ABSTRACT
Purpose
To investigate the potency of LC-MS/MS by means of sensitivity and the applicability for cassette dosing in microdose clinical trials.
Methods
Thirty one top-selling 31 drugs were spiked to human plasma, extracted, and analyzed by LC–MS/MS.
Results
The lower limits of quantification for each drug varied from 0.08 to 50 pg/mL, and were lower than one eighth of the assumed maximum plasma concentration at microdose in all drugs except for losartan, indicating the high performance in acquisition of full pharmacokinetic profiles at microdose. We also succeeded in simultaneous analysis of multiple compounds, assuming a situation of cassette dosing in which multiple drug candidates would be administrated simultaneously.
Conclusions
Together with the features of LC–MS/MS, such as immediate verification, the utilization of non-radiolabeled drugs and no special facilities, we suppose that LC–MS/MS analysis would be widely applicable in conducting microdose clinical studies.
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Abbreviations
- AMS:
-
accelerator mass spectrometry
- CmaxClin :
-
Cmax in clinical PK study
- CmaxMD :
-
Cmax in microdose study
- CV:
-
coefficient of variation
- DoseClin :
-
dose in clinical PK study
- DoseMD :
-
dose in microdose study
- EMEA:
-
European Agency for the Evaluation of Medicinal Products
- EUMAPP:
-
European Union Microdose AMS Partnership Programme
- FDA:
-
Food and Drug Administration
- HILIC:
-
hydrophilic interaction chromatography
- IS:
-
internal standard
- LC–MS/MS:
-
liquid chromatography-tandem mass spectrometry
- LLE:
-
liquid-liquid extraction
- LLOQ:
-
lower limit of quantification
- MHLW:
-
Ministry of Health Labour and Welfare
- MRM:
-
multiple reaction monitoring
- ODS:
-
octadecylsilyl
- PET:
-
positron emission tomography
- PK:
-
pharmacokinetic
- QC:
-
quality control
- RE:
-
relative error
- SPE:
-
solid-phase extraction
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ACKNOWLEDGMENTS
Naoe Yamane is an employee of JCL Bioassay Corporation, Hyogo, Japan. We thank Drs. M. Shibasaki, M. Kanai, and K. Yamatsugu of the Graduate School of Pharmaceutical Sciences at the University of Tokyo, Japan, for donating the gift of oseltamivir phosphate. We also thank to Dr. T. Tanimoto of the School of Pharmaceutical Sciences, Mukogawa Women’s University, Japan, for sharing the reagents with us, and T. Hakui and M. Nishimura of GL Science Inc. for technical support of SPE methods. This work was performed as part of “Innovative Strategies for Drug Development Using Microdosing Clinical Studies,” financed by the New Energy and Industrial Technology Development Organization (NEDO). A part of this work has been presented at the 23rd JSSX (The Japanese Society for the Study of Xenobiotics) Annual Meeting “Study on practical application for liquid chromatography/tandem mass spectrometry for determination of drug concentration in human plasma in microdose study.”
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Yamane, N., Tozuka, Z., Kusama, M. et al. Clinical Relevance of Liquid Chromatography Tandem Mass Spectrometry as an Analytical Method in Microdose Clinical Studies. Pharm Res 28, 1963–1972 (2011). https://doi.org/10.1007/s11095-011-0423-8
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DOI: https://doi.org/10.1007/s11095-011-0423-8