1
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Cawley A, Keen B, Tou K, Elbourne M, Keledjian J. Biomarker ratios. Drug Test Anal 2022; 14:983-990. [PMID: 35293161 DOI: 10.1002/dta.3250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/06/2022] [Accepted: 03/06/2022] [Indexed: 12/21/2022]
Affiliation(s)
- Adam Cawley
- Australian Racing Forensic Laboratory, Racing NSW, Sydney, NSW, Australia
| | - Bethany Keen
- Centre for Forensic Science, University of Technology Sydney, Broadway, NSW, Australia
| | - Kathy Tou
- Centre for Forensic Science, University of Technology Sydney, Broadway, NSW, Australia
| | - Madysen Elbourne
- Centre for Forensic Science, University of Technology Sydney, Broadway, NSW, Australia
| | - John Keledjian
- Australian Racing Forensic Laboratory, Racing NSW, Sydney, NSW, Australia
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2
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Iannone M, Alberti F, Braganò MC, de la Torre X, Molaioni F, Botrè F. Influence of synthetic isoflavones on selected urinary steroid biomarkers: Relevance to doping control. Steroids 2021; 174:108900. [PMID: 34391799 DOI: 10.1016/j.steroids.2021.108900] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/25/2021] [Accepted: 08/01/2021] [Indexed: 11/27/2022]
Abstract
In this work we have investigated the influence of the intake of two synthetic isoflavones, methoxyisoflavone and ipriflavone, on the urinary concentration of endogenous steroids, and on their relative ratios, of doping relevance. Specifically, the concentrations of testosterone (T), epitestosterone (E), androsterone (A), etiocholanolone (Etio), 5α-androstan-3α,17α-diol (5αAdiol), 5β-androstan-3α,17α-diol (5βAdiol), and the ratios T/E, A/T, A/Etio, 5αAdiol/5βAdiol, 5αAdiol/E, were considered, in the framework of the Steroidal Module of the Athlete Biological Passport (ABP). The above set of parameters were complemented by the urinary levels of luteinizing hormone (total LH) and the ratio between T and LH (T/total LH), to assess the possible effects on the biosynthesis of the mentioned steroids. Five healthy Caucasian male volunteers were selected for the study. Urine samples were collected before and during the administration of (i) methoxyisoflavone (Methoxyisoflavone, MyProtein) and (ii) ipriflavone (Osteofix ®, Chiesi Farmaceutici). For the analysis of the urinary steroid profile, after enzymatic hydrolysis with β-glucuronidase from Escherichia Coli (E. Coli) and liquid-liquid extraction with tert-buthylmethyl ether, all samples were analyzed by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS), while for the determination of total LH all urine samples were directly analyzed by a chemiluminescent immunometric assay technique (Siemens Immulite 2000 LH). Our results show that the administration of either methoxyisoflavone or ipriflavone causes an alteration of the urinary concentrations and concentration ratios of the investigated steroids, in the range 55-80% from the baseline values. Furthermore, an oversecretion of LH after the daily intake of methoxyisoflavone or ipriflavone was also recorded in all volunteers, corresponding to an increase in the biosynthesis and excretion of T and some of its metabolites. These changes trigger a disregulation in the pattern of urinary excretion of the steroids included in the Steroidal Module of the ABP, which makes more difficult the interpretation of the longitudinal steroid profile based on the definition of individual normality ranges for each athlete. Our data are also consistent with previous evidence regarding the in vitro effects of natural and synthetic isoflavones, suggesting that their monitoring in doping control routine analysis would be very beneficial for the result management activities.
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Affiliation(s)
- Michele Iannone
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Francesca Alberti
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Maria Cristina Braganò
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Xavier de la Torre
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Francesco Molaioni
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Francesco Botrè
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy; REDs - Research and Expertise in antiDoping Sciences, ISSUL - Institute of Sport Sciences, University of Lausanne, Synathlon, Quartier Centre, 1015 Lausanne, Switzerland.
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3
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Paris A, Labrador B, Lejeune FX, Canlet C, Molina J, Guinot M, Mégret A, Rieu M, Thalabard JC, Le Bouc Y. Metabolomic signatures in elite cyclists: differential characterization of a seeming normal endocrine status regarding three serum hormones. Metabolomics 2021; 17:67. [PMID: 34228178 DOI: 10.1007/s11306-021-01812-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 06/10/2021] [Indexed: 01/04/2023]
Abstract
INTRODUCTION Serum phenotyping of elite cyclists regarding cortisol, IGF1 and testosterone is a way to detect endocrine disruptions possibly explained by exercise overload, non-balanced diet or by doping. This latter disruption-driven approach is supported by fundamental physiology although without any evidence of any metabolic markers. OBJECTIVES Serum samples were distributed through Low, High or Normal endocrine classes according to hormone concentration. A 1H NMR metabolomic study of 655 serum obtained in the context of the longitudinal medical follow-up of 253 subjects was performed to discriminate the three classes for every endocrine phenotype. METHODS An original processing algorithm was built which combined a partial-least squares-based orthogonal correction of metabolomic signals and a shrinkage discriminant analysis (SDA) to get satisfying classifications. An extended validation procedure was used to plan in larger size cohorts a minimal size to get a global prediction rate (GPR), i.e. the product of the three class prediction rates, higher than 99.9%. RESULTS Considering the 200 most SDA-informative variables, a sigmoidal fitting of the GPR gave estimates of a minimal sample size to 929, 2346 and 1408 for cortisol, IGF1 and testosterone, respectively. Analysis of outliers from cortisol and testosterone Normal classes outside the 97.5%-confidence limit of score prediction revealed possibly (i) an inadequate protein intake for outliers or (ii) an intake of dietary ergogenics, glycine or glutamine, which might explain the significant presence of heterogeneous metabolic profiles in a supposedly normal cyclists subgroup. CONCLUSION In a next validation metabolomics study of a so-sized cohort, anthropological, clinical and dietary metadata should be recorded in priority at the blood collection time to confirm these functional hypotheses.
