|
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Correlation coefficients between nodes of the motor network at rest and during a tapping motor task.
Tidsramme: At time of 2nd MRI scan: 1 to 3 hours after taking their usual dose(s) dopaminergic medication(s).
|
A measure of the correlation coefficients between nodes of the motor network at rest and during a tapping motor task between the "OFF" and "ON" dopaminergic medication states in the two motor subtype PD patients.
|
At time of 2nd MRI scan: 1 to 3 hours after taking their usual dose(s) dopaminergic medication(s).
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Second level contrast between Parkinson Disease (PD) and Healthy Controls (HC).
Tidsramme: At time of MRI scan: 12 or more hours after their last dose of dopaminergic medication.
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Differences in connectivity as measured by correlation coefficients between nodes of the motor network at rest and during a tapping motor task in PD patients of two motor subtypes and matched healthy controls.
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At time of MRI scan: 12 or more hours after their last dose of dopaminergic medication.
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Task-related whole-brain activations.
Tidsramme: At time of MRI scan, 12 or more hours after their last dose of dopaminergic medication.
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Secondary outcome measures include task-related whole-brain activations as assessed by changes in blood oxygen-dependent (BOLD) contrast during functional magnetic resonance imaging (fMRI) scanning.
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At time of MRI scan, 12 or more hours after their last dose of dopaminergic medication.
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Task-related whole-brain activations.
Tidsramme: At time of 2nd MRI scan, 1 to 3 hours after taking their usual dose(s) dopaminergic medication(s).
|
Secondary outcome measures include task-related whole-brain activations as assessed by changes in blood oxygen-dependent (BOLD) contrast during functional magnetic resonance imaging (fMRI) scanning.
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At time of 2nd MRI scan, 1 to 3 hours after taking their usual dose(s) dopaminergic medication(s).
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Connectivity between other motor and non-motor brain regions during the tasks.
Tidsramme: At time of MRI scan,12 or more hours after their last dose of dopaminergic medication.
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Secondary outcome measures include measuring the connectivity between other motor and non-motor brain regions during the tasks.
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At time of MRI scan,12 or more hours after their last dose of dopaminergic medication.
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Correlations of brain activity and functional connectivity to structural connectivity measures and behavioral and clinical assessments
Tidsramme: At time of MRI scan. 12 or more hours after their last dose of dopaminergic medication.
|
Secondary outcome measures include a measure of the correlations of brain activity and functional connectivity to structural connectivity measures as well as behavioral and clinical assessments.
|
At time of MRI scan. 12 or more hours after their last dose of dopaminergic medication.
|
|
Correlations of brain activity and functional connectivity to structural connectivity measures and behavioral and clinical assessments
Tidsramme: At time of 2nd MRI scan. 1 to 3 hours after taking their usual dose(s) dopaminergic medication(s).
|
Secondary outcome measures include a measure of the correlations of brain activity and functional connectivity to structural connectivity measures as well as behavioral and clinical assessments.
|
At time of 2nd MRI scan. 1 to 3 hours after taking their usual dose(s) dopaminergic medication(s).
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Efterforskere
- Ledende efterforsker: Brian Berman, MD, MS, University of Colorado, Denver
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. juni 2011
Primær færdiggørelse (Faktiske)
1. oktober 2017
Studieafslutning (Faktiske)
1. oktober 2017
Datoer for studieregistrering
Først indsendt
11. december 2012
Først indsendt, der opfyldte QC-kriterier
21. februar 2013
Først opslået (Skøn)
26. februar 2013
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
1. november 2019
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
31. oktober 2019
Sidst verificeret
1. oktober 2019
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 10-1311
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Ingen
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