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Vidal DF, Pires BC, Borges MMC, de Oliveira HL, Silva CF, Borges KB. Magnetic solid-phase extraction based on restricted-access molecularly imprinted polymers for ultrarapid determination of ractopamine residues from food samples by capillary electrophoresis. J Chromatogr A 2024; 1720:464809. [PMID: 38490141 DOI: 10.1016/j.chroma.2024.464809] [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: 12/27/2023] [Revised: 03/06/2024] [Accepted: 03/08/2024] [Indexed: 03/17/2024]
Abstract
An ultrafast, efficient, and eco-friendly method combining magnetic solid phase extraction and capillary electrophoresis with diode array detection have been developed to determine ractopamine residues in food samples. A restricted access material based on magnetic and mesoporous molecularly imprinted polymer has been properly synthesized and characterized, demonstrating excellent selectivity and high adsorbent capacity. Short-end injection capillary electrophoresis method was optimized: 75 mM triethylamine pH 7 as BGE, -20 kV, 50 mbar by hydrodynamic injection during 8 s, and capillary temperature at 25 °C; reaching ultrafast ractopamine analysis (∼0.6 min) with good peak asymmetry, and free from interfering and/or baseline noise. After sample preparation optimization, the conditions were: 1000 µL of sample at pH 6, 20 mg of adsorbent, stirring time of 120 s, 250 µL of ultrapure water as washing solvent, 1000 µL of methanol: acetic acid (7: 3, v/v) as eluent, and the adsorbent can be reused four times. In these conditions, the analytical method showed recoveries around to 100 %, linearity ranged from 9.74 to 974.0 µg kg-1, correlation coefficient (r) ≥ 0,99 in addition to adequate precision, accuracy, and robustness. After proper validation, the method was successfully applied in the analysis ractopamine residues in bovine milk and bovine and porcine muscle.
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Affiliation(s)
- Daniel Ferreira Vidal
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Bruna Carneiro Pires
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Marcella Matos Cordeiro Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Hanna Leijoto de Oliveira
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Camilla Fonseca Silva
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil
| | - Keyller Bastos Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, São João del-Rei, Minas Gerais 36301-160, Brazil.
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Cardoso AT, Martins RO, Lanças FM, Chaves AR. Molecularly imprinted polymers in online extraction liquid chromatography methods: Current advances and recent applications. Anal Chim Acta 2023; 1284:341952. [PMID: 37996153 DOI: 10.1016/j.aca.2023.341952] [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: 04/19/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND One of the primary objectives in green analytical practices is the seamless integration of extraction and separation steps, resulting in the augmentation of both analytical throughput and method performance. Consequently, the exploration of prospective sorbent materials has drawn significant attention in the scientific community, particularly concerning the potential for online procedures. Employing the optimal sorbent material within an automated analytical approach holds the promise of elevating the precision of the analytical evaluation. Molecularly imprinted polymers (MIPs) excel in specific analyte interaction within complex matrices. However, MIPs' full potential was not widely exploring especially for online analytical methodologies. RESULTS Here is presented a comprehensive overview of the current applications of MIPs as sorbent materials within integrated and automated separation methodologies applied to diverse matrices including biological, food, and environmental samples. Notably, their primary advantage, as evidenced in the literature, lies in their exceptional selectivity for the target analyte discussed according to the adopted synthesis protocol. Furthermore, the literature discussed here illustrates the versatility of MIPs in terms of modification with one or more phases which are so-called hybrid materials, such as molecularly imprinted monoliths (MIM), the molecularly imprinted ionic liquid polymer (IL-MIP), and restricted access to molecularly imprinted polymer (RAMIP). The reported advantages enhance their applicability in integrated and automated separation procedures, especially to the column switching methods, across a broader spectrum of applications. SIGNIFICANCE This revision aims to demonstrate the MIP's potential as a sorbent phase in integrated and automated methods, this comprehensive overview of MIP polymers in integrated and automated separation methodologies can be used as a valuable guide, inspiring new research on developing novel horizons for MIP applications to have their potential emphasized in analytical science and enhanced to the great analytical methods achievement.
