1
|
Briki M, Murisier A, Guidi M, Seydoux C, Buclin T, Marzolini C, Girardin FR, Thoma Y, Carrara S, Choong E, Decosterd LA. Liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) methods for the therapeutic drug monitoring of cytotoxic anticancer drugs: An update. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1236:124039. [PMID: 38490042 DOI: 10.1016/j.jchromb.2024.124039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/26/2024] [Accepted: 01/31/2024] [Indexed: 03/17/2024]
Abstract
In the era of precision medicine, there is increasing evidence that conventional cytotoxic agents may be suitable candidates for therapeutic drug monitoring (TDM)- guided drug dosage adjustments and patient's tailored personalization of non-selective chemotherapies. To that end, many liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) assays have been developed for the quantification of conventional cytotoxic anticancer chemotherapies, that have been comprehensively and critically reviewed. The use of stable isotopically labelled internal standards (IS) of cytotoxic drugs was strikingly uncommon, accounting for only 48 % of the methods found, although their use could possible to suitably circumvent patients' samples matrix effects variability. Furthermore, this approach would increase the reliability of cytotoxic drug quantification in highly multi-mediated cancer patients with complex fluctuating pathophysiological and clinical conditions. LC-MS/MS assays can accommodate multiplexed analyses of cytotoxic drugs with optimal selectivity and specificity as well as short analytical times and, when using stable-isotopically labelled IS for quantification, provide concentrations measurements with a high degree of certainty. However, there are still organisational, pharmacological, and medical constraints to tackle before TDM of cytotoxic drugs can be more largely adopted in the clinics for contributing to our ever-lasting quest to improve cancer treatment outcomes.
Collapse
Affiliation(s)
- M Briki
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland; Service of Clinical Pharmacology, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland; Bio/CMOS Interfaces Laboratory, École Polytechnique Fédérale de Lausanne-EPFL, 2002 Neuchâtel, Switzerland
| | - A Murisier
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - M Guidi
- Service of Clinical Pharmacology, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, University of Lausanne, 1206 Geneva, Switzerland; Centre for Research and Innovation in Clinical Pharmaceutical Sciences, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - C Seydoux
- Internal Medicine Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - T Buclin
- Service of Clinical Pharmacology, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - C Marzolini
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - F R Girardin
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland; Service of Clinical Pharmacology, Department of Medicine, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - Y Thoma
- School of Engineering and Management Vaud, HES-SO University of Applied Sciences and Arts Western Switzerland, 1401 Yverdon-les-Bains, Switzerland
| | - S Carrara
- Bio/CMOS Interfaces Laboratory, École Polytechnique Fédérale de Lausanne-EPFL, 2002 Neuchâtel, Switzerland
| | - E Choong
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
| | - L A Decosterd
- Laboratory of Clinical Pharmacology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland.
| |
Collapse
|
2
|
Schofield RC, Scordo M, Shah G, Carlow DC. Measurement of ThioTEPA and Its Metabolite TEPA in Plasma and Cerebrospinal Fluid by Turbulent Flow Chromatography-Tandem Mass Spectrometry. Methods Mol Biol 2024; 2737:423-433. [PMID: 38036843 DOI: 10.1007/978-1-0716-3541-4_39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
N,N',N''-Triethylenethiophosphoramide (thioTEPA) is a polyfunctional, organophosphorus alkylating agent that has been a primary treatment of multiple solid malignancies for many years and more recently as part of conditioning regimens prior to hematopoietic stem cell transplantation for a variety of hematologic malignancies. In vivo, thioTEPA is quickly metabolized to N,N',N″-triethylenephosphoramide (TEPA). ThioTEPA and TEPA have similar alkylating activity and both exhibit outstanding central nervous system penetration. Therefore, it is possible and desirable to monitor both compounds in plasma and cerebrospinal fluid (CSF).This chapter describes a method to measure both compounds simultaneously. ThioTEPA and TEPA are extracted with solvent from plasma and CSF by the addition of deuterated internal standards prepared in methanol. Chromatographic separation is attained using a C18 column and mass spectrometry which is performed in the positive ion mode. Herein, we describe a fast, accurate, and sensitive assay to quantify both compounds in plasma and CSF by turbulent flow LC-MS/MS which allows for fast and accurate therapeutic drug monitoring and timely dose modifications.
Collapse
Affiliation(s)
- Ryan C Schofield
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael Scordo
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Gunjan Shah
- Adult Bone Marrow Transplant Service, Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Dean C Carlow
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
| |
Collapse
|
3
|
Silva LP, Yamamoto PA, Machado MCDA, Neves FMF, Azeredo FJ, Dos Santos Silva ACS, Hlavac N, de Melo Soares D, Godoy ALPC, Estrela-Lima A. A pilot study of chemotherapy combinations in rats: Focus on mammary cancer treatment in female dogs. Res Vet Sci 2023; 156:14-21. [PMID: 36738520 DOI: 10.1016/j.rvsc.2023.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 12/03/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
The use of combined chemotherapy is an essential alternative in treating breast cancer. However, knowledge of the pharmacokinetics of drugs is necessary to obtain maximum efficiency of the protocol and reduce adverse reactions. This study suggests for the first time the effect of the association of carboplatin with ivermectin and carboplatin with cyclophosphamide. This investigation was performed with 36 healthy Wistar rats, divided into four groups: group control, carboplatin (C), carboplatin preceded by ivermectin (C + IV), and carboplatin associated with cyclophosphamide (C + CI). Plasma concentrations quantification was performed using the High-Performance Liquid Chromatographic (HPLC) equipment with an Ultraviolet (UV) detector at eight different time points. Then, the animal was euthanized and necropsied. The bioanalytical method was validated for the two matrices (dogs and rats' plasma), with full validation in female dogs and partial validation in rats, as recommended by the EMA. In both matrices, the method was linear and reproducible. Here, we show the results in female rats' plasma. When comparing the experimental rats' groups (C; C + IV, and C + CI), there is a tendency to increase the bioavailability of carboplatin when used in association, a slight increase for C + IV and more evident to the C + CI group with an AUC rise higher than 2-fold (AUC0-∞ = 2983.61 for C; 4459.06 for C + CI; 7064.68 for C + CI min·mg·mL-1). The blood count, biochemistry profile, and histopathology of the organs revealed only alterations inherent to the metabolic effects of the drugs used. The carboplatin association with ivermectin appeared safe for this pilot group. We believe the carboplatin dose can be maintained without risk to the patient. However, in the carboplatin association with cyclophosphamide, a slight reduction in carboplatin's amount is suggested, seeking to avoid increased effects due to cyclophosphamide. Thus, studies with a more significant number per group must confirm the relevance of this pilot study.
Collapse
Affiliation(s)
- Laís Pereira Silva
- Graduate Program in Animal Science in the Tropics, School of Veterinary Medicine and Zootechny, Federal University of Bahia (UFBA), Salvador, Bahia, Brazil; Research Center on Mammary Oncology NPqOM/HOSPMEV, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Priscila Akemi Yamamoto
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Marilia Carneiro de Araújo Machado
- Research Center on Mammary Oncology NPqOM/HOSPMEV, Federal University of Bahia, Salvador, Bahia, Brazil; Faculty of Agricultural and Health Sciences, UNIFAS University Center, Metropolitan Union for the Development of Education and Culture (UNIME), Lauro de Freitas, Bahia, Brazil
| | | | - Francine Johansson Azeredo
- Pharmacy Graduate Program, Federal University of Bahia, Salvador, Bahia, Brazil; Center for Pharmacometrics and Systems Pharmacology, Department of Pharmaceutics, University of Florida, Orlando, FL, 32827, United States of America
| | | | - Nicole Hlavac
- Clinical Analysis Laboratory, Veterinary Medicine Hospital, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Denis de Melo Soares
- Pharmacy Graduate Program, Federal University of Bahia, Salvador, Bahia, Brazil; Department of Medicine, Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Ana Leonor Pardo Campos Godoy
- Pharmacy Graduate Program, Federal University of Bahia, Salvador, Bahia, Brazil; Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil.
