Corticolimbic Degeneration and Treatment of Dementia
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|ClinicalTrials.gov Identifier: NCT00768261|
Recruitment Status : Completed
First Posted : October 8, 2008
Last Update Posted : July 20, 2012
|Condition or disease||Intervention/treatment||Phase|
|Dementia||Drug: Memantine (Namenda®) Drug: Donepezil (Aricept®)||Phase 4|
In this study we will be using Memantine (Namenda®) in an investigational fashion with individuals with very mild to mild dementia. Donepezil (Aricept®) is approved by the Food and Drug Administration for the treatment of Alzheimers disease. Memantine (Namenda®) is currently approved by the Food and Drug Administration for moderate and severe dementia only. This study may be instrumental in the development of a new therapy for others with similar conditions, and to determine whether Memantine (Namenda®) will be helpful to individuals with very mild to mild dementia.
Specific Aim 1. To determine what neuroanatomical measures are most strongly correlated with the progression of clinical and cognitive deficits in patients with dementia of the Alzheimer type (DAT). To accomplish this aim, we will use high-resolution magnetic resonance (MR) imaging and the tools of computational anatomy to assess changes in the structure of selected subcortical (e.g., hippocampus) and cortical (e.g., parahippocampal gyrus and cingulate gyrus) structure along with clinical and cognitive measures of dementia severity in subjects with very mild-to-mild DAT. Specific Aim 2 - To determine whether cholinesterase inhibitors and memantine can slow disease progression in DAT subjects. To accomplish this aim, we will use MR imaging and the tools of computational anatomy to compare the rate of change in the neuroanatomical measures listed above in 1) untreated DAT subjects, 2) DAT subjects treated with donepezil alone, and 3) DAT subjects treated with the combination of donepezil and memantine.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||39 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||None (Open Label)|
|Official Title:||Corticolimbic Degeneration and Treatment of Dementia|
|Study Start Date :||November 2004|
|Actual Primary Completion Date :||October 2009|
|Actual Study Completion Date :||October 2009|
U.S. FDA Resources
No Intervention: 1
Group 1) subjects with very mild (CDR 0.5) to mild (CDR 1) DAT that are untreated with either cholinesterase inhibitors or memantine
Active Comparator: 2
Group 2) subjects with very mild (CDR 0.5) to mild (CDR 1) DAT that are treated with donepezil.
Drug: Donepezil (Aricept®)
5mg/day for six weeks and if no serious side-effects increased to 10mg/dy.
Other Name: Aricept
Active Comparator: 3
Group 3) subjects with very mild (CDR 0.5) to mild (CDR 1) DAT that are treated with the combination of donepezil and memantine.
Drug: Memantine (Namenda®)
Drug treatment will begin with 5 mg/day of donepezil for six weeks. After six weeks of such treatment, the subjects symptoms will be re-evaluated and any side-effects of treatment assessed and recorded. If no serious side-effects of donepezil are encountered, the dose of donepezil will be increased to 10 mg/day. For subjects prescribed the combination of donepezil and memantine, memantine (20 mg/day) will be added to the drug treatment regimen after the dose of donepezil has been established (i.e., at six weeks). Again, memantine will be initially started at 10 mg/day and increased to its full dose only if no serious side-effects are encountered.
Other Name: NamendaDrug: Memantine (Namenda®)
Initial dose of 10mg/day and increased to full dose of 20mg/day if no serious side-effects
Other Name: Namenda
No Intervention: 4
Group 4) nondemented comparison subjects.
- The volume and shape of the hippocampus could predict the outcome of treatment with donepezil in patients with very mild-to-mild DAT. [ Time Frame: two years ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00768261
|Principal Investigator:||John Morris, MD||Washington University School of Medicine|