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Comparison of LC-MS 3 and LC-MRM Methods for Quantifying Amantadine and Its Application in Therapeutic Amantadine Monitoring in Human Plasma. Molecules 2022; 27:molecules27217619. [PMID: 36364446 PMCID: PMC9655109 DOI: 10.3390/molecules27217619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
A simple sample preprocessing method was developed for the quantitative determination of amantadine (AMT) in human plasma by liquid chromatography-tandem mass spectrometry cubed (LC-MS3). The LC-MS3 system comprised a Shimadzu Exion LC-20AD HPLC pump coupled with a QTRAP 5500 mass spectrometer. First, the plasma samples were pretreated using acetonitrile as the extracting solution to precipitate protein. Next, amantadine and amantadine-d15 (AMT-d15) were separated on an Agilent Poroshell 120 SB-C18 column (4.6 mm × 50 mm, 2.7 μm) using isocratic elution with solvent A (70% 0.1% formic acid) and solvent B (30% acetonitrile) at a flow rate of 0.8 mL/min. The total run time for each sample was 3 min. The system used triple-stage fragmentation transitions at m/z 152.2→135.3→107.4 for AMT quantification in the positive ion mode and m/z 167.0→150.3→118.1 for AMT-d15 quantification. The LC-MS3 assay was linear (r > 0.995) with a concentration range of 50−1500 ng/mL. The lower limit of quantification (LLOQ) was 50 ng/mL, and the intra-day and inter-day accuracies and precisions were less than 8.0% at all concentrations. In addition, the recoveries and matrix effect for AMT in human plasma were within acceptable limits. In terms of stability, AMT had no significant degradation under all conditions. All the results met the requirements of the guidelines of the Food and Drug Administration (FDA) for biological method validation. The novelty of the MS3 assay was that it presented a methodology with higher selectivity and sensitivity. This method was successfully applied to 44 human plasma samples, and the obtained quantitative results were compared with another liquid chromatography-multiple reaction monitoring (LC-MRM) method. The Passing-Bablok regression coefficients and Bland-Altman plot revealed no difference between the LC-MS3 and LC-MRM methods, implying that the developed LC-MS3 method is a reliable and accurate assay for AMT determination in human plasma. These results are also a proof of concept for determining chemicals in biological samples by the LC-MS3 strategy.
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Herrlinger E, Hau M, Redhaber DM, Greve G, Willmann D, Steimle S, Müller M, Lübbert M, Miething CC, Schüle R, Jung M. Nitroreductase-Mediated Release of Inhibitors of Lysine-Specific Demethylase 1 (LSD1) from Prodrugs in Transfected Acute Myeloid Leukaemia Cells. Chembiochem 2020; 21:2329-2347. [PMID: 32227662 PMCID: PMC7497180 DOI: 10.1002/cbic.202000138] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/29/2020] [Indexed: 12/14/2022]
Abstract
Lysine-specific demethylase 1 (LSD1) has evolved as a promising therapeutic target for cancer treatment, especially in acute myeloid leukaemia (AML). To approach the challenge of site-specific LSD1 inhibition, we developed an enzyme-prodrug system with the bacterial nitroreductase NfsB (NTR) that was expressed in the virally transfected AML cell line THP1-NTR+ . The cellular activity of the NTR was proven with a new luminescent NTR probe. We synthesised a diverse set of nitroaromatic prodrugs that by design do not affect LSD1 and are reduced by the NTR to release an active LSD1 inhibitor. The emerging side products were differentially analysed using negative controls, thereby revealing cytotoxic effects. The 2-nitroimidazolyl prodrug of a potent LSD1 inhibitor emerged as one of the best prodrug candidates with a pronounced selectivity window between wild-type and transfected THP1 cells. Our prodrugs are selectively activated and release the LSD1 inhibitor locally, proving their suitability for future targeting approaches.