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Affiliation(s)
- Alessandra Timóteo Cardoso
- Universidade Federal de Goiás, Instituto de Química, 74690-900, Goiânia, GO, Brazil; Universidade de São Paulo, Instituto de Química de São Carlos, São Carlos, SP, Brazil
| | | | - Fernando Mauro Lanças
- Universidade de São Paulo, Instituto de Química de São Carlos, São Carlos, SP, Brazil
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3
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Shahhoseini F, Azizi A, S.Bottaro C. A critical evaluation of molecularly imprinted polymer (MIP) coatings in solid phase microextraction devices. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116695] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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4
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An Update on the Use of Molecularly Imprinted Polymers in Beta-Blocker Drug Analysis as a Selective Separation Method in Biological and Environmental Analysis. Molecules 2022; 27:molecules27092880. [PMID: 35566233 PMCID: PMC9104958 DOI: 10.3390/molecules27092880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/19/2022] [Accepted: 04/28/2022] [Indexed: 11/17/2022] Open
Abstract
Beta-blockers are antihypertensive drugs and can be abused by athletes in some sport competitions; it is therefore necessary to monitor beta-blocker levels in biological samples. In addition, beta-blocker levels in environmental samples need to be monitored to determine whether there are contaminants from the activities of the pharmaceutical industry. Several extraction methods have been developed to separate beta-blocker drugs in a sample, one of which is molecularly imprinted polymer solid-phase extraction (MIP-SPE). MIPs have some advantages, including good selectivity, high affinity, ease of synthesis, and low cost. This review provides an overview of the polymerization methods for synthesizing MIPs of beta-blocker groups. The methods that are still widely used to synthesize MIPs for beta-blockers are the bulk polymerization method and the precipitation polymerization method. MIPs for beta-blockers still need further development, especially since many types of beta-blockers have not been used as templates in the MIP synthesis process and modification of the MIP sorbent is required, to obtain high throughput analysis.
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Cruz JC, Souza IDD, Lanças FM, Queiroz MEC. Current advances and applications of online sample preparation techniques for miniaturized liquid chromatography systems. J Chromatogr A 2022; 1668:462925. [DOI: 10.1016/j.chroma.2022.462925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 10/19/2022]
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Wang H, Huang C, Ma S, Bo C, Ou J, Gong B. Recent advances of restricted access molecularly imprinted materials and their applications in food and biological samples analysis. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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7
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Silveira AT, Barbosa AMDC, de Faria HD, Marciano LPDA, Figueiredo EC, Martins I. Online restricted access molecularly imprinted solid-phase extraction coupled with liquid chromatography-mass spectrometry for the selective determination of serum bile acids. Analyst 2022; 147:2779-2792. [DOI: 10.1039/d2an00446a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of a RAM imprinted polymer covered with bovine serum albumin applied to determine bile acids from individuals exposed to organic solvents using an online-LC method.
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Affiliation(s)
- Alberto Thalison Silveira
- Laboratory of Toxicant and Drug Analyses, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas – Unifal-MG, 37130-001, Alfenas, MG, Brazil
| | - Alyne Maria da Costa Barbosa
- Laboratory of Toxicant and Drug Analyses, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas – Unifal-MG, 37130-001, Alfenas, MG, Brazil
| | - Henrique Dipe de Faria
- Laboratory of Toxicant and Drug Analyses, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas – Unifal-MG, 37130-001, Alfenas, MG, Brazil
| | - Luiz Paulo de Aguiar Marciano
- Laboratory of Toxicant and Drug Analyses, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas – Unifal-MG, 37130-001, Alfenas, MG, Brazil
| | - Eduardo Costa Figueiredo
- Laboratory of Toxicant and Drug Analyses, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas – Unifal-MG, 37130-001, Alfenas, MG, Brazil
| | - Isarita Martins
- Laboratory of Toxicant and Drug Analyses, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas – Unifal-MG, 37130-001, Alfenas, MG, Brazil
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8
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Ahmad H, Koo BH, Khan RA. Magnetite β-lactoglobulin@Fe3O4 nanocomposite for the extraction and preconcentration of As(III) species. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Molecularly imprinted polymers as a selective sorbent for forensic applications in biological samples-a review. Anal Bioanal Chem 2021; 413:6013-6036. [PMID: 34430982 DOI: 10.1007/s00216-021-03596-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/14/2021] [Accepted: 08/02/2021] [Indexed: 01/09/2023]
Abstract
Molecularly imprinted polymers (MIP) consist of a molecular recognition technology with applicability in different areas, including forensic chemistry. Among the forensic applications, the use of MIP in biological fluid analysis has gained prominence. Biological fluids are complex samples that generally require a pre-treatment to eliminate interfering agents to improve the results of the analyses. In this review, we address the development of this molecular imprinting technology over the years, highlighting the forensic applications of molecularly imprinted polymers in biological sample preparation for analysis of stimulant drugs such as cocaine, amphetamines, and nicotine.
