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Aviles P, Altares R, van Andel L, Lubomirov R, Fudio S, Rosing H, Marquez del Pino FM, Tibben MM, Benedit G, Nan-Offeringa L, Luepke Estefan XE, Francesch A, Zeaiter A, Cuevas C, Schellens JH, Beijnen JH. Metabolic Disposition of Lurbinectedin, a Potent Selective Inhibitor of Active Transcription of Protein-Coding Genes, in Nonclinical Species and Patients. Drug Metab Dispos 2022; 50:327-340. [DOI: 10.1124/dmd.121.000668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 01/02/2022] [Indexed: 11/22/2022] Open
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Rong R, Zhang QL, Zhang RZ, Dan YH, Wang X, Zhao YL, Yu ZG. Exploring stereoselective excretion and metabolism studies of novel 2-(2-hydroxypropanamido)-5-trifluoromethyl benzoic acid enantiomers. RSC Adv 2020; 10:27267-27279. [PMID: 35516918 PMCID: PMC9055496 DOI: 10.1039/d0ra03500a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 06/28/2020] [Indexed: 11/21/2022] Open
Abstract
R-/S-2-(2-Hydroxypropanamido)-5-trifluoromethyl benzoic acid (R-/S-HFBA), as a novel COX inhibitor, was firstly reported to have remarkable anti-inflammatory and antiplatelet aggregation activities by our group. In our previous study, stereoselective differences in pharmacokinetics were found between HFBA enantiomers after oral and intravenous administration of each enantiomer to rats. The discrepancies might be associated with the excretion and metabolism of the two enantiomers. In this research, an UHPLC-MS/MS method was established and validated for quantification of R-/S-HFBA in rats urine, feces and bile samples in excretion study. Moreover, an ultra high performance liquid chromatography coupled with Fourier transform ion cyclotron resonance mass spectrometry (UHPLC-FT-ICR-MS) method was employed to understand the metabolism of R-/S-HFBA in rats. Results showed that the total cumulative excretion of R-/S-HFBA in three routes were 65.8% and 58.5% of the dose, respectively. The urinary excretion of R-/S-HFBA was the main route, which accounted for 40.2% and 31.7% respectively; the cumulative biliary excretion of R-/S-HFBA were 11.3% and 7.4%; the cumulative amounts of R-/S-HFBA excreted directly via feces without absorption from the gastrointestinal tract were 14.3% and 19.4%, respectively. R-/S-HFBA existed stereoselective discrepancy in excretion. In addition, 8 metabolites of S-HFBA were detected and tentatively identified including glucuronidation, glycine and N-acetyl conjugation while R-HFBA existed 7 metabolites without glycine conjugation. Formation of metabolites of R-/S-HFBA also exhibited stereoselectivity. In summary, these new findings on excretion and metabolism of R-/S-HFBA provided valuable information for stereoselective pharmacokinetics and were greatly helpful for further investigation, such as safety and mechanism of action. R-/S-2-(2-Hydroxypropanamido)-5-trifluoromethyl benzoic acid (R-/S-HFBA), as a novel COX inhibitor, was firstly reported to have remarkable anti-inflammatory and antiplatelet aggregation activities by our group.![]()
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Affiliation(s)
- Rong Rong
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Qi-li Zhang
- Department of Pharmaceutical Engineering
- College of Life Science
- Shandong University of Technology
- Zibo
- China
| | - Rui-zhen Zhang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Yu-han Dan
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Xin Wang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Yun-li Zhao
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
| | - Zhi-guo Yu
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- China
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3
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Zhang J, Jia Q, Qi J, Zhang H, Wu Y, Shi X. Exploring in vivo metabolism and excretion of QO-58L using ultra-high-performance liquid chromatography coupled with tandem mass spectrometry. Eur J Pharm Sci 2018; 117:379-391. [PMID: 29452212 DOI: 10.1016/j.ejps.2018.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 01/17/2018] [Accepted: 02/10/2018] [Indexed: 10/18/2022]
Abstract
QO-58 lysine (QO-58L) as a new potassium channel opener, reported to have a potential activity to cure neuropathic pain. The aim of this research is to develop and validate a high-performance liquid chromatography with tandem spectrometry (LC-MS/MS) method for the quantification of QO-58L in rat urine, feces and bile. In addition, analyze and identify the metabolites in urine and bile. The assay for this compound in samples detected with multiple reaction monitoring mode (MRM), and take nimodipine as internal standards (IS). To better understand the biotransformation of QO-58L, metabolites in urine and bile were identified by using ultra high performance liquid chromatography tandem quadrupole/time of flight mass spectrometry (UHPLC-Q-TOF-MS) in the positive and negative ion mode. Urine, feces and bile were quantified by three new methods. The results showed that: QO-58L was mainly eliminated through fecal route (92.94%), a small amount of it via biliary excretion (2.05%), and rarely through urinary excretion (0.024%). As a result, there are 11 metabolites were identified, including 8 phase I metabolites resulting from elimination, hydroxylation and dihydroxylation, and 3 phase II metabolites originating from sulfation, N-acetylcysteine conjugation and glucuronidation. Furthermore, the newly discoveries of excretion and metabolism significantly expanded our understanding and was going to be greatly helpful for QO-58L's further pharmacokinetic study in vivo.
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Affiliation(s)
- Jiaqi Zhang
- Key Laboratory of Neural and Vascular Biology, Ministry of Education, China; Key Laboratory of New Drug Pharmacology and Toxicology, Hebei Province, China; Department of Pharmacology, Hebei Medical University, Shijiazhuang 050017, China; The Second Hospital of Hebei Medical University, Shijiazhuang 050005, China
| | - Qingzhong Jia
- Key Laboratory of Neural and Vascular Biology, Ministry of Education, China; Key Laboratory of New Drug Pharmacology and Toxicology, Hebei Province, China; Department of Pharmacology, Hebei Medical University, Shijiazhuang 050017, China.
| | - Jinlong Qi
- Key Laboratory of Neural and Vascular Biology, Ministry of Education, China; Key Laboratory of New Drug Pharmacology and Toxicology, Hebei Province, China; Department of Pharmacology, Hebei Medical University, Shijiazhuang 050017, China.
| | - Hailin Zhang
- Key Laboratory of Neural and Vascular Biology, Ministry of Education, China; Key Laboratory of New Drug Pharmacology and Toxicology, Hebei Province, China; Department of Pharmacology, Hebei Medical University, Shijiazhuang 050017, China
| | - Yaru Wu
- Key Laboratory of Neural and Vascular Biology, Ministry of Education, China; Key Laboratory of New Drug Pharmacology and Toxicology, Hebei Province, China; Department of Pharmacology, Hebei Medical University, Shijiazhuang 050017, China
| | - Xiaowei Shi
- College of Pharmacy, Hebei Medical University, Shijiazhuang 050017, China
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Marcos J, Pozo OJ. Current LC-MS methods and procedures applied to the identification of new steroid metabolites. J Steroid Biochem Mol Biol 2016; 162:41-56. [PMID: 26709140 DOI: 10.1016/j.jsbmb.2015.12.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/25/2015] [Accepted: 12/11/2015] [Indexed: 12/31/2022]
Abstract
The study of the metabolism of steroids has a long history; from the first characterizations of the major metabolites of steroidal hormones in the pre-chromatographic era, to the latest discoveries of new forms of excretions. The introduction of mass spectrometers coupled to gas chromatography at the end of the 1960's represented a major breakthrough for the elucidation of new metabolites. In the last two decades, this technique is being complemented by the use of liquid chromatography-mass spectrometry (LC-MS). In addition of becoming fundamental in clinical steroid determinations due to its excellent specificity, throughput and sensitivity, LC-MS has emerged as an exceptional tool for the discovery of new steroid metabolites. The aim of the present review is to provide an overview of the current LC-MS procedures used in the quest of novel metabolic products of steroidal hormones and exogenous steroids. Several aspects regarding LC separations are first outlined, followed by a description of the key processes that take place in the mass spectrometric analysis, i.e. the ionization of the steroids in the source and the fragmentation of the selected precursor ions in the collision cell. The different analyzers and approaches employed together with representative examples of each of them are described. Special emphasis is placed on triple quadrupole analyzers (LC-MS/MS), since they are the most commonly employed. Examples on the use of precursor ion scan, neutral loss scan and theoretical selected reaction monitoring strategies are also explained.
