A large body of evidence on depression heterogeneity point to an "immunometabolic" subtype characterized by the clustering of immunometabolic dysregulations with atypical behavioral symptoms related to energy homeostasis. Motivational and motor impairments reflected by symptoms of anhedonia and psychomotor retardation in major depression are closely related to alterations in energy homeostasis, are associated with increased inflammation, and may be a direct consequence of the impact of inflammatory cytokines on the dopamine system in the brain. In the proposed project, the investigators will examine the effect of dopamine stimulation on motivation and motor function in patients with major depression and healthy controls and the role of inflammation using a double-blind, randomized, placebo-controlled, cross-over design. If successful, this study would provide crucial evidence that pharmacologic strategies that increase dopamine may effectively treat inflammation-related symptoms of anhedonia and psychomotor retardation in major depression.
Age range
18 Years – 65 Years
Sex
ALL
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
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Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
The change in response bias (logb) after L-dopa/Carbidopa compared to placebo in the Probabilistic Reward Task (PRT).
Timeframe: All participants will be tested on two separate experimental sessions separated by an interval of 48 hours, after L-dopa/Carbidopa or placebo.
The change in mean gait speed [m/s] after L-dopa/Carbidopa compared to placebo in the dual task.
Timeframe: All participants will be tested on two separate experimental sessions separated by an interval of 48 hours, after L-dopa/Carbidopa or placebo.