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Dos Santos VHP, Andre RS, Dos Anjos JP, Mercante LA, Correa DS, Silva EO. Biotransformation of progesterone by endophytic fungal cells immobilized on electrospun nanofibrous membrane. Folia Microbiol (Praha) 2024; 69:407-414. [PMID: 37979123 DOI: 10.1007/s12223-023-01113-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023]
Abstract
Biotransformation of steroids by fungi has been raised as a successful, eco-friendly, and cost-effective biotechnological alternative for chemical derivatization. Endophytic fungi live inside vegetal tissues without causing damage to the host plant, making available unique enzymes that carry out uncommon reactions. Moreover, using nanofibrous membranes as support for immobilizing fungal cells is a powerful strategy to improve their performance by enabling the combined action of adsorption and transformation processes, along with increasing the stability of the fungal cell. In the present study, we report the use of polyacrylonitrile nanofibrous membrane (PAN NFM) produced by electrospinning as supporting material for immobilizing the endophytic fungus Penicillium citrinum H7 aiming the biotransformation of progesterone. The PAN@H7 NFM displayed a high progesterone transformation efficiency (above 90%). The investigation of the biotransformation pathway of progesterone allowed the putative structural characterization of its main fungal metabolite by GC-MS analysis. The oxidative potential of P. citrinum H7 was selective for the C-17 position of the steroidal nucleus.
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Affiliation(s)
| | - Rafaela S Andre
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation, São Carlos, 13560-970, Brazil
| | - Jeancarlo Pereira Dos Anjos
- University Center SENAI CIMATEC, Salvador, 41650-010, Brazil
- INCT in Energy and Environment, Federal University of Bahia, Salvador, 40170-115, Brazil
| | - Luiza A Mercante
- Institute of Chemistry, Federal University of Bahia, Salvador, 40170-115, Brazil
| | - Daniel S Correa
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation, São Carlos, 13560-970, Brazil
| | - Eliane Oliveira Silva
- Department of Organic Chemistry, Institute of Chemistry, Federal University of Bahia, Salvador, 40170-115, Brazil.
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Viljanto M, Love C, White D, Habershon-Butcher J, Hincks P, Gray B, Scarth J. Detection of methandienone and its metabolites in equine urine, plasma and hair following a multidose oral administration. Drug Test Anal 2024. [PMID: 38234065 DOI: 10.1002/dta.3633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 01/19/2024]
Abstract
Methandienone is an anabolic-androgenic steroid that is prohibited in equine sports due to its potential performance enhancing properties. Metabolism and detection of methandienone in equine urine have been investigated comprehensively in literature; however, there is a limited knowledge about its metabolites in equine plasma and no information about its detection in equine hair. Following a multi-dose oral administration of methandienone to two Thoroughbred horses, 17-epimethandienone, methyltestosterone, two mono-hydroxylated, two di-hydroxylated and three 17α-methylandrostanetriol metabolites were detected in plasma. The majority of these were present as free analytes, whilst the mono-hydroxylated metabolites and one isomer of 17α-methylandrostanetriol were partially conjugated. Estimated peak concentrations of methandienone were 6,000 and 11,100 pg/ml; meanwhile, they were 25.4 and 40.5 pg/ml for methyltestosterone. The most abundant analyte in the post-administration plasma samples of both horses was the mono-hydroxylated metabolite; however, the parent compound provided the longest detection (up to 96 h). Screening analysis of hair enabled the detection of methandienone in mane hair samples only, for up to 3 months. Its mono- and di-hydroxylated metabolites were detected with greater peak responses for up to 6 months post-administration in both mane and tail samples, showing that these metabolites could be better analytical targets for hair analysis when administered orally. A follow-up methodology with an extensive wash procedure confirmed the presence of methandienone and its metabolites in a number of post-administration hair samples. Final wash samples were also analysed to assess the degree of internal incorporation (via bloodstream) against possible external deposition (via sweat/sebum).
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3
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Mullen N, Curneen J, Donlon PT, Prakash P, Bancos I, Gurnell M, Dennedy MC. Treating Primary Aldosteronism-Induced Hypertension: Novel Approaches and Future Outlooks. Endocr Rev 2024; 45:125-170. [PMID: 37556722 PMCID: PMC10765166 DOI: 10.1210/endrev/bnad026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 07/11/2023] [Accepted: 07/26/2023] [Indexed: 08/11/2023]
Abstract
Primary aldosteronism (PA) is the most common cause of secondary hypertension and is associated with increased morbidity and mortality when compared with blood pressure-matched cases of primary hypertension. Current limitations in patient care stem from delayed recognition of the condition, limited access to key diagnostic procedures, and lack of a definitive therapy option for nonsurgical candidates. However, several recent advances have the potential to address these barriers to optimal care. From a diagnostic perspective, machine-learning algorithms have shown promise in the prediction of PA subtypes, while the development of noninvasive alternatives to adrenal vein sampling (including molecular positron emission tomography imaging) has made accurate localization of functioning adrenal nodules possible. In parallel, more selective approaches to targeting the causative aldosterone-producing adrenal adenoma/nodule (APA/APN) have emerged with the advent of partial adrenalectomy or precision ablation. Additionally, the development of novel pharmacological agents may help to mitigate off-target effects of aldosterone and improve clinical efficacy and outcomes. Here, we consider how each of these innovations might change our approach to the patient with PA, to allow more tailored investigation and treatment plans, with corresponding improvement in clinical outcomes and resource utilization, for this highly prevalent disorder.
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Affiliation(s)
- Nathan Mullen
- The Discipline of Pharmacology and Therapeutics, School of Medicine, University of Galway, Galway H91V4AY, Ireland
| | - James Curneen
- The Discipline of Pharmacology and Therapeutics, School of Medicine, University of Galway, Galway H91V4AY, Ireland
| | - Padraig T Donlon
- The Discipline of Pharmacology and Therapeutics, School of Medicine, University of Galway, Galway H91V4AY, Ireland
| | - Punit Prakash
- Department of Electrical and Computer Engineering, Kansas State University, Manhattan, KS 66506, USA
| | - Irina Bancos
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Department of Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Mark Gurnell
- Wellcome-MRC Institute of Metabolic Science, University of Cambridge and NIHR Cambridge Biomedical Research Centre, Addenbrooke's Hospital, Cambridge Biomedical Campus, Cambridge CB2 0QQ, UK
| | - Michael C Dennedy
- The Discipline of Pharmacology and Therapeutics, School of Medicine, University of Galway, Galway H91V4AY, Ireland
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Thomas A, Thevis M. Recent advances in mass spectrometry for the detection of doping. Expert Rev Proteomics 2024; 21:27-39. [PMID: 38214680 DOI: 10.1080/14789450.2024.2305432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/08/2024] [Indexed: 01/13/2024]
Abstract
INTRODUCTION The analysis of doping control samples is preferably performed by mass spectrometry, because obtained results meet the highest analytical standards and ensure an impressive degree of reliability. The advancement in mass spectrometry and all its associated technologies thus allow for continuous improvements in doping control analysis. AREAS COVERED Modern mass spectrometric systems have reached a status of increased sensitivity, robustness, and specificity within the last decade. The improved sensitivity in particular has, on the other hand, also led to the detection of drug residues that were attributable to scenarios where the prohibited substances were not administered consciously but rather by the unconscious ingestion of or exposure to contaminated products. These scenarios and their doubtless clarification represent a great challenge. Here, too, modern MS systems and their applications can provide good insights in the interpretation of dose-related metabolism of prohibited substances. In addition to the development of new instruments itself, software-assisted analysis of the sometimes highly complex data is playing an increasingly important role and facilitating the work of doping control laboratories. EXPERT OPINION The sensitive analysis and evaluation of a higher number of samples in a shorter time is made possible by the ongoing developments in mass spectrometry.
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Affiliation(s)
- Andreas Thomas
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn, Germany
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Muresan AR, Rahaman KA, Son J, Kang MJ, Kwon OS. Metabolites identification of anabolic steroid bolasterone in vitro and in rats by high resolution liquid chromatography mass spectrometry. Drug Test Anal 2023; 15:1329-1343. [PMID: 36700373 DOI: 10.1002/dta.3447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/27/2023]
Abstract
Bolasterone (7α,17α-dimethyltestosterone) and anabolic androgenic steroids are included in the World Anti-Doping Agency's Prohibited list of substances. This study aimed to evaluate the metabolism of bolasterone through in vitro experiments using rat liver microsomes and in vivo experiments using rat urine after oral administration. Urine samples were collected over a 168-h period. Bolasterone and its metabolites were detected by liquid chromatography coupled with a Q-Exactive Obitrap mass spectrometry (LC-HRMS). Ultimately 16 hydroxylated metabolites (M1-M16), one metabolite from the reduction of the 3-keto function and 4-ene (M17), and one glucuronic acid conjugated metabolite (M18) were detected. Metabolites M17 and M18 were confirmed by comparison with available reference or authentic standards. Metabolic modifications in the structure of the parent bolasterone result in different fragmentation patterns. Based on the sensitivity of the HRMS data, characteristic ions such as m/z 121.064 (C8 H9 O) generated from ring A of the mono-hydroxylated metabolites and 121.101 (C9 H13 ) generated from ring D of the di-hydroxylated metabolites were observed that helped differentiate between the obtained metabolites. The structures of fragment ions were tentatively proposed based on their fragmentation pathways, where the significant ions were correlated to the possible structural fragments. In conclusion, new metabolites of bolasterone were detected and characterized by the use of the full-scan and dd-MS/MS using LC-HRMS, and this data can be useful for providing metabolite information for the interpretation of mass spectra of anabolic bolasterone analogues for doping screening tests.
