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作 者:李晓宇[1] 王广基[1] 巫冠中[2] 谢海棠[1] 孙建国[1] 王旋[1]
机构地区:[1]中国药科大学药物代谢动力学重点实验室,江苏南京210038 [2]中国药科大学药理学教研室,江苏南京210038
出 处:《中国药理学通报》2006年第6期698-701,共4页Chinese Pharmacological Bulletin
基 金:国家高技术研究发展计划(863计划)基金资助项目(No2003AA2Z347A);江苏省药物代谢动力学重点实验室资助项目(NoBM2001201)
摘 要:目的建立测定化合物G004血浆药物浓度的液相色谱-电喷雾离子-质谱联用(LC-ESI-MS)的分析方法,探讨其在大鼠体内的药代动力学和绝对生物利用度研究中的应用.方法 SD大鼠ig和iv化合物G004,剂量分别为5.0和2.5 mg·kg-1,给药后不同时间点取血,分离血浆,LC-ESI-MS法测定血浆中化合物G004的药物浓度,用DAS软件计算其药代动力学参数,求算化合物G004在大鼠体内的绝对生物利用度.结果化合物G004在0.02~ 5.0 mg·L^-1浓度范围内线性关系良好(r^2=0.9995),样品在血浆中的提取回收率大于87%,批内和批间的RSD均小于15%.大鼠iv 2.5 mg·kg^-1化合物G004后主要药代动力学参数T(1)/(2)、CLs、Vd、AUC(0-∞)分别为(1.91±0.65) h、(0.36±0.22) L·h^-1、(0.78±0.36) L·kg^-1、(9.52±3.53) mg·L^-1·h^-1;大鼠ig 5.0 mg·kg^-1化合物G004后主要药代动力学参数Tmax、Cmax、T(1)/(2)、AUC(0-∞)、MRT(0-12h)分别为0.83 h、(3.33±0.80) mg·L^-1、(1.77±0.21) h、(10.04±2.43) mg·L^-1·h^-1和(2.75±0.31) h.经过剂量校正后求得的化合物G004在大鼠体内的绝对生物利用度为52.69%.结论该法专属性强,灵敏度高,可用于化合物G004的体内定量分析.Aim To establish an analytical method for determination of compound G004 concentration in plasma and investigate its application to pharmacokinetics and absolute bioavailability in rats. Methods 5.0 and 2.5 mg . kg^-1 compound G004 were given via ig and iv respectively to SD rats. Blood samples were collected at various time points after administration. Plasma concentration of compound G004 in rats was determined by LC-ESI-MS. Pharmacokinetic parameters were calculated by DAS program and absolute bioavailability was also calculated. Results The method was linear over the range of 0.02 -5 mg . L^-1 (r^2 = 0. 9995 ). The recovery of compound G004 in rat plasma was more then 87%. Intra- and inter-day precision, expressed as the relative standard deviation (RSD) was less than 15%. After iv compound G004,the main pharmacokinetic parameters T1/2, CLs, Vd, AUC(0-∞ were (1.91±0.65) h,(0.36±0.22) L. h^-1,(0.78±0.36) L . kg^-1,(9.52±3.53) mg.L^-1 . h^-1 respectively. The major pharmacokinetic parameters T Cmax, T1/2, AUC(0-∞), MRT(0-12h) were 0.83 h,(3.33±0.80) mg. L^-1,(1.77±0.21) h, (10.04±2.43) mg. L^-1 . h^-1 and (2.75 ±0.31)h after ig compound G004. The absolute bioavailability was 52.69% after correction of dosage. Conclusion The method is sensitive and specific which is applicable to pharmacokinetic analysis of compound G004 in rats.
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