Analysis of imatinib in bone marrow and plasma samples of chronic myeloid leukaemia patients using solid phase extraction LC-ESI-MS

Iqbal, Z., Elliott, M., Watson, D.G., Holyoake, T.L. and Jorgensen, H.G. (2011) Analysis of imatinib in bone marrow and plasma samples of chronic myeloid leukaemia patients using solid phase extraction LC-ESI-MS. Pakistan Journal of Pharmaceutical Sciences, 24(3), pp. 285-291.

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Abstract

The LC-ESI-MS was developed and validated for the analysis of imatinib in plasma and bone marrow samples using deuterated imatinib (D(8)-IM) as an internal standard. The biological samples were extracted using Strata-X-C SPE cartridges and separated on C<sub>8</sub> column (50 x 3 mm, 3 µm), and methanol: 0.1% formic acid (70:30) was delivered at the rate of 0.7 ml/min as a mobile phase. Imatinib was quantified in samples by monitoring the ions m/z 494.3 for imatinib and 502.3 for D<sub>8</sub>-imatinib on mass spectrometer. The method was linear in the concentration range of 1-1500 ng/250 µl in spiked human plasma samples and limit of quantification was 5 ng/mL. Inter-day and intra-day variations in spiked human plasma spiked with 50, 250 and 500 ng /mL were less than 3.16%. The repeatability and reproducibility and other parameters of the methods were also validated. The method was employed for the analysis of the imatinib in human plasma and bone marrow samples. The drug levels in bone marrow and plasma samples were correlated to the degree of cytogenetic response. No significant difference of imatinib level between blood and bone marrow in IM-treated patients dosed to steady state was observed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Holyoake, Professor Tessa and Jorgensen, Dr Heather
Authors: Iqbal, Z., Elliott, M., Watson, D.G., Holyoake, T.L., and Jorgensen, H.G.
Subjects:R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer)
College/School:College of Medical Veterinary and Life Sciences > Institute of Cancer Sciences
Journal Name:Pakistan Journal of Pharmaceutical Sciences
Publisher:Pakistan Journal of Pharmaceutical Sciences
ISSN:1011-601X
Copyright Holders:Copyright © 2011 Pakistan Journal of Pharmaceutical Sciences
First Published:First published in Pakistan Journal of Pharmaceutical Sciences 24(3):285-291
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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