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Affiliation(s)
- Alain Paris
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum national d'Histoire naturelle, CNRS, Paris, France.
| | - Boris Labrador
- Institut du Cerveau et de la Moelle épiniere (ICM), Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Hôpital Pitié Salpêtrière, Paris, France
| | - François-Xavier Lejeune
- Institut du Cerveau et de la Moelle épiniere (ICM), Sorbonne Université, Inserm U 1127, CNRS UMR 7225, Hôpital Pitié Salpêtrière, Paris, France
| | - Cécile Canlet
- Axiom, Toxalim, INRAE, ENVT, INPT-EI Purpan, Université Paul Sabatier, Toulouse, France
| | - Jérôme Molina
- Axiom, Toxalim, INRAE, ENVT, INPT-EI Purpan, Université Paul Sabatier, Toulouse, France
- Dynamiques et écologie des paysages agriforestiers (DYNAFOR), INRAE, INPT-ENSAT, INPT-EI Purpan, Auzeville, Castanet-Tolosan Cedex, France
| | - Michel Guinot
- CHU Grenoble-Alpes, UM Sports et Pathologies, Grenoble, France
- Hypoxia and Pathophysiology Unit, INSERM U 1042, Université Grenoble-Alpes, Grenoble, France
- UM Sports et Pathologies, CHU Sud, Echirolles, France
| | - Armand Mégret
- Fédération française de Cyclisme, 1 rue Laurent Fignon, Montigny le Bretonneux, France
| | - Michel Rieu
- Agence Française de Lutte contre le Dopage (AFLD), Paris, France
| | | | - Yves Le Bouc
- Sorbonne Université, INSERM, UMR S 938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
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4
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De Bruyne S, Speeckaert MM, Van Biesen W, Delanghe JR. Recent evolutions of machine learning applications in clinical laboratory medicine. Crit Rev Clin Lab Sci 2020; 58:131-152. [PMID: 33045173 DOI: 10.1080/10408363.2020.1828811] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Machine learning (ML) is gaining increased interest in clinical laboratory medicine, mainly triggered by the decreased cost of generating and storing data using laboratory automation and computational power, and the widespread accessibility of open source tools. Nevertheless, only a handful of ML-based products are currently commercially available for routine clinical laboratory practice. In this review, we start with an introduction to ML by providing an overview of the ML landscape, its general workflow, and the most commonly used algorithms for clinical laboratory applications. Furthermore, we aim to illustrate recent evolutions (2018 to mid-2020) of the techniques used in the clinical laboratory setting and discuss the associated challenges and opportunities. In the field of clinical chemistry, the reviewed applications of ML algorithms include quality review of lab results, automated urine sediment analysis, disease or outcome prediction from routine laboratory parameters, and interpretation of complex biochemical data. In the hematology subdiscipline, we discuss the concepts of automated blood film reporting and malaria diagnosis. At last, we handle a broad range of clinical microbiology applications, such as the reduction of diagnostic workload by laboratory automation, the detection and identification of clinically relevant microorganisms, and the detection of antimicrobial resistance.
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Affiliation(s)
- Sander De Bruyne
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | | | - Wim Van Biesen
- Department of Nephrology, Ghent University Hospital, Ghent, Belgium
| | - Joris R Delanghe
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
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5
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Development and validation of an UHPLC–MS/MS method for extended serum steroid profiling in female populations. Bioanalysis 2020; 12:753-768. [DOI: 10.4155/bio-2020-0046] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aim: Quantitative endogenous steroid profiling in blood appears as a complementary approach to the urinary module of the World Anti-Doping Agency's Athlete Biological Passport Steroidal Module for the detection of testosterone doping. To refine this approach further, a UHPLC–MS/MS method was developed for the simultaneous determination of 14 free and 14 conjugated steroids in serum. Results: The method was validated for quantitative purposes with satisfactory results in terms of selectivity, linearity range, trueness, precision and combined uncertainty (<20%). The validated method was then applied to serum samples from both healthy women and women diagnosed with mild hyperandrogenism. Conclusion: The UHPLC–MS/MS method showed promising capability in quantifying free and conjugated steroids in serum and determining variations of their concentration/distribution within serum samples from different populations.
