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中国临床药理学与治疗学 ›› 2011, Vol. 16 ›› Issue (7): 736-739.

• 基础研究 • 上一篇    下一篇

糖原磷酸化酶抑制剂积雪草酸对糖代谢的影响

柳军1, 毛利飞1, 尚靖1, 孙宏斌2, 张陆勇1   

  1. 1中国药科大学新药筛选中心,
    2中国药科大学新药研究中心,南京 210009,江苏
  • 收稿日期:2011-04-06 修回日期:2011-07-06 出版日期:2011-07-26 发布日期:2011-09-22
  • 通讯作者: 张陆勇,男,研究员,博士生导师,研究方向:药物筛选和分子药理学。Tel: 025-83271500 E-mail: drugscreen@126.com
  • 作者简介:柳军,女,副研究员,研究方向:药物筛选和代谢相关疾病药物研究。Tel: 025-83271043 E-mail: junincpu@yahoo.com
  • 基金资助:
    教育部中央高校基本科研业务费专项资金(JKP2009002)

Effects of asiatic acid as a novel glycogen phosphorylase inhibitor on glucose metabolism

LIU Jun1, MAO Li-fei1, SHANG Jing1, SUN Hong-bin2, ZHANG Lu-yong1   

  1. 1New Drug Screening Center, China Pharmaceutical University,
    2Center of Drug Discovery, China Pharmaceutical University,Nanjing 210009,Jiangsu,China
  • Received:2011-04-06 Revised:2011-07-06 Online:2011-07-26 Published:2011-09-22

摘要: 目的: 研究积雪草酸(AA)对糖原磷酸化酶的抑制作用及其对HepG2细胞的葡萄糖消耗作用,最后研究其对小鼠糖代谢的影响,初步探讨其降糖机制。方法: 体外检测AA对糖原磷酸化酶抑制作用和对HepG2细胞培养基中的葡萄糖消耗水平的影响。体内小鼠实验,采用灌胃AA 7 d,以皮下注射肾上腺素造成高血糖模型,并与正常组一起测定静脉血糖和肝糖原含量。结果: AA具有抑制糖原磷酸化酶活性,其IC50为 12.1 μmol/L,AA能增加HepG2细胞对培养基中葡萄糖的消耗,并且可显著拮抗肾上腺素引起的血糖升高,对抗肾上腺素引起的肝糖原降解。结论: AA具有降血糖作用,机制与其抑制肝糖原分解有关。

关键词: 积雪草酸, 糖原磷酸化酶, 肾上腺素, 肝糖原, 降血糖

Abstract: AIM: To determine the effects of asiatic acid, a novel glycogen phosphorylase inhibitor, on glucose consumption in HepG2 cell and on blood glucose and hepatic glycogen in mice,and study the hypoglycemic mechanism.METHODS: Mice were given intragastrically either vehicle or asiatic acid for 7 days.The model of hyperglycemia in mice was induced by subcutaneous injection of Adrenaline; the fasting plasma glucose and hepatic glycogen of mice were measured.RESULTS: The elevation of blood glucose level caused by Adrenaline was antagonized by asiatic acid significantly. Asiatic acid also increased the hepatic glycogen content in adrenaline-induced hyperglycemia mice.Furthermore,Asiatic acid showed significant effect on glucose consumption in HepG2 cells, and its IC50 of inhibiting glycogen phosphorylase was 12.1 μmol/L in vivo.CONCLUSION: Asiatic acid presents anti-diabetic effect, the mechanism is probably concerned with inhibiting excessive hepatic glycogen degradation.

Key words: Asiatic acid, Glycogen phosphorylase, Adrenaline, Hepatic glycogen, Hypoglycemic effect

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