Pharmacokinetic Study of Ginkgolide B in Dog After Intravenous Administration

IF 1.8 4区 医学 Q4 BIOCHEMICAL RESEARCH METHODS
Li Li, Dan Yu, Wen-Fei Sun, Qi-Zhong Jin, Xing-Jie Chang, Qian Shi
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Abstract

Ginkgolide B (GB) is the main active ginkgolide in Ginkgo biloba leaves extract. Pharmacological study suggested that GB exhibits protective effect on nervous system impaired and can be used in the treatment of dementia, cerebral insufficiency or related cognitive decline. However, the information on pharmacokinetics of GB in vivo was limited. In this study, a sensitive LC–MS/MS analytical method was developed to accurately determinate the concentration of GB in dog plasma and applied to the pharmacokinetic study of GB in dogs after bolus injection of GB. A portion of 100 μL dog plasma was pretreated by liquid–liquid extraction using 1 mL of ethyl acetate. The GB and IS were separated on a Waters ACQUITY HSS T3 column using acetonitrile and water containing 0.1% formic acid as mobile phase, at a flow rate of 0.4 mL/min. Multiple-reaction monitoring (MRM) mode was used for quantitative analysis of GB and tolbutamide (internal standard) in negative electrospray ionization. GB showed excellent linearity with correlation coefficient >  0.99 over the concentration range of 1–5000 ng/mL. The intra and interday RSD% were less than 7.4%, while the RE% ranged from −6.1% to 9.6%. The mean extraction recovery was >  83.1%. The validated method was further successfully applied to pharmacokinetic study of GB in dog plasma. Dose-proportional pharmacokinetics of GB were observed after bolus injection administration in dogs. This comprehensive study of the pharmacokinetics of GB in dogs will provide useful information for its further development in clinic.

静脉给药后银杏内酯B在犬体内的药动学研究。
银杏内酯B (GB)是银杏叶提取物中主要的活性银杏内酯。药理研究表明,黄芪多糖对神经系统损伤具有保护作用,可用于治疗痴呆、脑供血不足或相关认知能力下降。然而,关于其体内药代动力学的研究资料有限。本研究建立了一种灵敏的LC-MS/MS分析方法,可准确测定犬血浆中GB的浓度,并应用于犬体内大剂量注射GB后的药代动力学研究。取一部分100 μL犬血浆,用1 mL乙酸乙酯进行液液萃取预处理。色谱柱为Waters ACQUITY HSS T3,流动相为乙腈和含0.1%甲酸的水,流速为0.4 mL/min。采用多反应监测(MRM)模式对GB和甲苯丁酰胺(内标)进行负电喷雾电离定量分析。在1 ~ 5000 ng/mL的浓度范围内,GB呈良好的线性关系,相关系数为>.99。日内和盘间RSD%均小于7.4%,RE%介于-6.1% ~ 9.6%之间。平均萃取回收率为83.1%。该方法进一步成功应用于GB在犬血浆中的药动学研究。观察大剂量给药后GB在犬体内的剂量比例药代动力学。本研究将为其在犬体内的进一步开发提供有益的信息。
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来源期刊
Biomedical Chromatography
Biomedical Chromatography 生物-分析化学
CiteScore
3.60
自引率
5.60%
发文量
268
审稿时长
2.3 months
期刊介绍: Biomedical Chromatography is devoted to the publication of original papers on the applications of chromatography and allied techniques in the biological and medical sciences. Research papers and review articles cover the methods and techniques relevant to the separation, identification and determination of substances in biochemistry, biotechnology, molecular biology, cell biology, clinical chemistry, pharmacology and related disciplines. These include the analysis of body fluids, cells and tissues, purification of biologically important compounds, pharmaco-kinetics and sequencing methods using HPLC, GC, HPLC-MS, TLC, paper chromatography, affinity chromatography, gel filtration, electrophoresis and related techniques.
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