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Simple and rapid LC-MS/MS method for determination of sitagliptin in human plasma and application to bioequivalence study.
Journal of Chromatography B ( IF 3 ) Pub Date : 2020-08-27 , DOI: 10.1016/j.jchromb.2020.122337
Gabriel Onn Kit Loh 1 , Emily Yii Ling Wong 1 , Yvonne Tze Fung Tan 1 , Yi Lin Lee 2 , Lai Hui Pang 2 , May Chien Chin 2 , Nair Damenthi 2 , Kok Khiang Peh 3
Affiliation  

A simple, rapid, sensitive, and reproducible liquid chromatography-tandem mass spectrometry method was developed to determine sitagliptin in human plasma. Diphenhydramine HCl was used as internal standard (IS). The chromatographic separation was achieved using Agilent Poroshell 120 EC-C18 – Fast LC column (100 × 2.1mmID, 2.7) fitted with UHPLC Guard Poroshell 120 EC-C18 (5 × 2.1mmID, 2.7 µm). The mobile phase consisted of 0.1% v/v formic acid and methanol (45:55, v/v) run at a flow rate of 0.45 mL/min at 30 °C. Methanol produced relatively cleaner plasma sample as deproteinization agent. Polytetrafluoroethylene membrane was preferred over nylon membrane as the former produced clear plasma samples. The standard calibration curve was linear over the concentration range of 5–500.03 ng/mL. The within-run precision was 0.53–7.12% and accuracy 87.09–105.05%. The between-run precision was 4.74–11.68% and accuracy 95.02–97.36%. The extended run precision was 3.60–6.88% and accuracy 93.18–95.82%. The recovery of analyte and IS was consistent. Sitagliptin in plasma was stable at benchtop (short term) for 24 h, in autosampler tray for 48 h, in instrumentation room for 48 h (post-preparative), after 7 freeze-thaw cycles (−20 ± 10 °C), and 62 days in the freezer (−20 ± 10 °C). Both sitagliptin (analyte) and IS stock solutions were stable for 62 days when kept at room temperature (25 ± 4 °C) and in chiller (2–8 °C). The validated method was successfully applied to a bioequivalence study of two sitagliptin formulations involving 26 healthy Malaysian volunteers.



中文翻译:

简单快速的LC-MS / MS方法测定人血浆中西他列汀的含量及其在生物等效性研究中的应用。

建立了一种简单,快速,灵敏且可重现的液相色谱-串联质谱法来测定人血浆中的西他列汀。盐酸苯海拉明用作内标(IS)。使用配备UHPLC Guard Poroshell 120 EC-C18(5×2.1mmID,2.7 µm)的Agilent Poroshell 120 EC-C18 –快速液相色谱柱(100×2.1mmID,2.7)进行色谱分离。流动相由0.1%v / v甲酸和甲醇(45:55,v / v)组成,在30°C下以0.45 mL / min的流速运行。甲醇产生的血浆样品相对较干净,可以作为脱蛋白剂。聚四氟乙烯膜比尼龙膜更可取,因为前者可产生透明的血浆样品。在5–500.03 ng / mL的浓度范围内,标准校准曲线是线性的。批内精度为0.53-7.12%,精度为87.09-105。05%。批间精度为4.74-11.68%,精度为95.02-97.36%。扩展运行精度为3.60–6.88%,精度为93.18–95.82%。分析物和IS的回收率是一致的。经过7次冻融循环(-20±10°C)后,血浆中的西他列汀在台式(短期),在自动进样器托盘中,在仪器室中,在制备后室中,在自动进样器中,在仪器中放置48小时(制备后),在48小时内保持稳定。在冰箱中(62±10°C)放置62天。西他列汀(分析物)和IS储备溶液在室温(25±4°C)和冷却器(2-8°C)中保持稳定62天。验证的方法已成功应用于涉及26名马来西亚健康志愿者的两种西他列汀制剂的生物等效性研究。分析物和IS的回收率是一致的。经过7次冻融循环(-20±10°C)后,血浆中的西他列汀在台式(短期),在自动进样器托盘中,在仪器室中,在制备后室中,在自动进样器中,在仪器中放置48小时(制备后),在48小时内保持稳定。在冰箱中(62±10°C)放置62天。西他列汀(分析物)和IS储备溶液在室温(25±4°C)和冷却器(2-8°C)中保持稳定62天。验证的方法已成功应用于涉及26名马来西亚健康志愿者的两种西他列汀制剂的生物等效性研究。分析物和IS的回收率是一致的。经过7次冻融循环(-20±10°C)后,血浆中的西他列汀在台式(短期),在自动进样器托盘中,在仪器室中,在制备后室中,在自动进样器中,在仪器中放置48小时(制备后),在48小时内保持稳定。在冰箱中(62±10°C)放置62天。西他列汀(分析物)和IS储备溶液在室温(25±4°C)和冷却器(2-8°C)中保持稳定62天。验证的方法已成功应用于涉及26名马来西亚健康志愿者的两种西他列汀制剂的生物等效性研究。西他列汀(分析物)和IS储备溶液在室温(25±4°C)和冷却器(2-8°C)中保持稳定62天。验证的方法已成功应用于涉及26名马来西亚健康志愿者的两种西他列汀制剂的生物等效性研究。西他列汀(分析物)和IS储备溶液在室温(25±4°C)和冷却器(2-8°C)中保持稳定62天。验证的方法已成功应用于涉及26名马来西亚健康志愿者的两种西他列汀制剂的生物等效性研究。

更新日期:2020-09-07
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