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Affiliation(s)
- Anca Raluca Muresan
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul, South Korea
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul, South Korea
| | - Khandoker Asiqur Rahaman
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul, South Korea
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul, South Korea
| | - Junghyun Son
- Doping Control Center, Korea Institute of Science and Technology, Seoul, South Korea
| | - Min-Jung Kang
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul, South Korea
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul, South Korea
| | - Oh-Seung Kwon
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul, South Korea
- Doping Control Center, Korea Institute of Science and Technology, Seoul, South Korea
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Albertsdóttir AD, Van Gansbeke W, Van Eenoo P, Polet M. Evaluation of alternative gas chromatographic and mass spectrometric behaviour of trimethylsilyl-derivatives of non-hydrolysed sulfated anabolic steroids. Drug Test Anal 2023; 15:1344-1355. [PMID: 36843396 DOI: 10.1002/dta.3462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/13/2023] [Accepted: 02/16/2023] [Indexed: 02/28/2023]
Abstract
Sulfated metabolites have shown to have potential as long-term markers (LTMs) of anabolic-androgenic steroid (AAS) abuse. The compatibility of gas chromatography-mass spectrometry (GC-MS) with trimethylsilyl (TMS)-derivatives of non-hydrolysed sulfated steroids has been demonstrated, where, after derivatisation, generally, two closely eluting isomers are formed that both have the same molecular ion [M-H2 SO4 ]•+ . Sulfated reference standards are in limited commercial availability, and therefore, the current knowledge of the GC-MS behaviour of these compounds is mainly based on sulfating and analysing the available standard reference material. This procedure can unfortunately not cover all of the current known LTMs as these are often not available as pure substance. Therefore, in theory, some metabolites could be missed as they exhibit alternative behaviour. To investigate the matter, in-house sulfated reference materials that bear resemblance to known sulfated LTMs were analysed on GC-MS in their TMS-derivatised non-hydrolysed state. The (alternative) gas chromatographic and mass spectrometric behaviour was mapped, evaluated and linked to the corresponding steroid structures. Afterwards, using fraction collection, known sulfated LTMs were isolated from excretion urine to confirm the observed findings. The categories that were selected were mono-hydroxy-diones, 17-methyl-3,17-diols and 17-keto-3,16-diols as these are commonly encountered AAS conformations. The ability to predict the GC-MS behaviour of non-hydrolysed sulfated AAS metabolites is the corner stone of finding new metabolites. This knowledge is also essential, for example, for understanding AAS detection analyses, for the mass spectrometric characterization of metabolites of new designer steroids or when one needs to characterize an unknown steroid structure.
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Affiliation(s)
| | - Wim Van Gansbeke
- Doping Control Laboratory (DoCoLab), Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory (DoCoLab), Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Michael Polet
- Doping Control Laboratory (DoCoLab), Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
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Dhurjad P, Jaiswal P, Gupta K, Wanjari P, Sonti R. Mass spectrometry: A key tool in anti‐doping. SEPARATION SCIENCE PLUS 2022. [DOI: 10.1002/sscp.202200058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- Pooja Dhurjad
- Department of Pharmaceutical Analysis National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad India
| | - Pooja Jaiswal
- Department of Pharmaceutical Analysis National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad India
| | - Kajal Gupta
- Department of Pharmaceutical Analysis National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad India
| | - Parita Wanjari
- Department of Pharmaceutical Analysis National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad India
| | - Rajesh Sonti
- Department of Pharmaceutical Analysis National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad India
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Pereira Dos Santos VH, Luiz JHH, Dos Anjos JP, de Oliveira Silva E. Oxidative potential of two Brazilian endophytic fungi from Handroanthus impetiginosus towards progesterone. Steroids 2022; 187:109101. [PMID: 35970224 DOI: 10.1016/j.steroids.2022.109101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 08/06/2022] [Accepted: 08/09/2022] [Indexed: 11/26/2022]
Abstract
Biotransformation has been successfully employed to conduct uncommon reactions, which would hardly be carried out by chemical synthesis. A wide diversity of compounds may be metabolized by fungi, leading to chemical derivatives through selective reactions that work under ecofriendly conditions. Endophytic fungi live inside vegetal tissues without causing damage to the host plant, making available unique enzymes for interesting chemical derivatization. Biotransformation of steroids by endophytic fungi may provide new derivatives as these microorganisms came from uncommon and underexplored habitats. In this study, endophytic strains isolated from Handroanthus impetiginosus leaves were assayed for biotransformation of progesterone, and its derivatives were identified through GC-EI-MS analysis. The endophyte Talaromyces sp. H4 was capable of transforming the steroidal nucleus selectively into four products through selective ene-reduction of the C4-C5 double bond and C-17 oxidation. The best conversion rate of progesterone (>90 %) was reached with Penicillium citrinum H7 endophytic strain that transformed the substrate into one derivative. The results highlight endophytic fungi's potential to obtain new and interesting steroidal derivatizations.
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Affiliation(s)
| | | | - Jeancarlo Pereira Dos Anjos
- University Center SENAI CIMATEC, Salvador, BA, Brazil; INCT in Energy and Environment, Federal University of Bahia, Salvador, BA, Brazil
| | - Eliane de Oliveira Silva
- Departament of Organic Chemistry, Chemistry Institute, Federal University of Bahia, Salvador, BA, Brazil.
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Psychosocial aspects of sports medicine in pediatric athletes: Current concepts in the 21 st century. Dis Mon 2022:101482. [PMID: 36100481 DOI: 10.1016/j.disamonth.2022.101482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Behavioral aspects of organized sports activity for pediatric athletes are considered in a world consumed with winning at all costs. In the first part of this treatise, we deal with a number of themes faced by our children in their sports play. These concepts include the lure of sports, sports attrition, the mental health of pediatric athletes (i.e., effects of stress, anxiety, depression, suicide in athletes, ADHD and stimulants, coping with injuries, drug use, and eating disorders), violence in sports (i.e., concepts of the abused athlete including sexual abuse), dealing with supervisors (i.e., coaches, parents), peers, the talented athlete, early sports specialization and sports clubs. In the second part of this discussion, we cover ergolytic agents consumed by young athletes in attempts to win at all costs. Sports doping agents covered include anabolic steroids (anabolic-androgenic steroids or AAS), androstenedione, dehydroepiandrostenedione (DHEA), human growth hormone (hGH; also its human recombinant homologue: rhGH), clenbuterol, creatine, gamma hydroxybutyrate (GHB), amphetamines, caffeine and ephedrine. Also considered are blood doping that includes erythropoietin (EPO) and concepts of gene doping. In the last section of this discussion, we look at disabled pediatric athletes that include such concepts as athletes with spinal cord injuries (SCIs), myelomeningocele, cerebral palsy, wheelchair athletes, and amputee athletes; also covered are pediatric athletes with visual impairment, deafness, and those with intellectual disability including Down syndrome. In addition, concepts of autonomic dysreflexia, boosting and atlantoaxial instability are emphasized. We conclude that clinicians and society should protect our precious pediatric athletes who face many challenges in their involvement with organized sports in a world obsessed with winning. There is much we can do to help our young athletes find benefit from sports play while avoiding or blunting negative consequences of organized sport activities.
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Berger BK, Wicker AP, Preuss EK, Fujito Y, Hedgepeth W, Nishimura M, Schug KA. Streamlined stationary phase selection facilitated by a “sample-plug retention test” in supercritical fluid extraction-supercritical fluid chromatography-mass spectroscopy (SFE-SFC-MS) method development for on-line extraction of anabolic agents. J LIQ CHROMATOGR R T 2022. [DOI: 10.1080/10826076.2022.2098319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Blair K. Berger
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
| | - A. Paige Wicker
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
| | - Emily K. Preuss
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
| | - Yuka Fujito
- Innovation Center, Shimadzu Scientific Instruments, Inc., Columbia, MD, USA
| | - William Hedgepeth
- Innovation Center, Shimadzu Scientific Instruments, Inc., Columbia, MD, USA
| | - Masayuki Nishimura
- Innovation Center, Shimadzu Scientific Instruments, Inc., Columbia, MD, USA
| | - Kevin A. Schug
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX, USA
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11
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da Silva MC, Rocha DG, Pereira MDPM, Lana MAG, Assis DCSD, Faria AF. In Vivo Administration of Stanozolol in Cattle: Depletion and Stability Studies Using UHPLC-Q-Orbitrap. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4749-4754. [PMID: 35380851 DOI: 10.1021/acs.jafc.1c08055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
An in vivo study was performed in order to evaluate the depletion time of stanozolol and its main metabolites using naturally incurred urine sample collected after the administration of intramuscular injections in 12 steers. A stability study was also carried out to investigate the influence of the storage period and the freeze-thaw cycles. A fast parent drug metabolization was observed, because within 6 h after drug administration, the signal of the metabolite 16β-hydroxystanozolol was predominant. After the second drug administration, a detection window of 17 days was obtained. The stability was studied using ANOVA, in which a storage condition of -20 °C proved stable during 240 days, which was also confirmed after 5 freeze-thaw cycles.
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Affiliation(s)
- Mariana C da Silva
- Department of Chemistry, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Diego G Rocha
- Federal Laboratory of Animal and Plant Health and Inspection of Minas Gerais, Ministry of Agriculture, Livestock and Food Supply of Brazil, Av. Rômulo Joviano, s/no, Olaria, Pedro Leopoldo, Minas Gerais 33250-220, Brazil
| | - Marianna de P M Pereira
- Veterinary School, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Mary Ane G Lana
- Federal Laboratory of Animal and Plant Health and Inspection of Minas Gerais, Ministry of Agriculture, Livestock and Food Supply of Brazil, Av. Rômulo Joviano, s/no, Olaria, Pedro Leopoldo, Minas Gerais 33250-220, Brazil
| | - Débora C S de Assis
- Veterinary School, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Adriana F Faria
- Department of Chemistry, Institute of Exact Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais 31270-901, Brazil
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12
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Medaka embryos as a model for metabolism of anabolic steroids. Arch Toxicol 2022; 96:1963-1974. [PMID: 35352155 PMCID: PMC9151555 DOI: 10.1007/s00204-022-03284-4] [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] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/14/2022] [Indexed: 01/07/2023]
Abstract
In anti-doping science, the knowledge of drug metabolism is a prerequisite to identify analytical targets for the detection of misused prohibited substances. As the most obvious way to study xenobiotic metabolism, the administration to human volunteers, faces ethical concerns, there is a need for model systems. In the present study, we investigated whether Oryzias latipes (medaka) embryos might be an alternative, non-animal test model to study human-like metabolism. In the present study, we exposed medaka embryos at the morula stage to the anabolic steroid metandienone (10 µM or 50 µM) for a period of 2 or 8 days. According to the fish embryo toxicity test (OECD test), we assessed the developmental status of the embryos. We further investigated metandienone metabolites by high-performance liquid chromatography- and gas chromatography-mass spectrometry. Medaka embryos produced three mono-hydroxylated and one reduced metabolite known from human biotransformation. Developmental malformations were observed for the exposition to 50 µM metandienone, while a significant elevation of the heart beat was also present in those individuals exposed to the lower dose for 8 days. The present study demonstrates that the medaka embryo represents a promising model to study human-like metabolism. Moreover, the judgement of developmental parameters of the fish embryos enables for the simultaneous assessment of toxicity.
