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Effect of Panax notoginseng saponins on the expression of beta-amyloid protein in the cortex of the parietal lobe and hippocampus, and spatial learning and memory in a mouse model of senile dementia

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Neural Regeneration Research 2008年第12期3卷 1297-1303页

作者： Zhenguo Zhong Dengpan Wu Liang Lu Jinsheng Wang Wenyan Zhang Zeqiang Qu Center of Research ＆ Development of New Drugs Guangxi College of Traditional Chinese Medicine Nanning 530001 Guangxi ZhuangAutonomous Region China

BACKGROUND： The pharmacological actions of Panax notoginseng saponins （PNS） lie in removing free radicals, anti-inflammation and anti-oxygenation. It can also improve memory and behavior in rat models of Alzheimer＇s disease. OBJECTIVE： Using the Morris water maze, immunohistochemistry, real-time PCR and RT-PCR, this study aimed to measure improvement in spatial learning, memory, expression of amyloid precursor protein （App） and β -amyloid （A β ）, to investigate the mechanism of action of PNS in the treatment of AD in the senescence accelerated mouse-prone 8 （SAMP8） and compare the effects with huperzine A. DESIGN, TIME AND SETTING： A completely randomized grouping design, controlled animal experiment was performed in the Center for Research ＆ Development of New Drugs, Guangxi Traditional Chinese Medical University from July 2005 to April 2007. MATERIALS： Sixty male SAMP8 mice, aged 3 months, purchased from Tianjin Chinese Traditional Medical University of China, were divided into four groups： PNS high-dosage group, PNS low-dosage group, huperzine A group and control group. PNS was provided by Weihe Pharmaceutical Co., Ltd. （batch No.： Z53021485, Yuxi, Yunan Province, China）. Huperzine A was provided by Zhenyuan Pharmaceutical Co., Ltd. （batch No.： 20040801, Zhejiang, China）. METHODS： The high-dosage group and low-dosage group were treated with 93.50 and 23.38 mg/kg PNS respectively per day and the huperzine A group was treated with 0.038 6 mg/kg huperzine A per day, all by intragastric administration, for 8 consecutive weeks. The same volume of double distilled water was given to the control group. MAIN OUTCOME MEASURES： After drug administration, learning and memory abilities were assessed by place navigation and spatial probe tests. The recording indices consisted of escape latency （time-to-platform）, and the percentage of swimming time spent in each quadrant. The number of A β 1-40, A β 1-42 and App immunopositive neurons in the brains of SAMP8 mice was ana

关键词： Alzheimer's disease Panax notoginseng saponins learning and memory β -amyloid precursor protein 1-40 β -amyloid precursor protein 1-42 amyloid β -peptide synaptophysin senescence accelerated mouse-prone 8

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Effects of Panax notoginseng saponins in a rat model of Alzheimer's disease

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Neural Regeneration Research 2008年第1期3卷 37-40页

作者： Zhenguo Zhong Zeqiang Qu Yunping Bao Naiping Wang Fengfen Zhang Wenyan Zhang Center of Research ＆ Development of New Drugs Guangxi Traditional Chinese Medical University Nanning 530001 Guangxi Zhuang Autonomous Region China Department of Pharmacology Guangxi Traditional Chinese Medical University Nanning 530001 Guangxi Zhuang Autonomous Region China

BACKGROUND： Modem pharmacological studies have demonstrated that Panax notoginseng saponins （PNS） can ameliorate and protect from neuropathological impairment. Whether PNS can improve the abnormality in memory and behavior of rats with Alzheimer＇s disease （AD） remains unclear. OBJECTIVE： Based on a Morris water maze test, this study aimed to measure improvements of spatial learning and memory by PNS in a rat model of AD, and to compare effects with huperzine A. DESIGN： A completely randomized grouping design, controlled animal experiment. SETTING： Center of Research ＆ Development of New Drugs, Guangxi Traditional Chinese Medical University. MATERIALS： Ninety healthy Wistar rats of both genders, 15-month-old （n =75） and 3-month-old rats as young controls （n =15）, were used for this study. The study was performed in accordance with animal ethics guidelines for the use and care of animals. PNS was provided by Weihe Pharmaceutical Co., Ltd （permission No. Z53021485, Yuxi, Yunan Province, China）. Morris water maze equipment was provided by the Institute of Physiology, Chinese Academy of Science. METHODS： This study was performed at the Center of Research ＆ Development of New Drugs, Guangxi Traditional Chinese Medical University from June 2003 to April 2005. Of the included rats, 15 healthy aged rats were randomly chosen as aged controls, and the remaining 60 aged rats were randomly divided into 4 groups with 15 rats in each： model group, PNS high- and low-dose groups, and an huperzine A group. Rats in the model group and the 3 treated groups were treated with intraperitoneal infusion of 9.6 g/L D-galactose （5 mL/kg） every day for 6 weeks successively to induce a subacute aging model. During week 7, animals received 1 μ L ibotenic acid （5 g/L） bilaterally into the nucleus basalis of Meynert to create a rat model of AD. The young and old rat controls received, in parallel, a corresponding volume of saline. Two weeks later, rats in the PNS high- and low-dose groups were gav

关键词： Alzheimer's disease Panax notoginseng saponins animal model Morris water maze learning memory

