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High‐performance liquid chromatography/tandem mass spectrometry for the quantitative analysis of a novel taxane derivative (BAY59‐8862) in biological samples and characterisation of its metabolic profile in rat bile samples
Author(s) -
Sottani Cristina,
Colombo Tina,
Zucchetti Massimo,
Fruscio Robert,
D'Incalci Maurizio,
Minoia Claudio
Publication year - 2001
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.438
Subject(s) - chemistry , chromatography , high performance liquid chromatography , liquid chromatography–mass spectrometry , tandem mass spectrometry , mass spectrometry , extraction (chemistry) , solid phase extraction , sample preparation , analyte , selected reaction monitoring , taxane , breast cancer , medicine , cancer
A sensitive, specific, accurate and reproducible high‐performance liquid chromatography (HPLC) analytical method was developed and validated for the quantification of the novel oral taxane analogue BAY59‐8862 in mouse plasma and tissue samples. A fully automated solid‐phase extraction procedure was applied to the plasma after internal standard (IS) addition, with only 0.2 mL volume of the sample loaded on a CN‐Sep‐pak cartridge. In the case of the tissues a very simple acetonitrile extraction was used to recover BAY59‐8862 and its internal standard from liver. The procedure for the quantification of BAY59‐8862 and its IS (IDN5127) is based on high‐performance liquid chromatography/ion spray‐tandem mass spectrometry, operating in selected ion monitoring mode. The retention times of BAY and IS were 7.21 and 10.36 min, respectively. In both plasma and tissue specimens the assay was linear in the range 50–5000 ng/mL (ng/g). The overall precision and accuracy were assessed on three different days. The results for plasma were within 6.1% (precision) and between 99 and 112% (accuracy), and for the liver samples within 7.3% and between 104 and 118%, respectively. The LOD was 5 ng/mL and 20 ng/g in the plasma and liver, respectively. In addition, the biliary excretion of the compound in rats was studied. The study showed that an oxidative chemical reaction was the preferred metabolic pathway for biliary excretion, and two sets of mono‐ and dihydroxylated metabolites were detected by LC/ISP‐MS/MS experiments. With this method, BAY59‐8862 pharmacokinetic was determined in mice. The combined results demonstrate that the methodology can be considered a valid approach to conduct pharmacokinetic and metabolic studies during preclinical and clinical investigations. Copyright © 2001 John7 Wiley & Sons, Ltd.