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Enantioresolution and Binding Affinity Studies on Human Serum Albumin: Recent Applications and Trends. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9110304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The interaction between proteins and drugs or other bioactive compounds has been widely explored over the past years. Several methods for analysis of this phenomenon have been developed and improved. Nowadays, increasing attention is paid to innovative methods, such as high performance affinity liquid chromatography (HPALC) and affinity capillary electrophoresis (ACE), taking into account various advantages. Moreover, the development of separation methods for the analysis and resolution of chiral drugs has been an area of ongoing interest in analytical and medicinal chemistry research. In addition to bioaffinity binding studies, both HPALC and ACE al-low one to perform other type of analyses, namely, displacement studies and enantioseparation of racemic or enantiomeric mixtures. Actually, proteins used as chiral selectors in chromatographic and electrophoretic methods have unique enantioselective properties demonstrating suitability for the enantioseparation of a large variety of chiral drugs or other bioactive compounds. This review is mainly focused in chromatographic and electrophoretic methods using human serum albumin (HSA), the most abundant plasma protein, as chiral selector for binding affinity analysis and enantioresolution of drugs. For both analytical purposes, updated examples are presented to highlight recent applications and current trends.
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Lopes LC, Lima D, Mendes Hacke AC, Schveigert BS, Calaça GN, Simas FF, Pereira RP, Iacomini M, Viana AG, Pessôa CA. Gold nanoparticles capped with polysaccharides extracted from pineapple gum: Evaluation of their hemocompatibility and electrochemical sensing properties. Talanta 2021; 223:121634. [PMID: 33303133 DOI: 10.1016/j.talanta.2020.121634] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 02/02/2023]
Abstract
In the present work, gold nanoparticles were synthesized through a green route by using, for the first time, polysaccharides extracted from pineapple gum (PG) as the reducing and capping agent. The obtained nanoparticles (AuNPs-PG) were characterized by UV-VIS, FTIR, TEM, FESEM, EDX, XRD, and zeta potential measurements, which confirmed that PG was effective to produce AuNPs with an average diameter of 10.3 ± 1.6 nm. The AuNPs-PG were employed as the modifier of glassy carbon paste electrodes (CPE/AuNPs-PG), which were applied as sensitive electrochemical sensors to the determination of the antihistamine drug promethazine hydrochloride (PMZ). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurements showed that the AuNPs-PG could enhance the electronic transfer properties of the glassy carbon paste, which was due to their large surface area and high electrical conductivity. After optimization of the instrumental parameters of square wave voltammetry (SWV) through a Box-Behnken factorial design, a linear relationship between the anodic peak current and PMZ concentration was obtained in the range from 2.0 to 15.7 μmol L-1 in McIlvaine buffer solution pH 5.0. The detection and quantification limits were found to be equal to 1.33 and 4.44 μmol L-1, respectively. The developed sensors could successfully quantify PMZ in different commercial pharmaceutical formulations, with satisfactory levels of accuracy and precision. In addition to improving the analytical features of the electrodes, hemocompatibility assays carried out on erythrocytes and leukocytes showed that the AuNPs-PG do not exhibit toxic effects on the referred cells. This interesting behavior enables their use in biocompatible electrochemical sensing platforms as well as for future biomedical investigations.
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Affiliation(s)
- Luma Clarindo Lopes
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Dhésmon Lima
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Ana Carolina Mendes Hacke
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Bianca Siqueira Schveigert
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Giselle Nathaly Calaça
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Fernanda Fogagnoli Simas
- Department of Cellular Biology, Universidade Federal do Paraná, Av. Coronel Francisco H. dos Santos, 100, 81531-990, Curitiba, Paraná, Brazil
| | - Romaiana Picada Pereira
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Universidade Federal do Paraná, Av. Coronel Francisco H. dos Santos, 100, 81531-990, Curitiba, Paraná, Brazil
| | - Adriano Gonçalves Viana
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Christiana Andrade Pessôa
- Department of Chemistry, Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil.
