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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (5): 545-549.

• 研究原著 • 上一篇    下一篇

复方地黄提取物对链脲佐菌素诱导的糖尿病大鼠肠系膜动脉舒张功能的改善作用

刘浩然, 夏绘晶, 戴德哉   

  1. 中国药科大学药理研究室, 南京 210009, 江苏
  • 收稿日期:2006-02-21 修回日期:2006-03-27 出版日期:2006-05-26 发布日期:2020-12-09
  • 通讯作者: 戴德哉, 男, 教授, 博士生导师, 研究方向:心血管药理学。 Tel:025-83271270  E-mail:dezaidai@vip.sina.com
  • 作者简介:刘浩然, 男, 博士研究生, 研究方向:心血管药理学。 Tel:025-83271453  E-mail:frucose @126.com
  • 基金资助:
    国家自然科学基金面上资助项目(No30572193)

Effect of three extracts of Fufang Dihuang decoction on relaxation of mes-entery artery in streptozotocin-induced diabetic rats

LIU Hao-ran, XIA Hui-jing, DAI De-zai   

  1. Department of Phamacology, China Phamaceutical University, Nanjing 210009, Jiangsu, China
  • Received:2006-02-21 Revised:2006-03-27 Online:2006-05-26 Published:2020-12-09

摘要: 目的: 观察复方地黄三种不同提取物对链脲 佐菌素(STZ) 诱导的糖尿病(DM) 大鼠肠系膜动脉舒 张功能的影响。 方法: 以 STZ(60 mg·kg-1, i.p) 诱 导糖尿病大鼠模型, 30 d 后分别用复方地黄95%乙 醇提取物 (107.8 mg·kg-1), 70% 乙 醇 提 取 物 (154.7 mg·kg-1), 水提取物(56.8 mg·kg-1) i.g 治 疗, 每天 1次, 连续 30 d, 60 d 后分别记录在 L-精氨 酸(L-Arg), L-硝基精氨酸(L-NOArg, NLA) 及吲哚 美辛(indomethacin, Ind) 存在或不存在时大鼠肠系膜 血管舒张功能。结果: 与正常组相比, 模型组大鼠肠 系膜动脉舒张反应减弱;NO 基础释放较正常组的 36.2%,NO 诱导释放为正常组的 22.3%, NO 在内皮依赖性舒张中的比例为正常组的 32.9%;95%、 70%乙醇 提 取物 组 NO 基础释放为正常组的 62.0%、79.7%;NO 诱导释放为正常组的 51.4%、 72.4%;NO 在内皮依赖性舒张的比例为正常组的 59.4%、79.2%。水提取物效果不明显。结论: 糖尿 病模型大鼠肠系膜动脉舒张功能异常, 主要由 NO 介导;复方地黄提取物能够保护内皮细胞损伤, 改善血管内皮细胞功能。

关键词: 复方地黄提取物, 糖尿病, 肠系膜动脉, 一氧化氮, 链脲佐菌素

Abstract: AIM: To investigate the effects of three extracts of Fufang Dihuang decoction on the relaxation of mesentery artery in streptozotocin(STZ)-induced diabetic rats.METHODS: Diabetic rat model was induced by i. p injection STZ at a dosage of 60 mg·kg-1.30 d later, 95%ethanol, 70%ethanol or water extract of Radix Re-hmanniae was p.o administrated for 30 d at the dosage of 107.8, 154.7 and 56.8 mg·kg-1, respectively.On the 60th day, the responses of mesentery artery were deter-mined in the absence or presence of L-argine (L-Arg), N-Nitro-L-argine (NLA) and Indomethacin (Ind).RESULTS: The relaxation of mesentery artery of diabetic rat was diminished compared with the normal control.The basal release of NO and the L-argine-induced release of NO decreased 64.6%, 77.6% respectively in diabetic group compared with the normal control, with the de-creased proportion of NO in the endothelium dependent relaxation.95% and 70 %ethanol extract of Fufang Di-huang decoction ameliorated the impaired release of NO in rat' s mesentery artery.CONCLUSION: Abnormal re-laxation of mesentery artery in diabetic rat may be due to the decreased releasing of NO.The extracts of Fufang Di-huang decoction can protect the endothelium cells and im-prove the relaxation of mesentery artery, among them 70%ethanol extract exert the best potency, followed by 95%ethanol extract.And the water extract has a poor ef-fect.

Key words: Fufang Dihuang decoction, diabetic mellitus, mesentery artery, nitric oxide, streptozotocin

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