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Affiliation(s)
- Eva‐Maria Herrlinger
- Department of Chemistry and Pharmacy, University of FreiburgInstitute of Pharmaceutical SciencesAlbertstrasse 2579104FreiburgGermany
| | - Mirjam Hau
- Department of Chemistry and Pharmacy, University of FreiburgInstitute of Pharmaceutical SciencesAlbertstrasse 2579104FreiburgGermany
- CIBSS – Centre for Integrative Biological Signalling StudiesUniversity of FreiburgSchänzlestrasse 1879104FreiburgGermany
| | - Desiree Melanie Redhaber
- Division of Hematology, Oncology and Stem Cell TransplantationUniversity of Freiburg Medical CenterHugstetter Strasse 5579106FreiburgGermany
| | - Gabriele Greve
- Division of Hematology, Oncology and Stem Cell TransplantationUniversity of Freiburg Medical CenterHugstetter Strasse 5579106FreiburgGermany
| | - Dominica Willmann
- Department of Urology and Center for Clinical ResearchUniversity of Freiburg Medical CenterBreisacher Strasse 6679106FreiburgGermany
| | - Simon Steimle
- Department of Chemistry and Pharmacy, University of FreiburgInstitute of Pharmaceutical SciencesAlbertstrasse 2579104FreiburgGermany
| | - Michael Müller
- Department of Chemistry and Pharmacy, University of FreiburgInstitute of Pharmaceutical SciencesAlbertstrasse 2579104FreiburgGermany
| | - Michael Lübbert
- Division of Hematology, Oncology and Stem Cell TransplantationUniversity of Freiburg Medical CenterHugstetter Strasse 5579106FreiburgGermany
- German Cancer Consortium (DKTK)FreiburgGermany
- German Cancer Research Center (DKFZ)
| | - Christoph Cornelius Miething
- Division of Hematology, Oncology and Stem Cell TransplantationUniversity of Freiburg Medical CenterHugstetter Strasse 5579106FreiburgGermany
| | - Roland Schüle
- CIBSS – Centre for Integrative Biological Signalling StudiesUniversity of FreiburgSchänzlestrasse 1879104FreiburgGermany
- Department of Urology and Center for Clinical ResearchUniversity of Freiburg Medical CenterBreisacher Strasse 6679106FreiburgGermany
| | - Manfred Jung
- Department of Chemistry and Pharmacy, University of FreiburgInstitute of Pharmaceutical SciencesAlbertstrasse 2579104FreiburgGermany
- CIBSS – Centre for Integrative Biological Signalling StudiesUniversity of FreiburgSchänzlestrasse 1879104FreiburgGermany
- German Cancer Consortium (DKTK)FreiburgGermany
- German Cancer Research Center (DKFZ)
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Wójtowicz A, Wietecha-Posłuszny R, Snamina M. Contemporary trends in drug analysis of vitreous humor: A critical review. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115935] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Mohamed FA, Khashaba PY, El-Wekil MM, Shahin RY. Fabrication of water compatible and biodegradable super-paramagnetic molecularly imprinted nanoparticles for selective separation of memantine from human serum prior to its quantification: An efficient and green pathway. Int J Biol Macromol 2019; 140:140-148. [DOI: 10.1016/j.ijbiomac.2019.08.099] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/04/2019] [Accepted: 08/11/2019] [Indexed: 11/28/2022]
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Kanasty R, Low S, Bhise N, Yang J, Peeke E, Schwarz M, Wright J, Carter B, Moorthy S, Grant T, DeBenedictis B, Bishoff M, Simses C, Bellinger AM. A pharmaceutical answer to nonadherence: Once weekly oral memantine for Alzheimer's disease. J Control Release 2019; 303:34-41. [PMID: 30928488 PMCID: PMC6587581 DOI: 10.1016/j.jconrel.2019.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 03/25/2019] [Indexed: 10/27/2022]
Abstract
Adherence to medication regimens is a major barrier to effective treatment in many disease areas, notably in dementia which causes cognitive impairment that reduces patients' awareness of non-adherence and their ability to manage medication. The development of oral dosage forms that can be infrequently dosed, and therefore improve adherence rate and facilitate direct observed therapy, has been a goal for decades. We describe the first demonstration of an oral formulation that achieves >7-day gastric retention and sustained pharmacokinetics in the challenging dog model. Gastric retention requires physical resistance of the dosage form to gastric emptying forces, which are known to be stronger in dogs than in humans, making successful gastric retention in dogs a stringent test for predicting human translatability. This formulation of memantine hydrochloride is the first oral dosage form that achieves multi-day drug release with near zero-order kinetics and efficient delivery. In the dog model, relative memantine bioavailability approaches 100% with sustained plasma levels of memantine over seven days and profiles that can be tuned by varying components of the formulation. A single gastric resident dosage form achieves an AUC equivalent to 7 daily treatments with the marketed daily capsule, with a Cmax that is no higher than the daily product. PK modeling predicts that the gastroretentive formulation will maintain therapeutic blood levels in humans when administered once weekly. The formulation methodology presented here is applicable to many water soluble drugs and may enable the development of long-acting oral therapies for a wide variety of conditions.