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Affiliation(s)
- Josep Marcos
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain; Toxicology Department, Labco Diagnostics, Verge de Guadalupe 18, 08950 Esplugues de Llobregat, Spain
| | - Oscar J Pozo
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain.
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5
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Negash K, Andonian C, Felgate C, Chen C, Goljer I, Squillaci B, Nguyen D, Pirhalla J, Lev M, Schubert E, Tiffany C, Hossain M, Ho M. The metabolism and disposition of GSK2140944 in healthy human subjects. Xenobiotica 2015; 46:683-702. [DOI: 10.3109/00498254.2015.1112933] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Cowcher DP, Jarvis R, Goodacre R. Quantitative Online Liquid Chromatography-Surface-Enhanced Raman Scattering of Purine Bases. Anal Chem 2014; 86:9977-84. [DOI: 10.1021/ac5029159] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- David P. Cowcher
- School
of Chemistry and Manchester
Institute of Biotechnology, University of Manchester, 131 Princess
Street, Manchester, M1
7DN, U.K
| | - Roger Jarvis
- School
of Chemistry and Manchester
Institute of Biotechnology, University of Manchester, 131 Princess
Street, Manchester, M1
7DN, U.K
| | - Royston Goodacre
- School
of Chemistry and Manchester
Institute of Biotechnology, University of Manchester, 131 Princess
Street, Manchester, M1
7DN, U.K
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Sun X, Zhao L, Niu L, Qin F, Lu X, Xiong Z, Li F. Structure identification and elucidation of mosapride metabolites in human urine, feces and plasma by ultra performance liquid chromatography-tandem mass spectrometry method. Xenobiotica 2014; 44:734-42. [PMID: 24417754 DOI: 10.3109/00498254.2014.880201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
1. Mosapride citrate (mosapride) is a potent gastroprokinetic agent. The only previous study on mosapride metabolism in human reported one phase I oxidative metabolite, des-p-fluorobenzyl mosapride, in human plasma and urine using HPLC method. Our aim was to identify mosapride phase I and phase II metabolites in human urine, feces and plasma using UPLC-ESI-MS/MS. 2. A total of 16 metabolites were detected. To the best of our knowledge, 15 metabolites have not been reported previously in human. 3. Two new metabolites, morpholine ring-opened mosapride (M15) and mosapride N-oxide (M16), alone with one known major metabolite, des-p-fluorobenzyl mosapride (M3), were identified by comparison with the reference standards prepared by our group. The chemical structures of seven phase I and six phase II metabolites of mosapride were elucidated based on UPLC-MS/MS analyses. 4. There were two major phase I reactions, dealkylation and morpholine ring cleavage. Phase II reactions included glucuronide, glucose and sulfate conjugation. The comprehensive metabolic pathway of mosapride in human was proposed for the first time. 5. The metabolites in humans were compared with those in rats reported previously. In addition to M10, the other 15 metabolites in humans were also found in rats. This result suggested that there was little qualitative species difference in the metabolism of mosapride between rats and humans. 6. In all, 16 mosapride metabolites including 15 new metabolites were reported. These results allow a better understanding of mosapride disposition in human.
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Affiliation(s)
- Xiaohong Sun
- School of Pharmacy, Shenyang Pharmaceutical University , Shenyang , PR China
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Dave M, Nash M, Young GC, Ellens H, Magee MH, Roberts AD, Taylor MA, Greenhill RW, Boyle GW. Disposition and metabolism of darapladib, a lipoprotein-associated phospholipase A2 inhibitor, in humans. Drug Metab Dispos 2013; 42:415-30. [PMID: 24378325 DOI: 10.1124/dmd.113.054486] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The absorption, metabolism, and excretion of darapladib, a novel inhibitor of lipoprotein-associated phospholipase A2, was investigated in healthy male subjects using [(14)C]-radiolabeled material in a bespoke study design. Disposition of darapladib was compared following single i.v. and both single and repeated oral administrations. The anticipated presence of low circulating concentrations of drug-related material required the use of accelerator mass spectrometry as a sensitive radiodetector. Blood, urine, and feces were collected up to 21 days post radioactive dose, and analyzed for drug-related material. The principal circulating drug-related component was unchanged darapladib. No notable metabolites were observed in plasma post-i.v. dosing; however, metabolites resulting from hydroxylation (M3) and N-deethylation (M4) were observed (at 4%-6% of plasma radioactivity) following oral dosing, indicative of some first-pass metabolism. In addition, an acid-catalyzed degradant (M10) resulting from presystemic hydrolysis was also detected in plasma at similar levels of ∼5% of radioactivity post oral dosing. Systemic exposure to radioactive material was reduced within the repeat dose regimen, consistent with the notion of time-dependent pharmacokinetics resulting from enhanced clearance or reduced absorption. Elimination of drug-related material occurred predominantly via the feces, with unchanged darapladib representing 43%-53% of the radioactive dose, and metabolites M3 and M4 also notably accounting for ∼9% and 19% of the dose, respectively. The enhanced study design has provided an increased understanding of the absorption, distribution, metabolism and excretion (ADME) properties of darapladib in humans, and substantially influenced future work on the compound.
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Affiliation(s)
- Mehul Dave
- Department of Drug Metabolism and Pharmacokinetics (M.D., M.N., G.C.Y., A.D.R., M.A.T., G.W.B.) and Department of Safety Assessment (R.W.G.), GlaxoSmithKline Research & Development, Ware, United Kingdom, and Department of Drug Metabolism and Pharmacokinetics (H.E.) and Clinical Pharmacology, Modeling and Simulation (M.H.M.), GlaxoSmithKline Research & Development, Upper Merion, Philadelphia
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9
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Ibrahim H, Couderc F, Perio P, Collin F, Nepveu F. Behavior of N-oxide derivatives in atmospheric pressure ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:621-628. [PMID: 23413221 DOI: 10.1002/rcm.6493] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Revised: 11/26/2012] [Accepted: 12/15/2012] [Indexed: 06/01/2023]
Abstract
RATIONALE Indolone-N-oxide derivatives possess interesting biological properties. The analysis of these compounds using mass spectrometry (MS) may lead to interference or under-estimation due to the tendency of the N-oxides to lose oxygen. All the previous works focused only on the temperature of the heated parts (vaporizer and ion-transfer tube) of the mass spectrometer without investigating other parameters. This work is extended to the investigation of other parameters. METHODS The behavior of N-oxides during atmospheric pressure chemical ionization (APCI) and electrospray ionization (ESI) has been investigated using MS(n) ion trap mass spectrometry. Different parameters were investigated to clarify the factors implicated in the deoxygenation process. The investigated parameters were vaporizer temperature (APCI), ion-transfer tube temperature, solvent type, and the flow rates of the sheath gas, auxiliary gas, sweep gas and mobile phase. RESULTS The deoxygenation increased when the vaporizer temperature increased. The extent of the 'thermally' induced deoxygenation was inversely proportional to the ion-transfer tube temperature and auxiliary gas flow rate and in direct proportion to the mobile phase flow rate. Deoxygenation was not detected under MS/MS fragmentation and hence it is a non-collision-induced dissociation. N-Oxides have the tendency to form abundant 'non-classical' dimers under ESI, which fragment via dehydration rather than giving their corresponding monomer. CONCLUSIONS Deoxygenation is not solely a 'classical' thermal process but it is a thermal process that is solvent-mediated in the source. Deoxygenation was maximal with an APCI source while dimerization was predominant with an ESI source. Therefore, attention should be paid to these molecular changes in the mass spectrometer as well as to the choice of the ionization mode for N-oxides.