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6
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Iannone M, Palermo A, de la Torre X, Romanelli F, Sansone A, Sansone M, Lenzi A, Botrè F. Effects of transdermal administration of testosterone gel on the urinary steroid profile in hypogonadal men: Implications in antidoping analysis. Steroids 2019; 152:108491. [PMID: 31499075 DOI: 10.1016/j.steroids.2019.108491] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 08/20/2019] [Accepted: 09/01/2019] [Indexed: 12/11/2022]
Abstract
Testosterone is one of the most abused pseudo-endogenous anabolic steroids in sport doping. The current method adopted to detect the abuse of testosterone and other pseudo-endogenous steroids (endogenous steroids when administered exogenously) is first based on the longitudinal monitoring of several urinary biomarkers, which constitute the so called "steroidal module" of the Athlete Biological Passport (ABP): atypical samples undergo a confirmation analysis based on the measurement of the 13C/12C isotopic ratio of selected target compounds, to distinguish their endogenous or exogenous origin. At the same time, testosterone administration can be allowed in athletes diagnosed with hypogonadism, provided they are granted a therapeutic use exemption by the relevant medical authority. In this pilot study we have investigated whether the approach based on the preliminary determination of the urinary steroid profile, in the format considered in the steroidal module of the ABP, also integrated with the inclusion of the sulfo-conjugates and of additional target steroids, can retain its validity also in the case of hypogonadal athletes. We have studied the effects of a single low dose (40 mg) of testosterone gel (T-gel) on the urinary concentration of the markers of steroidal module of the ABP, as well as on some additional steroid markers. The study was based on the analysis of urinary samples from 19 non-hospitalized hypogonadal men, 10 of them with late-onset hypogonadism (LOH), collected before, after 4 h and after 24 h the transdermal self-administration of 40 mg of T-gel. None of the patient had any co-morbidities possibly affecting the urinary excretion of the steroidal markers. The steroidal markers were quantified by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) after the enzymatic hydrolysis of the respective glucuro-conjugates and the chemical hydrolysis of the respective sulfo-conjugates. Targeted GC-MS/MS analysis was carried out operating in electron impact (EI) ionization mode, with acquisition in multiple reaction monitoring (MRM) mode. Our preliminary results show that, as expected, the treatment with T-gel leads, in all hypogonadal men, to an increase of the urinary concentration of the glucuro-conjugate metabolites of testosterone and its main metabolites, with special relevance to those with 5α-reduction. Furthermore, samples collected from non-LOH hypogonadal men showed an increase also in the levels of epitestosterone glucuronide, testosterone sulfate and epitestosterone sulfate. Apart from their biochemical and pharmacological relevance, these outcomes could be leveraged to refine the analytical strategy currently followed in the antidoping field for the analysis of the urinary steroidal markers, with potential implications also in other forensic and/or clinical investigations.
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Affiliation(s)
- Michele Iannone
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Amelia Palermo
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Xavier de la Torre
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy
| | - Francesco Romanelli
- Department of Experimental Medicine, "Sapienza" University of Rome, Viale Regina Elena, 324, 00161 Roma, Italy
| | - Andrea Sansone
- Department of Experimental Medicine, "Sapienza" University of Rome, Viale Regina Elena, 324, 00161 Roma, Italy
| | - Massimiliano Sansone
- Department of Experimental Medicine, "Sapienza" University of Rome, Viale Regina Elena, 324, 00161 Roma, Italy
| | - Andrea Lenzi
- Department of Experimental Medicine, "Sapienza" University of Rome, Viale Regina Elena, 324, 00161 Roma, Italy
| | - Francesco Botrè
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Onesti 1, 00197 Rome, Italy; Department of Experimental Medicine, "Sapienza" University of Rome, Viale Regina Elena, 324, 00161 Roma, Italy.
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7
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Handelsman DJ, Bermon S. Detection of testosterone doping in female athletes. Drug Test Anal 2019; 11:1566-1571. [DOI: 10.1002/dta.2689] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 08/21/2019] [Accepted: 08/21/2019] [Indexed: 11/06/2022]
Affiliation(s)
| | - Stéphane Bermon
- International Association of Athletics Federations Monaco and Université Côte d'Azur, LAMHESS Nice France
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8
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Amante E, Pruner S, Alladio E, Salomone A, Vincenti M, Bro R. Multivariate interpretation of the urinary steroid profile and training-induced modifications. The case study of a Marathon runner. Drug Test Anal 2019; 11:1556-1565. [PMID: 31307117 DOI: 10.1002/dta.2676] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/04/2019] [Accepted: 07/07/2019] [Indexed: 12/11/2022]
Abstract
The steroidal module of the athlete biological passport (ABP) introduced by the World Anti-Doping Agency (WADA) in 2014 includes six endogenous androgenic steroids and five of their concentration ratios, monitored in urine samples collected repeatedly from the same athlete, whose values are interpreted by a Bayesian model on the basis of intra-individual variability. The same steroid profile, plus dihydrotestosterone (DHT) and DHEA, was determined in 198 urine samples collected from an amateur marathon runner monitored over three months preceding an international competition. Two to three samples were collected each day and subsequently analyzed by a fully validated gas chromatography-mass spectrometry protocol. The objective of the study was to identify the potential effects of physical activity at different intensity levels on the physiological steroid profile of the athlete. The results were interpreted using principal component analysis and Hotelling's T2 vs Q residuals plots, and were compared with a profile model based on the samples collected after rest. The urine samples collected after activity of moderate or high intensity, in terms of cardiac frequency and/or distance run, proved to modify the basal steroid profile, with particular enhancement of testosterone, epitestosterone, and 5α-androstane-3α,17β-diol. In contrast, all steroid concentration ratios were apparently not modified by intense exercise. The alteration of steroid profiles seemingly lasted for few hours, as most of the samples collected 6 or more hours after training showed profiles compatible with the "after rest" model. These observations issue a warning about the ABP results obtained immediately post-competition.
