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Fitzgerald CCJ, Bowen C, Elbourne M, Cawley A, McLeod MD. Energy-Resolved Fragmentation Aiding the Structure Elucidation of Steroid Biomarkers. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:1276-1281. [PMID: 35791638 DOI: 10.1021/jasms.2c00092] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The identification and confirmation of steroid sulfate metabolites in biological samples are essential to various fields, including anti-doping analysis and clinical sciences. Ultra-high-performance liquid chromatography with tandem mass spectrometry (UHPLC-MS/MS) is the leading method for the detection of intact steroid conjugates in biofluids, but because of the inherent complexity of biological samples and the low concentration of many targets of interest, metabolite identification based solely on mass spectrometry remains a major challenge. The confirmation of new metabolites typically depends on a comparison with synthetically derived reference materials that encompass a range of possible conjugation sites and stereochemistries. Herein, energy-resolved collision-induced dissociation (CID) is used as part of UHPLC-HRMS/MS analysis to distinguish between regio- and stereo-isomeric steroid sulfate compounds. This wholly MS-based approach was employed to guide the synthesis of reference materials to unambiguously confirm the identity of an equine steroid sulfate biomarker of testosterone propionate administration.
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Affiliation(s)
- Christopher C J Fitzgerald
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Christopher Bowen
- Mass Spectrometry Business Unit, Shimadzu Scientific Instruments (Australasia), Rydalmere, New South Wales 2116, Australia
| | - Madysen Elbourne
- Centre for Forensic Science, University of Technology Sydney, Broadway, New South Wales 2007, Australia
| | - Adam Cawley
- Australian Racing Forensic Laboratory, Racing NSW, Sydney, New South Wales 2000, Australia
| | - Malcolm D McLeod
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
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2
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Marasca C, Mandrioli R, Sardella R, Vovk T, Armirotti A, Cavalli A, Serretti A, Protti M, Mercolini L. Dried Volumetric Microsampling Approaches for the Therapeutic Drug Monitoring of Psychiatric Patients Undergoing Clozapine Treatment. Front Psychiatry 2022; 13:794609. [PMID: 35722565 PMCID: PMC9198272 DOI: 10.3389/fpsyt.2022.794609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 04/20/2022] [Indexed: 01/18/2023] Open
Abstract
Clozapine is one of the most widely used second-generation antipsychotic drugs (SGAs) for the treatment of schizophrenia. Despite advantages over first-generation drugs, clozapine still shows significant side effects and interindividual variations in efficacy. In order to ensure frequent therapeutic drug monitoring (TDM) and improve the compliance of psychiatric patients undergoing clozapine treatment, two novel dried microsampling approaches based on whole blood and plasma volumetric absorptive microsampling (b-VAMS and p-VAMS) and microfluidic generated-dried blood spot technology (mfDBS) were developed and coupled to HPLC with electrochemical detection (ED). The proposed miniaturized strategies by means of VAMS and microfluidic channel-based devices provide several advantages in terms of collection, storage, and handling compared to classical blood and plasma processing. Satisfactory validation results were obtained for all microsampling platforms, with mean extraction yields >85.1%, precision as relative standard deviation (RSD) < 5.1%, and stability < 4.5% analyte loss after 30 days for p-VAMS; mean extraction yields > 83.4%, precision RSD < 5.4%, and stability < 4.6% analyte loss after 30 days for b-VAMS, and mean extraction yields > 74.0%, precision RSD < 5.6%, and stability < 4.9% analyte loss after 30 days for mfDBS. The original microsampling methodologies have been successfully applied to the blood and plasma collected from five psychiatric patients for the monitoring of the levels of clozapine and its main metabolites, providing robust and reliable quali-quantitative results. Comparisons between results of the two dried microsampling technologies with those obtained by classic fluid plasma analysis were in good agreement and have demonstrated that the proposed miniaturized approaches could be suitable for TDM purposes.
