摘要
以气相色谱法测定大鼠血清、脑组织中冰片浓度,把脑组织当作一个相对独立的系统,用PHARMFIT和PCNONLIN软件对冰片的体内过程进行动力学分析,探讨、比较冰片在脑内和血清中的药代动力学特征。研究结果表明,冰片在胃肠道吸收迅速,极易透过血脑屏障进入脑组织,冰片在脑内浓度与血清浓度有较高的比值,且冰片的脑内分布相半衰期是血清的三倍,但脑组织和血清冰片的消除速率常数相近,表现力冰片在脑组织和血清中的浓度同时平行下降,因此不会有冰片在脑内蓄积现象产生。
The concentrations of borneol in the serum and brain tissue of rats were determined by gas chromatography. Using brain tissue as a relatively independent system, PHARMFIT and PCNONLIN softwares are applied for the kinetic analysis of the infracorporal process of borneol in order to find out and compare the pharmacokinetic characteristics of borneol in the brain and serum. The results showed that borneol was absorbed very rapidly in the gastrointestinal tract and readily permeates the blood-brain barrier into brain tissue. There was a higher specific value of borneol concentration in the brain and serum. Moreover, the half life of distribution phase of borneol in the brain was three times higher than that in the serum. But the constants of elimination rate of borneol in the brain and serum decreased simultaneously and parallelly, hence the accumulation of borneol in brain will not be found.
出处
《中药新药与临床药理》
CAS
CSCD
1993年第4期38-40,共3页
Traditional Chinese Drug Research and Clinical Pharmacology
关键词
冰片
药代动力学
脑
血液
大鼠
气相色谱分析法
BORNEOLUM SYNTHETICUM/pharmacokinetics BORNEOLUM, SYNTHETICUM/blood BRAIN/metabolism CHROMATOGRAPHY, GAS/methods RATS