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Affiliation(s)
- Rosemary Kanasty
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Susan Low
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Nupura Bhise
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Jung Yang
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Erick Peeke
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Marlene Schwarz
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - James Wright
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Bennett Carter
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Saumya Moorthy
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Tyler Grant
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Ben DeBenedictis
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Megan Bishoff
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Craig Simses
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America
| | - Andrew M Bellinger
- Lyndra Therapeutics, Inc., 65 Grove St, Watertown, MA 02471, United States of America; Brigham and Women's Division of Cardiovascular Medicine, 75 Francis St, Boston, MA 02115, United States of America.
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3D spongy-like Au film for highly stable solid contact potentiometric ion selective electrode: application to drug analysis. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0349-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Sawant TB, Wakchaure VS, Rakibe UK, Musmade PB, Chaudhari BR, Mane DV. The Development and Validation of Novel, Simple High-Performance Liquid Chromatographic Method with Refractive Index Detector for Quantification of Memantine Hydrochloride in Dissolution Samples. J Chromatogr Sci 2017; 55:603-609. [DOI: 10.1093/chromsci/bmx013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Indexed: 12/13/2022]
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Douša M, Pivoňková V, Sýkora D. Optimization ofo-phtaldialdehyde/2-mercaptoethanol postcolumn reaction for the hydrophilic interaction liquid chromatography determination of memantine utilizing a silica hydride stationary phase. J Sep Sci 2016; 39:3145-55. [DOI: 10.1002/jssc.201600489] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/18/2016] [Accepted: 06/20/2016] [Indexed: 01/09/2023]
Affiliation(s)
- Michal Douša
- Zentiva, k.s. Praha; a Sanofi Company; Prague Czech Republic
| | - Veronika Pivoňková
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
| | - David Sýkora
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
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Sahu A, Narayanam M, Kurmi M, Ladumor MK, Singh S. Quantitation of memantine hydrochloride bulk drug and its tablet formulation using proton nuclear magnetic resonance spectrometry. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:632-636. [PMID: 26923624 DOI: 10.1002/mrc.4421] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 12/09/2015] [Accepted: 01/30/2016] [Indexed: 06/05/2023]
Abstract
The use of quantitative nuclear magnetic resonance spectrometry for the determination of non-UV active memantine hydrochloride with relative simplicity and precision has been demonstrated in this study. The method was developed on a 500 MHz NMR instrument and was applied to determination of the drug in a tablet formulation. The analysis was performed by taking caffeine as an internal standard and D2 O as the NMR solvent. The signal of methyl protons of memantine hydrochloride appeared at 0.75 ppm (singlet) relative to the signal of caffeine (internal standard) at 3.13 ppm (singlet). The method was found to be linear (r(2) = 0.9989) in the drug concentration range of 0.025 to 0.80 mg/ml. The maximum relative standard deviation for accuracy and precision was <2. The limits of detection and quantification were 0.04 and 0.11 mg/ml, respectively. The robustness of the method was revealed by changing nine different parameters. The deviation for each parameter was also within the acceptable limits. The study highlighted possibility of direct determination of memantine hydrochloride in pure form and in its marketed tablet formulation by the use of quantitative NMR, without the need of derivatization, as is the requirement in HPLC studies. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Archana Sahu
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar-160 062, Punjab, India
| | | | - Moolchand Kurmi
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar-160 062, Punjab, India
| | - Mayurbhai Kathadbhai Ladumor
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar-160 062, Punjab, India
| | - Saranjit Singh
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar-160 062, Punjab, India
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Moreno Páramo D, Reyna Vielma S, Rodríguez Reyes A, Hernández Ayuso I, Quiroz Mercado H. Intravitreal memantine retinal toxicity in rabbits. ACTA ACUST UNITED AC 2015; 91:65-8. [PMID: 26652730 DOI: 10.1016/j.oftal.2015.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 06/25/2015] [Accepted: 10/18/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To histologically evaluate whether the intravitreal application of memantine produces retinal toxicity in rabbits. METHODS A cross-sectional design, experimental, descriptive study was performed on 16 eyes of 16 New Zealand rabbits of 3 kg, divided in 4 groups of 4 rabbits. A dose of 70 ng/ml of intravitreal memantine was administered in Group A, a dose of 150 ng/ml in Group B, a dose of 400 ng/ml in Group C, and Group D received 1 ml of balanced salt solution. The injected eye of half of each group was enucleated 15 days after the injection, and the rest within 30 days after injection. Following enucleation, each eye was placed in 10% formaldehyde. Histopathological analysis was performed on all enucleated eyes. The animals were treated according to the guidelines of the Association for Research on Vision and Ophthalmology (ARVO). RESULTS Groups A, B and D did not show any histopathological changes after their enucleation at 15 and 30 days. Group C showed changes in the photoreceptor layer after enucleation at 15 and 30 days. CONCLUSIONS In our study, it was observed that memantine concentrations at 70 ng/ml and 150 ng/ml are safe when administered intravitreally; however, doses of 400 ng/ml produced retinal structural changes. This research should continue to assess its clinical usefulness.
