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Backer L, Buschmann H, Kinzig M, Sörgel F, Scherf-Clavel O, Holzgrabe U. Application of advanced high resolution mass spectrometric techniques for the analysis of losartan potassium regarding known and unknown impurities. J Pharm Biomed Anal 2024; 240:115955. [PMID: 38198883 DOI: 10.1016/j.jpba.2023.115955] [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: 11/29/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
Recalls of medicinal products can cause supply bottlenecks. This is often due to the findings of unexpected impurities that pose a health risk to patients. A recent example is losartan potassium which was contaminated with azido-impurities. The choice of the analytical method determines which substances can be detected and thus controlled. In this study a combination of an untargeted screening approach for impurities and a targeted evaluation of high-resolution mass spectrometry data was applied to search for impurities not described so far, leaving out a precise quantification. Six losartan potassium samples were studied regarding known and unknown impurities and hence highlight the applicability and capability of the approach. For separation a Zorbax RR StableBond C18 column (3.0 ×100 mm, particle size of 3.5 µm, pore size of 80 Å), a gradient elution and an electrospray ionization in positive and negative mode for mass spectrometric detection was used. An information-dependent acquisition method was applied for the measurement of losartan potassium samples. The untargeted data evaluation using general unknown comparative screening revealed the presence of N-methyl-2-pyrrolidone (NMP) and another impurity from synthesis. The identity of NMP was corroborated by a spiking experiment and the amount was estimated by means of standard addition. A targeted data evaluation by generating extracted ion chromatograms resulted in finding of four additional impurities. Combined approaches like this are needed to detect and respond to changes in the quality of drugs precociously.
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Affiliation(s)
- Laura Backer
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany
| | - Helmut Buschmann
- RD&C Research, Development & Consulting GmbH, 1170 Vienna, Austria
| | - Martina Kinzig
- IBMP - Institute for Biomedical and Pharmaceutical Research, 90562 Nürnberg-Heroldsberg, Germany
| | - Fritz Sörgel
- IBMP - Institute for Biomedical and Pharmaceutical Research, 90562 Nürnberg-Heroldsberg, Germany
| | - Oliver Scherf-Clavel
- Ludwig-Maximilians-Universität München, Department of Pharmacy, 81377 Munich, Germany.
| | - Ulrike Holzgrabe
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany.
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2
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Chaves-Filho AB, Diniz LS, Santos RS, Lima RS, Oreliana H, Pinto IFD, Dantas LS, Inague A, Faria RL, Medeiros MHG, Glezer I, Festuccia WT, Yoshinaga MY, Miyamoto S. Plasma oxylipin profiling by high resolution mass spectrometry reveal signatures of inflammation and hypermetabolism in amyotrophic lateral sclerosis. Free Radic Biol Med 2023; 208:285-298. [PMID: 37619957 DOI: 10.1016/j.freeradbiomed.2023.08.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/17/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by progressive loss of motor neurons, systemic hypermetabolism, and inflammation. In this context, oxylipins have been investigated as signaling molecules linked to neurodegeneration, although their specific role in ALS remains unclear. Importantly, most methods focused on oxylipin analysis are based on low-resolution mass spectrometry, which usually confers high sensitivity, but not great accuracy for molecular characterization, as provided by high-resolution MS (HRMS). Here, we established an ultra-high performance liquid chromatography HRMS (LC-HRMS) method for simultaneous analysis of 126 oxylipins in plasma. Intra- and inter-day method validation showed high sensitivity (0.3-25 pg), accuracy and precision for more than 90% of quality controls. This method was applied in plasma of ALS rats overexpressing the mutant human Cu/Zn-superoxide dismutase gene (SOD1-G93A) at asymptomatic (ALS 70 days old) and symptomatic stages (ALS 120 days old), and their respective age-matched wild type controls. From the 56 oxylipins identified in plasma, 17 species were significantly altered. Remarkably, most of oxylipins linked to inflammation and oxidative stress derived from arachidonic acid (AA), like prostaglandins and mono-hydroxides, were increased in ALS 120 d rats. In addition, ketones derived from AA and linoleic acid (LA) were increased in both WT 120 d and ALS 120 d groups, supporting that age also modulates oxylipin metabolism in plasma. Interestingly, the LA-derived diols involved in fatty acid uptake and β-oxidation, 9(10)-DiHOME and 12(13)-DiHOME, were decreased in ALS 120 d rats and showed significant synergic effects between age and disease factors. In summary, we validated a high-throughput LC-HRMS method for oxylipin analysis and provided a comprehensive overview of plasma oxylipins involved in ALS disease progression. Noteworthy, the oxylipins altered in plasma have potential to be investigated as biomarkers for inflammation and hypermetabolism in ALS.
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Affiliation(s)
- Adriano B Chaves-Filho
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil; Departamento de Fisiologia, Instituto de Ciências Biomédicas, University of São Paulo, Brazil.
| | - Larissa S Diniz
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Rosangela S Santos
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Rodrigo S Lima
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Hector Oreliana
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Isabella F D Pinto
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Lucas S Dantas
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Alex Inague
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Rodrigo L Faria
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Marisa H G Medeiros
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Isaías Glezer
- Departamento de Bioquímica, Escola Paulista de Medicina, Federal University of São Paulo, Brazil
| | - William T Festuccia
- Departamento de Fisiologia, Instituto de Ciências Biomédicas, University of São Paulo, Brazil
| | - Marcos Y Yoshinaga
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil
| | - Sayuri Miyamoto
- Departamento de Bioquímica, Instituto de Química, University of São Paulo, Brazil.
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3
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Luo W, van Beek TA, Chen B, Zuilhof H, Salentijn GI. Bifunctional Ti 4+-modified paper for selective extraction or removal of phospholipids and paper spray mass spectrometry for bioanalysis in urine and plasma. Anal Chim Acta 2023; 1278:341673. [PMID: 37709425 DOI: 10.1016/j.aca.2023.341673] [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: 06/06/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND Phospholipids (PLs) are major constituents of cell membranes, play important roles in cell proliferation and death, as well as in signal transduction, and therefore are relevant biomarkers for different pathologies. On the other hand, when the analysis of small compounds, such as therapeutics in blood is desired, then phospholipids are part of the matrix and cause serious interference during analysis. Currently, both the analysis and removal of PLs from biological samples are limited by extensive sample preparation and instrumental separation. RESULTS A fast and simple quantitative Ti4+-modified paper spray tandem mass spectrometric (TiPS-MS/MS) method was established in urine, where the enrichment of phospholipids was achieved, as well as reduction of matrix effects (primarily caused by high salt content) that ultimately led to improved sensitivity and selectivity. The method could achieve a physiologically relevant limit of detection (0.01-0.03 μg mL-1). Also, the usefulness of the Ti4+-modified paper was investigated in the opposite mode, namely for the selective removal of phospholipids from matrices such as plasma. Clonidine is used as model compound, as the detection of this compound is known to suffer from ion suppression by phospholipids. Compared with blank paper spray tandem mass spectrometry, the limit of detection could be improved from 0.3 μg mL-1 to 0.03 μg mL-1 by employing a Ti4+-modified paper on top of the spray tip to capture phospholipids from the sample. SIGNIFICANCE AND NOVELTY A novel Ti4+-modified paper was developed to allow for rapid solid-phase extraction of phospholipids from urine or selective removal from plasma, followed by direct paper spray mass spectrometric detection as a fast and convenient sample preparation and analysis combination. The paper properties are based on the Ti4+ metal ion, which can selectively bind phosphate-containing compounds under acidic conditions, and its applicability was demonstrated in relevant biological matrices.
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Affiliation(s)
- Wei Luo
- Key Laboratory of Phytochemical R&D of Hunan Province and Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research of Ministry of Education, Hunan Normal University, Changsha, 410081, China; Laboratory of Organic Chemistry, Wageningen University, 6708, WE Wageningen, the Netherlands
| | - Teris A van Beek
- Laboratory of Organic Chemistry, Wageningen University, 6708, WE Wageningen, the Netherlands
| | - Bo Chen
- Key Laboratory of Phytochemical R&D of Hunan Province and Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research of Ministry of Education, Hunan Normal University, Changsha, 410081, China.
| | - Han Zuilhof
- Key Laboratory of Phytochemical R&D of Hunan Province and Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research of Ministry of Education, Hunan Normal University, Changsha, 410081, China; Laboratory of Organic Chemistry, Wageningen University, 6708, WE Wageningen, the Netherlands.
| | - Gert Ij Salentijn
- Laboratory of Organic Chemistry, Wageningen University, 6708, WE Wageningen, the Netherlands; Wageningen Food Safety Research (WFSR), Wageningen University & Research, 6700, AE Wageningen, the Netherlands.