| | - Alessandra Estrela-Lima
- Graduate Program in Animal Science in the Tropics, School of Veterinary Medicine and Zootechny, Federal University of Bahia (UFBA), Salvador, Bahia, Brazil; Research Center on Mammary Oncology NPqOM/HOSPMEV, Federal University of Bahia, Salvador, Bahia, Brazil; Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
| |
Collapse
|
4
|
Huang L, Winger BA, Cheah V, Gingrich D, Marzan F, Lu Y, Cooper JC, Aweeka F, Long-Boyle J. Quantification of N, N' N"-triethylenethiophosphoramide, N, N"-triethylenephosphoramide, cyclophosphamide, and 4-hydroxy-cyclophosphamide in microvolume human plasma to support neonatal and pediatric drug studies. JOURNAL OF CHROMATOGRAPHY OPEN 2022; 2:100054. [PMID: 35875822 PMCID: PMC9302610 DOI: 10.1016/j.jcoa.2022.100054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
N, N' N"-triethylenethiophosphoramide (thiotepa) and cyclophosphamide (CP) are alkylating agents used for a variety of malignant and non-malignant disorders. Both drugs are metabolized by cytochrome P450 enzymes to form active metabolites. To support pharmacokinetic studies of thiotepa and CP in children, we sought to develop assays to determine parent drug and metabolite concentration in small volume plasma samples. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used for assay development. CP metabolite 4-hydroxycyclophosphamide (4OHCP) was converted to the more stable semicarbazone derivative (4OHCP-SCZ) for quantitation. Samples (10 μL) were extracted by solid-phase extraction and injected onto the LC-MS/MS system equipped with a pentafluorophenyl reverse phase column (2.1 × 50 mm, 2.7 μm). Electrospray ionization in positive mode was used for detection. Multiple reaction monitoring of the precursor-to-product ion transitions m/z 190→147 for thiotepa, 174→131 for tepa, 261→233 for CP, and 334→221 for 4OHCP-SCZ was selected for quantification. The ion transitions m/z 202→155 for thiotepa-d12, 186→139 for tepa-d12, 267→237 for CP-d4, and 340→114 for 4OHCP-d4-SCZ were selected for the internal standard (IS) corresponding to each analyte. The less abundant IS ions from 37Cl were used for CP-d4 and 4OHCP-d4-SCZ to overcome the cross-talk interference from the analytes. Under optimized conditions, retention times were 0.67 min for tepa and its IS, 2.50 min for thiotepa and its IS, 2.52 min for 4OHCP-SCZ and its IS, and 2.86 min for CP and its IS. Total run time was 5 min per sample. The calibration ranges were 2.5-2,000ng/mL for thiotepa and tepa, 20-10,000ng/mL for CP and 20-5,000 ng/mL for 4OHCP; Dilution integrity for samples above the calibration range was validated with 10-fold dilution for thiotepa/tepa and 20-fold dilution for CP/4OHCP. Recoveries ranged from 86.3-93.4% for thiotepa, 86.3-89.0% for tepa, 90.2-107% for CP, and 99.3-115% for 4OHCP-SCZ. The IS normalized matrix effect was within (100±7) % for all 4 analytes. Plasma samples at room temperature were stable for at least 60 hours for thiotepa, 6 days for tepa, and 24 hours for CP and 4OHCP-SCZ. Plasma samples for thiotepa/tepa were stable after 4 freeze-thaw cycles, and for CP/4OHCP-SCZ were stable after 3 freeze-thaw cycles. The assays were validated and applied to clinical studies requiring small sample volumes.
Collapse
Affiliation(s)
- Liusheng Huang
- Drug Research Unit, Department of Clinical Pharmacy, University of California San Francisco, USA
| | | | - Vincent Cheah
- Drug Research Unit, Department of Clinical Pharmacy, University of California San Francisco, USA
| | - David Gingrich
- Drug Research Unit, Department of Clinical Pharmacy, University of California San Francisco, USA
| | - Florence Marzan
- Drug Research Unit, Department of Clinical Pharmacy, University of California San Francisco, USA
| | - Ying Lu
- Drug Research Unit, Department of Clinical Pharmacy, University of California San Francisco, USA
| | - Jennifer C. Cooper
- Department of Pediatrics, University of Colorado Anschutz Medical Campus
| | - Francesca Aweeka
- Drug Research Unit, Department of Clinical Pharmacy, University of California San Francisco, USA
| | - Janel Long-Boyle
- Drug Research Unit, Department of Clinical Pharmacy, University of California San Francisco, USA
| |
Collapse
|
5
|
Korany M, Ritacco I, Dabbish E, Sicilia E, Shoeib T. Analysis of the Fragmentation Pathways for the Collision-Induced Dissociation of Protonated Cyclophosphamide: A Mass Spectrometry and Quantum Mechanical Study. J Chem Inf Model 2022; 62:4411-4419. [PMID: 36083000 DOI: 10.1021/acs.jcim.2c00627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyclophosphamide is a well-known anticancer agent acting by means of DNA alkylation. Associated with its tumor selectivity, it also possesses a wide spectrum of toxicities. As the requirement of metabolic activation before cyclophosphamide exerts either its therapeutic or toxic effects is well recognized, research aiming at elucidating the pathways that lead to the activation of this drug is of key importance. This has created the necessity for developing an effective analytical method for detecting cyclophosphamide and its breakdown products. In this paper, an Acquity TQ tandem quadrupole mass spectrometer equipped with electrospray ionization in positive-ion mode was employed for detecting cyclophosphamide in its protonated form. The full-scan mass spectrum of cyclophosphamide shows two ion clusters displaying the characteristic isotopic pattern of two chlorine atoms and assigned as sodiated cyclophosphamide, [CP + Na]+, and protonated cyclophosphamide, [CP + H]+ or PCP. With the aid of quantum mechanical DFT calculation, free energy differences in the gas phase among PCP protomers were computed with respect to the most stable protomer being protonated on the 2-oxide oxygen of the 1,3,2-oxazaphosphorine-2-oxide ring. In addition, the interconversion mechanisms among the different protomers were also proposed by intercepting the corresponding transition states in the gas phase. Collision-induced dissociation (CID) of PCP generated six characteristic product ions. Fragmentation mechanisms were proposed and supported by computation. The calculated energy barriers for all of the located transition states were found to be accessible under the reported experimental conditions.
Collapse
Affiliation(s)
- Mohamed Korany
- Department of Chemistry, The American University in Cairo, New Cairo 11835, Egypt
| | - Ida Ritacco
- Dipartimento di Chimica e Biologia, Università degli Studi di Salerno, via Giovanni Paolo II 132, Fisciano, 84084 Salerno, Italy
| | - Eslam Dabbish
- Department of Chemistry, The American University in Cairo, New Cairo 11835, Egypt
| | - Emilia Sicilia
- Dipartimento di Chimica Università della Calabria, Via P. Bucci, cubo 14c, Arcavacata di Rende (CS), 87036 Cosenza, Italy
| | - Tamer Shoeib
- Department of Chemistry, The American University in Cairo, New Cairo 11835, Egypt
| |
Collapse
|
6
|
Cyclophosphamide, hydroxycyclophosphamide and carboxyethyl phosphoramide mustard quantification with Liquid Chromatography mass spectrometry in a single run human plasma samples: A rapid and sensitive method development. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1198:123228. [DOI: 10.1016/j.jchromb.2022.123228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/09/2022] [Accepted: 03/12/2022] [Indexed: 11/22/2022]
|
7
|
Handling unstable analytes: literature review and expert panel survey by Japan Bioanalysis Forum Discussion Group. Bioanalysis 2021; 14:169-185. [PMID: 34894755 DOI: 10.4155/bio-2021-0229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Analyzing unstable small molecule drugs and metabolites in blood continues to be challenging for bioanalysis. Although scientific countermeasures such as immediate cooling, immediate freezing, addition of enzyme inhibitors, pH adjustment, dried blood spot or derivatization have been developed, selecting the best practices has become an issue in the pharmaceutical industry as the number of drugs with such problems is increasing, even for generic drugs. In this study, we conducted a comprehensive literature review and a questionnaire survey to determine a suitable practice for evaluating instability and implementing countermeasures. Three areas of focus, matrix selection, effect of hemolysis and selection of esterase inhibitors, are discussed.
