高效液相色谱法测定血浆缬沙坦浓度  

Determination of valsartan in human plasma by HPLC

作　　者：徐燕丰[1] 曹文[1] 林欣[2] 凌树森[1] 

机构地区：[1]第二军医大学南京临床学院临床药理科,南京210002 [2]南京军区南京总医院心血管内科,南京210002

出　　处：《中国药理学通报》2002年第5期586-588,共3页Chinese Pharmacological Bulletin

基　　金：国家自然科学基金资助 No 3 9970 863

摘　　要：目的　建立一种高效液相色谱法以测定血浆中缬沙坦浓度。方法　色谱柱 :LichrospherC18高效液相柱 ;流动相 :0 0 1mol·L-1磷酸二氢钾缓冲液 (pH 3 1)∶乙腈 =5 3∶4 7(V/V) ,流量 1 0ml·min-1;检测器 :荧光检测 ,激发波长2 6 5nm ,发射波长 378nm。血浆样品经盐酸酸化 ,乙酸乙酯萃取 ,分离有机相 ,氮气吹干 ,流动相溶解后进样。结果　缬沙坦保留时间为 12 5min ,分离良好 ;标准曲线在 5 9～2 36 0 μg·L-1范围内呈线性 ;日间RSD为 5 94 %～ 8 4 1% ,日内RSD为 2 83%～ 7 0 7% ,回收率为 81 13%± 5 2 6 %。选择住院高血压病人 15例 ,每日口服缬沙坦胶囊 80mg ,分别于第 4、7d测定其稳态峰、谷浓度 ,谷浓度为 (16 5 99±6 0 2 2 ) μg·L-1,峰浓度为 (5 2 6 90± 337 0 6 ) μg·L-1。结论　该法灵敏、简便 。AIM To establish a high performance liquid chromatographic method (HPLC) to determine the concentration of valsartan in human plasma. METHODS Separation was achieved on the lichrospher C 18 column. The mobile phaseconsisted of pH 3 1 phosphate buffer acetonitrile (53∶47, V/V) was used at a flow rate of 1 0 ml·min -1 . The fluorimetric excitation and emission wavelengths were set at 265 nm and 378 nm, respectively. The plasma samples were acidified with HCl, extracted with ethyl acetate. Separate the organic phase, remove the solvent and then residue was dissolved in mobile phase. RESULTS The retention time of valsartan was 12 5 min. The calibration curves were linear in the range of 5 9～ 2 360 μg·L -1 . The precision values (RSD) of intra day and inter day were determined to be 2 83%～7 07% and 1 57%～8 41% respectively. The absolute recovery rate were 80 30%±5 13%. The method was applied to determine the peak and valley concentrations in plasma of the hypertensive treated with 80mg valsartan per day. CONCLUSION The assay was sensitive and simple. It is suitable for the study of the pharmacokinetics of valsartan.

关 键 词：缬沙坦 高效液相色谱法 血药浓度监测 血浆 高血压病人 药物效应 

分 类 号：R544.1[医药卫生—心血管疾病] R446.[医药卫生—内科学]