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Kemperman RH, Ganetzky RD, Master SR. Development and validation of a multiplexed LC-MS/MS ketone body assay for clinical diagnostics. J Mass Spectrom Adv Clin Lab 2024; 31:49-58. [PMID: 38375486 PMCID: PMC10874984 DOI: 10.1016/j.jmsacl.2024.01.004] [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: 08/21/2023] [Revised: 12/27/2023] [Accepted: 01/22/2024] [Indexed: 02/21/2024] Open
Abstract
Objectives Ketone bodies (KBs) serve as important energy sources that spare glucose, providing the primary energy for cardiac muscle, skeletal muscle during aerobic exercise, and the brain during periods of catabolism. The levels and relationships between the KBs are critical indicators of metabolic health and disease. However, challenges in separating isomeric KBs and concerns about sample stability have previously limited their clinical measurement. Methods A novel 6.5-minute liquid chromatography-mass spectrometry-based assay was developed, enabling the precise measurement of alpha-, beta- and gamma-hydroxybutyrate, beta-hydroxyisobutyrate, and acetoacetate. This method was fully validated for human serum and plasma samples by investigating extraction efficiency, matrix effects, accuracy, recovery, intra- and inter-precision, linearity, lower limit of quantitation (LLOQ), carryover, specificity, stability, and more. From 107 normal samples, reference ranges were established for all analytes and the beta-hydroxybutyrate/acetoacetate ratio. Results All five analytes were adequately separated chromatographically. An extraction efficiency between 80 and 120 % was observed for all KBs. Accuracy was evaluated through spike and recovery using 10 random patient samples, with an average recovery of 85-115 % for all KBs and a coefficient of variation of ≤ 3 %. Coefficients of variation for intra- and inter-day imprecision were < 5 %, and the total imprecision was < 10 %. No significant interferences were observed. Specimens remained stable for up to 6 h on ice or 2 h at room temperature. Conclusions The developed method is highly sensitive and robust. It has been validated for use with human serum and plasma, overcoming stability concerns and providing a reliable and efficient quantitative estimation of ketone bodies.
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Affiliation(s)
| | - Rebecca D. Ganetzky
- Children’s Hospital of Philadelphia, PA, United States
- Perelman School of Medicine, University of Pennsylvania, PA, United States
| | - Stephen R. Master
- Children’s Hospital of Philadelphia, PA, United States
- Perelman School of Medicine, University of Pennsylvania, PA, United States
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2
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Dugheri S, Cappelli G, Fanfani N, Ceccarelli J, Marrubini G, Squillaci D, Traversini V, Gori R, Mucci N, Arcangeli G. A New Perspective on SPME and SPME Arrow: Formaldehyde Determination by On-Sample Derivatization Coupled with Multiple and Cooling-Assisted Extractions. Molecules 2023; 28:5441. [PMID: 37513313 PMCID: PMC10383053 DOI: 10.3390/molecules28145441] [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: 06/16/2023] [Revised: 07/10/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
Formaldehyde (FA) is a toxic compound and a human carcinogen. Regulating FA-releasing substances in commercial goods is a growing and interesting topic: worldwide production sectors, like food industries, textiles, wood manufacture, and cosmetics, are involved. Thus, there is a need for sensitive, economical, and specific FA monitoring tools. Solid-phase microextraction (SPME), with O-(2,3,4,5,6-pentafluorobenzyl)-hydroxylamine (PFBHA) on-sample derivatization and gas chromatography, is proposed for FA monitoring of real-life samples. This study reports the use of polydimethylsiloxane (PDMS) as a sorbent phase combined with innovative commercial methods, such as multiple SPME (MSPME) and cooling-assisted SPME, for FA determination. Critical steps, such as extraction and sampling, were evaluated in method development. The derivatization was performed at 60 °C for 30 min, followed by 15 min sampling at 10 °C, in three cycles (SPME Arrow) or six cycles (SPME). The sensitivity was satisfactory for the method's purposes (LOD-LOQ at 11-36 ng L-1, and 8-26 ng L-1, for SPME and SPME Arrow, respectively). The method's linearity ranges from the lower LOQ at trace level (ng L-1) to the upper LOQ at 40 mg L-1. The precision range was 5.7-10.2% and 4.8-9.6% and the accuracy was 97.4% and 96.3% for SPME and SPME Arrow, respectively. The cooling MSPME set-up applied to real commercial goods provided results of quality comparable to previously published data.
