芪雪浸膏剂中大黄素、大黄酸和毛蕊异黄酮在大鼠体内的药动学研究
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篇名: 芪雪浸膏剂中大黄素、大黄酸和毛蕊异黄酮在大鼠体内的药动学研究
TITLE:
摘要: 目的:建立大鼠血浆中大黄素、大黄酸和毛蕊异黄酮含量的测定方法,并研究大鼠体内芪雪浸膏剂的药动学。方法:采用液相色谱-质谱联用(LC-MS/MS)法。色谱柱为Thermo C18,流动相为乙腈-0.1%甲酸溶液(梯度洗脱),流速为0.2 mL/min,柱温为30 ℃,进样量为20 μL,定量离子为大黄素质荷比(m/z)269.7→226.1,大黄酸m/z 283.7→239.9,毛蕊异黄酮m/z 283.5→268.5,地西泮(内标物)m/z 285.0→154.1。6只大鼠灌胃芪雪浸膏剂8.91 g/kg(按临床用量换算而得)后0.08、0.17、0.25、0.5、0.75、1、2、4、6、8、12 h眼眶取血测定血药浓度。采用DAS 1.0药动学软件计算各药动学参数。结果:大黄素、大黄酸和毛蕊异黄酮质量浓度线性范围分别为1.988~198.8 ng/mL(r=0.998 8)、2~200 ng/mL(r=0.998 8)、2.092~209.2 ng/mL(r=0.998 5),精密度、准确度试验的RSD均小于7.78%(n=5),基质效应分别为92.13%~102.23%、90.15%~93.67%、90.33%~104.63%(n=5),稳定性试验的RSD均小于6.54%(n=3);3种成分在大鼠体内的t1/2分别为(1.95±0.53)、(3.55±1.25)、(4.21±1.14) h,AUC0-12 h分别为(192.67±40.58)、(93.67±20.26)、(608.41±108.36) μg·h/L,cmax分别为(89.56±12.87)、(31.84±10.58)、(300.56±50.57) μg/L,tmax分别为(0.50±0.00)、(0.75±0.23)、(1.00±0.00) h,CL分别为(5.45±1.12)、(2.09±0.47)、(10.01±1.25) L/(h·kg)(n=6)。结论:建立的方法灵敏度高、准确可靠,大黄素、大黄酸、毛蕊异黄酮在大鼠体内的消除过程为一级消除,且符合二室开放模型。
ABSTRACT: OBJECTIVE: To establish a method for the determination of emodin, rhein and calycosin in rat plasma, and to study pharmacokinetics of Qixue extract in rats. METHODS: LC-MS/MS method was adopted. The determination was performed on Thermo C18 column with mobile phase consisted of acetonitrile-0.1% formic acid solution (gradient elution), and flow rate of 0.2 mL/min. The column temperature was set at 30 ℃, and sample size was 20 μL. The quantitative ions were emodin m/z 269.7→226.1, rhein m/z 283.7→239.9, calycosin m/z 283.5→268.5 and diazepam m/z 285.0→154.1. The blood concentration of samples from orbital cavity of 6 rats were determined 0.08, 0.17, 0.25, 0.5, 0.75, 1, 2, 4, 6, 8, 12 h after intragastric administration of Qixue extract 8.91 g/kg (by clinical dosage). DAS 1.0 pharmacokinetic software was employed to calculate pharmacokinetic parameters. RESULTS: The linear ranges of emodin, rhein and calycosin were 1.988-198.8 ng/mL (r=0.998 8), 2-200 ng/mL (r=0.998 8) and 2.092-209.2 ng/mL(r=0.998 5), respectively. RSDs of precision and accuracy tests were all less than 7.78% (n=5). The recoveries were 92.13%-102.23%, 90.15%-93.67% and 90.33%-104.63% (n=5), respectively. RSDs of stability tests were all less than 6.54% (n=3). The pharmacokinetic parameters of emodin, rhein and calycosin were as follows as t1/2 were (1.95±0.53), (3.55±1.25), (4.21±1.14) h; AUC0-12 h were (192.67±40.58), (93.67±20.26), (608.41±108.36) μg·h/L; cmax were (89.56±12.87), (31.84±10.58), (300.56±50.57) μg/L; tmax were (0.50±0.00),(0.75±0.23),(1.00±0.00) h; CL were (5.45±1.12), (2.09±0.47), (10.01±1.25) L/(h·kg) (n=6), respectively. CONCLUSIONS: Established method is highly sensitive, accurate and reliable. The elimination process of emodin, rhein and calycosin are first-order elimination, which is in line with two-compartment model.
期刊: 2018年第29卷第21期
作者: 吴磊,居文政,戴国梁,陆超
AUTHORS: WU Lei,JU Wenzheng,DAI Guoliang,LU Chao
关键字: 芪雪浸膏剂;大黄素;大黄酸;毛蕊异黄酮;药动学;液相色谱-质谱联用;大鼠
KEYWORDS: Qixue extract; Emodin; Rhein; Calycosin; Pharmacokinetics; LC-MS/MS; Rats
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