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Determination of raloxifene and its glucuronides in human urine by liquid chromatography-tandem mass spectrometry assayTrdan Lušin, Tina ...A selective, sensitive, accurate and precise liquid chromatography-tandem massspectrometry (LC-MS/MS) method for determination of raloxifene and its three glucuronides: raloxifene6 bglucuronide (M1), ... raloxifene4 0 bglucuronide (M2), raloxifene6,4 0diglucuronide (M3) in urine samples is presented in this paper. To our knowledge the developed analytical method is the first fully validated method capable of simultaneous determination of raloxifene and its glucuronides in real urine samples. Moreover, for the first time a method for determination of raloxifene diglucuronide in relevant biological samples was introduced. Metabolites were obtained by a bioconversion process of raloxifeneto its glucuronides using the microorganism Streptomyces sp. and were used as standards for validation. Urine samples were introduced to a simple solid phase extraction prior to the analysis by LC-MS/MS. The method was linear in a wide range with high determination coefficient (r2 > 0.997). The limits of quantification achieved were 1.01, 1.95, 2.83 and 4.69 nM for raloxifene, M1, M2 and M3, respectively. The recoveries were higher than 92.5%, the accuracy was within 100 8.8% and the precision was better than 12% for all compounds. The developed method was successfully applied to the real urine samples and showed to be appropriate for use in further research ofstill not completely discovered raloxifene pharmacokinetics. Furthermore, the presented method could also serve for a potential application in antidoping analysis.Source: Journal of chromatography. B, Analytical technologies in the biomedical and life sciences. - ISSN 1570-0232 (Vol. 879, issue 23, 2011, str. 2323-2331)Type of material - article, component partPublish date - 2011Language - englishCOBISS.SI-ID - 3063409
Author
Trdan Lušin, Tina |
Roškar, Robert, 1975- |
Trontelj, Jurij |
Ravnikar, Matjaž, farmacevt |
Mrhar, Aleš
Topics
raloksifen |
urin |
farmakokinetika |
doping
source: Journal of chromatography. B, Analytical technologies in the biomedical and life sciences. - ISSN 1570-0232 (Vol. 879, issue 23, 2011, str. 2323-2331)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Trdan Lušin, Tina | 30817 |
Roškar, Robert, 1975- | 23549 |
Trontelj, Jurij | 23420 |
Ravnikar, Matjaž, farmacevt | 29603 |
Mrhar, Aleš | 06086 |
Source: Personal bibliographies
and: SICRIS
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