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Thomas A, Thevis M. Recent advances in mass spectrometry for the detection of doping. Expert Rev Proteomics 2024; 21:27-39. [PMID: 38214680 DOI: 10.1080/14789450.2024.2305432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/08/2024] [Indexed: 01/13/2024]
Abstract
INTRODUCTION The analysis of doping control samples is preferably performed by mass spectrometry, because obtained results meet the highest analytical standards and ensure an impressive degree of reliability. The advancement in mass spectrometry and all its associated technologies thus allow for continuous improvements in doping control analysis. AREAS COVERED Modern mass spectrometric systems have reached a status of increased sensitivity, robustness, and specificity within the last decade. The improved sensitivity in particular has, on the other hand, also led to the detection of drug residues that were attributable to scenarios where the prohibited substances were not administered consciously but rather by the unconscious ingestion of or exposure to contaminated products. These scenarios and their doubtless clarification represent a great challenge. Here, too, modern MS systems and their applications can provide good insights in the interpretation of dose-related metabolism of prohibited substances. In addition to the development of new instruments itself, software-assisted analysis of the sometimes highly complex data is playing an increasingly important role and facilitating the work of doping control laboratories. EXPERT OPINION The sensitive analysis and evaluation of a higher number of samples in a shorter time is made possible by the ongoing developments in mass spectrometry.
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Affiliation(s)
- Andreas Thomas
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn, Germany
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Chen W, Cheng X, Ma Y, Chen N. Foodborne doping and supervision in sports. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Jagim AR, Harty PS, Erickson JL, Tinsley GM, Garner D, Galpin AJ. Prevalence of adulteration in dietary supplements and recommendations for safe supplement practices in sport. Front Sports Act Living 2023; 5:1239121. [PMID: 37841887 PMCID: PMC10570429 DOI: 10.3389/fspor.2023.1239121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/15/2023] [Indexed: 10/17/2023] Open
Abstract
The prevalence of dietary supplement use among athletes continues to rise with 60-80% of athletes often reporting current or previous use of dietary supplements. While select dietary ingredients have been shown to improve acute performance and enhance training adaptations over time, it is important to still consider the risk vs. reward for athletes before opting to consume a dietary supplement. Previous work has indicated that certain dietary supplements may pose risks for inadvertent doping, may be susceptible to mislabelling, could be banned by certain governing bodies of sport, or pose health risks for certain populations. The purpose of the current narrative review is to summarize the prevalence of adulteration in dietary sport supplement products, outline the risks of inadvertent doping for athletes, and highlight best practices regarding safe supplementation strategies. Analytical studies have found anywhere from 14 to 50% of samples analyzed from dietary supplement products have tested positive for anabolic agents or other prohibited substances. It is important for the consumer to adhere to safe supplementation strategies, which include following serving size recommendations, cross-referencing ingredient profiles with the list of prohibited substances, choosing quality products that have been verified by a third-party certification program, and being cognizant of consuming multiple dietary supplement products with overlapping ingredient profiles. Once these practices have been considered, it is reasonable for an athlete to utilize dietary supplements as a strategy to optimize performance and health, with a low risk of failing a drug test (adverse analytical finding) and experiencing adverse events.
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Affiliation(s)
- Andrew R. Jagim
- Sports Medicine, Mayo Clinic Health System, La Crosse, WI, United States
| | - Patrick S. Harty
- Exercise & Performance Nutrition Laboratory, Lindenwood University, St. Charles, MO, United States
| | - Jacob L. Erickson
- Sports Medicine, Mayo Clinic Health System, La Crosse, WI, United States
| | - Grant M. Tinsley
- Energy Balance & Body Composition Laboratory, Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, United States
| | - Dan Garner
- BioMolecular Athlete, LLC., Wilmington, DE, United States
| | - Andrew J. Galpin
- BioMolecular Athlete, LLC., Wilmington, DE, United States
- Department of Kinesiology, Center for Sport Performance, California State University, Fullerton, CA, United States
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Zhang J, Lu J, Zhang Y, Wang Y. A LC-MS/MS method for determination of clenbuterol enantiomers in animal tissues and its application to the enantioselective distribution in Bama mini-pigs. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1226:123790. [PMID: 37329777 DOI: 10.1016/j.jchromb.2023.123790] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/05/2023] [Accepted: 06/08/2023] [Indexed: 06/19/2023]
Abstract
OBJECTIVES To establish and validate a simple and reliable analytical method for separation and determination of clenbuterol enantiomers (R-(-)-clenbuterol & S-(+)-clenbuterol) in animal tissues, and apply it to the enantioselective distribution of clenbuterol in Bama mini-pigs. METHODS A LC-MS/MS analytical method was developed and validated in positive multiple reaction monitoring mode with electrospray ionization. After perchloric acid deproteinization, samples were pretreated only by one step liquid-liquid extraction using tert-butyl methyl ether under strong alkaline condition. Teicoplanin was used as chiral selector and 10 mM ammonium formate methanol solution was used as mobile phase. The optimized chromatographic separation conditions were completed in 8 min. Two chiral isomers in 11 edible tissues from Bama mini-pigs were investigated. RESULTS R-(-)-clenbuterol and S-(+)-clenbuterol can be baseline separated and accurately analyzed with a linear range of 5-500 ng/g. Accuracies ranged from -11.9-13.0% for R-(-)-clenbuterol and -10.2-13.2% for S-(+)-clenbuterol, intra-day and inter-day precisions were between 0.7 and 6.1% for R-(-)-clenbuterol and 1.6-5.9% for S-(+)-clenbuterol. R/S ratios in edible tissues of pigs were all significantly lower than 1. CONCLUSIONS The analytical method has good specificity and robustness in determination of R-(-)-clenbuterol and S-(+)-clenbuterol in animal tissues, and can be used as a routine analysis method for food safety and doping control. There is a significant difference in R/S ratio between pig feeding tissues and pharmaceutical preparations (racemate with R/S ratio of 1), which makes it possible to identify the source of clenbuterol in doping control and investigation.