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Affiliation(s)
- Eleonora Amante
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy.,Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043, Orbassano, Torino, Italy
| | - Serena Pruner
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy
| | - Eugenio Alladio
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy.,Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043, Orbassano, Torino, Italy
| | - Alberto Salomone
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy.,Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043, Orbassano, Torino, Italy
| | - Marco Vincenti
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy.,Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043, Orbassano, Torino, Italy
| | - Rasmus Bro
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30 - 1958, Frederiksberg, Denmark
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Amante E, Alladio E, Salomone A, Vincenti M, Marini F, Alleva G, De Luca S, Porpiglia F. Correlation between chronological and physiological age of males from their multivariate urinary endogenous steroid profile and prostatic carcinoma-induced deviation. Steroids 2018; 139:10-17. [PMID: 30232035 DOI: 10.1016/j.steroids.2018.09.007] [Citation(s) in RCA: 7] [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: 06/27/2018] [Revised: 09/05/2018] [Accepted: 09/10/2018] [Indexed: 11/21/2022]
Abstract
The biosynthesis of endogenous androgenic anabolic steroids (EAAS) in males varies with age. Knowledge of the general urinary EAAS profile's dependence from aging - not reported up to now - may represents a prerequisite for its exploitation in the screening and diagnostic support for several pathologies. Extended urinary EAAS profiles were obtained from healthy and pathological individuals, using a GC-MS method which was fully validated by a stepwise, analyst-independent scheme. Seventeen EAAS and five of their concentration ratios were determined and investigated using multivariate statistical methods. A regression model based on Kernel partial least squares algorithm was built to correlate the chronological age of healthy male individuals with their "physiological age" as determined from their urinary EAAS profile. Strong correlation (R2 = 0.75; slope = 0.747) and good prediction ability of the real chronological age was inferred from EAAS data. In contrast, patients with recent diagnosis (not pharmacologically treated) of prostatic carcinoma (PCa) exhibited a comprehensive EAAS profile with strong negative deviation from the model, corresponding a younger predicted age. This result is possibly related to the activation of anomalous steroid biosynthesis induced from PCa. Over a restricted 60-80 years-old population, PLS-discriminant analysis (DA) was used to distinguish healthy subjects from patients with untreated PCa. PLS-DA yielded excellent discrimination (sensitivity and specificity >90%) between healthy and pathological individuals. This proof-of-concept study provides a preliminary evaluation of multivariate DA on wide EAAS profiles as a screening method to distinguish PCa from non-pathological conditions, overcoming the potentially interfering effect of ageing.
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Affiliation(s)
- Eleonora Amante
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy; Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy
| | - Eugenio Alladio
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy; Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy
| | - Alberto Salomone
- Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy
| | - Marco Vincenti
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy; Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy.
| | - Federico Marini
- Dipartimento di Chimica - Sapienza, Università di Roma, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Giorgio Alleva
- Divisione di Urologia, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Ospedale San Luigi, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Stefano De Luca
- Divisione di Urologia, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Ospedale San Luigi, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
| | - Francesco Porpiglia
- Divisione di Urologia, Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Ospedale San Luigi, Regione Gonzole 10, 10043 Orbassano, Turin, Italy
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Wilkes EH, Rumsby G, Woodward GM. Using Machine Learning to Aid the Interpretation of Urine Steroid Profiles. Clin Chem 2018; 64:1586-1595. [DOI: 10.1373/clinchem.2018.292201] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/23/2018] [Indexed: 11/06/2022]
Abstract
Abstract
BACKGROUND
Urine steroid profiles are used in clinical practice for the diagnosis and monitoring of disorders of steroidogenesis and adrenal pathologies. Machine learning (ML) algorithms are powerful computational tools used extensively for the recognition of patterns in large data sets. Here, we investigated the utility of various ML algorithms for the automated biochemical interpretation of urine steroid profiles to support current clinical practices.
METHODS
Data from 4619 urine steroid profiles processed between June 2012 and October 2016 were retrospectively collected. Of these, 1314 profiles were used to train and test various ML classifiers' abilities to differentiate between “No significant abnormality” and “?Abnormal” profiles. Further classifiers were trained and tested for their ability to predict the specific biochemical interpretation of the profiles.
RESULTS
The best performing binary classifier could predict the interpretation of No significant abnormality and ?Abnormal profiles with a mean area under the ROC curve of 0.955 (95% CI, 0.949–0.961). In addition, the best performing multiclass classifier could predict the individual abnormal profile interpretation with a mean balanced accuracy of 0.873 (0.865–0.880).
CONCLUSIONS
Here we have described the application of ML algorithms to the automated interpretation of urine steroid profiles. This provides a proof-of-concept application of ML algorithms to complex clinical laboratory data that has the potential to improve laboratory efficiency in a setting of limited staff resources.
