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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (9): 1003-1005.

• 研究原著 • 上一篇    下一篇

HPLC-ECD 法测定大鼠脑微透析液中的多巴胺及其代谢产物

景富春1,2, 刘小莉1,2, 陈虹1,2   

  1. 1石河子大学药学院药理教研室, 石河子 832002 , 新疆;
    2石河子大学省部共建教育部新疆特种植物药资源重点实验室, 石河子 832002 , 新疆
  • 收稿日期:2006-07-18 修回日期:2006-08-17 出版日期:2006-09-26 发布日期:2020-11-05
  • 通讯作者: 陈虹,女, 药理学教授, 硕士生导师, 主要研究方向:心血管和神经药理。Tel:0993-2302286 E-mail:chenhong57@126.com
  • 作者简介:景富春, 男, 主治医师, 在读硕士研究生, 研究方向:心血管和神经药理。Tel:0993-2057093  E-mail:fleming7798@163.com
  • 基金资助:
    国家自然科学基金资助项目(No30560171)

Determination of dopamine and its metabolites in rat cerebral microdialysates by HPLC-ECD

JING Fu-chun1,2, LIU Xiao-li1,2, CHEN Hong1,2   

  1. 1Department of Pharmacology , College of Pharmacy , Shihezi University , Shihezi 832002 , Xinjiang , China;
    2Ministry of Education Key Laboratory of Xinjiang Phytomedicine Resources , Shihezi 832002 , Xinjiang , China
  • Received:2006-07-18 Revised:2006-08-17 Online:2006-09-26 Published:2020-11-05

摘要: 目的 建立应用常规高效液相-电化学法(HPLC-ECD)测定大鼠脑微透析液中多巴胺(DA)及其代谢产物3 , 4-二羟基苯乙酸(DOPAC)和高香草酸(HVA)的方法。方法 将探针插入大鼠右侧纹状体,在清醒自由活动状态下, 用Ringer 氏液以1.5 μl·min-1的速度灌流, 每20 min 收集1 管透析液, 将其注入HPLC-ECD , 考察本方法的专属性、线性范围、精密度和准确度等, 并对其中所含的DA 、DOPAC 、HVA 进行测定。结果 3 种物质在12.5 ~250 μg·L-1范围内线性关系良好, 高、中、低3 种浓度的回收率分别为98.33 %、102.67 %、92.33 %, 各物质的日内RSD 值分别为3.3 %、3.4 %、2.5 %;日间RSD 值为4.2 %、2.3 %、5.6 %。大鼠脑微透析液中的DOPAC 及DA 、HVA 的含量分别为1.79 ±0.07 、0.45 ±0.02 、1.67 ±0.05 μg·ml-1(n =6)。结论 本方法简便、准确、稳定, 可用于应用脑微透析技术进行的DA 相关疾病的基础研究。

关键词: 高效液相色谱, 脑微透析, 多巴胺, 代谢产物

Abstract: AIM: To developa sensitive and rapid determination method of dopamine (DA)and its metabolites 3 , 4-dihydroxyphenylacetic acid (DOPAC)and homovanillic acid (HVA)in rat cerebral microdialysates.METHODS: Microdialysis probes were placed into the right stratums of Wistar rat brains and perfused with Ringer's solution at a rate of 1.5 μl·min-1.A reverse phase HPLC with electrochemical detection (ECD)were used to assay DA , DOPAC and HVA after the cerebral microdialysates were collected every 20 minutes from awake , freely moving rats.In order to know the reliability of this method , selectivity , linear range , precision and accuracy were tested and the contents of DA , DOPAC and HVA in rat microdialysates were determined.RESULTS: The standard curve were in good linear at the range of 12.5 to 250 μg·L-1.The recovery rates of DOPAC , DA and HVA at the concentration of 0.05 , 0.13 , 0.25μg·L-1 were 98.33 %, 102.67 %, 92.33 % respectively.Their with-in day RSD were 3.3 %, 3.4 %, 2.5 % and between-day RSD 4.2 %, 2.3 %, 5.6 % respectively.The contents of DOPAC , DA and HVA in rat microdialysates were 1.79 ±0.07 , 0.45 ±0.02 , 1.67 ±0.05μg·ml-1 (n =6), respectively.CONCLUSION: The simple , accurate and stable method can be applied to the study of the basic researches of diseases related to DA by cerebral microdialysis in rat.

Key words: HPLC-ECD, microdialysis, dopamine, metabolites

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