Short-term β-amyloid Vaccinations Do Not Improve Cognitive Performance Cognitively Impaired APP+PS1 Mice
Antibodies, Cognitive Ability, Immunization, Memory, Beta Amyloid, Alzheimer's Disease, Maze Learning, Mice
Digital Object Identifier (DOI)
Prior work demonstrated that β-amyloid (Aβ) immunotherapy for 8 months prevented cognitive impairment in 16-month-old APP+PS1 transgenic mice. In the present study, 4 immunizations administered biweekly to cognitively impaired 16-month-old transgenic mice could not reverse deficits in working memory or reference memory in the radial arm water maze or in visual platform recognition, possibly because of inadequate antibody exposure. Nontransgenic mice showed cognitive savings between the 16- and 18-month test periods, but the transgenic groups did not. These results suggest that a longer period of active immunotherapy, or passive immunization, may be required to provide sufficient antibody titers to improve cognition in older transgenic mice. Aβ-based immunotherapy for Alzheimer's disease will likely be more successful prophylactically than therapeutically.
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Citation / Publisher Attribution
Behavioral Neuroscience, v. 117, issue 3, p. 478-484
Scholar Commons Citation
Austin, L.; Arendash, Gary W.; Gordon, M. N.; Diamond, David M.; DiCarlo, G.; Dickey, C.; Ugen, Kenneth; and Morgan, David, "Short-term β-amyloid Vaccinations Do Not Improve Cognitive Performance Cognitively Impaired APP+PS1 Mice" (2003). Psychology Faculty Publications. 1328.