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Affiliation(s)
- Camilla Marasca
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Bologna, Italy.,Computational and Chemical Biology, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy
| | - Roberto Mandrioli
- Department for Life Quality Studies (QuVi), Alma Mater Studiorum - University of Bologna, Rimini, Italy
| | - Roccaldo Sardella
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Tomaž Vovk
- Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Andrea Armirotti
- Analytical Chemistry Lab, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy
| | - Andrea Cavalli
- Computational and Chemical Biology, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy.,Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Bologna, Italy
| | - Alessandro Serretti
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum - University of Bologna, Bologna, Italy
| | - Michele Protti
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Bologna, Italy
| | - Laura Mercolini
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Bologna, Italy
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3
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Protti M, Sberna PM, Sberna AE, Ferrante R, Mandrioli R, Mercolini L. Enhanced urinary stability of peptide hormones and growth factors by dried urine microsampling. J Pharm Biomed Anal 2021; 204:114234. [PMID: 34246878 DOI: 10.1016/j.jpba.2021.114234] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 01/03/2023]
Abstract
Volumetric absorptive microsampling (VAMS) and dried urine spot (DUS) strategies were applied for the collection of dried microsamples for anti-doping testing of low-stability peptide hormones and growth factors prohibited by the World Anti-Doping Agency (WADA). Drying, storage and transport conditions, as well as pretreatment steps, were optimised before liquid chromatography - tandem mass spectrometry (LC-MS/MS) analysis. The analytical method has been fully validated in terms of sensitivity (limits of quantitation 0.3-10 ng/mL), precision (RSD% < 6.6 %) and extraction yields (78-91 %). Dried microsample stability studies (90 days) have been performed and compared to fluid urine stability. Significantly higher losses have been observed in fluid urine stored at -20 °C (up to 55 %) and -80 °C (up to 29 %) than in dried urine microsamples stored at room temperature (< 19 %). The final microsampling and analysis protocols allow the collection of urine microvolumes, unlikely to be tampered, stably storable and shippable with no particular precautions for possible anti-doping testing of prohibited peptides and hormones.
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Affiliation(s)
- Michele Protti
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy
| | - Paolo M Sberna
- Electrical Engineering, Mathematics and Computer Science, Else Kooi Laboratory, Delft University of Technology, Feldmannweg 17, 2628 CT, Delft, the Netherlands
| | - Angelo E Sberna
- Italian National Olympic Committee (CONI), Sicily Region Committee, Via Dante Alighieri 9, 94100, Enna, Italy
| | - Renzo Ferrante
- Carabinieri Health Protection Command - NAS Firenze Unit, Via Paisiello 8, 50144, Firenze, Italy
| | - Roberto Mandrioli
- Department for Life Quality Studies (QuVi), Alma Mater Studiorum - University of Bologna, Corso d'Augusto 237, 47921, Rimini, Italy
| | - Laura Mercolini
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy.
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4
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Thevis M. Broadening the Horizon of Antidoping Analytical Approaches Using Dried Blood Spots. Clin Chem 2021; 67:1041-1043. [PMID: 34060612 DOI: 10.1093/clinchem/hvab074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 04/22/2021] [Indexed: 01/14/2023]
Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn, Germany
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5
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Protti M, Sberna PM, Sardella R, Vovk T, Mercolini L, Mandrioli R. VAMS and StAGE as innovative tools for the enantioselective determination of clenbuterol in urine by LC-MS/MS. J Pharm Biomed Anal 2021; 195:113873. [PMID: 33422835 DOI: 10.1016/j.jpba.2020.113873] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 10/22/2022]
Abstract
Clenbuterol is a chiral, selective β2-adrenergic agonist. It is administered as a racemic mixture for therapeutic purposes (as a bronchodilator or prospective neuroprotective agent), but also for non-therapeutic uses (athletic performance enhancement, cattle growth promotion). Aim of the present study is to develop an original, enantioselective workflow for the analysis of clenbuterol enantiomers in urine microsamples. An innovative miniaturised sampling procedure by volumetric absorptive microsampling (VAMS) and a microsample pretreatment strategy based on stop-and-go extraction (StAGE) tips were developed and coupled to an original, chiral analytical method, exploiting liquid chromatography with triple quadrupole detection (LC-MS/MS). The method was validated, with satisfactory results: good linearity (r2 ≥ 0.9995) and LOQ values (0.3 ng/mL) were found over suitable concentration ranges. Extraction yield (>87 %), precision (RSD < 4.3 %) and matrix effect (85-90 %) were all within acceptable levels of confidence. After validation, the method was applied to the determination of clenbuterol in dried urine sampled by VAMS from patients taking the drug for therapeutic reasons. Analyte content ranged from 0.8 to 2.5 ng/mL per single enantiomer, with substantial retention of the original drug racemic composition. The VAMS-StAGE-LC-MS/MS workflow seems to be suitable for future application to anti-doping testing of clenbuterol in urine.
