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液质联用测定Beagle犬血浆N-去二甲基西布曲明浓度及其药动学

Determination of N-di-desmethyl sibutramine and its pharmacokinetics in Beagle dog plasma by HPLC-MS method
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摘要 目的建立液相色谱-质谱(LC-MS)法测定Beagle犬血浆N-去二甲基西布曲明浓度,并用于药动学研究。方法6条Beagle犬随机分成2组,采用自身对照交叉实验设计,分别单次口服盐酸西布曲明胶囊(参比制剂)和自制盐酸西布曲明固体分散体(受试制剂)各2.5 mg,以地西泮为内标,采用Phenomenex-Lunal00-3 C_(18)色谱柱,流动相为甲醇-4 mmol·L^(-1)乙酸铵-甲酸(70.5:29:0.5,V:V:V),电喷雾正离子选择反应监测,测定血药浓度。结果受试制剂与参比制剂的代谢物N-去二甲基西布曲明的c_(max)分别为(7.8±s 1.2)和(7.4±1.3)μg·L^(-1),t_(max)分别为(4.2±0.9)和(4.6±0.8)h,t_(1/2)分别为(21±3)和(20.1±2.7)h,AUC_(0~∞)分别为(179±46)和(169±43)μg·h·L^(-1),与参比制剂相比受试制剂的相对生物利用度为(105±14)%。结论该方法快速、准确,适用于N-去二甲基盐酸西布曲明在Beagle犬体内的药动学研究,主要药动学参数经方差分析和双向单侧t检验证明,2种制剂生物等效。 AIM To establish a HPLC-MS method for the determination of N-di-desmethyl sibutramine in Beagle dog plasma and to study its pharmacokinetics. METHODS The self-crossover design was conducted in 6 Beagle dogs. A single dose of sibutramine hydrochloride commercial capsule (reference preparation) 2.5 mg and (SRM) mode by LC-MS. RESULTS The main sibutramine) of the trial and reference preparation t (4.2 ± 0.9) and (4.6 ± 0.8) h, t,/2 (21 ± 43) μg·h·L-1. The relative bioavailability of the method is simple, accurate and applicable for pharmacokinetic parameters of were as follows: cmax (7.8 ± s 1. 3) and (20.1 ± 2.7) h, AUCo metabolites ( N-di-desmethyl 2) and (7.4 ± 1.3) μg· L-1, (179± 46) and (169 ± trial preparation was (105 ± 14) %. CONCLUSION This the determination of N-di-desmethyl sibutramine and the pharmacokinetic study. The results of the statistical analysis and two one-side t test show that the two preparations are bioequivalent.
出处 《中国新药与临床杂志》 CAS CSCD 北大核心 2008年第12期894-898,共5页 Chinese Journal of New Drugs and Clinical Remedies
关键词 西布曲明 N-去二甲基西布曲明 药动学 色谱法 高压液相 光谱法 质量 电喷雾电离 sibutramine N-di-desmethyl sibutramine pharmacokinetics chromatography, high pressure liquid spectrometry, mass, electrospray ionization
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