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Mwamwitwa KW, Kaibere RM, Fimbo AM, Sabitii W, Ntinginya NE, Mmbaga BT, Shewiyo DH, Shearer MC, Smith AD, Kaale EA. A retrospective cross-sectional study to determine chirality status of registered medicines in Tanzania. Sci Rep 2020; 10:17834. [PMID: 33082444 PMCID: PMC7575591 DOI: 10.1038/s41598-020-74932-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/08/2020] [Indexed: 11/25/2022] Open
Abstract
Medicines with a stereogenic center (asymmetric carbon) are mainly present as racemates with a mixture of equal amounts of enantiomers. One enantiomer may be active while the other inactive, alternatively one may produce side-effects and even toxicity. However, there is lack of information on the chirality status (either racemates, single active enantiomer or achiral) of medicines circulated on the market particularly in African countries. We established the chirality status of registered medicines in Tanzania by conducting a retrospective cross-sectional study. Registration data for the past 15 years from 2003 to 2018 were extracted from TMDA-IMIS database to Microsoft excel for review and analysis. A total of 3,573 human medicines had valid registration. Out of which 2,150 (60%) were chiral and 1,423 (40%) achiral. Out of the chiral medicines, 1,591 (74%) and 559 (26%) were racemates and single active enantiomers, respectively. The proportion of racemates within chiral medicines was considerably higher than single enantiomer medicines. The use of racemates may cause harm to the public and may contribute to antimicrobial resistance due to potential existence of inactive and toxic enantiomers. In order to protect public health, regulatory bodies need to strengthen control of chiral medicines by conducting analysis of enantiomeric impurity.
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Affiliation(s)
- Kissa W Mwamwitwa
- Pharm R&D Lab and Department of Medicinal Chemistry, School of Pharmacy, Muhimbili University of Health and Allied Sciences, P. O. Box 65545, Dar es Salaam, Tanzania.
- Tanzania Medicines and Medical Devices Authority, P. O. Box 77150, Dar es Salaam, Tanzania.
| | - Raphael M Kaibere
- Pharm R&D Lab and Department of Medicinal Chemistry, School of Pharmacy, Muhimbili University of Health and Allied Sciences, P. O. Box 65545, Dar es Salaam, Tanzania
| | - Adam M Fimbo
- Tanzania Medicines and Medical Devices Authority, P. O. Box 77150, Dar es Salaam, Tanzania
| | - Wilber Sabitii
- School of Medicine, University of St, Andrews, Fife, KY16 9TF, Scotland, UK
| | - Nyanda E Ntinginya
- National Institute of Medical Research - Mbeya Medical Research Centre, P. O. Box 2410, Mbeya, Tanzania
| | - Blandina T Mmbaga
- Kilimanjaro Clinical Research Institute, P. O. Box 2236, Moshi, Kilimanjaro, Tanzania
- Kilimanjaro Christian Medical University College, P. O. Box 3010, Moshi, Kilimanjaro, Tanzania
| | - Danstan H Shewiyo
- Tanzania Medicines and Medical Devices Authority, P. O. Box 77150, Dar es Salaam, Tanzania
| | - Morven C Shearer
- School of Medicine, University of St, Andrews, Fife, KY16 9TF, Scotland, UK
| | - Andrew D Smith
- School of Chemistry, University of St, Andrews, Fife, KY16 9TF, Scotland, UK
| | - Eliangiringa A Kaale
- Pharm R&D Lab and Department of Medicinal Chemistry, School of Pharmacy, Muhimbili University of Health and Allied Sciences, P. O. Box 65545, Dar es Salaam, Tanzania
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Escuder-Gilabert L, Martín-Biosca Y, Perez-Baeza M, Sagrado S, Medina-Hernández MJ. Trimeprazine is enantioselectively degraded by an activated sludge in ready biodegradability test conditions. WATER RESEARCH 2018; 141:57-64. [PMID: 29775773 DOI: 10.1016/j.watres.2018.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 05/02/2018] [Accepted: 05/05/2018] [Indexed: 06/08/2023]
