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Arcangeli D, Gualandi I, Mariani F, Tessarolo M, Ceccardi F, Decataldo F, Melandri F, Tonelli D, Fraboni B, Scavetta E. Smart Bandaid Integrated with Fully Textile OECT for Uric Acid Real-Time Monitoring in Wound Exudate. ACS Sens 2023; 8:1593-1608. [PMID: 36929744 PMCID: PMC10152490 DOI: 10.1021/acssensors.2c02728] [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: 03/18/2023]
Abstract
Hard-to-heal wounds (i.e., severe and/or chronic) are typically associated with particular pathologies or afflictions such as diabetes, immunodeficiencies, compression traumas in bedridden people, skin grafts, or third-degree burns. In this situation, it is critical to constantly monitor the healing stages and the overall wound conditions to allow for better-targeted therapies and faster patient recovery. At the moment, this operation is performed by removing the bandages and visually inspecting the wound, putting the patient at risk of infection and disturbing the healing stages. Recently, new devices have been developed to address these issues by monitoring important biomarkers related to the wound health status, such as pH, moisture, etc. In this contribution, we present a novel textile chemical sensor exploiting an organic electrochemical transistor (OECT) configuration based on poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) for uric acid (UA)-selective monitoring in wound exudate. The combination of special medical-grade textile materials provides a passive sampling system that enables the real-time and non-invasive analysis of wound fluid: UA was detected as a benchmark analyte to monitor the health status of wounds since it represents a relevant biomarker associated with infections or necrotization processes in human tissues. The sensors proved to reliably and reversibly detect UA concentration in synthetic wound exudate in the biologically relevant range of 220-750 μM, operating in flow conditions for better mimicking the real wound bed. This forerunner device paves the way for smart bandages integrated with real-time monitoring OECT-based sensors for wound-healing evaluation.
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Affiliation(s)
- Danilo Arcangeli
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Isacco Gualandi
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Federica Mariani
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Marta Tessarolo
- Department of Physics and Astronomy "Augusto Righi", University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy
| | - Francesca Ceccardi
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Francesco Decataldo
- Department of Physics and Astronomy "Augusto Righi", University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy
| | - Federico Melandri
- Plastod S.p.A., Via Walter Masetti 7, Calderara di Reno, 40012 Bologna, Italy
| | - Domenica Tonelli
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Beatrice Fraboni
- Department of Physics and Astronomy "Augusto Righi", University of Bologna, Viale Berti Pichat 6/2, 40127 Bologna, Italy
| | - Erika Scavetta
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
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2
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de Ruette N, Wolf M, Giacomozzi L, Alexander JD, Gatchell M, Stockett MH, Haag N, Zettergren H, Schmidt HT, Cederquist H. DESIREE electrospray ion source test bench and setup for collision induced dissociation experiments. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:075102. [PMID: 30068131 DOI: 10.1063/1.5030528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this paper, we give a detailed description of an electrospray ion source test bench and a single-pass setup for ion fragmentation studies at the Double ElectroStatic Ion Ring ExpEriment infrastructure at Stockholm University. This arrangement allows for collision-induced dissociation experiments at the center-of-mass energies between 10 eV and 1 keV. Charged fragments are analyzed with respect to their kinetic energies (masses) by means of an electrostatic energy analyzer with a wide angular acceptance and adjustable energy resolution.
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Affiliation(s)
- N de Ruette
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - M Wolf
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - L Giacomozzi
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - J D Alexander
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - M Gatchell
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - M H Stockett
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - N Haag
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - H Zettergren
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - H T Schmidt
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - H Cederquist
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
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3
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Studzińska S, Siecińska L, Buszewski B. On-line electrochemistry/electrospray ionization mass spectrometry (EC-ESI-MS) system for the study of nucleosides and nucleotides oxidation products. J Pharm Biomed Anal 2018; 158:416-424. [PMID: 29945058 DOI: 10.1016/j.jpba.2018.06.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/11/2018] [Accepted: 06/17/2018] [Indexed: 11/25/2022]
Abstract
The main aim of present investigation was to study the oxidation products of nucleosides and nucleotides with the use of on-line electrochemistry/electrospray ionization mass spectrometry (EC-ESI-MS) system. The conditions applied in the system were optimized in complex manner, involving study of the impact of working electrodes or sample solvent on the oxidation of tested compounds and their ionization in mass spectrometry. Finally 5 mM of ammonium acetate was used selected and pH 3 was used for positive ionization mode, while pH 7 was applied for negative ionization in mass spectrometry. It was shown that utilization of both ionization modes is indispensable in order to detect and identify all of oxidation products. Furthermore the identification of compounds obtained using the EC-ESI-MS system was done and results were compared with known metabolites of studied compounds. These products are associated with specific disease states, or may be a potential metabolites. Moreover the analysis of urine samples by liquid chromatography coupled with mass spectrometry confirmed the possibility of using EC-ESI-MS technique to simulate the metabolism of nucleosides and nucleotides, since the oxidation products have also been identified in urine samples.
