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Karthick K, Abinaya M, Shankar T, Swarnalatha K. In Vitro and In Silico Screening of Benzimidazole-Based Ruthenium(II) Complexes as Potent ALK Inhibitor for Cancer Prevention. Appl Biochem Biotechnol 2023; 195:7397-7413. [PMID: 37000352 DOI: 10.1007/s12010-023-04435-8] [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] [Accepted: 03/15/2023] [Indexed: 04/01/2023]
Abstract
Two new heteroleptic Ru(II) polypyridyl complexes, [Ru(bpy)2(B)]Cl2 (RBB) (bpy = 2,2'-bipyridine and B = 4,4'-bis(benzimidazolyl)-2,2'-bipyridine) and [Ru(phen)2(B)]Cl2 (RPB), were synthesized, and the structural features were confirmed by the analytical and spectral tools such as FT-IR, 1H-NMR, and UV-Visible spectroscopy. We have explored the possibility of improving the selectivity of cytotoxic Ru(II) complex and their preliminary biological evaluation against MCF-7 and MG-63 cell lines and clinical pathogens. The results of the antimicrobial screening show that the ligand and complexes have a range of abilities against the species of bacteria and fungi that were tested. The anti-inflammatory activity of the compounds was found to be in the range of 30-75%. Molecular docking study was performed for these ligand and complexes to evaluate and analyze the anti-lymphoma cancer activity. Molecular docking score and the rank revealed the bonding affinity towards the site of interaction of the oncoprotein anaplastic lymphoma kinase (ALK).
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Affiliation(s)
- Kamaraj Karthick
- Photochemistry Research Laboratory, Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, 627012, Tamil Nadu, India
| | - Muthukumar Abinaya
- Photochemistry Research Laboratory, Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, 627012, Tamil Nadu, India
| | - Thangaraj Shankar
- Photochemistry Research Laboratory, Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, 627012, Tamil Nadu, India
| | - Kalaiyar Swarnalatha
- Photochemistry Research Laboratory, Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli, 627012, Tamil Nadu, India.
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Polycaprolactone Composite Micro/Nanofibrous Material as an Alternative to Restricted Access Media for Direct Extraction and Separation of Non-Steroidal Anti-Inflammatory Drugs from Human Serum Using Column-Switching Chromatography. NANOMATERIALS 2021; 11:nano11102669. [PMID: 34685117 PMCID: PMC8540724 DOI: 10.3390/nano11102669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 12/17/2022]
Abstract
Application of the poly-ɛ-caprolactone composite sorbent consisting of the micro- and nanometer fibers for the on-line extraction of non-steroidal anti-inflammatory drugs from a biological matrix has been introduced. A 100 μL human serum sample spiked with ketoprofen, naproxen, sodium diclofenac, and indomethacin was directly injected in the extraction cartridge filled with the poly-ɛ-caprolactone composite sorbent. This cartridge was coupled with a chromatographic instrument via a six-port switching valve allowing the analyte extraction and separation within a single analytical run. The 1.5 min long extraction step isolated the analytes from the proteinaceous matrix was followed by their 13 min HPLC separation using Ascentis Express RP-Amide (100 × 4.6 mm, 5 µm) column. The recovery of all analytes from human serum tested at three concentration levels ranged from 70.1% to 118.7%. The matrix calibrations were carried out in the range 50 to 20,000 ng mL−1 with correlation coefficients exceeding 0.996. The detection limit was 15 ng mL−1, and the limit of quantification corresponded to 50 ng mL−1. The developed method was validated and successfully applied for the sodium diclofenac determination in real patient serum. Our study confirmed the ability of the poly-ɛ-caprolactone composite sorbent to remove the proteins from the biological matrix, thus serving as an alternative to the application of restricted-access media.
