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Fan J, Wang Y, Zhuo Y, Xu S, Zhou W, Liu B. Quantification of AICAR and study of metabolic markers after administration. RSC Adv 2024; 14:19001-19013. [PMID: 38873554 PMCID: PMC11170270 DOI: 10.1039/d4ra02878c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Accepted: 05/19/2024] [Indexed: 06/15/2024] Open
Abstract
Objectives: AICAR (5-amino-4-imidazolecarboxyamide ribonucleoside) was reported as the first pharmacological AMPK (adenosine 5'-monophosphate (AMP)-activated protein kinase) activator, and it has been confirmed to exhibit a significant endurance enhancement effect and prohibited for doping by the World Anti-Doping Agency. Due to the fact that the human body can produce such substances, in order to ensure fairness in sports competition, methods for rapid detection and multi-type identification of AICAR drugs taken orally should be established. Methods: to assess AICAR levels, a new rapid, sensitive, efficient, and selective method was reported for the quantitative detection of AICAR in urine using LC-MS/MS. The method was validated for quantitative purposes based on the elemental selectivity, intra- (1.0-15.6%) and inter-day precision (1.3-16.3%), accuracy (99.9-112.8%), matrix effects (88.9-103.6%), recovery (87.4-106.5%), and stability at four different concentrations. The calibration curve was linear over a wide concentration range of 10-10,000 ng mL-1 with a high coefficient of determination (R 2 > 0.998). The limit of detection (LOD) and limit of quantification (LOQ) for the experiment were determined to be 1 and 10 ng mL-1, respectively. Simultaneously, metabolomics analysis was used to obtain the metabolic fingerprint of different populations and biomarkers to distinguish administration cases through partial least squares discriminant analysis (PLS-DA) and a receiver operating characteristic (ROC) curve. Results: the method enables easy quantitation for LC-MS/MS analysis with the best recovery yield maintained, and the method was applied to 122 Asian biological samples with an average concentration of 1310.5 ± 1031.4 ng mL-1. Through drug metabolism research, 734 and 294 variables were extracted for data analysis respectively in the positive and negative ion modes, and more than 100 metabolites with significant up- and down-regulation were found after the test. Conclusions: this research developed a fast, precise, effective, and specific approach for the qualitative and quantitative identification of AICAR in urine. Meanwhile, administration metabolism studies found that there were significant changes in AICAR levels and other compounds, such as PC types PC(18:1/16:0), PC(16:0/18:0), and PC(16:0/16:0), PE types PE(18:0/20:4), and LPE-type 18:1, which could better distinguish samples before and after AICAR administration. The analysis provides a multi-perspective reference for WADA to determine a positive criterion.
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Affiliation(s)
- Jingyi Fan
- Shanghai University of Sport Changhai Road 399 Shanghai 200438 P. R. China
| | - Yirang Wang
- Shanghai University of Sport Changhai Road 399 Shanghai 200438 P. R. China
| | - Yue Zhuo
- Shanghai University of Sport Changhai Road 399 Shanghai 200438 P. R. China
| | - Siyan Xu
- Shanghai University of Sport Changhai Road 399 Shanghai 200438 P. R. China
| | - Wanggeng Zhou
- Xiamen Medical College 1999 Guankou Road, Jimei District Xiamen Fujian 361023 P. R. China
| | - Bing Liu
- Shanghai University of Sport Changhai Road 399 Shanghai 200438 P. R. China
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2
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Kang I, Seo Y, Lee K, Lee HJ, Son J, Lee HJ, Oh MK, Min H. Development of an Ephedrine In-House Matrix Reference Material and Its Application to Doping Analysis. ACS OMEGA 2024; 9:12689-12697. [PMID: 38524422 PMCID: PMC10955597 DOI: 10.1021/acsomega.3c08316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/04/2024] [Accepted: 02/27/2024] [Indexed: 03/26/2024]
Abstract
Biomatrix-based reference materials (RMs) improve the quality of laboratory test results by better representing actual samples. However, a matrix RM of ephedrine (EP) for threshold substances that require accurate analysis results has not yet been developed. Therefore, this study aimed to develop an in-house matrix RM for EP and subsequently apply it to analytical procedures. During the development of the in-house matrix EP RM, the system underwent homogeneity and stability studies. Additionally, it was subjected to interlaboratory comparison study in 11 laboratories, including 10 World Anti-Doping Agency (WADA)-accredited laboratories and our laboratory. Stability testing revealed no significant changes in the RM characteristics. For homogeneity, 10 random batches out of 200 were analyzed to confirm the uniformity within and between bottles. These results, combined with data from 11 laboratories, ensured retroactive validation. The traceability value of the in-house matrix EP RM was assigned as 9.83 ± 0.57 μg/mL (k = 2) by interlaboratory comparison studies and traceable uncertain evaluation. The feasibility of this method as a single calibration standard was confirmed in two laboratories. This substance is reliable and consistent for quality control during EP quantification, ensuring accurate and trustworthy outcomes. Consequently, this study establishes a framework and guidelines for producing in-house matrix RMs and serves as a reference for generating similar matrix RMs in other contexts.
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Affiliation(s)
- Inseon Kang
- Doping
Control Center, Korea Institute of Science
and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic
of Korea
- Graduate
School of Pharmaceutical Sciences, Ewha
Womans University, 52 Ewhayeodae-Gil, Seodaemun-Gu, Seoul 03760, Republic
of Korea
| | - Yoondam Seo
- Doping
Control Center, Korea Institute of Science
and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic
of Korea
- Department
of Chemical and Biological Engineering, Korea University, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Kangmi Lee
- Doping
Control Center, Korea Institute of Science
and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic
of Korea
| | - Hyeon-Jeong Lee
- Doping
Control Center, Korea Institute of Science
and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic
of Korea
| | - Junghyun Son
- Doping
Control Center, Korea Institute of Science
and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic
of Korea
| | - Hwa Jeong Lee
- Graduate
School of Pharmaceutical Sciences, Ewha
Womans University, 52 Ewhayeodae-Gil, Seodaemun-Gu, Seoul 03760, Republic
of Korea
| | - Min-Kyu Oh
- Department
of Chemical and Biological Engineering, Korea University, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hophil Min
- Doping
Control Center, Korea Institute of Science
and Technology, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic
of Korea
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3
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Slíž K, Piešťanský J, Mikuš P. An Ultra-High-Performance Liquid Chromatography Coupled with Tandem Mass Spectrometry Method with Online Solid-Phase Extraction Sample Preparation for the High-Throughput and Sensitive Determination of Ostarine in Human Urine. Methods Protoc 2024; 7:10. [PMID: 38392684 PMCID: PMC10892632 DOI: 10.3390/mps7010010] [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: 12/27/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 02/24/2024] Open
Abstract
Ostarine is frequently misused as a selective androgen receptor modulator (SARM) in sports. Consequently, there is a pressing need for reliable and simple approaches to monitor its presence in biological systems. In this work, we developed a two-dimensional analytical method utilizing online solid-phase extraction (online-SPE) in conjunction with ultra-high-performance liquid chromatography and tandem mass spectrometry (triple quadrupole). This automated 2D separation approach is characterized by minimum manual steps in the sample preparation (only dilute-and-shoot), reflecting high sample throughput and the reliability of analytical data. It provides favorable performance parameters, including a limit of detection of 0.5 pg/mL, high accuracy (relative error = 1.6-7.5%), precision (relative standard deviation = 0.8-4.5%), and sensitivity. Additionally, it demonstrates excellent linearity (r2 = 0.9999) in the calibration range of 0.05 to 25 ng/mL and robustness, with no carryover effects observed. This comparative study revealed a two-decadic-order-lower LOD of the SPE-UHPLC-MS/MS method to the corresponding UHPLC-MS/MS method and the lowest one in the group of currently published LC-MS methods. The World Anti-Doping Agency screening and confirmation criteria were met through the analysis of spiked urine samples from ten healthy volunteers. Accordingly, the proposed method is suitable for routine use in antidoping laboratories.
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Affiliation(s)
- Kristián Slíž
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia;
- Toxicologic and Antidoping Centre, Faculty of Pharmacy, Comenius University Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia
| | - Juraj Piešťanský
- Department of Galenic Pharmacy, Faculty of Pharmacy, Comenius University Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia;
| | - Peter Mikuš
- Department of Pharmaceutical Analysis and Nuclear Pharmacy, Faculty of Pharmacy, Comenius University Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia;
- Toxicologic and Antidoping Centre, Faculty of Pharmacy, Comenius University Bratislava, Odbojárov 10, 832 32 Bratislava, Slovakia
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4
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Bressan C, Seró R, Alechaga É, Monfort N, Moyano E, Ventura R. Potential of desorption electrospray ionization and paper spray ionization with high-resolution mass spectrometry for the screening of sports doping agents in urine. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:462-471. [PMID: 36602104 DOI: 10.1039/d2ay01687g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In this work, desorption electrospray ionization and paper spray ionization both with high-resolution mass spectrometry (DESI-HRMS and PSI-HRMS) were explored for the fast and direct analysis of stimulants and diuretics in urine samples. The analysis was performed at a resolution of 70 000 FWHM (m/z 200) using a quadrupole-Orbitrap mass spectrometer in full scan acquisition mode, detecting stimulants and diuretics in positive and negative ion modes, respectively. The most critical parameters affecting the desorption and ionization efficiencies of compounds were optimized, paying particular attention to the optimization of the spray solvent for PSI-HRMS analysis and to the selection of the DESI sample substrate. For stimulants, the PSI-HRMS method performed better than DESI-HRMS, allowing the direct analysis of raw urine samples with better signal-to-noise ratios than DESI. However, results obtained for diuretics were not as satisfactory as we expected. The PSI-HRMS method was applied to the screening of 52 stimulants for doping control purposes, providing satisfactory detectability for most of them at the Minimum Reporting Level (MRL) in less than 2 minutes for each single analysis. Despite the advantages offered by the PSI-HRMS method, in this study is also included a discussion on the limitations observed because of the presence of interference for some compounds.
