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Depression is currently the leading cause of disability and suicide death worldwide. Several studies, however, have shown that a significant proportion of patients do not respond to standard antidepressants, especially since their symptomatology is dominated by anhedonia or psychomotor retardation reflecting central dopaminergic dysfunction. In order to improve the efficiency and speed of the antidepressant response, it seems essential to highlight this dopaminergic dysfunction, by defining a P300 wave profile specific to the subtype of depressed patients with anhedonic phenotype to whom personalized treatment targeting dopaminergic transmission could in the future be proposed earlier. The investigators therefore wish to highlight an increase in the latency time of P300 and a modification of motor skills (of the walking cycle and of the movement of the hands), without modification of the dopaminergic transmission measured by PETScan, specific to the sub-type of depressive patients, resistant to at least 2 antidepressants of different classes with an anhedonia score> 5/14 on the SHAPS scale. The increased latency of P300 could then be used in the future as a predictive biomarker of resistance to conventional antidepressant treatments specific to this population of anhedonic depressed patients
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Inclusion criteria
Patients with drug-resistant bipolar anhedonic depression:
Patients with drug-resistant bipolar depression of the non-anhedonic type:
Patients with Parkinson's disease :
Exclusion criteria
Healthy volunteers:
Person with a psychiatric disorder in the semi-structured interview Mini International Neuropsychiatric Interview (MINI) (Annex 9).
Person deprived of their liberty by an administrative or judicial decision or person placed under the protection of justice / sub-tutorship or curatorship.
Subjects with poor understanding of spoken or written French
Existence of a neurological, rheumatological, orthopedic or psychiatric history, presence of a severe progressive pathology which can modify brain activity or gait parameters.
Woman of childbearing age not taking effective contraception according to the WHO definition (estrogen-progestogens or intrauterine device or tubal ligation), pregnant (positive urine pregnancy test) or breastfeeding.
Taking unauthorized treatment during the study and:
Dependence on a substance other than nicotine.
Patients with drug-resistant bipolar anhedonic depression:
Patient with depression with psychotic characteristics.
Patient deprived of liberty by an administrative or judicial decision or person placed under the protection of justice / sub-tutorship or curatorship.
Subjects with poor understanding of spoken or written French
Patient with SHAPS anhedonia score less than or equal to 5/14 (Annex 2).
Patient with a neurological, rheumatological, orthopedic or psychiatric history, presence of a severe progressive pathology which can modify brain activity or gait parameters.
Woman of childbearing age not taking effective contraception according to the WHO definition (estrogen-progestogens or intrauterine device or tubal ligation), pregnant (positive urine pregnancy test) or breastfeeding.
Subject with a history of allergy or hypersensitivity to the active substance in DOPACIS (18Fluorodopa) or to any of its excipients.
Taking unauthorized treatment during the study and:
Dependence on a substance other than nicotine.
Patients with drug-resistant bipolar depression of the non-anhedonic type:
Pa Patient with depression with psychotic characteristics.
Patient deprived of liberty by an administrative or judicial decision or person placed under the protection of justice / sub-tutorship or curatorship.
Subjects with poor understanding of spoken or written French
Patient with SHAPS anhedonia score less than or equal to 5/14 (Annex 2).
Patient with a neurological, rheumatological, orthopedic or psychiatric history, presence of a severe progressive pathology which can modify brain activity or gait parameters.
Woman of childbearing age not taking effective contraception according to the WHO definition (estrogen-progestogens or intrauterine device or tubal ligation), pregnant (positive urine pregnancy test) or breastfeeding.
Subject with a history of allergy or hypersensitivity to the active substance in DOPACIS (18Fluorodopa) or to any of its excipients.
Taking unauthorized treatment during the study and:
Dependence on a substance other than nicotine.
Patients with Parkinson's disease:
Patient with depression.
Patient deprived of liberty by an administrative or judicial decision or person placed under the protection of justice / sub-tutorship or curatorship.
Subjects with poor understanding of spoken or written French
Severe form of Parkinson's disease with a Hoehn and Yhar upper or equal 4 (Annex 7).
Patient with other neurological, rheumatological, orthopedic or psychiatric history, presence of a severe progressive pathology which can modify brain activity or gait parameters.
Woman of childbearing age not taking effective contraception according to the WHO definition (estrogen-progestogens or intrauterine device or tubal ligation), pregnant (positive urine pregnancy test) or breastfeeding.
Subject with a history of allergy or hypersensitivity to the active substance in DOPACIS (18Fluorodopa) or to any of its excipients.
Taking unauthorized treatment during the study and:
Dependence on a substance other than nicotine.
Primary purpose
Allocation
Interventional model
Masking
65 participants in 4 patient groups
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Central trial contact
Marie-Laure WELTER, Pr; Julien BLOT
Data sourced from clinicaltrials.gov
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