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Köse K, Kehribar DY, Uzun L. Molecularly imprinted polymers in toxicology: a literature survey for the last 5 years. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:35437-35471. [PMID: 34024002 DOI: 10.1007/s11356-021-14510-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 05/17/2021] [Indexed: 05/23/2023]
Abstract
The science of toxicology dates back almost to the beginning of human history. Toxic chemicals, which are encountered in different forms, are always among the chemicals that should be investigated in criminal field, environmental application, pharmaceutic, and even industry, where many researches have been carried out studies for years. Almost all of not only drugs but also industrial dyes have toxic side and direct effects. Environmental micropollutants accumulate in the tissues of all living things, especially plants, and show short- or long-term toxic symptoms. Chemicals in forensic science can be known by detecting the effect they cause to the body with the similar mechanism. It is clear that the best tracking tool among analysis methods is molecularly printed polymer-based analytical setups. Different polymeric combinations of molecularly imprinted polymers allow further study on detection or extraction using chromatographic and spectroscopic instruments. In particular, methods used in forensic medicine can detect trace amounts of poison or biological residues on the scene. Molecularly imprinted polymers are still in their infancy and have many variables that need to be developed. In this review, we summarized how molecular imprinted polymers and toxicology intersect and what has been done about molecular imprinted polymers in toxicology by looking at the studies conducted in the last 5 years.
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Affiliation(s)
- Kazım Köse
- Department of Joint Courses, Hitit University, Çorum, Turkey.
| | - Demet Yalçın Kehribar
- Department of Internal Medicine, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Lokman Uzun
- Department of Chemistry, Faculty of Science, Hacettepe University, Ankara, Turkey.
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11
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Santos MG, de Carvalho DT, Caminitti LB, de Lima BBA, Cavalcanti MHDS, Dos Santos DFR, Virtuoso LS, Hirata DB, Figueiredo EC. Use of magnetic Fe 3O 4 nanoparticles coated with bovine serum albumin for the separation of lysozyme from chicken egg white. Food Chem 2021; 353:129442. [PMID: 33714116 DOI: 10.1016/j.foodchem.2021.129442] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/19/2021] [Accepted: 02/20/2021] [Indexed: 11/30/2022]
Abstract
Fe3O4 magnetic nanoparticles modified with tetraethyl orthosilicate and bovine serum albumin (Fe3O4@TEOS@BSA) were synthesized and efficiently used to separate lysozyme from egg white. Glutaraldehyde was used to crosslink the bovine serum albumine molecules around the nanoparticles. The surface modifications were attested by transmission electron microscopy, infrared spectroscopy, thermogravimetry analysis, and zeta potential. The material was thermally stable, and its surface charge was pH-dependent. The best lysozyme adsorption and desorption were obtained at pHs 10.0 and 5.0, respectively. The pseudo-second-order model fitted well into the lysozyme adsorption kinetic data and the time for the equilibrium was 15 min. The adsorption equilibrium results were best described by the Freundlich model. Fe3O4@TEOS@BSA particles were very efficient to extract lysozyme from chicken egg, according to the SDS-PAGE analyses. The extracted molecules maintained their enzymatic activity in about 90%. Fe3O4@TEOS@BSA particles were easily recycled, with their reuse being possible 5 times with the same performance.
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Affiliation(s)
- Mariane Gonçalves Santos
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil.
| | - Diailison Teixeira de Carvalho
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
| | - Lucas Belga Caminitti
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
| | - Bruna Bueno Alves de Lima
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
| | - Marcello Henrique da Silva Cavalcanti
- Colloid Chemistry Group, Chemistry Institute, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
| | - Daniel Felipe Rocha Dos Santos
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
| | - Luciano Sindra Virtuoso
- Colloid Chemistry Group, Chemistry Institute, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
| | - Daniela Battaglia Hirata
- Bioprocess Laboratory - BIOPRO, Chemistry Institute, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
| | - Eduardo Costa Figueiredo
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva street, 37130-000 Alfenas, MG, Brazil
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12
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Restricted Access Molecularly Imprinted Polymers. Methods Mol Biol 2021; 2359:53-70. [PMID: 34410659 DOI: 10.1007/978-1-0716-1629-1_5] [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: 01/11/2023]
Abstract
The use of conventional molecularly imprinted polymers (MIPs) for biological sample preparation is a difficult procedure due to the presence of high concentrations of proteins which can obstruct the selective binding sites, decrease the adsorption capacity, and compromise the analytical validation. In this way, modifications of conventional MIPs have been carried out in order to give them the ability to exclude macromolecules. Superficial coverings with hydrophilic groups and/or proteins have been the main procedures to obtain these restricted access molecularly imprinted polymers (RAMIPs ). These materials have been efficiently used for the selective extraction of small molecules from untreated complex matrices (e.g., blood, plasma, serum, and milk), without the need of a pre-deproteinization step. In this chapter, we describe a generic synthesis protocol to obtain RAMIPs as well as the assays to evaluate the protein exclusion efficiency and possible applications in offline and online procedures.
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Abrão LCDC, Silveira AT, de Faria HD, Machado SC, Mendes TV, Plácido RV, Marciano LPDA, Martins I. Toxicological analyses: analytical method validation for prevention or diagnosis. Toxicol Mech Methods 2020; 31:18-32. [PMID: 33081560 DOI: 10.1080/15376516.2020.1839612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The need for reliable results in Toxicological Analysis is recognized and required worldwide. The analytical validation ensures that a method will provide trustworthy information about a particular sample when applied in accordance with a predefined protocol, being able to determine a specific analyte at a distinct concentration range for a well-defined purpose. The driving force for developing method validation for bioanalytical projects comes from the regulatory agencies. Thus, the approach of this work is to present theoretical and practical aspects of method validation based on the analysis objective, whether for prevention or diagnosis. Although various legislative bodies accept differing interpretations of requirements for validation, the process for applying validation criteria should be adaptable for each scientific intent or analytical purpose.