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Affiliation(s)
- Hany Ibrahim
- Université de Toulouse, UPS, UMR 152 (PHARMA-DEV), F-31062 Toulouse cedex 9, France.
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10
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Bourdon F, Lecoeur M, Verones V, Vaccher C, Lebegue N, Dine T, Kambia N, Goossens JF. In vitro pharmacokinetic profile of a benzopyridooxathiazepine derivative using rat microsomes and hepatocytes: identification of phases I and II metabolites. J Pharm Biomed Anal 2013; 80:69-78. [PMID: 23528331 DOI: 10.1016/j.jpba.2013.02.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 02/12/2013] [Accepted: 02/14/2013] [Indexed: 10/27/2022]
Abstract
In the present study, the in vitro metabolic behavior of a benzopyridooxathiazepine (BZN), a potent tubulin polymerization inhibitor, was investigated by liquid chromatography-UV detection (LC-UV). First, simple and fast LC-UV methods have been optimized and validated to evaluate the pharmacokinetic profile of BZN using rat liver microsomes or hepatocytes primary cultures suspensions. Whatever the medium investigated, baseline resolution between the internal standard and BZN was achieved in a run time less than 15min using a Symmetry ODS column (150mm×4.6mm i.d., 5μm) and a mobile phase consisting of acetonitrile/water/formic acid 60:40:0.1 (v/v/v). Linearity was assessed in the 0.1-50μM and in the 0.05-5μM concentration ranges, respectively, in microsomal and hepatocyte matrix. According to the novel strategy based on the build of the accuracy profile, total error of the developed methods was included within the ±10% limits of acceptance. Then, from incubation of BZN with both liver microsomes and or hepatocytes, structural informations on phase I and phase II metabolites were acquired using liquid chromatography coupled to electrospray orbitrap mass spectrometer (LC-MS). Mass spectrum, double bond equivalent and elemental composition were useful data to access to the chemical structure of each metabolite. In microsomal suspension, four main metabolites were observed including monohydroxylation and dihydroxylation of the benzopyridooxathiazepine core, demethylation of the methoxyphenyl moiety, as well as their combinations. The phase II metabolites detected in hepatocytes suspension were the glucuronide adducts of both demethylated BZN and mono-oxygenated BZN. Based on the structural elucidation of the metabolites detected, we proposed an in vitro metabolic pathway of BZN, a new tubulin polymerization inhibitor.
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Affiliation(s)
- Florence Bourdon
- Univ Lille Nord de France, UDSL, EA GRIIOT, UFR Pharmacie, F-59000 Lille, France
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11
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Vecchione G, Casetta B, Chiapparino A, Bertolino A, Tomaiuolo M, Cappucci F, Gatta R, Margaglione M, Grandone E. A reliable and rapid tool for plasma quantification of 18 psychotropic drugs by ESI tandem mass spectrometry. J Pharm Biomed Anal 2012; 67-68:104-13. [PMID: 22608096 DOI: 10.1016/j.jpba.2012.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 04/16/2012] [Accepted: 04/17/2012] [Indexed: 11/15/2022]
Abstract
A simple liquid chromatographic tandem mass spectrometry (LC-MS/MS) method has been developed for simultaneous analysis of 17 basic and one acid psychotropic drugs in human plasma. The method relies on a protein precipitation step for sample preparation and offers high sensitivity, wide linearity without interferences from endogenous matrix components. Chromatography was run on a reversed-phase column with an acetonitrile-H₂O mixture. The quantification of target compounds was performed in multiple reaction monitoring (MRM) and by switching the ionization polarity within the analytical run. A further sensitivity increase was obtained by implementing the functionality "scheduled multiple reaction monitoring" (sMRM) offered by the recent version of the software package managing the instrument. The overall injection interval was less than 5.5 min. Regression coefficients of the calibration curves and limits of quantification (LOQ) showed a good coverage of over-therapeutic, therapeutic and sub-therapeutic ranges. Recovery rates, measured as percentage of recovery of spiked plasma samples, were ≥ 94%. Precision and accuracy data have been satisfactory for a therapeutic drug monitoring (TDM) service as for managing plasma samples from patients receiving psycho-pharmacological treatment.
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Affiliation(s)
- Gennaro Vecchione
- Atherosclerosis and Thrombosis Unit, I.R.C.C.S. "Casa Sollievo della Sofferenza", S. Giovanni Rotondo, Foggia, Italy
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Wang X, Kapoor V, Smythe GA. Extraction and Chromatography-Mass Spectrometric Analysis of the Active Principles from Selected Chinese Herbs and Other Medicinal Plants. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 31:927-44. [PMID: 14992545 DOI: 10.1142/s0192415x0300165x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Medicinal herbs have a long history of use in the practice of traditional Chinese medicine and a substantial body of evidence has, over recent decades, demonstrated a range of important pharmacological properties. Western biomedical researchers are examining not only the efficacy of the traditional herbal products but, through the use of a range of bioassays and analytical techniques, are developing improved methods to isolate and characterize active components. This review briefly describes the different extraction methodologies used in the preparation of herbal extracts and reviews the utility of chromatography-mass spectrometry for the analysis of their active components. In particular, applications of gas or liquid chromatography with mass spectrometry for the isolation and characterization of active components of ginseng are critically assessed. The analysis of toxic substances from herb extracts with mass spectrometric techniques is also discussed along with the potential for mass spectrometric methods to investigate the proteomics of herbal extracts.
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Affiliation(s)
- Xiaosuo Wang
- Bioanalytical Mass Spectrometry Facility, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
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13
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Approaches for the rapid identification of drug metabolites in early clinical studies. Bioanalysis 2011; 3:197-213. [DOI: 10.4155/bio.10.186] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Understanding the metabolism of a novel drug candidate in drug discovery and drug development is as important today as it was 30 years ago. What has changed in this period is the technology available for proficient metabolite characterization from complex biological sources. High-efficiency chromatography, sensitive MS and information-rich NMR spectroscopy are approaches that are now commonplace in the modern laboratory. These advancements in analytical technology have led to unequivocal metabolite identification often being performed at the earliest opportunity, following the first dose to man. For this reason an alternative approach is to shift from predicting and extrapolating possible human metabolism from in silico and nonclinical sources, to actual characterization at steady state within early clinical trials. This review provides an overview of modern approaches for characterizing drug metabolites in these early clinical studies. Since much of this progress has come from technology development over the years, the review is concluded with a forward-looking perspective on how this progression may continue into the next decade.