Collapse
|
8
|
Hasanah YIF, Harahap Y, Purwanto DJ. Phenotyping Study of Cyclophosphamide 4-Hydroxylation in Malay Cancer Patients. Drug Des Devel Ther 2021; 15:305-313. [PMID: 33536743 PMCID: PMC7849187 DOI: 10.2147/dddt.s279128] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 12/24/2020] [Indexed: 12/18/2022] Open
Abstract
Background Cyclophosphamide (CP) is an anticancer alkylating group (nitrogen mustard) and a prodrug that will be metabolized to form its active metabolite, 4-hydroxycyclophosphamide (4-OHCP). The various enzymes involved in its bioactivation can cause a wide range of CP expression and activity among patients and ultimately affect the metabolism, efficacy and toxicity of this drug. The effectiveness of CP therapy can be determined by 4-OHCP level in dried blood spot (DBS). Aim The purpose of this study was to conduct the phenotyping of CP 4-hydroxylation rate in Malay cancer patients. Methodology Phenotyping study of CP 4-hydroxylation rate to 40 subjects of Malay cancer patients was done based on the value of its bioactivity ratio (4-OHCP to CP levels). Results The result shown the cyclophosphamide 4-hydroxylation rate of 80% (n=32) subjects as ultrarapid metabolizer (UM) and 20% (n=8) as poor metabolizer (PM). Conclusion Phenotyping study of CP 4-hydroxylation in Malay cancer patients can be conducted by quantifying CP bioactivity ratio (4-OHCP to CP level) in dried blood spot. In majority of Malay cancer patients, cyclophosphamide would be bioactivated through 4-hydroxylation in hepar rapidly as indicated by the high value of the bioactivity ratio or the increased CP clearance and 4-OHCP level.
Collapse
Affiliation(s)
| | - Yahdiana Harahap
- Bioavailability and Bioequivalence Laboratory, Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia.,Indonesia Defense University, Bogor 16810, West Java, Indonesia
| | - Denni Joko Purwanto
- Functional Medical Staff of Surgical Oncology, Dharmais Cancer Hospital, Jakarta, Indonesia
| |
Collapse
|
9
|
P S S, Trivedi RK, Srinivas NR, Mullangi R. A review of bioanalytical methods for chronic lymphocytic leukemia drugs and metabolites in biological matrices. Biomed Chromatogr 2019; 34:e4742. [PMID: 31749152 DOI: 10.1002/bmc.4742] [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: 09/29/2019] [Revised: 10/24/2019] [Accepted: 10/30/2019] [Indexed: 12/31/2022]
Abstract
Quantitation of drugs used for the treatment of chronic lymphocytic leukemia in various biological matrices during both pre-clinical and clinical developments is very important, often in routine therapeutic drug monitoring. The first developed methods for quantitation were traditionally done on LC in combination with either UV or fluorescence detection. However, the emergence of LC with mass spectrometry in tandem in early 1990s has revolutionized the quantitation as it has provided better sensitivity and selectivity within a shorter run time; therefore it has become the choice of method for the analysis of various drugs. In this article, an overview of various bioanalytical methods (HPLC or LC-MS/MS) for the quantification of drugs for the treatment of chronic lymphocytic leukemia, along with applicability of these methods, is given.
Collapse
Affiliation(s)
- Suresh P S
- Jubilant Biosys, 2nd Stage, Bangalore, India
| | | | | | | |
Collapse
|
10
|
Stroda KA, Murphy JD, Hansen RJ, Brownlee L, Atencio EA, Gustafson DL, Lana SE. Pharmacokinetics of cyclophosphamide and 4-hydroxycyclophosphamide in cats after oral, intravenous, and intraperitoneal administration of cyclophosphamide. Am J Vet Res 2017. [PMID: 28650232 DOI: 10.2460/ajvr.78.7.862] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To characterize pharmacokinetics of cyclophosphamide and 4-hydoxycyclophosphamide (4-OHCP) in the plasma of healthy cats after oral, IV, and IP administration of cyclophosphamide. ANIMALS 6 healthy adult cats. PROCEDURES Cats were randomly assigned to receive cyclophosphamide (200 mg/m2) via each of 3 routes of administration (oral, IV, and IP); there was a 30-day washout period between successive treatments. Plasma samples were obtained at various time points for up to 8 hours after administration. Samples were treated with semicarbazide hydrochloride to trap the 4-OHCP in stable form, which allowed for cyclophosphamide and trapped 4-OHCP to be simultaneously measured by use of tandem mass spectrometry. Pharmacokinetic parameters were determined from drug concentration-versus-time data for both cyclophosphamide and 4-OHCP. RESULTS Cyclophosphamide was tolerated well regardless of route of administration. Pharmacokinetic parameters for 4-OHCP were similar after oral, IV, and IP administration. Area under the concentration-time curve for cyclophosphamide was lower after oral administration than after IV or IP administration. CONCLUSIONS AND CLINICAL RELEVANCE Cyclophosphamide can be administered interchangeably to cats as oral, IV, and IP formulations, which should provide benefits with regard to cost and ease of administration to certain feline patients.
Collapse
|
11
|
Guichard N, Guillarme D, Bonnabry P, Fleury-Souverain S. Antineoplastic drugs and their analysis: a state of the art review. Analyst 2017; 142:2273-2321. [DOI: 10.1039/c7an00367f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We provide an overview of the analytical methods available for the quantification of antineoplastic drugs in pharmaceutical formulations, biological and environmental samples.
Collapse
Affiliation(s)
- Nicolas Guichard
- Pharmacy
- Geneva University Hospitals (HUG)
- Geneva
- Switzerland
- School of Pharmaceutical Sciences
| | - Davy Guillarme
- School of Pharmaceutical Sciences
- University of Geneva
- University of Lausanne
- Geneva
- Switzerland
| | - Pascal Bonnabry
- Pharmacy
- Geneva University Hospitals (HUG)
- Geneva
- Switzerland
- School of Pharmaceutical Sciences
| | | |
Collapse
|
12
|
Müller-Ramírez C, Squibb K, McDiarmid M. Accessible analytical methodology for assessing workplace contamination of antineoplastic drugs in limited-resource oncology health-care settings. J Anal Sci Technol 2016. [DOI: 10.1186/s40543-016-0091-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
13
|
A critical review of microextraction by packed sorbent as a sample preparation approach in drug bioanalysis. Bioanalysis 2013; 5:1409-42. [DOI: 10.4155/bio.13.92] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Sample preparation is widely accepted as the most labor-intensive and error-prone part of the bioanalytical process. The recent advances in this field have been focused on the miniaturization and integration of sample preparation online with analytical instrumentation, in order to reduce laboratory workload and increase analytical performance. From this perspective, microextraction by packed sorbent (MEPS) has emerged in the last few years as a powerful sample preparation approach suitable to be easily automated with liquid and gas chromatographic systems applied in a variety of bioanalytical areas (pharmaceutical, clinical, toxicological, environmental and food research). This paper aims to provide an overview and a critical discussion of recent bioanalytical methods reported in literature based on MEPS, with special emphasis on those developed for the quantification of therapeutic drugs and/or metabolites in biological samples. The advantages and some limitations of MEPS, as well as its comparison with other extraction techniques, are also addressed herein.
Collapse
|
14
|
Therapeutic drug monitoring and LC–MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 883-884:33-49. [DOI: 10.1016/j.jchromb.2011.09.041] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 09/14/2011] [Accepted: 09/22/2011] [Indexed: 11/24/2022]
|
15
|
Blotevogel J, Borch T. Determination of hexamethylphosphoramide and other highly polar phosphoramides in water samples using reversed-phase liquid chromatography/electrospray ionization time-of-flight mass spectrometry. J Chromatogr A 2011; 1218:6426-32. [DOI: 10.1016/j.chroma.2011.07.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 07/06/2011] [Accepted: 07/07/2011] [Indexed: 10/17/2022]
|
16
|
Analysis of anticancer drugs: a review. Talanta 2011; 85:2265-89. [PMID: 21962644 DOI: 10.1016/j.talanta.2011.08.034] [Citation(s) in RCA: 325] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 08/15/2011] [Accepted: 08/16/2011] [Indexed: 01/05/2023]
Abstract
In the last decades, the number of patients receiving chemotherapy has considerably increased. Given the toxicity of cytotoxic agents to humans (not only for patients but also for healthcare professionals), the development of reliable analytical methods to analyse these compounds became necessary. From the discovery of new substances to patient administration, all pharmaceutical fields are concerned with the analysis of cytotoxic drugs. In this review, the use of methods to analyse cytotoxic agents in various matrices, such as pharmaceutical formulations and biological and environmental samples, is discussed. Thus, an overview of reported analytical methods for the determination of the most commonly used anticancer drugs is given.