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Affiliation(s)
| | - Alberto Thalison Silveira
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - Unifal-MG, Alfenas, Brazil
| | - Henrique Dipe de Faria
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - Unifal-MG, Alfenas, Brazil
| | - Simone Caetani Machado
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - Unifal-MG, Alfenas, Brazil
| | - Tássia Venga Mendes
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - Unifal-MG, Alfenas, Brazil
| | - Rodrigo Vicentino Plácido
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - Unifal-MG, Alfenas, Brazil
| | | | - Isarita Martins
- Laboratory of Toxicant and Drug Analysis, Federal University of Alfenas - Unifal-MG, Alfenas, Brazil
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Silva MS, Tavares APM, de Faria HD, Sales MGF, Figueiredo EC. Molecularly Imprinted Solid Phase Extraction Aiding the Analysis of Disease Biomarkers. Crit Rev Anal Chem 2020; 52:933-948. [DOI: 10.1080/10408347.2020.1843131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Matheus Siqueira Silva
- Laboratory of Toxicant and Drug Analyses, Federal University of Alfenas, Alfenas, Brazil
| | - Ana P. M. Tavares
- BioMark/ISEP, School of Engineering of the Polytechnic School of Porto, Porto, Portugal
- BioMark/UC, Department of Chemical Engineering, Faculty of Sciences and Technology of the University of Coimbra, Coimbra, Portugal
| | - Henrique Dipe de Faria
- Laboratory of Toxicant and Drug Analyses, Federal University of Alfenas, Alfenas, Brazil
| | - Maria Goreti Ferreira Sales
- BioMark/ISEP, School of Engineering of the Polytechnic School of Porto, Porto, Portugal
- BioMark/UC, Department of Chemical Engineering, Faculty of Sciences and Technology of the University of Coimbra, Coimbra, Portugal
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Speltini A, Merlo F, Maraschi F, Villani L, Profumo A. HA-C@silica sorbent for simultaneous extraction and clean-up of steroids in human plasma followed by HPLC-MS/MS multiclass determination. Talanta 2020; 221:121496. [PMID: 33076100 DOI: 10.1016/j.talanta.2020.121496] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
Abstract
Aim and novelty of this work are the development of a simple and straightforward analytical procedure for multiclass determination of steroid hormones in human plasma. The method entails a single pre-treatment step based on solid-phase extraction using a recently proposed sorbent phase (HA-C@silica). This is easily prepared with good reproducibility via pyrolysis of humic acids onto silica, and not yet tested in biological fluids. It proved to be advantageous as it showed poor affinity for the protein matrix constituents while quantitatively extracting and pre-concentrating the target analytes. Indeed, as demonstrated in bovine serum albumin solution, up to ca. 90% protein is not retained by the sorbent, similarly to the behaviour of restricted access carbon nanotubes, tested for comparison. The high albumin exclusion allowed a satisfactory clean-up avoiding protein precipitation and centrifugation before extraction. The extraction procedure, optimized by a chemometric approach (23 experimental design) in BSA solution, provided quantitative recovery (76-119%, n = 3) for all steroids working with 1:8-diluted plasma (2 mL) and 100 mg HA-C@silica. Before analytes elution by 1 mL methanol-acetonitrile (1:1, v/v), selective washings (2% v/v formic acid and 30% v/v methanol) were applied to remove the small fraction of retained proteins, thus obtaining very clean SPE extracts to be analyzed by HPLC-ESI-MS/MS. This allowed identification/quantification (MRM mode) at few ng mL-1 by a single chromatographic run. The procedure was verified in blank-certified foetal bovine serum (spikes 10-100 ng mL-1), obtaining good recovery and suitable inter-day precision (RSDs < 15%, n = 3). The analytical method, applied to real plasma samples analysis, is appealing in terms of sample throughput, extraction efficiency and clean-up.
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Affiliation(s)
- Andrea Speltini
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy.
| | - Francesca Merlo
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - Federica Maraschi
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - Luana Villani
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - Antonella Profumo
- Department of Chemistry, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy.
