左羟丙哌嗪的大鼠在体肠吸收特性
Study on the intestinal absorption characterization of Levodropropizine in rats
作者:呙临松;李铜铃;贾毅敏;李锐媛;
Author:
收稿日期: 年卷(期)页码:2008,(03):-283-285
期刊名称:华西药学杂志
Journal Name:WEST CHINA JOURNAL OF PHARMACEUTICAL SCIENCES
关键字:左羟丙哌嗪;吸收特性;HPLC;肠吸收;被动转运
Key words:
基金项目:
中文摘要
目的研究左羟丙哌嗪大鼠的在体肠吸收特性。方法采用大鼠在体小肠循环灌注模型,用HPLC同时测定灌注液中酚红和左羟丙哌嗪的含量。结果左羟丙哌嗪12.8~80.0μg.ml-1与小肠吸收量呈线性关系,吸收速率常数Ka几乎不变;各肠道间Ka值无显著性差异(P>0.05),十二指肠、空肠、回肠和结肠的Ka值分别为0.039±0.004、0.042±0.010、0.037±0.003、0.034±0.004 h-1。结论左羟丙哌嗪浓度12.8~80.0μg.ml-1在小肠段的吸收呈一级动力学过程,吸收机制为被动扩散,主要吸收部位在小肠段,且无特定的吸收窗。
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