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Affiliation(s)
- Michele Protti
- Research group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Paolo M Sberna
- Department of Microelectronics, Delft University of Technology, Feldmannweg 17, 2628 CT Delft, the Netherlands
| | - Roccaldo Sardella
- Department of Pharmaceutical Sciences, University of Perugia, Via Fabretti 48, 06123 Perugia, Italy
| | - Tomaž Vovk
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Laura Mercolini
- Research group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.
| | - Roberto Mandrioli
- Department for Life Quality Studies (QuVi), Alma Mater Studiorum - University of Bologna, Corso d'Augusto 237, 47921 Rimini, Italy
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6
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Oliveira D, de Araújo A, Ribeiro W, Silva D, Duarte AC, de Sousa V, Pereira HG. Screening method of mildronate and over 300 doping agents by reversed-phase liquid chromatography-high resolution mass spectrometry. J Pharm Biomed Anal 2020; 195:113870. [PMID: 33453569 DOI: 10.1016/j.jpba.2020.113870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/09/2020] [Accepted: 12/21/2020] [Indexed: 12/31/2022]
Abstract
Considering the huge amount of substances associated with athletic performance improvement, current doping control analysis requires a comprehensive screening method, which leads to the detection of prohibited substances of different physico-chemical properties. This comprehensiveness associated with instrumental approaches based on high resolution mass spectrometry has allowed the development of extremely sensitive and selective detection methods. Furthermore, it is desirable the method to be simple, fast and straightforward. Mildronate is a highly polar quaternary amine, classified as metabolic modulator by the World Anti-Doping Agency (WADA). The inclusion of mildronate in the screening strategy is a challenge considering its singular physicochemical properties, compared to numerous doping agents of low and medium polarity. For this purpose, a method combining solid-phase extraction (SPE) and dilute-and-shoot approach has been developed and validated, allowing the detection of mildronate and other 332 prohibited substances. In the sample preparation protocol, the enzymatic deconjugation step and SPE conditions were stressed to enable the recovery of mildronate without jeopardizing the detection of other doping agents. The C18/18% SPE cartridge without any type of ionic interaction, associated with the dilute-and-shoot approach proved to be effective for all monitored substances. The instrumental method employed was based on liquid chromatography using a reversed-phase column in a 12-minute gradient coupled to a high-resolution mass spectrometry in full scan with positive and negative switching and fragmentation in the positive mode, for the most critical detection compounds. The performance of the method was evaluated regarding selectivity, precision, recovery, carry-over, limit of detection and stability, following the recommendations of WADA.
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Affiliation(s)
- Daniely Oliveira
- Brazilian Doping Control Laboratory 'LBCD-LADETEC', Av. Horácio Macedo 1281 Cidade Universitária, 21941-598, Rio de Janeiro, Brazil.
| | - Amanda de Araújo
- Brazilian Doping Control Laboratory 'LBCD-LADETEC', Av. Horácio Macedo 1281 Cidade Universitária, 21941-598, Rio de Janeiro, Brazil
| | - William Ribeiro
- Brazilian Doping Control Laboratory 'LBCD-LADETEC', Av. Horácio Macedo 1281 Cidade Universitária, 21941-598, Rio de Janeiro, Brazil
| | - Daniele Silva
- Brazilian Doping Control Laboratory 'LBCD-LADETEC', Av. Horácio Macedo 1281 Cidade Universitária, 21941-598, Rio de Janeiro, Brazil
| | - Ana Carolina Duarte
- Brazilian Doping Control Laboratory 'LBCD-LADETEC', Av. Horácio Macedo 1281 Cidade Universitária, 21941-598, Rio de Janeiro, Brazil
| | - Valeria de Sousa
- Federal University of Rio de Janeiro, Department of Drugs and Pharmaceutics, Av. Carlos Chagas Filho 373 Cidade Universitária, 21941-170, Rio de Janeiro, Brazil
| | - Henrique Gualberto Pereira
- Brazilian Doping Control Laboratory 'LBCD-LADETEC', Av. Horácio Macedo 1281 Cidade Universitária, 21941-598, Rio de Janeiro, Brazil
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7
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Protti M, Mandrioli R, Mercolini L. Quantitative microsampling for bioanalytical applications related to the SARS-CoV-2 pandemic: Usefulness, benefits and pitfalls. J Pharm Biomed Anal 2020; 191:113597. [PMID: 32927419 PMCID: PMC7456588 DOI: 10.1016/j.jpba.2020.113597] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/23/2020] [Accepted: 08/25/2020] [Indexed: 12/20/2022]
Abstract
SARS-CoV-2 emergency sparks the need for diagnostic and therapeutic actions. Microsampling is emerging in as an attractive alternative to traditional sampling. Advantages and challenges of the main microsampling techniques are reported. Available microsampling applications of interest for SARS-CoV-2 are described. Most useful information for researchers and clinicians are gathered and provided.