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Affiliation(s)
- Stefano Dugheri
- Industrial Hygiene and Toxicology Laboratory, University Hospital Careggi, 50134 Florence, Italy
| | - Giovanni Cappelli
- Department of Experimental and Clinical Medicine, University of Florence, 50121 Florence, Italy
| | - Niccolò Fanfani
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, 50121 Florence, Italy
| | - Jacopo Ceccarelli
- Department of Experimental and Clinical Medicine, University of Florence, 50121 Florence, Italy
| | - Giorgio Marrubini
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Donato Squillaci
- Department of Experimental and Clinical Medicine, University of Florence, 50121 Florence, Italy
| | - Veronica Traversini
- Department of Experimental and Clinical Medicine, University of Florence, 50121 Florence, Italy
| | - Riccardo Gori
- Department of Civil and Environmental Engineering, University of Florence, 50121 Florence, Italy
| | - Nicola Mucci
- Department of Experimental and Clinical Medicine, University of Florence, 50121 Florence, Italy
| | - Giulio Arcangeli
- Department of Experimental and Clinical Medicine, University of Florence, 50121 Florence, Italy
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3
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Vahabi M, Ebrahimzadeh H, Zendehdel R, Jalilian N, Khodakarim S. Selective Determination of n-Hexane and Methyl Ethyl Ketone (MEK) in Urine by Magnetic-Silica Aerogel-Based Molecularly Imprinted Polymers (MIPs) with Gas Chromatography – Flame Ionization Detection (GC-FID). ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2128364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Masoomeh Vahabi
- Department of Occupational Health and Safety Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Homeira Ebrahimzadeh
- Department of Analytical Chemistry and Pollutants, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, Tehran, Iran
| | - Rezvan Zendehdel
- Department of Occupational Health and Safety Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Niloofar Jalilian
- Department of Analytical Chemistry and Pollutants, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, Tehran, Iran
| | - Soheila Khodakarim
- Department of Biostatistics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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4
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Low-Dose Benzene Exposure Monitoring of Oil Refinery Workers: Inhalation and Biomarkers. ATMOSPHERE 2022. [DOI: 10.3390/atmos13030450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Airborne benzene in workplaces has progressively decreased due to preventive actions and the redesigning of facility processes. Professionals who assess occupational exposure should select techniques to detect benzene levels comparable to ambient air exposure. Thus, sensitive biomarkers are needed to discriminate the effects of confounding factors, such as smoking or sorbic acid (SA). In order to identify sensitive biomarkers and to study their correlation with confounding factors, 23 oil refinery workers were enrolled in the study; their airborne benzene exposures and biomarkers were monitored. Urinary benzene (U-B), t,t-muconic acid (t,t-MA), and S-phenylmercapturic acid (SPMA) were quantified. Urinary cotinine (U-C) and t,t-sorbic acid (t,t-SA) were evaluated to flag smoking and SA intake, respectively. The benzene measured in personal inhalation sampling ranged from 0.6 to 83.5 (median 1.7) µg/m3. The concentration range of the biomarkers, U-B, t,t-MA, and SPMA, were 18–4893 ng/m3, <10–79.4 µg/g creatinine, and <0.5–3.96 µg/g creatinine, respectively. Pearson tests were carried out; the best correlations were between airborne benzene and U-B (µg/L r = 0.820, p < 0.001) and between benzene and SPMA (g/L r = 0.812, p < 0.001), followed by benzene and t,t-MA (mg/L r = 0.465, p = 0.039). From our study, U-B and SPMA result to be the most reliable biomarkers to assess the internal number of low doses of benzene exposure, thanks to their specificity and sensitivity.