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Affiliation(s)
- Edmund H Wilkes
- Department of Clinical Biochemistry, University College London Hospitals, London, UK
| | - Gill Rumsby
- Department of Clinical Biochemistry, University College London Hospitals, London, UK
| | - Gary M Woodward
- Department of Clinical Biochemistry, University College London Hospitals, London, UK
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Bailly-Chouriberry L, Loup B, Popot MA, Dreau ML, Garcia P, Bruyas JF, Bonnaire Y. Two complementary methods to control gonadotropin-releasing hormone vaccination (Improvac®) misuse in horseracing: Enzyme-linked immunosorbent assay test in plasma and steroidomics in urine. Drug Test Anal 2017; 9:1432-1440. [DOI: 10.1002/dta.2187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 02/09/2017] [Accepted: 03/06/2017] [Indexed: 11/08/2022]
Affiliation(s)
| | - Benoit Loup
- Laboratoire des Courses Hippiques; 15 rue de Paradis 91370 Verrières-le-Buisson France
| | - Marie-Agnès Popot
- Laboratoire des Courses Hippiques; 15 rue de Paradis 91370 Verrières-le-Buisson France
| | - Marie-Laure Dreau
- Laboratoire de Sécurité Sanitaire des Biotechnologies de la Reproduction; École Nationale Vétérinaire de Nantes; ONIRIS BP 40706 44307 Nantes cedex 03 France
| | - Patrice Garcia
- Laboratoire des Courses Hippiques; 15 rue de Paradis 91370 Verrières-le-Buisson France
| | - Jean-François Bruyas
- Laboratoire de Sécurité Sanitaire des Biotechnologies de la Reproduction; École Nationale Vétérinaire de Nantes; ONIRIS BP 40706 44307 Nantes cedex 03 France
| | - Yves Bonnaire
- Laboratoire des Courses Hippiques; 15 rue de Paradis 91370 Verrières-le-Buisson France
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Robles J, Marcos J, Renau N, Garrostas L, Segura J, Ventura R, Barceló B, Barceló A, Pozo OJ. Quantifying endogenous androgens, estrogens, pregnenolone and progesterone metabolites in human urine by gas chromatography tandem mass spectrometry. Talanta 2017; 169:20-29. [PMID: 28411812 DOI: 10.1016/j.talanta.2017.03.032] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 03/09/2017] [Accepted: 03/10/2017] [Indexed: 10/20/2022]
Abstract
A method for the quantitation of 22 urinary steroids (androgens, estrogens and the main pregnenolone and progesterone metabolites) by means of gas chromatography tandem mass spectrometry using a triple quadrupole analyzer has been developed. Two different enzymatic hydrolysis protocols were investigated; one capable of releasing steroids present as both sulfates and glucuronides (total fraction), and another with β-glucuronidase activity only. After selecting adequate internal standards and choosing the optimal instrumental parameters, i.e. chromatographic separation and ion transition conditions, the method was fully validated using both hydrolysis protocols. The method was shown to be linear (r >0.99) in the range of endogenous concentrations for all studied steroids with extraction recoveries higher than 80%. The use of labeled internal standards allowed for both a correct quantification and the evaluation of the rate of deconjugation for sulfates and glucuronides in every sample. In general, the sensitivity of the method was suitable for the detection of the endogenous levels, with limits of quantification ranging from 0.1 to 20ng/mL. Accuracies ranging from 80% to 120%, and relative standard deviations below 25% in intra- and inter- assay experiments were found for most of the analytes. The applicability of the validated method was tested by quantifying twenty-two metabolites in 24-h urine samples collected from healthy individuals. The ranges for the excretion of steroids in the total and glucuronide fractions obtained with the new method were compared with those available in the literature. By comparing the figures in both fractions, an estimation of the percentage that the sulfation represents for each steroid was also calculated. The presence of side enzymatic activities and the utility of the method for clinical studies as well as for doping control analysis is discussed.
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Affiliation(s)
- Juan Robles
- Servei d'Anàlisis Cliniques Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - Josep Marcos
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Nuria Renau
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Lorena Garrostas
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Doping Control Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Jordi Segura
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain; Doping Control Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Rosa Ventura
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain; Doping Control Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Bernardí Barceló
- Servei d'Anàlisis Cliniques Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - Antonia Barceló
- Servei d'Anàlisis Cliniques Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - Oscar J Pozo
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Integrative Pharmacology and Systems Neuroscience Research Group, IMIM (Hospital del Mar Research Institute), Dr. Aiguader 88, 08003 Barcelona, Spain.
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13
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Kotronoulas A, Gomez-Gomez A, Segura J, Ventura R, Joglar J, Pozo OJ. Evaluation of two glucuronides resistant to enzymatic hydrolysis as markers of testosterone oral administration. J Steroid Biochem Mol Biol 2017; 165:212-218. [PMID: 27328448 DOI: 10.1016/j.jsbmb.2016.06.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 05/11/2016] [Accepted: 06/17/2016] [Indexed: 10/21/2022]
Abstract
Testosterone (T) has traditionally been the most commonly reported doping agent by doping control laboratories. The screening of T misuse is performed by the quantification of six endogenous androgenic steroids and the ratio T/E included in the Athlete Biological Passport (ABP). The inclusion of additional metabolites can improve the screening capabilities of ABP. In this study, the potential of 3α-glucuronide-6β-hydroxyandrosterone (6OH-Andros3G) and 3α-glucuronide-6β-hydroxyetiocholanolone (6OH-Etio3G) as markers of T oral administration was evaluated. These glucuronides have been shown to be resistant to enzymatic hydrolysis and their quantification by means of liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) was reported as the only way to obtain feasible results. Urine samples were collected from five volunteers before and after the oral administration of 40mg of T undecanoate and were analyzed by a LC-MS/MS method recently developed. Concentration of 6OH-Andros3G and 6OH-Etio3G compounds and those of the glucuronides of T (TG), epitestosterone (EG), androsterone and etiocholanolone were established and different concentration ratios were calculated. The detection windows (DWs) for the T administration obtained by each selected ratio were compared to the one of TG/EG. The results showed that four out of the nine tested markers presented DWs much larger for all volunteers than those obtained by the World Anti-Doping Agency established T/E marker or other alternative markers. The 6OH-Andros3G/EG, 6OH-Etio3G/EG, 6OH-Andros3G/TG and 6OH-Etio3G/TG markers were able to identify the T abuse up to 96h after the administration, extending our detection capability for the misuse up to 84h more than the classic marker. The importance of these markers was also highlighted by their prolonged capacity to detect the T misuse in the case of one volunteer whose TG/EG barely exceeded his individual threshold. As a consequence, the four markers presented in this study seem to have an exceptional potential as biomarkers of T oral administration.