The multiple pathological effects of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, and its total novelty, mean that currently a lot of diagnostic and therapeutic tools, established and tentative alike, are needed to treat patients in a timely, effective way. In order to make these tools more reliable, faster and more feasible, biological fluid microsampling techniques could provide many advantages. In this review, the most important microsampling techniques are considered (dried matrix spots, volumetric absorptive microsampling, microfluidics and capillary microsampling, solid phase microextraction) and their respective advantages and disadvantages laid out. Moreover, currently available microsampling applications of interest for SARS-CoV-2 therapy are described, in order to make them as much widely known as possible, hopefully providing useful information to researchers and clinicians alike.
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Affiliation(s)
- Michele Protti
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Roberto Mandrioli
- Department for Life Quality Studies, Alma Mater Studiorum - University of Bologna, Corso d'Augusto 237, 47921 Rimini, Italy
| | - Laura Mercolini
- Research Group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.
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8
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Paal M, Habler K, Vogeser M. Mass spectrometric sample identification with indicator compounds introduced via labeled sample tubes. Clin Chem Lab Med 2020; 59:147-154. [PMID: 32716904 DOI: 10.1515/cclm-2020-0667] [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: 05/07/2020] [Accepted: 07/04/2020] [Indexed: 11/15/2022]
Abstract
Objectives The risk of sample confusion continues to be a challenge for the pre-analytical part of the overall testing process. We here describe a novel system to track samples based on a chemical code labeling of test tubes with unique combinations of indicator compounds, which are naturally not present in specimens of human origin. As part of the sample vessel filling, the liquid specimens are permanently labeled with the compound code that can be tracked back to the primary tube. Methods As a proof of concept we used 10 stable-isotope-labeled derivates of medical drugs as indicator substances to create a combinatory 10-digit binary number ID for individual test tubes, i.e. presence/absence of the respective compound. For this purpose, combinations of indicator compounds were provided in evaporated form in polypropylene tubes prior to filling with anonymized patient whole blood and corresponding plasmas subjected to liquid chromatography tandem-mass spectrometry designed to detect the 10 indicator compounds. Results In the blind analysis, we correctly identified 307 different whole blood samples by readout of a 10-digit binary number ID based on the detection of indicator compounds with respect to their presence and number. Conclusions We have demonstrated the feasibility of an internal labeling procedure for diagnostic samples with mass spectrometry-based readout of dissolved indicator compound combinations as a binary number ID. With an increasing number of coding compounds (≫10) a vast number of combinations for sample labeling can be realized beyond the proof of concept setting studied herein.
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Affiliation(s)
- Michael Paal
- Institute of Laboratory Medicine, University Hospital, LMU Munich, Germany
| | - Katharina Habler
- Institute of Laboratory Medicine, University Hospital, LMU Munich, Germany
| | - Michael Vogeser
- Institute of Laboratory Medicine, University Hospital, LMU Munich, Germany
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Dried Urine Microsampling Coupled to Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) for the Analysis of Unconjugated Anabolic Androgenic Steroids. Molecules 2020; 25:molecules25143210. [PMID: 32674492 PMCID: PMC7397045 DOI: 10.3390/molecules25143210] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/16/2022] Open
Abstract
Testing and monitoring anabolic androgenic steroids in biological fluids is a key activity in anti-doping practices. In this study, a novel approach is proposed, based on dried urine microsampling through two different workflows: dried urine spots (DUS) and volumetric absorptive microsampling (VAMS). Both techniques can overcome some common drawbacks of urine sampling, such as analyte instability and storage and transportation problems. Using an original, validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) method, exogenous and endogenous unconjugated steroids were analysed. Despite the limitations of microsampling volume, good sensitivity was obtained (limit of quantitation ≤1.5 ng/mL for all analytes), with satisfactory precision (relative standard deviation <7.6%) and absolute recovery (>70.3%). Both microsampling platforms provide reliable results, in good agreement with those obtained from urine.