Collapse
|
17
|
Warry E, Hansen RJ, Gustafson DL, Lana SE. Pharmacokinetics of cyclophosphamide after oral and intravenous administration to dogs with lymphoma. J Vet Intern Med 2011; 25:903-8. [PMID: 21564295 DOI: 10.1111/j.1939-1676.2011.0730.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Cyclophosphamide is an alkylating chemotherapeutic drug administered i.v. or p.o.. It is currently assumed that exposure to the active metabolite, 4-hydroxycyclophosphamide (4-OHCP), is the same with either route of administration. OBJECTIVES To characterize the pharmacokinetics of cyclophosphamide and 4-OHCP in dogs with lymphoma when administered p.o. or i.v.. ANIMALS Sixteen client-owned dogs with substage A lymphoma were enrolled in the study. Eight dogs received cyclophosphamide i.v. and 8 received it p.o.. METHODS Prospective randomized clinical trial was performed. Blood was collected from each dog at specific time points after administration of cyclophosphamide. The serum was evaluated for the concentration of cyclophosphamide and 4-OHCP with mass spectrometry and liquid chromatography. RESULTS Drug exposure to cyclophosphamide measured by area under the curve (AUC)(0-inf) is significantly higher after intravenous administration (7.14 ± 3.77 μg/h/mL) compared with exposure after oral administration (P-value < .05). No difference in drug exposure to 4-OHCP was detected after i.v. (1.66 ± 0.36 μg/h/mL) or p.o. (1.42 ± 0.64 μg/h/mL) administered cyclophosphamide. CONCLUSIONS AND CLINICAL IMPORTANCE Drug exposure to the active metabolite 4-OHCP is equivalent after administration of cyclophosphamide either p.o. or i.v..
Collapse
Affiliation(s)
- E Warry
- Animal Cancer Center, Colorado State University, Fort Collins, CO 80523-1620, USA.
| | | | | | | |
Collapse
|
18
|
Shu W, Wang X, Yang X, Liang L, Li J, Chen Z, Chen X, Jin J, Li R, Zhao L, Huang M. Simultaneous determination of cyclophosphamide and 4-hydroxycyclophosphamide in human plasma by high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry – application to Chinese systemic lupus erythematosus patients. ACTA ACUST UNITED AC 2011; 49:2029-37. [DOI: 10.1515/cclm.2011.710] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Indexed: 01/04/2023]
Abstract
AbstractA pharmacogenomics study of cyclophosphamide in systemic lupus erythematosus patients is being conducted in our laboratory in which the plasma concentrations of cyclophosphamide and its active metabolite 4-hydroxycyclophosphamide should be assayed rapidly and sensitively.A rapid, stable and sensitive liquid chromato-graphy/electrospray ionization tandem mass spectrometry method was developed to simultaneously determine cyclophosphamide and 4-hydroxycyclophosphamide in human plasma with ifosfomide as an internal standard. After a protein precipitation with cold acetonitrile and stabilization of 4-hydroxycyclophosphamide by ansyldrazine and extraction with ethyl acetate, separation was performed on a C18 3.5 μm 2.1×50 mm column with mobile phase of acetonitrile and water (50:50, v/v) with 0.1% formic acid at 200 μL/min. The chromatographic run time was 3 min.The linear calibration curves ranged from 5 to 5000 ng/mL for cyclophosphamide and 5–500 ng/mL for 4-hydroxycyclophosphamide. The recoveries of the liquid extraction were 54.5%–58.5% for cyclophosphamide and 103.5%–105.5% for 4-hydroxycyclophosphamide. The lower limit of quantification was 5 ng/mL for both analytes. The intra- and inter-day precision was <15% for quality control samples at 4000, 500, 50 ng/mL for cyclophosphamide and 4-hydroxycyclophosphamide at 400, 100, 20 ng/mL. The method was applied in this pharmacogenomics study in Chinese systemic lupus erythematosus patients treated with low-dose cyclophosphamide.The method was efficient with shorter running time and lower limit of quantification compared to previous reports and has been successfully applied in this pharmacogenomics study.
Collapse
|
19
|
Pretty JR, Connor TH, Spasojevic I, Kurtz KS, McLaurin JL, B'Hymer C, Debord DG. Sampling and mass spectrometric analytical methods for five antineoplastic drugs in the healthcare environment. J Oncol Pharm Pract 2010; 18:23-36. [PMID: 21183556 DOI: 10.1177/1078155210389215] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
CONTEXT Healthcare worker exposure to antineoplastic drugs continues to be reported despite safe handling guidelines published by several groups. Sensitive sampling and analytical methods are needed so that occupational safety and health professionals may accurately assess environmental and biological exposure to these drugs in the workplace. OBJECTIVE To develop liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) analytical methods for measuring five antineoplastic drugs in samples from the work environment, and to apply these methods in validating sampling methodology. A single method for quantifying several widely used agents would decrease the number of samples required for method development, lower cost, and time of analysis. METHODS for measuring these drugs in workers' urine would also be useful in monitoring personal exposure levels. RESULTS LC-MS/MS methods were developed for individual analysis of five antineoplastic drugs in wipe and air sample media projected for use in field sampling: cyclophosphamide, ifosfamide, paclitaxel, doxorubicin, and 5-fluorouracil. Cyclophosphamide, ifosfamide, and paclitaxel were also measured simultaneously in some stages of the work. Extraction methods for air and wipe samples were developed and tested using the aforementioned analytical methods. Good recoveries from the candidate air and wipe sample media for most of the compounds, and variable recoveries for test wipe samples depending on the surface under study, were observed. Alternate LC-MS/MS methods were also developed to detect cyclophosphamide and paclitaxel in urine samples. CONCLUSIONS The sampling and analytical methods were suitable for determining worker exposure to antineoplastics via surface and breathing zone contamination in projected surveys of healthcare settings.
Collapse
Affiliation(s)
- Jack R Pretty
- Division of Applied Research and Technology, National Institute for Occupational Safety and Health, U.S. Centers for Disease Control and Prevention, Cincinnati, OH 45226, USA.
| | | | | | | | | | | | | |
Collapse
|
20
|
Abdel-Rehim M. Recent advances in microextraction by packed sorbent for bioanalysis. J Chromatogr A 2010; 1217:2569-80. [DOI: 10.1016/j.chroma.2009.09.053] [Citation(s) in RCA: 195] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Revised: 09/15/2009] [Accepted: 09/21/2009] [Indexed: 10/20/2022]
|
21
|
De Miranda Silva C, Dumêt Fernandes BJ, Marques Pereira MP, Da Silva LM, Donadi EA, Do Carmo Silva Matthes Â, Moreira De Andrade J, Lanchote VL. Determination of cyclophosphamide enantiomers in plasma by LC-MS/MS: Application to pharmacokinetics in breast cancer and lupus nephritis patients. Chirality 2009; 21:383-9. [DOI: 10.1002/chir.20596] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
22
|
Effect of eluent on the ionization process in liquid chromatography–mass spectrometry. J Chromatogr A 2009; 1216:685-99. [DOI: 10.1016/j.chroma.2008.08.095] [Citation(s) in RCA: 302] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Revised: 08/01/2008] [Accepted: 08/28/2008] [Indexed: 11/22/2022]
|
23
|
Ekhart C, Doodeman VD, Rodenhuis S, Smits PHM, Beijnen JH, Huitema ADR. Polymorphisms of drug-metabolizing enzymes (GST, CYP2B6 and CYP3A) affect the pharmacokinetics of thiotepa and tepa. Br J Clin Pharmacol 2008; 67:50-60. [PMID: 19076156 DOI: 10.1111/j.1365-2125.2008.03321.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
AIMS Thiotepa is widely used in high-dose chemotherapy. Previous studies have shown relations between exposure and severe organ toxicity. Thiotepa is metabolized by cytochrome P450 and glutathione S-transferase enzymes. Polymorphisms of these enzymes may affect elimination of thiotepa and tepa, its main metabolite. The purpose of this study was to evaluate effects of known allelic variants in CYP2B6, CYP3A4, CYP3A5, GSTA1 and GSTP1 genes on pharmacokinetics of thiotepa and tepa. METHODS White patients (n = 124) received a high-dose regimen consisting of cyclophosphamide, thiotepa and carboplatin as intravenous infusions. Genomic DNA was analysed using polymerase chain reaction and sequencing. Plasma concentrations of thiotepa and tepa were determined using validated GC and LC-MS/MS methods. Relations between allelic variants and elimination pharmacokinetic parameters were evaluated using nonlinear mixed effects modelling (nonmem). RESULTS The polymorphisms CYP2B6 C1459T, CYP3A4*1B, CYP3A5*3, GSTA1 (C-69T, G-52A) and GSTP1 C341T had a significant effect on clearance of thiotepa or tepa. Although significant, most effects were generally not large. Clearance of thiotepa and tepa was predominantly affected by GSTP1 C341T polymorphism, which had a frequency of 9.3%. This polymorphism increased non-inducible thiotepa clearance by 52% [95% confidence interval (CI) 41, 64, P < 0.001] and decreased tepa clearance by 32% (95% CI 29, 35, P < 0.001) in heterozygous patients, which resulted in an increase in combined exposure to thiotepa and tepa of 45% in homozygous patients. CONCLUSIONS This study indicates that the presently evaluated variant alleles explain only a small part of the substantial interindividual variability in thiotepa and tepa pharmacokinetics. Patients homozygous for the GSTP1 C341T allele may have enhanced exposure to thiotepa and tepa.