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Affiliation(s)
- Aristotelis Kotronoulas
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Spanish Council for Scientific Research (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Alex Gomez-Gomez
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Jordi Segura
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Rosa Ventura
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain; Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Jesús Joglar
- Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Spanish Council for Scientific Research (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Oscar J Pozo
- Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain.
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14
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Jardines D, Botrè F, Colamonici C, Curcio D, Procida G, de la Torre X. Longitudinal evaluation of the isotope ratio mass spectrometric data: towards the ‘isotopic module’ of the athlete biological passport? Drug Test Anal 2016; 8:1212-1221. [DOI: 10.1002/dta.2118] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/07/2016] [Accepted: 10/11/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel Jardines
- Laboratorio Antidoping FMSI; Largo Onesti 1 00197 Rome Italy
| | - Francesco Botrè
- Laboratorio Antidoping FMSI; Largo Onesti 1 00197 Rome Italy
- Department of Experimental Medicine; “Sapienza” University of Rome; Viale Regina Elena, 291 00161 Roma Italy
| | | | - Davide Curcio
- Laboratorio Antidoping FMSI; Largo Onesti 1 00197 Rome Italy
| | - Gemma Procida
- Laboratorio Antidoping FMSI; Largo Onesti 1 00197 Rome Italy
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15
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Alladio E, Caruso R, Gerace E, Amante E, Salomone A, Vincenti M. Application of multivariate statistics to the Steroidal Module of the Athlete Biological Passport: A proof of concept study. Anal Chim Acta 2016; 922:19-29. [PMID: 27154828 DOI: 10.1016/j.aca.2016.03.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/24/2016] [Accepted: 03/29/2016] [Indexed: 11/27/2022]
Abstract
The Technical Document TD2014EAAS was drafted by the World Anti-Doping Agency (WADA) in order to fight the spread of endogenous anabolic androgenic steroids (EAAS) misuse in several sport disciplines. In particular, adoption of the so-called Athlete Biological Passport (ABP) - Steroidal Module allowed control laboratories to identify anomalous EAAS concentrations within the athletes' physiological urinary steroidal profile. Gas chromatography (GC) combined with mass spectrometry (MS), indicated by WADA as an appropriate technique to detect urinary EAAS, was utilized in the present study to develop and fully-validate an analytical method for the determination of all EAAS markers specified in TD2014EAAS, plus two further markers hypothetically useful to reveal microbial degradation of the sample. In particular, testosterone, epitestosterone, androsterone, etiocholanolone, 5α-androstane-3α,17β-diol, 5β-androstane-3α,17β-diol, dehydroepiandrosterone, 5α-dihydrotestosterone, were included in the analytical method. Afterwards, the multi-parametric feature of ABP profile was exploited to develop a robust approach for the detection of EAAS misuse, based on multivariate statistical analysis. In particular, Principal Component Analysis (PCA) was combined with Hotelling T(2) tests to explore the EAAS data obtained from 60 sequential urine samples collected from six volunteers, in comparison with a reference population of single urine samples collected from 96 volunteers. The new approach proved capable of identifying anomalous results, including (i) the recognition of samples extraneous to each of the individual urine series and (ii) the discrimination of the urine samples collected from individuals to whom "endogenous" steroids had been administrated with respect to the rest of the samples population. The proof-of-concept results presented in this study will need further extension and validation on a population of sport professionals.
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Affiliation(s)
- Eugenio Alladio
- Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy; Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy.
| | - Roberto Caruso
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy.
| | - Enrico Gerace
- Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy.
| | - Eleonora Amante
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy.
| | - Alberto Salomone
- Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy.
| | - Marco Vincenti
- Centro Regionale Antidoping e di Tossicologia "A. Bertinaria", Regione Gonzole 10/1, 10043 Orbassano, Torino, Italy; Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy.