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Hand RA, Piletska E, Bassindale T, Morgan G, Turner N. Application of molecularly imprinted polymers in the anti-doping field: sample purification and compound analysis. Analyst 2020; 145:4716-4736. [PMID: 32500888 DOI: 10.1039/d0an00682c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The problem posed by anti-doping requirements is one of the great analytical challenges; multiple compound detection at low ng ml-1 levels from complex samples, with requirements for exceptional confidence in results. This review surveys the design, synthesis and application of molecularly imprinted polymers (MIPs) in this field, focusing on the templating of androgenous anabolic steroids (AASs), as the most commonly abused substances, but also other WADA prohibited substances. Commentary on the application of these materials in detection, clean-up and sensing is offered, alongside views on the future of imprinting in this field.
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Affiliation(s)
- Rachel A Hand
- School of Pharmacy, De Montfort University, Leicester, LE2 9BH, UK.
| | - Elena Piletska
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH, UK
| | - Thomas Bassindale
- Department of Chemistry and Forensic Science, Sheffield Hallam University, Sheffield, S1 1WB, UK
| | - Geraint Morgan
- School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
| | - Nicholas Turner
- School of Pharmacy, De Montfort University, Leicester, LE2 9BH, UK.
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Rossini EL, Kulyk DS, Ansu-Gyeabourh E, Sahraeian T, Pezza HR, Badu-Tawiah AK. Direct Analysis of Doping Agents in Raw Urine Using Hydrophobic Paper Spray Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:1212-1222. [PMID: 32357004 PMCID: PMC7891915 DOI: 10.1021/jasms.0c00063] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, the direct analysis of doping agents in urine samples with no sample preparation by a modified paper spray mass spectrometry (PS-MS) methodology has been demonstrated for the first time. We have described a paper surface treatment with trichloromethylsilane using a gas-phase reaction to increase the ionization of target compounds. This approach was applied for the analysis of two classes of banned substances in urine samples: anabolic agents (trenbolone and clenbuterol) and diuretics (furosemide and hydrochlorothiazide). Under optimized conditions, the developed methods presented satisfactory repeatability, and an analysis of variance showed linearity without lack-of-fit. Highly sensitive detections as low as sub-nanogram per milliliter levels, which is below the minimum required performance levels proposed by the World Anti-Doping Agency, have been reached using the hydrophobic PS-MS analysis without any preconcentration and cleanup step.
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Affiliation(s)
- Eduardo Luiz Rossini
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
- Institute of Chemistry, Department of Analytical Chemistry, UNESP - São Paulo State University, R. Prof. Francisco Degni 55, P.O. Box 355, 14800-900, Araraquara, SP, Brazil
| | - Dmytro S. Kulyk
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
| | - Emelia Ansu-Gyeabourh
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
| | - Taghi Sahraeian
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
| | - Helena Redigolo Pezza
- Institute of Chemistry, Department of Analytical Chemistry, UNESP - São Paulo State University, R. Prof. Francisco Degni 55, P.O. Box 355, 14800-900, Araraquara, SP, Brazil
| | - Abraham K. Badu-Tawiah
- Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Avenue, Columbus, Ohio 43210, United States
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Shostko DY, Liubina AI, Kozyrkov YY, Beliaev SA. The synthesis of 4-chloro-17β-hydroxymethyl-17α-methyl-18-norandrosta-4,13-diene-3α-ol - Proposed long term metabolite (M4) of oralturinabol. Steroids 2020; 158:108601. [PMID: 32084502 DOI: 10.1016/j.steroids.2020.108601] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/29/2020] [Accepted: 02/05/2020] [Indexed: 12/18/2022]
Abstract
4-Chloro-17β-hydroxymethyl-17α-methyl-18-norandrosta-4,13-diene-3α-ol is one of proposed long term metabolites of oralturinabol (anabolic androgenic steroid restricted in sport). The synthesis of 4-chloro-17β-hydroxymethyl-17α-methyl-18-norandrosta-4,13-diene-3α-ol was achieved. Isomerisation of configuration of 13-carbon was used for construction of 17β-hydroxymethyl-17α-methyl fragment. The proposed route of synthesis allows to obtain 3β-hydroxy isomer as well.