Collapse
Affiliation(s)
- Corine Ekhart
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Amsterdam, The Netherlands.
| | | | | | | | | | | |
Collapse
|
24
|
Sottani C, Rinaldi P, Leoni E, Poggi G, Teragni C, Delmonte A, Minoia C. Simultaneous determination of cyclophosphamide, ifosfamide, doxorubicin, epirubicin and daunorubicin in human urine using high-performance liquid chromatography/electrospray ionization tandem mass spectrometry: bioanalytical method validation. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:2645-2659. [PMID: 18666202 DOI: 10.1002/rcm.3657] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A reversed-phase high-performance liquid chromatography (rp-HPLC) system interfaced with an electrospray ionization (ESI) source coupled to tandem mass spectrometry (MS/MS) was developed and validated for the determination of cyclophosphamide (CP), ifosfamide (IF), daunorubicin (DNR), doxorubicin (DXR), and epirubicin (EPI) in human urine. The analysis of samples containing multiple analytes with a dissimilar range of polarities was carried out using a conventional reversed-phase chromatographic BDS Hypersil C8 column. The analytical run was 15 min. The triple quadrupole mass spectrometer was operated in positive ion mode and multiple reaction monitoring (MRM) was used for drug quantification. The method was validated over a concentration range of 0.2 to 4.0 microg.L(-1) for CP, IF, DXR, EPI and 0.15-2.0 microg.L(-1) for DNR in human urine. The lower limit of quantification (LLOQ) was 0.2 microg.L(-1) for CP, IF, EPI and was set at 0.3 and 0.15 microg.L(-1) for DXR and DNR, respectively. The relative standard deviations (RSD%) were <11.2% for inter- and intra-day precisions. The overall accuracy was also within 114.7% for all analytes at the concentrations of the quality control samples. The potential of ionization suppression resulting from the endogenous biological material on the rp-HPLC/MS/MS method was evaluated and measured. The feasibility of the proposed HPLC/ESI-MS/MS procedure was demonstrated by analyzing urine samples from pharmacy technicians and nurses working in hospitals or personnel employed in drug-manufacturing plants.
Collapse
Affiliation(s)
- Cristina Sottani
- Laboratory for Environmental and Toxicological Testing, IRCCS Pavia, S. Maugeri Foundation, via S. Maugeri 10, Pavia, Italy.
| | | | | | | | | | | | | |
Collapse
|
25
|
Influence of polymorphisms of drug metabolizing enzymes (CYP2B6, CYP2C9, CYP2C19, CYP3A4, CYP3A5, GSTA1, GSTP1, ALDH1A1 and ALDH3A1) on the pharmacokinetics of cyclophosphamide and 4-hydroxycyclophosphamide. Pharmacogenet Genomics 2008; 18:515-23. [PMID: 18496131 DOI: 10.1097/fpc.0b013e3282fc9766] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The anticancer agent, cyclophosphamide, is metabolized by cytochrome P450 (CYP), glutathione S-transferase (GST) and aldehyde dehydrogenase (ALDH) enzymes. Polymorphisms of these enzymes may affect the pharmacokinetics of cyclophosphamide and thereby its toxicity and efficacy. The purpose of this study was to evaluate the effects of known allelic variants in the CYP2B6, CYP2C9, CYP2C19, CYP3A4, CYP3A5, GSTA1, GSTP1, ALDH1A1 and ALDH3A1 genes on the pharmacokinetics of the anticancer agent, cyclophosphamide, and its active metabolite 4-hydroxycyclophosphamide. EXPERIMENTAL DESIGN A cohort of 124 Caucasian patients received a high-dose chemotherapy combination consisting of cyclophosphamide (4-6 g/m2), thiotepa (320-480 mg/m2) and carboplatin (area under the curve 13-20 mg x min/ml) as intravenous infusions over 4 consecutive days. Genomic DNA was analysed using PCR and sequencing. Liquid chromatography-tandem mass spectrometry was used to measure plasma concentrations of cyclophosphamide and 4-hydroxycyclophosphamide. The relationship between allelic variants and the elimination pharmacokinetic parameters noninducible cyclophosphamide clearance (CL(nonind)), inducible cyclophosphamide clearance (CL(ind)) and elimination rate constant of 4-hydroxycyclophosphamide (k(4OHCP)) were evaluated using nonlinear mixed effects modelling. RESULTS The interindividual variability in the noninducible cyclophosphamide clearance, inducible cyclophosphamide clearance and 4-hydroxycyclophosphamide clearance was 23, 27 and 31%, respectively. No effect of the allelic variants investigated on the clearance of cyclophosphamide or 4-hydroxycyclophosphamide could be demonstrated. CONCLUSION This study indicates that the presently evaluated variant alleles in the CYP2B6, CYP2C9, CYP2C19, CYP3A4, CYP3A5, GSTA1, GSTP1, ALDH1A1 and ALDH3A1 genes do not explain the interindividual variability in cyclophosphamide and 4-hydroxycyclophosphamide pharmacokinetics and are, probably, not the cause of the observed variability in toxicity.
Collapse
|
26
|
Said R, Hassan Z, Hassan M, Abdel‐Rehim M. Rapid and Sensitive Method for Determination of Cyclophosphamide in Patients Plasma Samples Utilizing Microextraction by Packed Sorbent Online with Liquid Chromatography‐Tandem Mass Spectrometry (MEPS‐LC‐MS/MS). J LIQ CHROMATOGR R T 2008. [DOI: 10.1080/10826070701853867] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Rana Said
- a Experimental Cancer Medicine KFC Novum Karolinska University Hospital Huddinge , Stockholm, Sweden
- b Department of Laboratory Medicine , Karolinska Institutet , Stockholm, Sweden
| | - Zuzan Hassan
- a Experimental Cancer Medicine KFC Novum Karolinska University Hospital Huddinge , Stockholm, Sweden
- b Department of Laboratory Medicine , Karolinska Institutet , Stockholm, Sweden
| | - Moustapha Hassan
- a Experimental Cancer Medicine KFC Novum Karolinska University Hospital Huddinge , Stockholm, Sweden
- b Department of Laboratory Medicine , Karolinska Institutet , Stockholm, Sweden
| | - Mohamed Abdel‐Rehim
- c Department of Development DMPK & Bioanalysis , AstraZeneca R&D Södertälje , Sweden
- d Department of Chemistry & Biomedical Sciences , Karlstad University , Karlstad, Sweden
| |
Collapse
|
27
|
DiFrancesco R, Griggs JJ, Donnelly J, DiCenzo R. Simultaneous analysis of cyclophosphamide, doxorubicin and doxorubicinol by liquid chromatography coupled to tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 852:545-53. [PMID: 17379584 DOI: 10.1016/j.jchromb.2007.02.033] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2006] [Revised: 01/29/2007] [Accepted: 02/09/2007] [Indexed: 11/15/2022]
Abstract
A method for the simultaneous determination of cyclophosphamide (CP), doxorubicin (dox), and doxorubicinol (dol) was developed and validated to analyze 400 microL of plasma from patients receiving chemotherapeutic treatment with CP and dox. Final calibration ranges for the analytes were 0.440-60.0 microg/mL for cyclophosphamide, 7.20-984 ng/mL for dox and 3.04-104 ng/mL for dol. The samples were prepared using solid phase extraction and analyzed using a gradient separation over a Waters Symmetry C18, 2.1 by 30 mm (Milford, MA) column. Detection was achieved in positive mixed reaction monitoring mode on a triple quadrupole mass spectrometer.
