The senescence-accelerated prone mouse (SAMP8): a model of age-related cognitive decline with relevance to alterations of the gene expression and protein abnormalities in Alzheimer's disease - PubMed

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• PMID: 16026957
• DOI: 10.1016/j.exger.2005.05.007

Review

The senescence-accelerated prone mouse (SAMP8): a model of age-related cognitive decline with relevance to alterations of the gene expression and protein abnormalities in Alzheimer's disease

D Allan Butterfield et al. Exp Gerontol. 2005 Oct.

Abstract

The senescence-accelerated mouse (SAM) is an accelerated aging model that was established through phenotypic selection from a common genetic pool of AKR/J strain of mice. The SAM model was established in 1981, including nine major senescence-accelerated mouse prone (SAMP) substrains and three major senescence-accelerated mouse resistant (SAMR) substrains, each of which exhibits characteristic disorders. Recently, SAMP8 have drawn attention in gerontological research due to its characteristic learning and memory deficits at old age. Many recent reports provide insight into mechanisms of the cognitive impairment and pathological changes in SAMP8. Therefore, this mini review examines the recent findings of SAMP8 mice abnormalities at the gene and protein levels. The genes and proteins described in this review are functionally categorized into neuroprotection, signal transduction, protein folding/degradation, cytoskeleton/transport, immune response and reactive oxygen species (ROS) production. All of these processes are involved in learning and memory. Although these studies provide insight into the mechanisms that contribute to the learning and memory decline in aged SAMP8 mice, higher throughput techniques of proteomics and genomics are necessary to study the alterations of gene expression and protein abnormalities in SAMP8 mice brain in order to more completely understand the central nervous system dysfunction in this mouse model. The SAMP8 is a good animal model to investigate the fundamental mechanisms of age-related learning and memory deficits at the gene and protein levels.

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