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Sidiropoulou G, Kabir A, Furton KG, Kika FS, Fytianos K, Tzanavaras PD, Zacharis CK. Combination of fabric phase sorptive extraction with UHPLC-ESI-MS/MS for the determination of adamantine analogues in human urine. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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LC-MS bioanalysis of targeted nasal galantamine bound chitosan nanoparticles in rats' brain homogenate and plasma. Anal Bioanal Chem 2021; 413:5181-5191. [PMID: 34173038 DOI: 10.1007/s00216-021-03487-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/03/2021] [Accepted: 06/16/2021] [Indexed: 10/21/2022]
Abstract
Validated LC-MS method for the direct quantitative analysis of galantamine (acetylcholinesterase inhibitor) was developed in rat cerebrospinal fluid and brain homogenate besides rat plasma, utilizing structurally close nalbuphine as an internal standard. After a simple protein precipitation step, samples are separated on 2-μm C18 column kept at 40 °C, using isocratic flow of 80% methanol in pH 9.5 ammonium formate buffer, and retention times were about 1.8 and 2.9 min for galantamine and nalbuphine, respectively. Mass detection with electrospray ionization (ESI) and positive polarity was able to detect 0.2 ng mL-1 galantamine using single ion monitoring mode (SIM) at m/z 288 for galantamine and m/z 358 for nalbuphine. The method showed linearity within the range of 0.5 - 300 ng mL-1. The proposed method was validated according to FDA guidelines. Trueness and precision showed acceptable values at all quality control levels, and recoveries were within 85.6 - 114.3% in all matrices at all runs and with relative standard deviations within 0.2 - 12.4%. The method was used to study in vivo brain uptake and pharmacokinetics of galantamine from brain homogenate and plasma samples following the administration of nasal galantamine-bound chitosan nanoparticles compared to oral and nasal galantamine solutions, in scopolamine-induced Alzheimer's disease rat model.
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Tan A, Fanaras JC. Use of high-pH (basic/alkaline) mobile phases for LC-MS or LC-MS/MS bioanalysis. Biomed Chromatogr 2018; 33:e4409. [PMID: 30315658 DOI: 10.1002/bmc.4409] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/28/2018] [Accepted: 10/09/2018] [Indexed: 12/25/2022]
Abstract
High-pH or basic/alkaline mobile phases are not commonly used in LC-MS or LC-MS/MS bioanalysis because of the deeply rooted concern with column instability and reduced detection sensitivity for basic compounds in high-pH mobile phases owing to charge neutralization. With the advancement of LC column technology and the wide recognition of the "wrong-way-round" phenomena, high-pH mobile phases are more and more used in LC-MS or LC-MS/MS bioanalysis to improve chromatographic peak shape, retention, selectivity, resolution, and detection sensitivity, not only for basic compounds, but also for many other compounds. In this article, the benefits, practical considerations, application examples and cautions for using high-pH mobile phases in LC-MS or LC-MS/MS bioanalysis are reviewed, with a focus on quantification. Furthermore, the future trends in this field are also envisaged. A total of 84 references are cited in this review.
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Affiliation(s)
- Aimin Tan
- Nucro-Technics, Scarborough, ON, Canada
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Wang J, Pavurala N, Xu X, Krishnaiah YSR, Faustino PJ. Development and validation of a UPLC-MS method for the determination of galantamine in guinea pig plasma and its application to a pre-clinical bioavailability study of novel galantamine formulations. Biomed Chromatogr 2018; 32:e4275. [PMID: 29726619 DOI: 10.1002/bmc.4275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/17/2018] [Accepted: 04/24/2018] [Indexed: 11/11/2022]
Abstract
To evaluate the bioavailability and pharmacokinetic profiles of two novel galantamine formulations as medical countermeasure products, an ultra-performance liquid chromatography-single quadrupole mass spectrometry (UPLC-MS) method was developed and validated for quantifying galantamine in guinea pig plasma using solid-phase extraction with a mixed mode strong cation exchange reversed-phase cartridge. Chromatographic separation was achieved on a Waters Acquity UPLC BEH C18 column maintained at 40°C. The mobile phases were solution A, acetonitrile-water, 5:95 (v/v) and solution B, acetonitrile-water 90:10 (v/v), both containing 2 mM ammonium formate and 0.2% formic acid. The mobile phase was delivered utilizing a 3 min gradient program start with 95%A-5%B at a flow rate of 0.6 mL/min. The analyte and internal standard, galantamine-d3, were detected by selected ion monitoring mode on a Waters 3100 single quadrupole mass spectrometer with positive electrospray ionization. The method was validated according to the US Food and Drug Administration bioanalytical guidance. The method was selective and was linear over the analytical range of 2-2000 ng/mL. Accuracy and precision were acceptable with intra- and inter-day accuracies between 96.8 and 101% and precisions (RSD) <4.88%. The method was successfully implemented to measure galantamine plasma levels in a series of pre-clinical bioavailability studies for the evaluation of novel galantamine formulations.