Abstract
A great number of available pharmaceuticals are chiral compounds. Although they are usually manufactured as racemic mixtures, they can be enantioselectively biodegraded as a result of microbial processes. In this paper, a biodegradability assay in similar conditions to those recommended in OECD tests of enantiomers of trimeprazine (a phenothiazine employed as a racemate) is carried out. Experiments were performed in batch mode using a minimal salts medium inoculated with an activated sludge (collected from a Valencian Waste Water Treatment Plant, WWTP) and supplemented with the racemate. The concentration of the enantiomers of trimeprazine were monitored by means of a chiral HPLC method using a cellulose-based chiral stationary phase and 0.5 M NaClO4/acetonitrile (60:40, v/v) mobile phases. Experiments were performed at three concentration levels of the racemate. In parallel, the optical density at 600 nm (OD600) was measured to control the biomass growth and to connect it with enantioselectivity. The calculated enantiomeric fractions (EF) offer the first evidence of enantioselective biodegradation of trimeprazine. A simplified Monod equation was used as a curve fitting approach for concentration (S), biodegradation (BD), and for the first time, EF experimental data in order to expand the usefulness of the results. Precision studies on S (repeatability conditions) and, for the first time, EF (intermediate precision conditions) were also performed.
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Affiliation(s)
| | - Yolanda Martín-Biosca
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain.
| | - Mireia Perez-Baeza
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain
| | - Salvador Sagrado
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain; Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Burjassot, Valencia, Spain
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Tseng WB, Hsieh MM, Chiu TC, Yu PL, Chen SH. Enantioseparation of phenothiazines through capillary electrophoresis with solid phase extraction and polymer based stacking. J Food Drug Anal 2018; 26:1171-1179. [PMID: 29976409 PMCID: PMC9303030 DOI: 10.1016/j.jfda.2017.12.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/15/2017] [Accepted: 12/07/2017] [Indexed: 12/02/2022] Open
Abstract
This study developed a sensitive method involving capillary electrophoresis (CE) coupled with ultraviolet absorption for the simultaneous separation of chiral phenothiazine drugs at nanomolar concentration levels. The method consists of hydroxypropyl-γ-cyclodextrin (Hp-γ-CD) as a chiral selector and poly (diallyldimethylammonium chloride) (PDDAC)-based CE. Five pairs of d,l-phenothiazines were baseline separated using a background electrolyte containing 0.9% PDDAC, 5 mM Hp-γ-CD, and 100 mM tris(hydroxymethyl)aminomethane (Tris)-formate (pH 3.0). The five pairs were successfully stacked on the basis of the difference in viscosity between the PDDAC-containing background electrolyte and the sample solution, with almost no loss of resolution. The combination of a solid-phase extraction and PDDAC-mediated CE can efficiently improve the sensitivity of the phenothiazine enantiomers. Under optimal conditions, calibration graphs displayed the linear range between 6 and 1500 nM, with relative standard deviation values lower than 3.5% (n = 5). Detection limit ranged from 2.1 to 6.3 nM for target analytes, and 607- to 1555-fold enhancement was achieved. The practicality of using the proposed method to determine five pairs of d,l-phenothiazines in urine is also validated, in which recoveries between recoveries of all phenothiazines from urine ranged from 89% to 101%.