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Affiliation(s)
- Claudia Bressan
- Catalonian Antidoping Laboratory, Doping Control Research Group, IMIM (Hospital del Mar Medical Research Institute), Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Raquel Seró
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Av. Diagonal 645, 08028 Barcelona, Spain.
| | - Élida Alechaga
- Catalonian Antidoping Laboratory, Doping Control 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
| | - Nuria Monfort
- Catalonian Antidoping Laboratory, Doping Control Research Group, IMIM (Hospital del Mar Medical Research Institute), Doctor Aiguader 88, 08003 Barcelona, Spain
| | - Encarnación Moyano
- Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, Av. Diagonal 645, 08028 Barcelona, Spain.
| | - Rosa Ventura
- Catalonian Antidoping Laboratory, Doping Control Research Group, IMIM (Hospital del Mar Medical Research Institute), Doctor Aiguader 88, 08003 Barcelona, Spain
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5
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De Wilde L, Roels K, Van Eenoo P, Deventer K. Online Turbulent Flow Extraction and Column Switching for the Confirmatory Analysis of Stimulants in Urine by Liquid Chromatography-Mass Spectrometry. J Anal Toxicol 2021; 45:666-678. [PMID: 33025016 DOI: 10.1093/jat/bkaa136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/10/2020] [Accepted: 09/24/2020] [Indexed: 11/14/2022] Open
Abstract
Stimulants are often used to treat attention deficit disorders and nasal congestion. As they can be misused and overdosed, the detection of stimulants is relevant in the toxicological field as well as in the doping control field. The effects of stimulants can indeed be beneficial for athletes. Therefore, their in-competition use is prohibited by the World Anti-Doping Agency (WADA). As stimulants represent one of the most detected categories of prohibited substances, automation of methods to detect and confirm their presence is desirable. Previous work has shown the advantages of using turbulent flow online solid-phase extraction liquid chromatography-tandem mass spectrometry (online SPE LC-MS-MS) for the detection and confirmation of diuretics and masking agents. Hence, a turbulent flow online SPE LC-MS-MS method, compliant with the WADA's identification criteria, was developed and validated for the detection and confirmation of 80 stimulants or metabolites with limits of identification varying between 10 (or possibly lower) and 100 ng/mL. As several metabolites are common metabolites for multiple administered stimulants, this means that with this method, misuse of well over 100 compounds can be detected. As the developed method uses the same columns and mobile phases as our turbulent flow online SPE LC-MS-MS method for the confirmation of diuretics and masking agents, there is no need to change the configuration of the instrument when switching between the diuretics method and the developed stimulants method.
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Affiliation(s)
- Laurie De Wilde
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
| | - Kris Roels
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
| | - Koen Deventer
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
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6
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Redefining dilute and shoot: The evolution of the technique and its application in the analysis of foods and biological matrices by liquid chromatography mass spectrometry. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116284] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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7
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Usman AG, IŞik S, Abba SI, MerİÇlİ F. Artificial intelligence-based models for the qualitative and quantitative prediction of a phytochemical compound using HPLC method. Turk J Chem 2021; 44:1339-1351. [PMID: 33488234 PMCID: PMC7751937 DOI: 10.3906/kim-2003-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/18/2020] [Indexed: 11/03/2022] Open
Abstract
Isoquercitrin is a flavonoid chemical compound that can be extracted from different plant species such as Mangifera indica (mango), Rheum nobile , Annona squamosal , Camellia sinensis (tea), and coriander ( Coriandrum sativum L.). It possesses various biological activities such as the prevention of thromboembolism and has anticancer, antiinflammatory, and antifatigue activities. Therefore, there is a critical need to elucidate and predict the qualitative and quantitative properties of this phytochemical compound using the high performance liquid chromatography (HPLC) technique. In this paper, three different nonlinear models including artificial neural network (ANN), adaptive neuro-fuzzy inference system (ANFIS), and support vector machine (SVM),in addition to a classical linear model [multilinear regression analysis (MLR)], were used for the prediction of the retention time (tR) and peak area (PA) for isoquercitrin using HPLC. The simulation uses concentration of the standard, composition of the mobile phases (MP-A and MP-B), and pH as the corresponding input variables. The performance efficiency of the models was evaluated using relative mean square error (RMSE), mean square error (MSE), determination coefficient (DC), and correlation coefficient (CC). The obtained results demonstrated that all four models are capable of predicting the qualitative and quantitative properties of the bioactive compound. A predictive comparison of the models showed that M3 had the highest prediction accuracy among the three models. Further evaluation of the results showed that ANFIS-M3 outperformed the other models and serves as the best model for the prediction of PA. On the other hand, ANN-M3proved its merit and emerged as the best model for tR simulation. The overall predictive accuracy of the best models showed them to be reliable tools for both qualitative and quantitative determination.
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Affiliation(s)
- Abdullahi Garba Usman
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University Nicosia Turkish Republic of Northern Cyprus
| | - Selin IŞik
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University Nicosia Turkish Republic of Northern Cyprus
| | - Sani Isah Abba
- Department of Physical Planning Development, Maitama Sule University, Kano Nigeria
| | - Filiz MerİÇlİ
- Department of Phytotherapy, Faculty of Pharmacy, Near East University, Nicosia Turkish Republic of Northern Cyprus
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8
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Görgens C, Walker K, Boeser C, Wijeratne N, Martins C, Guddat S, Thevis M. Paper spray mass spectrometry – A potential complementary technique for the detection of polar compounds in sports drug testing. Drug Test Anal 2020; 12:1658-1665. [DOI: 10.1002/dta.2909] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/22/2020] [Accepted: 08/05/2020] [Indexed: 01/03/2023]
Affiliation(s)
- Christian Görgens
- Center for Preventive Doping Research/Institute of Biochemistry German Sport University Cologne Cologne Germany
| | | | | | | | | | - Sven Guddat
- Center for Preventive Doping Research/Institute of Biochemistry German Sport University Cologne Cologne Germany
| | - Mario Thevis
- Center for Preventive Doping Research/Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA) Cologne/Bonn Germany
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9
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De Wilde L, Roels K, Deventer K, Van Eenoo P. Automated sample preparation for the detection and confirmation of hypoxia-inducible factor stabilizers in urine. Biomed Chromatogr 2020; 35:e4970. [PMID: 32840903 DOI: 10.1002/bmc.4970] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/14/2020] [Accepted: 08/21/2020] [Indexed: 12/14/2022]
Abstract
As hypoxia-inducible factor stabilizers (HIFs) can artificially enhance an athlete's erythropoiesis, the World Anti-Doping Agency prohibits their use at all times. Every urine sample for doping control analysis has to be evaluated for the presence of HIFs and therefore sensitive methods that allow high sample throughput are needed. Samples suspicious for the presence of HIFs need to be confirmed following the identification criteria established by the World Anti-Doping Agency. Previous work has shown the advantages of using turbulent flow online solid-phase extraction (SPE) procedures to reduce matrix effects and retention time shifts. Furthermore, the use of online SPE allows for automation and high sample throughput. Both an initial testing procedure (ITP) and a confirmation method were developed and validated, using online SPE liquid chromatography-tandem mass spectrometry (LC-MS/MS), with limits of detection between 0.1 ng/ml (or possibly lower) and 4 ng/ml (or higher for GSK360a) and limits of identification between 0.1 ng/ml (or possibly lower) and 1.17 ng/ml. The ITP only takes 6.5 min per sample. To the best of our knowledge, these are the first ITP and confirmation methods that include more than three HIFs without the need for manual sample preparation.
