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TAKADA M, OHBA Y, KABASHIMA T, NAKASHIMA K, WADA M. Simple Simultaneous Assay of Methotrexate and Non-Steroidal Anti-Inflammatory Drugs by HPLC. CHROMATOGRAPHY 2020. [DOI: 10.15583/jpchrom.2020.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Makoto TAKADA
- Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University
- Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Yoshihito OHBA
- Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Tsutomu KABASHIMA
- Faculty of Pharmaceutical Sciences, Nagasaki International University
| | | | - Mitsuhiro WADA
- Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University
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2
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Jahed FS, Hamidi S, Galehassadi M. Dispersive Micro-Solid Phase Extraction for Sensitive Determination of Methotrexate from Human Saliva Followed by Spectrophotometric Method. Asian Pac J Cancer Prev 2020; 21:1531-1538. [PMID: 32592345 PMCID: PMC7568869 DOI: 10.31557/apjcp.2020.21.6.1531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Indexed: 11/25/2022] Open
Abstract
For biological assessing of hospital personnel occupationally exposed to antineoplastic drugs, highly sensitive and accurate methods are required. Methotrexate (MTX) is an anticancer agent that is widely used in a variety of human cancers. For the first time, dispersive-micro solid phase extraction (D-µ-SPE) has been applied for determination of low levels of MTX in saliva samples. The method is based on rapid extraction of MTX using graphene oxide adsorbent. The sample preparation time is decreased by the fact that the adsorbent dispersed in the sample solution and extraction equilibrium can be reached very fast. This significant feature which obtained with this method is of key interest for routine trace laboratory analysis. The influence of different variables on D-µ-SPE was investigated. Under optimum conditions, the calibration graph was linear over the range of 10-1000 ng/ml. The relative standard deviations are better than 9.0%. The proposed method was successfully applied for the determination of MTX in patient samples.
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Affiliation(s)
- Fatemeh Soghra Jahed
- Food and Drug Safety Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Samin Hamidi
- Food and Drug Safety Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Mohammad Galehassadi
- Department of Organic Chemistry, Azarbaijan Shahid Madani University, Tabriz, Iran
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Hamidi S, Azami A, Mehdizadeh Aghdam E. A novel mixed hemimicelles dispersive micro-solid phase extraction using ionic liquid functionalized magnetic graphene oxide/polypyrrole for extraction and pre-concentration of methotrexate from urine samples followed by the spectrophotometric method. Clin Chim Acta 2018; 488:179-188. [PMID: 30419220 DOI: 10.1016/j.cca.2018.11.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 10/31/2018] [Accepted: 11/02/2018] [Indexed: 11/30/2022]
Abstract
Methotrexate (MTX) is an anticancer drug that is widely used in a variety of cancers including primary central nervous system lymphoma. It is also administrated in the treatment of some autoimmune diseases. A simple, accurate, sensitive, and precise mixed hemimicelles dispersive micro-solid phase extraction was proposed for MTX quantification in human urine samples. MTX was quantified by spectrophotometer after dispersive micro-solid phase extraction using ionic liquid functionalized magnetic graphene oxide/polypyrrole. Interactions of adsorbent and MTX were modeled by molecular docking and the interaction energy was predicted to be -8.35 kcal/mol. A larger absolute value of binding energy represents larger adsorption strength, indicating that graphene oxide nanosheets could perform higher adsorption strength toward MTX. The concentrations of MTX were proportional to analytical response in amounts ranging from 10 to 1000 ng/mL with a good correlation (R2 = 0.99). Inter- and intra-day precisions and accuracies were within the acceptable limit according to FDA guideline (15% for biological determination). The recoveries were ranging from 89 to 93% and the method was specific for routine analysis of MTX. This protocol was applied to the urine of two patients under MTX therapy received an intravenous administration of 1 mg/kg/dose of MTX with acute lymphoblastic leukemia. The accuracy of the method was confirmed by HPLC measurements.
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Affiliation(s)
- Samin Hamidi
- Food and Drug Safety Research Center, Tabriz University of Medical Science, Tabriz 51664, Iran.
| | - Ayda Azami
- Drug Applied Research Center, Tabriz University o f Medical Sciences, Tabriz, Iran
| | - Elnaz Mehdizadeh Aghdam
- Research Center of Molecular Medicine, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Bluett J, Riba-Garcia I, Hollywood K, Verstappen SMM, Barton A, Unwin RD. A HPLC-SRM-MS based method for the detection and quantification of methotrexate in urine at doses used in clinical practice for patients with rheumatological disease: a potential measure of adherence. Analyst 2015; 140:1981-7. [DOI: 10.1039/c4an02321h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A novel assay to measure adherence to low-dose oral methotrexate.