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Renzulli C, Nash M, Wright M, Thomas S, Zamuner S, Pellegatti M, Bettica P, Boyle G. Disposition and Metabolism of [14C]SB-649868, an Orexin 1 and 2 Receptor Antagonist, in Humans. Drug Metab Dispos 2010; 39:215-27. [DOI: 10.1124/dmd.110.035386] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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15
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Pagliarusco S, Martinucci S, Bordini E, Miraglia L, Cufari D, Ferrari L, Pellegatti M. Tissue Distribution and Characterization of Drug-Related Material in Rats and Dogs after Repeated Oral Administration of Casopitant. Drug Metab Dispos 2010; 39:283-93. [DOI: 10.1124/dmd.110.035063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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16
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Zhang Q, Ma P, Cole RB, Wang G. In vitro metabolism of indomethacin morpholinylamide (BML-190), an inverse agonist for the peripheral cannabinoid receptor (CB(2)) in rat liver microsomes. Eur J Pharm Sci 2010; 41:163-72. [PMID: 20542112 DOI: 10.1016/j.ejps.2010.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Revised: 05/19/2010] [Accepted: 06/03/2010] [Indexed: 11/29/2022]
Abstract
The in vitro metabolism of an inverse agonist of the peripheral cannabinoid receptor (CB(2)), indomethacin morpholinylamide (BML-190), has been characterized using rat liver microsomal incubation. BML-190 was found to yield at least 15 metabolic products as identified by HPLC-MS/MS analysis. Four major phase one metabolic pathways either individually, or in combination, were proposed to account for the identified metabolic products: (1) loss of the p-chlorobenzyl group, (2) hydroxylation on the indole or on the morpholine ring, (3) morpholinyl ring opening, and (4) demethylation of the methoxyl group on the indole ring.
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Affiliation(s)
- Qiang Zhang
- Department of Chemistry, Xavier University of Louisiana, 1 Drexel Dr, New Orleans, LA 70125, USA
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17
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Miraglia L, Pagliarusco S, Bordini E, Martinucci S, Pellegatti M. Metabolic Disposition of Casopitant, a Potent Neurokinin-1 Receptor Antagonist, in Mice, Rats, and Dogs. Drug Metab Dispos 2010; 38:1876-91. [DOI: 10.1124/dmd.110.033092] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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18
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Gillotin F, Chiap P, Frédérich M, Van Heugen JC, Francotte P, Lebrun P, Pirotte B, de Tullio P. Coupling of Liquid Chromatography/Tandem Mass Spectrometry and Liquid Chromatography/Solid-Phase Extraction/NMR Techniques for the Structural Identification of Metabolites following In Vitro Biotransformation of SUR1-Selective ATP-Sensitive Potassium Channel Openers. Drug Metab Dispos 2009; 38:232-40. [DOI: 10.1124/dmd.109.028928] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Sun X, Niu L, Li X, Lu X, Li F. Characterization of metabolic profile of mosapride citrate in rat and identification of two new metabolites: Mosapride N-oxide and morpholine ring-opened mosapride by UPLC–ESI-MS/MS. J Pharm Biomed Anal 2009; 50:27-34. [DOI: 10.1016/j.jpba.2009.03.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2008] [Revised: 03/08/2009] [Accepted: 03/10/2009] [Indexed: 11/30/2022]
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Pellegatti M, Bordini E, Fizzotti P, Roberts A, Johnson BM. Disposition and Metabolism of Radiolabeled Casopitant in Humans. Drug Metab Dispos 2009; 37:1635-45. [DOI: 10.1124/dmd.109.026781] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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21
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Quantification of polar drugs in human plasma with liquid chromatography–tandem mass spectrometry. Bioanalysis 2009; 1:187-203. [DOI: 10.4155/bio.09.19] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Liquid chromatography–tandem mass spectrometry (LC–MS/MS) has played an important role in quantitative bioanalytical assays. This review summarizes the recent progress on quantification of polar drugs in plasma with LC–MS/MS. Various types of polar analytes were extracted using protein precipitation or solid-phase extraction and precolumn derivatization was utilized in some cases. The analytes were then separated using different types of chromatographic method, which included reversed-phase chromatography, aqueous normal-phase chromatography, hydrophilic interaction liquid chromatography and ion-pairing chromatography. Stationary phases of mixed mode and porous graphitic carbon materials are gaining acceptance in bioanalytical applications. These technologies can be valuable supplements in the quantification of polar drugs in human plasma with LC–MS/MS. Matrix effects have also been discussed in this review.
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Huber C, Bartha B, Harpaintner R, Schröder P. Metabolism of acetaminophen (paracetamol) in plants--two independent pathways result in the formation of a glutathione and a glucose conjugate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2009; 16:206-213. [PMID: 19145453 DOI: 10.1007/s11356-008-0095-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2008] [Accepted: 11/30/2008] [Indexed: 05/27/2023]
Abstract
BACKGROUND, AIM, AND SCOPE Pharmaceuticals and their metabolites are detected in the aquatic environment and our drinking water supplies. The need for high quality drinking water is one of the most challenging problems of our times, but still only little knowledge exists on the impact of these compounds on ecosystems, animals, and man. Biological waste water treatment in constructed wetlands is an effective and low-cost alternative, especially for the treatment of non-industrial, municipal waste water. In this situation, plants get in contact with pharmaceutical compounds and have to tackle their detoxification. The mechanisms for the detoxification of xenobiotics in plants are closely related to the mammalian system. An activation reaction (phase I) is followed by a conjugation (phase II) with hydrophilic molecules like glutathione or glucose. Phase III reactions can be summarized as storage, degradation, and transport of the xenobiotic conjugate. Until now, there is no information available on the fate of pharmaceuticals in plants. In this study, we want to investigate the fate and metabolism of N-acetyl-4-aminophenol (paracetamol) in plant tissues using the cell culture of Armoracia rusticana L. as a model system. MATERIALS AND METHODS A hairy root culture of A. rusticana was treated with acetaminophen in a liquid culture. The formation and identification of metabolites over time were analyzed using HPLC-DAD and LC-MSn techniques. RESULTS With LC-MS technique, we were able to detect paracetamol and identify three of its metabolites in root cells of A. rusticana. Six hours after incubation with 1 mM of acetaminophen, the distribution of acetaminophen and related metabolites in the cells resulted in 18% paracetamol, 64% paracetamol-glucoside, 17% paracetamol glutathione, and 1% of the corresponding cysteine conjugate. DISCUSSION The formation of two independently formed metabolites in plant root cells again revealed strong similarities between plant and mammalian detoxification systems. The detoxification mechanism of glucuronization in mammals is mirrored by glucosidation of xenobiotics in plants. Furthermore, in both systems, a glutathione conjugate is formed. Due to the existence of P450 enzymes in plants, the formation of the highly reactive NAPQI intermediate is possible. CONCLUSIONS In this study, we introduce the hairy root cell culture of A. rusticana L. as a suitable model system to study the fate of acetaminophen in plant tissues. Our first results point to the direction of plants being able to take up and detoxify the model substrate paracetamol. These first findings underline the great potential of using plants for waste water treatments in constructed wetlands. RECOMMENDATIONS AND PERSPECTIVES This very first study on the detoxification of a widely used antipyretic agent in plant tissues again shows the flexibility of plant detoxification systems and their potential in waste water treatment facilities. This study covers only the very first steps of acetaminophen detoxification in plants; still, there is no data on long-term exposure as well as the possible impact of pharmaceuticals on the plant health and stress defense. Long-term experiments need to be performed to follow the fate of acetaminophen in root and leaf cells in a whole plant system, and to evaluate possible usage of plants for the remediation of acetaminophen from waste water.