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Affiliation(s)
- Laurie De Wilde
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
| | - Kris Roels
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
| | - Koen Deventer
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
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10
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Sobolevsky T, Ahrens B. High-throughput liquid chromatography tandem mass spectrometry assay as initial testing procedure for analysis of total urinary fraction. Drug Test Anal 2020; 13:283-298. [PMID: 32852861 DOI: 10.1002/dta.2917] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/16/2020] [Accepted: 08/17/2020] [Indexed: 12/14/2022]
Abstract
In the recent years, a lot of effort was put into the development of multiclass initial testing procedures (ITP) to streamline analytical workflow in antidoping laboratories. Here, a high-throughput assay based on liquid chromatography-triple quadrupole mass spectrometry suitable for use as initial testing procedure covering multiple classes of compounds prohibited in sports is described. Employing a 96-well plate packed with 10 mg of weak cation exchange polymeric sorbent, up to 94 urine samples and their associated positive and negative controls can be processed in less than 3 h with minimal labor. The assay requires a 0.5-ml urine aliquot, which is subjected to enzymatic hydrolysis followed by solid phase extraction, evaporation, and reconstitution in a 96-well collection plate. With a 10-min run time, more than 100 analytes can be detected using electrospray ionization with polarity switching. The assay can be run nearly 24/7 with minimal downtime for instrument maintenance while detecting picogram amounts for the majority of analytes. Having analyzed approximately 28,000 samples, nearly 400 adverse analytical findings were found of which only one tenth were at or above 50% of the minimum required performance level established by the World Anti-Doping Agency. Compounds most often identified were stanozolol, GW1516, ostarine, LGD4033, and clomiphene, with median estimated concentrations in the range of 0.02-0.09 ng/ml (either as parent drug or a metabolite). Our data demonstrate the importance of using a highly sensitive ITP to ensure efficient antidoping testing.
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Affiliation(s)
- Tim Sobolevsky
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, Los Angeles, California, USA
| | - Brian Ahrens
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, Los Angeles, California, USA
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11
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Temerdashev AZ, Dmitrieva EV. Methods for the Determination of Selective Androgen Receptor Modulators. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820070187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Wong JKY, Chan GHM, Choi TLS, Kwok KY, Lau MY, Leung GNW, Wan TSM, Ho ENM. A high-throughput and broad-spectrum screening method for analysing over 120 drugs in horse urine using liquid chromatography-high-resolution mass spectrometry. Drug Test Anal 2020; 12:900-917. [PMID: 32267632 DOI: 10.1002/dta.2799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/25/2020] [Accepted: 03/31/2020] [Indexed: 11/06/2022]
Abstract
A high-throughput method has been developed for the doping control analysis of 124 drug targets, processing up to 154 horse urine samples in as short as 4.5 h, from the time the samples arrive at the laboratory to the reporting deadline of 30 min before the first race, including sample receipt and registration, preparation and instrument analysis and data vetting time. Sample preparation involves a brief enzyme hydrolysis step (30 min) to detect both free and glucuronide-conjugated drug targets. This is followed by extraction using solid-supported liquid extraction (SLE) and analysis using liquid chromatography-high-resolution mass spectrometry (LC-HRMS). The entire set-up comprised of four sets of Biotage Extrahera automation systems for conducting SLE and five to six sets of Orbitrap for instrumental screening using LC-HRMS. Suspicious samples flagged were subject to confirmatory analyses using liquid chromatography-triple quadrupole mass spectrometry. The method comprises 124 drug targets from a spectrum of 41 drug classes covering acidic, basic and neutral drugs. More than 85% of the targets had limits of detection at or below 5 ng/mL in horse urine, with the lowest at 0.02 ng/mL. The method was validated for qualitative identification, including specificity, sensitivity, extraction recovery and precision. Method applicability was demonstrated by the successful detection of different drugs, namely (a) butorphanol, (b) dexamethasone, (c) diclofenac, (d) flunixin and (e) phenylbutazone, in post-race or out-of-competition urine samples collected from racehorses. This method was developed for pre-race urine testing in Hong Kong; however, it is also suitable for testing post-race or out-of-competition urine samples, especially when a quick total analysis time is desired.
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Affiliation(s)
- Jenny K Y Wong
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
| | - George H M Chan
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
| | - Timmy L S Choi
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
| | - Karen Y Kwok
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
| | - Ming Y Lau
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
| | - Gary N W Leung
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
| | - Terence S M Wan
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
| | - Emmie N M Ho
- Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N. T., Hong Kong, China
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13
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Liang Y, Liu J, Zhong Q, Huang T, Zhou T. An automatic online solid-phase dehydrate extraction-ultra-high performance supercritical fluid chromatography-tandem mass spectrometry system using a dilution strategy for the screening of doping agents in human urine. Anal Chim Acta 2020; 1101:184-192. [PMID: 32029110 DOI: 10.1016/j.aca.2019.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 12/02/2019] [Accepted: 12/04/2019] [Indexed: 12/30/2022]
Abstract
An automatic online solid-phase dehydrate extraction (SPDE)-ultra-high performance supercritical fluid chromatography (UHPSFC)-MS/MS system was developed in this study, in which the automatic SPDE procedure was coupled with UHPSFC to allow UHPSFC to analyze aqueous samples directly. Moreover, a pre-column dilution strategy was employed, which focused the analytes in strong desorption solvent on the column head and helped to obtain narrow and symmetric peaks. The online SPDE-UHPSFC-MS/MS system was firstly applied to the screening of 45 prohibited substances in human urine for doping control, during which all the mechanisms and features of the online system were fully studied. The majority (91%) of the target compounds achieved weak matrix effects (80-120%), indicating that the online method was accurate and reliable thanks to the SPDE procedure and efficient UHPSFC separation. Owing to the reduction of the matrix effects, large volume injection and the pre-column dilution, the online system could achieve high sensitivity with the LODs ranging from 0.0380 ng L-1 to 1.24 μg L-1. Under the optimized conditions, the extraction recoveries of 66% target analytes were more than 50%. All the target compounds showed good linearity with linear correlation coefficients higher than 0.9928. The accuracy values of all the spiked prohibited substances were within 80.8-119.7%, while the RSDs% for the intra-/inter-day precision were within 10.8% and 15.4%. Compared with the dilute-and-shoot-ultra-high performance liquid chromatography-MS/MS method, in which the urine samples were simply diluted before analyzing, this online method was superior in sensitivity and reducing matrix effects, which demonstrated its utility in doping control. Compared with the previously reported online SPE-SFC system, the online SPDE-UHPSFC-MS/MS system showed advantages in automation, efficiency, sensitivity and chromatographic performance. In summary, the online SPDE-UHPSFC-MS/MS system is capable of analyzing complex aqueous samples.
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Affiliation(s)
- Yanshan Liang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Jiaqi Liu
- Shimadzu (China) Corporation, Guangzhou Branch, 510010, China
| | - Qisheng Zhong
- Shimadzu (China) Corporation, Guangzhou Branch, 510010, China
| | - Taohong Huang
- Shimadzu (China) Corporation, Shanghai Branch, 200233, China
| | - Ting Zhou
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China.
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Temerdashev A, Dmitrieva E, Azaryan A, Gashimova E. A novel approach to the quantification of urinary aryl‐propionamide‐derived SARMs by UHPLC–MS/MS. Biomed Chromatogr 2019; 34:e4700. [DOI: 10.1002/bmc.4700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/09/2019] [Accepted: 09/13/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Azamat Temerdashev
- Department of Analytical ChemistryKuban State University Krasnodar Russia
| | | | - Alice Azaryan
- Department of Analytical ChemistryKuban State University Krasnodar Russia
| | - Elina Gashimova
- Department of Analytical ChemistryKuban State University Krasnodar Russia
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15
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Ueda T, Tozaki T, Nozawa S, Kinoshita K, Gawahara H. Identification of metabolomic changes in horse plasma after racing by liquid chromatography-high resolution mass spectrometry as a strategy for doping testing. J Equine Sci 2019; 30:55-61. [PMID: 31592223 PMCID: PMC6773618 DOI: 10.1294/jes.30.55] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/01/2019] [Indexed: 12/17/2022] Open
Abstract
Recently, the illegal use of novel technologies, such as gene and cell therapies, has
become a great concern for the horseracing industry. As a potential way to control this,
metabolomics approaches that comprehensively analyze metabolites in biological samples
have been gaining attention. However, it may be difficult to identify metabolic biomarkers
for doping because physiological conditions generally differ between resting and exercise
states in horses. To understand the metabolic differences in horse plasma between the
resting state at training centres and the sample collection stage after racing for doping
test (SAD), we took plasma samples from these two stages (n=30 for each stage) and
compared the metabolites present in these samples by liquid chromatography-high resolution
mass spectrometry. This analysis identified 5,010 peaks, of which 1,256 peaks
(approximately 25%) were annotated using KEGG analysis. Principal component analysis
showed that the resting state and SAD groups had entirely different metabolite
compositions. In particular, the levels of inosine, xanthosine, uric acid, and allantoin,
which are induced by extensive exercise, were significantly increased in the SAD group. In
addition, many metabolites not affected by extensive exercise were also identified. These
results will contribute to the discovery of biomarkers for detecting doping substances
that cannot be detected by conventional methods.