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Affiliation(s)
- Wei-Bin Tseng
- Department of College of Ecology and Resource Engineering, Wuyi University, China
| | - Ming-Mu Hsieh
- Department of Chemistry, National Kaohsiung Normal University, Taiwan.
| | - Tai-Chia Chiu
- Department of Applied Science, National Taitung University, Taitung, Taiwan.
| | - Po-Lin Yu
- Department of Chemistry, National Kaohsiung Normal University, Taiwan
| | - Szu-Hua Chen
- Department of Chemistry, National Kaohsiung Normal University, Taiwan
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Yu PL, Tu YY, Hsieh MM. Combination of poly(diallyldimethylammonium chloride) and hydroxypropyl-γ-cyclodextrin for high-speed enantioseparation of phenothiazines by capillary electrophoresis. Talanta 2015; 131:330-4. [DOI: 10.1016/j.talanta.2014.08.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 08/05/2014] [Accepted: 08/05/2014] [Indexed: 11/28/2022]
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Borowiecki P, Paprocki D, Dranka M. First chemoenzymatic stereodivergent synthesis of both enantiomers of promethazine and ethopropazine. Beilstein J Org Chem 2014; 10:3038-55. [PMID: 25670974 PMCID: PMC4311712 DOI: 10.3762/bjoc.10.322] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 12/01/2014] [Indexed: 12/17/2022] Open
Abstract
Enantioenriched promethazine and ethopropazine were synthesized through a simple and straightforward four-step chemoenzymatic route. The central chiral building block, 1-(10H-phenothiazin-10-yl)propan-2-ol, was obtained via a lipase-mediated kinetic resolution protocol, which furnished both enantiomeric forms, with superb enantioselectivity (up to E = 844), from the racemate. Novozym 435 and Lipozyme TL IM have been found as ideal biocatalysts for preparation of highly enantioenriched phenothiazolic alcohols (up to >99% ee), which absolute configurations were assigned by Mosher's methodology and unambiguously confirmed by XRD analysis. Thus obtained key-intermediates were further transformed into bromide derivatives by means of PBr3, and subsequently reacted with appropriate amine providing desired pharmacologically valuable (R)- and (S)-stereoisomers of title drugs in an ee range of 84-98%, respectively. The modular amination procedure is based on a solvent-dependent stereodivergent transformation of the bromo derivative, which conducted in toluene gives mainly the product of single inversion, whereas carried out in methanol it provides exclusively the product of net retention. Enantiomeric excess of optically active promethazine and ethopropazine were established by HPLC measurements with chiral columns.
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Affiliation(s)
- Paweł Borowiecki
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego St. 3, 00-664 Warsaw, Poland
| | - Daniel Paprocki
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego St. 3, 00-664 Warsaw, Poland
| | - Maciej Dranka
- Warsaw University of Technology, Faculty of Chemistry, Noakowskiego St. 3, 00-664 Warsaw, Poland
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Orlandini S, Gotti R, Furlanetto S. Multivariate optimization of capillary electrophoresis methods: a critical review. J Pharm Biomed Anal 2013; 87:290-307. [PMID: 23669025 DOI: 10.1016/j.jpba.2013.04.014] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 04/12/2013] [Indexed: 11/19/2022]
Abstract
In this article a review on the recent applications of multivariate techniques for optimization of electromigration methods, is presented. Papers published in the period from August 2007 to February 2013, have been taken into consideration. Upon a brief description of each of the involved CE operative modes, the characteristics of the chemometric strategies (type of design, factors and responses) applied to face a number of analytical challenges, are presented. Finally, a critical discussion, giving some practical advices and pointing out the most common issues involved in multivariate set-up of CE methods, is provided.