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Affiliation(s)
- Sylwia Studzińska
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń.
| | - Lena Siecińska
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń
| | - Bogusław Buszewski
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń
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4
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Villa JE, Pasquini C, Poppi RJ. Coupling of the ring-oven-based preconcentration technique and surface-enhanced Raman spectroscopy: Application for the determination of purine bases in DNA. Anal Chim Acta 2017; 991:95-103. [DOI: 10.1016/j.aca.2017.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/28/2017] [Accepted: 08/01/2017] [Indexed: 01/13/2023]
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5
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Portychová L, Schug KA. Instrumentation and applications of electrochemistry coupled to mass spectrometry for studying xenobiotic metabolism: A review. Anal Chim Acta 2017; 993:1-21. [PMID: 29078951 DOI: 10.1016/j.aca.2017.08.050] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 08/21/2017] [Accepted: 08/26/2017] [Indexed: 01/03/2023]
Abstract
The knowledge of metabolic pathways and biotransformation of xenobiotics, artificial substances foreign to the entire biological system, is crucial for elucidation of degradation routes of potentially toxic substances. Nowadays, there are many methods to simulate xenobiotic metabolism in the human body in vitro. In this review, the metabolism of various substances in the human body is described, followed by a summary of methods used for prediction of metabolic pathways and biotransformation. Above all, focus is placed on the coupling of electrochemistry to mass spectrometry, which is still a relatively new technique. This promising tool can mimic both oxidative phase I and conjugative phase II metabolism. Different experimental arrangements, with or without a separation step, and various applications of this technique are illustrated and critically reviewed.
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Affiliation(s)
- Lenka Portychová
- Research Institute for Organic Synthesis, Inc., 533 54 Rybitví, Czech Republic; Department of Analytical Chemistry, Palacký University, 771 46 Olomouc, Czech Republic
| | - Kevin A Schug
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA.
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6
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Yuill EM, Baker LA. Electrochemical Aspects of Mass Spectrometry: Atmospheric Pressure Ionization and Ambient Ionization for Bioanalysis. ChemElectroChem 2017. [DOI: 10.1002/celc.201600751] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Elizabeth M. Yuill
- Department of Chemistry; Indiana University; 800 E. Kirkwood Avenue Bloomington, Indiana 47405 USA
| | - Lane A. Baker
- Department of Chemistry; Indiana University; 800 E. Kirkwood Avenue Bloomington, Indiana 47405 USA
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7
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Looi WD, Chamand L, Brown B, Brajter-Toth A. Role of Electrochemistry in Desorption Ionization Mass Spectrometry (LS DESI MS) of Aqueous Samples Containing Electrolyte Salts. Anal Chem 2016; 89:603-610. [DOI: 10.1021/acs.analchem.6b02406] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Wen Donq Looi
- Department
of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Laura Chamand
- Faculty
of Chemistry, University of Strasbourg, 1 Rue Blasie Pascal, 67008 Strasbourg, France
| | - Blake Brown
- Department
of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Anna Brajter-Toth
- Department
of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
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8
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Arthur KL, Eiceman GA, Reynolds JC, Creaser CS. Analysis of Supramolecular Complexes of 3-Methylxanthine with Field Asymmetric Waveform Ion Mobility Spectrometry Combined with Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:800-809. [PMID: 26914231 DOI: 10.1007/s13361-016-1351-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/22/2016] [Accepted: 01/23/2016] [Indexed: 06/05/2023]
Abstract
Miniaturised field asymmetric waveform ion mobility spectrometry (FAIMS), combined with mass spectrometry (MS), has been applied to the study of self-assembling, noncovalent supramolecular complexes of 3-methylxanthine (3-MX) in the gas phase. 3-MX forms stable tetrameric complexes around an alkali metal (Na(+), K(+)) or ammonium cation, to generate a diverse array of complexes with single and multiple charge states. Complexes of (3-MX)n observed include: singly charged complexes where n = 1-8 and 12 and doubly charged complexes where n = 12-24. The most intense ions are those associated with multiples of tetrameric units, where n = 4, 8, 12, 16, 20, 24. The effect of dispersion field on the ion intensities of the self-assembled complexes indicates some fragmentation of higher order complexes within the FAIMS electrodes (in-FAIMS dissociation), as well as in-source collision induced dissociation within the mass spectrometer. FAIMS-MS enables charge state separation of supramolecular complexes of 3-MX and is shown to be capable of separating species with overlapping mass-to-charge ratios. FAIMS selected transmission also results in an improvement in signal-to-noise ratio for low intensity complexes and enables the visualization of species undetectable without FAIMS.