Collapse
Affiliation(s)
- Robin DiFrancesco
- Department of Pharmacy Practice, University at Buffalo, 311 Hochstetter Hall, Buffalo, NY 14260, USA.
| | | | | | | |
Collapse
|
28
|
Ekhart C, Gebretensae A, Rosing H, Rodenhuis S, Beijnen JH, Huitema ADR. Simultaneous quantification of cyclophosphamide and its active metabolite 4-hydroxycyclophosphamide in human plasma by high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry (LC-MS/MS). J Chromatogr B Analyt Technol Biomed Life Sci 2007; 854:345-9. [PMID: 17485255 DOI: 10.1016/j.jchromb.2007.04.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2007] [Revised: 04/05/2007] [Accepted: 04/14/2007] [Indexed: 11/27/2022]
Abstract
Cyclophosphamide is a cytotoxic prodrug with a very narrow therapeutic index. To study the clinical pharmacology of cyclophosphamide in a large cohort of patients a previously published method for the simultaneous quantitative determination of cyclophosphamide and 4-hydroxycyclophosphamide in human plasma using liquid chromatography tandem mass spectrometry (LC-MS/MS) was optimized. Addition of an isotopically labelled internal standard and adaptation of the gradient resulted in a fast, robust and sensitive assay. Because 4-hydroxycyclophosphamide is not stable in plasma, the compound is derivatized with semicarbazide immediately after sample collection. Sample preparation was carried out by protein precipitation with methanol-acetonitrile (1:1, v/v), containing isotopically labelled cyclophosphamide and hexamethylphosphoramide as internal standards. The LC separation was performed on a Zorbax Extend C18 column (150 mm x 2.1 mm ID, particle size 5 microm) with 1 mM ammonium hydroxide in water-acetonitrile (90:10, v/v) as the starting gradient, at a flow-rate of 0.40 mL/min with a total run time of 6 min. The lower limit of quantification (LLQ, using a 100 microL sample volume) was 200 ng/mL and the linear dynamic range extended to 40,000 ng/mL for cyclophosphamide and 50-5000 ng/mL for 4-hydroxycyclophosphamide. Accuracies as well as precisions were lower than 20% at the LLQ concentration and lower than 15% for all other concentrations. This method has been successfully applied in our institute to support ongoing studies into the pharmacokinetics and pharmacogenetics of cyclophosphamide.
Collapse
Affiliation(s)
- Corine Ekhart
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Louwesweg 6, 1066 EC Amsterdam, The Netherlands.
| | | | | | | | | | | |
Collapse
|
29
|
11 HPLC method development for drug discovery LC-MS assays in rapid PK applications. SEP SCI TECHNOL 2007. [DOI: 10.1016/s0149-6395(07)80017-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register]
|
30
|
Kalhorn TF, Howald WN, Cole S, Phillips B, Wang J, Slattery JT, McCune JS. Rapid quantitation of cyclophosphamide metabolites in plasma by liquid chromatography–mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 835:105-13. [PMID: 16581318 DOI: 10.1016/j.jchromb.2006.03.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2005] [Revised: 03/01/2006] [Accepted: 03/09/2006] [Indexed: 11/21/2022]
Abstract
A method is described for the quantification of two metabolites of cyclophosphamide, specifically 4-hydroxycyclophosphamide (HCy), and carboxyethylphosphoramide mustard (CEPM). Plasma HCy is derivatized to the phenylhydrazone which is quantitated by LC-MS monitoring the chloride adduct of the derivative. The LLOQ based on material applied to the system is approximately 20 fmol. Plasma CEPM concentration is determined using LC-MS with a deuterated internal standard. Both assays have 50-fold dynamic range and require less than 4h to complete. The development of this rapid analytical method makes it feasible to adjust the dose of cyclophosphamide based on the pharmacokinetic disposition of HCy and CEPM in hopes of decreasing nonrelapse mortality in cancer patients.
Collapse
Affiliation(s)
- Thomas F Kalhorn
- University of Washington Mass Spectrometry Center, Box 357610, Seattle, 98195, USA
| | | | | | | | | | | | | |
Collapse
|
31
|
Abstract
Cyclophosphamide is an extensively used anticancer and immunosuppressive agent. It is a prodrug undergoing a complicated process of metabolic activation and inactivation. Technical difficulties in the accurate determination of the cyclophosphamide metabolites have long hampered the assessment of the clinical pharmacology of this drug. As these techniques are becoming increasingly available, adequate description of the pharmacokinetics of cyclophosphamide and its metabolites has become possible. There is incomplete understanding on the role of cyclophosphamide metabolites in the efficacy and toxicity of cyclophosphamide therapy. However, relationships between toxicity (cardiotoxicity, veno-occlusive disease) and exposure to cyclophosphamide and its metabolites have been established. Variations in the balance between metabolic activation and inactivation of cyclophosphamide owing to autoinduction, dose escalation, drug-drug interactions and individual differences have been reported, suggesting possibilities for optimisation of cyclophosphamide therapy. Knowledge of the pharmacokinetics of cyclophosphamide, and possibly monitoring the pharmacokinetics of cyclophosphamide in individuals, may be useful for improving its therapeutic index.
Collapse
Affiliation(s)
- Milly E de Jonge
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Amsterdam, The Netherlands.
| | | | | | | |
Collapse
|
32
|
Barbieri A, Sabatini L, Indiveri P, Bonfiglioli R, Lodi V, Violante FS. Simultaneous determination of low levels of methotrexate and cyclophosphamide in human urine by micro liquid chromatography/electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:1889-93. [PMID: 16715479 DOI: 10.1002/rcm.2527] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The aim of this study was to develop and validate a novel solid-phase extraction (SPE) liquid chromatography/tandem mass spectrometry (LC/MS/MS) method for the simultaneous determination of two antineoplastic drugs, cyclophosphamide (CP) and methotrexate (MTX), in human urine using trophosphamide as internal standard. The method showed good precision and accuracy (mean RSD 2.8% and 0.9%; bias 2.7% and 2.4% for MTX and CP, respectively). The lower limits of detection obtained, 0.2 microg/L(urine) for MTX and 0.04 microg/L(urine) for CP, were lower than the best previously reported values. The use of a 96-well SPE plate for matrix purification ensures a high throughput (50 samples/day), allowing the routine biological monitoring of CP and MTX as measures of occupational exposure at very low levels.
Collapse
Affiliation(s)
- Anna Barbieri
- Safety, Hygiene and Occupational Medicine Service, University of Bologna, via Palagi 9, 40138 Bologna, Italy.
| | | | | | | | | | | |
Collapse
|
33
|
Stokvis E, Rosing H, Beijnen JH. Liquid chromatography-mass spectrometry for the quantitative bioanalysis of anticancer drugs. MASS SPECTROMETRY REVIEWS 2005; 24:887-917. [PMID: 15599948 DOI: 10.1002/mas.20046] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The monitoring of anticancer drugs in biological fluids and tissues is important during both pre-clinical and clinical development and often in routine clinical use. Traditionally, liquid chromatography (LC) in combination with ultraviolet (UV), fluorescence, or electrochemical detection is employed for this purpose. The successful hyphenation of LC and mass spectrometry (MS), however, has dramatically changed this. MS detection provides better sensitivity and selectivity than UV detection and, in addition, is applicable to a significantly larger group of compounds than fluorescence or electrochemical detection. Therefore, LC-MS has now become the method of first choice for the quantitative bioanalysis of many anticancer agents. There are still, however, a lot of new developments to be expected in this area, such as the introduction of more sensitive and robust mass spectrometers, high-throughput analyses, and further optimization of the coupled LC systems. Many articles have appeared in this field in recent years and are reviewed here. We conclude that LC-MS is an extremely powerful tool for the quantitative analysis of anticancer drugs in biological samples.
Collapse
Affiliation(s)
- Ellen Stokvis
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Louwesweg 6, 1066 EC Amsterdam, The Netherlands.