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Affiliation(s)
- Toshiki Ueda
- Drug Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Teruaki Tozaki
- Genetic Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Satoshi Nozawa
- Drug Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Kenji Kinoshita
- Drug Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
| | - Hitoshi Gawahara
- Drug Analysis Department, Laboratory of Racing Chemistry, Tochigi 320-0851, Japan
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16
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Dmitrieva EV, Temerdashev AZ, Azaryan AA, Gashimova EM. Application of Solid-Phase Extraction for the Quantification of Urinary AICAR by Ultra-High Performance Liquid Chromatography–Tandem Mass-Spectrometry. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819090041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Ventura E, Gadaj A, Monteith G, Ripoche A, Healy J, Botrè F, Sterk SS, Buckley T, Mooney MH. Development and validation of a semi-quantitative ultra-high performance liquid chromatography-tandem mass spectrometry method for screening of selective androgen receptor modulators in urine. J Chromatogr A 2019; 1600:183-196. [DOI: 10.1016/j.chroma.2019.04.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/16/2019] [Accepted: 04/17/2019] [Indexed: 12/13/2022]
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18
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Memon N, Qureshi T, Bhanger MI, Malik MI. Recent Trends in Fast Liquid Chromatography for Pharmaceutical Analysis. CURR ANAL CHEM 2019. [DOI: 10.2174/1573411014666180912125155] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Liquid chromatography is the workhorse of analytical laboratories of pharmaceutical
companies for analysis of bulk drug materials, intermediates, drug products, impurities and
degradation products. This efficient technique is impeded by its long and tedious analysis procedures.
Continuous efforts of scientists to reduce the analysis time resulted in the development of three different
approaches namely, HTLC, chromatography using monolithic columns and UHPLC.
Methods:
Modern column technology and advances in chromatographic stationary phase including
silica-based monolithic columns and reduction in particle and column size (UHPLC) have not only
revolutionized the separation power of chromatographic analysis but also have remarkably reduced the
analysis time. Automated ultra high-performance chromatographic systems equipped with state-ofthe-
art software and detection systems have now spawned a new field of analysis, termed as Fast Liquid
Chromatography (FLC). The chromatographic approaches that can be included in FLC are hightemperature
liquid chromatography, chromatography using monolithic column, and ultrahigh performance
liquid chromatography.
Results:
This review summarizes the progress of FLC in pharmaceutical analysis during the period
from year 2008 to 2017 focusing on detecting pharmaceutical drugs in various matrices, characterizing
active compounds of natural products, and drug metabolites. High temperature, change in the mobile
phase, use of monolithic columns, new non-porous, semi-porous and fully porous reduced particle size
of/less than 3μm packed columns technology with high-pressure pumps have been extensively studied
and successively applied to real samples. These factors revolutionized the fast high-performance separations.
Conclusion:
Taking into account the recent development in fast liquid chromatography approaches,
future trends can be clearly predicated. UHPLC must be the most popular approach followed by the
use of monolithic columns. Use of high temperatures during analysis is not a feasible approach especially
for pharmaceutical analysis due to thermosensitive nature of analytes.
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Affiliation(s)
- Najma Memon
- National Centre of Excellence in Analytical Chemistry, Univeristy of Sindh, Jamshoro, Sindh, Pakistan
| | - Tahira Qureshi
- National Centre of Excellence in Analytical Chemistry, Univeristy of Sindh, Jamshoro, Sindh, Pakistan
| | - Muhammad Iqbal Bhanger
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi-75270, Pakistan
| | - Muhammad Imran Malik
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi-75270, Pakistan
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De Wilde L, Roels K, Polet M, Van Eenoo P, Deventer K. Identification and confirmation of diuretics and masking agents in urine by turbulent flow online solid-phase extraction coupled with liquid chromatography-triple quadrupole mass spectrometry for doping control. J Chromatogr A 2018; 1579:31-40. [PMID: 30430987 DOI: 10.1016/j.chroma.2018.10.032] [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: 07/20/2018] [Revised: 10/09/2018] [Accepted: 10/16/2018] [Indexed: 10/28/2022]
Abstract
Diuretics can be misused to force diuresis to achieve weight loss or to mask the intake of a prohibited substance and are therefore prohibited by the World Anti-Doping Agency (WADA). For similar reasons other masking agents (vaptans, probenecid, etc.) are also prohibited by the WADA. The currently employed methods to detect diuretics in urine use extraction or dilute-and-shoot, combined with 1D- liquid chromatography (LC) high resolution mass spectrometry (MS) or LC-triple quadrupole MS. Dilute-and-shoot methods save time and work, but these methods encounter some problems (e.g., peak drift and matrix effect). Therefore, a 2D-LC-MS/MS application was developed, validated and evaluated as an alternative. The effect of a turbulent flow rate was studied by loading samples under different conditions and the turbulent flow rate was found to be more effective in removing matrix interferences. A correlation with the specific gravity was observed. A turbulent flow online solid phase extraction (SPE) method combined with LC-MS/MS for the detection of 50 diuretics and masking agents was developed and validated for identification purposes. This method combines the advantages of dilute-and-shoot while solving the issues of matrix effect and retention time shift. Furthermore, the presented method is compliant with WADA's identification criteria and can hence be used for screening and/or confirmation.
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Affiliation(s)
- Laurie De Wilde
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium.
| | - Kris Roels
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
| | - Michaël Polet
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
| | - Koen Deventer
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
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20
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Wang H, Chen H, Geng J, Zheng Y, Zhang Z, Sun L, Tai G, Zhou Y. Quantitative analysis of dextran in rat plasma using Q-Orbitrap mass spectrometry based on all ion fragmentation strategy. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1095:24-31. [DOI: 10.1016/j.jchromb.2018.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 06/15/2018] [Accepted: 07/14/2018] [Indexed: 01/09/2023]
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Thevis M, Schänzer W. Detection of SARMs in doping control analysis. Mol Cell Endocrinol 2018; 464:34-45. [PMID: 28137616 DOI: 10.1016/j.mce.2017.01.040] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 01/24/2017] [Accepted: 01/24/2017] [Indexed: 11/27/2022]
Abstract
The class of selective androgen receptor modulators (SARMs) has been the subject of intense and dedicated clinical research over the past two decades. Potential therapeutic applications of SARMs are manifold and focus particularly on the treatment of conditions manifesting in muscle loss such as general sarcopenia, cancer-associated cachexia, muscular dystrophy, etc. Consequently, based on the substantial muscle- and bone-anabolic properties of SARMs, these agents constitute substances with significant potential for misuse in sport and have therefore been added to the Word Anti-Doping Agency's (WADA's) Prohibited List in 2008. Since then, numerous adverse analytical findings have been reported for various different SARMs, which has underlined the importance of proactive and preventive anti-doping measures concerning emerging drugs such as these anabolic agents, which have evidently been misused in sport despite the fact that none of these SARMs has yet received full clinical approval. In this review, analytical data on SARMs generated in the context of research conducted for sports drug testing purposes are summarized and state-of-the-art test methods aiming at intact drugs as well as diagnostic urinary metabolites are discussed. Doping control analytical approaches predominantly rely on chromatography hyphenated to mass spectrometry, which have allowed for appropriately covering the considerable variety of pharmacophores present in SARMs such as the non-steroidal representatives ACP-105, BMS-564929, GLPG0492 (DT-200), LG-121071, LGD-2226, LGD-4033/VK 5211, ostarine/enobosarm, RAD-140, S-40503, etc. as well as steroidal compounds such as MK-0773 and YK-11.
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Affiliation(s)
- Mario Thevis
- German Sport University Cologne, Center for Preventive Doping Research/Institute of Biochemistry, Am Sportpark Muengersdorf 6, 50933 Cologne, Germany; European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn, Germany.