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Affiliation(s)
- Kayleigh L Arthur
- Center for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
| | - Gary A Eiceman
- Center for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK
- Department of Chemistry and Biochemistry, New Mexico State University, MSC 3C, P.O. Box 3001, Las Cruces, NM, 88003-8001, USA
| | - James C Reynolds
- Center for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK.
| | - Colin S Creaser
- Center for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, LE11 3TU, UK.
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9
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Kummer S, Ruth W, Kragl U. Electrochemical Initiated C-N Coupling of 3-Methylcatechol and n
-Hexylamine in a Flow Cell Monitored with ESI-MS. ELECTROANAL 2016. [DOI: 10.1002/elan.201600035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sina Kummer
- Institute of Chemistry; University of Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - Wolfgang Ruth
- Institute of Chemistry; University of Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
| | - Udo Kragl
- Institute of Chemistry; University of Rostock; Albert-Einstein-Str. 3a 18059 Rostock Germany
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10
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Tu LY, Pi J, Jin H, Cai JY, Deng SP. Synthesis, characterization and anticancer activity of kaempferol-zinc(II) complex. Bioorg Med Chem Lett 2016; 26:2730-4. [PMID: 27080177 DOI: 10.1016/j.bmcl.2016.03.091] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 03/11/2016] [Accepted: 03/25/2016] [Indexed: 10/22/2022]
Abstract
According to the previous studies, the anticancer activity of flavonoids could be enhanced when they are coordinated with transition metal ions. In this work, kaempferol-zinc(II) complex (kaempferol-Zn) was synthesized and its chemical properties were characterized by UV-VIS, FT-IR, (1)H NMR, elemental analysis, electrospray mass spectrometry (ES-MS) and fluorescence spectroscopy, which showed that the synthesized complex was coordinated with a Zn(II) ion via the 3-OH and 4-oxo groups. The anticancer effects of kaempferol-Zn and free kaempferol on human oesophageal cancer cell line (EC9706) were compared. MTT results demonstrated that the killing effect of kaempferol-Zn was two times higher than that of free kaempferol. Atomic force microscopy (AFM) showed the morphological and ultrastructural changes of cellular membrane induced by kaempferol-Zn at subcellular or nanometer level. Moreover, flow cytometric analysis indicated that kaempferol-Zn could induce apoptosis in EC9706 cells by regulating intracellular calcium ions. Collectively, all the data showed that kaempferol-Zn might be served as a kind of potential anticancer agent.
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Affiliation(s)
- Lv-Ying Tu
- Department of Chemistry, Jinan University, Guangzhou 510632, PR China
| | - Jiang Pi
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 000853, PR China
| | - Hua Jin
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 000853, PR China
| | - Ji-Ye Cai
- Department of Chemistry, Jinan University, Guangzhou 510632, PR China; State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 000853, PR China
| | - Sui-Ping Deng
- Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
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11
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Gutiérrez A, Gutierrez FA, Eguílaz M, González-Domínguez JM, Hernández-Ferrer J, Ansón-Casaos A, Martínez MT, Rivas GA. Electrochemical sensing of guanine, adenine and 8-hydroxy-2′-deoxyguanosine at glassy carbon modified with single-walled carbon nanotubes covalently functionalized with lysine. RSC Adv 2016. [DOI: 10.1039/c5ra22556f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis and characterization of l-lysine covalently functionalized SWCNT and analytical application for the highly sensitive quantification of guanine, adenine and 8-hydroxy-2′-deoxyguanosine.
