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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Holford, N. H. Peace, K. E. |
| Spatial Coverage | United States |
| Description | Author Affiliation: Holford NH ( Department of Pharmacology and Clinical Pharmacology, University of Auckland, New Zealand.); |
| Abstract | Tacrine has been studied in two clinical trials of identical design in patients with probable Alzheimer disease. One trial enrolled patients in the United States, while the other enrolled patients in France. A population pharmacodynamic model has been used to describe the cognitive component of the Alzheimer disease assessment scale (ADASC) using mixed effects nonlinear regression. The model parameters and their population variability and covariance were estimated by using NONMEM. During an observation period of up to 5 months, the rate of disease progression was 6.17 ADASC units/year. The effect of tacrine was described best by a shift in the disease progress curve (-2.99 ADASC units or 177.6 days at a dose of 80 mg/day). The placebo effects associated with tacrine and placebo treatment were similar in magnitude and time course. There was no evidence of tolerance to tacrine but tolerance to the placebo treatment developed during the study. The size of the placebo effect in the French population was 76% larger than in the United States population, and the response to placebo diminished more slowly in the French population. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 23 |
| Volume Number | 89 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1992-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Alzheimer Disease Drug Therapy Cognition Drug Effects Tacrine Therapeutic Use Double-Blind Method Likelihood Functions Models, Biological Placebo Effect Pharmacology Clinical Trial Randomized Controlled Trial Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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