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4
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Nishijo N, Hayama T, Tomita R, Fujioka T. Accurate LC-MS/MS Analysis of Diacylglycerols in Human Plasma with Eliminating Matrix Effect by Phospholipids Using Fluorous Biphasic Extraction. Anal Chem 2023; 95:14898-14904. [PMID: 37767921 DOI: 10.1021/acs.analchem.3c01998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
We developed an accurate method for determining diacylglycerols (DAGs) in human plasma using a fluorous biphasic liquid-liquid extraction method, followed by liquid chromatography with tandem mass spectrometry (LC-MS/MS) analysis. The lipid mixture in the plasma was first extracted with chloroform by using the Bligh-Dyer method. The resulting solution was subjected to fluorous biphasic liquid-liquid extraction to remove phospholipids, which are known to cause matrix effects during the LC-MS/MS analysis. In this method, phospholipids in a lipid mixture solution (nonfluorous solvent) were selectively extracted to tetradecafluorohexane (fluorous solvent) via the specificity of fluorous affinity by forming a complex with a perfluoropolyethercarboxylic acid-lanthanum(III) salt. The remaining DAGs in the nonfluorous solvent could be directly injected into the LC system through the positive electrospray ionization-MS/MS mode. The removal rate of the phospholipids through the fluorous biphasic extraction was more than 99.9%; thus, the matrix-effect-eliminating analysis of DAGs in human plasma with LC-MS/MS was enabled. Furthermore, the applicability of this method and the possibility of using DAGs as biomarkers were evaluated by applying this method to human plasma samples obtained from major depressive disorder as a related disease.
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Affiliation(s)
- Nao Nishijo
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka 814-0180, Japan
| | - Tadashi Hayama
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka 814-0180, Japan
| | - Ryoko Tomita
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka 814-0180, Japan
| | - Toshihiro Fujioka
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka 814-0180, Japan
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5
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Li Y, Zhang D, Mo Y, Zeng T, Wu T, Liu L, Zhang H, Chen C. Simultaneous determination of sex hormones and bile acids in rat plasma using a liquid chromatography-tandem mass spectrometry method. J Pharm Biomed Anal 2023; 223:115139. [DOI: 10.1016/j.jpba.2022.115139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/16/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022]
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Shah PA, Sharma VS, Vanol PG, Sanyal M, Shrivastav PS. Hybrid SPE to overcome interference due to phospholipids for determination of neratinib in human plasma using UPLC-MS/MS. Biomed Chromatogr 2022; 36:e5416. [PMID: 35624555 DOI: 10.1002/bmc.5416] [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: 04/22/2022] [Revised: 05/22/2022] [Accepted: 05/25/2022] [Indexed: 11/05/2022]
Abstract
A reliable and robust bioanalytical method is developed to quantify neratinib, a tyrosine kinase inhibitor in human plasma using ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The extraction of neratinib and its deuterated internal standard, neratinib-d6 was successfully performed on hybrid solid phase extraction (SPE) ultra-cartridges to remove the interference of phospholipids and proteins. Chromatographic analysis was done on UPLC BEH C18 (50 × 2.1 mm, 1.7 μm) column using 0.1% formic acid and acetonitrile under gradient conditions. The total analysis time was 1.5 min. The quantification of neratinib was achieved using electrospray ionization source operated in the positive ion multiple reaction monitoring mode. The mass transitions of neratinib and neratinib were m/z 557.3/112.1 and m/z 563.1/118.2, respectively. The linear concentration range for neratinib was 0.5-500 ng/mL, which adequately covers concentration levels expected in real subject samples. The assay was extensively validated for various validation parameters following standard guidelines for a bioanalytical assay. The intra- and inter-batch precision was ≤ 4.6 % and neratinib was found to be stable under various stability conditions. The mean IS-normalized matrix factor and recovery was 0.997 and 95.4 %, respectively. The validated method was successfully applied to a pharmacokinetic study in healthy subjects with different doses.
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Affiliation(s)
- Priyanka A Shah
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, India
| | - Vinay S Sharma
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, India
| | - Pravin G Vanol
- Department of Chemistry, St. Xavier's College, Navrangpura, Ahmedabad, India
| | - Mallika Sanyal
- Department of Chemistry, St. Xavier's College, Navrangpura, Ahmedabad, India
| | - Pranav S Shrivastav
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, India
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7
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Determination of IQZ23 in rat plasma using LC-MS/MS: consideration for matrix effect and internal standard interference. Bioanalysis 2022; 14:455-465. [PMID: 35484959 DOI: 10.4155/bio-2022-0040] [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: 11/17/2022] Open
Abstract
Aim: IQZ23, a novel β-indoloquinazoline derivative, is a potential therapeutic agent for obesity and related metabolic disorders. To assist pharmacokinetics evaluation, a quantitative method for IQZ23 in rat plasma is required. Methods & Results: An LC-MS/MS assay for the determination of IQZ23 in rat plasma was developed and validated for the first time. Chromatographic conditions were optimized to ameliorate matrix effect with direct monitoring of typical phospholipids, including phosphatidylcholine and lysophosphatidylcholine. The structural analog internal standard (SYSU-3d) was set at a proper concentration to avoid analyte sensitivity loss caused by internal standard interference. The well-validated method was employed in the pharmacokinetics study of IQZ23 in Sprague-Dawley rats. Conclusion: This study provided valuable references for the further preclinical study of IQZ23.
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8
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Scheunemann A, Elsner K, Germerott T, Hess C, Röhrich J. Simultaneous quantification of 18 different phytocannabinoids in serum using a highly sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1173:122685. [PMID: 33882447 DOI: 10.1016/j.jchromb.2021.122685] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 02/22/2021] [Accepted: 03/29/2021] [Indexed: 11/18/2022]
Abstract
The potential therapeutic effects of various phytocannabinoids and the availability of multiple cannabis-based medicines make it desirable to have an analytical method that simultaneously quantifies a wide range of cannabinoids in blood, beyond delta-9-tetrahydrocannabinol and its metabolites. A liquid chromatography tandem mass spectrometry (LC-MS/MS) method for quantification of 18 phytocannabinoids and cannabinoid metabolites in serum was developed and validated. The method enables simultaneous detection of delta-9-tetrahydrocannabinol, cannabidiol, cannabinol, cannabigerol, cannabichromene, cannabicyclol, tetrahydrocannabivarin and cannabidivarin and their acidic precursors tetrahydocannabinolic acid A, cannabidiolic acid, cannabinolic acid, cannabigerolic acid, cannabichromenic acid, cannabicyclolic acid, tetrahydrocannabivarinic acid and cannabidivarinic acid as well as the delta-9-tetrahydrocannabinol metabolites 11-hydroxy-tetrahydrocannabinol and 11-nor-9-carboxy-tetrahydrocannabinol. Limits of detection ranged from 0.0004 to 1 ng/mL and limits of quantification ranged from 0.004 to 2 ng/mL. Calibration curves of all analytes were linear over the whole calibration range. Recovery rates of 52 to 86% were obtained for all analytes except for cannabicyclol (49%), 11-nor-9-carboxy-tetrahydrocannabinol (46%), cannabichromenic acid (44%) and cannabidivarinic acid (36%). Acceptable bias and precision data were demonstrated for all analytes. The method was successfully applied to 55 forensic serum samples, obtained from the Institute of Legal Medicine Mainz.