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Affiliation(s)
- Serena Orlandini
- Department of Chemistry "U. Schiff", University of Florence, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
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Zheng Y, Wang X, Ji Y. Monoliths with proteins as chiral selectors for enantiomer separation. Talanta 2012; 91:7-17. [DOI: 10.1016/j.talanta.2012.01.039] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 01/15/2012] [Accepted: 01/18/2012] [Indexed: 12/25/2022]
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Evaluation of enantioselective binding of propanocaine to human serum albumin by ultrafiltration and electrokinetic chromatography under intermediate precision conditions. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 889-890:87-94. [PMID: 22366280 DOI: 10.1016/j.jchromb.2012.01.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 01/24/2012] [Accepted: 01/29/2012] [Indexed: 11/23/2022]
Abstract
Stereoselectivity in protein binding can have a significant effect on the pharmacokinetic and pharmacodynamic properties of chiral drugs. In this paper, the enantioselective binding of propanocaine (PRO) enantiomers to human serum albumin (HSA), the most relevant plasmatic protein in view of stereoselectivity, has been evaluated by incubation and ultrafiltration of racemic PRO-HSA mixtures and chiral analysis of the bound and unbound fractions by electrokinetic chromatography using HSA as chiral selector. Experimental conditions for the separation of PRO enantiomers using HSA as chiral selector and electrokinetic chromatography have been optimised. Affinity constants and protein binding in percentage (PB) were obtained for both enantiomers of PRO, as well as the enantioselectivity (ES) to HSA. Data were obtained in two independent working sessions (days). The influence of the session and fraction processed factors were examined. A univariate direct-estimation approach was used facilitating outliers' identification and statistical comparison. Non-linear fitting of data was used to verify the stoichiometry and affinity estimations obtained by the direct approach. Robust statistics were applied to obtain reliable estimations of uncertainty, accounting for the factors (day and processed fraction), thus representing intermediate precision conditions. Mimicking in vivo experimental conditions, information unapproachable by in vivo experiments was obtained for PRO enantiomers interacting with HSA. For the first (E1) and the second (E2) eluted PRO enantiomers the results were: 1:1 stoichiometry, medium affinity constants, logK(E1)=3.20±0.16 and log K(E2)=3.40±0.14, medium protein binding percentage, PB=48.7 and 60.1% for E1 and E2, respectively, and moderate but significant enantioselectivity, ES=K(E2)/K(E1)=1.5±0.3.
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de Jesus CG, Sampaio Forte CM, Wohnrath K, Andrade Pessôa C, de Sá Soares JE, Fujiwara ST, de Lima-Neto P, Nunes Correia A. Electroanalytical Performance of (SiPy+Cl−/CuTsPc)5 LbL Film for Detecting Promethazine Hydrochloride. ELECTROANAL 2011. [DOI: 10.1002/elan.201100202] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yuan B, Wu H, Sanders T, McCullum C, Zheng Y, Tchounwou PB, Liu YM. Chiral capillary electrophoresis-mass spectrometry of 3,4-dihydroxyphenylalanine: evidence for its enantioselective metabolism in PC-12 nerve cells. Anal Biochem 2011; 416:191-5. [PMID: 21683678 DOI: 10.1016/j.ab.2011.05.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 05/11/2011] [Accepted: 05/17/2011] [Indexed: 11/26/2022]
Abstract
A fully automated chiral capillary electrophoresis-tandem mass spectrometry (CE-MS/MS) method was developed for enantiomeric quantification of 3,4-dihydroxyphenylalanine (DOPA) and its precursors, phenylalanine (Phe) and tyrosine (Tyr). To avoid MS source contamination, a negatively charged chiral selector, sulfated β-cyclodextrin (sulfated β-CD), that migrated away from the detector was used in combination with the partial filling technique. The six stereoisomers were simultaneously quantified in less than 12 min. Detection limits were 0.48 and 0.51 μM for l- and d-DOPA enantiomers, respectively. Assay reproducibility values (relative standard deviations [RSDs], n=6) were 4.43, 3.15, 4.91, 5.16, 3.96, and 3.25% for l- and d-DOPA, l- and d-Tyr, and l- and d-Phe at 10 μM, respectively. Thanks to the high enantioseparation efficiency, detection of trace d-DOPA in l-/d-DOPA mixtures could be achieved. The assay was employed to study the metabolism of DOPA, a well-known therapeutic drug for treating Parkinson's disease. It was found that l-DOPA was metabolized effectively in PC-12 cells. Approximately 88% of l-DOPA disappeared after incubation at a cell density of 2×10(6)cells/ml for 3 h. However, d-DOPA coexisting with l-DOPA in the incubation solution remained intact. The enantiospecific metabolism of DOPA in this neuronal model was demonstrated.
