A full validated hydrophilic interaction liquid chromatography-tandem mass spectrometric method for the quantification of oxaliplatin in human plasma ultrafiltrates

作者：Ito Hajime; Yamaguchi Hiroaki; Fujikawa Asuka; Tanaka Nobuaki; Furugen Ayako; Miyamori Kazuaki; Takahashi Natsuko; Ogura Jiro; Kobayashi Masaki; Yamada Takehiro; Mano Nariyasu; Iseki Ken^*

来源：Journal of Pharmaceutical and Biomedical Analysis, 2012, 71: 99-103.

DOI：10.1016/j.jpba.2012.08.010

• Oxaliplatin
• Hydrophilic interaction liquid chromatography-tandem mass spectrometry
• Plasma ultrafiltrates

Oxaliplatin is a platinum agent that is used for treatment of colorectal cancer. A sensitive and selective hydrophilic interaction liquid chromatography tandem mass spectrometric method for the quantification of oxaliplatin was developed. Human plasma ultrafiltrates were precipitated by acetonitrile containing carboplatin as an internal standard and further diluted with acetonitrile. Chromatographic separation of oxaliplatin and the internal standard was achieved with a column modified with phosphorylcholine and an isocratic mobile phase (acetonitrile/water/acetic acid = 90:10:0.1, v/v/v) at the flow rate of 0.2 mL/min. The lower limit of quantification for oxaliplatin was 25 ng/mL. The linearity range of the method was from 25 to 5000 ng/mL. The intra-day precision and inter-day precision (RSD) ranged from 0.8 to 6.1%, and the accuracy (RE) was within +/- 4.5%. The extraction recoveries from human plasma ultrafiltrates were 83.6-91.6%, and ion suppression caused by matrix components was 86.7-88.5% at three different levels, respectively. This method was applied to a clinical pharmacokinetic study of oxaliplatin in a cancer patient. The maximum concentration of colorectal cancer patient administered oxaliplatin was 1650 ng/mL.

• 出版日期2012-12