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Affiliation(s)
- A Scheunemann
- Institute of Legal Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Am Pulverturm 3, 55131 Mainz, Germany.
| | - K Elsner
- Institute of Legal Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Am Pulverturm 3, 55131 Mainz, Germany
| | - T Germerott
- Institute of Legal Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Am Pulverturm 3, 55131 Mainz, Germany
| | - C Hess
- Institute of Legal Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Am Pulverturm 3, 55131 Mainz, Germany
| | - J Röhrich
- Institute of Legal Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Am Pulverturm 3, 55131 Mainz, Germany
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9
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Turnpenny P, Dickie A, Malec J, McClements J. Retention-directed and selectivity controlled chromatographic resolution: Rapid post-hoc analysis of DMPK samples to achieve high-throughput LC-MS separation. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1164:122514. [PMID: 33477099 DOI: 10.1016/j.jchromb.2020.122514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 11/14/2020] [Accepted: 12/18/2020] [Indexed: 11/19/2022]
Abstract
High quality chromatographic separation underpins robustness in LC-MS, frequently the analytical method of choice for pharmaceutical drug discovery work. The potential improvements in chromatographic selectivity afforded by serial column coupling (SCC), provide a useful means to enhance the resolution of complex samples. In this work, we present a revised high-throughput form of SCC, in which just two individual mixed phase columns were coupled together and combined with a gradient-optimised, retention-directed ultra-high pressure method to achieve rapid separations, with no further method optimisation necessary. The overall performance was evaluated from an open access DMPK analytical working environment perspective; where in anticipation of bioanalytical or metabolite identification chromatography challenges, or with the knowledge that stronger resolution was required for in-vitro sample analysis, the methodology could be immediately implemented by the analyst. Retention-directed selection of a shallow SCC gradient method was successful in separating peaks throughout the chromatographic window, resulting in a runtime still congruent to high-throughput analyses (3.5 min). In-vitro assay sample interferences were resolved 44-72% of the time, and the overall resolving power for isomeric separations significantly improved against single column comparisons (1.7-fold mean RS improvement). Over a sustained period of time in our laboratory, SCC methods have been used for metabolite identification and bioanalytical samples, where both convenience and effectiveness in solving analytical challenges has been consistently demonstrated. Examples that highlight SCC chromatography, and a guided discussion of the main high-throughput considerations, are included. The technique offers wide applicability, and we would recommend it as a toolbox consideration to the laboratory analyst.
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Affiliation(s)
- Paul Turnpenny
- Evotec, Department of Drug Metabolism & Pharmacokinetics, Abingdon, Oxon, UK
| | - Anthony Dickie
- Evotec, Department of Drug Metabolism & Pharmacokinetics, Abingdon, Oxon, UK.
| | - Jed Malec
- Evotec, Department of Drug Metabolism & Pharmacokinetics, Abingdon, Oxon, UK
| | - Jordan McClements
- Evotec, Department of Drug Metabolism & Pharmacokinetics, Abingdon, Oxon, UK
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10
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Thomas SL, Thacker JB, Schug KA, Maráková K. Sample preparation and fractionation techniques for intact proteins for mass spectrometric analysis. J Sep Sci 2020; 44:211-246. [DOI: 10.1002/jssc.202000936] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Shannon L. Thomas
- Department of Chemistry & Biochemistry The University of Texas Arlington Arlington Texas USA
| | - Jonathan B. Thacker
- Department of Chemistry & Biochemistry The University of Texas Arlington Arlington Texas USA
| | - Kevin A. Schug
- Department of Chemistry & Biochemistry The University of Texas Arlington Arlington Texas USA
| | - Katarína Maráková
- Department of Pharmaceutical Analysis and Nuclear Pharmacy Faculty of Pharmacy Comenius University in Bratislava Bratislava Slovakia
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van der Laan T, Dubbelman AC, Duisters K, Kindt A, Harms AC, Hankemeier T. High-Throughput Fractionation Coupled to Mass Spectrometry for Improved Quantitation in Metabolomics. Anal Chem 2020; 92:14330-14338. [PMID: 33054161 PMCID: PMC7871441 DOI: 10.1021/acs.analchem.0c01375] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
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Metabolomics is emerging as an important field in life sciences. However, a weakness of
current mass spectrometry (MS) based metabolomics platforms is the time-consuming
analysis and the occurrence of severe matrix effects in complex mixtures. To overcome
this problem, we have developed an automated and fast fractionation module coupled
online to MS. The fractionation is realized by the implementation of three consecutive
high performance solid-phase extraction columns consisting of a reversed phase,
mixed-mode anion exchange, and mixed-mode cation exchange sorbent chemistry. The
different chemistries resulted in an efficient interaction with a wide range of
metabolites based on polarity, charge, and allocation of important matrix interferences
like salts and phospholipids. The use of short columns and direct solvent switches
allowed for fast screening (3 min per polarity). In total, 50 commonly reported
diagnostic or explorative biomarkers were validated with a limit of quantification that
was comparable with conventional LC–MS(/MS). In comparison with a flow injection
analysis without fractionation, ion suppression decreased from 89% to 25%, and the
sensitivity was 21 times higher. The validated method was used to investigate the
effects of circadian rhythm and food intake on several metabolite classes. The
significant diurnal changes that were observed stress the importance of standardized
sampling times and fasting states when metabolite biomarkers are used. Our method
demonstrates a fast approach for global profiling of the metabolome. This brings
metabolomics one step closer to implementation into the clinic.
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Affiliation(s)
- Tom van der Laan
- Analytical Biosciences and Metabolomics, Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden 2333 CC, The Netherlands
| | - Anne-Charlotte Dubbelman
- Analytical Biosciences and Metabolomics, Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden 2333 CC, The Netherlands
| | - Kevin Duisters
- Mathematical Institute, Leiden University, Leiden 2333 CA, The Netherlands
| | - Alida Kindt
- Analytical Biosciences and Metabolomics, Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden 2333 CC, The Netherlands
| | - Amy C Harms
- Analytical Biosciences and Metabolomics, Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden 2333 CC, The Netherlands
| | - Thomas Hankemeier
- Analytical Biosciences and Metabolomics, Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden 2333 CC, The Netherlands
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12
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Congener-specific determination of hydroxylated polychlorinated biphenyls by polar-embedded reversed-phase liquid chromatography-tandem mass spectrometry. J Chromatogr A 2020; 1626:461353. [PMID: 32797833 DOI: 10.1016/j.chroma.2020.461353] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 11/22/2022]
Abstract
This paper reports the development of an LC-ESI-MS2 method for the sensitive determination of hydroxylated polychlorinated biphenyls (OH-PCBs) in human serum samples. Congener-specific separation was achieved by using a polar-embedded stationary phase, previously optimized for the working group, which provided better separation of isobaric compounds than the common octadecylsilane phases. MS fragmentation patterns and energies showed differences among OH-PCB congeners, mainly depending on the position of OH-group and the number of chlorine atoms in the molecule, although the most intense transitions were always those corresponding to the neutral loss of an HCl group from the quasi-molecular ion cluster. The method allowed the determination of OH-PCBs with good linearity (dynamic linear range of four orders of magnitude with R2 higher than 0.995) and precision (relative standard deviations of absolute areas lower than 10%), and with better sensitivity than other similar methods previously described in the literature. Matrix effect has been evaluated and reduced to less than 10% by the addition of isotopically labeled standards and a 10-fold dilution of the final sample extract. The low iLODs provided by the developed method (from 1.2 to 5.4 fg µL-1 for all the OH-PCBs studied, except 4'-OHCB108, whose iLOD was 61 fg µL-1) allows dilution without losses of detected peaks. Finally, the applicability of the method has been demonstrated by analyzing human serum samples belonging to an interlaboratory exercise.
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13
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Yang J, Li X, Li W, Xi X, Du Q, Pan F, Liu S. An improved LC-MS/MS method for determination of docetaxel and its application to population pharmacokinetic study in Chinese cancer patients. Biomed Chromatogr 2020; 34:e4857. [PMID: 32307730 DOI: 10.1002/bmc.4857] [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: 09/17/2019] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 11/11/2022]
Abstract
Because of its unpredictable side effects and efficacy, the anticancer drug docetaxel (DTX) requires improved characterisation of its pharmacokinetic profiles through population pharmacokinetic studies. A sensitive and rugged LC-MS/MS method for the detection of DTX in human plasma was developed and optimised using paclitaxel as an internal standard (IS). The plasma samples underwent rapid extraction using hybrid solid-phase extraction-protein precipitation. The analyte and IS were separated with an isocratic system on a Zorbax Eclipse Plus C18 column using water containing 0.05% acetic acid along with 20 μM of sodium acetate and methanol (30/70, v/v) as the mobile phase. Quantification was performed using a triple quadrupole mass spectrometer through multiple reaction monitoring in positive mode, using the m/z 830.3 → 548.8 and m/z 876.3 → 307.7 transitions for DTX and paclitaxel, respectively. The range of the calibration curve was 1-500 ng/mL for DTX, and the linear correlation coefficient was >0.99. The accuracies ranged from -4.6 to 4.2%, and the precision was no higher than 7.0% for the analytes. No significant matrix effect was observed. Both DTX and the IS showed considerable recovery. This method was finally applied to the establishment of a population pharmacokinetic model to optimise the clinical use of DTX.