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Arabi M, Ostovan A, Bagheri AR, Guo X, Wang L, Li J, Wang X, Li B, Chen L. Strategies of molecular imprinting-based solid-phase extraction prior to chromatographic analysis. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115923] [Citation(s) in RCA: 197] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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17
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Zhou T, Che G, Ding L, Sun D, Li Y. Recent progress of selective adsorbents: From preparation to complex sample pretreatment. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.115678] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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de Oliveira HL, Teixeira LS, Dinali LAF, Pires BC, Simões NS, Borges KB. Microextraction by packed sorbent using a new restricted molecularly imprinted polymer for the determination of estrogens from human urine samples. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104162] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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19
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Florez DHA, Dutra FVA, Borges KB. Magnetic solid phase extraction employing a novel restricted access material based on mesoporous polyaniline coated with hydrophilic monomers and casein for determination of antibiotics in milk samples. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104145] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Liu H, Ding J, Zhang K, Ding L. Fabrication of carbon dots@restricted access molecularly imprinted polymers for selective detection of metronidazole in serum. Talanta 2019; 209:120508. [PMID: 31892057 DOI: 10.1016/j.talanta.2019.120508] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/12/2019] [Accepted: 10/26/2019] [Indexed: 02/08/2023]
Abstract
A custom-tailored design was proposed for the fabrication of carbon dots coupled with restricted access materials and molecularly imprinted polymers (CDs@RAM-MIPs) to detect metronidazole (MNZ). Biomass carbon dots (CDs) were derived from longan peels assisted with high pressure microwave, and had the merits of eco-friendly, excellent photostability and low toxicity. In this work, glycidyl methacrylate was used as a co-polymeric monomer to increase hydroxyl groups on the surface of synthetic materials, which eliminated the interference of biological macromolecules. The specific binding cavities of CDs@RAM-MIPs were formed after removing the template molecule (MNZ). The obtained CDs@RAM-MIPs can selectively capture MNZ through the specific interaction between recognition sites and MNZ, and obey photoinduced electron transfer fluorescence quenching mechanism. The highly sensitive and selective fluorescent sensor based CDs@RAM-MIPs had a wide linear range (50-1200 ng mL-1) and a low detection limit (17.4 ng mL-1) for MNZ. It has been utilized to detect MNZ in serum with recoveries of 93.5%-102.7%, and the relative standards (RSDs) were 1.9%-3.6%, respectively. This work provides a thoughtful strategy for preparation and application of CDs@RAM-MIPs, which presages its great potential for detecting trace compounds in real samples.
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Affiliation(s)
- Haochi Liu
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China
| | - Jie Ding
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Kun Zhang
- Shandong Institute of Non-metallic Materials, Jinan, 250031, China
| | - Lan Ding
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China.
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21
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Magnetic restricted access carbon nanotubes for smooth Cu and Zn extraction from Cu, Zn-superoxide dismutase. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1278-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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22
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Evaluation of molecularly imprinted polymers for chlorpromazine and bromopromazine prepared by multi-step swelling and polymerization method—The application for the determination of chlorpromazine and its metabolites in rat plasma by column-switching LC. J Pharm Biomed Anal 2019; 174:248-255. [DOI: 10.1016/j.jpba.2019.05.063] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 05/25/2019] [Accepted: 05/27/2019] [Indexed: 11/19/2022]
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23
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de Oliveira HL, Pires BC, Teixeira LS, Dinali LAF, Simões NS, Borges WDS, Borges KB. Novel restricted access material combined to molecularly imprinted polymer for selective magnetic solid-phase extraction of estrogens from human urine. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104043] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Wang DD, Gao D, Huang YK, Xu WJ, Xia ZN. Preparation of restricted access molecularly imprinted polymers based fiber for selective solid-phase microextraction of hesperetin and its metabolites in vivo. Talanta 2019; 202:392-401. [DOI: 10.1016/j.talanta.2019.05.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/19/2019] [Accepted: 05/02/2019] [Indexed: 01/09/2023]
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25
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NISHIMURA K, HAGINAKA J. Preparation and Evaluation of Molecularly Imprinted Polymers for Promazine and Chlorpromazine by Multi-step Swelling and Polymerization: the Application for the Determination of Promazine in Rat Serum by Column-switching LC. ANAL SCI 2019; 35:659-664. [DOI: 10.2116/analsci.19p011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kanae NISHIMURA
- Department of Pharmacy, School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women’s University
| | - Jun HAGINAKA
- Department of Pharmacy, School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women’s University
- Institute for Biosciences, Mukogawa Women’s University
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26
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Preparation of Ofloxacin-Restricted Access Media–Molecularly Imprinted Polymers for Its Selective Recognition of Ofloxacin in Milk Samples. Chromatographia 2019. [DOI: 10.1007/s10337-019-03738-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Abrão LCDC, Figueiredo EC. A new restricted access molecularly imprinted fiber for direct solid phase microextraction of benzodiazepines from plasma samples. Analyst 2019; 144:4320-4330. [DOI: 10.1039/c9an00444k] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Restricted access molecularly imprinted polymers (RAMIPs) are hybrid materials that present selective binding sites for a template (or similar molecules), and an external hydrophilic layer that avoids the binding of proteins to the material, making them appropriate for the sample preparation of protein fluids.