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Affiliation(s)
- Alejandro Gutiérrez
- INFIQC
- Departamento de Físico Química
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Fabiana A. Gutierrez
- INFIQC
- Departamento de Físico Química
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | - Marcos Eguílaz
- INFIQC
- Departamento de Físico Química
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
| | | | | | | | | | - Gustavo A. Rivas
- INFIQC
- Departamento de Físico Química
- Facultad de Ciencias Químicas
- Universidad Nacional de Córdoba
- Ciudad Universitaria
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12
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Liu YM, Perry RH. Paper-Based Electrochemical Cell Coupled to Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:1702-1712. [PMID: 26311335 DOI: 10.1007/s13361-015-1224-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 06/04/2023]
Abstract
On-line coupling of electrochemistry (EC) to mass spectrometry (MS) is a powerful approach for identifying intermediates and products of EC reactions in situ. In addition, EC transformations have been used to increase ionization efficiency and derivatize analytes prior to MS, improving sensitivity and chemical specificity. Recently, there has been significant interest in developing paper-based electroanalytical devices as they offer convenience, low cost, versatility, and simplicity. This report describes the development of tubular and planar paper-based electrochemical cells (P-EC) coupled to sonic spray ionization (SSI) mass spectrometry (P-EC/SSI-MS). The EC cells are composed of paper sandwiched between two mesh stainless steel electrodes. Analytes and reagents can be added directly to the paper substrate along with electrolyte, or delivered via the SSI microdroplet spray. The EC cells are decoupled from the SSI source, allowing independent control of electrical and chemical parameters. We utilized P-EC/SSI-MS to characterize various EC reactions such as oxidations of cysteine, dopamine, polycyclic aromatic hydrocarbons, and diphenyl sulfide. Our results show that P-EC/SSI-MS has the ability to increase ionization efficiency, to perform online EC transformations, and to capture intermediates of EC reactions with a response time on the order of hundreds of milliseconds. The short response time allowed detection of a deprotonated diphenyl sulfide intermediate, which experimentally confirms a previously proposed mechanism for EC oxidation of diphenyl sulfide to pseudodimer sulfonium ion. This report introduces paper-based EC/MS via development of two device configurations (tubular and planar electrodes), as well as discusses the capabilities, performance, and limitations of the technique.
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Affiliation(s)
- Yao-Min Liu
- Department of Chemistry, University of Illinois, Urbana, IL, 61801, USA
| | - Richard H Perry
- Department of Chemistry, University of Illinois, Urbana, IL, 61801, USA.
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13
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Iftikhar I, Brajter-Toth A. Solution or Gas Phase? Oxidation and Radical Formation in Electrospray Ionization Mass Spectrometry (ESI MS). ELECTROANAL 2015. [DOI: 10.1002/elan.201500297] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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14
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Oberacher H, Pitterl F, Erb R, Plattner S. Mass spectrometric methods for monitoring redox processes in electrochemical cells. MASS SPECTROMETRY REVIEWS 2015; 34:64-92. [PMID: 24338642 PMCID: PMC4286209 DOI: 10.1002/mas.21409] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 07/24/2013] [Accepted: 08/12/2013] [Indexed: 06/03/2023]
Abstract
Electrochemistry (EC) is a mature scientific discipline aimed to study the movement of electrons in an oxidation-reduction reaction. EC covers techniques that use a measurement of potential, charge, or current to determine the concentration or the chemical reactivity of analytes. The electrical signal is directly converted into chemical information. For in-depth characterization of complex electrochemical reactions involving the formation of diverse intermediates, products and byproducts, EC is usually combined with other analytical techniques, and particularly the hyphenation of EC with mass spectrometry (MS) has found broad applicability. The analysis of gases and volatile intermediates and products formed at electrode surfaces is enabled by differential electrochemical mass spectrometry (DEMS). In DEMS an electrochemical cell is sampled with a membrane interface for electron ionization (EI)-MS. The chemical space amenable to EC/MS (i.e., bioorganic molecules including proteins, peptides, nucleic acids, and drugs) was significantly increased by employing electrospray ionization (ESI)-MS. In the simplest setup, the EC of the ESI process is used to analytical advantage. A limitation of this approach is, however, its inability to precisely control the electrochemical potential at the emitter electrode. Thus, particularly for studying mechanistic aspects of electrochemical processes, the hyphenation of discrete electrochemical cells with ESI-MS was found to be more appropriate. The analytical power of EC/ESI-MS can further be increased by integrating liquid chromatography (LC) as an additional dimension of separation. Chromatographic separation was found to be particularly useful to reduce the complexity of the sample submitted either to the EC cell or to ESI-MS. Thus, both EC/LC/ESI-MS and LC/EC/ESI-MS are common.