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Dugheri S, Mucci N, Cappelli G, Trevisani L, Bonari A, Bucaletti E, Squillaci D, Arcangeli G. Advanced Solid-Phase Microextraction Techniques and Related Automation: A Review of Commercially Available Technologies. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2022; 2022:8690569. [PMID: 35154846 PMCID: PMC8837452 DOI: 10.1155/2022/8690569] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/05/2022] [Accepted: 01/07/2022] [Indexed: 06/14/2023]
Abstract
The solid-phase microextraction (SPME), invented by Pawliszyn in 1989, today has a renewed and growing use and interest in the scientific community with fourteen techniques currently available on the market. The miniaturization of traditional sample preparation devices fulfills the new request of an environmental friendly analytical chemistry. The recent upswing of these solid-phase microextraction technologies has brought new availability and range of robotic automation. The microextraction solutions propose today on the market can cover a wide variety of analytical fields and applications. This review reports on the state-of-the-art innovative solid-phase microextraction techniques, especially those used for chromatographic separation and mass-spectrometric detection, given the recent improvements in availability and range of automation techniques. The progressively implemented solid-phase microextraction techniques and related automated commercially available devices are classified and described to offer a valuable tool to summarize their potential combinations to face all the laboratories requirements in terms of analytical applications, robustness, sensitivity, and throughput.
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Affiliation(s)
- Stefano Dugheri
- Industrial Hygiene and Toxicology Laboratory, University Hospital Careggi, Florence, Italy
| | - Nicola Mucci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Giovanni Cappelli
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Lucia Trevisani
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | | | - Elisabetta Bucaletti
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Donato Squillaci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Giulio Arcangeli
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
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6
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Wijngaard R, Perramón M, Parra-Robert M, Hidalgo S, Butrico G, Morales-Ruiz M, Zeng M, Casals E, Jiménez W, Fernández-Varo G, Shulman GI, Cline GW, Casals G. Validation of a Gas Chromatography-Mass Spectrometry Method for the Measurement of the Redox State Metabolic Ratios Lactate/Pyruvate and β-Hydroxybutyrate/Acetoacetate in Biological Samples. Int J Mol Sci 2021; 22:4752. [PMID: 33946157 PMCID: PMC8125771 DOI: 10.3390/ijms22094752] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/20/2021] [Accepted: 04/27/2021] [Indexed: 02/06/2023] Open
Abstract
The metabolic ratios lactate/pyruvate and β-hydroxybutyrate/acetoacetate are considered valuable tools to evaluate the in vivo redox cellular state by estimating the free NAD+/NADH in cytoplasm and mitochondria, respectively. The aim of the current study was to validate a gas-chromatography mass spectrometry method for simultaneous determination of the four metabolites in plasma and liver tissue. The procedure included an o-phenylenediamine microwave-assisted derivatization, followed by liquid-liquid extraction with ethyl acetate and silylation with bis(trimethylsilyl)trifluoroacetamide:trimethylchlorosilane 99:1. The calibration curves presented acceptable linearity, with a limit of quantification of 0.001 mM for pyruvate, β-hydroxybutyrate and acetoacetate and of 0.01 mM for lactate. The intra-day and inter-day accuracy and precision were within the European Medicines Agency's Guideline specifications. No significant differences were observed in the slope coefficient of three-point standard metabolite-spiked curves in plasma or liver and water, and acceptable recoveries were obtained in the metabolite-spiked samples. Applicability of the method was tested in precision-cut liver rat slices and also in HepG2 cells incubated under different experimental conditions challenging the redox state. In conclusion, the validated method presented good sensitivity, specificity and reproducibility in the quantification of lactate/pyruvate and β-hydroxybutyrate/acetate metabolites and may be useful in the evaluation of in vivo redox states.