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13
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Viljanto M, Kaabia Z, Taylor P, Muir T, Habershon-Butcher J, Bailly-Chouriberry L, Scarth J. DIFFERENTIATION OF BOLDENONE ADMINISTRATION FROM EX VIVO TRANSFORMATION IN THE URINE OF CASTRATED MALE HORSES. Drug Test Anal 2022; 14:887-901. [PMID: 35178884 DOI: 10.1002/dta.3240] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/10/2022] [Indexed: 11/12/2022]
Affiliation(s)
| | - Zied Kaabia
- GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | | | - Tessa Muir
- British Horseracing Authority, London, UK.,USADA, Colorado Springs, Colorado, USA
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14
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Zhao HN, Tian Z, Kim KE, Wang R, Lam K, Kolodziej EP. Biotransformation of Current-Use Progestin Dienogest and Drospirenone in Laboratory-Scale Activated Sludge Systems Forms High-Yield Products with Altered Endocrine Activity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:13869-13880. [PMID: 34582191 DOI: 10.1021/acs.est.1c03805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dienogest (DIE) and drospirenone (DRO) are two fourth-generation synthetic progestins widely used as oral contraceptives. Despite their increasing detection in wastewaters and surface waters, their fate during biological wastewater treatment is unclear. Here, we investigated DIE and DRO biotransformation with representative activated sludge batch incubations and identified relevant transformation products (TPs) using high-resolution mass spectrometry. DIE exhibited slow biotransformation (16-30 h half-life) and proceeded through a quantitative aromatic dehydrogenation to form TP 309 (molar yields of ∼55%), an aromatic TP ∼30% estrogenic as 17β-estradiol. DRO experienced more rapid biotransformation (<0.5 h half-life), and 1,2-dehydrogenation formed the major TP 364 (molar yields of ∼40%), an antimineralocorticoid drug candidate named as spirorenone. Lactone ring hydrolysis was another important biotransformation pathway for DRO (molar yields of ∼20%) and generated pharmacologically inactive TP 384. Other minor pathways for DIE and DRO included hydroxylation, methoxylation, and 3-keto and C4(5) double-bond hydrogenation; distinct bioactivities are plausible for such TPs, including antigestagenic activity, antigonadotropic activity, and pregnancy inhibition effects. Thus, biotransformation products of DIE and DRO during wastewater treatment should be considered in environmental assessments of synthetic progestins, especially certain TPs such as the estrogenic TP 309 of DIE and the antimineralocorticoid spirorenone (TP 364) of DRO.
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Affiliation(s)
- Haoqi Nina Zhao
- Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington 98195, United States
- Center for Urban Waters, Tacoma, Washington 98421, United States
| | - Zhenyu Tian
- Center for Urban Waters, Tacoma, Washington 98421, United States
- Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, Washington 98421, United States
| | - Kelly E Kim
- Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, Washington 98421, United States
| | - Rui Wang
- Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington 98195, United States
- Center for Urban Waters, Tacoma, Washington 98421, United States
| | - Kenji Lam
- Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Edward P Kolodziej
- Department of Civil and Environmental Engineering, University of Washington, Seattle, Washington 98195, United States
- Center for Urban Waters, Tacoma, Washington 98421, United States
- Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, Washington 98421, United States
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15
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Trevisiol S, Moulard Y, Kaabia Z, Delcourt V, Loup B, Garcia P, Boyer S, Dauriac K, Groseille G, Rouger S, Narbe R, Popot MA, Bailly-Chouriberry L. LC-HRMS/MS study of the prodrug ciclesonide and its active metabolite desisobutyryl-ciclesonide in plasma after an inhalative administration to horses for doping control purposes. Drug Test Anal 2021; 14:252-261. [PMID: 34634175 DOI: 10.1002/dta.3174] [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: 05/28/2021] [Revised: 09/14/2021] [Accepted: 09/28/2021] [Indexed: 11/11/2022]
Abstract
Ciclesonide (CIC) is the first inhaled highly potent corticosteroid that does not cause any cortisol suppression. It has been developed for the treatment of asthma in human and more recently in equine. CIC is the active compound of Aservo® EquiHaler® (Boehringer Ingelheim Vetmedica GmbH), the pre-filled inhaler generating a medicated mist based on Soft Mist™ technology. This prodrug is rapidly converted to desisobutyryl-ciclesonide (des-CIC), the main pharmacologically active compound. Due to its anti-inflammatory properties, CIC is prohibited for use in horse competitions. To set up an appropriate control, the determination of detection times and screening limits are required. Therefore, a highly sensitive analytical method based on supported liquid extraction (SLE) combined with liquid chromatography-high resolution tandem mass spectrometry (LC-HRMS/MS) was developed to detect CIC and its active metabolite des-CIC in plasma. The lower limit of detection of CIC and des-CIC was approximately 1 pg/ml in plasma. After a pilot study conducted on a single horse at the recommended dose (eight actuations twice daily corresponding to 5.5 mg/day for the first 5 days, followed by 12 actuations once daily corresponding to 4.1 mg/day in the last 5 days), the same protocol was applied in the main study using six horses. In all horses, CIC and des-CIC levels were less than 5 and 10 pg/ml, respectively, at 36 h after the end of the administration. The outcome of this risk assessment study should be useful to draw any recommendations for horse competitions.
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Affiliation(s)
- Stéphane Trevisiol
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Yves Moulard
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Zied Kaabia
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Vivian Delcourt
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Benoit Loup
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Patrice Garcia
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Sophie Boyer
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Karine Dauriac
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | | | - Sébastien Rouger
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
| | - Ruediger Narbe
- Boehringer Ingelheim Vetmedica GmbH, Ingelheim am Rhein, Germany
| | - Marie-Agnès Popot
- GIE-LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France
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16
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Harding C, Viljanto M, Cutler C, Habershon-Butcher J, Biddle S, Scarth J. In vitro and in vivo metabolism of the anabolic-androgenic steroid oxandrolone in the horse. Drug Test Anal 2021; 14:39-55. [PMID: 34378336 DOI: 10.1002/dta.3139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 06/29/2021] [Accepted: 07/31/2021] [Indexed: 11/09/2022]
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17
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Guan F, You Y, Fay S, Li X, Robinson MA. Novel Algorithms for Comprehensive Untargeted Detection of Doping Agents in Biological Samples. Anal Chem 2021; 93:7746-7753. [PMID: 34018396 DOI: 10.1021/acs.analchem.1c01273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To address the limitations of current targeted analytical methods that can only detect known doping agents, a novel methodology that permits untargeted drug detection (UDD) has been developed to help in the fight against doping in sports. Fifty-seven drugs were spiked into blank equine plasma and were treated as unknowns since their exact masses and chromatographic retention times were not utilized for detection. The spiked drugs were extracted from the plasma samples and were analyzed using liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS). The acquired LC-HRMS raw data files were processed using metabolomic software for compound detection and identification. For UDD with the resultant data, a mathematical model was created, and two algorithms were generated to calculate the ratio of the mean (ROM) and outlier index (OLI). Using ROM and OLI, the majority of the 57 drugs were accurately detected by name (52 of 57) or chemical formula (1 of 57). The limit of detection for the drugs was from tens of picograms to nanograms per milliliter. Xenobiotics and endogenous substances relevant to doping control were also identified using this untargeted approach following their extraction from real-world race samples, thus validating the UDD methodology. To the authors' knowledge, this is the first completely UDD methodological approach and represents significant advance toward using artificial intelligence for the detection of both known and emerging doping agents in sports.
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Affiliation(s)
- Fuyu Guan
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, 382 West Street Road, Kennett Square, Pennsylvania 19348, United States.,Pennsylvania Equine Toxicology and Research Laboratory, 220 East Rosedale Avenue, West Chester, Pennsylvania 19382, United States
| | - Youwen You
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, 382 West Street Road, Kennett Square, Pennsylvania 19348, United States.,Pennsylvania Equine Toxicology and Research Laboratory, 220 East Rosedale Avenue, West Chester, Pennsylvania 19382, United States
| | - Savannah Fay
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, 382 West Street Road, Kennett Square, Pennsylvania 19348, United States.,Pennsylvania Equine Toxicology and Research Laboratory, 220 East Rosedale Avenue, West Chester, Pennsylvania 19382, United States
| | - Xiaoqing Li
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, 382 West Street Road, Kennett Square, Pennsylvania 19348, United States.,Pennsylvania Equine Toxicology and Research Laboratory, 220 East Rosedale Avenue, West Chester, Pennsylvania 19382, United States
| | - Mary A Robinson
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, 382 West Street Road, Kennett Square, Pennsylvania 19348, United States.,Pennsylvania Equine Toxicology and Research Laboratory, 220 East Rosedale Avenue, West Chester, Pennsylvania 19382, United States
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18
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Feeney W, Moorthy AS, Sisco E. Spectral trends in GC-EI-MS data obtained from the SWGDRUG mass spectral library and literature: A resource for the identification of unknown compounds. Forensic Chem 2020; 31:10.1016/j.forc.2022.100459. [PMID: 36578315 PMCID: PMC9793444 DOI: 10.1016/j.forc.2022.100459] [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: 12/05/2022]
Abstract
Rapid identification of new or emerging psychoactive substances remains a critical challenge in forensic drug chemistry laboratories. Current analytical protocols are well-designed for confirmation of known substances yet struggle when new compounds are encountered. Many laboratories initially attempt to classify new compounds using gas chromatography-electron ionization-mass spectrometry (GC-EI-MS). Though there is a large body of research focused on the analysis of illicit substances with GC-EI-MS, there is little high-level discussion of mass spectral trends for different classes of drugs. This manuscript compiles literature information and performs simple exploratory analyses on evaluated GC-EI-MS data to investigate mass spectral trends for illicit substance classes. Additionally, this work offers other important aspects: brief discussions of how each class of drugs is used; illustrations of EI mass spectra with proposed structures of commonly observed ions; and summaries of mass spectral trends that can help an analyst classify new illicit compounds.