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Affiliation(s)
- Christian Huber
- Department of Microbe-Plant Interactions, German Research Center for Health and Environment GmbH, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
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Ren L, Bi K, Gong P, Cheng W, Song Z, Fang L, Chen X. Characterization of the in vivo and in vitro metabolic profile of PAC-1 using liquid chromatography-mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2008; 876:47-53. [PMID: 18996064 DOI: 10.1016/j.jchromb.2008.10.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2008] [Revised: 10/06/2008] [Accepted: 10/07/2008] [Indexed: 11/27/2022]
Abstract
In the present study, the metabolic profile of PAC-1, a potential anticancer drug, was investigated using liquid chromatography-mass spectrometric (LC/MS) techniques. Two different types of mass spectrometers--a quadrupole time-of-flight (Q-TOF) mass spectrometer and an ion trap (IT) mass spectrometer--were employed to acquire structural information on PAC-1 metabolites. A gradient liquid chromatographic system composed of 0.2% formic acid in methanol and 0.2% formic acid in water was used for metabolite separation on an Agilent TC-C(18) column. A total of 16 metabolites were detected. The corresponding product ion spectra were acquired and interpreted, and structures were proposed. Accurate mass measurement using LC-Q-TOF was used to determine the elemental composition of metabolites thereby confirming the proposed structures of these metabolites. Phase I metabolic changes were predominantly observed, including debenzylation, dihydrodiol formation, hydroxylation, and dihydroxylation. The detected phase II metabolites included PAC-1 and hydroxylated PAC-1 glucuronide conjugates. Based on metabolite analysis, several PAC-1 metabolic pathways in rat were proposed.
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Affiliation(s)
- Lei Ren
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, China
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Umezawa H, Lee XP, Arima Y, Hasegawa C, Marumo A, Kumazawa T, Sato K. Determination of diazepam and its metabolites in human urine by liquid chromatography/tandem mass spectrometry using a hydrophilic polymer column. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:2333-2341. [PMID: 18618924 DOI: 10.1002/rcm.3613] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Diazepam and its major metabolites, nordazepam, temazepam and oxazepam, in human urine samples, were analyzed by liquid chromatography (LC)/tandem mass spectrometry (MS/MS) using a hydrophilic polymer column (MSpak GF-310 4B), which enables direct injection of crude biological samples. Matrix compounds in urine were eluted first from the column, while the target compounds were retained on the polymer stationary phase. The analytes retained on the column were then eluted into an acetonitrile-rich mobile phase using a gradient separation technique. All compounds showed base-peak ions due to [M+H]+ ions on LC/MS with positive ion electrospray ionization, and product ions were produced from each [M+H]+ ion by LC/MS/MS. Quantification was performed by selected reaction monitoring. All compounds spiked into urine showed method recoveries of 50.1-82.0%. The regression equations for all compounds showed excellent linearity in the range of 0.5-500 ng/mL of urine. The limits of detection and quantification for each compound were 0.1 and 0.5 ng/mL of urine, respectively. The intra- and inter-day coefficients of variation for all compounds in urine were not greater than 9.6%. The data obtained from actual determination of diazepam and its three metabolites, oxazepam, nordazepam and temazepam, in human urine after oral administration of diazepam, are also presented.
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Affiliation(s)
- Hironobu Umezawa
- Department of Legal Medicine, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
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25
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Cuyckens F, Balcaen LIL, De Wolf K, De Samber B, Van Looveren C, Hurkmans R, Vanhaecke F. Use of the bromine isotope ratio in HPLC-ICP-MS and HPLC-ESI-MS analysis of a new drug in development. Anal Bioanal Chem 2008; 390:1717-29. [PMID: 18172622 DOI: 10.1007/s00216-007-1761-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2007] [Revised: 11/15/2007] [Accepted: 11/21/2007] [Indexed: 11/26/2022]
Abstract
A combination of inductively coupled plasma mass spectrometry (ICP-MS) and electrospray ionization mass spectrometry (ESI-MS) was deployed for the metabolite profiling and metabolite identification of a new antituberculosis compound (R207910, also known as TMC207) that is currently in drug development. R207910 contains one bromine atom, allowing the detection by ICP-MS. Fluctuations in the Br sensitivity caused by the HPLC gradient were counteracted by the use of species-unspecific isotope dilution. In order to evaluate the method developed, the results obtained were compared with those acquired via radioactivity detection. HPLC-ESI-MS was used for the structural identification of R207910 and its metabolites. The (79)Br/(81)Br isotope ratio is also valuable in the search for metabolites in the complex background of endogenous compounds obtained using HPLC-ESI-MS analyses. Data-dependent scanning using isotope recognition with an ion trap mass spectrometer or processing of Q-Tof data provides HPLC-ICP-MS-like "bromatograms". The combination of accurate mass measurements and the fragmentation behavior in the MS(2) spectra obtained using the Q-Tof Ultima mass spectrometer or MS(n) spectra acquired using the LTQ-Orbitrap allowed structural characterization of the main metabolites of R207910 in methanolic dog and rat faeces extracts taken 0-24 h post-dose.
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Affiliation(s)
- Filip Cuyckens
- Global Preclinical Development, Johnson & Johnson Pharmaceutical R&D, Turnhoutseweg 30, 2340, Beerse, Belgium
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Suchanova B, Kostiainen R, Ketola RA. Characterization of the in vitro metabolic profile of amlodipine in rat using liquid chromatography–mass spectrometry. Eur J Pharm Sci 2008; 33:91-9. [DOI: 10.1016/j.ejps.2007.10.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2007] [Revised: 10/17/2007] [Accepted: 10/23/2007] [Indexed: 11/30/2022]
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Skibiński R, Misztal G. Determination of Citalopram in Tablets by HPLC, Densitometric HPTLC, and Videodensitometric HPTLC Methods. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-200041345] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Robert Skibiński
- a Department of Medicinal Chemistry , Medical University of Lublin , 6 Chodźki Str, 20‐093, Lublin, Poland
| | - Genowefa Misztal
- a Department of Medicinal Chemistry , Medical University of Lublin , 6 Chodźki Str, 20‐093, Lublin, Poland
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Kiffe M, Graf D, Trunzer M. Two-dimensional liquid chromatography/mass spectrometry set-up for structural elucidation of metabolites in complex biological matrices. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:961-70. [PMID: 17299833 DOI: 10.1002/rcm.2923] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
For absorption, distribution, metabolism and excretion (ADME) studies of drug candidates, mass spectrometry (MS) has become an indispensable tool for the characterization of biotransformation pathways. Samples from in vivo animal studies such as plasma, tissue extracts or excreta contain vast amounts of endogenous compounds. Therefore, the generation of metabolite patterns requires dedicated sample pre-treatment and sophisticated separation methods. Methodologies used for metabolite separation are often inappropriate for structure elucidation. Therefore, a two-dimensional liquid chromatography (LC) approach in combination with MS was developed. Study samples were analyzed using high-performance liquid chromatography (HPLC) for the generation of a qualitative and quantitative metabolite pattern (first dimension) with high reproducibility and recovery without extensive sample pre-treatment. Selected radioactive metabolite fractions were then applied to micro-HPLC with off-line radioactivity monitoring and subsequent MS detection (second dimension). Applying the two-dimensional HPLC/MS approach not only major metabolites could be identified, even minor and trace metabolites were characterized. The usage of sampled metabolite fractions allowed also the re-analysis of specific metabolites for additional investigations (e.g. H/D exchange experiments or product ion scanning experiments). It could be clearly shown that the two-dimensional HPLC/MS approach showed mass spectra with higher sensitivity and selectivity significantly improving the characterization of minor and trace metabolites in in vivo ADME studies.
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Affiliation(s)
- Michael Kiffe
- Novartis Institutes for BioMedical Research, Metabolism and Pharmacokinetics, CH-4002 Basel, Switzerland.
