Determination of S-Allylmercaptocysteine in Rat Plasma by LC-MS/MS and its Application to a Pharmacokinetics Study

作者：Yang, Min; Dong, Zhonghua; Jiang, Xiaoyan; Zhao, Zhongxi^*; Zhang, Jianqiang; Cao, Xinke; Zhang, Daizhou

来源：Journal of Chromatographic Science, 2018, 56(5): 396-402.

DOI：10.1093/chromsci/bmy001

• PERFORMANCE LIQUID-CHROMATOGRAPHY
• COLORECTAL-CANCER
• PROSTATE-CANCER
• CELLS

In this work, a rapid, simple, sensitive and specific LC-MS/MS method was developed and validated for the quantification of S-Allylmercaptocysteine (SAMC) in plasma. After a simple sample procedure by one step protein precipitation with acetontrile, the samples were separated on Gemini-NX C18 column (2.1mm i.d. 150 mm, 3 mu m, Phenomenex). The mobile phase was composed of water-acetonitrile (20: 80, v/v) at an isocratic flow rate of 0.3 mL/min. The developed method was validated based on the International Conference on Harmonization (ICH) guidelines. The results show that the method had satisfactory specificity, precision and accuracy in a linear range of 50-3,000 ng/mL for SAMC. The precision conformed to the acceptance criteria, and the lower limit of quantification was 50 ng/mL for the analyte. The plasma samples stored for 10 days or after two freeze-thaw cycles (-80 degrees C) were stable. This method was successfully applied to a pharmacokinetics study of SAMC in rats. It was found that SAMC metabolized very quickly in rats and its plasma half-life was less than 5 min.

• 出版日期2018-5
• 单位山东大学