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Affiliation(s)
- William Feeney
- Corresponding author at: Surface and Trace Chemical Analysis Group, Material Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA. (W. Feeney)
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19
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Kollmeier AS, Parr MK. Mass spectral fragmentation analyses of isotopically labelled hydroxy steroids using gas chromatography/electron ionization low-resolution mass spectrometry: A practical approach. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8769. [PMID: 32107808 DOI: 10.1002/rcm.8769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/26/2020] [Accepted: 02/27/2020] [Indexed: 06/10/2023]
Abstract
RATIONALE Gas chromatography coupled to electron ionization mass spectrometry (GC/EI-MS) is used for routine screening of anabolic steroids in many laboratories after the conversion of polar groups into trimethylsilyl (TMS) derivatives. The aim of this work is to elucidate the origin and formation of common and subclass-specific fragments in the mass spectra of TMS-derivatized steroids. Especially in the context of metabolite identification or analysis of designer drugs, isotopic labelling is helpful to better understand fragment ion generation, identify unknown compounds and update established screening methods. METHODS Stable isotope labelling procedures for the introduction of [2 H9 ]-TMS or 18 O were established to generate perdeuterotrimethylsilylated, mixed deuterated and 18 O-labelled derivatives for 13 different hydroxy steroids. Fragmentation proposals were substantiated by comparison of the abundances of isotopically labelled and unlabelled fragment ions in unit mass resolution GC/MS. Specific fragmentations were also investigated by high-resolution MS (GC/quadrupole time-of-flight MS, GC/QTOFMS). RESULTS Methyl radical cleavage occurs primarily from the TMS groups in saturated androstanes and from the steroid nucleus in the case of enol-TMS of oxo or α,β-unsaturated steroid ketones. Loss of trimethylsilanol (TMSOH) is dependent on steric factors, degree of saturation of the steroid backbone and the availability of a hydrogen atom and TMSO group in the 1,3-diaxial position. For the formation of the [M - 105]+ fragment ion, methyl radical cleavage predominates from the angular methyl groups in position C-18 or C-19 and is independent of the site of TMSOH loss. The common [M - 15 - 76]+ fragment ion was found in low abundance and identified as [M - CH3 - (CH3 )2 SiH - OH]+ . For the different steroid subclasses further diagnostic fragment ions were discussed and structure proposals postulated. CONCLUSIONS Stable isotope labelling of oxo groups as well as derivatization with deuterated TMS groups enables the detection of structure-related fragment ion generation in unit mass resolution GC/EI-MS. This may in turn allow us to propose isomeric assignments that are otherwise almost impossible using MS only.
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Affiliation(s)
| | - Maria Kristina Parr
- Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195, Berlin, Germany
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20
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Simple Synthesis of 17-β- O-hemisuccinate of Stanozolol for Immunoanalytical Methods. Molecules 2020; 25:molecules25092019. [PMID: 32357494 PMCID: PMC7248714 DOI: 10.3390/molecules25092019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/21/2020] [Accepted: 04/24/2020] [Indexed: 12/04/2022] Open
Abstract
The use of doping in sports is a global problem that affects athletes around the world. Among the different methods developed to detect doping agents in biological samples, there are antibody-based methods that need an appropriate hapten design. Steroids with a hydroxyl group can be converted to the corresponding hemisuccinates. A novel approach to the synthesis of 17β-O-hemisuccinate of the common doping agent stanozolol is described here. Acylation of stanozolol with methyl 4-chloro-4-oxobutyrate/4-dimethylaminopyridine, followed by mild alkaline hydrolysis with methanolic sodium hydroxide at room temperature, gave the simultaneous protection and deprotection of pyrazole-nitrogen atoms. The proposed new synthetic method allows the desired hemisuccinate derivative to be obtained in only two steps, and with a good total yield starting from stanozolol.
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21
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Walpurgis K, Scheiff AB, Welz M, Müller‐Reul J, Webborn N, Görgens C, Guddat S, Fußhöller G, Dib J, Thevis M. Pilot study on the effects of intravesical oxybutynin hydrochloride instillations on the validity of doping control urine samples. Drug Test Anal 2019; 11:1755-1760. [DOI: 10.1002/dta.2705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/17/2019] [Accepted: 09/23/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Katja Walpurgis
- Center for Preventive Doping Research/Institute of BiochemistryGerman Sport University Cologne Cologne Germany
| | | | - Meike Welz
- National Anti Doping Agency (NADA), Bonn Germany
| | | | - Nick Webborn
- School of Sport and Service Management University of Brighton, Brighton East Sussex UK
- International Paralympic Committee Bonn Germany
| | - Christian Görgens
- Center for Preventive Doping Research/Institute of BiochemistryGerman Sport University Cologne Cologne Germany
| | - Sven Guddat
- Center for Preventive Doping Research/Institute of BiochemistryGerman Sport University Cologne Cologne Germany
| | - Gregor Fußhöller
- Center for Preventive Doping Research/Institute of BiochemistryGerman Sport University Cologne Cologne Germany
| | - Josef Dib
- Center for Preventive Doping Research/Institute of BiochemistryGerman Sport University Cologne Cologne Germany
| | - Mario Thevis
- Center for Preventive Doping Research/Institute of BiochemistryGerman Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn Germany
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22
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Viljanto M, Kicman AT, Walker CJ, Wolff K, Muir T, Hincks P, Biddle S, Scarth J. Bioformation of boldenone and related precursors/metabolites in equine feces and urine, with relevance to doping control. Drug Test Anal 2019; 12:215-229. [DOI: 10.1002/dta.2706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 09/04/2019] [Accepted: 09/26/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Marjaana Viljanto
- LGC, Fordham Cambridgeshire UK
- Drug Control Centre, Analytical and Environmental Sciences Research DivisionKing's College London UK
| | - Andrew T. Kicman
- Drug Control Centre, Analytical and Environmental Sciences Research DivisionKing's College London UK
| | - Christopher J. Walker
- Drug Control Centre, Analytical and Environmental Sciences Research DivisionKing's College London UK
| | - Kim Wolff
- Drug Control Centre, Analytical and Environmental Sciences Research DivisionKing's College London UK
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23
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Analysis of steroids in urine by gas chromatography-capillary photoionization-tandem mass spectrometry. J Chromatogr A 2019; 1598:175-182. [PMID: 31003716 DOI: 10.1016/j.chroma.2019.03.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/18/2019] [Accepted: 03/28/2019] [Indexed: 01/19/2023]
Abstract
A new heated capillary photoionization (CPI) ion source design was developed to photoionize analytes inside a transfer capillary between a gas chromatograph (GC) and a mass spectrometer (MS). The CPI setup included a wide, oval-shaped vacuum-ultraviolet (VUV) transparent magnesium fluoride (MgF2) window to maximize photoionization efficiency and thus sensitivity. The source contained a nitrogen housing around the ionization chamber inlet to avoid undesirable hydrolysis and oxidation reactions with ambient air and to maximize the proportion of formed molecular radical cations of analytes. The feasibility of the ion source was studied by analyzing 18 endogenous steroids in urine as their trimethylsilyl (TMS) derivatives with gas chromatography-tandem mass spectrometry (GC-MS/MS). The method was validated and applied to human urine samples. To our best knowledge, this is the first time that a capillary photoionization ion source has been applied for quantitative analysis of biological samples. The GC-CPI-MS/MS method showed good chromatographic resolution (peak half-widths between 3.1 to 5.3 s), acceptable linearity (coefficient of determination between 0.981 to 0.996), and repeatability (relative standard deviation (RSD%) between 5 to 18%). Limits of detection (LOD) were between 2 to 100 pg mL-1 and limits of quantitation (LOQ) were between 0.05 to 2 ng mL-1. In total, 15 steroids were quantified either as a free steroid or glucuronide conjugate from the urine of volunteers. The new CPI source design showed excellent sensitivity for analysis of steroids in complex biological samples.
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24
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Viljanto MJ, Kicman AT, Walker CJ, Parkin MC, Wolff K, Pearce CM, Scarth J. Elucidation of the biosynthetic pathways of boldenone in the equine testis. Steroids 2019; 146:79-91. [PMID: 30951760 DOI: 10.1016/j.steroids.2019.03.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/20/2019] [Accepted: 03/26/2019] [Indexed: 11/28/2022]
Abstract
Boldenone is an anabolic-androgenic steroid that is prohibited in equine sports. Urine from the uncastrated male horse contains boldenone that is thought to be of endogenous origin and thus a threshold ('cut-off') concentration has been adopted internationally for free and conjugated boldenone to help distinguish cases of doping from its natural production. The testis is likely to be a source of boldenone. Qualitative analysis was performed on extracts of equine testicular homogenates (n = 3 horses) incubated non-spiked and in the presence of its potential precursors using liquid chromatography tandem mass spectrometry (LC-MS/MS) and LC high resolution mass spectrometry (LC-HRMS). Samples were analysed both underivatised and derivatised to increase the certainty of identification. In addition to previously reported endogenous steroids, analysis of non-spiked testicular tissue samples demonstrated the presence of boldenone and boldienone at trace levels in the equine testis. Incubation of homogenates with deuterium or carbon isotope labelled testosterone and androstenedione resulted in the matching stable isotope analogues of boldenone and boldienone being formed. Additionally, deuterium and carbon labelled 2-hydroxyandrostenedione was detected, raising the possibility that this steroid is a biosynthetic intermediate. In conclusion, boldenone and boldienone are naturally present in the equine testis, with the biosynthesis of these steroids arising from the conversion of testosterone and androstenedione. However, additional work employing larger numbers of animals, further enzyme kinetic experiments and pure reference standards for 2-OH androstenedione isomers would be required to better characterize the pathways involved in these transformations.