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Preparation and application of a restricted access material with hybrid poly(glycerol mono-methacrylate) and cross-linked bovine serum albumin as hydrophilic out layers for directly on-line high performance liquid chromatography analysis of enrofloxacin and gatifloxacin in milk samples. J Chromatogr A 2018; 1573:59-65. [DOI: 10.1016/j.chroma.2018.08.067] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/24/2018] [Accepted: 08/31/2018] [Indexed: 11/23/2022]
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4
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Kalu Appulage D, Wang EH, Figard BJ, Schug KA. An integrated multipath liquid chromatography-mass spectrometry system for the simultaneous preparation, separation, and detection of proteins and small molecules. J Sep Sci 2018; 41:2702-2709. [PMID: 29676850 DOI: 10.1002/jssc.201800298] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/10/2018] [Accepted: 04/11/2018] [Indexed: 11/08/2022]
Abstract
A multipath liquid chromatography with mass spectrometry instrument was constructed with the help of restricted access media to online segregate small and large molecules. This liquid chromatography system was custom built with five pumps and three two-position six-port valves to control the flow in a multipath system for the simultaneous analysis of small molecules and proteins. On separate chromatographic channels, small molecules trapped and proteins excluded from the online restricted access media were analyzed downstream using high-efficiency columns and a triple quadrupole mass spectrometer. A model sample, which included five proteins and 22 small molecules with different physicochemical properties, was used to evaluate the system. Following injection, the complete multipath separation and detection was performed in 22 min. Protein exclusion by the restricted access media was not quantitative. Four commercial trap columns were evaluated for their exclusion efficiency toward the proteins. Exclusion efficiency varied from <50% to only a maximum of 75% exclusion across the trap columns tested. An attempt was made to optimize the exclusion efficiency using different flow rates, flow rate gradients, and different additives both in the sample and the mobile phases. Protein exclusion was still erratic and generally nonquantitative.
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Affiliation(s)
- Dananjaya Kalu Appulage
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
| | - Evelyn H Wang
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
| | | | - Kevin A Schug
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
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Medvedovici A, Bacalum E, David V. Sample preparation for large-scale bioanalytical studies based on liquid chromatographic techniques. Biomed Chromatogr 2017; 32. [DOI: 10.1002/bmc.4137] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/24/2017] [Accepted: 10/27/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Andrei Medvedovici
- Faculty of Chemistry, Department of Analytical Chemistry; University of Bucharest; Bucharest Romania
| | - Elena Bacalum
- Research Institute; University of Bucharest; Bucharest Romania
| | - Victor David
- Faculty of Chemistry, Department of Analytical Chemistry; University of Bucharest; Bucharest Romania
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Lubin A, Sheng S, Cabooter D, Augustijns P, Cuyckens F. Flexible nano- and microliter injections on a single liquid chromatography-mass spectrometry system: Minimizing sample preparation and maximizing linear dynamic range. J Chromatogr A 2017; 1524:101-107. [PMID: 28989028 DOI: 10.1016/j.chroma.2017.09.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 09/22/2017] [Accepted: 09/22/2017] [Indexed: 11/26/2022]
Abstract
Lack of knowledge on the expected concentration range or insufficient linear dynamic range of the analytical method applied are common challenges for the analytical scientist. Samples that are above the upper limit of quantification are typically diluted and reanalyzed. The analysis of undiluted highly concentrated samples can cause contamination of the system, while the dilution step is time consuming and as the case for any sample preparation step, also potentially leads to precipitation, adsorption or degradation of the analytes.
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Affiliation(s)
- Arnaud Lubin
- Discovery Sciences, Janssen Research and Development, Turnhoutseweg 30, B-2340 Beerse, Belgium.
| | - Sheng Sheng
- Faculté des Sciences d'Orsay, Paris Sud University, 15 rue Georges Clemenceau, 91405 Orsay, France.
| | - Deirdre Cabooter
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, O&N II Herestraat 49, 3001 Leuven, Belgium.
| | - Patrick Augustijns
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, O&N II Herestraat 49, 3001 Leuven, Belgium.
| | - Filip Cuyckens
- Discovery Sciences, Janssen Research and Development, Turnhoutseweg 30, B-2340 Beerse, Belgium.
