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Position: Home > Articles > Protective effects of Polygonatum cyrtonema decoction on beta-amyloid peptide-induced learning and memory decline in rats Journal of Anhui Agricultural University 2013,40 (1) 101-105

黄精水煎剂对β-淀粉样蛋白诱导的大鼠学习记忆能力下降的保护作用研究

作  者:
王涛涛;程娟;姚余有
单  位:
安徽医科大学公共卫生学院
关键词:
黄精;阿尔茨海默病;学习/记忆;p-tau-thr231
摘  要:
本研究旨在探讨黄精水煎剂(PCD)对β-淀粉样蛋白(Aβ)致阿尔茨海默病(AD)模型大鼠的保护作用及可能机制。通过Aβ25-35微量注射至大鼠双侧海马CA1区建立AD模型,同时用PCD干预,研究PCD对AD模型大鼠学习记忆能力、海马组织损伤和CA1区神经元中过度磷酸化tau蛋白(p-tau)表达的影响。结果表明,PCD可明显缩短模型大鼠逃避潜伏期,对模型大鼠学习记忆能力损伤有保护作用;能改善大鼠海马神经元损伤,减少CA1区在thr231位点tau蛋白的过度磷酸化。这些结果提示,PCD对学习记忆能力有显著的保护作用,这可能与其减少海马内p-tau-thr231水平和消除组织氧化逆境有关。
译  名:
Protective effects of Polygonatum cyrtonema decoction on beta-amyloid peptide-induced learning and memory decline in rats
作  者:
WANG Tao-tao CHEN Juan,YAO Yu-you(School of Public Health,Anhui Medical University,Hefei 230032)
关键词:
polygonatum;Alzheimer's disease;learning and memory;phospho-tau-thr231
摘  要:
In order to investigate the protective effects and underlying mechanisms of Polygonatum cyr-tonema decoction(PCD) on amyloid β-peptide(Aβ)-induced Alzheimer's disease(AD) rats,a AD model was es-tablished by injecting Aβ25-35 into the CA1 field of hippocampus,and PCD was simultaneously administered in-tragastrically to the rats.The learning and memory ability,the histopathologic changes and the expression of phospho-tau protein in CA1 field of hippocampus were evaluated in all the rats.The results showed that PCD ob-viously shorten escape latency of model rats,improve histopathologic changes and reduce the excessive expres-sion of p-tau protein on the site of thr231 in CA1 field of hippocampus in model rats.These results suggested that PCD has protective effects on Aβ25-35-induced learning and memory decline in rats,which is likely to be related with its function of reducing the excessive expression of p-tau protein on the site of thr231 and eliminating oxida-tive stress in tissue.

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