| | | | | |
Collapse
|
34
|
de Jonge ME, Huitema ADR, Rodenhuis S, Beijnen JH. Sparse Sampling Design for Therapeutic Drug Monitoring of Sequentially Administered Cyclophosphamide, Thiotepa, and Carboplatin (CTC). Ther Drug Monit 2005; 27:393-402. [PMID: 15905813 DOI: 10.1097/01.ftd.0000158081.38330.5e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The alkylating agents cyclophosphamide, thiotepa, and carboplatin (CTC) are administered simultaneously in high-dose chemotherapy regimens. This regimen is sometimes complicated by severe organ toxicities, which may be caused by interindividual variability in the pharmacokinetics of the agents. Monitoring plasma levels and adapting doses may reduce variability in exposure to the compounds and their metabolites. The aim of this study was to develop and validate a sparse sampling design for routine dose individualization of cyclophosphamide, thiotepa, and carboplatin both during and between courses in the CTC regimen. Models describing the population pharmacokinetics of the prodrug cyclophosphamide (4000 or 6000 mg/m) and its activated metabolite 4-hydroxycylophosphamide, thiotepa (320 or 480 mg/m), and its equipotent metabolite tepa, and carboplatin (1067 or 1600 mg/m) in the 4-day CTC regimen have been developed previously using the program NONMEM. Based on these models, plasma concentrations were calculated in 20 groups of 50 simulated patients in each group during multiple courses of therapy, and the exposure, expressed as area under the plasma concentration-versus-time curve (AUC), was calculated. Subsequently, individual model-predicted AUCs were calculated for all courses, based on selected simulated plasma concentrations during the first course of therapy. Strategies were compared by assessment of their predictive performance of the AUC and their applicability in clinical practice. Withdrawal of 3 samples on the first day of the course at 190, 290, and 400 minutes after start of cyclophosphamide infusion resulted in unbiased and precise first course AUC predictions of 4-hydroxycylophosphamide, thiotepa and tepa, and carboplatin (precision [root mean squared relative prediction error, %RMSE] 20%, 16%, 8.8%, respectively). Applying this same strategy at day 3 (or 4) of the course, with an additional sample at 600 minutes on both days, resulted in unbiased and precise predictions of the AUC of a following course (%RMSE 21%, 18%, 17%, respectively). Prospective validation of the strategies in 23 additional patients yielded comparable results. It can be concluded that a good and useful sparse sampling design was developed for precise and accurate estimation of the AUCs of 4-hydroxycyclophosphamide, thiotepa and tepa, and carboplatin in the CTC regimen. This method is valuable in pharmacokinetically guided dose adaptation both during and between CTC courses.
Collapse
Affiliation(s)
- Milly E de Jonge
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Louwesweg 6, 1066 EC, Amsterdam, The Netherlands.
| | | | | | | |
Collapse
|
35
|
de Jonge ME, Huitema ADR, Holtkamp MJ, van Dam SM, Beijnen JH, Rodenhuis S. Aprepitant inhibits cyclophosphamide bioactivation and thiotepa metabolism. Cancer Chemother Pharmacol 2005; 56:370-8. [PMID: 15838656 DOI: 10.1007/s00280-005-1005-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2004] [Accepted: 02/08/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Patients receiving the highly emetogenic high-dose chemotherapy regimen with cyclophosphamide, thiotepa and carboplatin (CTC) may benefit from the neurokin-1 receptor antagonist aprepitant in addition to standard anti-emetic therapy. As aprepitant has been shown to be a moderate inhibitor of the cytochrome P450 (CYP) 3A4 isoenzyme, its effect on the pharmacokinetics and metabolism of cyclophosphamide and thiotepa was evaluated. Moreover, preliminary results on the clinical efficacy of aprepitant in the CTC regimen are reported. PATIENTS AND METHODS Six patients were enrolled in a protocol that employed a 4-day course of CTC high-dose chemotherapy with cyclophosphamide (1,500 mg/m2/day), thiotepa (120 mg/m2/day) and carboplatin (AUC 5 mg min/ml/day). Two patients received the tCTC protocol, which comprises two-third of the dose of CTC. In addition to standard anti-emetic therapy, the patients received aprepitant from one day before the start of their course until 3 days after chemotherapy. Blood samples were collected on days one and three of the course and analyzed for cyclophosphamide and its activated metabolite 4-hydroxycyclophosphamide, thiotepa and its main active metabolite tepa. The influence of aprepitant on the pharmacokinetics of cyclophosphamide and thiotepa was analyzed using a population pharmacokinetic analysis including a reference population of 49 patients receiving the same chemotherapy regimen without aprepitant and sampled under the same conditions. The frequency of nausea and vomiting in the six patients receiving CTC was compared with those of the last 22 consecutive patients receiving CTC chemotherapy without aprepitant. Inhibitory activity of aprepitant on cyclophosphamide and thiotepa metabolism was also tested in human liver microsomes. RESULTS In our patient population, the rate of autoinduction of cyclophosphamide (P=0.040) and the formation clearance of tepa (P<0.001) were reduced with 23% and 33% when aprepitant was co-administered, respectively. Exposures to the active metabolite 4-hydroxycyclophosphamide and tepa were therefore reduced (5% and 20%, respectively) in the presence of aprepitant. In human liver microsomes, the 50% inhibitory concentrations (IC50) of aprepitant for inhibition of cyclophosphamide (IC50=1.3 microg/ml) and thiotepa (IC50=0.27 microg/ml) metabolism were within the therapeutic range. Patients receiving aprepitant experienced less frequently CINV both during and after the CTC course compared with the reference population (nausea 3.7 days vs. 5.8 days, P=0.052; vomiting 0.5 days vs. 4.8 days, P<0.001). CONCLUSION Aprepitant inhibited both cyclophosphamide and thiotepa metabolism, most probably due to inhibition of the CYP 3A4 and/or 2B6 isoenzymes. The effects of this interaction are, however, small compared to the total variability. Addition of aprepitant may provide superior protection against vomiting in patients receiving the highly emetogenic high-dose CTC chemotherapy.
Collapse
Affiliation(s)
- Milly E de Jonge
- Department of Pharmacy & Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Louwesweg 6, 1066, EC, Amsterdam, The Netherlands.
| | | | | | | | | | | |
Collapse
|
36
|
de Jonge ME, Huitema ADR, van Dam SM, Rodenhuis S, Beijnen JH. Effects of co-medicated drugs on cyclophosphamide bioactivation in human liver microsomes. Anticancer Drugs 2005; 16:331-6. [PMID: 15711186 DOI: 10.1097/00001813-200503000-00013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The alkylating agent cyclophosphamide (CP) is a prodrug requiring cytochrome P-450-mediated bioactivation to form the active 4-hydroxycyclophosphamide (4OHCP). Modifications in the rate of CP bioactivation may have implications for the effectiveness of CP therapy, especially in high-dose regimens. In this study, agents frequently co-administered with CP in high-dose chemotherapy regimens were tested for their possible inhibition of the bioactivation of CP in human liver microsomes. The Km and Vmax values for the conversion of CP to 4OHCP were 93 microM and 4.3 nmol/h.mg, respectively. No inhibition was observed for aciclovir, carboplatin, ciprofloxacine, granisetron, mesna, metoclopramide, ranitidine, roxitromycin and temazepam. Inhibition was observed for amphotericin B, dexamethasone, fluconazole, itraconazole, lorazepam, ondansetron and thiotepa, with IC50 values of 50, >100, >50, 5, 15, >100 and 1.25 microM, respectively. For all but thiotepa, these IC50 values were higher than the therapeutic drug levels and thus considered of no clinical relevance. We conclude that of the tested co-medicated agents, only thiotepa inhibited metabolism of CP to 4OHCP at clinically relevant concentrations, and may thereby influence therapeutic and toxic responses of CP therapy.
Collapse
Affiliation(s)
- Milly E de Jonge
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Amsterdam, The Netherlands.
| | | | | | | | | |
Collapse
|
37
|
de Jonge ME, Huitema ADR, van Dam SM, Beijnen JH, Rodenhuis S. Significant induction of cyclophosphamide and thiotepa metabolism by phenytoin. Cancer Chemother Pharmacol 2005; 55:507-10. [PMID: 15685452 DOI: 10.1007/s00280-004-0922-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2004] [Accepted: 09/08/2004] [Indexed: 11/24/2022]
Abstract
PATIENT AND METHOD A 42-year-old male patient with relapsing germ-cell cancer was enrolled in a salvage protocol that employed two 4-day courses of CTC high-dose chemotherapy with cyclophosphamide (1,500 mg m(-2) day(-1)), thiotepa (120 mg m(-2) day(-1)), and carboplatin, followed by peripheral blood progenitor cell support. From five days before the start of the second CTC course the patient received phenytoin for generalized epileptic seizures. Blood samples were collected on day 1 of both CTC courses and analyzed for cyclophosphamide and its activated metabolite 4-hydroxycyclophosphamide, and for thiotepa and its main active metabolite tepa. RESULTS Exposure (expressed as area under the plasma concentration vs time curve) to 4-hydroxycyclophosphamide and tepa in the second CTC course was increased by 51% and 115%, respectively, compared with the first CTC course, whereas exposure to cyclophosphamide and thiotepa was significantly reduced (67% and 29%, respectively). Because high exposure to 4-hydroxycyclophosphamide and tepa correlates with increased toxicity, the treatment risk of this patient was significantly increased. Therefore doses were reduced on the third day of the second course. CONCLUSION It was concluded that phenytoin significantly induces both cyclophosphamide and thiotepa metabolism, most probably by induction of the cytochrome p450 enzyme system. This potential clinical significant interaction should be taken into account when phenytoin is administered in combination with cyclophosphamide and thiotepa in clinical practice.
