Not provided
Not provided
Not provided
Not provided
Not provided
Failure to recruit people with very late onset schizophrenia like psychosis
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Drugs such as amisulpride, known as antipsychotic drugs, are used to treat troublesome and distressing symptoms in older people. Although these drugs can be beneficial, they are associated with side effects, particularly in patients with dementia and schizophrenia- like illness. There is an urgent clinical need to understand why this is the case, to guide treatment strategies.
This study aims to utilise brain imaging techniques that measure the action of antipsychotic drugs in the brain to explore the causes of this susceptibility in older people with dementia and schizophrenia-like illness, and translate these findings into direct patient benefit.
The aim of the study is to investigate and compare the relationship between the action of amisulpride at brain sites during the first 10 weeks of amisulpride treatment in two patient groups - Alzheimer's disease and schizophrenia-like illness. Imaging data will be combined with data on drug dosage, levels of drug in the bloodstream and clinical response (symptom reduction and motor side effects) during dose titration.Dose-response modelling will be carried out in both groups to establish the minimum clinically effective dose of amisulpride, optimum dose range and impact of variability and covariates on exposure-response relationships
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Patients - dose titration | Experimental | Amisulpride 50-200mg, 4-12 weeks, with brain imaging |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Patients- dose titration | Drug | dose titration (patients) - 4-10 weeks |
|
| Measure | Description | Time Frame |
|---|---|---|
| dose titration | receptor occupancy compared across 2 patient groups following dose-titration | 12 weeks |
Not provided
| Measure | Description | Time Frame |
|---|---|---|
| modelling of dose-response relationships | dose-response modelling | 12 weeks |
Inclusion Criteria
Treatment and Control (antipsychotic free) Group
Schizophrenia
Alzheimer's
Exclusion Criteria
Treatment Group
Schizophrenia
Alzheimer's
Control (antipsychotic free) Group
Schizophrenia
Alzheimer's
• Prescribed psychotropic medication
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Suzanne J Reeves, MBChB, PhD | Institute of Psychiatry, London | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Institute of Psychiatry, Kings College London | London | SE58AF | United Kingdom |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| D000544 | Alzheimer Disease |
| D012559 | Schizophrenia |
| ID | Term |
|---|---|
| D003704 | Dementia |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| D024801 |
| Tauopathies |
| D019636 | Neurodegenerative Diseases |
| D019965 | Neurocognitive Disorders |
| D001523 | Mental Disorders |
| D019967 | Schizophrenia Spectrum and Other Psychotic Disorders |