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Affiliation(s)
- D Moreno Páramo
- Servicio de Retina, Hospital General de México, México, D.F., México
| | - S Reyna Vielma
- Servicio de Retina, Hospital General de México, México, D.F., México.
| | - A Rodríguez Reyes
- Servicio de Patología, Asociación para Evitar la Ceguera en México, México, D.F., México
| | - I Hernández Ayuso
- Servicio de Patología, Asociación para Evitar la Ceguera en México, México, D.F., México
| | - H Quiroz Mercado
- Department of Ophthalmology, University of Colorado Denver, Denver, Colorado, EE. UU
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Bévalot F, Cartiser N, Bottinelli C, Fanton L, Guitton J. Vitreous humor analysis for the detection of xenobiotics in forensic toxicology: a review. Forensic Toxicol 2015; 34:12-40. [PMID: 26793276 PMCID: PMC4705140 DOI: 10.1007/s11419-015-0294-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 09/21/2015] [Indexed: 01/10/2023]
Abstract
Vitreous humor (VH) is a gelatinous substance contained in the posterior chamber of the eye, playing a mechanical role in the eyeball. It has been the subject of numerous studies in various forensic applications, primarily for the assessment of postmortem interval and for postmortem chemical analysis. Since most of the xenobiotics present in the bloodstream are detected in VH after crossing the selective blood-retinal barrier, VH is an alternative matrix useful for forensic toxicology. VH analysis offers particular advantages over other biological matrices: it is less prone to postmortem redistribution, is easy to collect, has relatively few interfering compounds for the analytical process, and shows sample stability over time after death. The present study is an overview of VH physiology, drug transport and elimination. Collection, storage, analytical techniques and interpretation of results from qualitative and quantitative points of view are dealt with. The distribution of xenobiotics in VH samples is thus discussed and illustrated by a table reporting the concentrations of 106 drugs from more than 300 case reports. For this purpose, a survey was conducted of publications found in the MEDLINE database from 1969 through April 30, 2015.
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Affiliation(s)
- Fabien Bévalot
- Laboratoire LAT LUMTOX, 71 Avenue Rockefeller, 69003 Lyon, France.,Institut de Médecine Légale, Université de Lyon, Université Claude Bernard Lyon 1, Faculté de Médecine Lyon Est, 8 Avenue Rockefeller, 69373 Lyon Cedex 08, France
| | - Nathalie Cartiser
- Laboratoire de Toxicologie, ISPB-Faculté de Pharmacie, Université de Lyon, Université Claude Bernard Lyon 1, 8 Avenue Rockefeller, 69373 Lyon Cedex 08, France
| | | | - Laurent Fanton
- Département de Médecine Légale, Hôpital Edouard-Herriot, Hospices Civils de Lyon, Place D'Arsonval, 69437 Lyon Cedex 03, France.,CREATIS CNRS UMR 5220, INSERM U1044, Université de Lyon, Université Claude Bernard Lyon 1, INSA Lyon, 7 Avenue Jean Capelle, 69621 Villeurbanne Cedex, France
| | - Jérôme Guitton
- Laboratoire de Toxicologie, ISPB-Faculté de Pharmacie, Université de Lyon, Université Claude Bernard Lyon 1, 8 Avenue Rockefeller, 69373 Lyon Cedex 08, France.,Laboratoire de Pharmacologie-Toxicologie, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, 165 Chemin Grand Revoyet, 69495 Pierre Bénite Cedex, France
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Validation and application of a simple reverse phase HPLC method for in vitro dissolution studies of memantine hydrochloride tablet. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2015. [DOI: 10.1007/s40005-015-0184-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Jalalizadeh H, Raei M, Tafti RF, Farsam H, Kebriaeezadeh A, Souri E. A Stability-Indicating HPLC Method for the Determination of Memantine Hydrochloride in Dosage Forms through Derivatization with 1-Fluoro-2,4-dinitrobenzene. Sci Pharm 2014; 82:265-79. [PMID: 24959398 PMCID: PMC4065122 DOI: 10.3797/scipharm.1310-09] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 12/09/2013] [Indexed: 11/22/2022] Open
Abstract
Memantine is chemically a tricyclic amine and is used for Parkinson’s disease and movement disorders. Although several HPLC methods with different derivatization reagents have been developed for the determination of memantine in biological fluids, there are some complications which limit the use of these methods in routine analysis of memantine in in vitro tests. We established a simple, sensitive, precise, and accurate HPLC method for the quantification of memantine in dosage forms. Pre-column derivatization of memantine was performed with 1-fluoro-2,4-dinitrobenzene and the reaction product was separated on a Nova-Pak C18 column. A mixture of acetonitrile and sodium dihydrogenphosphate (pH 2.5; 0.05 M) (70: 30, v/v) was used as the mobile phase. UV detection was performed at 360 nm. Forced degradation studies were performed on a powdered tablet sample of memantine hydro-chloride using acidic (0.1 M hydrochloric acid), basic (0.1 M sodium hydroxide), oxidative (10% hydrogen peroxide), thermal (105°C), photolytic, and humidity conditions. Good linearity (r2=0.999) was obtained over the range of 1–12 μg mL−1 of memantine hydrochloride with acceptable within-day and between-day precision values in the range of 0.05–0.95%. The proposed method was used for the assay determination and dissolution rate study of memantine dosage forms with excellent specificity.
