UPLC-MS/MS法同时测定糖尿病模型大鼠血浆中沙格列汀及其代谢产物5-羟基沙格列汀浓度
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篇名: UPLC-MS/MS法同时测定糖尿病模型大鼠血浆中沙格列汀及其代谢产物5-羟基沙格列汀浓度
TITLE:
摘要: 目的:建立同时测定糖尿病模型大鼠体内沙格列汀及其代谢产物5-羟基沙格列汀血药浓度的方法。方法:采用超高效液相色谱-串联质谱法。色谱柱为Waters BEH Shield RP18,流动相为10 mmol/L乙酸铵-乙腈(70 ∶ 30,V/V),流速为0.3 mL/min,柱温为30 ℃,进样量为10 μL;扫描模式为多反应监测,正离子模式,各离子对为m/z 316.2→180.2(沙格列汀)、m/z 332.3→196.2(5-羟基沙格列汀)、m/z 304.2→153.9(维格列汀,内标)。取6只SD大鼠,复制糖尿病模型后,ig沙格列汀0.53 mg/kg,于给药前及给药后0.25、0.5、0.75、1.0、1.5、2.0、4.0、6.0、8.0、12.0、24.0 h经眼眶取血0.25 mL,测定血浆中沙格列汀及其代谢物5-羟基沙格列汀的浓度,采用Win Nonlin 6.1软件计算药动学参数。结果:沙格列汀和5-羟基沙格列汀的质量浓度线性范围为0.1~100(r=0.997 2)、0.2~200 ng/mL(r=0.996 5),定量限分别为0.1、0.2 ng/mL,日内(n=5)、日间(n=3)RSD均小于12%,准确度为94.1%~105.4%、91.0%~103.6%,提取回收率分别为72.4%~87.3%、107.0%~115.3%(RSD均小于13.6%,n=6),基质效应分别为105.9%~107.8%、83.5%~88.2%(RSD均小于10.3%,n=6),稳定性的RSD≤11.0%(n=5);药动学参数cmax分别为(49.97±11.14)、(16.87±7.35) ng/mL,t1/2分别为(2.88±0.21)、(4.21±0.95) h,AUC0-24 h分别为(90.95±7.06)、(49.13±5.33) ng·h/mL(n=6)。结论:本方法简便、准确、专属性强,适用于沙格列汀及其代谢物5-羟基沙格列汀在大鼠体内的药动学研究。
ABSTRACT: OBJECTIVE: To establish a method for the simultaneous concentration determination of saxagliptin and its metabolite 5-hydroxy saxagliptin in diabetic model rats in vivo. METHODS: UPLC-MS/MS was performed on the column of Waters BEH Shield RP18 with mobile phase of 10 mmol/L ammonium acetate-acetonitrile (70 ∶ 30, V/V) at a flow rate of 0.3 mL/min, column temperature was 30 ℃, and injection volume was 10 μL. Scanning mode was multi-reactive monitoring with positive ion mode, and each ion pair was m/z 316.2→180.2 (saxagliptin), m/z 332.3→196.2 (5-hydroxy saxagliptin) and m/z 304.2→153.9 (vildagliptin, internal standard). 6 SD rats were selected and intragastric administred saxagliptin 0.53 mg/kg after inducing diabetic models. Blood sample 0.25 mL was taken from eyes before administration and after 0.25, 0.5, 0.75, 1.0, 1.5, 2.0, 4.0, 6.0, 8.0, 12.0, 24.0 h of administration. Plasma concentration of saxagliptin and its metabolite 5-hydroxy saxagliptin were determined, and Win Nonlin 6.1 software was used to calculate the pharmacokinetic parameters. RESULTS: The mass concentration of saxagliptin and 5-hydroxy saxagliptin ranged in 0.1-100, 0.2-200 ng/mL(r=0.997 2, 0.996 5); limits of quantitation were 0.1, 0.2 ng/mL; inter-day and intra-day RSDs were less than 12% (n=5, 3); accuracy was 94.1%-105.4%, 91.0%-103.6%; extraction recoveries were 72.4%- 87.3%, 107.0%-115.3% (RSD<13.6%, n=6); matrix effects were 105.9%-107.8%, 83.5%-88.2% (RSD<10.3%, n=6);RSD of stability was less than 11.0%(n=5), respectively; and pharmacokinetic parameters as cmax were (49.97±11.14), (16.87±7.35) ng/mL, t1/2 were (2.88±0.21), (4.21±0.95) h, AUC0-24 h were (90.95±7.06), (49.13±5.33) ng·h/mL (n=6). CONCLUSIONS: The method is simple, accurate, specific, and suitable for the pharmacokinetics research of saxagliptin and its metabolite 5-hydroxy saxagliptin in diabetic rats in vivo.
期刊: 2017年第28卷第16期
作者: 倪善红,汤道权,董洁,肖冰心,刘云,李艳丽,孙增先
AUTHORS: NI Shanhong,TANG Daoquan,DONG Jie,XIAO Bingxin,LIU Yun,LI Yanli,SUN Zengxian
关键字: 沙格列汀;5-羟基沙格列汀;血药浓度;药动学;大鼠;超高效液相色谱-串联质谱法
KEYWORDS: Saxagliptin; 5-hydroxy saxagliptin; Plasma concentration; Pharmacokinetics; Rat; UPLC-MS/MS
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