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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2018, Vol. 23 ›› Issue (7): 790-795.doi: 10.12092/j.issn.1009-2501.2018.07.011

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Determination of apatinib in tumor patients' plasma by liquid chromatography tandem mass spectrometry and its application

LI Li1, LI He2, LIU Xing'e3, WEI Nan3   

  1. 1 Institute of Clinical Pharmacy, Zhejiang Hospital, 2 Drug Clinical Trial Institution, Zhejiang Hospital, 3 Oncology Department of Zhejiang Hospital,Hangzhou 310013, Zhejiang, China
  • Received:2018-03-26 Revised:2018-04-27 Online:2018-07-26 Published:2018-07-20

Abstract:

AIM: To establish a rapid, accurate liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the determination of apatinib in tumor patients and apply this method to analyze the clinical samples. METHODS: Sorafenib was employed as the internal standard. The analyte and internal standard were extracted from plasma by protein precipitation with acetonitrile and separated on Eclipse Plus C18 column (2.1 mm×100 mm, 3.5 μm) , mobile phase consisted of acetonitrile-10 mmol/L ammonium acetate (85∶15, V/V, containing 0.1% formic acid) at the flow rate of 0.25 mL/min. Electrospray ionization (ESI) source was applied and operated in the positive multiple reaction monitoring (MRM) mode.The MS/MS ion transitions monitored were m/z 398.1→m/z 212.0 and m/z 465.3→m/z 270.1 for apatinib and internal standard, respectively. After methodology validation, this method was applied for the clinical analysis of apatinib in plasma from tumor patients.RESULTS:Chromatograms showed no endogenous interfering peaks with blank samples. The standard curves were demonstrated to be liner in the range of 2.0-2 000 μg/L (r=0.996 8). The RSD of inter-day (n=5) and intra-day (n=3) for four different concentration levels were less than 15%, The average recoveries were between 78.0% and 87.8%.The internal standard normalized matrix effect 92.4% and 107.3%. CONCLUSION: The method is specific, sensitive and suitable for clinical determination of apatinib in tumor patients plasma efficiently.

Key words: apatinib, LC-MS/MS, plasma concentration, pharmacokinetics

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