| | - Wilhelm Schänzer
- German Sport University Cologne, Center for Preventive Doping Research/Institute of Biochemistry, Am Sportpark Muengersdorf 6, 50933 Cologne, Germany
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22
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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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23
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Eichner D, Van Wagoner RM, Brenner M, Chou J, Leigh S, Wright LR, Flippin LA, Martinelli M, Krug O, Schänzer W, Thevis M. lmplementation of the prolyl hydroxylase inhibitor Roxadustat (FG‐4592) and its main metabolites into routine doping controls. Drug Test Anal 2017; 9:1768-1778. [DOI: 10.1002/dta.2202] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/31/2017] [Accepted: 03/31/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Daniel Eichner
- Sports Medicine Research and Testing Laboratory 560 Arapeen Drive Suite 150A Salt Lake City UT 84108 USA
| | - Ryan M. Van Wagoner
- Sports Medicine Research and Testing Laboratory 560 Arapeen Drive Suite 150A Salt Lake City UT 84108 USA
| | - Mitch Brenner
- FibroGen, Inc. 409 Illinois Street San Francisco CA 94158 USA
| | - James Chou
- FibroGen, Inc. 409 Illinois Street San Francisco CA 94158 USA
| | - Scott Leigh
- FibroGen, Inc. 409 Illinois Street San Francisco CA 94158 USA
| | - Lee R. Wright
- FibroGen, Inc. 409 Illinois Street San Francisco CA 94158 USA
| | - Lee A. Flippin
- FibroGen, Inc. 409 Illinois Street San Francisco CA 94158 USA
| | | | - Oliver Krug
- Institute of Biochemistry ‐ Centre for Preventive Doping ResearchGerman Sport University Cologne Am Sportpark Müngersdorf 6 50933 Cologne Germany
- European Monitoring Center for Emerging Doping Agents Cologne/Bonn Germany
| | - Wilhelm Schänzer
- Institute of Biochemistry ‐ Centre for Preventive Doping ResearchGerman Sport University Cologne Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Mario Thevis
- Institute of Biochemistry ‐ Centre for Preventive Doping ResearchGerman Sport University Cologne Am Sportpark Müngersdorf 6 50933 Cologne Germany
- European Monitoring Center for Emerging Doping Agents Cologne/Bonn Germany
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24
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Bruns K, Mönnikes R, Lackner KJ. Quantitative determination of four immunosuppressants by high resolution mass spectrometry (HRMS). Clin Chem Lab Med 2017; 54:1193-200. [PMID: 26641969 DOI: 10.1515/cclm-2015-0863] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 10/28/2015] [Indexed: 11/15/2022]
Abstract
BACKGROUND Liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) utilizing triple-quadrupole instruments has been widely used for quantification of endogenous compounds, drugs or metabolites in clinical laboratories. In contrast, high-resolution mass spectrometry (HRMS) is typically used for compound identification due to its limited dynamic range. Recently HRMS instruments with enhanced linear dynamic range have become available. The aim of this study was to evaluate HRMS for fast quantitative applications in a clinical laboratory. METHODS A high throughput UPLC-TOF-MS assay for simultaneous quantification of cyclosporin A, tacrolimus, sirolimus and everolimus was developed. All immunosuppressants were analyzed as sodium adducts in TOF-only mode using an Agilent 6540 Q-TOF system. Extracted ion chromatograms of analytes and internal standards were created from full-scan data. The assay was evaluated and compared to an established LC-MS/MS assay according to CLSI recommendations. RESULTS The novel HRMS assay has a total run time of 3 min. The assay is linear in a clinical relevant concentration range for all four immunosupressants. Method correlations vs. established LC-MS/MS assay were between R2=0.99 and R2=0.97. Total coefficients of variation (CVT) ranges were 4.5%-6.4% (tacrolimus), 7.4%-8.0% (sirolimus), 8.0%-8.8% (everolimus) and 6.1%-7.4% (cyclosporine A) for three relevant concentration levels each. CONCLUSIONS High resolution TOF-MS and LC-MS/MS show equivalent quantitative performance for monitoring of cyclosporin A, tacrolimus, sirolimus and everolimus. HRMS has the potential to replace conventional LC-MS/MS in clinical laboratories because it simplifies assay development (no optimization of fragmentations and product ions necessary) and its full-scan data can provide additional information.
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25
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Helmlin HJ, Mürner A, Steiner S, Kamber M, Weber C, Geyer H, Guddat S, Schänzer W, Thevis M. Detection of the diuretic hydrochlorothiazide in a doping control urine sample as the result of a non-steroidal anti-inflammatory drug (NSAID) tablet contamination. Forensic Sci Int 2016; 267:166-172. [DOI: 10.1016/j.forsciint.2016.08.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 08/07/2016] [Accepted: 08/19/2016] [Indexed: 11/24/2022]
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26
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Görgens C, Guddat S, Thomas A, Wachsmuth P, Orlovius AK, Sigmund G, Thevis M, Schänzer W. Simplifying and expanding analytical capabilities for various classes of doping agents by means of direct urine injection high performance liquid chromatography high resolution/high accuracy mass spectrometry. J Pharm Biomed Anal 2016; 131:482-496. [PMID: 27693991 DOI: 10.1016/j.jpba.2016.09.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 09/06/2016] [Accepted: 09/13/2016] [Indexed: 12/13/2022]
Abstract
So far, in sports drug testing compounds of different classes are processed and measured using different screening procedures. The constantly increasing number of samples in doping analysis, as well as the large number of substances with doping related, pharmacological effects require the development of even more powerful assays than those already employed in sports drug testing, indispensably with reduced sample preparation procedures. The analysis of native urine samples after direct injection provides a promising analytical approach, which thereby possesses a broad applicability to many different compounds and their metabolites, without a time-consuming sample preparation. In this study, a novel multi-target approach based on liquid chromatography and high resolution/high accuracy mass spectrometry is presented to screen for more than 200 analytes of various classes of doping agents far below the required detection limits in sports drug testing. Here, classic groups of drugs as diuretics, stimulants, β2-agonists, narcotics and anabolic androgenic steroids as well as various newer target compounds like hypoxia-inducible factor (HIF) stabilizers, selective androgen receptor modulators (SARMs), selective estrogen receptor modulators (SERMs), plasma volume expanders and other doping related compounds, listed in the 2016 WADA prohibited list were implemented. As a main achievement, growth hormone releasing peptides could be implemented, which chemically belong to the group of small peptides (<2kDa) and are commonly determined by laborious and time-consuming stand-alone assays. The assay was fully validated for qualitative purposes considering the parameters specificity, robustness (rRT: <2%), intra- (CV: 1.7-18.4 %) and inter-day precision (CV: 2.3-18.3%) at three concentration levels, linearity (R2>0.99), limit of detection (0.1-25ng/mL; 3'OH-stanozolol glucuronide: 50pg/mL; dextran/HES: 10μg/mL) and matrix effects.
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Affiliation(s)
- Christian Görgens
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany.
| | - Sven Guddat
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Andreas Thomas
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Philipp Wachsmuth
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Anne-Katrin Orlovius
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Gerd Sigmund
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Wilhelm Schänzer
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
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Salamin O, De Angelis S, Tissot JD, Saugy M, Leuenberger N. Autologous Blood Transfusion in Sports: Emerging Biomarkers. Transfus Med Rev 2016; 30:109-15. [DOI: 10.1016/j.tmrv.2016.05.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/19/2016] [Indexed: 12/12/2022]
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28
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Ahrens BD, Kucherova Y, Butch AW. Detection of Stimulants and Narcotics by Liquid Chromatography-Tandem Mass Spectrometry and Gas Chromatography-Mass Spectrometry for Sports Doping Control. Methods Mol Biol 2016; 1383:247-263. [PMID: 26660193 DOI: 10.1007/978-1-4939-3252-8_26] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sports drug testing laboratories are required to detect several classes of compounds that are prohibited at all times, which include anabolic agents, peptide hormones, growth factors, beta-2 agonists, hormones and metabolic modulators, and diuretics/masking agents. Other classes of compounds such as stimulants, narcotics, cannabinoids, and glucocorticoids are also prohibited, but only when an athlete is in competition. A single class of compounds can contain a large number of prohibited substances and all of the compounds should be detected by the testing procedure. Since there are almost 70 stimulants on the prohibited list it can be a challenge to develop a single screening method that will optimally detect all the compounds. We describe a combined liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-mass spectrometry (GC-MS) testing method for detection of all the stimulants and narcotics on the World Anti-Doping Agency prohibited list. Urine for LC-MS/MS testing does not require sample pretreatment and is a direct dilute and shoot method. Urine samples for the GC-MS method require a liquid-liquid extraction followed by derivatization with trifluoroacetic anhydride.
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Affiliation(s)
- Brian D Ahrens
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, 2122 Granville Avenue, Los Angeles, CA, 90025-6106, USA
| | - Yulia Kucherova
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, 2122 Granville Avenue, Los Angeles, CA, 90025-6106, USA
| | - Anthony W Butch
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, 2122 Granville Avenue, Los Angeles, CA, 90025-6106, USA.