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Column switching UHPLC–MS/MS with restricted access material for the determination of CNS drugs in plasma samples. Bioanalysis 2017; 9:555-568. [DOI: 10.4155/bio-2016-0301] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background: Polypharmacy is a common practice in schizophrenia. Consequently, therapeutic drug monitoring is usually adopted to maintain the concentrations of the drugs in the plasma within a targeted therapeutic range, to maximize therapeutic efficiency and to diminish adverse side effects. Methodology: This study reports on a column switching UHPLC–MS/MS method to determine psychotropic drugs in plasma samples simultaneously. Results: The method was linear from 0.025 to 1.25 ng ml-1 with R2 above 0.9950 and the lack of fit test (p > 0.05). The precision values presented coefficients of variation lower than 12%, and the relative standard error of the accuracy were lower than 14%. Conclusion: The column switching UHPLC–MS/MS method developed herein successfully determined drugs in schizophrenic patients’ plasma samples for therapeutic drug monitoring.
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Lin S, Zhang Y, Huang W, Dong X. Preparation of a monolithic cation-exchange material with hydrophilic external layers by two-step reversible addition-fragmentation chain transfer polymerization. J Sep Sci 2017; 40:1694-1702. [PMID: 28217862 DOI: 10.1002/jssc.201601372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 02/08/2017] [Accepted: 02/08/2017] [Indexed: 11/07/2022]
Abstract
In recent years, the efficient analysis of biological samples has become more important due to the advances of life science and pharmaceutical research and practice. Because biological sample pretreatment is the bottleneck for fast process, material development for efficient sample process in the high-performance liquid chromatography analysis is highly desirable. In this research, a cation-exchange restricted access monolithic column was synthesized by a reversible addition-fragmentation chain transfer polymerization method. Utilizing the controlled/living property of the reversible addition-fragmentation chain transfer method, a monolithic column of cross-linked poly(sulfopropyl methacrylate) was prepared first and then linear poly(glycerol mono-methacrylate) was immobilized covalently on the surface of the polymer. The monolithic material has both functionalities of cation-exchange and protein exclusion. Protein recovery of 94.6% was obtained after grafting of poly(glycerol mono-methacrylate) while the cation-exchange property of the column is still retained. In the study, the relation between the synthetic conditions and properties of the materials was studied. The synthesis conditions including the porogen, monomer concentration, and ratio of monomers/initiator/reversible addition-fragmentation chain transfer agent were optimized. The study provided a method for the preparation of restricted access monolithic columns: a bifunctional material by reversible addition-fragmentation chain transfer polymerization method.
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Affiliation(s)
- Shen Lin
- Research Centre for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, China
| | - Yingying Zhang
- Research Centre for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, China
| | - Wei Huang
- Research Centre for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, China
| | - Xiangchao Dong
- Research Centre for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, China
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New materials for sample preparation techniques in bioanalysis. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1043:81-95. [DOI: 10.1016/j.jchromb.2016.10.041] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 10/20/2016] [Accepted: 10/29/2016] [Indexed: 11/23/2022]
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11
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Baghdady YZ, Schug KA. Evaluation of efficiency and trapping capacity of restricted access media trap columns for the online trapping of small molecules. J Sep Sci 2016; 39:4183-4191. [DOI: 10.1002/jssc.201600777] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 08/20/2016] [Accepted: 08/20/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Yehia Z. Baghdady
- Department of Chemistry & Biochemistry; The University of Texas at Arlington; Arlington TX USA
| | - Kevin A. Schug
- Department of Chemistry & Biochemistry; The University of Texas at Arlington; Arlington TX USA
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Bioanalytical challenge: A review of environmental and pharmaceuticals contaminants in human milk. J Pharm Biomed Anal 2016; 130:318-325. [PMID: 27372148 DOI: 10.1016/j.jpba.2016.06.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 06/08/2016] [Indexed: 12/31/2022]
Abstract
An overview of bioanalytical methods for the determination of environmental and pharmaceutical contaminants in human milk is presented. The exposure of children to these contaminants through lactation has been widely investigated. The human milk contains diverse proteins, lipids, and carbohydrates and the concentration of these components is drastically altered during the lactation period providing a high degree of an analytical challenge. Sample collection and pretreatment are still considered the Achilles' heel. This review presents liquid chromatographic methods developed in the last 10 years for this complex matrix with focuses in the extraction and quantification steps. Green sample preparation protocols have been emphasized.