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Affiliation(s)
- Marjaana J Viljanto
- LGC, Fordham, Cambridgeshire, UK; Drug Control Centre, Department of Analytical, Environmental and Forensic Sciences, King's College London, UK.
| | - Andrew T Kicman
- Drug Control Centre, Department of Analytical, Environmental and Forensic Sciences, King's College London, UK
| | - Christopher J Walker
- Drug Control Centre, Department of Analytical, Environmental and Forensic Sciences, King's College London, UK
| | - Mark C Parkin
- Drug Control Centre, Department of Analytical, Environmental and Forensic Sciences, King's College London, UK; Eurofins Forensic Services, Teddington, London, UK
| | - Kim Wolff
- Drug Control Centre, Department of Analytical, Environmental and Forensic Sciences, King's College London, UK
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Mariano F, Mella A, Vincenti M, Biancone L. Furosemide as a functional marker of acute kidney injury in ICU patients: a new role for an old drug. J Nephrol 2019; 32:883-893. [PMID: 31090022 DOI: 10.1007/s40620-019-00614-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/16/2019] [Indexed: 12/21/2022]
Abstract
New pharmacokinetics insight suggests that the furosemide pharmacology occurring in ICU patients with AKI is similar, but not equal to that described in chronic stable renal patients. Even if the diuretic response to furosemide is expressed by a steep dose-response curve positively correlated with renal function, pharmacodynamic limitations occur when creatinine clearance is < 20 ml/min or urine output is < 500 ml/12 h. In such cases, other factors specifically due to acute tubular injury can interfere with the furosemide-induced diuretic output. As modality of administration recent reports and metanalysis, even if not conclusive, suggest that for the same given dose a continuous infusion of furosemide was superior in diuretic response. For septic shock patients on CVVHDF where treatment adds an additional clearance of furosemide the maximum diuretic response is achieved by a continuous infusion of 20 mg/h of furosemide. At this infusion rate the reached plasma level was < 20 mg/L, a range considered safe and not ototoxic. Therefore, the severity of AKI establishes whether a patient will respond to furosemide. In this review we summarized all these recent updates, also suggesting that the diuretic response under continuous infusion may allow assessing glomerular and tubular functions with increased reliability than a bolus dose. However, validation studies are still needed to support continuous infusion as a stress test.
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Affiliation(s)
- Filippo Mariano
- Nephrology, Dialysis and Transplantation U, Department of Medical Sciences, CTO Hospital, University of Turin, City of Health and Science, Via G. Zuretti 29, 10126, Turin, Italy.
| | - Alberto Mella
- Nephrology, Dialysis and Transplantation U, Department of Medical Sciences, CTO Hospital, University of Turin, City of Health and Science, Via G. Zuretti 29, 10126, Turin, Italy
| | - Marco Vincenti
- Department of Chemistry, University of Turin, Turin, Italy
| | - Luigi Biancone
- Nephrology, Dialysis and Transplantation U, Department of Medical Sciences, CTO Hospital, University of Turin, City of Health and Science, Via G. Zuretti 29, 10126, Turin, Italy
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26
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Tobias HJ, Jones A, Spanjers C, Bowers L, Brenna JT. Low Temperature Catalytic Combustion Reactors for High Precision Carbon Isotope Measurements in Gas Chromatography Combustion Isotope Ratio Mass Spectrometry. Anal Chem 2019; 91:2901-2907. [DOI: 10.1021/acs.analchem.8b05043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Herbert J. Tobias
- Dell Pediatric Research Institute, Dell Medical School, University of Texas at Austin, 1400 Barbara Jordan Boulevard, Austin, Texas 78723, United States
| | - Andrew Jones
- Activated Research Company, 7561 Corporate Way, Eden Prairie, Minnesota 55344, United States
| | - Charlie Spanjers
- Activated Research Company, 7561 Corporate Way, Eden Prairie, Minnesota 55344, United States
| | - Larry Bowers
- LDBowers, LLC, Southern Pines, North Carolina 28387, United States
| | - J. Thomas Brenna
- Dell Pediatric Research Institute, Dell Medical School, University of Texas at Austin, 1400 Barbara Jordan Boulevard, Austin, Texas 78723, United States
- Department of Chemistry, College of Natural Sciences, University of Texas at Austin, Austin, Texas 78712-1224, United States
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Abushareeda W, Tienstra M, Lommen A, Blokland M, Sterk S, Kraiem S, Horvatovich P, Nielen M, Al-Maadheed M, Georgakopoulos C. Comparison of gas chromatography/quadrupole time-of-flight and quadrupole Orbitrap mass spectrometry in anti-doping analysis: I. Detection of anabolic-androgenic steroids. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2018; 32:2055-2064. [PMID: 30216576 DOI: 10.1002/rcm.8281] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 08/12/2018] [Accepted: 09/07/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE The World Anti-Doping Agency (WADA) encourages drug-testing laboratories to develop screening methods that can detect as many doping substances as possible in urine. The use of full-scan high-resolution acquisition (FS/HR) with gas chromatography/mass spectrometry (GC/MS) for the detection of known and unknown trimethylsilyl (TMS) derivatives of anabolic-androgenic steroids (AAS) provides anti-doping testing bodies with a new analytical tool. METHODS The AAS were extracted from urine samples by generic liquid-liquid extraction, after enzymatic hydrolysis, and TMS derivatization. The extracted urine was analyzed by GC/Q-TOF and GC/Q-Orbitrap to compare the performance of the two instrument types for the detection of 46 AAS in human urine. The quantitation of endogenous anabolic steroids and the ability of the two analytical platforms to comply with the requirements for testing as part of the WADA Athlete Biological Passport (ABP) were also assessed. RESULTS The data presented show that the analytical performance for both instruments complies with the WADA specifications. The limits of detection (LODs) for both instruments are well below the WADA 50% Minimum Required Performance Levels. The mass errors in the current study for the GC/Q-Orbitrap platform are lower than those obtained for the GC/Q-TOF instrument. CONCLUSIONS The data presented herein proved that both molecular profiling platforms can be used for antidoping screening. The mass accuracies are excellent in both instruments; however, the GC/Q-Orbitrap performs better as it provides higher resolution than the GC/Q-TOF platform.
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Affiliation(s)
- Wadha Abushareeda
- Anti-Doping Lab Qatar, Sports City Road, P.O. Box 27775, Sports City, Doha, Qatar
| | - Marc Tienstra
- RIKILT, Wageningen University, P.O. Box 230, 6700 AE, Wageningen, The Netherlands
| | - Arjen Lommen
- RIKILT, Wageningen University, P.O. Box 230, 6700 AE, Wageningen, The Netherlands
| | - Marco Blokland
- RIKILT, Wageningen University, P.O. Box 230, 6700 AE, Wageningen, The Netherlands
| | - Saskia Sterk
- RIKILT, Wageningen University, P.O. Box 230, 6700 AE, Wageningen, The Netherlands
| | - Suhail Kraiem
- Anti-Doping Lab Qatar, Sports City Road, P.O. Box 27775, Sports City, Doha, Qatar
| | - Peter Horvatovich
- University of Groningen, P.O. Box 196, 9700 AD, Groningen, The Netherlands
| | - Michel Nielen
- RIKILT, Wageningen University, P.O. Box 230, 6700 AE, Wageningen, The Netherlands
| | - Muhammad Al-Maadheed
- Anti-Doping Lab Qatar, Sports City Road, P.O. Box 27775, Sports City, Doha, Qatar
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28
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Kaabia Z, Laparre J, Cesbron N, Le Bizec B, Dervilly-Pinel G. Comprehensive steroid profiling by liquid chromatography coupled to high resolution mass spectrometry. J Steroid Biochem Mol Biol 2018; 183:106-115. [PMID: 30196848 DOI: 10.1016/j.jsbmb.2018.06.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/26/2018] [Accepted: 06/04/2018] [Indexed: 10/28/2022]
Abstract
A steroidomics workflow has been developed in the objective of monitoring a wide range (n >150) of steroids in urine. The proposed workflow relies on the optimization of an adequate SPE extraction step followed by an UHPLC-HRMS/MS simultaneous analysis of both free and conjugated forms of C18, C19 and C21 steroid hormones. On the basis of 44 selected steroids, representative of main classes of steroids constituting the steroidome, the performances of the developed workflow were evaluated in terms of selectivity, repeatability (< 13%) and linearity (R2> 0.985 in the concentration range [0.01-10 ng/mL]). As metabolites identification and characterization constitute the bottleneck of such profiling approaches, a homemade database was created encompassing a large number of characterized free and conjugated steroids (n> 150) for putative steroid-like biomarkers identification purposes. The efficiency of the workflow in highlighting fine modifications within the urinary steroidome was assessed in the frame of an anabolic treatment involving an intra-muscular administration of boldenone undecylenate (2 mg/kg) to veals (n=6) and the investigation of potential steroid biomarkers. Besides monitoring known phase II metabolites of boldenone in the bovine specie, namely, boldenone glucuronide and sulfate, the applied strategy also permitted to observe, upon boldenone administration, a modified profile of epiboldenone glucuronide. Furthermore, 31 signals corresponding to non-identified steroid species could also be highlighted as impacted upon the exogenous steroid treatment. This study is the first to simultaneously investigate both free and conjugated C18, C19 and C21 steroid hormones in their native form using UHPLC-HRMS/MS and allowing their comprehensive profiling. This strategy was probed in-vivo.