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Affiliation(s)
- Robin Wijngaard
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
| | - Meritxell Perramón
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
| | - Marina Parra-Robert
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
| | - Susana Hidalgo
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
| | - Gina Butrico
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510, USA; (G.B.); (G.I.S.); (G.W.C.)
| | - Manuel Morales-Ruiz
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
- Department of Biomedicine, University of Barcelona, 08036 Barcelona, Spain
- Working Group for the Biochemical Assessment of Hepatic Disease-SEQCML, 08036 Barcelona, Spain
| | - Muling Zeng
- School of Biotechnology and Health Sciences, Wuyi University, 99 Yingbing Middle Rd., Jiangmen 529020, China; (M.Z.); (E.C.)
| | - Eudald Casals
- School of Biotechnology and Health Sciences, Wuyi University, 99 Yingbing Middle Rd., Jiangmen 529020, China; (M.Z.); (E.C.)
| | - Wladimiro Jiménez
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
- Department of Biomedicine, University of Barcelona, 08036 Barcelona, Spain
| | - Guillermo Fernández-Varo
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
- Department of Biomedicine, University of Barcelona, 08036 Barcelona, Spain
| | - Gerald I. Shulman
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510, USA; (G.B.); (G.I.S.); (G.W.C.)
| | - Gary W. Cline
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06510, USA; (G.B.); (G.I.S.); (G.W.C.)
| | - Gregori Casals
- Service of Biochemistry and Molecular Genetics, Hospital Clinic Universitari, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Carrer de Villarroel 170, 08036 Barcelona, Spain; (R.W.); (M.P.); (M.P.-R.); (S.H.); (M.M.-R.); (W.J.)
- Working Group for the Biochemical Assessment of Hepatic Disease-SEQCML, 08036 Barcelona, Spain
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7
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Dugheri S, Mucci N, Cappelli G, Bonari A, Campagna M, Arcangeli G, Bartolucci G. New fully automated gas chromatographic analysis of urinary S-phenylmercapturic acid in isotopic dilution using negative chemical ionization with isobutane as reagent gas. JOURNAL OF MASS SPECTROMETRY : JMS 2020; 55:e4481. [PMID: 31770470 DOI: 10.1002/jms.4481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
The determination of urinary S-phenylmercapturic acid (S-PMA) represents the most reliable biomarker to monitor the intake risk of airborne benzene. Recently, the European Chemical Agency deliberated new occupational exposure limits for benzene and recommended an S-PMA biological limit value of 2-μg/g creatinine. This limit is an order of magnitude lower than the previous one, and its determination constitutes a challenge in the analytical field. We developed and validated a method that allows the fully automated and sensitive determination of S-PMA by the use of gas-chromatography negative chemical ionization tandem mass spectrometry in isotopic dilution. For negative chemical ionization, we selected a mixture of 1% isobutane in argon as reactive gas, by studying its chemical ionization mechanism and optimal parameters compared with pure isobutane or pure methane. This gas mixture produces a more abundant signal of the target analyte than isobutane or methane, and it extended the operative lifetime of the ion source, enabling us to start a high-throughput approach of the S-PMA analysis. Moreover, energy-resolved mass spectrometry experiments were carried out to refine the MS/MS analysis conditions, testing nitrogen and argon as collision gases. The method optimization was pursued by a chemometric model by using the experimental design. The quantification limit for S-PMA was 0.10 μg/L. Accuracy (between 98.3% and 99.6%) and precision (ranging from 1.6% to 6.4%) were also evaluated. In conclusion, the newly developed assay represents a powerful tool for the robust, reliable, and sensitive quantification of urinary S-PMA, and because of its automation, it is well suited for application in large environmental and biological monitoring.