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Thomas A, Görgens C, Guddat S, Thieme D, Dellanna F, Schänzer W, Thevis M. Simplifying and expanding the screening for peptides <2 kDa by direct urine injection, liquid chromatography, and ion mobility mass spectrometry. J Sep Sci 2015; 39:333-41. [DOI: 10.1002/jssc.201501060] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 10/20/2015] [Accepted: 11/02/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Andreas Thomas
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | - Christian Görgens
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | - Sven Guddat
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne; Cologne Germany
| | - Detlef Thieme
- Institute of Doping Analysis and Sports Biochemistry (IDAS) Dresden; Germany
| | | | - Wilhelm Schänzer
- 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
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30
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Nicoli R, Guillarme D, Leuenberger N, Baume N, Robinson N, Saugy M, Veuthey JL. Analytical Strategies for Doping Control Purposes: Needs, Challenges, and Perspectives. Anal Chem 2015; 88:508-23. [DOI: 10.1021/acs.analchem.5b03994] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Raul Nicoli
- Swiss
Laboratory for Doping Analyses, University Center of Legal Medicine,
Lausanne-Geneva, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Chemin des Croisettes 22, 1066 Epalinges, Switzerland
| | - Davy Guillarme
- School
of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Boulevard d’Yvoy 20, 1211 Geneva 4, Switzerland
| | - Nicolas Leuenberger
- Swiss
Laboratory for Doping Analyses, University Center of Legal Medicine,
Lausanne-Geneva, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Chemin des Croisettes 22, 1066 Epalinges, Switzerland
| | - Norbert Baume
- Swiss
Laboratory for Doping Analyses, University Center of Legal Medicine,
Lausanne-Geneva, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Chemin des Croisettes 22, 1066 Epalinges, Switzerland
| | - Neil Robinson
- Swiss
Laboratory for Doping Analyses, University Center of Legal Medicine,
Lausanne-Geneva, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Chemin des Croisettes 22, 1066 Epalinges, Switzerland
| | - Martial Saugy
- Swiss
Laboratory for Doping Analyses, University Center of Legal Medicine,
Lausanne-Geneva, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Chemin des Croisettes 22, 1066 Epalinges, Switzerland
| | - Jean-Luc Veuthey
- School
of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Boulevard d’Yvoy 20, 1211 Geneva 4, Switzerland
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31
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Thomas A, Walpurgis K, Tretzel L, Brinkkötter P, Fichant E, Delahaut P, Schänzer W, Thevis M. Expanded test method for peptides >2 kDa employing immunoaffinity purification and LC-HRMS/MS. Drug Test Anal 2015; 7:990-8. [DOI: 10.1002/dta.1868] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 08/04/2015] [Accepted: 08/16/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Andreas Thomas
- Center for Preventive Doping Research and Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Katja Walpurgis
- Center for Preventive Doping Research and Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Laura Tretzel
- Center for Preventive Doping Research and Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Paul Brinkkötter
- Center for Molecular Medicine Cologne; University of Cologne; Robert-Koch-Str. 21 Germany
| | - Eric Fichant
- CER Groupe - Département Santé; Rue du Point du Jour, 8 Marloie Belgium
| | - Philippe Delahaut
- CER Groupe - Département Santé; Rue du Point du Jour, 8 Marloie Belgium
| | - Wilhelm Schänzer
- Center for Preventive Doping Research and Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Mario Thevis
- Center for Preventive Doping Research and Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
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32
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Thevis M, Milosovich S, Licea-Perez H, Knecht D, Cavalier T, Schänzer W. Mass spectrometric characterization of a prolyl hydroxylase inhibitor GSK1278863, its bishydroxylated metabolite, and its implementation into routine doping controls. Drug Test Anal 2015; 8:858-63. [PMID: 26361079 DOI: 10.1002/dta.1870] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 08/17/2015] [Indexed: 11/11/2022]
Abstract
Drug candidates, which have the potential of enhancing athletic performance represent a risk of being misused in elite sport. Therefore, there is a need for early consideration by anti-doping authorities and implementation into sports drug testing programmes. The hypoxia-inducible factor (HIF) or prolyl hydroxylase inhibitor (PHI) GSK1278863 represents an advanced candidate of an emerging class of therapeutics that possess substantial potential for abuse in sport due to their capability to stimulate the biogenesis of erythrocytes and, consequently, the individual's oxygen transport capacity. A thorough characterization of such analytes by technologies predominantly used for doping control purposes and the subsequent implementation of the active drug and/or its main urinary metabolite(s) are vital for comprehensive, preventive, and efficient anti-doping work. In the present study, the HIF PHI drug candidate GSK1278863 (comprising a 6-hydroxypyrimidine-2,4-dione nucleus) and its bishydroxylated metabolite M2 (GSK2391220A) were studied regarding their mass spectrometric behaviour under electrospray ionization (ESI-MS/MS) conditions. Synthesized reference materials were used to elucidate dissociation pathways by means of quadrupole/time-of-flight high resolution/high accuracy tandem mass spectrometry, and their detection from spiked urine and elimination study urine samples under routine doping control conditions was established using liquid chromatography-electrospray ionization-tandem mass spectrometry with direct injection. Dissociation pathways to diagnostic product ions of GSK1278863 (e.g. m/z 291, 223, and 122) were proposed as substantiated by determined elemental compositions and MS(n) experiments as well as comparison to spectra of the bishydroxylated analogue M2. An analytical assay based on direct urine injection using liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) was developed for the simultaneous determination of GSK1278863 in combination with its bishydroxylated metabolite M2. Validation parameters including limit of detection (0.5-1 ng/mL), linearity, specificity, ion suppression/enhancement (<10%), intra- and inter-day precision (6-22%) were determined, demonstrating the fitness-for-purpose of the assay for doping control screening of urine samples for the presence of the drug candidate and its main metabolite and for expanding current anti-doping efforts to this new class of therapeutics. However, administration study urine sample analysis suggested the use of M2 rather than the intact drug due to extensive metabolic conversion. Copyright © 2015 John Wiley & Sons, Ltd.
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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
| | | | | | - Dana Knecht
- GlaxoSmithKline, King of Prussia, PA, 19406, USA
| | - Tom Cavalier
- GlaxoSmithKline, King of Prussia, PA, 19406, USA
| | - 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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33
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Lawson AJ, Shipman KE, George S, Dasgupta I. A Novel 'Dilute-and-Shoot' Liquid Chromatography-Tandem Mass Spectrometry Method for the Screening of Antihypertensive Drugs in Urine. J Anal Toxicol 2015; 40:17-27. [PMID: 26333988 DOI: 10.1093/jat/bkv102] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Arterial hypertension is one of the most preventable causes of premature morbidity and mortality with resistant hypertension reported to be present in 5-30% of the total hypertensive population. Despite the poor prognosis, as many as 53% of those with resistant hypertension are reported to be nonadherent to their prescribed medication. An objective test of adherence, which is easy to administer, quick, inexpensive and reliable, is therefore needed to identify patients with true resistance to antihypertensive drugs to optimize their treatment. We have developed a novel LC-MS-MS method for the detection of 23 commonly prescribed antihypertensive medications in urine. The validated method was subsequently applied to the analysis of urine from a cohort of 49 individuals who were taking at least one antihypertensive agent in the screening profile to determine their adherence. The screening method was found to be reproducible, sensitive and specific with the limit of detection ranging from 0.1 to 1.0 µg/L. Sample preparation is rapid (30 s) and simple, with a total analysis time of 11 min. The assay successfully identified the majority of drugs our cohort had admitted to taking (88%) with drugs not detected in urine, potentially indicating nonadherence to prescribed medication. The performance of this simple, robust LC-MS-MS procedure is suitable for screening urine for the presence of commonly prescribed antihypertensive medications. The assay, which can easily be implemented in other laboratories, has the potential to significantly improve investigation and management of resistant hypertension.
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Affiliation(s)
- Alexander J Lawson
- Department of Toxicology, Heart of England NHS Foundation Trust, Birmingham, UK
| | - Kate E Shipman
- Glaxo Renal Unit, Heart of England NHS Foundation Trust, Birmingham, UK
| | - Stephen George
- Department of Toxicology, Heart of England NHS Foundation Trust, Birmingham, UK
| | - Indranil Dasgupta
- Glaxo Renal Unit, Heart of England NHS Foundation Trust, Birmingham, UK
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34
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Dong Y, Yan K, Ma Y, Wang S, He G, Deng J, Yang Z. A Sensitive Dilute-and-Shoot Approach for the Simultaneous Screening of 71 Stimulants and 7 Metabolites in Human Urine by LC–MS-MS with Dynamic MRM. J Chromatogr Sci 2015; 53:1528-35. [DOI: 10.1093/chromsci/bmv048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Indexed: 11/13/2022]
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35
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"Dilute-and-inject" multi-target screening assay for highly polar doping agents using hydrophilic interaction liquid chromatography high resolution/high accuracy mass spectrometry for sports drug testing. Anal Bioanal Chem 2015; 407:5365-79. [PMID: 25925859 DOI: 10.1007/s00216-015-8699-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/24/2015] [Accepted: 04/13/2015] [Indexed: 10/23/2022]
Abstract
In the field of LC-MS, reversed phase liquid chromatography is the predominant method of choice for the separation of prohibited substances from various classes in sports drug testing. However, highly polar and charged compounds still represent a challenging task in liquid chromatography due to their difficult chromatographic behavior using reversed phase materials. A very promising approach for the separation of hydrophilic compounds is hydrophilic interaction liquid chromatography (HILIC). Despite its great potential and versatile advantages for the separation of highly polar compounds, HILIC is up to now not very common in doping analysis, although most manufacturers offer a variety of HILIC columns in their portfolio. In this study, a novel multi-target approach based on HILIC high resolution/high accuracy mass spectrometry is presented to screen for various polar stimulants, stimulant sulfo-conjugates, glycerol, AICAR, ethyl glucuronide, morphine-3-glucuronide, and myo-inositol trispyrophosphate after direct injection of diluted urine specimens. The usage of an effective online sample cleanup and a zwitterionic HILIC analytical column in combination with a new generation Hybrid Quadrupol-Orbitrap® mass spectrometer enabled the detection of highly polar analytes without any time-consuming hydrolysis or further purification steps, far below the required detection limits. The methodology was fully validated for qualitative and quantitative (AICAR, glycerol) purposes considering the parameters specificity; robustness (rRT < 2.0%); linearity (R > 0.99); intra- and inter-day precision at low, medium, and high concentration levels (CV < 20%); limit of detection (stimulants and stimulant sulfo-conjugates < 10 ng/mL; norfenefrine; octopamine < 30 ng/mL; AICAR < 10 ng/mL; glycerol 100 μg/mL; ETG < 100 ng/mL); accuracy (AICAR 103.8-105.5%, glycerol 85.1-98.3% at three concentration levels) and ion suppression/enhancement effects.