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16
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Raro M, Ibáñez M, Gil R, Fabregat A, Tudela E, Deventer K, Ventura R, Segura J, Marcos J, Kotronoulas A, Joglar J, Farré M, Yang S, Xing Y, Van Eenoo P, Pitarch E, Hernández F, Sancho JV, Pozo ÓJ. Untargeted metabolomics in doping control: detection of new markers of testosterone misuse by ultrahigh performance liquid chromatography coupled to high-resolution mass spectrometry. Anal Chem 2015. [PMID: 26200763 DOI: 10.1021/acs.analchem.5b02254] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The use of untargeted metabolomics for the discovery of markers is a promising and virtually unexplored tool in the doping control field. Hybrid quadrupole time-of-flight (QTOF) and hybrid quadrupole Orbitrap (Q Exactive) mass spectrometers, coupled to ultrahigh pressure liquid chromatography, are excellent tools for this purpose. In the present work, QTOF and Q Exactive have been used to look for markers for testosterone cypionate misuse by means of untargeted metabolomics. Two different groups of urine samples were analyzed, collected before and after the intramuscular administration of testosterone cypionate. In order to avoid analyte losses in the sample treatment, samples were just 2-fold diluted with water and directly injected into the chromatographic system. Samples were analyzed in both positive and negative ionization modes. Data from both systems were treated under untargeted metabolomic strategies using XCMS application and multivariate analysis. Results from the two mass spectrometers differed in the number of detected features, but both led to the same potential marker for the particular testosterone ester misuse. The in-depth study of the MS and MS/MS behavior of this marker allowed for the establishment of 1-cyclopentenoylglycine as a feasible structure. The putative structure was confirmed by comparison with synthesized material. This potential marker seems to come from the metabolism of the cypionic acid release after hydrolysis of the administered ester. Its suitability for doping control has been evaluated.
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Affiliation(s)
- Montse Raro
- †Research Institute for Pesticides and Water, University Jaume I, Av. Sos Baynat S/N, 12071 Castellón, Spain
| | - María Ibáñez
- †Research Institute for Pesticides and Water, University Jaume I, Av. Sos Baynat S/N, 12071 Castellón, Spain
| | - Rubén Gil
- †Research Institute for Pesticides and Water, University Jaume I, Av. Sos Baynat S/N, 12071 Castellón, Spain
| | - Andreu Fabregat
- ‡Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Eva Tudela
- §DoCoLab, Ghent University, Technologiepark 30, 9052, Zwijnaarde, Belgium
| | - Koen Deventer
- §DoCoLab, Ghent University, Technologiepark 30, 9052, Zwijnaarde, Belgium
| | - Rosa Ventura
- ‡Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain.,∥Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Jordi Segura
- ‡Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain.,∥Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Josep Marcos
- ‡Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain.,∥Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Aristotelis Kotronoulas
- ‡Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain.,⊥Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Spanish Council for Scientific Research (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Jesús Joglar
- ⊥Department of Biological Chemistry and Molecular Modelling, Institute of Advanced Chemistry of Catalonia, Spanish Council for Scientific Research (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Magi Farré
- #Human Pharmacology and Neurosciences Research Group, IMIM, Clinical Pharmacology Unit, Hospital Universitari Germnans Trias I Pujol-IGTP and Universitat Autònoma de Barcelona, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Sheng Yang
- ○National Anti-Doping Laboratory, China Anti-Doping Agency, 1, An Ding Road, Beijing, 100029, China
| | - Yanyi Xing
- ○National Anti-Doping Laboratory, China Anti-Doping Agency, 1, An Ding Road, Beijing, 100029, China
| | - Peter Van Eenoo
- #Human Pharmacology and Neurosciences Research Group, IMIM, Clinical Pharmacology Unit, Hospital Universitari Germnans Trias I Pujol-IGTP and Universitat Autònoma de Barcelona, Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Elena Pitarch
- †Research Institute for Pesticides and Water, University Jaume I, Av. Sos Baynat S/N, 12071 Castellón, Spain
| | - Félix Hernández
- †Research Institute for Pesticides and Water, University Jaume I, Av. Sos Baynat S/N, 12071 Castellón, Spain
| | - Juan Vicente Sancho
- †Research Institute for Pesticides and Water, University Jaume I, Av. Sos Baynat S/N, 12071 Castellón, Spain
| | - Óscar J Pozo
- ‡Bioanalysis Research Group, IMIM, Hospital del Mar, Doctor Aiguader 88, 08003 Barcelona, Spain
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17
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Fabregat A, Marcos J, Segura J, Ventura R, Pozo OJ. Factors affecting urinary excretion of testosterone metabolites conjugated with cysteine. Drug Test Anal 2015; 8:110-9. [DOI: 10.1002/dta.1801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 03/09/2015] [Accepted: 03/11/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Andreu Fabregat
- Bioanalysis Research Group, IMIM; Hospital del Mar; Doctor Aiguader 88 08003 Barcelona Spain
| | - Josep Marcos
- Bioanalysis Research Group, IMIM; Hospital del Mar; Doctor Aiguader 88 08003 Barcelona Spain
- Department of Experimental and Health Sciencies; Universitat Pompeu Fabra; Doctor Aiguader 88 08003 Barcelona Spain
| | - Jordi Segura
- Bioanalysis Research Group, IMIM; Hospital del Mar; Doctor Aiguader 88 08003 Barcelona Spain
- Department of Experimental and Health Sciencies; Universitat Pompeu Fabra; Doctor Aiguader 88 08003 Barcelona Spain
| | - Rosa Ventura
- Bioanalysis Research Group, IMIM; Hospital del Mar; Doctor Aiguader 88 08003 Barcelona Spain
- Department of Experimental and Health Sciencies; Universitat Pompeu Fabra; Doctor Aiguader 88 08003 Barcelona Spain
| | - Oscar J. Pozo
- Bioanalysis Research Group, IMIM; Hospital del Mar; Doctor Aiguader 88 08003 Barcelona Spain
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18
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Kuuranne T, Saugy M, Baume N. Confounding factors and genetic polymorphism in the evaluation of individual steroid profiling. Br J Sports Med 2015; 48:848-55. [PMID: 24764553 PMCID: PMC4033181 DOI: 10.1136/bjsports-2014-093510] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In the fight against doping, steroid profiling is a powerful tool to detect drug misuse with endogenous anabolic androgenic steroids. To establish sensitive and reliable models, the factors influencing profiling should be recognised. We performed an extensive literature review of the multiple factors that could influence the quantitative levels and ratios of endogenous steroids in urine matrix. For a comprehensive and scientific evaluation of the urinary steroid profile, it is necessary to define the target analytes as well as testosterone metabolism. The two main confounding factors, that is, endogenous and exogenous factors, are detailed to show the complex process of quantifying the steroid profile within WADA-accredited laboratories. Technical aspects are also discussed as they could have a significant impact on the steroid profile, and thus the steroid module of the athlete biological passport (ABP). The different factors impacting the major components of the steroid profile must be understood to ensure scientifically sound interpretation through the Bayesian model of the ABP. Not only should the statistical data be considered but also the experts in the field must be consulted for successful implementation of the steroidal module.