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Affiliation(s)
- Jiang Wang
- Division of Product Quality Research, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Naresh Pavurala
- Division of Product Quality Research, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Xiaoming Xu
- Division of Product Quality Research, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Yellela S R Krishnaiah
- Division of Process Assessment II, Office of Process and Facilities, Office of Pharmaceutical Quality, Center for Drug Evaluation, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Patrick J Faustino
- Division of Product Quality Research, Office of Testing and Research, Office of Pharmaceutical Quality, Center for Drug Evaluation, US Food and Drug Administration, Silver Spring, Maryland, USA
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Therapeutic drug monitoring for patients with Alzheimer dementia to improve treatment with donepezil. Ther Drug Monit 2016; 37:353-61. [PMID: 25384119 DOI: 10.1097/ftd.0000000000000152] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Aiming to verify that therapeutic drug monitoring has the potential to optimize treatment with acetylcholine esterase inhibitors of patients with Alzheimer dementia, this study investigated whether serum concentrations of donepezil are associated with clinical improvement. METHODS Clinical improvement was measured using the clinical global impression (CGI) scale, and donepezil concentrations were measured in serum by a high-performance liquid chromatographic method with spectrophotometric detection. RESULTS In total, 206 serum samples from 106 patients (49.5% female) were retrospectively available for analysis. Patients included were treated under everyday conditions. Their mean ± SD age was 72 ± 9 years, daily doses of donepezil were 5 and 10 mg, and their mean ± SD serum concentrations were 23 ± 9 and 47 ± 18 ng/mL, respectively. Serum concentrations correlated significantly (P < 0.001) with CGI scores (Pearson's correlation coefficient r = 0.511, P < 0.01). In patients who were "very much improved," according to their CGI score, the mean serum concentration was 66 ± 20 ng/mL and thus significantly higher (P < 0.01) than in patients with "minimal improvement" (29 ± 12 ng/mL). Receiver operating characteristics analysis suggests that donepezil serum concentrations of at least 50 ng/mL may be recommended for maximal clinical benefit. CONCLUSIONS Because donepezil serum concentrations were highly variable between individual patients and the majority of patients exhibited concentrations that were below 50 ng/mL at therapeutic doses of 5 and 10 mg/d, it can be concluded that therapeutic drug monitoring may be used to enhance the effectiveness of donepezil treatment.
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Noetzli M, Guidi M, Ebbing K, Eyer S, Wilhelm L, Michon A, Thomazic V, Stancu I, Alnawaqil AM, Bula C, Zumbach S, Gaillard M, Giannakopoulos P, von Gunten A, Csajka C, Eap CB. Population pharmacokinetic approach to evaluate the effect of CYP2D6, CYP3A, ABCB1, POR and NR1I2 genotypes on donepezil clearance. Br J Clin Pharmacol 2015; 78:135-44. [PMID: 24433464 DOI: 10.1111/bcp.12325] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 12/18/2013] [Indexed: 11/28/2022] Open
Abstract
AIMS A large interindividual variability in plasma concentrations has been reported in patients treated with donepezil, the most frequently prescribed antidementia drug. We aimed to evaluate clinical and genetic factors influencing donepezil disposition in a patient population recruited from a naturalistic setting. METHODS A population pharmacokinetic study was performed including data from 129 older patients treated with donepezil. The patients were genotyped for common polymorphisms in the metabolic enzymes CYP2D6 and CYP3A, in the electron transferring protein POR and the nuclear factor NR1I2 involved in CYP activity and expression, and in the drug transporter ABCB1. RESULTS The average donepezil clearance was 7.3 l h(-1) with a 30% interindividual variability. Gender markedly influenced donepezil clearance (P < 0.01). Functional alleles of CYP2D6 were identified as unique significant genetic covariate for donepezil clearance (P < 0.01), with poor metabolizers and ultrarapid metabolizers demonstrating, respectively, a 32% slower and a 67% faster donepezil elimination compared with extensive metabolizers. CONCLUSION The pharmacokinetic parameters of donepezil were well described by the developed population model. Functional alleles of CYP2D6 significantly contributed to the variability in donepezil disposition in the patient population and should be further investigated in the context of individual dose optimization to improve clinical outcome and tolerability of the treatment.