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Affiliation(s)
- Jia Yang
- Department of Pharmacy, The Third Affiliated Hospital (Gener Hospital), Chongqing Medical University, Chongqing, China
| | - Xingang Li
- Department of Pharmacy, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wenjun Li
- Department of Pharmacy, The Third Affiliated Hospital (Gener Hospital), Chongqing Medical University, Chongqing, China
| | - Xin Xi
- Department of Pharmacy, The Third Affiliated Hospital (Gener Hospital), Chongqing Medical University, Chongqing, China
| | - Qian Du
- Department of Pharmacy, The Third Affiliated Hospital (Gener Hospital), Chongqing Medical University, Chongqing, China
| | - Feng Pan
- Department of Biomedical Analysis and Testing Center, Medical University of the Army Force, Chongqing, China
| | - Songqing Liu
- Department of Pharmacy, The Third Affiliated Hospital (Gener Hospital), Chongqing Medical University, Chongqing, China
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14
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Huang S, Wang J, Guo Z, Wang Y, Liu C. Quantitative Measurement of Melittin in Asian Honeybee Venom Using a New Method Including UPLC-QqTOF-MS. Toxins (Basel) 2020; 12:toxins12070437. [PMID: 32635485 PMCID: PMC7404999 DOI: 10.3390/toxins12070437] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 12/28/2022] Open
Abstract
Asian honeybee venom is widely used in traditional oriental medicine. Melittin is the main component of Asian honeybee venom. In the present study, an ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) method was used for accurate qualitative and quantitative analyses of melittin in Asian honeybee venom. The results showed that the dynamic linear range of melittin was from 0.094 to 20 μg/mL, and the limit of quantification was 0.3125 μg/mL. The spiking recovery of melittin in honeybee venom ranged from 84.88% to 93.05%. Eighteen Asian honeybee venom samples in eighteen batches were collected from two different zones of China, and their melittin contents were measured. The contents of melittin in Asian honeybee venom samples was 33.9–46.23% of dry weight. This method proved a useful tool for the rapid evaluation of the authenticity and quality of Asian honeybee venom in terms of the melittin contents, and will contribute to a broader understanding of Asian honeybee venom.
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15
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An G, Bach T, Abdallah I, Nalbant D. Aspects of matrix and analyte effects in clinical pharmacokinetic sample analyses using LC-ESI/MS/MS - Two case examples. J Pharm Biomed Anal 2020; 183:113135. [PMID: 32062015 DOI: 10.1016/j.jpba.2020.113135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/03/2020] [Accepted: 01/27/2020] [Indexed: 10/25/2022]
Abstract
The increasing focus on high throughput sample analysis has led to the common practice of using simplest sample preparation method possible (i.e. protein precipitation) and shortest sample run-time possible. This means that there will be two aspects of compromise: the first compromise is made between sample cleanliness and sample preparation speed since protein precipitation does not provide very clean final extract; the second compromise is made between peak separation and run-time, meaning that sometimes overlap or co-elution of some peaks has to be accepted. The first compromise may lead to matrix effect, which is caused by co-eluting endogenous substances such as phospholipids. The second compromise can result in analyte effect, which is caused by co-eluting analyte(s). We have encountered the issue of matrix/analyte-mediated ion suppression in multiple preclinical and clinical pharmacokinetic projects during bioanalytical method development/validation or biological sample analysis of many small molecule drugs. As these matrix/analyte effects could occur in different situations with different "syndromes", sometimes it can be easily overlooked, leading to unreliable result, poor sensitivity, and prolonged assay development process. To increase the awareness of this important issue, in this paper we presented two real case examples on signal suppression caused by either endogenous phospholipids or co-eluting analyte.
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Affiliation(s)
- Guohua An
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa USA.
| | - Thanh Bach
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa USA
| | - Inas Abdallah
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa USA; Analytical Chemistry Department, Faculty of Pharmacy, University of Sadat City, Egypt
| | - Demet Nalbant
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa USA
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16
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Ghosh C. Relative matrix effects: A step forward using standard line slopes and ANOVA analysis. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.11.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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17
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Nozaki K, Nakabayashi Y, Murakami T, Miyazato A, Osaka I. Novel approach to enhance sensitivity in surface-assisted laser desorption/ionization mass spectrometry imaging using deposited organic-inorganic hybrid matrices. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:612-619. [PMID: 31070274 DOI: 10.1002/jms.4370] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/16/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
Sample pretreatment is key to obtaining good data in matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). Although sublimation is one of the best methods for obtaining homogenously fine organic matrix crystals, its sensitivity can be low due to the lack of a solvent extraction effect. We investigated the effect of incorporating a thin film of metal formed by zirconium (Zr) sputtering into the sublimation process for MALDI matrix deposition for improving the detection sensitivity in mouse liver tissue sections treated with olanzapine. The matrix-enhanced surface-assisted laser desorption/ionization (ME-SALDI) method, where a matrix was formed by sputtering Zr to form a thin nanoparticle layer before depositing MALDI organic matrix comprising α-cyano-4-hydroxycinnamic acid (CHCA) by sublimation, resulted in a significant improvement in sensitivity, with the ion intensity of olanzapine being about 1800 times that observed using the MALDI method, comprising CHCA sublimation alone. When Zr sputtering was performed after CHCA deposition, however, no such enhancement in sensitivity was observed. The enhanced sensitivity due to Zr sputtering was also observed when the CHCA solution was applied by spraying, being about twice as high as that observed by CHCA spraying alone. In addition, the detection sensitivity of these various pretreatment methods was similar for endogenous glutathione. Given that sample preparation using the ME-SALDI-MSI method, which combines Zr sputtering with the sublimation method for depositing an organic matrix, does not involve a solvent, delocalization problems such as migration of analytes observed after matrix spraying and washing with aqueous solutions as sample pretreatment are not expected. Therefore, ME-Zr-SALDI-MSI is a novel sample pretreatment method that can improve the sensitivity of analytes while maintaining high spatial resolution in MALDI-MSI.
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Affiliation(s)
- Kazuyoshi Nozaki
- Bioimaging, Analysis & Pharmacokinetics Research Labs. Drug Discovery research, Astellas Pharma Inc, 21 Miyukigaoka, Tsukuba-shi, Ibaraki, 305-8585, Japan
| | - Yuji Nakabayashi
- Center for Nano Material and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Tatsuya Murakami
- Center for Nano Material and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Akio Miyazato
- Center for Nano Material and Technology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
| | - Issey Osaka
- Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu-City, Toyama, 939-0398, Japan
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Measurement of apixaban, dabigatran, edoxaban and rivaroxaban in human plasma using automated online solid-phase extraction combined with ultra-performance liquid chromatography-tandem mass spectrometry and its comparison with coagulation assays. Clin Chim Acta 2018; 486:347-356. [DOI: 10.1016/j.cca.2018.08.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 08/06/2018] [Accepted: 08/12/2018] [Indexed: 01/14/2023]
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19
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Lei M, Gan W, Sun Y. HPLC-MS/MS analysis of peramivir in rat plasma: Elimination of matrix effect using the phospholipid-removal solid-phase extraction method. Biomed Chromatogr 2017; 32. [PMID: 28976569 DOI: 10.1002/bmc.4103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/27/2017] [Accepted: 09/26/2017] [Indexed: 12/30/2022]
Abstract
A simple HPLC-MS/MS method has been developed for the determination of peramivir in rat plasma in the present study. The analytes were separated on a C18 column (50 × 2.1 mm, 1.7 μm) and a triple-quadrupole mass spectrometer equipped with an electrospray ionization source was applied for the detection. A phospholipid-free cartridge solid-phase extraction was used to pretreat the plasma and eliminate the endogenous phospholipid. The in-source collision-induced dissociation approach showed that this pretreatment could result in negligible ion suppression from the extracted sample and could produce cleaner samples when compared with the protein precipitation. The method was linear over the concentration range of 0.12-1200.0 ng/mL for peramivir. The method was validated and successfully applied to a pharmacokinetic study after peramivir was orally and intravenously administered to Sprague-Dawley rats.