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Affiliation(s)
- Tiia Kuuranne
- Doping Control Laboratory, United Medix Laboratories Ltd., , Helsinki, Finland
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19
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Untargeted profiling of urinary steroid metabolites after testosterone ingestion: opening new perspectives for antidoping testing. Bioanalysis 2014; 6:2523-36. [DOI: 10.4155/bio.14.200] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim: Antidoping procedures are expected to greatly benefit from untargeted metabolomic approaches through the discovery of new biomarkers of prohibited substances abuse. Results: Endogenous steroid metabolites were monitored in urine samples from a controlled elimination study of testosterone undecanoate after ingestion. A platform coupling ultra-high pressure LC with high-resolution quadrupole TOF MS was used and high between-subject metabolic variability was successfully handled using a multiblock data analysis strategy. Links between specific subsets of metabolites and influential genetic polymorphisms of the UGT2B17 enzyme were highlighted. Conclusion: This exploratory metabolomic strategy constitutes a first step toward a better understanding of the underlying patterns driving the high interindividual variability of steroid metabolism. Promising biomarkers were selected for further targeted study.
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20
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Thevis M, Kuuranne T, Geyer H, Schänzer W. Annual banned-substance review: analytical approaches in human sports drug testing. Drug Test Anal 2013; 6:164-84. [DOI: 10.1002/dta.1591] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 11/06/2013] [Indexed: 12/20/2022]
Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
- European Monitoring Center for Emerging Doping Agents; Cologne Germany
| | - Tiia Kuuranne
- Doping Control Laboratory; United Medix Laboratories; Höyläämötie 14 00380 Helsinki Finland
| | - Hans Geyer
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Wilhelm Schänzer
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
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21
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Kaabia Z, Dervilly-Pinel G, Popot MA, Bailly-Chouriberry L, Plou P, Bonnaire Y, Le Bizec B. Monitoring the endogenous steroid profile disruption in urine and blood upon nandrolone administration: An efficient and innovative strategy to screen for nandrolone abuse in entire male horses. Drug Test Anal 2013; 6:376-88. [PMID: 23949888 DOI: 10.1002/dta.1520] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 07/03/2013] [Accepted: 07/07/2013] [Indexed: 11/07/2022]
Abstract
Nandrolone (17β-hydroxy-4-estren-3-one) is amongst the most misused endogenous steroid hormones in entire male horses. The detection of such a substance is challenging with regard to its endogenous presence. The current international threshold level for nandrolone misuse is based on the urinary concentration ratio of 5α-estrane-3β,17α-diol (EAD) to 5(10)-estrene-3β,17α-diol (EED). This ratio, however, can be influenced by a number of factors due to existing intra- and inter-variability standing, respectively, for the variation occurring in endogenous steroids concentration levels in a single subject and the variation in those same concentration levels observed between different subjects. Targeting an efficient detection of nandrolone misuse in entire male horses, an analytical strategy was set up in order to profile a group of endogenous steroids in nandrolone-treated and non-treated equines. Experiment plasma and urine samples were steadily collected over more than three months from a stallion administered with nandrolone laurate (1 mg/kg). Control plasma and urine samples were collected monthly from seven non-treated stallions over a one-year period. A large panel of steroids of interest (n = 23) were extracted from equine urine and plasma samples using a C18 cartridge. Following a methanolysis step, liquid-liquid and solid-phase extractions purifications were performed before derivatization and analysis on gas chromatography-tandem mass spectrometry (GC-MS/MS) for quantification. Statistical processing of the collected data permitted to establish statistical models capable of discriminating control samples from those collected during the three months following administration. Furthermore, these statistical models succeeded in predicting the compliance status of additional samples collected from racing horses.
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Affiliation(s)
- Z Kaabia
- LUNAM Université, Oniris, Laboratoire d'Étude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, F-44307, France; Laboratoire des Courses Hippiques (LCH), Verrières le Buisson, F-91370, France
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22
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Marclay F, Mangin P, Margot P, Saugy M. Perspectives for Forensic Intelligence in anti-doping: Thinking outside of the box. Forensic Sci Int 2013; 229:133-44. [DOI: 10.1016/j.forsciint.2013.04.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/28/2013] [Accepted: 04/09/2013] [Indexed: 11/15/2022]
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