期刊
BEHAVIOURAL BRAIN RESEARCH
卷 225, 期 1, 页码 215-221出版社
ELSEVIER
DOI: 10.1016/j.bbr.2011.07.034
关键词
Sensorimotor function; SOD1(G37R) transgenic mouse; Amyotrophic lateral sclerosis; Abnormal neurological reflex; Working memory
资金
- Canadian Institutes of Health Research (CIHR)
Amyotrophic lateral sclerosis (ALS) is a neurological disorder involving degeneration of motor neurons in brain and spinal cord, leading to progressive atrophy of skeletal muscles and, ultimately, paralysis and death. Copper-mediated oxidative damage is proposed to play a critical role in the pathogenesis of Cu/Zn superoxide dismutase (SOD1) - linked hereditary amyotrophic lateral sclerosis. To understand more clearly the pathogenesis of sensorimotor dysfunction and to find the most appropriate methods for early detection of symptoms and for monitoring them across time, a murine model was assessed at three time points (5, 8, and 11 months). Transgenic mice with the G37R mutation of human SOW exhibited earliest signs of dysfunction at 8 months in terms of a pathological hindpaw clasping reflex, as well as slowed movement time on a suspended bar, anomalies in footprint patterns, weaker grip strength, raised somatosensory thresholds, and deficits in passive avoidance learning, yielding a margin of 3-4 months before death to test experimental therapies. (C) 2011 Elsevier B.V. All rights reserved.
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