NCT Number: NCT06914284
The goal of this clinical trial is to identify reliable markers of apathy in elderly subjects with bipolar disorder, age between 70 and 85 years, in order to accurately identify subjects at high risk of progressing to dementia by measuring motor activity (actimetrics), recorded language and analysing brain changes (MRI).
Actimetry is the measurement and recording of body movements using an actimeter. This device is worn on the wrist and contains sensors capable of measuring and recording all movements, including those of very low intensity. An automated speech analysis using artificial intelligence is used to detect low-intensity anomalies, and we want to test whether individual differences correspond to individual differences in brain anatomy and function.
Researchers will compare elderly subjects with bipolar disorder and healthy volunteer, age between 70 and 85 years.
Participants will be asked to:
* Perform an MRI * Complete 3 cognitive tests: verbal memory, verbal fluency and an emotional storytelling task, in which you will be asked to describe a memory orally using positive, negative and neutral emotions. * wear an actimeter on your wrist for 4 days.
Interested in participating?
Request Info70 year–85 year
All sexes
Observational
Rennes, Ile Et Vilaine, 35000, France
Location status: Recruiting
Gabriel RG ROBERT, MD
CONTACT
0299393337 ext. +33
Gabriel RG ROBERT, MD
PRINCIPAL_INVESTIGATOR
Nathalie AN ALLETON
CONTACT
0222514121 ext. +33
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
All participants will wear a wGT3X-BT actigraph (wGT3x-BT) for 4 days. Actigraphs are collected back at Day 4, after full 96 hours, when coming to the MRI platform. There, they will undergo 45 minutes MRI that acquire MRI signals to quantify degenerative, inflammatory, vascular and functional cerebral features.
Time frame: during 4 days
These very complex and highly dimensional signals are reduced to a sum, for a given period of time, of the variations in acceleration (in g/sec) after pre-processing (band-pass filtering) for each participants (OABD and healthy controls
Time frame: baseline and only for OABD participants at 12 month and 36 month
To identify a set of speech biomarkers, specific to OABD (compared to HC), 3 cognitive tasks , verbal learning (with the Rey Auditory Verbal Learning Task), semantic verbal fluency task and narrative storytelling are implemented on the Milli® platform. Each of these tasks enable to derive temporal, source, prosodic and spectral features from remote recordings.
Time frame: at Day 4
measure cortical thickness and sub-cortical volumes to identify degenerative alterations measure water diffusion in several cellular compartments and appropriate multi compartment modeling (MCM) such as Neurite Orientation Diffusion and Dispersion Index (NODDI) to identify Inflammation Measure tissue blood flow Using arterial spin labeling (ASL) to identify Vascular health
Contact information is provided by the study sponsor or research team.
Hospital Center Guillaume Régnier
Other
Acronym: ANACONDA
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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