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Simultaneous determination of fluoroquinolones in environmental water by liquid chromatography–tandem mass spectrometry with direct injection: A green approach. J Chromatogr A 2015; 1418:177-184. [DOI: 10.1016/j.chroma.2015.09.066] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 09/18/2015] [Accepted: 09/19/2015] [Indexed: 10/23/2022]
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14
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Abstract
Biomedical analyses of drugs and their metabolites are important in new drug development, therapeutic drug monitoring and forensic toxicology. In these analyses, sample preparation is very important to isolate target compounds from complex biological matrices and markedly influences the reliability and accuracy of determination. SPME is a simple and convenient sample preparation technique that has enabled automation, miniaturization and high-throughput performance. This article focuses on current developments, their biomedical applications and future trends with emphasis on new extraction devices using selective polymer coating materials in novel SPME techniques, including fiber SPME, in-tube SPME and related techniques.
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15
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Fumes BH, Silva MR, Andrade FN, Nazario CED, Lanças FM. Recent advances and future trends in new materials for sample preparation. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.04.011] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Ribeiro C, Ribeiro AR, Maia AS, Gonçalves VMF, Tiritan ME. New trends in sample preparation techniques for environmental analysis. Crit Rev Anal Chem 2015; 44:142-85. [PMID: 25391434 DOI: 10.1080/10408347.2013.833850] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Environmental samples include a wide variety of complex matrices, with low concentrations of analytes and presence of several interferences. Sample preparation is a critical step and the main source of uncertainties in the analysis of environmental samples, and it is usually laborious, high cost, time consuming, and polluting. In this context, there is increasing interest in developing faster, cost-effective, and environmentally friendly sample preparation techniques. Recently, new methods have been developed and optimized in order to miniaturize extraction steps, to reduce solvent consumption or become solventless, and to automate systems. This review attempts to present an overview of the fundamentals, procedure, and application of the most recently developed sample preparation techniques for the extraction, cleanup, and concentration of organic pollutants from environmental samples. These techniques include: solid phase microextraction, on-line solid phase extraction, microextraction by packed sorbent, dispersive liquid-liquid microextraction, and QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe).