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Affiliation(s)
- Stefano Dugheri
- Industrial Hygiene and Toxicology Laboratory, Occupational Medicine Unit, Careggi University Hospital, Florence, Italy
| | - Nicola Mucci
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Giovanni Cappelli
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | | | - Marcello Campagna
- Department of Medical Science and Public Health, University of Cagliari, Monserrato, Italy
| | - Giulio Arcangeli
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Gianluca Bartolucci
- Department of Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Sesto Fiorentino, Italy
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8
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Dugheri S, Bonari A, Gentili M, Cappelli G, Pompilio I, Bossi C, Arcangeli G, Campagna M, Mucci N. High-Throughput Analysis of Selected Urinary Hydroxy Polycyclic Aromatic Hydrocarbons by an Innovative Automated Solid-Phase Microextraction. Molecules 2018; 23:molecules23081869. [PMID: 30050023 PMCID: PMC6222761 DOI: 10.3390/molecules23081869] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/16/2018] [Accepted: 07/26/2018] [Indexed: 01/01/2023] Open
Abstract
High-throughput screening of samples is the strategy of choice to detect occupational exposure biomarkers, yet it requires a user-friendly apparatus that gives relatively prompt results while ensuring high degrees of selectivity, precision, accuracy and automation, particularly in the preparation process. Miniaturization has attracted much attention in analytical chemistry and has driven solvent and sample savings as easier automation, the latter thanks to the introduction on the market of the three axis autosampler. In light of the above, this contribution describes a novel user-friendly solid-phase microextraction (SPME) off- and on-line platform coupled with gas chromatography and triple quadrupole-mass spectrometry to determine urinary metabolites of polycyclic aromatic hydrocarbons 1- and 2-hydroxy-naphthalene, 9-hydroxy-phenanthrene, 1-hydroxy-pyrene, 3- and 9-hydroxy-benzoantracene, and 3-hydroxy-benzo[a]pyrene. In this new procedure, chromatography’s sensitivity is combined with the user-friendliness of N-tert-butyldimethylsilyl-N-methyltrifluoroacetamide on-fiber SPME derivatization using direct immersion sampling; moreover, specific isotope-labelled internal standards provide quantitative accuracy. The detection limits for the seven OH-PAHs ranged from 0.25 to 4.52 ng/L. Intra-(from 2.5 to 3.0%) and inter-session (from 2.4 to 3.9%) repeatability was also evaluated. This method serves to identify suitable risk-control strategies for occupational hygiene conservation programs.
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Affiliation(s)
- Stefano Dugheri
- Laboratorio di Igiene e Tossicologia Industriale, Azienda Ospedaliero-Universitaria Careggi, Largo P. Palagi 1, 50139 Firenze, Italy.
| | - Alessandro Bonari
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi di Firenze, Largo G.A. Brambilla 3, 50139 Firenze, Italy.
| | - Matteo Gentili
- Giotto Biotech Srl, Via Madonna del Piano 6, 50019 Sesto Fiorentino (Firenze), Italy.
| | - Giovanni Cappelli
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi di Firenze, Largo G.A. Brambilla 3, 50139 Firenze, Italy.
| | - Ilenia Pompilio
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi di Firenze, Largo G.A. Brambilla 3, 50139 Firenze, Italy.
| | - Costanza Bossi
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi di Firenze, Largo G.A. Brambilla 3, 50139 Firenze, Italy.
| | - Giulio Arcangeli
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi di Firenze, Largo G.A. Brambilla 3, 50139 Firenze, Italy.
| | - Marcello Campagna
- Dipartimento di Scienze Mediche e Sanità Pubblica, Università di Cagliari, Cittadella Universitaria di Monserrato, SS 554 bivio Sestu, 09042 Monserrato (Cagliari), Italy.
| | - Nicola Mucci
- Dipartimento di Medicina Sperimentale e Clinica, Università degli Studi di Firenze, Largo G.A. Brambilla 3, 50139 Firenze, Italy.