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Affiliation(s)
- Muriel Noetzli
- Unit of Pharmacogenetics and Clinical Psychopharmacology, Centre for Psychiatric Neuroscience, Department of Psychiatry, Hospital of Cery, Lausanne University Hospital, Prilly, Switzerland
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Ponnayyan Sulochana S, Sharma K, Mullangi R, Sukumaran SK. Review of the validated HPLC and LC-MS/MS methods for determination of drugs used in clinical practice for Alzheimer's disease. Biomed Chromatogr 2014; 28:1431-90. [PMID: 24515838 DOI: 10.1002/bmc.3116] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 11/19/2013] [Accepted: 11/26/2013] [Indexed: 11/07/2022]
Abstract
Alzheimer's disease (AD) is a neurological disorder and is the most frequent type of dementia among elderly people. Donepezil, rivastigmine, galantamine, tacrine and memantine are the US Food and Drug Administration approved oral drugs used in the treatment of AD. Quantitation of these drugs in various biological matrices and monitoring them in long-term treatment is essential to titer the dose of these drugs and ensure patient compliance. This review provides a comprehensive account of various HPLC and LC-MS/MS assays, which have been successfully employed to measure the drug levels in various biological matrices arising from preclinical and clinical studies. In addition, this review collates various considerations such as internal standard selection, extraction schemes, matrix effect, selectivity evaluation and optimization of mass spectrometric conditions to enable the development of sound bioanalytical methods for quantitation of Alzheimer's drugs. Overall LC-MS/MS methods have proven to be the choice of bioanalytical method for the quantification of Alzheimer's drugs in both preclinical and clinical studies. In conclusion, important features of LC-MS/MS methodology for Alzheimer's drugs include shortened analysis time, increased throughput, selectivity and lower cost of analysis.
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Affiliation(s)
- Suresh Ponnayyan Sulochana
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Vels Institute of Science Technology and Advanced Studies (VISTAS), Vels University, Chennai, 600117, India
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Ansermot N, Brawand-Amey M, Kottelat A, Eap CB. Fast quantification of ten psychotropic drugs and metabolites in human plasma by ultra-high performance liquid chromatography tandem mass spectrometry for therapeutic drug monitoring. J Chromatogr A 2013; 1292:160-72. [DOI: 10.1016/j.chroma.2012.12.071] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 11/30/2012] [Accepted: 12/30/2012] [Indexed: 11/26/2022]
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Relationship of CYP2D6, CYP3A, POR, and ABCB1 Genotypes With Galantamine Plasma Concentrations. Ther Drug Monit 2013; 35:270-5. [DOI: 10.1097/ftd.0b013e318282ff02] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Trace analysis of acetylcholinesterase inhibitors with antipsychotic drugs for Alzheimer’s disease by capillary electrophoresis with on column field-amplified sample injection. Anal Bioanal Chem 2013; 405:3233-42. [DOI: 10.1007/s00216-013-6767-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 01/14/2013] [Accepted: 01/17/2013] [Indexed: 10/27/2022]
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Noetzli M, Guidi M, Ebbing K, Eyer S, Wilhelm L, Michon A, Thomazic V, Alnawaqil AM, Maurer S, Zumbach S, Giannakopoulos P, von Gunten A, Csajka C, Eap CB. Population Pharmacokinetic Study of Memantine: Effects of Clinical and Genetic Factors. Clin Pharmacokinet 2013; 52:211-23. [DOI: 10.1007/s40262-013-0032-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Implementation of a Cost-Effective HPLC/UV Approach for Routine Medical Quantification of Memantine in Human Serum. Ther Drug Monit 2012; 34:702-12. [DOI: 10.1097/ftd.0b013e31826933ab] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Leis HJ, Windischhofer W. Quantitative determination of memantine in human plasma by GC using negative ion chemical ionization MS detection after derivatization with a new reagent, o-(pentafluorobenzyloxycarbonyl)-2,3,4,5-tetrafluorobenzoyl chloride. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0886-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Culzoni MJ, Aucelio RQ, Escandar GM. High-performance liquid chromatography with fast-scanning fluorescence detection and multivariate curve resolution for the efficient determination of galantamine and its main metabolites in serum. Anal Chim Acta 2012; 740:27-35. [DOI: 10.1016/j.aca.2012.06.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 06/15/2012] [Accepted: 06/19/2012] [Indexed: 11/24/2022]
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Leis HJ, Windischhofer W. Determination of memantine in human plasma by GC using negative ion chemical ionization MS detection after derivatization with a new reagent. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0840-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Noetzli M, Ansermot N, Dobrinas M, Eap CB. Simultaneous determination of antidementia drugs in human plasma: Procedure transfer from HPLC–MS to UPLC–MS/MS. J Pharm Biomed Anal 2012; 64-65:16-25. [DOI: 10.1016/j.jpba.2012.02.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 02/08/2012] [Indexed: 10/28/2022]
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Ansermot N, Brawand-Amey M, Eap CB. Simultaneous quantification of selective serotonin reuptake inhibitors and metabolites in human plasma by liquid chromatography–electrospray mass spectrometry for therapeutic drug monitoring. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 885-886:117-30. [DOI: 10.1016/j.jchromb.2011.12.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 12/22/2011] [Accepted: 12/23/2011] [Indexed: 11/30/2022]
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