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Affiliation(s)
- Jianli Zhang
- China Institute of Sport Science, No.11 Stadium Road, Dongcheng District, Beijing 100061, China.
| | - Jianghai Lu
- China Anti-Doping Agency, 1st Anding Road, Chaoyang District, Beijing 100029, China
| | - Yinong Zhang
- China Anti-Doping Agency, 1st Anding Road, Chaoyang District, Beijing 100029, China
| | - Yan Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 1st Xiannongtan Street, Xicheng District, Beijing 100050, China
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Yasuda J, Myoenzono K, Takai E, Toguchi M, Tsunezumi S, Kondo C, Kaizaki A, Ode S, Ohno H, Namma-Motonaga K, Kamei A. Importance of "meal first" strategy and effective situations of supplement use in elite athletes: Japan high performance sport center position stand. Front Sports Act Living 2023; 5:1188224. [PMID: 37383062 PMCID: PMC10293618 DOI: 10.3389/fspor.2023.1188224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 05/31/2023] [Indexed: 06/30/2023] Open
Abstract
The "meal first" strategy is traditionally recommended for athletes' conditioning. However, the importance of the "meal first" principle has not been detailly well documented in athletes' lives. Supplement use has recently become a common part of athletes' diets, but unmonitored supplement use can cause negative consequences, such as anti-doping violations and health issues. Therefore, this review summarizes how the "meal first" strategy and planned supplement use are important for enhancing athletes' health and performance. We believe that the "meal first" strategy is beneficial in terms of the following aspects: (1) consumption of multi-nutrients and other functional components simultaneously; (2) positive effects on psychological well-being; (3) contribution to athletes' health by way of mastication; and (4) less risk for anti-doping violations. Before supplement use, we recommend that athletes first verify their basic factors (e.g., diet, training, and sleep), given that the benefits of supplements are examined and demonstrated with the control of those factors. Otherwise, athletes cannot obtain maximal benefits from the supplements. In contrast, there are situations in which supplements in athletes' lives can be advantageous, such as (1) nutrient deficiency due to ongoing dietary characteristics; (2) interruption of meals due to disease; (3) inaccessibility of quality food during athletic travel; (4) difficulty preparing food due to societal restrictions associated with disasters or infection outbreaks; (5) having a meal before, during, or after exercise is difficult; and (6) achieving targeted intake of performance-enhancing ingredients is not practical. In summary, we emphasize that the "meal first" strategy is recommended for athletes' conditioning, but there are several contexts when supplement use can be more useful in athletes' lives.
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Affiliation(s)
- Jun Yasuda
- Correspondence: Jun Yasuda Keiko Namma-Motonaga Akiko Kamei
| | | | | | | | | | | | | | | | | | | | - Akiko Kamei
- Correspondence: Jun Yasuda Keiko Namma-Motonaga Akiko Kamei
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Pelly FE, Tweedie J, O'Connor H. Food Provision at the Olympic Games in the New Millennium: A Meta-narrative Review. SPORTS MEDICINE - OPEN 2023; 9:24. [PMID: 37084149 PMCID: PMC10120499 DOI: 10.1186/s40798-023-00567-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 03/19/2023] [Indexed: 04/22/2023]
Abstract
BACKGROUND AND OBJECTIVE The objective of this meta-narrative review was to identify, organise and map the literature on food provision and nutrition support at the summer and winter Olympic and Paralympic Games (OPG) and similar major competition events over the past 21 years. This builds on a comprehensive update of a previous historical review of the evolution of food provision at the summer Olympic Games up until 2000 and considers contemporary issues such as the global pandemic and sustainability goals. METHODS A range of sources included primary research and review articles, edited book chapters, theses, conference papers or abstracts, International Olympic Committee reports, Organising Committees' food vision and post-Games reports, independent professional reports, and media and periodicals including magazines and trade journals. The search strategy included four steps: a database search that complied with Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews criteria, a search of the Olympic Studies Centre, a review of reference lists for unpublished sources, and a Google search for additional media reports. The researchers followed an iterative process where emerging narratives were discussed, recorded and refined as data were extracted. RESULTS The data from 229 records were extracted into a spreadsheet and grouped according to the type of evidence and specific event, then presented chronologically to give a perspective on the development of food provision and nutrition support. Eleven narratives emerged from the data extraction: 'description of meals, menus and food', 'vision of the food provision', 'food safety', 'catering company involvement', 'sponsorship or contracts with food companies', 'athlete perspective', 'stakeholder perspective', 'athlete food intake,' 'nutrition input in food provision', 'food environment' and 'sustainability'. CONCLUSION Results suggest that athletes' dining expectations, organising committee budgets, expert input and current global trends have led to food delivery changes. The OPG food environment has the capacity to positively influence the dietary choices of athletes and teams, while evolving to meet contemporary global challenges such as COVID-19 and sustainability targets.