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30
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Fujimaki K, Lee XP, Kumazawa T, Sato J, Sato K. Determination of some antiallergic drugs in human plasma by direct-injection high-performance liquid chromatography-tandem mass spectrometry. Forensic Toxicol 2006. [DOI: 10.1007/s11419-006-0002-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Hakala KS, Kostiainen R, Ketola RA. Feasibility of different mass spectrometric techniques and programs for automated metabolite profiling of tramadol in human urine. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:2081-90. [PMID: 16767686 DOI: 10.1002/rcm.2562] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The purpose of the study was to determine the advantages of different mass spectrometric instruments and commercially available metabolite identification programs for metabolite profiling. Metabolism of tramadol hydrochloride and the excretion of it and its metabolites into human urine were used as a test case because the metabolism of tramadol is extensive and well known. Accurate mass measurements were carried out with a quadrupole time-of-flight mass spectrometer (Q-TOF) equipped with a LockSpray dual-electrospray ionization source. A triple quadrupole mass spectrometer (QqQ) was applied for full scan, product ion scan, precursor ion scan and neutral loss scan measurements and an ion trap instrument for full scan and product ion measurements. The performance of two metabolite identification programs was tested. The results showed that metabolite programs are time-saving tools but not yet capable of fully automated metabolite profiling. Detection of non-expected metabolites, especially at low concentrations in a complex matrix, is still almost impossible. With low-resolution instruments urine samples proved to be challenging even in a search for expected metabolites. Many false-positive hits were obtained with the automated searching and manual evaluation of the resulting data was required. False positives were avoided by using the higher mass accuracy Q-TOF. Automated programs were useful for constructing product ion methods, but the time-consuming interpretation of mass spectra was done manually. High-quality MS/MS spectra acquired on the QqQ instrument were used for confirmation of the tramadol metabolites. Although the ion trap instrument is of undisputable benefit in MS(n), the low mass cutoff of the ion trap made the identification of tramadol metabolites difficult. Some previously unreported metabolites of tramadol were found in the tramadol urine sample, and their identification was based solely on LC/MS and LC/MS/MS measurements.
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Affiliation(s)
- Kati S Hakala
- Drug Discovery and Development Technology Center (DDTC), Faculty of Pharmacy, P. O. Box 56, FI-00014 University of Helsinki, Finland
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Chin C, Zhang ZP, Karnes HT. A study of matrix effects on an LC/MS/MS assay for olanzapine and desmethyl olanzapine. J Pharm Biomed Anal 2005; 35:1149-67. [PMID: 15336361 DOI: 10.1016/j.jpba.2004.01.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2003] [Accepted: 01/06/2004] [Indexed: 11/19/2022]
Abstract
The purpose of this research project was to investigate potential matrix effects of anticoagulant and lipemia on the response of olanzapine, desmethyl olanzapine, olanzapine-D(3) and desmethyl olanzapine-D(8) in an LC/MS/MS assay. Blank human serum and sodium heparin, sodium citrate, and K(3)EDTA plasma with various degrees of lipemia were fortified with olanzapine, desmethyl olanzapine, olanzapine-D(3) and desmethyl olanzapine-D(8). Six replicates of each sample were extracted using Waters Oasis MCX cartridges and analyzed using electrospray LC/MS/MS. The analytes were separated on a Phenomenex LUNA phenyl hexyl, 2 mm x 50 mm, 5 microm, analytical column and a gradient rising from 2 to 85% mobile phase B. Mobile phase A consisted of acetonitrile-ammonium acetate (20 mM) (52:48 v/v) and mobile phase B was formic acid-acetonitrile (0.1:100 v/v). Ion suppression was investigated through post column infusion experiments. The degree of lipemia of each sample, indicated by turbidity, was ranked into categories from least to greatest and used for statistical analyses. The results from analysis of variance testing indicated that lipemia, anticoagulant and their interaction significantly influenced mass spectral matrix effects and extraction matrix effects. Differential behavior between the analytes and labeled internal standards contributed to variability. The most significant source of variability however, was ion suppression due to co-eluting matrix components.
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Affiliation(s)
- C Chin
- PPD Development, 2240 Dabney Road, Richmond, VA 23230, USA
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Sonawane ND, Muanprasat C, Nagatani R, Song Y, Verkman AS. In Vivo Pharmacology and Antidiarrheal Efficacy of a Thiazolidinone CFTR Inhibitor in Rodents. J Pharm Sci 2005; 94:134-43. [PMID: 15761937 DOI: 10.1002/jps.20228] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A small-molecule inhibitor of the cystic fibrosis transmembrane conductance regulator (CFTR), 3-[(3-trifluoromethyl)phenyl]-5-[(4-carboxyphenyl)methylene]-2-thioxo-4-thiazolidinone (CFTR(inh)-172), reduces enterotoxin-induced intestinal fluid secretion in rodents. Here, we study CFTR(inh)-172 pharmacology and antidiarrheal efficacy in rodents using (14)C-labeled CFTR(inh)-172, liquid chromatography/mass spectrometry, and a closed intestinal loop model of fluid secretion. CFTR(inh)-172 was cleared primarily by renal glomerular filtration without chemical modification. CFTR(inh)-172 accumulated in liver within 5 min after intravenous infusion in mice, and was concentrated fivefold in bile over blood. At 30-240 min, CFTR(inh)-172 was found mainly in liver, intestine, and kidney, with little detectable in the brain, heart, skeletal muscle, or lung. Pharmacokinetic analysis in rats following intravenous bolus infusion showed a distribution volume of 770 mL with redistribution and elimination half-times of 0.14 h and 10.3 h, respectively. CFTR(inh)-172 was stable in hepatic microsomes. Closed-loop studies in mice indicated that a single intraperitoneal injection of 20 microg CFTR(inh)-172 inhibited fluid accumulation at 6 h after cholera toxin by >90% in duodenum and jejunum, approximately 60% in ileum and <10% in colon. No toxicity was seen after high-dose CFTR(inh)-172 administration (3 mg/kg/day in two daily doses) in mice over the first 6 weeks of life. The metabolic stability, enterohepatic recirculation, slow renal elimination, and intestinal accumulation of CFTR(inh)-172 account for its efficacy as an antidiarrheal.
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Affiliation(s)
- N D Sonawane
- Department of Medicine, Cardiovascular Research Institute, 1246 Health Sciences East Tower, University of California, San Francisco, California 94143-0521, USA
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dos Reis EO, Vianna-Jorge R, Suarez-Kurtz G, Lima ELDS, Azevedo DDA. Development of a rapid and specific assay for detection of busulfan in human plasma by high-performance liquid chromatography/electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2005; 19:1666-74. [PMID: 15912469 DOI: 10.1002/rcm.1962] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
A sensitive and specific assay for detection of busulfan in human plasma was developed. The assay is based on rapid isolation of busulfan by liquid-liquid extraction with ethyl acetate, and detection by high-performance liquid chromatography with electrospray ionization and tandem mass spectrometry. 1,6-Bis(methanesulfonyloxy)hexane, a synthesized analogue of busulfan, was used as the internal standard (IS). The acquisition was performed in the multiple reaction monitoring mode; busulfan and the IS were detected with no interferences from plasma matrix. The method was linear over the range 5-2500 ng mL(-1), with r2 > 0.99 and a run time of only 3.5 min. The intra- and inter-assay precisions were in the ranges 2.1-11.9% and 3.2-10.1%, respectively, and the intra- and inter-assay accuracies were 92.2-107.6% and 94.7-104.1%, respectively. The absolute recoveries were 82.0% (20 ng mL(-1)), 90.6% (1000 ng mL(-1)) and 80.0% (2000 ng mL(-1)) for busulfan, and 89.1% for the IS (1000 ng mL(-1)). The limits of detection and quantification were 2 and 5 ng mL(-1), respectively. The validated method was successfully applied to analyze plasma samples obtained from six adults receiving doses of 1 mg kg(-1) in a conditioning regimen prior to bone marrow transplantation. A marked intra-patient variation in busulfan concentrations during the steady state was observed, which limits the application of pharmacokinetic modeling and suggests that continuous therapeutic monitoring is necessary for adequate individualized dosing. In this regard, the present assay brings important advantages relative to other methods described in the literature, i.e., it is highly specific and simple to perform, with a rapid chromatographic run time (3.5 min), and the whole procedure can be completed in 4-5 h, which would permit dose corrections after the third dose allowing earlier and better dosing adjustments towards the target level of busulfan.
