Abstract
The SAM strains, a group of related inbred strains consisting of senescence-prone inbred strains (SAMP) and senescence-resistant inbred strains (SAMR), have been successfully developed by selective inbreeding of the AKR/J strain of mice donated by the Jackson laboratory in 1968. The characteristic feature of aging common to the SAMP and SAMR is accelerated senescence and normal aging, respectively. Furthermore, SAMP and SAMR strains of mice manifest various pathobiological phenotypes spontaneously. Among SAMP strains, SAMP8 and SAMP10 mice show age-related behavioral deterioration such as deficits in learning and memory, emotional disorders (reduced anxiety-like behavior and depressive behavior) and altered circadian rhythm associated with certain pathological, biochemical and pharmacological changes. Here, the previous and recent literature on SAM mice are reviewed with an emphasis on SAMP8 and SAMP10 mice. A spontaneous model like SAM with distinct advantages over the gene-modified model is hoped by investigators to be used more widely as a biogerontological resource to explore the etiopathogenesis of accelerated senescence and neurodegenerative disorders.
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Acknowledgments
The author acknowledges the invitation by Prof. Jiankang Liu and Prof. Midori Hiramatsu to review the special issues dedicated to Emeritus Prof. Akitane Mori, giving the author a valuable chance to extensively review the SAM research from 1981 to 2008. Further, the author greatly appreciates the contribution of Prof. Akitane Mori and his colleagues to SAM research, particularly on the oxidative stress.
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Special issue article in honour of Dr. Akitane Mori.
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Takeda, T. Senescence-Accelerated Mouse (SAM) with Special References to Neurodegeneration Models, SAMP8 and SAMP10 Mice. Neurochem Res 34, 639–659 (2009). https://doi.org/10.1007/s11064-009-9922-y
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DOI: https://doi.org/10.1007/s11064-009-9922-y
Keywords
- Animal model
- Neurodegeneration model
- Senescence-accelerated mouse (SAM)
- SAM
- SAMP8
- SAMP10
- SAMR1
- Aging
- Accelerated senescence
- Lifespan
- Genetic profile
- Behavior
- Neurobiology
- Deficits in learning and memory
- Emotional disorders
- Circadian rhythm
- Anxiety
- Reduced anxiety-like behavior, depressive behavior
- Passive avoidance test
- Active avoidance test
- Morris water maze test
- Radial maze test
- Tail suspension test
- Neuropathology
- Neurochemistry
- Neurotransmitter
- Brain atrophy
- Blood-brain barrier (BBB)
- Neurodegenerative disorders
- Agerelated pathologies
- Alzheimer’s disease
- Aβ
- Oxidative stress
- Mitochondrial dysfunction
- Gene expression
- Proteomics
- LTP