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36
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Görgens C, Guddat S, Dib J, Geyer H, Schänzer W, Thevis M. Mildronate (Meldonium) in professional sports - monitoring doping control urine samples using hydrophilic interaction liquid chromatography - high resolution/high accuracy mass spectrometry. Drug Test Anal 2015; 7:973-9. [PMID: 25847280 PMCID: PMC5066279 DOI: 10.1002/dta.1788] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 02/20/2015] [Accepted: 02/23/2015] [Indexed: 12/20/2022]
Abstract
To date, substances such as Mildronate (Meldonium) are not on the radar of anti‐doping laboratories as the compound is not explicitly classified as prohibited. However, the anti‐ischemic drug Mildronate demonstrates an increase in endurance performance of athletes, improved rehabilitation after exercise, protection against stress, and enhanced activations of central nervous system (CNS) functions. In the present study, the existing evidence of Mildronate's usage in sport, which is arguably not (exclusively) based on medicinal reasons, is corroborated by unequivocal analytical data allowing the estimation of the prevalence and extent of misuse in professional sports. Such data are vital to support decision‐making processes, particularly regarding the ban on drugs in sport. Due to the growing body of evidence (black market products and athlete statements) concerning its misuse in sport, adequate test methods for the reliable identification of Mildronate are required, especially since the substance has been added to the 2015 World Anti‐Doping Agency (WADA) monitoring program. In the present study, two approaches were established using an in‐house synthesized labelled internal standard (Mildronate‐D3). One aimed at the implementation of the analyte into routine doping control screening methods to enable its monitoring at the lowest possible additional workload for the laboratory, and another that is appropriate for the peculiar specifics of the analyte, allowing the unequivocal confirmation of findings using hydrophilic interaction liquid chromatography‐high resolution/high accuracy mass spectrometry (HILIC‐HRMS). Here, according to applicable regulations in sports drug testing, a full qualitative validation was conducted. The assay demonstrated good specificity, robustness (rRT=0.3%), precision (intra‐day: 7.0–8.4%; inter‐day: 9.9–12.9%), excellent linearity (R>0.99) and an adequate lower limit of detection (<10 ng/mL). © 2015 The Authors. Drug Testing and Analysis published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Christian Görgens
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - Sven Guddat
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - Josef Dib
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - Hans Geyer
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - Wilhelm Schänzer
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn, Germany
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37
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Bejder J, Hoffmann MF, Ashenden M, Nordsborg NB, Karstoft K, Mørkeberg J. Acute hyperhydration reduces athlete biological passport OFF-hr score. Scand J Med Sci Sports 2015; 26:338-47. [PMID: 25773052 DOI: 10.1111/sms.12438] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2015] [Indexed: 12/01/2022]
Abstract
Anecdotal evidence suggests that athletes hyperhydrate to mask prohibited substances in urine and potentially counteract suspicious fluctuations in blood parameters in the athlete biological passport (ABP). It is examined if acute hyperhydration changes parameters included in the ABP. Twenty subjects received recombinant human erythropoietin (rhEPO) for 3 weeks. After 10 days of rhEPO washout, 10 subjects ingested normal amount of water (∼ 270 mL), whereas the remaining 10 ingested a 1000 mL bolus of water. Blood variables were measured 20, 40, 60, and 80 min after ingestion. Three days later, the subjects were crossed-over with regard to water ingestion and the procedure was repeated. OFF-hr was reduced by ∼ 4%, ∼ 3%, and ∼ 2% at 40, 60, and 80 min, respectively, after drinking 1000 mL of water, compared with normal water ingestion (P < 0.05). Forty percent of the subjects were identified with atypical blood profiles (99% specificity level) before drinking 1000 mL of water, whereas 11% (n = 18), 10% and 11% (n = 18) were identified 40, 60, and 80 min, respectively, after ingestion. This was different (P < 0.05) compared with normal water intake, where 45% of the subjects were identified before ingestion, and 54% (n = 19), 45%, and 47% (n = 19) were identified 40, 60, and 80 min, respectively, after ingestion. In conclusion, acute hyperhydration reduces ABP OFF-hr and reduces ABP sensitivity.
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Affiliation(s)
- J Bejder
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - M F Hoffmann
- Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | | | - N B Nordsborg
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - K Karstoft
- Centre of Inflammation and Metabolism, Centre for Physical Activity Research, Department of Infectious Diseases, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - J Mørkeberg
- Metabolic Mass Spectrometry Facility, Rigshospitalet, Copenhagen, Denmark
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Jeong ES, Kim SH, Cha EJ, Lee KM, Kim HJ, Lee SW, Kwon OS, Lee J. Simultaneous analysis of 210 prohibited substances in human urine by ultrafast liquid chromatography/tandem mass spectrometry in doping control. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:367-384. [PMID: 26406349 DOI: 10.1002/rcm.7113] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 11/30/2014] [Accepted: 12/01/2014] [Indexed: 06/05/2023]
Abstract
RATIONALE Doping analysis is a two-step process consisting of a screening step for prohibited substances and a confirmation step to verify the presence of specific substances found during the screening. The entire process must be performed within a limited time period, but traditional screening procedures commonly employ separate analytical methods for each class of prohibited substances being screened and thus require a great deal of human resources and instrumentation. A single simple and rapid multiresidue analytical method that could accommodate multiple classes of prohibited substances would be extraordinarily useful in doping analyses. METHODS Urine samples were extracted via two consecutive liquid-liquid extractions at different pH values following enzymatic hydrolysis. Analyses were performed by ultrafast liquid chromatography/triple-quadrupole mass spectrometry with polarity switching and time-dependent selected reaction monitoring. RESULTS We developed a rapid multiresidue screening and confirmation method for efficient high-throughput doping analyses. The present method was validated with regard to the limits of detection (0.01-100.0 ng/mL for screening analyses and 0.2-500.0 ng/mL for confirmation assays), matrix effects (48.9-118.9%), recovery (20.6-119.7%) and intra- (0.6-17.6%) and inter-day (4.0-20.0%) precision. CONCLUSIONS A multiresidue analytical method was developed and validated for screening and confirming the presence of performance-enhancing drugs. A total of 210 substances from diverse classes of prohibited substances were successfully identified with an analytical run time of 10 min.
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Affiliation(s)
- Eun Sook Jeong
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 136-791, Korea
- Department of Pharmacology and Pharmacogenomics Research Center, School of Medicine, Inje University, 875, Haeun-daero, Haeundae-gu, Busan, Korea
| | - 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
| | - Sang-Won Lee
- Department of Chemistry, Research Institute for Natural Sciences, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 136-701, 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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Monfort N, Martínez L, Bergés R, Segura J, Ventura R. Screening method for stimulants in urine by UHPLC-MS/MS: identification of isomeric compounds. Drug Test Anal 2015; 7:819-30. [DOI: 10.1002/dta.1776] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 01/08/2015] [Accepted: 01/08/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Núria Monfort
- Grup de Recerca en Bioanàlisi i Serveis Analítics; IMIM (Institut Hospital del Mar d'Investigacions Mèdiques); Barcelona Spain
| | - Laura Martínez
- Grup de Recerca en Bioanàlisi i Serveis Analítics; IMIM (Institut Hospital del Mar d'Investigacions Mèdiques); Barcelona Spain
| | - Rosa Bergés
- Grup de Recerca en Bioanàlisi i Serveis Analítics; IMIM (Institut Hospital del Mar d'Investigacions Mèdiques); Barcelona Spain
| | - Jordi Segura
- Grup de Recerca en Bioanàlisi i Serveis Analítics; IMIM (Institut Hospital del Mar d'Investigacions Mèdiques); Barcelona Spain
- Departament de Ciències Experimentals i de la Salut; Universitat Pompeu Fabra, UPF; Barcelona Spain
| | - Rosa Ventura
- Grup de Recerca en Bioanàlisi i Serveis Analítics; IMIM (Institut Hospital del Mar d'Investigacions Mèdiques); Barcelona Spain
- Departament de Ciències Experimentals i de la Salut; Universitat Pompeu Fabra, UPF; Barcelona Spain
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40
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Sobolevsky T, Krotov G, Dikunets M, Nikitina M, Mochalova E, Rodchenkov G. Anti-doping analyses at the Sochi Olympic and Paralympic Games 2014. Drug Test Anal 2014; 6:1087-101. [PMID: 25312500 DOI: 10.1002/dta.1734] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 09/21/2014] [Accepted: 09/22/2014] [Indexed: 12/25/2022]
Abstract
The laboratory anti-doping services during XXII Winter Olympic and XI Paralympic games in Sochi in 2014 were provided by a satellite laboratory facility located within the strictly secured Olympic Park. This laboratory, established and operated by the personnel of Antidoping Center, Moscow, has been authorized by the World Anti-Doping Agency (WADA) to conduct doping control analyses. The 4-floor building accommodated the most advanced analytical instrumentation and became a place of attraction for more than 50 Russian specialists and 25 foreign experts, including independent observers. In total, 2134 urine and 479 blood samples were delivered to the laboratory and analyzed during the Olympic Games (OG), and 403 urine and 108 blood samples - during the Paralympic Games (PG). The number of erythropoietin tests requested in urine was 946 and 166 at the OG and PG, respectively. Though included in the test distribution plan, a growth hormone analysis was cancelled by the Organizing Committee just before the Games. Several adverse analytical findings have been reported including pseudoephedrine (1 case), methylhexaneamine (4 cases), trimetazidine (1 case), dehydrochloromethyltestosterone (1 case), clostebol (1 case), and a designer stimulant N-ethyl-1-phenylbutan-2-amine (1 case).