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Affiliation(s)
- Hassan Jalalizadeh
- Department of Research & Development, Osvah Pharmaceutical Co. Tehran, Iran
| | - Mahdi Raei
- Department of Research & Development, Osvah Pharmaceutical Co. Tehran, Iran
| | | | - Hassan Farsam
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Kebriaeezadeh
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. ; Department of Pharmacoeconomy and Pharmaceutical Administration, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Effat Souri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Prieto E, Pérez S, Pablo LE, García MA, Bregante MA. Vitreous pharmacokinetics and bioavailability of memantine after subtenon, intravenous, and intravitreal administration in rabbits. J Ocul Pharmacol Ther 2014; 30:392-9. [PMID: 24597794 DOI: 10.1089/jop.2013.0193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
PURPOSE This study evaluated the vitreous pharmacokinetics and vitreous bioavailability of memantine following posterior-subtenon administration (PST) compared to intravitreal (INT) and intravenous routes (INV) in rabbits. METHODS Vitreous pharmacokinetic analysis was performed on female New Zealand (NZ) albino rabbits after PST, INT, and INV administration and calculating the pharmacokinetic parameters that describe memantine vitreous distribution. The vitreous bioavailability (F) and the relative vitreous bioavailability of memantine was estimated after posterior-subtenon administration (Frel (pst/int)) and after intravenous route (Frel (inv/int)) compared with intravitreal administration. Relative vitreous bioavailability of memantine was also estimated following PST administration compared with vitreous concentrations after intravenous administration (Frel (pst/inv)). RESULTS Memantine kinetics in the vitreous of NZ albino rabbits after PST administration can be explained by a one-compartment model, which was characterized by a fast absorption process, and a short terminal half-life. Vitreous pharmacokinetics following INV administration was also characterized by a fast absorption process, a terminal half-life significantly longer than the subtenon route, and low area under the curve values. High vitreous bioavailability after PST was observed, and the relative vitreous bioavailability of memantine following PST administration (0.53%) was greater than for intravenous administration (0.02%). CONCLUSIONS Our results suggest that memantine reaches the vitreous after PST administration by local diffusion. These data also show that local diffusion of the drug is responsible for greater vitreous availability of memantine following PST administration compared with INV administration.
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Affiliation(s)
- Esther Prieto
- 1 Department of Ophthalmology, Miguel Servet University Hospital and Aragon Health Sciences Institute (I+CS), University of Zaragoza , Zaragoza, Spain
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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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Yan H, Liu X, Cui F, Yun H, Li J, Ding S, Yang D, Zhang Z. Determination of amantadine and rimantadine in chicken muscle by QuEChERS pretreatment method and UHPLC coupled with LTQ Orbitrap mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 938:8-13. [DOI: 10.1016/j.jchromb.2013.08.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/07/2013] [Accepted: 08/13/2013] [Indexed: 11/24/2022]
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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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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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Prieto E, Puente B, Uixera A, Garcia de Jalon J, Perez S, Pablo L, Irache J, Garcia M, Bregante M. Gantrez AN Nanoparticles for Ocular Delivery of Memantine: In vitro Release Evaluation in Albino Rabbits. Ophthalmic Res 2012; 48:109-17. [DOI: 10.1159/000337136] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Accepted: 01/20/2012] [Indexed: 11/19/2022]
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