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Affiliation(s)
- Herbert Oberacher
- Institute of Legal Medicine and Core Facility Metabolomics, Innsbruck Medical UniversityInnsbruck, Austria
| | - Florian Pitterl
- Institute of Legal Medicine and Core Facility Metabolomics, Innsbruck Medical UniversityInnsbruck, Austria
| | - Robert Erb
- Institute of Legal Medicine and Core Facility Metabolomics, Innsbruck Medical UniversityInnsbruck, Austria
| | - Sabine Plattner
- Institute of Legal Medicine and Core Facility Metabolomics, Innsbruck Medical UniversityInnsbruck, Austria
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15
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Looi DW, Iftikhar I, Brajter-Toth A. Electrochemical Attributes of Electrochemistry in Tandem with Electrospray Mass Spectrometry. ELECTROANAL 2014. [DOI: 10.1002/elan.201300426] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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16
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Frańska M. Inosine octamer stabilized by alkali earth metal cations - as studied by electrospray ionization mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2014; 20:249-253. [PMID: 24892295 DOI: 10.1255/ejms.1276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
By using electrospray ionization mass spectrometry, inosine was found to be able to form an octamer stabilized by alkali earth metal cation, namely Ca(2+), Sr(2+) and Ba(2+), of which the most stable is that stabilized by Ca(2+) (ion [I8+Ca](2+)). It was established that 9-methylhypoxanthine (M) did not form an analogical octamer, since ion [M8+Ca](2+) was not detected. On the other hand, 9-methylhypoxanthine can form "mixed" octamers together with inosine (ions [InMm+Ca](2+), n + m = 8, were detected).
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Affiliation(s)
- Magdalena Frańska
- Poznań University of Technology, Institute of Chemistry, Piotrowo 3, 60-965 Poznań, Poland.
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17
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Simulation of oxidative stress of guanosine and 8-oxo-7,8-dihydroguanosine by electrochemically assisted injection–capillary electrophoresis–mass spectrometry. Anal Bioanal Chem 2013; 406:687-94. [DOI: 10.1007/s00216-013-7500-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 11/06/2013] [Accepted: 11/08/2013] [Indexed: 11/26/2022]
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18
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Jahn S, Karst U. Electrochemistry coupled to (liquid chromatography/) mass spectrometry—Current state and future perspectives. J Chromatogr A 2012; 1259:16-49. [DOI: 10.1016/j.chroma.2012.05.066] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 05/09/2012] [Accepted: 05/19/2012] [Indexed: 02/04/2023]
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19
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Erb R, Plattner S, Pitterl F, Brouwer HJ, Oberacher H. An optimized electrochemistry-liquid chromatography-mass spectrometry method for studying guanosine oxidation. Electrophoresis 2012; 33:614-21. [PMID: 22451054 PMCID: PMC3474898 DOI: 10.1002/elps.201100406] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Oxidative stress can disrupt the integrity of genetic material. Due to its importance in the pathogenesis of different kinds of disease, including neurodegenerative disease, cardiovascular disease and cancer, major efforts are put into the elucidation of mechanisms involved. Herein, the combination of electrochemistry/liquid chromatography/mass spectrometry (EC/LC/MS) is presented as convenient, fast and simple method to study nucleic acids oxidation. Guanosine was selected as test compound. 8-Hydroxyguanosine and (guanosine-H)2 were identified as primary oxidation products. Oxidation was accomplished in an electrochemical thin-layer cell integrated in the flow path of the autosampler of the chromatographic system. The reaction mixture was separated and mass analyzed by LC/MS. The use of LC was found to be particularly beneficial to resolve isobaric oxidation products. Another advantage of the setup used was the ability to decouple the electrochemical cell and the electrospray ionization source from each other eliminating any kind of cell potential interaction. Separation of EC from LC/MS, furthermore, facilitates method optimization. Experimental parameters were optimized for both techniques independently. Highest yields and best detectability of oxidation products were obtained with 10 mM ammonium formate at physiological pH delivered at a flow rate of 2.5-5 μL/min through the electrochemical cell.