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Affiliation(s)
- Tim Sobolevsky
- Moscow Antidoping Centre, 105005 Moscow, Elizavetinsky per. 10, Russia
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41
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Comparative evaluation of seven different sample treatment approaches for large-scale multiclass sport drug testing in urine by liquid chromatography–mass spectrometry. J Chromatogr A 2014; 1361:34-42. [DOI: 10.1016/j.chroma.2014.07.090] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/26/2014] [Accepted: 07/29/2014] [Indexed: 11/19/2022]
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42
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Methods for urine drug testing using one-step dilution and direct injection in combination with LC–MS/MS and LC–HRMS. Bioanalysis 2014; 6:2229-44. [DOI: 10.4155/bio.14.192] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The advent of LC combined with MS made it possible to design analytical methods for urine drug testing based on the very simple concept of diluting urine with an internal standard as the sole preparation procedure prior to instrumental analysis. The number of publications using this method design increased after the development of high-efficiency LC based on sub-2 μm particles. The success of this method design for drug testing, doping control and toxicological investigations of urine is now well documented and comprise both screening and confirmation methods. The nondiscriminating nature of this method design makes it even more attractive in combination with high-resolution MS for multicomponent target and general unknown analysis applications.
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Piper T, Thomas A, Baume N, Sobolevsky T, Saugy M, Rodchenkov G, Schänzer W, Thevis M. Determination of ¹³C/¹² C ratios of endogenous urinary 5-amino-imidazole-4-carboxamide 1β-D-ribofuranoside (AICAR). RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:1194-1202. [PMID: 24760559 DOI: 10.1002/rcm.6891] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 03/04/2014] [Accepted: 03/05/2014] [Indexed: 06/03/2023]
Abstract
RATIONALE AICAR (5-aminoimidazole-4-carboxamide 1β-D-ribofuranoside) is prohibited in sport according to rules established by the World Anti-Doping Agency. Doping control laboratories identify samples where AICAR abuse is suspected by measuring its urinary concentration and comparing the observed level with naturally occurring concentrations. As the inter-individual variance of urinary AICAR concentrations is large, this approach requires a complementary method to unambiguously prove the exogenous origin of AICAR. Therefore, a method for the determination of carbon isotope ratios (CIRs) of urinary AICAR has been developed and validated. METHODS Concentrated urine samples were fractionated by means of liquid chromatography for analyte cleanup. Derivatization of AICAR yielding the trimethylsilylated analog was necessary to enable CIR determinations by gas chromatography/combustion/isotope ratio mass spectrometry. The method was tested for its repeatability and stability over time and a linear mixing model was applied to test for possible isotopic discrimination. A reference population of n = 63 males and females was investigated to calculate appropriate reference limits to differentiate endogenous from exogenous urinary AICAR. These limits were tested by an AICAR elimination study. RESULTS The developed method fulfills all the requirements for adequate sports drug testing and was found to be fit for purpose. The investigated reference population showed a larger variability in the CIR of AICAR than of the endogenous steroids. Nevertheless, the calculated thresholds for differences between AICAR and endogenous steroids can be applied straightforwardly to evaluate suspicious doping control samples with the same statistical confidence as established e.g. for testosterone misuse. These thresholds enabled the detection of a single oral AICAR administration for more than 40 h. CONCLUSIONS Determination of thee CIRs is the method of choice to distinguish between an endogenous and an exogenous source of urinary AICAR. The developed method will enable investigations into doping control samples with elevated urinary concentrations of AICAR and clearly differentiate between naturally produced/elevated and illicitly administered AICAR.
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Affiliation(s)
- Thomas Piper
- German Sport University Cologne, Center for Preventive Doping Research - Institute of Biochemistry, Am Sportpark Müngersdorf 6, 50933, Köln, Germany
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Sigmund G, Koch A, Orlovius AK, Guddat S, Thomas A, Schänzer W, Thevis M. Doping control analysis of trimetazidine and characterization of major metabolites using mass spectrometric approaches. Drug Test Anal 2014; 6:1197-205. [DOI: 10.1002/dta.1680] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 04/30/2014] [Accepted: 05/03/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Gerd Sigmund
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Anja Koch
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Anne-Katrin Orlovius
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Sven Guddat
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6 50933 Cologne Germany
| | - Andreas Thomas
- 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
| | - 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 (EuMoCEDA); Cologne/Bonn Germany
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Comprehensive automation of the solid phase extraction gas chromatographic mass spectrometric analysis (SPE-GC/MS) of opioids, cocaine, and metabolites from serum and other matrices. Anal Bioanal Chem 2014; 406:4443-51. [PMID: 24788888 PMCID: PMC4077260 DOI: 10.1007/s00216-014-7815-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 02/28/2014] [Accepted: 04/03/2014] [Indexed: 11/09/2022]
Abstract
The analysis of opioids, cocaine, and metabolites from blood serum is a routine task in forensic laboratories. Commonly, the employed methods include many manual or partly automated steps like protein precipitation, dilution, solid phase extraction, evaporation, and derivatization preceding a gas chromatography (GC)/mass spectrometry (MS) or liquid chromatography (LC)/MS analysis. In this study, a comprehensively automated method was developed from a validated, partly automated routine method. This was possible by replicating method parameters on the automated system. Only marginal optimization of parameters was necessary. The automation relying on an x-y-z robot after manual protein precipitation includes the solid phase extraction, evaporation of the eluate, derivatization (silylation with N-methyl-N-trimethylsilyltrifluoroacetamide, MSTFA), and injection into a GC/MS. A quantitative analysis of almost 170 authentic serum samples and more than 50 authentic samples of other matrices like urine, different tissues, and heart blood on cocaine, benzoylecgonine, methadone, morphine, codeine, 6-monoacetylmorphine, dihydrocodeine, and 7-aminoflunitrazepam was conducted with both methods proving that the analytical results are equivalent even near the limits of quantification (low ng/ml range). To our best knowledge, this application is the first one reported in the literature employing this sample preparation system.
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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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Deventer K, Pozo O, Verstraete A, Van Eenoo P. Dilute-and-shoot-liquid chromatography-mass spectrometry for urine analysis in doping control and analytical toxicology. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.10.012] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Höppner S, Delahaut P, Schänzer W, Thevis M. Mass spectrometric studies on the in vivo metabolism and excretion of SIRT1 activating drugs in rat urine, dried blood spots, and plasma samples for doping control purposes. J Pharm Biomed Anal 2014; 88:649-59. [DOI: 10.1016/j.jpba.2013.10.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 10/09/2013] [Accepted: 10/12/2013] [Indexed: 12/24/2022]
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Boyacı E, Gorynski K, Rodriguez-Lafuente A, Bojko B, Pawliszyn J. Introduction of solid-phase microextraction as a high-throughput sample preparation tool in laboratory analysis of prohibited substances. Anal Chim Acta 2013; 809:69-81. [PMID: 24418135 DOI: 10.1016/j.aca.2013.11.056] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/19/2013] [Accepted: 11/29/2013] [Indexed: 10/25/2022]
Abstract
A fully automated, high-throughput method based on thin-film solid-phase microextraction (SPME) and liquid chromatography-mass spectrometry was developed for simultaneous quantitative analysis of 110 doping compounds, selected from ten classes and varying in physical and chemical properties. Among four tested extraction phases, C18 blades were chosen, as they provided optimum recoveries and the lowest carryover effect. The SPME method was optimized in terms of extraction pH, ionic strength of the sample, washing solution, extraction and desorption times for analysis of urine samples. Chromatographic separation was obtained in reversed-phase model; for detection, two mass spectrometers were used: triple quadrupole and full scan orbitrap. These combinations allowed for selective analysis of targeted compounds, as well as a retrospective study for known and unknown compounds. The developed method was validated according to the Food and Drug Administration (FDA) criteria, taking into account Minimum Required Performance Level (MRPL) values required by the World Anti-Doping Agency (WADA). In addition to analysis of free substances, it was also shown that the proposed method is able to extract the glucuronated forms of the compounds. The developed assay offers fast and reliable analysis of various prohibited substances, an attractive alternative to the standard methods that are currently used in anti-doping laboratories.
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Affiliation(s)
- Ezel Boyacı
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Krzysztof Gorynski
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Angel Rodriguez-Lafuente
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Barbara Bojko
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1.
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Orlovius AK, Guddat S, Gütschow M, Thevis M, Schänzer W. In vitro synthesis and characterisation of three fenoterol sulfoconjugates detected in fenoterol post-administration urine samples. Anal Bioanal Chem 2013; 405:9477-87. [DOI: 10.1007/s00216-013-7383-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 09/16/2013] [Accepted: 09/16/2013] [Indexed: 11/30/2022]
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