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Affiliation(s)
- Zied Kaabia
- Laberca, Oniris, INRA, Université Bretagne Loire, 44307, Nantes-FR, France
| | - Jérôme Laparre
- Laberca, Oniris, INRA, Université Bretagne Loire, 44307, Nantes-FR, France
| | - Nora Cesbron
- Laberca, Oniris, INRA, Université Bretagne Loire, 44307, Nantes-FR, France
| | - Bruno Le Bizec
- Laberca, Oniris, INRA, Université Bretagne Loire, 44307, Nantes-FR, France
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29
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Shackleton C, Pozo OJ, Marcos J. GC/MS in Recent Years Has Defined the Normal and Clinically Disordered Steroidome: Will It Soon Be Surpassed by LC/Tandem MS in This Role? J Endocr Soc 2018. [PMID: 30094411 DOI: 10.1210/js.2018-00135.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Gas chromatography/mass spectrometry (GC/MS) has been used for steroid analysis since the 1960s. The advent of protective derivatization, capillary columns, and inexpensive electron ionization bench-top single quadrupole soon made it the method of choice for studying disorders of steroid synthesis and metabolism. However, the lengthy sample workup prevented GC/MS from becoming routine for steroid hormone measurement, which was dominated by radioimmunoassay. It was the emergence of liquid chromatography/tandem MS (LC/MS/MS) that sparked a renewed interest in GC/MS for the multicomponent analysis of steroids. GC/MS is excellent at providing an integrated picture of a person's steroid metabolome, or steroidome, as we term it. We review the recent work on newly described disorders and discuss the technical advances such as GC coupling to triple quadrupole and ion trap analyzers, two-dimensional GC/MS, and alternative ionization and detection systems such as atmospheric pressure chemical ionization (APCI) and time of flight. We believe that no novel GC/MS-based technique has the power of GC(electron ionization)/MS/MS as a "discovery tool," although APCI might provide ultimate sensitivity, which might be required in tissue steroidomics. Finally, we discuss the role of LC/MS/MS in steroidomics. This remains a challenge but offers shorter analysis times and advantages in the detection and discovery of steroids with a known structure. We describe recent advances in LC/MS steroidomics of hydrolyzed and intact steroid conjugates and suggest the technique is catching up with GC/MS in this area. However, in the end, both techniques will likely remain complementary and both should be available in advanced analytical laboratories.
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Affiliation(s)
- Cedric Shackleton
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom.,UCSF Benioff Children's Hospital Oakland Research Institute, Oakland, California
| | - Oscar J Pozo
- Integrative Pharmacology and Systems Neuroscience Research Group, Institut Hospital del Mar d'Investigacions Mèdiques-Hospital del Mar Research Institute, Barcelona, Spain
| | - Josep Marcos
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
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30
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Shackleton C, Pozo OJ, Marcos J. GC/MS in Recent Years Has Defined the Normal and Clinically Disordered Steroidome: Will It Soon Be Surpassed by LC/Tandem MS in This Role? J Endocr Soc 2018; 2:974-996. [PMID: 30094411 PMCID: PMC6080058 DOI: 10.1210/js.2018-00135] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/02/2018] [Indexed: 12/17/2022] Open
Abstract
Gas chromatography/mass spectrometry (GC/MS) has been used for steroid analysis since the 1960s. The advent of protective derivatization, capillary columns, and inexpensive electron ionization bench-top single quadrupole soon made it the method of choice for studying disorders of steroid synthesis and metabolism. However, the lengthy sample workup prevented GC/MS from becoming routine for steroid hormone measurement, which was dominated by radioimmunoassay. It was the emergence of liquid chromatography/tandem MS (LC/MS/MS) that sparked a renewed interest in GC/MS for the multicomponent analysis of steroids. GC/MS is excellent at providing an integrated picture of a person's steroid metabolome, or steroidome, as we term it. We review the recent work on newly described disorders and discuss the technical advances such as GC coupling to triple quadrupole and ion trap analyzers, two-dimensional GC/MS, and alternative ionization and detection systems such as atmospheric pressure chemical ionization (APCI) and time of flight. We believe that no novel GC/MS-based technique has the power of GC(electron ionization)/MS/MS as a “discovery tool,” although APCI might provide ultimate sensitivity, which might be required in tissue steroidomics. Finally, we discuss the role of LC/MS/MS in steroidomics. This remains a challenge but offers shorter analysis times and advantages in the detection and discovery of steroids with a known structure. We describe recent advances in LC/MS steroidomics of hydrolyzed and intact steroid conjugates and suggest the technique is catching up with GC/MS in this area. However, in the end, both techniques will likely remain complementary and both should be available in advanced analytical laboratories.
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Affiliation(s)
- Cedric Shackleton
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, United Kingdom.,UCSF Benioff Children's Hospital Oakland Research Institute, Oakland, California
| | - Oscar J Pozo
- Integrative Pharmacology and Systems Neuroscience Research Group, Institut Hospital del Mar d'Investigacions Mèdiques-Hospital del Mar Research Institute, Barcelona, Spain
| | - Josep Marcos
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
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31
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Alcántara-Durán J, Moreno-González D, Beneito-Cambra M, García-Reyes JF. Dilute-and-shoot coupled to nanoflow liquid chromatography high resolution mass spectrometry for the determination of drugs of abuse and sport drugs in human urine. Talanta 2018; 182:218-224. [PMID: 29501143 DOI: 10.1016/j.talanta.2018.01.081] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/25/2018] [Accepted: 01/29/2018] [Indexed: 02/08/2023]
Abstract
In this work, a sensitive nanoflow liquid chromatography high-resolution mass spectrometry screening method has been developed for the determination of multiclass drugs of abuse and sport drugs in human urine. 81 drugs belonging to different multiclass pharmaceuticals were targeted. The method is based on the use of a nanoLC column (75 µm × 150 mm, 3 µm particle size and 100 Å pore) with the nanospray emitter tip integrated so that dead volumes are significantly minimized. Data acquisition method included both full-scan and all ion fragmentation experiments using an Orbitrap analyser (Q-Exactive) operated in the positive ionization mode. To increase laboratory throughput, a dilute-and-shoot methodology has been tested and proposed, based solely on direct urine dilution without further sample workup. Matrix effects were evaluated, showing a negligible effect for all studied compounds when a dilution 1:50 was implemented. Despite this high-dilution factor, limits of quantification were still satisfactory, with values below 5 µg L-1 in most cases, being lower than their minimum required performance limits correspond established by the World Anti-Doping Agency. Therefore, the use of the dilute-and-shoot method with the enhanced sensitivity provided by nanoflow LC setup could be useful tool for the determination of studied compounds in drug testing, thus increasing laboratory performance, because a minimum sample treatment steps are required.
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Affiliation(s)
- Jaime Alcántara-Durán
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, 23071 Jaén, Spain
| | - David Moreno-González
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, 23071 Jaén, Spain.
| | - Miriam Beneito-Cambra
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, 23071 Jaén, Spain
| | - Juan F García-Reyes
- Analytical Chemistry Research Group, Department of Physical and Analytical Chemistry, University of Jaén, 23071 Jaén, Spain
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32
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Tobias HJ, Brenna JT. Cryofocus fast gas chromatography combustion isotope ratio mass spectrometry for rapid detection of synthetic steroid use in sport doping. Analyst 2018; 143:1124-1132. [DOI: 10.1039/c7an01398a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sports doping requires high precision carbon isotope ratio (CIR) analysis of endogenous steroids using gas chromatography-combustion isotope ratio mass spectrometry (GCC-IRMS), however methods are relatively slow and cumbersome. In this work, speed of analysis is improved.
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Affiliation(s)
- Herbert J. Tobias
- Division of Nutritional Sciences
- Cornell University
- Ithaca
- USA
- Dell Pediatric Research Institute
| | - J. Thomas Brenna
- Division of Nutritional Sciences
- Cornell University
- Ithaca
- USA
- Dell Pediatric Research Institute
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33
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Waller CC, McLeod MD. A review of designer anabolic steroids in equine sports. Drug Test Anal 2016; 9:1304-1319. [DOI: 10.1002/dta.2112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/05/2016] [Accepted: 10/07/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Christopher C. Waller
- Research School of Chemistry; Australian National University; Canberra ACT Australia
| | - Malcolm D. McLeod
- Research School of Chemistry; Australian National University; Canberra ACT Australia
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34
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Balcells G, Matabosch X, Ventura R. Detection of stanozolol O-
and N-
sulfate metabolites and their evaluation as additional markers in doping control. Drug Test Anal 2016; 9:1001-1010. [DOI: 10.1002/dta.2107] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/15/2016] [Accepted: 10/04/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Georgina Balcells
- Bioanalysis Research Group, IMIM; Hospital del Mar Medical Research Institute; Doctor Aiguader 88 08003 Barcelona Spain
- Department of Experimental and Health Sciences; Universitat Pompeu Fabra; Doctor Aiguader 88 08003 Barcelona Spain
| | - Xavier Matabosch
- Bioanalysis Research Group, IMIM; Hospital del Mar Medical Research Institute; Doctor Aiguader 88 08003 Barcelona Spain
| | - Rosa Ventura
- Bioanalysis Research Group, IMIM; Hospital del Mar Medical Research Institute; Doctor Aiguader 88 08003 Barcelona Spain
- Department of Experimental and Health Sciences; Universitat Pompeu Fabra; Doctor Aiguader 88 08003 Barcelona Spain
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35
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Ayotte C, Sylvestre A, Charlebois A, Poirier D. Detection of 5α-androst-2-en-17-one and variants: Identification of main urinary metabolites in human urine samples by GC-MS and NMR. Drug Test Anal 2016; 8:1174-1185. [DOI: 10.1002/dta.2105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/02/2016] [Accepted: 10/04/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Christiane Ayotte
- INRS-Institut Armand Frappier; Laboratoire de controle du dopage; Laval Quebec Canada
| | | | - Alain Charlebois
- Centre Hospitalier de l'Université Laval (CHUL); Endocrinologie et néphrologie; Québec Quebec Canada
| | - Donald Poirier
- Centre Hospitalier de l'Université Laval (CHUL); Endocrinologie et néphrologie; Québec Quebec Canada
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36
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Ruhaak LR, van der Burgt YE, Cobbaert CM. Prospective applications of ultrahigh resolution proteomics in clinical mass spectrometry. Expert Rev Proteomics 2016; 13:1063-1071. [DOI: 10.1080/14789450.2016.1253477] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- L. Renee Ruhaak
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Yuri E.M. van der Burgt
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, the Netherlands
| | - Christa M. Cobbaert
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands
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37
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Marcos J, Pozo OJ. Current LC-MS methods and procedures applied to the identification of new steroid metabolites. J Steroid Biochem Mol Biol 2016; 162:41-56. [PMID: 26709140 DOI: 10.1016/j.jsbmb.2015.12.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/25/2015] [Accepted: 12/11/2015] [Indexed: 12/31/2022]
Abstract
The study of the metabolism of steroids has a long history; from the first characterizations of the major metabolites of steroidal hormones in the pre-chromatographic era, to the latest discoveries of new forms of excretions. The introduction of mass spectrometers coupled to gas chromatography at the end of the 1960's represented a major breakthrough for the elucidation of new metabolites. In the last two decades, this technique is being complemented by the use of liquid chromatography-mass spectrometry (LC-MS). In addition of becoming fundamental in clinical steroid determinations due to its excellent specificity, throughput and sensitivity, LC-MS has emerged as an exceptional tool for the discovery of new steroid metabolites. The aim of the present review is to provide an overview of the current LC-MS procedures used in the quest of novel metabolic products of steroidal hormones and exogenous steroids. Several aspects regarding LC separations are first outlined, followed by a description of the key processes that take place in the mass spectrometric analysis, i.e. the ionization of the steroids in the source and the fragmentation of the selected precursor ions in the collision cell. The different analyzers and approaches employed together with representative examples of each of them are described. Special emphasis is placed on triple quadrupole analyzers (LC-MS/MS), since they are the most commonly employed. Examples on the use of precursor ion scan, neutral loss scan and theoretical selected reaction monitoring strategies are also explained.