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Affiliation(s)
- Ederson Oliveira dos Reis
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Taylor PJ. Therapeutic Drug Monitoring of Immunosuppressant Drugs by High-Performance Liquid Chromatography–Mass Spectrometry. Ther Drug Monit 2004; 26:215-9. [PMID: 15228168 DOI: 10.1097/00007691-200404000-00023] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The currently expanding range of immunosuppressant agents has placed new challenges on therapeutic drug-monitoring (TDM) services. Many of these drugs require the measurement of concentrations with subsequent dosage adjustment to maximize efficacy while minimizing toxicity. HPLC-mass spectrometry (HPLC-MS) is a relatively new technique for drug quantification and thus TDM of immunosuppressant drugs. Although mass spectrometry relies on producing, differentiating, and detecting ions in the gas phase, the development of the atmospheric pressure ionization interface (electrospray and chemical ionization) has enabled the direct coupling of solution introduction of compounds, via HPLC, to the mass analyzer. The impetus for using HPLC-MS for immunosuppressant measurement has come from the highly potent low-dose immunosuppressant drugs tacrolimus and sirolimus, which have low nanogram per milliliter circulating concentrations. A number of strategies have been reported for sample preparation and ways to automate these processes with solid-phase extraction and 2-dimensional chromatography. The disadvantages of HPLC-MS are initial cost of equipment and availability of suitably skilled scientific staff. The advantages of HPLC-mass spectrometry are high sensitivity, specificity, small sample requirements, minimal sample preparation, rapid throughput, and simultaneous measurement. Further, scientists have the ability to develop methods to measure new immunosuppressant drugs by HPLC-MS before commercial assays become available. With potential applications increasing in immunosuppressive drug monitoring, it can be envisaged that HPLC-MS may become standard equipment in TDM laboratories of the future.
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Affiliation(s)
- Paul J Taylor
- Department of Medicine, The University of Queensland, and Department of Clinical Pharmacology and Australian Bioanalytical Services Pty Ltd, Princess Alexandra Hospital, Brisbane, QLD 4102, Australia.
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Watson D, Atsriku C, Oliveira E. Review role of liquid chromatography–mass spectrometry in the analysis of oxidation products and antioxidants in biological systems. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(03)00467-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gonthier MP, Rios LY, Verny MA, Rémésy C, Scalbert A. Novel liquid chromatography-electrospray ionization mass spectrometry method for the quantification in human urine of microbial aromatic acid metabolites derived from dietary polyphenols. J Chromatogr B Analyt Technol Biomed Life Sci 2003; 789:247-55. [PMID: 12742116 DOI: 10.1016/s1570-0232(03)00073-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
An HPLC-ESI-MS-MS method was developed to quantify in human urine fourteen aromatic acids known as metabolites of dietary polyphenols. These metabolites were determined simultaneously in a single 20-min chromatographic analysis with multiple reaction monitoring detection. The inter- and intra-day precisions, calculated from quality control samples were 8.8 and 5.3%, respectively, and the mean accuracy was 2.3%. The method was tested on urine samples collected from one healthy volunteer who consumed a polyphenol-rich diet for 3 days. Increased levels of several aromatic acid metabolites were observed, demonstrating that the method can be used to detect changes in the excretion of microbial metabolites induced by the consumption of polyphenol-containing foods in humans.
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Affiliation(s)
- Marie-Paule Gonthier
- Unité des Maladies Métaboliques et Micronutriments, INRA Theix, 63122, Saint-Genès-Champanelle, France.
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Kostiainen R, Kotiaho T, Kuuranne T, Auriola S. Liquid chromatography/atmospheric pressure ionization-mass spectrometry in drug metabolism studies. JOURNAL OF MASS SPECTROMETRY : JMS 2003; 38:357-372. [PMID: 12717747 DOI: 10.1002/jms.481] [Citation(s) in RCA: 195] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The study of the metabolic fate of drugs is an essential and important part of the drug development process. The analysis of metabolites is a challenging task and several different analytical methods have been used in these studies. However, after the introduction of the atmospheric pressure ionization (API) technique, electrospray and atmospheric pressure chemical ionization, liquid chromatography/mass spectrometry (LC/MS) has become an important and widely used method in the analysis of metabolites owing to its superior specificity, sensitivity and efficiency. In this paper the feasibility of LC/API-MS techniques in the identification, structure characterization and quantitation of drug metabolites is reviewed. Sample preparation, LC techniques, isotope labeling, suitability of different MS techniques, such as tandem mass spectrometry, and high-resolution MS in drug metabolite analysis, are summarized and discussed. Automation of data acquisition and interpretation, special techniques and possible future trends are also the topics of the review.
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Affiliation(s)
- R Kostiainen
- Viikki Drug Discovery Technology Center, Department of Pharmacy, P.O. Box 56, FIN-00014 University of Helsinki, Finland.
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Hopfgartner G, Husser C, Zell M. Rapid screening and characterization of drug metabolites using a new quadrupole-linear ion trap mass spectrometer. JOURNAL OF MASS SPECTROMETRY : JMS 2003; 38:138-150. [PMID: 12577280 DOI: 10.1002/jms.420] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The application of a new hybrid RF/DC quadrupole-linear ion trap mass spectrometer to support drug metabolism and pharmacokinetic studies is described. The instrument is based on a quadrupole ion path and is capable of conventional tandem mass spectrometry (MS/MS) as well as several high-sensitivity ion trap MS scans using the final quadrupole as a linear ion trap. Several pharmaceutical compounds, including trocade, remikiren and tolcapone, were used to evaluate the capabilities of the system with positive and negative turbo ionspray, using either information-dependent data acquisition (IDA) or targeted analysis for the screening, identification and quantification of metabolites. Owing to the MS/MS in-space configuration, quadrupole-like CID spectra with ion trap sensitivity can be obtained without the classical low mass cutoff of 3D ion traps. The system also has MS(3) capability which allows fragmentation cascades to be followed. The combination of constant neutral loss or precursor ion scan with the enhanced product ion scan was found to be very selective for identifying metabolites at the picogram level in very complex matrices. Owing to the very high cycle time and, depending on the mass range, up to eight different MS experiments could be performed simultaneously without compromising chromatographic performance. Targeted product ion analysis was found to be complementary to IDA, in particular for very low concentrations. Comparable sensitivity was found in enhanced product ion scan and selected reaction monitoring modes. The instrument is particularly suitable for both qualitative and quantitative analysis.
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Affiliation(s)
- Gérard Hopfgartner
- Laboratory of Pharmaceutical Analytical Chemistry, Life Sciences Mass Spectrometry, University of Geneva, 20 Boulevard d'Yvoy, 1211 Geneva 4, Switzerland.
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40
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Bonato PS, Lanchote VL, Takayanagui OM. Simultaneous liquid chromatography-tandem mass spectrometric determination of albendazole sulfoxide and albendazole sulfone in plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2003; 783:237-45. [PMID: 12450544 DOI: 10.1016/s1570-0232(02)00665-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This paper describes a simple, fast, sensitive and reliable method for the simultaneous determination of albendazole sulfoxide (ASOX) and albendazole sulfone (ASON), the two most important metabolites of the drug albendazole (ABZ), in plasma samples using liquid chromatography and tandem mass spectrometry. After liquid-liquid extraction with dichloromethane, the two albendazole metabolites and the internal standard phenacetin were resolved in a CN column using the mobile phase methanol-water (4:6, v/v) acidified with 1% acetic acid. Detection by electrospray mass spectrometry was carried out in the positive ion mode. The method was linear up to 2500 and 250 ng/ml for ASOX and ASON, respectively, with mean recoveries of more than 85%. The precision and accuracy data, based on within- and between-day variations over 5 days, were lower than 15%. The quantitation limits of 0.5 and 5.0 ng/ml for ASON and ASOX are low enough for the method to be suitable for pharmacokinetic studies. Pharmacokinetic data obtained with the proposed method following oral administration of ABZ to a patient with neurocysticercosis are also reported.