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Affiliation(s)
- Lailah Cristina de Carvalho Abrão
- Laboratory of Toxicant and Drug Analyses – LATF
- Gabriel Monteiro da Silva St 700
- Federal University of Alfenas – Unifal-MG
- 37130-000 Alfenas
- Brazil
| | - Eduardo Costa Figueiredo
- Laboratory of Toxicant and Drug Analyses – LATF
- Gabriel Monteiro da Silva St 700
- Federal University of Alfenas – Unifal-MG
- 37130-000 Alfenas
- Brazil
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28
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de Oliveira LL, Suquila FA, de Oliveira FM, Scheel GL, Tarley CR. Synthesis and application of restricted access material-ion imprinted poly(allylthiourea) for selective separation of Cd2+ and humic acid exclusion. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2018.11.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Xu Y, Tang Y, Zhao Y, Gao R, Zhang J, Fu D, Li Z, Li H, Tang X. Bifunctional monomer magnetic imprinted nanomaterials for selective separation of tetracyclines directly from milk samples. J Colloid Interface Sci 2018; 515:18-26. [DOI: 10.1016/j.jcis.2018.01.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/21/2017] [Accepted: 01/01/2018] [Indexed: 11/26/2022]
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30
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de Faria HD, Rosa MA, Silveira AT, Figueiredo EC. Direct extraction of tetracyclines from bovine milk using restricted access carbon nanotubes in a column switching liquid chromatography system. Food Chem 2017; 225:98-106. [DOI: 10.1016/j.foodchem.2017.01.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 12/29/2016] [Accepted: 01/02/2017] [Indexed: 11/16/2022]
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31
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dos Santos RC, Kakazu AK, Santos MG, Belinelli Silva FA, Figueiredo EC. Characterization and application of restricted access carbon nanotubes in online extraction of anticonvulsant drugs from plasma samples followed by liquid chromatography analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1054:50-56. [DOI: 10.1016/j.jchromb.2017.02.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 02/21/2017] [Accepted: 02/24/2017] [Indexed: 11/16/2022]
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32
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Pinto MAL, de Souza ID, Queiroz MEC. Determination of drugs in plasma samples by disposable pipette extraction with C18-BSA phase and liquid chromatography–tandem mass spectrometry. J Pharm Biomed Anal 2017; 139:116-124. [DOI: 10.1016/j.jpba.2017.02.052] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/24/2017] [Accepted: 02/28/2017] [Indexed: 11/16/2022]
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33
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Shah F, Naeemullah, Kazi TG, Khan RA, Sayed M, Afridi HI, Shah KH, Nisar J. Preconcentration of cadmium and manganese in biological samples based on a novel restricted access sorbents. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.12.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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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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35
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de Faria HD, Abrão LCDC, Santos MG, Barbosa AF, Figueiredo EC. New advances in restricted access materials for sample preparation: A review. Anal Chim Acta 2017; 959:43-65. [DOI: 10.1016/j.aca.2016.12.047] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 12/28/2016] [Accepted: 12/30/2016] [Indexed: 11/27/2022]
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36
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Boscari CN, Mazzuia GR, Wisniewski C, Borges KB, Figueiredo EC. Molecularly imprinted probe for solid-phase extraction of hippuric and 4-methylhippuric acids directly from human urine samples followed by MEKC analysis. Electrophoresis 2017; 38:1083-1090. [DOI: 10.1002/elps.201600382] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 12/06/2016] [Accepted: 12/06/2016] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Célio Wisniewski
- Institute of Exact Sciences; Federal University of Alfenas; Alfenas Brazil
| | - Keyller Bastos Borges
- Department of Natural Sciences; Federal University of São João del-Rei; São João del-Rei Brazil
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37
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Arabi M, Ghaedi M, Ostovan A. Water compatible molecularly imprinted nanoparticles as a restricted access material for extraction of hippuric acid, a biological indicator of toluene exposure, from human urine. Mikrochim Acta 2017. [DOI: 10.1007/s00604-016-2063-5] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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38
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Santos MG, Tavares IMC, Barbosa AF, Bettini J, Figueiredo EC. Analysis of tricyclic antidepressants in human plasma using online-restricted access molecularly imprinted solid phase extraction followed by direct mass spectrometry identification/quantification. Talanta 2016; 163:8-16. [PMID: 27886774 DOI: 10.1016/j.talanta.2016.10.047] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 10/07/2016] [Accepted: 10/08/2016] [Indexed: 10/20/2022]
Abstract
The use of a new class of hybrid materials, called restricted access molecularly imprinted polymers (RAMIPs) seems to present a good strategy for the sample preparation of complex matrices, since these materials combine good protein elimination capacity with high degree selectivity. Mass spectrometers (MS) have been successfully used for polar drug identification and quantification. In order to combine the advantages of both RAMIPs and mass spectrometry, we proposed a study that joins these properties in a single system, where we could analyse tricyclic antidepressants from human plasma, without offline extraction or chromatographic separation. A RAMIP for amitriptyline was synthesised by the bulk method, using methacrylic acid as a functional monomer and glycidilmethacrylate as a hydrophilic co-monomer. Then, epoxide ring openings were made and the polymer was covered with bovine serum albumin (BSA). A column filled with RAMIP-BSA was coupled to a MS/MS instrument in an online configuration, using water as loading and reconditioning mobile phase and a 0.01% acetic acid aqueous solution: acetonitrile at 30:70 as elution mobile phase. The system was used for on-line extraction and simultaneous quantification of nortriptyline, desipramine, amitriptyline, imipramine, clomipramine and clomipramine-d3 (IS) (from 15.0 to 500.0μgL-1) from plasma samples. The correlation coefficient was higher than 0.99 for all analytes. The CV (coefficient of variation) values ranged from 1.34% to 19.13% for intra assay precision and 1.32-19.77% for inter assay precision. The E% (relative error) values ranged from -19.15% to 19.51% for intra assay accuracy and from -9.04% to 16.22% for inter assay accuracy.
