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NCT06240624Active, not recruiting

Mapping Levodopa Effects on Cortico-basal Ganglia Circuit Function in Parkinson's Disease

Dynamic Brain Mapping of the Functional Effects of Levodopa on Multiple Cortex-basal Ganglia Circuits in Parkinson ́s Disease

Source: ClinicalTrials.gov · Last updated 22 May 2025

Brief summary (registry, in English)

Levodopa-induced dyskinesia (LID) in Parkinson's disease (PD) are involuntary movements caused by long-term treatment with dopaminergic replacement therapy (levodopa). During the cause of PD, most patients develop LID. In this study, the investigators plan to investigate how the cortico-basal-ganglia networks are affected in LID. The investigators will examine PD patients with and without LID as well as healthy age-matched controls using fMRI and PET. During the fMRI experiment, participants will perform a novel go-no task engaging both motor, emotional and reward brain networks. Patients will be scanned before and after intake of levodopa to study the dynamic effects of dopaminergic therapy. Furthermore, a dopamine transporter PET will be acquired to study the dopaminergic degeneration of the patients with PD.

Status (registry)
Active, not recruiting
Study type
Observational
Enrollment
75 (estimated)
First submitted
28 Sept 2023
Start date
15 Aug 2022
Primary completion date
31 Dec 2025
Lead sponsor
Danish Research Centre for Magnetic Resonance
NCT number
NCT06240624

What you commit to

  • Study type: Observational
  • Planned participants: 75
  • From 15 Aug 2022 to the primary completion date, 31 Dec 2025
  • 1 site in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Other illness

  • History of other neurologic or psychiatric disease
  • History of epilepsy or familiar dispositions of epilepsy

Other

  • Pregnancy or breastfeeding
  • Pacemaker or other implanted metallic or electronic devices which contraindicate MRI or TMS of the brain
  • Claustrophobia

Who the study is looking for

  • Aged 18 or more

Age in the registry: 18 years to - · Sex: All · Accepts healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Danish Research Centre for Magnetic Resonance, Hvidovre Hospital
Coordinator of this site? Confirm its status
HvidovreDenmarkUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.