Analysis of the effect of memantine in reducing the worsening of clinical symptoms in patients with moderate to severe Alzheimer's disease.
BACKGROUND: Alzheimer's disease (AD) is a progressive neurodegenerative disorder and delaying disease worsening is a relevant treatment outcome. METHODS: Data from 6 randomized, double-blind, placebo-controlled, 6-month studies were pooled and a subgroup of patients (867 on placebo, 959 on memantine) with moderate to severe AD (Mini- Mental State Examination <20) was analyzed. 'Any clinical worsening' was defined as a decline on the Alzheimer's Disease Assessment Scale - Cognitive Subscale (ADAS-cog) or the Severe Impairment Battery (SIB) and on the Clinician's Interview-Based Impression of Change Plus Caregiver Input (CIBIC-plus) and the Alzheimer's Disease Cooperative Study - Activities of Daily Living Inventory (ADCS-ADL), and 'marked clinical worsening' as > or = 4 points decline on the ADAS-cog or > or = 5 points on the SIB and decline on the CIBIC-plus and the ADCS-ADL. RESULTS: More placebo-treated than memantine-treated patients showed any clinical worsening (28 vs. 18%; p < 0.001), and 21% placebo-treated patients compared to 11% memantine-treated patients had marked clinical worsening (p < 0.001). CONCLUSION: In this population of moderate and severe AD patients, treatment with memantine was associated with reducing worsening of clinical symptoms in AD during the 6-month study period.[1]References
- Analysis of the effect of memantine in reducing the worsening of clinical symptoms in patients with moderate to severe Alzheimer's disease. Wilkinson, D., Andersen, H.F. Dement. Geriatr. Cogn. Disord (2007) [Pubmed]
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