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Affiliation(s)
- Robert Erb
- Institute of Legal Medicine, Innsbruck Medical University, Innsbruck, Austria
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Karady M, Novák O, Horna A, Strnad M, Doležal K. High Performance Liquid Chromatography-Electrochemistry-Electrospray Ionization Mass Spectrometry (HPLC/EC/ESI-MS) for Detection and Characterization of Roscovitine Oxidation Products. ELECTROANAL 2011. [DOI: 10.1002/elan.201100383] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hongo Y, Li B, Suzuki K, Nakamura T. An unexpected [M+I](+) ion formation in phosphasilene compounds detection by electrospray ionization mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2011; 46:956-959. [PMID: 21915961 DOI: 10.1002/jms.1975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Electrochemistry-electrospray ionization FT ICR mass spectrometry (EC ESI MS) of guanine–tyrosine and guanine–glutathione crosslinks formed on-line. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2010.12.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Structural characterization by infrared multiple photon dissociation spectroscopy of protonated gas-phase ions obtained by electrospray ionization of cysteine and dopamine. Anal Bioanal Chem 2011; 399:2463-73. [DOI: 10.1007/s00216-010-4582-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 12/03/2010] [Accepted: 12/06/2010] [Indexed: 01/23/2023]
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Pitterl F, Chervet JP, Oberacher H. Electrochemical simulation of oxidation processes involving nucleic acids monitored with electrospray ionization-mass spectrometry. Anal Bioanal Chem 2010; 397:1203-15. [PMID: 20393841 DOI: 10.1007/s00216-010-3674-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Revised: 03/18/2010] [Accepted: 03/21/2010] [Indexed: 02/03/2023]
Abstract
Oxidation is commonly involved in the alteration of nucleic acids giving rise to diverse effects including mutation, cell death, malignancy, and aging. We demonstrate that electrochemistry represents an efficient and fast method to mimic oxidative modification of nucleic acids occurring in biological systems. Oxidation reactions were performed in a thin-layer cell employing a conductive diamond electrode as the working electrode and were monitored with electrospray ionization-mass spectrometry. Mass voltammograms were acquired for guanosine, adenosine, cytidine, and uridine. The observed oxidation potentials increased in the order guanosine << adenosine < cytidine < uridine. Oxidation products of guanosine were characterized using high-resolution (tandem) mass spectrometry performed with a quadrupole-quadrupole time-of-flight instrument. On the basis of these experiments, it was concluded that the initial electrode reaction involves a one-electron, one-proton step to give a free radical. The primary oxidation product represents the starting point for a number of follow-up reactions, including guanosine dimerization as well as further oxidation to 8-hydroxyguanosine. Similar results were obtained for guanosine monophosphate and the corresponding dinucleotide. Furthermore, the guanosine radical was identified as an important intermediate for the formation of a covalent adduct with acetaminophen. This observation sheds new light on the mechanism of adduct formation as it demonstrates that oxidative activation of both the nucleobase and the adduct-forming agent is necessary to observe a detectable amount of adduct species.
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Affiliation(s)
- Florian Pitterl
- Institute of Legal Medicine, Innsbruck Medical University, Muellerstrasse 44, 6020 Innsbruck, Austria
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Baumann A, Karst U. Online electrochemistry/mass spectrometry in drug metabolism studies: principles and applications. Expert Opin Drug Metab Toxicol 2010; 6:715-31. [DOI: 10.1517/17425251003713527] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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