食品科学 ›› 2010, Vol. 31 ›› Issue (3): 246-249.doi: 10.7506/spkx1002-6300-201003057

• 营养卫生 • 上一篇    下一篇

天麻多糖PGEB-3-H对东莨菪碱所致小鼠学习记忆障碍的影响

明 建1,2,曾凯芳1,2,吴素蕊4,付爱玲3,赵国华1,2,桂明英4,陈宗道1 , 2 ,*   

  1. 1.西南大学食品科学学院 2.重庆市特色食品工程技术研究中心 3.西南大学药学院 4.昆明食用菌研究所
  • 收稿日期:2009-05-21 出版日期:2010-02-01 发布日期:2010-12-29
  • 通讯作者: 明建 E-mail:mingjian1972@163.com
  • 基金资助:

    西南大学博士基金项目(SWU109005);云南省省校省院科技合作支持项目(2005YX24)

Effect of Soluble Polysaccharide PGEB-3-H from Gastrodia elata Blume on Scopolamine-induced Learning and Memory Disorders in Mice

MING Jian1,2,ZENG Kai-fang1,2,WU Su-rui4,FU Ai-ling3,ZHAO Guo-hua1,2,GUI Ming-ying4,CHEN Zong-dao1,2,*   

  1. 1. College of Food Science, Southwest University, Chongqing 400715, China;2. Chongqing Special Food Programme and
    Technology Research Center, Chongqing 400715, China;3. College of Pharmaceutical Sciences, Southwest University, Chongqing
    400715, China;4. Kunming Research Insitute of Edible Mushroom, Kunming 650223, China
  • Received:2009-05-21 Online:2010-02-01 Published:2010-12-29
  • Contact: MING Jian E-mail:mingjian1972@163.com

摘要:

目的:观察不同剂量的天麻水溶性多糖(PGEB-3-H)对东莨菪碱所致记忆损伤模型小鼠的学习记忆是否具有改善作用。方法:行为学采用Morris 水迷宫实验,测定小鼠脑组织乙酰胆碱(Ach)和丙二醛(MDA)含量,观察与模型组的差异。结果:与模型组(MC)相比,PGEB-3-H 低、中、高剂量组(100、200、400mg/kg bw·d)小鼠找到平台的时间(潜伏期)明显缩短,且高剂量组(400mg/kg bw·d)与MC组之间差异极显著(P < 0.01);高剂量组(400mg/kg bw·d)小鼠脑组织Ach 含量显著高于生理盐水组(NC)和阳性对照组(PC);中等剂量组(200mg/kg·d)小鼠脑组织MDA 含量显著降低。结论:PGEB-3-H 能改善东莨菪碱所致的记忆损伤小鼠学习记忆能力,其作用机理可能是通过提高脑组织Ach 含量。

关键词: 天麻, 多糖, 东莨菪碱, 学习记忆, Mor r i s 水迷宫, 乙酰胆碱

Abstract:

Objective: To investigate the effect of PGEB-3-H, a soluble polysaccharide from Gastrodia elata Blume, on scopolamine-induced learning and memory disorders in mice. Methods: Learning and memory ability in mice were evaluated by Morris water maze. Acetylcholine and malondialdehyde (MDA) content were measured in brain tissues of mice. Results: Compared with model group, the time for passing water maze of mice treated with PGEB-3-H at doses of 100, 200 mg/kg bw·d and 400 mg/kg bw·d (namely, PGEB-3-H low-, medium- and high-dose groups, respectively) was obviously shorter in a dosedependent mode, and there was an extremely significant difference between PGEB-3-H high-dose group and model group (P <0.01). Moreover, PGEB-3-H high-dose group exhibited higher acetylcholine content in brain tissues when compared to normal saline group or positive control group. In addition, MDA content in brain tissues of PGEB-3-H medium-dose group exhibited a significant decrease (P <0.05). Conclusion: PGEB-3-H can improve scopolamine-induced learning and memory disorders in mice, and its mechanism may be due to the increase of acetylcholine content in brain tissues.

Key words: Gastrodia elata Blume, polysaccharide, scopolamine, learning and memory, Morris water maze, acetylcholine

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