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Affiliation(s)
- Mariane Gonçalves Santos
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva Street, 37130-000 Alfenas, MG, Brazil.
| | - Isabela Maria Campos Tavares
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva Street, 37130-000 Alfenas, MG, Brazil
| | - Adriano Francisco Barbosa
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva Street, 37130-000 Alfenas, MG, Brazil
| | - Jefferson Bettini
- Brazilian Nanotechnology National Laboratory, 13083-970 Campinas, SP, Brazil
| | - Eduardo Costa Figueiredo
- Toxicants and Drugs Analysis Laboratory - LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, 700 Gabriel Monteiro da Silva Street, 37130-000 Alfenas, MG, Brazil
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39
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Selective molecularly imprinted polymer combined with restricted access material for in-tube SPME/UHPLC-MS/MS of parabens in breast milk samples. Anal Chim Acta 2016; 932:49-59. [DOI: 10.1016/j.aca.2016.05.027] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 05/06/2016] [Accepted: 05/20/2016] [Indexed: 11/19/2022]
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40
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Simultaneous Determination of Eight Tranquilizers in Pork by Ultra-Performance Liquid Chromatography Coupled with Electrospray Tandem Mass Spectrometry. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0591-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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41
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On-line restricted access molecularly imprinted solid phase extraction of ivermectin in meat samples followed by HPLC-UV analysis. Food Chem 2016; 197:7-13. [DOI: 10.1016/j.foodchem.2015.10.082] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 09/04/2015] [Accepted: 10/18/2015] [Indexed: 11/22/2022]
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42
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Xiao D, Liu S, Liang L, Bi Y. Magnetic restricted-access microspheres for extraction of adrenaline, dopamine and noradrenaline from biological samples. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1768-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Direct extraction of lead (II) from untreated human blood serum using restricted access carbon nanotubes and its determination by atomic absorption spectrometry. Talanta 2016; 147:478-84. [DOI: 10.1016/j.talanta.2015.10.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/08/2015] [Accepted: 10/09/2015] [Indexed: 11/23/2022]
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44
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da Silva KKMS, Boralli VB, Wisniewski C, Figueiredo EC. On-Line Restricted Access Molecularly Imprinted Solid-Phase Extraction of Selective Serotonin Reuptake Inhibitors Directly from Untreated Human Plasma Samples Followed by HPLC-UV Analysis. J Anal Toxicol 2015; 40:108-16. [DOI: 10.1093/jat/bkv121] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Sun H, Lai JP, Chen F, Zhu DR. Molecularly imprinted microspheres synthesized by a simple, fast, and universal suspension polymerization for selective extraction of the topical anesthetic benzocaine in human serum and fish tissues. Anal Bioanal Chem 2015; 407:1745-52. [DOI: 10.1007/s00216-014-8420-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Revised: 12/10/2014] [Accepted: 12/15/2014] [Indexed: 11/27/2022]
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46
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Santos MG, Tavares IMC, Boralli VB, Figueiredo EC. Direct doping analysis of beta-blocker drugs from urinary samples by on-line molecularly imprinted solid-phase extraction coupled to liquid chromatography/mass spectrometry. Analyst 2015; 140:2696-703. [DOI: 10.1039/c4an02066a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrophilic layer forms hydrogen bonds with water, minimizing the interference of this solvent in the analyte–polymer complex.
