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中国临床药理学与治疗学 ›› 2003, Vol. 8 ›› Issue (2): 143-145.

• 研究原著 • 上一篇    下一篇

甘露醇诱导大鼠血脑屏障开放的影响因素分析

时小燕, 吴勇杰   

  1. 兰州医学院药理学教研室, 兰州 730000, 甘肃
  • 收稿日期:2002-09-20 修回日期:2002-10-11 出版日期:2003-04-26 发布日期:2020-11-25
  • 通讯作者: 时小燕, 女, 硕士。Tel:0931-8623573 E-mail:lywyj@public.lz.gs.cn
  • 作者简介:吴勇杰, 男, 教授, 硕士生导师, 研究方向:生物技术药品临床前研究。

Analysis of factors influencing mannitol to induce blood-brain-barrier opening

SHI Xiao-Yan, WU Yong-Jie   

  1. Department of Pharmacology, Lanzhou Medical College, Lanzhou 730000, Ganshu
  • Received:2002-09-20 Revised:2002-10-11 Online:2003-04-26 Published:2020-11-25

摘要: 目的: 研究动脉内输入甘露醇诱导血脑屏障(blood-brain barrier, BBB) 开放的影响因素。方法: 经大鼠颈外动脉插管将不同浓度甘露醇(20%和25%) 以不同速度和不同时间用微量输液泵输入大鼠的颈内动脉, 考察在输入25%甘露醇后不同保留时间(0、2、4、6、8 min) 注入伊文思蓝时显示的BBB 开放最佳时间点;考察输入甘露醇的浓度、输入速度和时间变化对甘露醇诱导BBB 开放的影响;并按性别和体重分别统计死亡率, 观察性别和体重对大鼠输入甘露醇耐受性的影响。结果: 以0.12 ml·s-1, 30 s输入25%甘露醇3.6 ml 后2 min 时BBB 开放程度最好, 20%甘露醇几乎无开放BBB 的作用, 输入25%甘露醇的速度减慢或输入时间缩短将降低BBB的开放程度。体重影响大鼠对甘露醇的耐受性, 体重较大时耐受性较高。结论: 影响甘露醇诱导BBB开放的因素有:甘露醇的浓度、输入甘露醇的速度和时间及输入甘露醇后的保留时间。对输入甘露醇的耐受性与动物的体重有关而和性别无关。

关键词: 药理学, 甘露醇, 血脑屏障, 大鼠

Abstract: AIM: To study factors influencing mannitol to induce blood-brain barrieropening. METHODS: By constant flow pump, mannitol with different concentrationwas infused into left internal carotid artery of adult Wistar rats via their left external carotid artery at different speed, time.Firstly, after mannitol with a concentration of25%was transfused, the optimal open time of BBB was investigated using Evans blue as an indicator by injection at different time.Then influences of concentration of mannitol, speed of infusion, change of time on mannitol to induce BBB opening were studied. Finally, death rate was counted according to sex, body weight in order to observe the influence of sex, body weight on tolerance of rats. RESULTS: The open degree of BBB was optimal after2min when3.6ml mannitol with a concentration of25%was infused in30s at a speed of0.12ml·s,.However, mannitol with a concentration of20% did not almost have any effect on opening of BBB.Slowing of infusion speed or shortening of infusion time of mannitol reduced opening degree of BBB.Body weight affected rat tolerance to mannitol, the tolerance of the rat was higher in those with higher weight. CONCLUSION: The factors influencing mannitol to induce BBB opening are as follows:concentration, infusion speed, keeping time of mannitol.And the tolerance to mannitol is not concerned with the sex of the rats, but the body weight of the rats

Key words: pharmacology, mannitol, blood-brain barrier, rat

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