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Affiliation(s)
- Mingdao Lei
- Department of Pharmacy, Jiangxi Maternal and Child Health Hospital, Nanchang, China.,Division of Pharmaceutics, National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Wei Gan
- Division of Pharmaceutics, National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Yongbing Sun
- Division of Pharmaceutics, National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
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20
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Wu YT, Cai MT, Chang CW, Yen CC, Hsu MC. Bioanalytical Method Development Using Liquid Chromatography with Amperometric Detection for the Pharmacokinetic Evaluation of Forsythiaside in Rats. Molecules 2016; 21:molecules21101384. [PMID: 27754467 PMCID: PMC6274433 DOI: 10.3390/molecules21101384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 10/07/2016] [Accepted: 10/13/2016] [Indexed: 11/16/2022] Open
Abstract
An analytical method entailing high-performance liquid chromatography coupled with electrochemical detection was developed for determining forsythiaside (FTS) in rat plasma. Rat plasma samples were prepared through efficient trichloroacetic acid deproteination. FTS and the internal standard were chromatographically separated on a reversed-phase core-shell silica C18 column (100 mm × 2.1 mm, i.d. 2.6 μm), with a mobile phase consisting of an acetonitrile-0.05-M phosphate solution (11.8:88.2, v/v), at a flow rate of 400 μL/min. The calibration curve, with r² > 0.999, was linear in the 20-1000 ng/mL range. The intra- and interday precision were less than 9.0%, and the accuracy ranged from 94.5% to 106.5% for FTS. The results indicated that the newly developed HPLC-EC method is more sensitive than previous reported methods using UV detection, and this new analytical method is applied successfully for the pharmacokinetic study of FTS. The hydrogel delivery system can efficiently improve bioavailability and mean residual time for FTS, as evidenced by the 2.5- and 6.3-fold increase of the area under the curve and the extension of the half-life, respectively.
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Affiliation(s)
- Yu-Tse Wu
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Meng-Ting Cai
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chih-Wei Chang
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Ching-Chi Yen
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Mei-Chich Hsu
- Department of Sports Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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21
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A novel approach for the simultaneous quantification of 18 small molecule kinase inhibitors in human plasma: A platform for optimised KI dosing. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1033-1034:17-26. [DOI: 10.1016/j.jchromb.2016.07.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 07/01/2016] [Accepted: 07/24/2016] [Indexed: 11/22/2022]
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22
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Satoh M, Ishige T, Ogawa S, Nishimura M, Matsushita K, Higashi T, Nomura F. Development and validation of the simultaneous measurement of four vitamin D metabolites in serum by LC–MS/MS for clinical laboratory applications. Anal Bioanal Chem 2016; 408:7617-7627. [DOI: 10.1007/s00216-016-9821-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 07/06/2016] [Accepted: 07/21/2016] [Indexed: 11/30/2022]
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23
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Carmical J, Brown S. The impact of phospholipids and phospholipid removal on bioanalytical method performance. Biomed Chromatogr 2016; 30:710-20. [DOI: 10.1002/bmc.3686] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/11/2016] [Accepted: 01/13/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Jennifer Carmical
- Bill Gatton College of Pharmacy, East Tennessee State University; Department of Pharmaceutical Sciences; Johnson City TN 37614 USA
| | - Stacy Brown
- Bill Gatton College of Pharmacy, East Tennessee State University; Department of Pharmaceutical Sciences; Johnson City TN 37614 USA
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24
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Ye JH, Pao LH. Using Visualized Matrix Effects to Develop and Improve LC-MS/MS Bioanalytical Methods, Taking TRAM-34 as an Example. PLoS One 2015; 10:e0118818. [PMID: 25909956 PMCID: PMC4409340 DOI: 10.1371/journal.pone.0118818] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 01/06/2015] [Indexed: 01/18/2023] Open
Abstract
Matrix effects (MEs) continue to be an obstacle in the development of the LC-MS/MS method, with phospholipids being the major cause of MEs. Changing the mobile phase has been a common strategy to reduce MEs; however, the underlying mechanism is unclear. "In-source multiple-reaction monitoring" (IS-MRM) for glycerophosphocholines (PCs) has been commonly applied in many bioanalytical methods. "Visualized MEs" is a suitable term to describe the application of IS-MRM to visualize the elution pattern of phospholipids. We selected a real case to discuss the relationship of MEs and phospholipids in different mobile phases by quantitative, qualitative, and visualized MEs in LC-MS/MS bioanalysis. The application of visualized MEs not only predicts the ion-suppression zone but also helps in selecting an appropriate (1) mobile phase, (2) column, (3) needle wash solvent for the residue of analyte and phospholipids, and (4) evaluates the clean-up efficiency of sample preparation. The TRAM-34 LC-MS/MS method, improved by using visualized MEs, was shown to be a precise and accurate analytical method. All data indicated that the use of visualized MEs indeed provided useful information about the LC-MS/MS method development and improvement. In this study, an integrative approach for the qualitative, quantitative, and visualized MEs was used to decipher the complexity of MEs.
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Affiliation(s)
- Jia-Hung Ye
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China
| | - Li-Heng Pao
- School of Pharmacy, National Defense Medical Center, Taipei, Taiwan, Republic of China
- Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology, Kweishan, Taoyuan, Taiwan, Republic of China
- Graduate Institute of Health-Industry Technology, Chang Gung University of Science and Technology, Kweishan, Taoyuan, Taiwan, Republic of China
- * E-mail:
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25
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An Optimized High Throughput Clean-Up Method Using Mixed-Mode SPE Plate for the Analysis of Free Arachidonic Acid in Plasma by LC-MS/MS. Int J Anal Chem 2015; 2015:374819. [PMID: 25873969 PMCID: PMC4383463 DOI: 10.1155/2015/374819] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/02/2014] [Accepted: 12/20/2014] [Indexed: 11/17/2022] Open
Abstract
A high throughput sample preparation method was developed utilizing mixed-mode solid phase extraction (SPE) in 96-well plate format for the determination of free arachidonic acid in plasma by LC-MS/MS. Plasma was mixed with 3% aqueous ammonia and loaded into each well of 96-well plate. After washing with water and methanol sequentially, 3% of formic acid in acetonitrile was used to elute arachidonic acid. The collected fraction was injected onto a reversed phase column at 30°C with mobile phase of acetonitrile/water (70 : 30, v/v) and detected by LC-MS/MS coupled with electrospray ionization (ESI) in multiple reaction monitoring (MRM) mode. The calibration curve ranged from 10 to 2500 ng/mL with sufficient linearity (r (2) = 0.9999). The recoveries were in the range of 99.38% to 103.21% with RSD less than 6%. The limit of detection is 3 ng/mL.
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26
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Hayama T. [Highly selective analysis of biogenic-related compounds utilizing fluorous chemistry]. YAKUGAKU ZASSHI 2015; 135:205-12. [PMID: 25747214 DOI: 10.1248/yakushi.14-00213-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Perfluoroalkyl-containing compounds are highly fluorous, meaning that they have a remarkable affinity for one another and effectively exclude non-fluorous species. Utilizing this unique property, we have developed a fluorous derivatization with a liquid chromatographic analysis method for highly selective analysis of target analytes. Although most previous methods focused on extremely sensitive detection-oriented derivatization, the fluorous derivatization method involves highly specific separation for analytes. This method includes perfluoroalkylation of analytes with a fluorous reagent, and separation of the derivatives using a perfluoroalkyl-modified stationary phase LC column. The derivatives can be selectively retained on the fluorous-phase LC column, whereas the non-fluorous derivatives are poorly retained under the same separation conditions. The combination of this method with LC-tandem mass spectrometry (MS/MS) is very useful for complex biological sample analysis, because matrix-induced suppression effects, which are a common problem in LC-MS/MS analysis arising from components of a biological endogenous matrix, have not been observed. We have successfully applied this method to precise and accurate LC-MS/MS analysis of some biogenic compounds, such as sialic acids and biogenic amines, in complex biological samples.
