期刊
NEUROBIOLOGY OF AGING
卷 65, 期 -, 页码 140-148出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.neurobiolaging.2018.01.020
关键词
alpha-Synuclein; Mouse model; Motor behavior; Burrowing; Nest building; Parkinson's disease
资金
- internal CTRND, UF funds
- [NS089622]
Parkinson's disease manifests as a progressive movement disorder with underlying degeneration of dopaminergic neurons in the substantia nigra, consequent depletion of dopamine levels, and the accumulation of Lewy bodies in the brain. Because alpha-synuclein (alpha-Syn) protein is the major component of Lewy bodies, mouse models expressing wild-type or mutant SNCA/alpha-Syn genes provide a useful tool to investigate canonical characteristics of the disease. We evaluated a mouse model (denoted M20) that expresses human wild-type SNCA gene. The M20 mice showed abnormal locomotor behavior and reduced species-specific home cage activity. However, the direction of behavioral changes was task specific. In comparison with their control littermates, the M20 mice exhibited shorter grip endurance, and longer times to traverse elevated beams, but they descended the vertical pole faster and stayed longer on the accelerated rod than the control mice. The M20 mice were also impaired in burrowing and nest building activities. These results indicate a possible role of alpha-Syn in motor coordination and the motivation to perform species-specific behaviors in the presymptomatic model of synucleinopathy. Published by Elsevier Inc.
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