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三七总皂苷对快速老化模型小鼠脑内syp，tau基因表达的影响

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中国中药杂志 2009年第10期34卷 1261-1263页

作者：吕良钟振国吴登攀柴立民张雯艳广西中医学院新药研究开发中心广西南宁530001 中国中医科学院眼科医院北京100040

目的:研究三七总皂苷(Panax notoginseng saponins,PNS)对快速老化模型小鼠(senescence accelerated mouseprone 8,SAMP 8)脑内突触素(synaptophysin,syp)、tau基因表达的影响。方法:SAMP 8小鼠随机分为PNS低、高(23.38,***-1.d-1)剂量组、阳性对照药物石杉碱甲(0.038 6 ***-1.d-1)组、模型组。各给药组分别按设定剂量灌胃给药,空白组灌服双蒸水,连续8周。应用实时荧光逆转录聚合酶链式反应(real-time RT-PCR)的方法,检测PNS对SAMP 8脑内syp,tau mRNA含量的影响。结果:PNS高、低剂量组均可以增加syp mRNA含量(P<0.05或P<0.01),PNS对tau mRNA含量未见明显影响。结论:PNS可以在转录水平上调SAMP 8脑内syp基因的表达。

关键词：三七总皂苷快速老化模型小鼠突触素 tau 基因表达

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三七总皂苷对老年性痴呆动物模型快速老化小鼠大脑Aβ_(1-40)、Aβ_(1-42)表达的影响

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中药材 2009年第1期32卷 82-85页

作者：钟振国吴登攀王进声王乃平张雯艳吕良屈泽强广西中医学院广西南宁530001

目的:探讨三七总皂苷(PNS)对快速老化小鼠SAMP8大脑Aβ1-40、Aβ1-42表达的影响。方法:采用免疫组织化学方法,随机选取快速老化小鼠大脑顶叶皮层、海马周围白质连续五个视野在高倍显微镜下观察,并计数五个视野下Aβ1-40、Aβ1-42免疫阳... 详细信息

目的:探讨三七总皂苷(PNS)对快速老化小鼠SAMP8大脑Aβ1-40、Aβ1-42表达的影响。方法:采用免疫组织化学方法,随机选取快速老化小鼠大脑顶叶皮层、海马周围白质连续五个视野在高倍显微镜下观察,并计数五个视野下Aβ1-40、Aβ1-42免疫阳性细胞的平均个数。结果:PNS能明显减少快速老化小鼠大脑Aβ1-40、Aβ1-42免疫阳性神经元的数量。结论:PNS对SAMP8小鼠大脑Aβ1-40及Aβ1-42的表达有明显的抑制作用。

关键词：三七总皂苷快速老化痴呆模型小鼠 Aβ1-40 Aβ1-42

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三七总皂苷对快速老化小鼠SAMP8大脑β-淀粉样蛋白前体蛋白表达的影响

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时珍国医国药 2008年第11期19卷 2628-2630页

作者：钟振国吴登攀王进声张雯艳吕良屈泽强广西中医学院新药研究开发中心广西南宁530001

目的探讨三七总皂苷(PNS)对快速老化小鼠SAMP8β-淀粉样蛋白前体蛋白(APP)表达的影响。方法采用免疫组织化学方法,在高倍显微镜下随机选取小鼠大脑顶叶皮层和海马周围白质连续五个视野,并计数五个视野APP免疫阳性细胞平均个数。结果PNS... 详细信息

目的探讨三七总皂苷(PNS)对快速老化小鼠SAMP8β-淀粉样蛋白前体蛋白(APP)表达的影响。方法采用免疫组织化学方法,在高倍显微镜下随机选取小鼠大脑顶叶皮层和海马周围白质连续五个视野,并计数五个视野APP免疫阳性细胞平均个数。结果PNS能明显减少快速老化小鼠大脑APP阳性细胞数量。结论PNS对SAMP8 APP的表达有明显抑制作用。

关键词：三七总皂苷快速老化小鼠 β-淀粉样蛋白前体蛋白免疫组织化学

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三七总皂苷对快速老化小鼠SAMP8空间探索和学习记忆力的影响

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时珍国医国药 2008年第10期19卷 2347-2349页

作者：吴登攀钟振国王进声王乃平张雯艳吕良屈泽强广西中医学院新药研究开发中心广西南宁530001

目的探讨三七总皂苷(PNS)对快速老化小鼠SAMP8空间学习记忆功能的改善作用。方法采用Morris水迷宫方法以寻求次数、逃避潜伏期、原平台象限比、跨平台次数等为指标观察其行为学改变。结果PNS高、低剂量组在Morris水迷宫测试中,逃避潜伏... 详细信息

目的探讨三七总皂苷(PNS)对快速老化小鼠SAMP8空间学习记忆功能的改善作用。方法采用Morris水迷宫方法以寻求次数、逃避潜伏期、原平台象限比、跨平台次数等为指标观察其行为学改变。结果PNS高、低剂量组在Morris水迷宫测试中,逃避潜伏期明显低于空白组;寻求次数、原平台象限比、跨平台次数明显增加,与空白组比较有显著性差异(P<0.05)。结论PNS对SAMP8学习记忆功能有明显改善作用。

关键词：三七总皂苷快速老化小鼠SAMP8 学习记忆 Morris水迷宫

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