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27
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Wang Y, Armando AM, Quehenberger O, Yan C, Dennis EA. Comprehensive ultra-performance liquid chromatographic separation and mass spectrometric analysis of eicosanoid metabolites in human samples. J Chromatogr A 2014; 1359:60-9. [PMID: 25074422 PMCID: PMC4592635 DOI: 10.1016/j.chroma.2014.07.006] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 06/25/2014] [Accepted: 07/06/2014] [Indexed: 11/19/2022]
Abstract
Over the past decade, the number of known eicosanoids has expanded immensely and we have now developed an ultra-performance liquid chromatography-electrospray ionization triple quadrupole mass spectrometric (UPLC-QTRAP/MS/MS) method to monitor and quantify numerous eicosanoids. The UPLC-QTRAP/MS/MS approach utilizes scheduled multiple reaction monitoring (MRM) to optimize sensitivity, number of metabolites that can be analyzed and the time requirement of the analysis. A total of 184 eicosanoids including 26 deuterated internal standards can be separated and monitored in a single 5min UPLC run. To demonstrate a practical application, human plasma samples were analyzed following solid-phase extraction (SPE) and the recovery rate and matrix effects were determined for the 26 deuterated internal standards added to the plasma. The method was validated and shown to be sensitive with the limit of quantitation at pg levels for most compounds, accurate with recovery rates of 70-120%, and precise with a CV<30 for all compounds. Also, the method showed a linear response over a range spanning several orders of magnitude. In a QC human plasma sample, we identified and rigorously quantified over 120 eicosanoids.
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Affiliation(s)
- Yan Wang
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093-0601, USA
| | - Aaron M Armando
- Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093-0601, USA
| | - Oswald Quehenberger
- Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093-0601, USA; Department of Medicine, University of California at San Diego, La Jolla, CA 92093-0601, USA
| | - Chao Yan
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Edward A Dennis
- Department of Pharmacology, University of California at San Diego, La Jolla, CA 92093-0601, USA; Department of Chemistry and Biochemistry, University of California at San Diego, La Jolla, CA 92093-0601, USA.
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28
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Wu YT, Wu MT, Lin CC, Chien CF, Tsai TH. Pharmacokinetic Studies of Chinese Medicinal Herbs Using an Automated Blood Sampling System and Liquid Chromatography-mass Spectrometry. J Tradit Complement Med 2014; 2:33-40. [PMID: 24716112 PMCID: PMC3943008 DOI: 10.1016/s2225-4110(16)30068-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The safety of herbal products is one of the major concerns for the modernization of traditional Chinese medicine, and pharmacokinetic data of medicinal herbs guide us to design the rational use of the herbal formula. This article reviews the advantages of the automated blood sampling (ABS) systems for pharmacokinetic studies. In addition, three commonly used sample preparative methods, protein precipitation, liquid-liquid extraction and solid-phase extraction, are introduced. Furthermore, the definition, causes and evaluation of matrix effects in liquid chromatography-mass spectrometry (LC/MS) analysis are demonstrated. Finally, we present our previous works as practical examples of the application of ABS systems and LC/MS for the pharmacokinetic studies of Chinese medicinal herbs.
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Affiliation(s)
- Yu-Tse Wu
- Institute of Traditional Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan ; Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
| | - Ming-Tsang Wu
- Institute of Traditional Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chia-Chun Lin
- Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chao-Feng Chien
- Institute of Traditional Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Tung-Hu Tsai
- Institute of Traditional Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan ; Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
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29
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Wang J, Sibrian-Vazquez M, Escobedo JO, Lowry M, Wang L, Chu YH, Moore RG, Strongin RM. Simple enrichment and analysis of plasma lysophosphatidic acids. Analyst 2013; 138:6852-9. [PMID: 24067566 PMCID: PMC3929374 DOI: 10.1039/c3an01168b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A simple and highly efficient technique for the analysis of lysophosphatidic acid (LPA) subspecies in human plasma is described. The streamlined sample preparation protocol furnishes the five major LPA subspecies with excellent recoveries. Extensive analysis of the enriched sample reveals only trace levels of other phospholipids. This level of purity not only improves MS analyses, but enables HPLC post-column detection in the visible region with a commercially available fluorescent phospholipids probe. Human plasma samples from different donors were analyzed using the above method and validated by LC-ESI/MS/MS.
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Affiliation(s)
- Jialu Wang
- Department of Chemistry, Portland State University, Portland, OR 97201, USA.; Fax: +1 503-725-9525; Tel: +1 503-725-9724
| | - Martha Sibrian-Vazquez
- Department of Chemistry, Portland State University, Portland, OR 97201, USA.; Fax: +1 503-725-9525; Tel: +1 503-725-9724
| | - Jorge O. Escobedo
- Department of Chemistry, Portland State University, Portland, OR 97201, USA.; Fax: +1 503-725-9525; Tel: +1 503-725-9724
| | - Mark Lowry
- Department of Chemistry, Portland State University, Portland, OR 97201, USA.; Fax: +1 503-725-9525; Tel: +1 503-725-9724
| | - Lei Wang
- Department of Chemistry, Portland State University, Portland, OR 97201, USA.; Fax: +1 503-725-9525; Tel: +1 503-725-9724
| | - Yu-Hsuan Chu
- Department of Chemistry, Portland State University, Portland, OR 97201, USA.; Fax: +1 503-725-9525; Tel: +1 503-725-9724
| | - Richard G. Moore
- Women and Infants Hospital, Brown University, 101 Dudley Street, Providence, RI 02905, USA.; Tel: +1 401-453-7520
| | - Robert M. Strongin
- Department of Chemistry, Portland State University, Portland, OR 97201, USA.; Fax: +1 503-725-9525; Tel: +1 503-725-9724
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Son HH, Moon JY, Seo HS, Kim HH, Chung BC, Choi MH. High-temperature GC-MS-based serum cholesterol signatures may reveal sex differences in vasospastic angina. J Lipid Res 2013; 55:155-62. [PMID: 24220886 PMCID: PMC3927468 DOI: 10.1194/jlr.d040790] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Alterations of cholesterol metabolism are responsible for vasospastic angina and atherosclerosis. To comprehensively evaluate cholesterol metabolism, 18 sterols, including cholesterol, 6 cholesteryl esters (CEs), 3 cholesterol precursors, and 8 hydroxycholesterols (OHCs), were simultaneously analyzed using hybrid solid-phase extraction (SPE) purification coupled to high-temperature gas chromatography-mass spectrometry (HTGC-MS). Methanol-based hybrid SPE increased the selective extraction, and HTGC resulted in a good chromatographic resolution for the separation of lipophilic compounds. The limits of quantification of cholesterol and CEs ranged from 0.2 to 10.0 μg/ml, while OHCs and cholesterol precursors ranged from 0.01 to 0.10 μg/ml. Linearity as the correlation coefficient was higher than 0.99 with the exception of cholesteryl laurate, myristate, oleate, and linoleate (r² > 0.98). The precision (% coefficient of variation) and accuracy (% bias) ranged from 1.1 to 9.8% and from 75.9 to 125.1%, respectively. The overall recoveries of CEs ranged from 26.1 to 64.0%, and the recoveries of other sterols ranged from 83.8 to 129.3%. The cholesterol signatures showed sex differences in patients with vasospastic angina and may associate with 24-reductases. This technique can be useful for making clinical diagnoses and for an increased understanding of the pathophysiology of vasospastic angina.