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Affiliation(s)
- Josep Marcos
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain; Toxicology Department, Labco Diagnostics, Verge de Guadalupe 18, 08950 Esplugues de Llobregat, Spain
| | - Oscar J Pozo
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain.
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38
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Waller CC, Cawley AT, Suann CJ, Ma P, McLeod MD. In vivo and in vitro metabolism of the designer anabolic steroid furazadrol in thoroughbred racehorses. J Pharm Biomed Anal 2016; 124:198-206. [DOI: 10.1016/j.jpba.2016.02.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 02/22/2016] [Accepted: 02/23/2016] [Indexed: 10/22/2022]
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39
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Liu Y, Lu J, Yang S, Zhang Q, Xu Y. New drostanolone metabolites in human urine by liquid chromatography time-of-flight tandem mass spectrometry and their application for doping control. Steroids 2016; 108:61-7. [PMID: 26826321 DOI: 10.1016/j.steroids.2016.01.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 01/08/2016] [Accepted: 01/16/2016] [Indexed: 11/20/2022]
Abstract
Drostanolone is one of the most frequently detected anabolic androgenic steroids in doping control analysis. Here, we studied drostanolone urinary metabolic profiles using liquid chromatography quadruple time of flight mass spectrometry (LC-QTOF-MS) in full scan and targeted MS/MS modes with accurate mass measurement. The drug was administered to one healthy male volunteer and liquid-liquid extraction along with direct-injection were used to analyze urine samples. Chromatographic peaks for potential metabolites were identified with the theoretical [M-H](-) as a target ion in a full scan experiment and actual deprotonated ions were analyzed in targeted MS/MS mode. Eleven metabolites including five new sulfates, five glucuronide conjugates, and one free metabolite were confirmed for drostanolone. Due to the absence of useful fragment ions to illustrate the steroid ring structure of drostanolone phase II metabolites, gas chromatography mass spectrometry (GC-MS) was used to obtain structural details of the trimethylsilylated phase I metabolite released after enzymatic hydrolysis and a potential structure was proposed using a combined MS approach. Metabolite detection times were recorded and S4 (2α-methyl-5α-androstan-17-one-6β-ol-3α-sulfate) and G1 (2α-methyl-5α-androstan-17-one-3α-glucuronide) were thought to be new potential biomarkers for drostanolone misuse which can be detected up to 24days by liquid-liquid extraction and 7days by direct-injection analysis after intramuscular injection. S4 and G1 were also detected in two drostanolone-positive routine urine samples.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Science, Peking University Health Science Center, Beijing 100191, PR China
| | - Jianghai Lu
- National Anti-Doping Laboratory, China Anti-Doping Agency, 1st Anding Road, ChaoYang District, Beijing 100029, PR China.
| | - Sheng Yang
- National Anti-Doping Laboratory, China Anti-Doping Agency, 1st Anding Road, ChaoYang District, Beijing 100029, PR China
| | - Qingying Zhang
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Science, Peking University Health Science Center, Beijing 100191, PR China.
| | - Youxuan Xu
- National Anti-Doping Laboratory, China Anti-Doping Agency, 1st Anding Road, ChaoYang District, Beijing 100029, PR China.
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40
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Golubović JB, Otašević BM, Protić AD, Stanković AM, Zečević ML. Liquid chromatography/tandem mass spectrometry for simultaneous determination of undeclared corticosteroids in cosmetic creams. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:2319-2327. [PMID: 26563702 DOI: 10.1002/rcm.7403] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 09/19/2015] [Accepted: 09/20/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE Undeclared corticosteroids in creams intended for frequent use might cause serious side-effects, especially in children. In order to prevent this or find the cause, it was essential to develop a method for quick detection and quantification of low levels of corticosteroids. METHODS Eleven corticosteroids were used in this study: prednisolone, methylprednisolone, prednisolone-21-acetate, fluocinolone acetonide, fluocinolone acetonide-21-acetate, hydrocortisone-21-acetate, dexamethasone, betamethasone, betamethasone dipropionate, clobetasol propionate and triamcinolone. Separation was achieved via liquid chromatography (LC), and mass spectrometric analysis was conducted by electrospray ionization triple-quadrupole mass spectrometry (MS/MS) in the multiple reaction monitoring mode using corticosterone as internal standard. RESULTS Good separation by using a gradient-elution LC/MS/MS method with run time of 25 min enabled the use of a segmented detection method and consecutive decrease in detection limits. The proposed method has been validated in the linearity range of 10-1000 ng/mL with coefficients of determination higher than 0.990. The method has shown to have very low limits of quantification (0.75-3 ng/mL) with satisfactory precision and accuracy for each of the corticosteroids. CONCLUSIONS An LC/MS/MS method for the rapid and simultaneous determination of low levels of eleven topical corticosteroids in creams was developed, optimized and validated. The proposed method can be used for testing of different products indicated for the treatment of atopic dermatitis, including "natural products", and "herbal creams" with "miraculous effects".
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Affiliation(s)
- Jelena B Golubović
- University of Belgrade-Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
| | - Biljana M Otašević
- University of Belgrade-Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
| | - Ana D Protić
- University of Belgrade-Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
| | - Aleksandra M Stanković
- University of Belgrade-Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
| | - Mira L Zečević
- University of Belgrade-Faculty of Pharmacy, Department of Drug Analysis, Vojvode Stepe 450, Belgrade, Serbia
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41
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Okano M, Sato M, Kojima A, Kageyama S. Determination of mepitiostane metabolites in human urine by liquid chromatography/tandem mass spectrometry for sports drug testing. J Pharm Biomed Anal 2015; 115:236-44. [DOI: 10.1016/j.jpba.2015.07.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 07/16/2015] [Accepted: 07/17/2015] [Indexed: 10/23/2022]
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42
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Cha E, Kim S, Kim HJ, Lee KM, Kim KH, Kwon OS, Lee J. Sensitivity of GC-EI/MS, GC-EI/MS/MS, LC-ESI/MS/MS, LC-Ag+CIS/MS/MS, and GC-ESI/MS/MS for analysis of anabolic steroids in doping control. Drug Test Anal 2015; 7:1040-9. [DOI: 10.1002/dta.1906] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/21/2015] [Accepted: 09/21/2015] [Indexed: 01/17/2023]
Affiliation(s)
- Eunju Cha
- Doping Control Center, Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
- Department of Chemistry, Research Institute for Natural Sciences; Korea University; 145, Anam-ro, Seongbuk-gu Seoul 136-701 Korea
| | - Sohee Kim
- Doping Control Center, Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Ho Jun Kim
- Doping Control Center, Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Kang Mi Lee
- Doping Control Center, Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Ki Hun Kim
- Doping Control Center, Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Oh-Seung Kwon
- Doping Control Center, Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Jaeick Lee
- Doping Control Center, Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
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43
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Baume N, Geyer H, Vouillamoz M, Grisdale R, Earl M, Aguilera R, Cowan DA, Ericsson M, Gmeiner G, Kwiatkowska D, Kioukia-Fougia N, Molina A, Ruivo J, Segura J, Van Eenoo P, Jan N, Robinson N, Saugy M. Evaluation of longitudinal steroid profiles from male football players in UEFA competitions between 2008 and 2013. Drug Test Anal 2015; 8:603-12. [DOI: 10.1002/dta.1851] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 07/10/2015] [Accepted: 07/11/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Norbert Baume
- Swiss Laboratory for Doping Analyses; University Center of Legal Medicine, Geneva and Lausanne; Chemin des Croisettes 22 1066 Epalinges Switzerland
| | - Hans Geyer
- Institute of Biochemistry - Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | | | | | - Mike Earl
- Union of European Football Associations; Nyon Switzerland
| | - Rodrigo Aguilera
- Madrid Anti-Doping Laboratory; AEPSAD c/ El Greco, s/n Madrid 28040 Spain
| | - David A. Cowan
- Drug Control Centre; King's College London; Franklin-Wilkins Building London SE1 9NH United Kingdom
| | - Magnus Ericsson
- Doping Control Laboratory; Karolinska University Hospital; C2-66 Stockholm S-141 86 Sweden
| | | | - Dorota Kwiatkowska
- Department of Anti-Doping Research; Institute of Sport; Trylogii 2/16 Warsaw 01-982 Poland
| | | | - Adeline Molina
- Agence Française de Lutte contre le Dopage (AFLD); Département des Analyses; 143 avenue Roger Salengro Châtenay-Malabry 92290 France
| | - João Ruivo
- Laboratório de Análises de Dopagem (LAD); Autoridade Antidopagem de Portugal (ADoP); Av. Professor Egas Moniz Lisboa 1600-190 Portugal
| | - Jordi Segura
- Fundació Institut Mar D'Investigacions Mèdiques (IMIM); c/ Doctor Aiguader, 88 Barcelona 08003 Spain
| | - Peter Van Eenoo
- Doping Control Laboratory; Ghent University (UGent); Technologiepark 30 9052 Zwijnaarde Belgium
| | - Nicolas Jan
- Swiss Laboratory for Doping Analyses; University Center of Legal Medicine, Geneva and Lausanne; Chemin des Croisettes 22 1066 Epalinges Switzerland
| | - Neil Robinson
- Swiss Laboratory for Doping Analyses; University Center of Legal Medicine, Geneva and Lausanne; Chemin des Croisettes 22 1066 Epalinges Switzerland
| | - Martial Saugy
- Swiss Laboratory for Doping Analyses; University Center of Legal Medicine, Geneva and Lausanne; Chemin des Croisettes 22 1066 Epalinges Switzerland