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Affiliation(s)
- Cláudia Ribeiro
- a CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde , Gandra , Portugal
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17
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Beinhauer J, Bian L, Fan H, Šebela M, Kukula M, Barrera JA, Schug KA. Bulk derivatization and cation exchange restricted access media-based trap-and-elute liquid chromatography–mass spectrometry method for determination of trace estrogens in serum. Anal Chim Acta 2015; 858:74-81. [DOI: 10.1016/j.aca.2014.11.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/17/2014] [Accepted: 11/22/2014] [Indexed: 01/16/2023]
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18
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Enantioseparation of chiral pharmaceuticals in biomedical and environmental analyses by liquid chromatography: An overview. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 968:8-21. [DOI: 10.1016/j.jchromb.2014.02.049] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 02/23/2014] [Accepted: 02/28/2014] [Indexed: 11/23/2022]
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19
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Fan H, Papouskova B, Lemr K, Wigginton JG, Schug KA. Bulk derivatization and direct injection of human cerebrospinal fluid for trace-level quantification of endogenous estrogens using trap-and-elute liquid chromatography with tandem mass spectrometry. J Sep Sci 2014; 37:2010-7. [DOI: 10.1002/jssc.201400165] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 04/29/2014] [Accepted: 04/30/2014] [Indexed: 02/04/2023]
Affiliation(s)
- Hui Fan
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington TX USA
| | - Barbora Papouskova
- Department of Analytical Chemistry-RCPTM; Palacky University; Olomouc Czech Republic
| | - Karel Lemr
- Department of Analytical Chemistry-RCPTM; Palacky University; Olomouc Czech Republic
| | - Jane G. Wigginton
- Department of Surgery; University of Texas Southwestern Medical Center; Dallas TX USA
| | - Kevin A. Schug
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington TX USA
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20
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Hyodo K, Yamamoto E, Suzuki T, Kikuchi H, Asano M, Ishihara H. Development of liposomal anticancer drugs. Biol Pharm Bull 2014; 36:703-7. [PMID: 23649329 DOI: 10.1248/bpb.b12-01106] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Liposomes are drug delivery systems that can alter the pharmacokinetic properties of compounds. The adverse effects of anticancer agents are a limiting factor for cancer chemotherapy, therefore, liposomal formulations have the potential to improve the therapeutic efficacy of anticancer agents by enhancing their accumulation in tumors and reducing non-selective distribution to normal tissues, which is known as the enhanced permeability and retention effect. To develop a liposomal anticancer agent as a drug product, its formulation must be designed to ensure its quality until it is administered to patients and to exert maximum potency in clinical use rather than in animal experiments. The chemical stability and physicochemical stability of the ingredients are key factors in the design of liposomal formulations. Drug release rates are critical factors in the therapeutic efficacy of liposomal drug products because the encapsulated drug has no pharmacological activity, and only released drug can exert antitumor/toxic activities. Liposomes should maintain the drug in a stable state in the circulation and then promptly release it after accumulation in the target tissue in order to achieve a sufficient drug concentration. To understand the profile of the formulation and to guarantee the quality of drug product, a reliable analytical method that can determine the released and encapsulated drugs in biological fluids is required. Simple online solid phase extractions of the released and encapsulated drugs using a column-switching HPLC system meet the requirements and this system enables accurate in vitro release testing and in vivo pharmacokinetic evaluation. This review introduces the process of liposomal drug product development from various viewpoints.
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Affiliation(s)
- Kenji Hyodo
- DDS Research, Global Formulation Research Japan, Pharmaceutical Science & Technology Core Function Unit, Eisai Product Creation Systems, Eisai Co, Ltd, Ibaraki 300–2635, Japan.
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21
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On-line solid phase extraction–liquid chromatography, with emphasis on modern bioanalysis and miniaturized systems. J Pharm Biomed Anal 2014; 87:120-9. [DOI: 10.1016/j.jpba.2013.05.006] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Revised: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 11/24/2022]
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22
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Yang SH, Fan H, Classon RJ, Schug KA. Restricted access media as a streamlined approach toward on-line sample preparation: Recent advancements and applications. J Sep Sci 2013; 36:2922-38. [DOI: 10.1002/jssc.201300595] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 06/16/2013] [Accepted: 06/21/2013] [Indexed: 01/22/2023]
Affiliation(s)
- Samuel H. Yang
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX USA
| | - Hui Fan
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX USA
| | | | - Kevin A. Schug
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX USA
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23
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Núñez O, Gallart-Ayala H, Martins CP, Lucci P, Busquets R. State-of-the-art in fast liquid chromatography–mass spectrometry for bio-analytical applications. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 927:3-21. [DOI: 10.1016/j.jchromb.2012.12.031] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 12/03/2012] [Accepted: 12/08/2012] [Indexed: 11/29/2022]
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24
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Abstract
New analytical platforms have been developed in response to the need for attaining increased peak capacity for multicomponent complex analysis with higher sensitivity and characterization of the analytes, and high-throughput capabilities. This review outlines the fundamental principles of target and comprehensive 2D LC method development and encompasses applications of LC–LC and LC × LC coupled to MS in bioanalysis using a variety of online analytical procedures. It also provides a rationale for the usage of the most employed mass analyzers and ionization sources on these platforms.