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Affiliation(s)
- Hyun-Hwa Son
- Future Convergence Research Division, Korea Institute of Science and Technology, Seoul 136-791, Korea
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31
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Battista N, Sergi M, Montesano C, Napoletano S, Compagnone D, Maccarrone M. Analytical approaches for the determination of phytocannabinoids and endocannabinoids in human matrices. Drug Test Anal 2013; 6:7-16. [DOI: 10.1002/dta.1574] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 09/05/2013] [Accepted: 09/27/2013] [Indexed: 12/30/2022]
Affiliation(s)
- Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Teramo Italy
- European Center for Brain Research/Santa Lucia Foundation; Rome Italy
| | - Manuel Sergi
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Teramo Italy
| | | | - Sabino Napoletano
- Department of Chemistry; Sapienza University of Rome; Rome Italy
- Department of Public Safety, Ministry of Interior; Forensic Service/GIPS; Ancona Italy
| | - Dario Compagnone
- Faculty of Bioscience and Technology for Food, Agriculture and Environment; University of Teramo; Teramo Italy
| | - Mauro Maccarrone
- European Center for Brain Research/Santa Lucia Foundation; Rome Italy
- Center of Integrated Research; Campus Bio-Medico University of Rome; Rome Italy
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32
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Hybrid stationary phases: the answer to all of your matrix effect problems? Bioanalysis 2013; 5:2735-7. [DOI: 10.4155/bio.13.253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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33
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Ismaiel OA, Jenkins RG. Development and optimization of on-line 2-dimensional chromatographic approaches for eliminating matrix effects and improving bioanalysis of peptides in human plasma using UHPLC-MS/MS. Drug Test Anal 2013; 6:415-25. [DOI: 10.1002/dta.1521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 07/05/2013] [Accepted: 07/08/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Omnia A. Ismaiel
- Zagazig University; Faculty of Pharmacy, Department of Analytical Chemistry; Egypt
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34
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Comparison of sample preparation approaches for bioanalytical workflows and their affect on productivity. Bioanalysis 2013; 5:1729-33. [DOI: 10.4155/bio.13.153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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35
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O’Mahony J, Clarke L, Whelan M, O’Kennedy R, Lehotay SJ, Danaher M. The use of ultra-high pressure liquid chromatography with tandem mass spectrometric detection in the analysis of agrochemical residues and mycotoxins in food – Challenges and applications. J Chromatogr A 2013; 1292:83-95. [DOI: 10.1016/j.chroma.2013.01.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 12/19/2012] [Accepted: 01/04/2013] [Indexed: 11/16/2022]
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36
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Furey A, Moriarty M, Bane V, Kinsella B, Lehane M. Ion suppression; a critical review on causes, evaluation, prevention and applications. Talanta 2013; 115:104-22. [PMID: 24054567 DOI: 10.1016/j.talanta.2013.03.048] [Citation(s) in RCA: 302] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 03/17/2013] [Accepted: 03/20/2013] [Indexed: 11/30/2022]
Abstract
The consequences of matrix effects in mass spectrometry analysis are a major issue of concern to analytical chemists. The identification of any ion suppressing (or enhancing) agents caused by sample matrix, solvent or LC-MS system components should be quantified and measures should be taken to eliminate or reduce the problem. Taking account of ion suppression should form part of the optimisation and validation of any quantitative LC-MS method. For example the US Food and Drug Administration has included the evaluation of matrix effects in its "Guidance for Industry on Bioanalytical Method Validation" (F.D.A. Department of Health and Human Services, Guidance for industry on bioanalytical method validation, Fed. Regist. 66 (100) 2001). If ion suppression is not assessed and corrected in an analytical method, the sensitivity of the LC-MS method can be seriously undermined, and it is possible that the target analyte may be undetected even when using very sensitive instrumentation. Sample analysis may be further complicated in cases where there are large sample-to-sample matrix variations (e.g. blood samples from different people can sometimes vary in certain matrix components, shellfish tissue samples sourced from different regions where different phytoplankton food sources are present, etc) and therefore exhibit varying ion-suppression effects. Although it is widely agreed that there is no generic method to overcome ion suppression, the purpose of this review is to: provide an overview of how ion suppression occurs, outline the methodologies used to assess and quantify the impact of ion suppression, discuss the various corrective actions that have been used to eliminate ion suppression in sample analysis, that is to say the deployment of techniques that eliminate or reduce the components in the sample matrix that cause ion suppression. This review article aims to collect together the latest information on the causes of ion suppression in LC-MS analysis and to consider the efficacy of common approaches to eliminate or reduce the problem using relevant examples published in the literature.
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Affiliation(s)
- Ambrose Furey
- Mass Spectrometry Research Centre (MSRC), Department of Chemistry, Cork Institute of Technology, Cork, Ireland; Team Elucidate/Mass Spectrometry Centre for Proteomic and Biotoxin Research (PROTEOBIO), Department of Chemistry, Cork Institute of Technology, Cork, Ireland.
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37
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Method development and validation for rat serum fingerprinting with CE-MS: application to ventilator-induced-lung-injury study. Anal Bioanal Chem 2013; 405:4849-58. [PMID: 23535741 DOI: 10.1007/s00216-013-6882-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Revised: 02/13/2013] [Accepted: 02/27/2013] [Indexed: 02/06/2023]
Abstract
In the search for a noninvasive and reliable rapid screening method to detect biomarkers, a metabolomics fingerprinting approach was developed and applied to rat serum samples using capillary electrophoresis coupled to an electrospray ionization-time of flight-mass spectrometer (CE-TOF-MS). An ultrafiltration method was used for sample pretreatment. To evaluate performance the method was validated with carnitine, choline, ornithine, alanine, acetylcarnitine, betaine, and citrulline, covering the entire electropherogram of pool of rat serum. The linearity for all metabolites was >0.99, with good recovery and precision. Approximately 34 compounds were also confirmed in the pool of rat serum. The method was successfully applied to real serum samples from rats with ventilator-induced lung injury, an experimental rat model for acute lung injury (ALI), giving a total of 1163 molecular features. By use of univariate and multivariate statistics 18 significant compounds were found, of which five were confirmed. The involvement of arginase and nitric oxide synthase has been proved for other lung diseases, meaning the increase of asymmetric dimethyl arginine (ADMA) and ornithine and the decrease of arginine found were in accordance with published literature. Ultimately this fingerprinting approach offers the possibility of identifying biomarkers that could be regularly screened for as part of routine disease control. In this way it might be possible to prevent the development of ALI in patients in critical care units.
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38
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Ahmad S, Kalra H, Gupta A, Raut B, Hussain A, Rahman MA. HybridSPE: A novel technique to reduce phospholipid-based matrix effect in LC-ESI-MS Bioanalysis. J Pharm Bioallied Sci 2012; 4:267-75. [PMID: 23248558 PMCID: PMC3523520 DOI: 10.4103/0975-7406.103234] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 12/19/2011] [Accepted: 01/05/2012] [Indexed: 11/09/2022] Open
Abstract
When complex biological materials are analyzed without an adequate sample preparation technique, MS signal and response undergo significant alteration and result in poor quantification and assay. This problem generally takes place due to the presence of several endogenous materials component in samples. One of the major causes of ion suppression in bioanalysis is the presence of phospholipids during LC-MS analysis. The phospholipid-based matrix effect was investigated with a commercially available electro spray ionization (ESI) source coupled with a triple quadrupole mass spectrometer. HybridSPE dramatically reduced the levels of residual phospholipids in biological samples, leading to significant reduction in matrix effects. This new procedure that combines the simplicity of precipitation with the selectivity of SPE allows obtaining much cleaner extracts than with conventional procedures. HybridSPE-precipitation procedure provides significant improvement in bioanalysis and a practical and fast way to ensure the avoidance of phospholipids-based matrix effects. The present review outlines the HybridSPE technique to minimize phospholipids-based matrix effects on LC–ESI-MS bioanalysis.
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Affiliation(s)
- Shafeeque Ahmad
- School of Pharmacy and Technology Management, NMIMS University, Mumbai, India
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39
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Ismaiel OA, Jenkins RG, Thomas Karnes H. Investigation of endogenous blood lipids components that contribute to matrix effects in dried blood spot samples by liquid chromatography-tandem mass spectrometry. Drug Test Anal 2012; 5:710-5. [DOI: 10.1002/dta.1421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 08/31/2012] [Accepted: 08/31/2012] [Indexed: 01/15/2023]
Affiliation(s)
- Omnia A. Ismaiel
- Zagazig University Faculty of Pharmacy; Department of Analytical Chemistry; Egypt
| | | | - H. Thomas Karnes
- Virginia Commonwealth University, School of Pharmacy; Department of Pharmaceutics; USA
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40
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The Application and Validation of HybridSPE-Precipitation Cartridge Technology for the Rapid Clean-up of Serum Matrices (from Phospholipids) for the Clinical Analysis of Serotonin, Dopamine and Melatonin. Chromatographia 2012. [DOI: 10.1007/s10337-012-2330-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Hayama T, Sakaguchi Y, Yoshida H, Itoyama M, Todoroki K, Yamaguchi M, Nohta H. Binary Fluorous Alkylation of Biogenic Primary Amines with Perfluorinated Aldehyde Followed by Fluorous Liquid Chromatography–Tandem Mass Spectrometry Analysis. Anal Chem 2012; 84:8407-14. [DOI: 10.1021/ac3020092] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tadashi Hayama
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka
814-0180, Japan
| | - Yohei Sakaguchi
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka
814-0180, Japan
| | - Hideyuki Yoshida
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka
814-0180, Japan
| | - Miki Itoyama
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka
814-0180, Japan
| | - Kenichiro Todoroki
- Laboratory
of Analytical and
Bio-Analytical Chemistry, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga, Shizuoka
422-8526, Japan
| | - Masatoshi Yamaguchi
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka
814-0180, Japan
| | - Hitoshi Nohta
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Johnan, Fukuoka
814-0180, Japan
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42
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Prely LM, Paal K, Hermans J, van der Heide S, van Oosterhout AJ, Bischoff R. Quantification of matrix metalloprotease-9 in bronchoalveolar lavage fluid by selected reaction monitoring with microfluidics nano-liquid-chromatography–mass spectrometry. J Chromatogr A 2012; 1246:103-10. [DOI: 10.1016/j.chroma.2012.02.076] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Revised: 01/15/2012] [Accepted: 02/20/2012] [Indexed: 12/25/2022]
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43
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Analytical bias between species caused by matrix effects in quantitative analysis of a small-molecule pharmaceutical candidate in plasma. Bioanalysis 2012; 4:675-84. [DOI: 10.4155/bio.12.11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: Suppression or enhancement of MS ionization, particularly evident when electrospray is used as the source of ions, has been widely discussed. Methods: An assay for a small-molecule pharmaceutical in dog plasma between 1–300 ng/ml was validated with a mean bias across the calibration range of 5.0%. When the calibration sample matrix was substituted for human plasma, the mean bias across the range increased to 29.1%. A study of bias originating as a result of matrix effects, arising from endogenous glycerophosphocholine species, in plasma sources is discussed. Conclusion: A simple strategy to assess the potential of any unmitigated matrix effect to bias quantitative analysis by nonequivalent ionization induction or suppression is evaluated.
