Abstract
Age-related changes in the brain tissue are reflected in many aspects. We sought to determine the morphology, Nissl bodies, behavioral appearance and oxidative stress in the brain using SAMP10 mice, a substrain of the senescence-accelerated mouse. SAMP10 mice groups divided by different ages (3, 5, 8 and 14 months) were compared with those of control groups with the above corresponding ages. Cortical thickness, Nissl bodies, behavioral appearance and oxidative stress were evaluated through image software, thionine staining, step-down test and colorimetry, respectively. The weight and cortical thickness of the brain in SAMP10 mice significantly reduced from 8 months of age. The results showed that the number of Nissl bodies decreased or Nissl bodies shrank with dark staining in histology. The same result appeared in a step-down test. As the SAMP10 mice grew older, the oxidative stress-related markers superoxide dismutase decreased and malondialdehyde increased after 8 months. Glutathione peroxidase activities showed no age-related changes. The changes of brain morphology and productions of oxidative stress in the brain tissue might contribute to the behavioral abnormality. Deceleration of age-related production of oxidative stress might be expected to be a potent strategy for anti-aging interventions.
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Acknowledgments
This research was supported by grants from the National Natural Science Foundation of China (Grant Nos. 81102679, 81473449), the Fundamental Research Funds for the Central public welfare research institutes (ZZ070824), the National Basic Research Program of China (973 Program, 2015CB554400).
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J. Wang and H. Lei contributed equally to this paper.
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Wang, J., Lei, H., Hou, J. et al. Involvement of oxidative stress in SAMP10 mice with age-related neurodegeneration. Neurol Sci 36, 743–750 (2015). https://doi.org/10.1007/s10072-014-2029-5
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DOI: https://doi.org/10.1007/s10072-014-2029-5