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Affiliation(s)
- J. Bluett
- Arthritis Research UK Centre for Genetics and Genomics
- Institute of Inflammation and Repair
- The University of Manchester
- Manchester
- UK
| | - I. Riba-Garcia
- Centre for Advanced Discovery and Experimental Therapeutics (CADET)
- Central Manchester University Hospitals NHS Foundation Trust
- Manchester Academic Health Sciences Centre
- Manchester
- UK
| | - K. Hollywood
- Centre for Advanced Discovery and Experimental Therapeutics (CADET)
- Central Manchester University Hospitals NHS Foundation Trust
- Manchester Academic Health Sciences Centre
- Manchester
- UK
| | - S. M. M. Verstappen
- Arthritis Research UK Centre for Epidemiology
- Centre for Musculoskeletal Research
- The University of Manchester
- Manchester
- UK
| | - A. Barton
- Arthritis Research UK Centre for Genetics and Genomics
- Institute of Inflammation and Repair
- The University of Manchester
- Manchester
- UK
| | - R. D. Unwin
- Centre for Advanced Discovery and Experimental Therapeutics (CADET)
- Central Manchester University Hospitals NHS Foundation Trust
- Manchester Academic Health Sciences Centre
- Manchester
- UK
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5
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Pontinha ADR, Jorge SMA, Diculescu VC, Vivan M, Oliveira-Brett AM. Antineoplasic Drug Methotrexate Redox Mechanism Using a Glassy Carbon Electrode. ELECTROANAL 2012. [DOI: 10.1002/elan.201100558] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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6
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Sonemoto E, Kono N, Ikeda R, Wada M, Ueki Y, Nakashima K. Practical determination of methotrexate in serum of rheumatic patients by LC-MS/MS. Biomed Chromatogr 2012; 26:1297-300. [DOI: 10.1002/bmc.2700] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 12/11/2011] [Accepted: 12/12/2011] [Indexed: 11/11/2022]
Affiliation(s)
| | - Narumi Kono
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
| | - Rie Ikeda
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
| | - Mitsuhiro Wada
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
| | - Yukitaka Ueki
- Department of Internal Medicine, Sasebo Chuo Hospital, 15 Yamatocho, Sasebo; Nagasaki; 857-1195; Japan
| | - Kenichiro Nakashima
- Course of Pharmaceutical Sciences, Graduate School of Biomedical Sciences; Nagasaki University; 1-14 Bunkyo-machi; Nagasaki; 852-8521; Japan
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Safety and pharmacokinetic analysis of methotrexate administered directly into the fourth ventricle in a piglet model. J Neurooncol 2010; 100:397-406. [PMID: 20440538 DOI: 10.1007/s11060-010-0210-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 04/14/2010] [Indexed: 10/19/2022]
Abstract
We have developed a piglet model to assess chemotherapy administration directly into the fourth ventricle as a potential treatment for medulloblastoma and other malignant posterior fossa tumors. The objective of this study was to assess safety and pharmacokinetics after methotrexate infusions into the fourth ventricle. Catheters were inserted into the fourth ventricle and lumbar cistern in five piglets. Two milligrams of Methotrexate (MTX) was infused into the fourth ventricle on five consecutive days. Safety was assessed by neurological examination, 4.7 T MRI, and post-mortem pathological analysis. MTX levels in serum and cerebrospinal fluid (CSF) were measured, and area under the concentration-time curve (AUC) was calculated for CSF samples. No neurological deficits were caused by MTX infusions. One piglet died from complications of anesthesia induction for MRI scanning. MRI scans showed accurate catheter placement without signal changes in the brainstem or cerebellum. One piglet had asymptomatic ventriculomegaly. Pathological analysis demonstrated meningitis and choroid plexitis consisting predominantly of CD-3 positive T-lymphocytes in all piglets and a small focal area of subependymal necrosis in one. In all piglets, mean peak MTX level in fourth ventricular CSF exceeded that in lumbar CSF by greater than five-fold. Serum MTX levels were undetectable or negligible. Statistically significant differences between fourth ventricle and lumbar AUC were detected at peaks (P = 0.01) and at all collection time points (P = 0.01) but not at troughs (P = 0.36). MTX can be infused into the fourth ventricle without clinical or radiographic evidence of damage. An inflammatory response without clinical correlate is observed. Significantly higher peak MTX levels are observed in the fourth ventricle than in the lumbar cistern.