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44
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The most convenient and general approach for plasma sample clean-up: multifunction adsorption and supported liquid extraction. Bioanalysis 2012; 4:223-5. [DOI: 10.4155/bio.11.332] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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45
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Stahnke H, Kittlaus S, Kempe G, Alder L. Reduction of Matrix Effects in Liquid Chromatography–Electrospray Ionization–Mass Spectrometry by Dilution of the Sample Extracts: How Much Dilution is Needed? Anal Chem 2012; 84:1474-82. [DOI: 10.1021/ac202661j] [Citation(s) in RCA: 248] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Helen Stahnke
- Federal Institute for Risk Assessment, Max-Dohrn-Straße 8-10, 10589
Berlin, Germany
| | - Stefan Kittlaus
- Joint Analytical Systems GmbH, Carl-Zeiss-Straße 49, 47445 Moers,
Germany
| | - Günther Kempe
- Landesuntersuchungsanstalt für das Gesundheits- und Veterinärwesen Sachsen, Reichenbachstraße 71-73, 01217 Dresden, Germany
| | - Lutz Alder
- Federal Institute for Risk Assessment, Max-Dohrn-Straße 8-10, 10589
Berlin, Germany
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46
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Llewellyn N, Lloyd P, Jürgens M, Johnson A. Determination of cyclophosphamide and ifosfamide in sewage effluent by stable isotope-dilution liquid chromatography–tandem mass spectrometry. J Chromatogr A 2011; 1218:8519-28. [DOI: 10.1016/j.chroma.2011.09.061] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 09/20/2011] [Accepted: 09/22/2011] [Indexed: 10/17/2022]
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47
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Kittlaus S, Schimanke J, Kempe G, Speer K. Assessment of sample cleanup and matrix effects in the pesticide residue analysis of foods using postcolumn infusion in liquid chromatography–tandem mass spectrometry. J Chromatogr A 2011; 1218:8399-410. [DOI: 10.1016/j.chroma.2011.09.054] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 09/19/2011] [Accepted: 09/20/2011] [Indexed: 11/29/2022]
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48
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Zoerner AA, Batkai S, Suchy MT, Gutzki FM, Engeli S, Jordan J, Tsikas D. Simultaneous UPLC-MS/MS quantification of the endocannabinoids 2-arachidonoyl glycerol (2AG), 1-arachidonoyl glycerol (1AG), and anandamide in human plasma: minimization of matrix-effects, 2AG/1AG isomerization and degradation by toluene solvent extraction. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 883-884:161-71. [PMID: 21752730 DOI: 10.1016/j.jchromb.2011.06.025] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 05/16/2011] [Accepted: 06/15/2011] [Indexed: 10/18/2022]
Abstract
Analysis of the endocannabinoid (EC) system's key molecules 2-arachidonoyl glycerol (2AG) and arachidonoyl ethanolamide (anandamide, AEA) is challenging due to several peculiarities. 2AG isomerizes spontaneously to its biologically inactive analogue 1-arachidonoyl glycerol (1AG) by acyl migration and it is only chromatographically distinguishable from 1AG. Matrix-effects caused primarily by co-extracted phospholipids may further compromise analysis. In addition, 2AG and 1AG are unstable under certain conditions like solvent evaporation or reconstitution of dried extracts. We examined effects of different organic solvents and their mixtures, such as toluene, ethyl acetate, and chloroform-methanol, on 2AG/1AG isomerisation, 2AG/1AG stability, and matrix-effects in the UPLC-MS/MS analysis of 2AG and AEA in human plasma. Toluene prevented, both, 2AG isomerisation to 1AG and degradation of 2AG/1AG during evaporation. Toluene extracts contain only 2% of matrix-effect-causing plasma phospholipids compared to extracts from the traditionally used solvent mixture chloroform-methanol. Toluene and all other tested organic solvents provide comparable 2AG and AEA extraction yields (60-80%). Based on these favourable toluene properties, we developed and validated a UPLC-MS/MS method with positive electrospray ionization (ESI+) that allows for simultaneous accurate and precise measurement of 2AG and AEA in human plasma. The UPLC-MS/MS method was cross-validated with a previously described fully-validated GC-MS/MS method for AEA in human plasma. A close correlation (r(2)=0.821) was observed between the results obtained from UPLC-MS/MS (y) and GC-MS/MS (x) methods (y=0.01+0.85x). The UPLC-MS/MS method is suitable for routine measurement of 2AG and AEA in human plasma samples (1 mL) in clinical settings as shown by quality control plasma samples processed over a period of 100 days. The UPLC-MS/MS method was further extended to human urine. In urine, AEA was not detectable and 2AG was detected in only 3 out of 19 samples from healthy subjects at 160, 180 and 212 pM corresponding to 12.3, 14.5 and 9.9 pmol/mmol creatinine, respectively.
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Affiliation(s)
- Alexander A Zoerner
- Institute of Clinical Pharmacology, Hannover Medical School, Hannover, Germany.
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49
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Ismaiel OA, Zhang T, Jenkins R, Karnes HT. Determination of octreotide and assessment of matrix effects in human plasma using ultra high performance liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:2081-8. [PMID: 21700513 DOI: 10.1016/j.jchromb.2011.05.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 05/11/2011] [Accepted: 05/24/2011] [Indexed: 10/18/2022]
Abstract
A selective UHPLC-MS/MS method for determination of the therapeutic peptide octreotide in human plasma was developed and validated. This assay used a UHPLC C(18) column with 1.7 μm particle size for efficient separation and an ion-exchange SPE for selective extraction. Octreotide and its labeled internal standard, [(13)C(6)Phe(3)] octreotide, were extracted from human plasma using a simple Oasis® WCX μElution SPE method and analyzed with a total chromatographic run time of 7.5 min. Matrix effects were studied during method development by direct monitoring of representative phospholipids. On-line removal of phospholipids using column switching and pre-column back-flushing was carried out to trap and remove any residual phospholipid matrix interferences. The UHPLC column provided baseline separation between the analyte and matrix peaks. The chromatographic conditions yielded optimal retention and excellent peak shape for both the analyte and internal standard. The assay was linear in the concentration range of 0.025-25.0 ng/ml, inter- and intra-assay precision and accuracy were within 6.1% and ±1.93%, respectively. Recovery was ∼73%. Post-extraction addition experiments showed that matrix effects were less than 4%. This method for octreotide in human plasma has been validated and utilized to support of clinical pharmacokinetic studies.
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Affiliation(s)
- Omnia A Ismaiel
- Zagazig University, Faculty of Pharmacy, Department of Analytical Chemistry, Egypt
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50
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Quantification of Alefacept, an immunosuppressive fusion protein in human plasma using a protein analogue internal standard, trypsin cleaved signature peptides and liquid chromatography tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:789-98. [DOI: 10.1016/j.jchromb.2011.02.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Revised: 02/16/2011] [Accepted: 02/20/2011] [Indexed: 11/24/2022]
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