Collapse
Affiliation(s)
- Milly E de Jonge
- Department of Pharmacy and Pharmacology, The Netherlands Cancer Institute/Slotervaart Hospital, Louwesweg 6, 1066 EC Amsterdam, The Netherlands.
| | | | | | | | | |
Collapse
|
38
|
de Jonge ME, Huitema AD, Tukker AC, van Dam SM, Rodenhuis S, Beijnen JH. Accuracy, Feasibility, and Clinical Impact of Prospective Bayesian Pharmacokinetically Guided Dosing of Cyclophosphamide, Thiotepa, and Carboplatin in High-Dose Chemotherapy. Clin Cancer Res 2005. [DOI: 10.1158/1078-0432.273.11.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: Relationships between toxicity and pharmacokinetics have been shown for cyclophosphamide, thiotepa, and carboplatin (CTC) in high-dose chemotherapy. We prospectively evaluated whether variability in exposure to CTC and their activated metabolites can be decreased with pharmacokinetically guided dose administration and evaluated its clinical effect.
Experimental Design: Patients received multiple 4-day courses of cyclophosphamide (1,000–1,500 mg/m2/d), thiotepa (80–120 mg/m2/d), and carbop latin (area under the plasma concentration-time curve 3.3–5 mg × min/mL/d). Doses were adapted on day 3 based on pharmacokinetic analyses of cyclophosphamide, 4-hydroxycyclophosphamide, thiotepa, tepa, and carboplatin done on day 1 using a Bayesian algorithm. Doses were also adjusted before and during second and third courses. Observed toxicity was compared with that in patients receiving standard dose CTC (n = 43).
Results: A total of 46 patients (108 courses) were included. For cyclophosphamide, thiotepa, and carboplatin, a total of 39, 58, and 65 dose adaptations were done within courses and 17, 40, and 43 before courses. The precision within which the target exposure was reached improved compared with no adaptation, especially after within-course adaptations (precision for cyclophosphamide, thiotepa, and carboplatin is 19%, 16%, and 13%, respectively); >85% led to an exposure within ±25% of the target compared with 60% without dose adjustments. Toxicity was similar to that in a reference population, although the incidence of veno-occlusive disease was reduced.
Conclusions: Bayesian pharmacokinetically guided dosing for CTC was feasible and led to a marked reduction in variability of exposure.
Collapse
Affiliation(s)
| | | | - Annemarie C. Tukker
- 2Department of Medical Oncology, the Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Selma M. van Dam
- 1Department of Pharmacy and Pharmacology, Slotervaart Hospital and
| | - Sjoerd Rodenhuis
- 2Department of Medical Oncology, the Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Jos H. Beijnen
- 1Department of Pharmacy and Pharmacology, Slotervaart Hospital and
- 2Department of Medical Oncology, the Netherlands Cancer Institute, Amsterdam, the Netherlands
| |
Collapse
|
39
|
Silvertand LHH, Vazvaei F, Weigl P, Rosing H, Hillebrand MJX, van Maanen MJ, Beijnen JH. Simultaneous quantification of fludarabine and cyclophosphamide in human plasma by high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2005; 19:3673-80. [PMID: 16287039 DOI: 10.1002/rcm.2242] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Fludarabine and cyclophosphamide are anticancer agents mainly used in the treatment of hematologic malignancies. We have developed and validated an assay using high-performance liquid chromatography (HPLC) coupled with electrospray ionization tandem mass spectrometry for the quantification of fludarabine in combination with cyclophosphamide in human heparin and human EDTA plasma. Sample pre-treatment consisted of a protein precipitation with cold acetonitrile (-20 degrees C) using 250 microL of plasma. Separation was performed on an Extend C18 column (150 x 2.1 mm i.d.; 5 microm) with a stepwise gradient using 1 mM ammonia solution and acetonitrile at a flow rate of 400 microL/min. The analytical run time was 12 min. The triple quadrupole mass spectrometer was operated in the positive ion mode and multiple reaction monitoring was used for drug quantification. The method was validated over a concentration range of 1 to 100 ng/mL for fludarabine and cyclophosphamide in human heparin and human EDTA plasma. The coefficients of variation were <13.9% for inter- and intra-day precisions. Mean accuracies were also within the designated limits (+/-15%). The analytes were stable in plasma, processed extracts and in stock solution under all relevant conditions.
Collapse
Affiliation(s)
- L H H Silvertand
- Department of Pharmacy and Pharmacology, Slotervaart Hospital/The Netherlands Cancer Institute, Louwesweg 6, 1066 EC Amsterdam, The Netherlands
| | | | | | | | | | | | | |
Collapse
|
40
|
Castiglia L, Miraglia N, Pieri M, Genovese G, Simonelli A, Basilicata P, Sannolo N, Acampora A. Mono- and diiodocyclophosphamide as possible internal standards for cyclophosphamide quantification: characterization by ion trap multi-stage mass spectrometry and effects of iodine-chlorine substitution on the fragmentation pattern. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2005; 19:1858-66. [PMID: 15945034 DOI: 10.1002/rcm.1996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Hospital personnel involved in antineoplastic drug preparation and administration to patients are exposed to large amounts of these drugs. Labour legislation indicates the necessity of planning monitoring strategies aimed at prevention and/or reduction of drug exposure. Monitoring strategies consist of quantitative determinations of indicators, present in environmental and biological matrices. Among the antineoplastic drugs widely used, cyclophosphamide (CP) has been identified as a suitable indicator of potential exposure to mixtures of antineoplastic drugs. Many literature methods for quantitative analysis of CP involve either liquid (LC) or gas chromatography (GC) with mass spectrometry (MS), both of which require use of a suitable internal standard. The present work focuses on the synthesis of mono- and diiodocyclophosphamide (CPI and CPI(2)) to be used as internal standard. These compounds were analyzed by GC/EI-MS/MS and LC/ESI-MS(n) using ion trap mass spectrometry. The product ion mass spectra are interpreted in terms of proposed structures of fragment ions. Iodine-chlorine substitution resulted in a weakening of the carbon-halogen bond with a noteworthy influence on the ion fragmentation processes. The proposed suitability of CPI and CPI(2) as internal standards was based on similarities to CP as regards ionization and fragmentation processes. The results obtained suggest that CPI could be used as internal standard for CP quantification by LC/ESI-MS/MS, and CPI(2) for GC/EI-MS/MS analyses.
Collapse
Affiliation(s)
- L Castiglia
- Dipartimento di Medicina Pubblica e Sicurezza Sociale, Università di Napoli Federico II, Via S. Pansini 5, I80131 Napoli, Italy
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Sottani C, Tranfo G, Faranda P, Minoia C. Highly sensitive high-performance liquid chromatography/selective reaction monitoring mass spectrometry method for the determination of cyclophosphamide and ifosfamide in urine of health care workers exposed to antineoplastic agents. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2005; 19:2794-800. [PMID: 16144038 DOI: 10.1002/rcm.2116] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In recent years, the potential for exposure of health care workers to antineoplastic agents has led to the establishment of more restrictive government and professional standards and procedures for handling cytotoxic drugs. Therefore, the detection of low exposure levels is a new and important aim of biological monitoring. In the present paper we report an assay for the simultaneous determination of cyclophosphamide (CP) and ifosfamide (IF) in urine, using electrospray ionization liquid chromatography/tandem mass spectrometry with selective reaction monitoring (HPLC/SRM-MS). A rapid sample preparation procedure uses a solid-phase extraction stage with C18 columns. The urine assay is linear over the range 0.02 to 0.4 microg/L, with lower limits of quantification (LLOQs) of 0.02 and 0.04 microg/L for CP and IF. The accuracy and precision have been carried out through the validation study. The intra-day precision, expressed as relative standard deviation (RSD), is found to be always less than 14.7% for both analytes. The overall precision, assessed on three different days, is less than 15.0%. The recovery of ozaxaphosphorines ranges from 83.5% (CP) to 88.5% (IF) with a RSD always less than 14.6%. The uncertainty of the overall method was also evaluated, to identify possible sources of error. The combined uncertainty was less than 25% over all the days of the validation study. This method is selective and sensitive enough to determine trace levels of CP and IF in a range of urine concentrations relevant to performing low exposure assessment.
Collapse
Affiliation(s)
- Cristina Sottani
- Laboratory for Environmental and Toxicological Testing, S. Maugeri Foundation, IRCCS, via Ferrata 8, Pavia, Italy.
| | | | | | | |
Collapse
|