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INOUE S, HASHIGUCHI M, KAWAI S, MOCHIZUKI M. Erythrocyte Methotrexate-polyglutamate Assay Using Fluorescence Polarization Immunoassay Technique: Application to the Monitoring of Patients with Rheumatoid Arthritis. YAKUGAKU ZASSHI 2009; 129:1001-5. [DOI: 10.1248/yakushi.129.1001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Sachie INOUE
- Division for Evaluation and Analysis of Drug Information, Keio University Faculty of Pharmacy
| | - Masayuki HASHIGUCHI
- Division for Evaluation and Analysis of Drug Information, Keio University Faculty of Pharmacy
| | - Shinichi KAWAI
- Division of Rheumatology, Department of Internal Medicine (Omori), Toho University School of Medicine
| | - Mayumi MOCHIZUKI
- Division for Evaluation and Analysis of Drug Information, Keio University Faculty of Pharmacy
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Sabry SM, Abdel-Hady M, Elsayed M, Fahmy OT, Maher HM. Study of stability of methotrexate in acidic solution Spectrofluorimetric determination of methotrexate in pharmaceutical preparations through acid-catalyzed degradation reaction. J Pharm Biomed Anal 2003; 32:409-23. [PMID: 14565545 DOI: 10.1016/s0731-7085(03)00239-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Study of the degradation reaction of methotrexate (MTX) in acidic solution was carried out. Optimization of the experimental parameters of MTX acid hydrolysis was investigated. Spectrofluorimetric method for determination of MTX through measurement of its acid-degradation product, 4-amino-4-deoxy-10-methylpteroic acid (AMP), was developed. Stability of the standard solution of MTX prepared in sulfuric acid was discussed in the view of accelerated stability analysis. Two other comparative spectroflourimetric methods based on measuring the fluorescence intensities from either a condensation reaction with acetylacetone-formaldehyde (Hantzsch reaction) or a reaction with fluorescamine were also described. Beer's law validation, accuracy, precision, limits of detection, limits of quantification, and other aspects of analytical merit are presented in the text. The proposed methods were successfully applied for the analysis of MTX in pure drug and tablets dosage form. The sensitivity of the developed methods was favorable, so it was possible to be adopted for determination of MTX in plasma samples for routine use in high-dose MTX therapy.
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Affiliation(s)
- Suzy M Sabry
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt.
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Kuo C, Wu H, Wu S. Enantiomeric analysis of methotrexate in pharmaceuticals by cyclodextrin-modified capillary electrophoresis. Anal Chim Acta 2002. [DOI: 10.1016/s0003-2670(02)00935-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Rubino FM. Separation methods for methotrexate, its structural analogues and metabolites. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 2001; 764:217-54. [PMID: 11817030 DOI: 10.1016/s0378-4347(01)00402-9] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Methotrexate (MTX) is the prototype folate antagonist cytotoxic drug, employed in the therapy of solid tumors and leukaemias, and recently also as an immunosuppressive agent in organ transplantation, in the treatment of some autoimmune diseases and in the therapy of severe asthma. MTX is one of the very few antineoplastic drugs the therapeutic concentration monitoring of which is currently employed in clinical practice and can be routinely measured in biological samples by a number of different analytical techniques, among which are immunoenzymatic and chromatographic methods. Each technique has of course its own advantages in terms of sensitivity, specificity, speed, cost and level of expertise required. Along with therapeutic drug concentration monitoring and clinical pharmacology, fundamental research into the mechanism of action of antifolate drugs is still a field which requires the measurement of MTX, of its new analogues and of their metabolites in biological samples. This review summarizes the instrumental conditions and the performance of several published chromatographic methods employed to measure MTX, its metabolites and some analogues in clinical and biological research. More than 70 papers describing chromatographic assays for MTX and its metabolites have been published in the literature between 1975 and 2000. A wide array of experimental conditions for sample preparation, analyte separation and detection have been employed. According to their chemical properties, MTX, its metabolites and analogue drugs present in several biological samples (plasma, serum, saliva, urine, cerebrospinal fluid, tissue specimens) can be extracted, separated and detected under a variety of chromatographic conditions, i.e. on different stationary phases, under a wide choice of mobile phase conditions (acidic or neutral, employing ion-pair or micellar chromatography), followed by several detection techniques (UV-Vis spectrophotometry, pre- or post-column oxidation and fluorimetry, electrochemistry, mass spectrometry). Optimized methods allow simultaneous measurement within a few minutes of the plasma levels of MTX and its main metabolites at concentrations in the low-nM range. One special field which needs sensitive, fast and inexpensive methods for the detection and measurement of MTX is the monitoring of contamination in workplace environments, such as pharmaceutical industries and oncological hospital pharmacies, and in sewage waters. The measurement of the intracellular gamma-oligo-glutamate metabolites of biological folates, of MTX and of some analogue drugs is of great importance in basic pharmacological research. The existence of empirical quantitative relationships between the retention of individual oligomers under different chromatographic conditions and the number of added glutamic acid units allows identification of the metabolites even when authentic standards are not available.