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Affiliation(s)
- Baiqing Yuan
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS 39217, USA
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Lu H, Chen G. Recent advances of enantioseparations in capillary electrophoresis and capillary electrochromatography. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2011; 3:488-508. [PMID: 32938063 DOI: 10.1039/c0ay00489h] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A comprehensive survey of recent developments and applications of capillary electromigration techniques for enantioseparations from January 2006 to June 2010 is presented. The techniques include capillary electrophoresis, chip capillary electrophoresis and capillary electrochromatography. The separation principles and the chiral recognition mechanisms are discussed. Additionally, on-line preconcentrations in chiral capillary electrophoresis are also reviewed.
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Affiliation(s)
- Huang Lu
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
- Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, Fujian 350108, China
| | - Guonan Chen
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
- Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, Fujian 350108, China
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Fortunato de Carvalho Rocha W, Luis Rosa A, Antônio Martins J, Poppi RJ. Multivariate control charts based on net analyte signal and near infrared spectroscopy for quality monitoring of Nimesulide in pharmaceutical formulations. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Preinerstorfer B, Lämmerhofer M, Lindner W. Advances in enantioselective separations using electromigration capillary techniques. Electrophoresis 2009; 30:100-32. [DOI: 10.1002/elps.200800607] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Vayá I, Bueno C, Jiménez M, Miranda M. Determination of Enantiomeric Compositions by Transient Absorption Spectroscopy using Proteins as Chiral Selectors. Chemistry 2008; 14:11284-7. [DOI: 10.1002/chem.200801657] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Martínez-Gómez MA, Escuder-Gilabert L, Villanueva-Camañas RM, Sagrado S, Medina-Hernández MJ. Enantioseparation of nuarimol by affinity electrokinetic chromatography-partial filling technique using human serum albumin as chiral selector. J Sep Sci 2008; 31:3265-71. [DOI: 10.1002/jssc.200800190] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Madej K, Kościelniak P. Review of Analytical Methods for Identification and Determination of PHEs and Tricyclic Antidepressants. Crit Rev Anal Chem 2008. [DOI: 10.1080/10408340701804343] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Martínez-Gómez MA, Villanueva-Camañas RM, Sagrado S, Medina-Hernández MJ. Evaluation of enantioselective binding of basic drugs to plasma by ACE. Electrophoresis 2007; 28:3056-63. [PMID: 17661317 DOI: 10.1002/elps.200700222] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The present paper deals with the evaluation of the stereoselective binding of antihistamines (brompheniramine, chlorpheniramine, hydroxyzine, orphenadrine and phenindamine), phenothiazines (promethazine and trimeprazine) and a local anesthetic (bupivacaine) to human plasma proteins. Since all of them are drugs highly bound to proteins, a methodology to determine the bound fraction of each drug enantiomer was proposed. This methodology includes the incubation of samples containing plasma and racemic drug, ultrafiltration of the mixture and the chiral separation of enantiomers in the bound drug fraction using affinity EKC (AEKC)-partial filling technique and HSA as chiral selector. The results shown in this paper represent the first evidence of the enantioselective binding of some antihistamines such as brompheniramine, hydroxyzine, orphenadrine and phenindamine and the phenothiazines, promethazine and trimeprazine, to human plasma proteins. The binding of phenindamine to plasma presented the highest enantioselectivity (ES) (ES = 2.5) followed by trimeprazine (ES = 1.5) and promethazine (ES = 1.4).
