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Vol. 8, No. 6, pp. 301-308, November/December 2001

REVIEW/MODEL SYSTEMS SERIES
Learning and Memory in Transgenic Mice Modeling Alzheimer's Disease

Karen Hsiao Ashe

Departments of Neurology and Neuroscience, University of Minnesota, Minneapolis, Minnesota 55455, USA

Recent advances in behavioral analyses of transgenic mouse models of Alzheimer's disease (AD) are discussed, and their impact on our understanding of the molecular basis of cognitive impairment in AD is considered. Studies of the relationship between memory and Aß in transgenic mice expressing the amyloid precursor protein (APP) and its variants suggest that aging promotes the formation of soluble Aß assemblies mediating negative effects on memory. A significant component of memory loss in APP transgenic mice is apparently caused by soluble Aß assemblies, but whether and how much of the dementia within individuals afflicted with AD is caused by these Aß species is unclear. Future studies in composite transgenic mice developing amyloid plaques, neurofibrillary tangles, and other AD pathology may allow for the determination of the relative contribution of Aß and non-Aß components to dementia.

LEARNING & MEMORY 8:301-308 © 2001 by Cold Spring Harbor Laboratory Press ISSN1072-0502/01 $5.00
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