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Affiliation(s)
- F M Rubino
- Department of Medicine, Surgery and Odontology, University of Milano at Ospedale S. Paolo, Milan, Italy.
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Steinborner S, Henion J. Liquid-liquid extraction in the 96-well plate format with SRM LC/MS quantitative determination of methotrexate and its major metabolite in human plasma. Anal Chem 1999; 71:2340-5. [PMID: 10405602 DOI: 10.1021/ac981294y] [Citation(s) in RCA: 120] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A method involving the semirobotic liquid-liquid extraction (LLE) in deep-well 96-well plates was developed for the quantitation of the anti-cancer/antiinflammatory drug methotrexate (MTX) and its major metabolite, 7-hydroxymethotrexate (7OH-MTX) in human plasma. The extraction time for the sample preparation was relatively short with four 96-well plates (384 samples) prepared in approximately 90 min by one person. The sample extracts were each analyzed within 1.2 min using a positive ion turbo-ionspray selected reaction monitoring liquid chromatography/mass spectrometric (SRM LC/MS) method in which 768 samples were easily analyzed within 22 h (maximum of 820 samples in 24 h). Deuterated internal standards, MTX-d3 and 7OH-MTX-d3, were used. The calibration curves for MTX and 7OH-MTX were linear (R2 > 0.997) and ranged from 0.5 to 250 and 0.75 to 100 ng/mL, respectively. The limit of quantitation (LOQ) for MTX and 7OH-MTX was 0.5 and 0.75 ng/mL, respectively; persistent carryover from the autosampler limited the LOQ achievable. The limit of detection (LOD) was 0.05 ng/mL for MTX and 0.1 ng/mL for 7OH-MTX. The intra- and inter-assay precision and accuracy did not exceed 15% for both MTX and 7OH-MTX. The recoveries were 61% for MTX and 47% for 7OH-MTX. The method was validated and demonstrated to be robust with high precision and accuracy.
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Bakkali A, Corta E, Berrueta LA, Gallo B, Vicente F. Study of the solid-phase extraction of diclofenac sodium, indomethacin and phenylbutazone for their analysis in human urine by liquid chromatography. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1999; 729:139-45. [PMID: 10410936 DOI: 10.1016/s0378-4347(99)00143-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A selective semi-automated solid-phase extraction (SPE) of the non-steroidal anti-inflammatory drugs diclofenac sodium, indomethacin and phenylbutazone from urine prior to high-performance liquid chromatography was investigated. The drugs were recovered from urine buffered at pH 5.0 using C18 Bond-Elut cartridges as solid sorbent material and mixtures of methanol-aqueous buffer or acetonitrile-aqueous buffer as washing and elution solvents. The extracts were chromatographed on a reversed-phase ODS column using 10 mM acetate buffer (pH 4.0)-acetonitrile (58:42, v/v) as the mobile phase, and the effluent from the column was monitored at 210 nm with ultraviolet detection. Absolute recoveries of the anti-inflammatory drugs within the range 0.02-1.0 microg/ml were about 85% for diclofenac and indomethacin, and 50% for phenylbutazone without any interference from endogenous compounds of the urine. The within-day and between-day repeatabilities were in all cases less than 5% and 10%, respectively. Limits of detection were 0.007 microg/ml for diclofenac sodium and indomethacin and 0.035 microg/ml for phenylbutazone, whereas limits of quantitation were 0.02 microg/ml for diclofenac and indomethacin and 0.1 microg/ml for phenylbutazone.