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25
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Moura F, de Almeida FG, Rebelo Lopes B, Bezerra Cass Q. Quantification of ampicillin in bovine milk by coupled-column ultrahigh-performance liquid chromatography-tandem mass spectrometry. J Sep Sci 2012; 35:2615-20. [DOI: 10.1002/jssc.201200205] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 04/24/2012] [Accepted: 05/29/2012] [Indexed: 01/17/2023]
Affiliation(s)
| | | | | | - Quezia Bezerra Cass
- Department of Chemistry; Federal University of São Carlos; São Carlos São Paulo Brazil
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26
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Xu D, Dong X, Zhang H, Wang H, Jiang P, Zhang M. Preparation of bi-layer-polymer coated silica using atom transfer radical polymerization and its application as restricted access phase for HPLC separation of hydrophobic molecules in biological fluids. J Sep Sci 2012; 35:1573-81. [DOI: 10.1002/jssc.201200141] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Xiangchao Dong
- College of Chemistry; Nankai University; Tianjin P. R. China
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Abstract
Column switching techniques, using two or more stationary phase columns, are useful for trace enrichment and online automated sample preparation. Target fractions from the first column are transferred online to a second column with different properties for further separation. Column switching techniques can be used to determine the analytes in a complex matrix by direct sample injection or by simple sample treatment. Online column switching sample preparation is usually performed in combination with HPLC or capillary electrophoresis. SPE or turbulent flow chromatography using a cartridge column and in-tube solid-phase microextraction using a capillary column have been developed for convenient column switching sample preparation. Furthermore, various micro-/nano-sample preparation devices using new polymer-coating materials have been developed to improve extraction efficiency. This review describes current developments and future trends in novel column switching sample preparation in bioanalysis, focusing on innovative column switching techniques using new extraction devices and materials.
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Lopes B, Barreiro J, Baraldi P, Cass Q. Quantification of carbamazepine and its active metabolite by direct injection of human milk serum using liquid chromatography tandem ion trap mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 889-890:17-23. [DOI: 10.1016/j.jchromb.2012.01.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 01/19/2012] [Accepted: 01/20/2012] [Indexed: 11/30/2022]
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29
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Adsorption of peptides and small proteins with control access polymer permeation to affinity binding sites. Part II: Polymer permeation-ion exchange separation adsorbents with polyethylene glycol and strong anion exchange groups. J Chromatogr A 2012; 1227:126-37. [DOI: 10.1016/j.chroma.2011.12.092] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Revised: 12/09/2011] [Accepted: 12/27/2011] [Indexed: 11/21/2022]
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González-Ortega O, Porath J, Guzmán R. Adsorption of peptides and small proteins with control access polymer permeation to affinity binding sites. Part I: Polymer permeation-immobilized metal ion affinity chromatography separation adsorbents with polyethylene glycol and immobilized metal ions. J Chromatogr A 2012; 1227:115-25. [PMID: 22281505 DOI: 10.1016/j.chroma.2011.12.091] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 12/09/2011] [Accepted: 12/27/2011] [Indexed: 10/14/2022]
Abstract
Despite the many efforts to develop efficient protein purification techniques, the isolation of peptides and small proteins on a larger than analytical scale remains a significant challenge. Recovery of small biomolecules from diluted complex biological mixtures, such as human serum, employing porous adsorbents is a difficult task mainly due to the presence of concentrated large biomolecules that can add undesired effects in the system such as blocking of adsorbent pores, impairing diffusion of small molecules, or competition for adsorption sites. Adsorption and size exclusion chromatography (AdSEC) controlled access media, using polyethylene glycol (PEG) as a semi-permeable barrier on a polysaccharide matrix, have been developed and explored in this work to overcome such effects and to preferentially adsorb small molecules while rejecting large ones. In the first part of this work, adsorption studies were performed with small peptides and proteins from synthetic mixtures using controlled access polymer permeation adsorption (CAPPA) media created by effectively grafting PEG on an immobilized metal affinity chromatography (IMAC) agarose resin, where chelating agents and immobilized metal ions were used as the primary affinity binding sites. Synthetic mixtures consisted of bovine serum albumin (BSA) with small proteins, peptides, amino acids (such as histidine or Val⁴-Angiotensin III), and small molecules-spiked human serum. The synthesized hybrid adsorbent consisted of agarose beads modified with iminodiacetic (IDA) groups, loaded with immobilized Cu(II) ions, and PEG. These CAPPA media with grafted PEG on the interior and exterior surfaces of the agarose matrix were effective in rejecting high molecular weight proteins. Different PEG grafting densities and PEG of different molecular weight were tested to determine their effect in rejecting and controlling adsorbent permeation properties. Low grafting density of high molecular weight PEG was found to be as effective as high grafting density of low molecular weight PEG in the rejecting properties of the semi-permeable synthesized media.