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Cawley AT, Blakey K, Waller CC, McLeod MD, Boyd S, Heather A, McGrath KC, Handelsman DJ, Willis AC. Detection and metabolic investigations of a novel designer steroid: 3-chloro-17α-methyl-5α-androstan-17β-ol. Drug Test Anal 2015; 8:621-32. [DOI: 10.1002/dta.1832] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 05/11/2015] [Accepted: 05/28/2015] [Indexed: 01/30/2023]
Affiliation(s)
- Adam T. Cawley
- Australian Racing Forensic Laboratory; Racing NSW; Randwick NSW Australia
| | - Karen Blakey
- Forensic and Scientific Services, Health Support Queensland; Department of Health, Queensland Government; Archerfield QLD Australia
| | - Christopher C. Waller
- Research School of Chemistry; Australian National University; Canberra ACT Australia
| | - Malcolm D. McLeod
- Research School of Chemistry; Australian National University; Canberra ACT Australia
| | - Sue Boyd
- Magnetic Resonance Facility, School of Natural Sciences; Griffith University; Nathan QLD Australia
| | - Alison Heather
- Faculty of Science; University of Technology; Sydney NSW Australia
- Currently with the Department of Physiology; University of Otago; Dunedin New Zealand
| | | | | | - Anthony C. Willis
- Research School of Chemistry; Australian National University; Canberra ACT Australia
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Domínguez-Romero JC, García-Reyes JF, Lara-Ortega FJ, Molina-Díaz A. Screening and confirmation capabilities of liquid chromatography-time-of-flight mass spectrometry for the determination of 200 multiclass sport drugs in urine. Talanta 2015; 134:74-88. [DOI: 10.1016/j.talanta.2014.10.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 10/15/2014] [Accepted: 10/24/2014] [Indexed: 12/25/2022]
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Lu J, Fernández-Álvarez M, Yang S, He G, Xu Y, Aguilera R. New potential biomarkers for mesterolone misuse in human urine by liquid chromatography quadrupole time-of-flight mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:153-159. [PMID: 25601687 DOI: 10.1002/jms.3508] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 09/12/2014] [Accepted: 09/14/2014] [Indexed: 06/04/2023]
Abstract
In this paper, mesterolone metabolic profiles were investigated carefully. Mesterolone was administered to one healthy male volunteer. Urinary extracts were analyzed by liquid chromatography quadruple time-of-flight mass spectrometry (LC-QTOFMS) for the first time. Liquid-liquid extraction was applied to processing urine samples, and dilute-shoot analyses of intact metabolites were also presented. In LC-QTOFMS analysis, chromatographic peaks for potential metabolites were hunt down by using the theoretical [M-H](-) as target ions in full scan experiment, and their actual deprotonated ions were analyzed in targeted MS/MS mode. Ten metabolites including seven new sulfate and three glucuronide conjugates were found for mesterolone. Because of no useful fragment ion for structural elucidation, gas chromatography-mass spectrometry instrumentation was employed to obtain structural details of the trimethylsilylated phase I metabolite released after solvolysis. Thus, their potential structures were proposed particularly by a combined MS approach. All the metabolites were also evaluated in terms of how long they could be detected, and S1 (1α-methyl-5α-androst-3-one-17β-sulfate) together with S2 (1α-methyl-5α-androst-17-one-3β-sulfate) was detected up to 9 days after oral administration, which could be the new potential biomarkers for mesterolone misuse.
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Affiliation(s)
- Jianghai Lu
- National Anti-doping Laboratory, China Anti-doping Agency, 1st Anding Road, ChaoYang District, Beijing, 100029, China
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Abstract
The abuse of unknown designer androgenic anabolic steroids (AAS) is considered to be an issue of significant importance, as AAS are the choice of doping preference according to World Anti-doping Agency statistics. In addition, unknown designer AAS are preferred since the World Anti-doping Agency mass spectrometric identification criteria cannot be applied to unknown molecules. Consequently, cheating athletes have a strong motive to use designer AAS in order to both achieve performance enhancement and to escape from testing positive in anti-doping tests. To face the problem, a synergy is required between the anti-doping analytical science and sports anti-doping regulations. This Review examines various aspects of the designer AAS. First, the structural modifications of the already known AAS to create new designer molecules are explained. A list of the designer synthetic and endogenous AAS is then presented. Second, we discuss progress in the detection of designer AAS using: mass spectrometry and bioassays; analytical data processing of the unknown designer AAS; metabolite synthesis; and, long-term storage of urine and blood samples. Finally, the introduction of regulations from sports authorities as preventive measures for long-term storage and reprocessing of samples, initially reported as negatives, is discussed.
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Kim SH, Cha EJ, Lee KM, Kim HJ, Kwon OS, Lee J. Simultaneous ionization and analysis of 84 anabolic androgenic steroids in human urine using liquid chromatography-silver ion coordination ionspray/triple-quadrupole mass spectrometry. Drug Test Anal 2014; 6:1174-85. [DOI: 10.1002/dta.1747] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/12/2014] [Accepted: 10/13/2014] [Indexed: 11/06/2022]
Affiliation(s)
- So-Hee Kim
- Doping Control Center; Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
- Department of Chemistry, Research Institute for Natural Sciences; Korea University; 145, Anam-ro, Seongbuk-gu Seoul 136-701 Korea
| | - Eun-Ju Cha
- Doping Control Center; Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
- Department of Chemistry, Research Institute for Natural Sciences; Korea University; 145, Anam-ro, Seongbuk-gu Seoul 136-701 Korea
| | - Kang Mi Lee
- Doping Control Center; Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Ho Jun Kim
- Doping Control Center; Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Oh-Seung Kwon
- Doping Control Center; Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
| | - Jaeick Lee
- Doping Control Center; Korea Institute of Science and Technology; Hwarang-ro 14-gil 5, Seongbuk-gu Seoul 136-791 Korea
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Recent developments in urinalysis of metabolites of new psychoactive substances using LC–MS. Bioanalysis 2014; 6:2083-107. [DOI: 10.4155/bio.14.168] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
In the last decade, an ever-increasing number of new psychoactive substances (NPSs) have appeared on the recreational drug market. To account for this development, analytical toxicologists have to continuously adapt their methods to encompass the latest NPSs. Urine is the preferred biological matrix for screening analysis in different areas of analytical toxicology. However, the development of urinalysis procedures for NPSs is complicated by the fact that generally little or no information on urinary excretion patterns of such drugs exists when they first appear on the market. Metabolism studies are therefore a prerequisite in the development of urinalysis methods for NPSs. In this article, the literature on the urinalysis of NPS metabolites will be reviewed, focusing on articles published after 2008.
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Esposito S, Deventer K, Giron AJ, Roels K, Herregods L, Verstraete A, Van Eenoo P. Investigation of urinary excretion of hydroxyethyl starch and dextran by uhplc-hrms in different acquisition modes. Biol Sport 2014; 31:95-104. [PMID: 24899772 PMCID: PMC4042655 DOI: 10.5604/20831862.1096045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2014] [Indexed: 11/13/2022] Open
Abstract
Plasma volume expanders (PVEs) such as hydroxyethyl starch (HES) and dextran are misused in sports because they can prevent dehydration and reduce haematocrit values to mask erythropoietin abuse. Endogenous hydrolysis generates multiple HES and dextran oligosaccharides which are excreted in urine. Composition of the urinary metabolic profiles of PVEs varies depending on post-administration time and can have an impact on their detectability. In this work, different mass spectrometry data acquisition modes (full scan with and without in-source collision-induced dissociation) were used to study urinary excretion profiles of HES and dextran, particularly by investigating time-dependent detectability of HES and dextran urinary oligosaccharide metabolites in post-administration samples. In-source fragmentation yielded the best results in terms of limit of detection (LOD) and detection times, whereas detection of HES and dextran metabolites in full scan mode with no in-source fragmentation is related to recent administration (< 24 hours). Urinary excretion studies showed detection windows for HES and dextran respectively of 72 and 48 hours after administration. Dextran concentrations were above the previously proposed threshold of 500 µg · mL(-1) for 12 hours. A "dilute-and-shoot" method for the detection of HES and dextran in human urine by ultra-high-pressure liquid chromatography-electrospray ionization-high resolution Orbitrap™ mass spectrometry was developed for this study. Validation of the method showed an LOD in the range of 10-500 µg · mL(-1) for the most significant HES and dextran metabolites in the different modes. The method allows retrospective data analysis and can be implemented in existing high-resolution mass spectrometry-based doping control screening analysis.
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Affiliation(s)
- S Esposito
- Doping Control Laboratory, Ghent University (UGent), Technologiepark 30, 9052 Zwijnaarde, Belgium
| | - K Deventer
- Doping Control Laboratory, Ghent University (UGent), Technologiepark 30, 9052 Zwijnaarde, Belgium
| | - A J Giron
- Department of Analytical Chemistry, University of Extremadura, Avda.deElvas s/n, 06006 Badajoz, Spain
| | - K Roels
- Doping Control Laboratory, Ghent University (UGent), Technologiepark 30, 9052 Zwijnaarde, Belgium
| | - L Herregods
- Department of Anesthesia, Ghent University Hospital, De Pintelaan 185, 9000 Gent Belgium
| | - A Verstraete
- Department of Clinical Biology, microbiology and immunology, Ghent University Hospital, De Pintelaan 185, 9000 Gent Belgium
| | - P Van Eenoo
- Doping Control Laboratory, Ghent University (UGent), Technologiepark 30, 9052 Zwijnaarde, Belgium
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