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9
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Cosnier F, Grossmann S, Nunge H, Brochard C, Muller S, Lambert-Xolin AM, Sebillaud S, Rieger B, Thomas A, Décret MJ, Burgart M, Gaté L, Cossec B, Campo P. Metabolism of inhaled methylethylketone in rats. Drug Chem Toxicol 2017. [DOI: 10.1080/01480545.2017.1289220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Frédéric Cosnier
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Stéphane Grossmann
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Hervé Nunge
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Céline Brochard
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Samuel Muller
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Anne-Marie Lambert-Xolin
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Sylvie Sebillaud
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Benoît Rieger
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Aurélie Thomas
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Marie-Josèphe Décret
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Manuella Burgart
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Laurent Gaté
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Benoît Cossec
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
| | - Pierre Campo
- Toxicology and Biometrology Department, Institut National de Recherche et de Sécurité (INRS), Vandoeuvre-lès-Nancy, France
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10
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Gómez-Ríos GA, Reyes-Garcés N, Pawliszyn J. Evaluation of a multi-fiber exchange solid-phase microextraction system and its application to on-site sampling. J Sep Sci 2016; 38:3560-7. [PMID: 26311558 DOI: 10.1002/jssc.201500158] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 06/13/2015] [Accepted: 07/24/2015] [Indexed: 11/10/2022]
Abstract
Until recently, multiple solid-phase microextraction fibers could not be automatically desorbed in a single gas chromatographic sequence without manual intervention from an operator. This drawback had been a critical issue, particularly during the analysis of numerous on-site samples taken with various fiber assemblies. Recently, a Multi-Fiber Exchange system, designed to overcome this flaw found in other commercially available autosamplers, was released. In the current research, a critical evaluation of the Multi-Fiber Exchange system performance in terms of storage stability and long-term operation is presented. It was established in the course of our research that the Multi-Fiber Exchange system can operate continuously and precisely for multiple extraction/injection cycles. However, when the effect of residence time of commercial fibers on the Multi-Fiber Exchange tray was evaluated, results showed that among the evaluated fiber coatings, Carboxen/polydimethylsiloxane was the only coating capable of efficient storage on the tray for up to 24 h after field sampling without suffering significant loss of analytes (≤10% for benzene, toluene, ethylbenzene, o-xylene, decane, and limonene). Additionally, the system capability for high-throughput analysis was demonstrated by the unattended desorption of multiple fibers after on-site sampling of toluene, indoor air levels, in a polymer synthesis lab.
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Affiliation(s)
| | | | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Ontario, N2L 3G1, Canada
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Pereira J, Silva CL, Perestrelo R, Gonçalves J, Alves V, Câmara JS. Re-exploring the high-throughput potential of microextraction techniques, SPME and MEPS, as powerful strategies for medical diagnostic purposes. Innovative approaches, recent applications and future trends. Anal Bioanal Chem 2014; 406:2101-22. [DOI: 10.1007/s00216-013-7527-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 11/16/2013] [Accepted: 11/20/2013] [Indexed: 11/30/2022]
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12
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Bianchi F, Dugheri S, Musci M, Bonacchi A, Salvadori E, Arcangeli G, Cupelli V, Lanciotti M, Masieri L, Serni S, Carini M, Careri M, Mangia A. Fully automated solid-phase microextraction-fast gas chromatography-mass spectrometry method using a new ionic liquid column for high-throughput analysis of sarcosine and N-ethylglycine in human urine and urinary sediments. Anal Chim Acta 2011; 707:197-203. [PMID: 22027139 DOI: 10.1016/j.aca.2011.09.015] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 09/08/2011] [Accepted: 09/13/2011] [Indexed: 11/26/2022]
Abstract
A fully automated, non invasive, rapid and high-throughput method for the direct determination of sarcosine and N-ethylglycine in urine and urinary sediments using hexyl chloroformate derivatization followed by direct immersion solid-phase micro extraction and fast gas chromatography-mass spectrometric analysis was developed and validated. The use of a new ionic liquid narrow bore column, as well as the automation and miniaturization of the preparation procedure by a customized configuration of the utilized XYZ robotic system, allowed a friendly use of the GC apparatus achieving a quantitation limit of 0.06 μg L(-1) for sarcosine, good repeatability with CV always lower than 7% and reduced analysis times useful for point-of-care testing. The method was then applied for the analysis of 56 samples of urine and urinary sediments in healthy subjects, in those with benign prostatic hypertrophy and in patients with clinically localized prostate cancer. The results obtained showed that the medians of sarcosine/creatinine in urine were 103, 137 and 267 μg g(-1) respectively, thus assessing the potential use of sarcosine as urinary biomarker for prostate cancer detection. The highest values of sensitivity (79%) and specificity (87%) were obtained in correspondence of a cut-off value of 179 μg sarcosine(g creatinine)(-1), thus by using this cut-off threshold, sarcosine was significantly associated with the presence of cancer (p<0.0001). Finally, ROC analyses proved that the discrimination between clinically localized prostate cancer and patients without evidence of tumor is significantly correlated with sarcosine.
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Affiliation(s)
- F Bianchi
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università degli Studi di Parma, Parma, Italy.
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