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Affiliation(s)
- A Bakkali
- Department of Analytical Chemistry, Faculty of Sciences, University of the Basque Country, Bilbao, Spain
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Floridia L, Pietropaolo AM, Tavazzani M, Rubino FM, Colombi A. High-performance liquid chromatography of methotrexate for environmental monitoring of surface contamination in hospital departments and assessment of occupational exposure. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1999; 726:95-103. [PMID: 10348175 DOI: 10.1016/s0378-4347(98)00561-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
In the frame of applicative research in occupational hygiene of hospital workplaces, we investigate hospital indoor contamination as a consequence of the use of antineoplastic drugs (ANDs), with the purpose of assessing exposure of medical and nursing personnel to potentially harmful doses of ANDs, and ultimately of yielding advice on safe operating procedures for manipulation of ANDs in hospitals and in house-care of cancer patients. Among the large number of currently employed ANDs, methotrexate (MTX) has been selected as a tracer of surface contamination, on the basis of its wide use in therapy, its ease of measurement and of its chemical properties relevant to persistence and transport in the indoor environment. MTX is a polyelectrolyte, with a high water, but lower organic solvent solubility, a negligible vapour pressure and a high chemical robustness to environmental stress, thus allowing to measure surface-to-surface carryover (e.g. from spillage or glove fingerprint) and indoor contamination due to aerosol transport (e.g. from syringe manipulation procedures). Monitoring of MTX in environmental samples such as swab washings of surfaces and objects requires an analytical method with characteristics of sensitivity, reproducibility, precision, analytical speed, ease of automation and robustness. We have therefore developed an analytical procedure which employs simple short-column RP-HPLC with UV detection, automated sample injection and a close analogue internal standard for improved precision and solid-phase extraction (SPE) for sample concentration. Our method has proven suitable for detecting traces of MTX on a wide variety of surfaces and objects, with a limit of quantification in the range of 50 microg/dm3 for direct injection of unconcentrated washings, corresponding to the possible detection of surface contamination as low as 1 microg/m3 and a limit of detection in the range of 10 ng/m2 for samples as large as 100 dm3 concentrated by SPE. We present preliminary results from a recent hospital case-study, assessing the contamination level of furniture and equipment in drug preparation areas. Spillage fractions as high as 5% of the employed mass (70-260 mg/day) are measured on the polythene-backed paper disposable hood cover sheet; traces of MTX in the microgram range can also be measured on floor surfaces, furniture and handles, even at a distance from the preparation hoods.
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Affiliation(s)
- L Floridia
- I.C.P.-C.E.M.O.C. Laboratory for Industrial Toxicology and Occupational Allergology, Milan, Italy
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Semi-automated, solid-phase extraction procedure for liquid chromatographic determination of papaverine, diltiazem, desipramine and nicardipine in urine. Chromatographia 1999. [DOI: 10.1007/bf02575286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hirai T, Matsumoto S, Kishi I. Simultaneous analysis of several non-steroidal anti-inflammatory drugs in human urine by high-performance liquid chromatography with normal solid-phase extraction. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1997; 692:375-88. [PMID: 9188827 DOI: 10.1016/s0378-4347(96)00509-9] [Citation(s) in RCA: 139] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A practical and reproducible high-performance liquid chromatographic method using normal solid-phase extraction has been developed for the simultaneous analysis of twelve non-steroidal anti-inflammatory drugs (NSAIDs) in human urine. A urine specimen mixed with acetate buffer pH 5.0 was purified by solid-phase extraction on a Sep-Pak Silica cartridge. The analyte was chromatographed by a reversed-phase Inertsil ODS-2 column using a phosphate buffer-acetonitrile at pH 5.0 as the mobile phase, and the effluent from the column was monitored at 230 or 320 nm. Absolute recoveries were greater than 73% for all of the twelve NSAIDs. The present method enabled simple manipulation and isocratic HPLC with UV analysis as well as high sensitivity of 0.005 microg/ml for naproxen, and 0.05 microg/ml for sulindac, piroxicam, loxoprofen, ketoprofen, felbinac, fenbufen, flurbiprofen, diclofenac, ibuprofen and mefenamic acid as the quantitation limit in human urine using indomethacin as an internal standard.
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Affiliation(s)
- T Hirai
- Medical Research Laboratories, Lederle (Japan) Ltd., Shiki-shi, Saitama
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