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Affiliation(s)
- Omar González-Ortega
- Department of Chemical and Environmental Engineering, The University of Arizona, Tucson, AZ 85721,USA
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Direct, simultaneous measurement of liposome-encapsulated and released drugs in plasma by on-line SPE–SPE–HPLC. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:3620-5. [DOI: 10.1016/j.jchromb.2011.10.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 09/24/2011] [Accepted: 10/03/2011] [Indexed: 01/08/2023]
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Barreiro JC, Vanzolini KL, Cass QB. Direct injection of native aqueous matrices by achiral–chiral chromatography ion trap mass spectrometry for simultaneous quantification of pantoprazole and lansoprazole enantiomers fractions. J Chromatogr A 2011; 1218:2865-70. [DOI: 10.1016/j.chroma.2011.02.064] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2010] [Revised: 02/22/2011] [Accepted: 02/23/2011] [Indexed: 10/18/2022]
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Abstract
The acetonitrile shortage during 2008 to 2009 challenged bioanalytical scientists due to the ubiquitous role that acetonitrile plays in sample preparation and analysis. Replacement, reduction and reuse of acetonitrile were the core tenants behind each approach used to tackle the shortage. Sample preparation of biological matrices can be accomplished by protein precipitation using a variety of solvents; methanol is usually the best substitute for acetonitrile. The potential liabilities in using methanol can be handled with appropriate modifications. Often methanol is superior to acetonitrile for both protein precipitation and chromatography if phospholipid interference is a problem. Solvent consumption can be minimized by reducing column dimensions and particle size. Separations can be achieved at greatly reduced run times using sub-2-μm and fused-core particle columns. Emerging technologies, such as desorption ESI, direct analysis in real time and laser diode thermal desorption, eliminate the need for chromatography and achieve significant solvent and time savings. Acetonitrile recyclers can purify HPLC waste for reuse.
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Barreiro JC, Vanzolini KL, Madureira TV, Tiritan ME, Cass QB. A column-switching method for quantification of the enantiomers of omeprazole in native matrices of waste and estuarine water samples. Talanta 2010; 82:384-91. [DOI: 10.1016/j.talanta.2010.04.056] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 04/24/2010] [Accepted: 04/26/2010] [Indexed: 11/29/2022]
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Andrade LS, de Moraes MC, Rocha-Filho RC, Fatibello-Filho O, Cass QB. A multidimensional high performance liquid chromatography method coupled with amperometric detection using a boron-doped diamond electrode for the simultaneous determination of sulfamethoxazole and trimethoprim in bovine milk. Anal Chim Acta 2009; 654:127-32. [DOI: 10.1016/j.aca.2009.09.035] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Revised: 09/18/2009] [Accepted: 09/23/2009] [Indexed: 11/17/2022]
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