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首页> 外文期刊>International Journal of Neuroscience >Comparison of cognitive performance between two rat models of vascular dementia
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Comparison of cognitive performance between two rat models of vascular dementia

机译:两种大鼠血管性痴呆模型认知能力的比较

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Background and Purpose: An ideal animal model to explore that pathogenesis and prevention of dementia is essential. The present study was designed to compare the difference of behavior and cerebral blood flow of the two vascular dementia rat models at different time intervals. Methods: The rats were randomly allocated to three groups: bilateral common carotid artery occlusion (BCCAO) group, thromboembolism (TE) group and sham-operated (SHAM) group. The performance in the Morris water maze (MWM) was analyzed at 7, 14 and 28 d after operation and cerebral blood flow (CBF) was analyzed at 28 days after operation. Result: The results showed that the two models exhibited longer latency, less times to crossing platform in MWM and lower CBF than the SHAM rats. Compared with the TE rats, the BCCAO rats have a significant prolongation of escape latency at 7 days and 28 days. In the probe trial, the BCCAO rats showed less number of times across the platform. Conclusion: The BCCAO rats maybe provide a more useful model to study the physiopathological mechanisms of cognitive impairment related to chronic cerebral ischemia.
机译:背景与目的:一种理想的动物模型,用于探索痴呆的发病机理和预防至关重要。本研究旨在比较两种血管性痴呆大鼠模型在不同时间间隔的行为和脑血流量的差异。方法:将大鼠随机分为三组:双侧颈总动脉闭塞(BCCAO)组,血栓栓塞(TE)组和假手术(SHAM)组。术后第7、14和28天分析莫里斯水迷宫(MWM)的性能,术后28天分析脑血流量(CBF)。结果:与SHAM大鼠相比,两种模型在MWM中表现出更长的潜伏期,更少的穿越平台时间和更低的CBF。与TE大鼠相比,BCCAO大鼠在7天和28天的逃避潜伏期显着延长。在探测试验中,BCCAO大鼠在整个平台上显示的次数较少。结论:BCCAO大鼠可能为研究慢性脑缺血相关认知障碍的生理病理机制提供更有用的模型。

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