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Affiliation(s)
- María Amparo Martínez-Gómez
- Departament de Química Analítica, Facultat de Farmacia, Universitat de Valencia, C/Vicent Andrés Estellés s/n, Valencia, Spain
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Martínez-Gómez MA, Villanueva-Camañas RM, Sagrado S, Medina-Hernández MJ. Evaluation of enantioselective binding of antihistamines to human serum albumin by ACE. Electrophoresis 2007; 28:2635-43. [PMID: 17605150 DOI: 10.1002/elps.200600742] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The drug binding to plasma and tissue proteins is a fundamental factor in determining the overall pharmacological activity of a drug. HSA, together with alpha(1)-acid glycoprotein, are the most important plasma proteins, which act as drug carriers, with implications on the pharmacokinetic of drugs. Among plasma proteins, HSA possesses the highest enantioselectivity. In this paper, a new methodology for the study of enantiodifferentiation of chiral drugs with HSA is developed and applied to evaluate the possible enantioselective binding of four antihistamines: brompheniramine, chlorpheniramine, hydroxyzine and orphenadrine to HSA. This study includes the determination of affinity constants of drug enantiomers to HSA and the evaluation of the binding sites of antihistamines on the HSA molecule. The developed methodology includes the ultrafiltration of samples containing HSA and racemic antihistaminic drugs and the analysis of the free or bound drug fraction using the affinity EKC-partial filling technique and HSA as chiral selector. The results shown in this paper represent the first evidence of the enantioselective binding of antihistamines to HSA, the major plasmatic protein.
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Affiliation(s)
- María Amparo Martínez-Gómez
- Departamento de Química Analítica, Facultat de Farmacia, Universitat de Valencia, Burjassot, Valencia, Spain
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Martínez-Gómez MA, Sagrado S, Villanueva-Camañas RM, Medina-Hernández MJ. Enantiomeric quality control of antihistamines in pharmaceuticals by affinity electrokinetic chromatography with human serum albumin as chiral selector. Anal Chim Acta 2007; 592:202-9. [PMID: 17512827 DOI: 10.1016/j.aca.2007.04.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2007] [Revised: 04/04/2007] [Accepted: 04/16/2007] [Indexed: 10/23/2022]
Abstract
The present paper deals with the enantiomeric separation of six antihistaminic enantiomers by affinity electrokinetic chromatography (AEKC)-partial filling technique using human serum albumin (HSA) as chiral selector. A multivariate optimization approach of the most critical experimental variables in enantioresolution, running pH, HSA concentration and HSA plug length (SPL) was carried out since there are interactions between variables that could not be considered in an univariate optimization. The estimated and experimental resolution values obtained for antihistaminic enantiomers varied from 1.13 (for orphenadrine) to 2.15 (for brompheniramine). The optimum experimental conditions for enantioresolution of each compound were: brompheniramine, pH 8.5, [HSA] 180 microM, SPL 180 s; chlorcyclizine, pH 6.5, [HSA] 180 microM, SPL 150 s; chlorpheniramine, pH 8.25, [HSA] 160 microM, SPL 150 s; hydroxyzine, pH 7.0, [HSA] 180 microM, SPL 150 s; and orphenadrine, pH 7.8, [HSA] 160 microM, SPL 150 s. pH and the quadratic term of pH seem to be the most critical factors that determine enantioresolution of antihistamines. The validity of the developed methodologies to enantiomeric quality control of antihistamines in pharmaceutical formulations is demonstrated analyzing the content of brompheniramine, chlorpheniramine and hyroxyzine enantiomers in commercially available pharmaceutical formulations containing racemic mixtures of compounds. Resolution, accuracy, reproducibility, cost and sample throughput of the proposed methodologies make them suitable for quality control of the enantiomeric composition of antihistamines in pharmaceutical preparations.
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Affiliation(s)
- M A Martínez-Gómez
- Departamento de Química Analítica, Facultat de Farmacia, Universitat de València, C/Vicent Andrés Estellés s/n, E-46100 Burjassot, Valencia, Spain
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