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Affiliation(s)
- D Yu Shostko
- National Anti-Doping Laboratory, Lesnoy 31, 223040, Belarus
| | - A I Liubina
- National Anti-Doping Laboratory, Lesnoy 31, 223040, Belarus
| | - Yu Yu Kozyrkov
- National Anti-Doping Laboratory, Lesnoy 31, 223040, Belarus.
| | - S A Beliaev
- National Anti-Doping Laboratory, Lesnoy 31, 223040, Belarus
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Microsampling and LC–MS/MS for antidoping testing of glucocorticoids in urine. Bioanalysis 2020; 12:769-782. [DOI: 10.4155/bio-2020-0044] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background. Systemic glucocorticoids are prohibited in-competition by the World Anti-Doping Agency. Here, we describe an original microsampling workflow for the quantitation of three endogenous (cortisol, corticosterone and cortisone) and three exogenous (dexamethasone, methylprednisolone and fludrocortisone) corticosteroids in 30 μl of human urine. Materials & methods. Microsampling was carried out by dried urine spot (DUS) sampling and volumetric absorptive microsampling (VAMS), followed by solvent extraction and LC–MS/MS analysis. Results & conclusion: Good linearity (r2 > 0.9989) was obtained for all analytes; extraction yields (>81%), precision (RSD < 8.6%) and matrix effect (<12%) were satisfactory. Microsample stability at room temperature was good (analyte loss <15% after 3 months). Data obtained from real urine microsample analysis were compared with those of fluid urine, providing very good agreement (r2 > 0.9991).
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14
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Blood and Plasma Volumetric Absorptive Microsampling (VAMS) Coupled to LC-MS/MS for the Forensic Assessment of Cocaine Consumption. Molecules 2020; 25:molecules25051046. [PMID: 32110941 PMCID: PMC7179185 DOI: 10.3390/molecules25051046] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/10/2020] [Accepted: 02/24/2020] [Indexed: 02/01/2023] Open
Abstract
Reliable, feasible analytical methods are needed for forensic and anti-doping testing of cocaine and its most important metabolites, benzoylecgonine, ecgonine methyl ester, and cocaethylene (the active metabolite formed in the presence of ethanol). An innovative workflow is presented here, using minute amounts of dried blood or plasma obtained by volumetric absorptive microsampling (VAMS), followed by miniaturized pretreatment by dispersive pipette extraction (DPX) and LC-MS/MS analysis. After sampling 20 µL of blood or plasma with a VAMS device, the sample was dried, extracted, and loaded onto a DPX tip. The DPX pretreatment lasted less than one minute and after elution with methanol the sample was directly injected into the LC-MS/MS system. The chromatographic analysis was carried out on a C8 column, using a mobile phase containing aqueous formic acid and acetonitrile. Good extraction yield (> 85%), precision (relative standard deviation, RSD < 6.0%) and matrix effect (< 12%) values were obtained. Analyte stability was outstanding (recovery > 85% after 2 months at room temperature). The method was successfully applied to real blood and plasma VAMS, with results in very good agreement with those of fluid samples. The method seems suitable for the monitoring of concomitant cocaine and ethanol use by means of plasma or blood VAMS testing.
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Thevis M, Kuuranne T, Geyer H. Annual banned‐substance review – Analytical approaches in human sports drug testing. Drug Test Anal 2020; 12:7-26. [DOI: 10.1002/dta.2735] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 11/09/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research ‐ Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents Cologne Germany
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Genève and Lausanne Centre Hospitalier Universitaire Vaudois and University of Lausanne Epalinges Switzerland
| | - Hans Geyer
- Center for Preventive Doping Research ‐ Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents Cologne Germany
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Welcome to volume 12 of Bioanalysis. Bioanalysis 2019; 12:1-5. [PMID: 31849263 DOI: 10.4155/bio-2019-0262] [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: 11/17/2022] Open
Abstract
Welcome to volume 12 of Bioanalysis. We want to take this opportunity to wish you all a Happy New Year. As we step into another year of the journal, we would like to reflect on the last year, which was an important milestone for the journal having reached its tenth anniversary. We want to thank all our authors, readers and reviewers, as well as our Editorial Board members for their continued support. We very much look forward to working with everyone in 2020.
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