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Affiliation(s)
- Mariane Gonçalves Santos
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
| | - Isabela Maria Campos Tavares
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
| | - Vanessa Bergamin Boralli
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
| | - Eduardo Costa Figueiredo
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
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47
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Santos MG, Moraes GDOI, Nakamura MG, dos Santos-Neto ÁJ, Figueiredo EC. Restricted access molecularly imprinted polymers obtained by bovine serum albumin and/or hydrophilic monomers’ external layers: a comparison related to physical and chemical properties. Analyst 2015; 140:7768-75. [DOI: 10.1039/c5an01482d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RAMIP-BSA is the best material for sample preparation in terms of selectivity, protein exclusion, and adsorption.
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Affiliation(s)
- Mariane Gonçalves Santos
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
| | - Gabriel de Oliveira Isac Moraes
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
| | - Maurício Gustavo Nakamura
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
| | | | - Eduardo Costa Figueiredo
- Toxicants and Drugs Analysis Laboratory – LATF
- Faculty of Pharmaceutical Sciences
- Federal University of Alfenas – Unifal-MG
- Alfenas
- Brazil
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48
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Cheng L, Shen J, Zhang Q, Zhang Y, Zhang S. Simultaneous Determination of Three Tranquillizers in Lamb Liver by Ultra-Performance Liquid Chromatography–Tandem Mass Spectrometry. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-0069-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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49
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The current role of on-line extraction approaches in clinical and forensic toxicology. Bioanalysis 2014; 6:2261-74. [DOI: 10.4155/bio.14.179] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In today's clinical and forensic toxicological laboratories, automation is of interest because of its ability to optimize processes, to reduce manual workload and handling errors and to minimize exposition to potentially infectious samples. Extraction is usually the most time-consuming step; therefore, automation of this step is reasonable. Currently, from the field of clinical and forensic toxicology, methods using the following on-line extraction techniques have been published: on-line solid-phase extraction, turbulent flow chromatography, solid-phase microextraction, microextraction by packed sorbent, single-drop microextraction and on-line desorption of dried blood spots. Most of these published methods are either single-analyte or multicomponent procedures; methods intended for systematic toxicological analysis are relatively scarce. However, the use of on-line extraction will certainly increase in the near future.
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50
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Barbosa AF, Barbosa VMP, Bettini J, Luccas PO, Figueiredo EC. Restricted access carbon nanotubes for direct extraction of cadmium from human serum samples followed by atomic absorption spectrometry analysis. Talanta 2014; 131:213-20. [PMID: 25281095 DOI: 10.1016/j.talanta.2014.07.051] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 07/17/2014] [Accepted: 07/20/2014] [Indexed: 10/25/2022]
Abstract
In this paper, we propose a new sorbent that is able to extract metal ions directly from untreated biological fluids, simultaneously excluding all proteins from these samples. The sorbent was obtained through the modification of carbon nanotubes (CNTs) with an external bovine serum albumin (BSA) layer, resulting in restricted access carbon nanotubes (RACNTs). The BSA layer was fixed through the interconnection between the amine groups of the BSA using glutaraldehyde as cross-linker. When a protein sample is percolated through a cartridge containing RACNTs and the sample pH is higher than the isoelectric point of the proteins, both proteins from the sample and the BSA layer are negatively ionized. Thus, an electrostatic repulsion prevents the interaction between the proteins from the sample on the RACNTs surface. At the same time, metal ions are adsorbed in the CNTs (core) after their passage through the chains of proteins. The Cd(2+) ion was selected for a proof-of-principle case to test the suitability of the RACNTs due to its toxicological relevance. RACNTs were able to extract Cd(2+) and exclude almost 100% of the proteins from the human serum samples in an online solid-phase extraction system coupled with thermospray flame furnace atomic absorption spectrometry. The limits of detection and quantification were 0.24 and 0.80 μg L(-1), respectively. The sampling frequency was 8.6h(-1), and the intra- and inter-day precisions at the 0.80, 15.0, and 30.0 μg L(-1) Cd(2+) levels were all lower than 10.1% (RSD). The recoveries obtained for human blood serum samples fortified with Cd(2+) ranged from 85.0% to 112.0%. The method was successfully applied to analyze Cd(2+) directly from six human blood serum samples without any pretreatment, and the observed concentrations ranged from <LOQ to 2.52 µg L(-1).
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Affiliation(s)
- Adriano F Barbosa
- Laboratory of Toxicant and Drug Analysis - LATF, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000 Alfenas, MG, Brazil; Institute of Chemistry, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000 Alfenas, MG, Brazil
| | - Valéria M P Barbosa
- Laboratory of Toxicant and Drug Analysis - LATF, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000 Alfenas, MG, Brazil; Institute of Chemistry, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000 Alfenas, MG, Brazil
| | - Jefferson Bettini
- Brazilian Nanotechnology National Laboratory, 13083-970 Campinas, SP, Brazil
| | - Pedro O Luccas
- Institute of Chemistry, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000 Alfenas, MG, Brazil
| | - Eduardo C Figueiredo
- Laboratory of Toxicant and Drug Analysis - LATF, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000 Alfenas, MG, Brazil.
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