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Affiliation(s)
- Pierina Sueli Bonato
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto-USP, CEP 14040-903, Ribeirão Preto, Brazil.
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41
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Brown PR, Robb CS, Geldart SE. Perspectives on analyses of nucleic acid constituents: the basis of genomics. J Chromatogr A 2002; 965:163-73. [PMID: 12236523 DOI: 10.1016/s0021-9673(01)01561-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The recent mapping of the human genome was a tremendous achievement made possible to a large degree by the development of analytical methods for sequencing purine and pyrimidine bases in nucleic acids. In the last 3 decades, the number of analyses of nucleic acids and their constituents by HPLC and capillary electrophoresis (CE) has exploded. These techniques have been used not only for genomics, but also for the determination of free nucleotides, nucleosides and their bases in body fluids and tissues. Although a large number of HPLC and CE papers have been published on nucleic acid constituent applications, relatively little has been written on the mechanisms of the separations. However, to optimize analytical conditions knowledgeably and rapidly, it is important to know why and how these separations occur and the factors that affect them. The HPLC methods for the analysis of nucleic acid constituents and the information available on some of the mechanisms of separation of nucleotides, nucleosides and their bases, as well as the analysis of these compounds by CE and the factors that affect these separations are discussed.
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Affiliation(s)
- Phyllis R Brown
- Department of Chemistry, University of Rhode Island, Kingston 02881, USA.
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42
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Chithalen JV, Luu L, Petkovich M, Jones G. HPLC-MS/MS analysis of the products generated from all-trans-retinoic acid using recombinant human CYP26A. J Lipid Res 2002; 43:1133-42. [PMID: 12091498 DOI: 10.1194/jlr.m100343-jlr200] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two mammalian hCYP26A expression systems have been used to analyze the metabolic products of CYP26A. Through the use of extensive HPLC, UV spectroscopy, and liquid chromatography/tandem mass spectrometry (LC-MS/MS) methodology, we have conclusively demonstrated that the complex mixture of products comprises 4-OH-all-trans-retinoic acid, 4-oxo-all-trans-retinoic acid, and 18-OH-all-trans-retinoic acid, and more polar products, partially identified as dihydroxy and mono-oxo, mono-hydroxy derivatives. These more polar products are presumed to result from multiple hydroxylations on the beta-ionone ring. The inter-relationship of initial and polar metabolites was inferred from both gene-dose and time-course experiments. Both initial and secondary metabolic steps after 4-oxo-all-trans-retinoic acid are ketoconazole-sensitive, suggesting that steps in the production of water-soluble metabolites are cytochrome P450-dependent.
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Affiliation(s)
- James V Chithalen
- Department of Biochemistry, Queen's University, Kingston, ON, K7L 3N6, Canada
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43
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Abstract
The current developments in liquid chromatography-mass spectrometry (LC-MS) and its applications to the analysis of pharmaceuticals are reviewed. Various mass spectrometric techniques, including electrospray and nanospray ionization, atmospheric pressure chemical ionization and photoionization and their interface with liquid chromatographic techniques are described. These include high performance liquid chromatography, capillary electrophoresis and capillary electrochromatography and the advantages and disadvantages of each technique are discussed. The applications of LC-MS to the studies of in vitro and in vivo drug metabolism, identification and characterization of impurities in pharmaceuticals, analysis of chiral impurities in drug substances and high-throughput LC-MS-MS systems for applications in the "accelerated drug discovery" process are described.
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Affiliation(s)
- Chang-Kee Lim
- MRC Bioanalytical Science Group, School of Biological and Chemical Sciences, Birkbeck, University of London, UK.
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Ribeiro W, Ifa DR, Corso G, Salmon J, Moraes LA, Eberlin MN, de Nucci G. Determination of RSD921 in human plasma by high-performance liquid chromatography-tandem mass spectrometry using tri-deuterated RSD921 as internal standard: application to a phase I clinical trial. JOURNAL OF MASS SPECTROMETRY : JMS 2001; 36:1133-1139. [PMID: 11747107 DOI: 10.1002/jms.218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A fast, sensitive and specific method is presented for the quantification of RSD921 in human plasma by liquid chromatography coupled with tandem mass spectrometry using tri-deuterated RSD921 (3d-RSD921) as an internal standard. A single-step liquid/liquid extraction was performed with diethyl ether/hexane (80 : 20, v/v) using 0.5 ml of plasma. The plasma calibration curves were linear from 0.1 to 20 ng ml(-1) (r > 0.999). Between-run precision, based on the percent relative deviation for replicate (n = 40) quality controls, was < or =7.27% (0.5 ng ml(-1)), < or =7.39% (5.0 ng ml(-1)), and < or =5.06% (20.0 ng ml(-1)). Between-run accuracies, based on the relative error, were +/-2.59%, +/-1.23% and +/-1.64% respectively. The method was developed to evaluate the pharmacokinetic profile after 15 min of intravenous stepwise-ascending infusion dose of RSD921 in 18 healthy volunteers. A dissociation study of protonated RSD921 and 3d-RSD921 by collision-induced dissociation using in-source fragmentation and tandem mass spectrometry is also presented.
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Affiliation(s)
- W Ribeiro
- Cartesius Analytical Unit, Department of Pharmacology ICB-USP, 05508-900, São Paulo, SP, Brazil
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45
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Current literature in mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2001; 36:225-235. [PMID: 11345053 DOI: 10.1002/jms.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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46
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Ramos L, Brignol N, Bakhtiar R, Ray T, Mc Mahon LM, Tse FL. High-throughput approaches to the quantitative analysis of ketoconazole, a potent inhibitor of cytochrome P450 3A4, in human plasma. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2000; 14:2282-2293. [PMID: 11114039 DOI: 10.1002/1097-0231(20001215)14:23<2282::aid-rcm164>3.0.co;2-v] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Ketoconazole, an imidazole-piperazine compound, is an orally active antimycotic agent. In addition, ketoconazole is a specific inhibitor of cytochrome P450 3A4. As about 60% of oxidized drugs are biotransformed by this isoform, the potential effect of a concomitant administration of ketoconazole on drug disposition may be of interest during drug development. The present paper describes three different approaches (methods A, B, and C) to attain high-throughput sample preparation and analysis in the quantification of ketoconazole in human plasma. Method A consisted of acetonitrile precipitation in a 96-well plate, transfer of the supernatant via a Tomtec Quadra 96 Model 320, and subsequent injection onto a 50 x 4.6 mm (i.d.) Develosil Combi-RP-5 column (packed with C30 bonded silica particles). Method B consisted of an identical sample preparation to method A with the exception that a Michrom Magic Bullet(trade mark) column, 2.0 --> 0.50 mm (i.d., tapered bore) x25 mm length, was used. Lastly, in method C, a turbulent-flow chromatography (TurboFlow LC/APCI-MS/MS) module was used for the direct analysis of ketoconazole in human plasma. A Sciex API 3000 was used in methods A and B, while a Micromass Quattro LC was employed in method C. Based on the values obtained for the calibrator (standard) and quality control samples, all three protocols yielded satisfactory accuracy, precision, and reduced manual sample preparation time.
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Affiliation(s)
- L Ramos
- Department of Drug Metabolism & Pharmacokinetics, Novartis Institute for Biomedical Research, East Hanover, NJ 07936, USA
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