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Affiliation(s)
- Fiona E Pelly
- School of Health, University of the Sunshine Coast, Sippy Downs, QLD, Australia.
| | - Judith Tweedie
- School of Health, University of the Sunshine Coast, Sippy Downs, QLD, Australia
| | - Helen O'Connor
- Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Camperdown, Australia
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Processes in Doping System: Quantification Reports in Mixed Martial Arts Fighters. Processes (Basel) 2022. [DOI: 10.3390/pr10122734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Mixed martial arts (MMA) has always been surrounded by controversy due to the unusual muscle development of its participants, so it is crucial to know the strategies that have been implemented to reduce doping cases. The main purpose of this paper is to describe the various cases of doping detected by USADA in UFC MMA participants. In addition, strategies that are being developed to reduce cases of positive doping are proposed. From the UFC USADA database, doping cases were extracted, obtaining the substance or substances involved; the formula, physiological effect and the athletes involved; the dates of the sampling; if it was out of competition or in-competition and the sanction time. The substances that were most involved were found to be Ostarine (22), Clomiphene (9), Diuretics (10) and Stanozolol (9). Some sanctions were diminished because they were treated with contamination of supplements (cases of Ostarine) and cases of contamination of meat (Clomiphene). When contaminated supplements were reported, they were added to the list of high-risk supplements maintained as part of USADA’s online dietary supplement safety education and awareness resource—Supplement 411. There were also cases in which positive doping could be avoided through the early report of therapeutic use exemptions. The methodology that the USADA has implemented allows us to register the athletes with positive doping, check the risk of the supplements before being bought and provide a teaching portal. These efforts are necessary to implement in all countries in which MMA is practiced, avoiding the participation of doped martial artists.
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Simple and Sensitive Analysis of Clenbuterol in Urine Matrices by UHPLC-MS/MS Method with Online-SPE Sample Preparation. SEPARATIONS 2022. [DOI: 10.3390/separations9120440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Clenbuterol is one of the most misused anabolic agents in professional sports. Therefore, the monitoring of clenbuterol in body fluids such as human urine is related to the development of rapid, selective and sensitive analytical methods that produce reliable results. In this work, these requirements were met by a two-dimensional separation method based on online solid-phase extraction coupled with ultra-high performance liquid chromatography–tandem mass spectrometry (SPE–UHPLC–MS/MS). The developed method provides favorable performance parameters, and it is characterized by minimum manual steps (only dilution and the addition of an internal standard) in the sample preparation. A limit of quantification (LOQ) of 0.1 ng/mL, excellent linearity (0.9999), remarkable precision (1.26% to 8.99%) and high accuracy (93.1% to 98.7%) were achieved. From a practical point of view, the analytical performance of the validated SPE–UHPLC–MS/MS method was demonstrated on blinded spiked urine samples from ten healthy volunteers. The estimated concentrations of clenbuterol were in accordance with their corresponding nominal values, as supported by the precision and accuracy data (relative standard deviation ≤5.4%, relative error ≤11%). The fulfillment of the World Anti-Doping Agency’s screening and confirmation criteria indicates that the proposed method is suitable for implementation in routine use in toxicologic and antidoping laboratories. Due to its high orthogonality and separation efficiency, the SPE–UHPLC–MS/MS method should also be easily adapted to the separation of structurally related compounds (such as clenbuterol metabolites). Thus, future antidoping applications could also include monitoring of clenbuterol metabolites, providing a longer detection widow.
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Euler L, Wagener F, Thomas A, Thevis M. Determination and enantioselective separation of zilpaterol in human urine after mimicking consumption of contaminated meat using high-performance liquid chromatography with tandem mass spectrometry techniques. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9357. [PMID: 35851724 DOI: 10.1002/rcm.9357] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
RATIONALE The synthetic β-adrenoreceptor agonist zilpaterol is legitimately used as an animal feed supplement in selected countries due to its known effects on lipolysis and protein biosynthesis. These pharmacological characteristics of zilpaterol have contributed to its classification as doping agent in sport by the World Anti-Doping Agency. However, the use as a feed supplement can lead to residues of the drug in edible tissues and, possibly, also in the urine of consumers. METHODS To provide urinary elimination profiles of microdosed zilpaterol and to determine whether the ingestion of zilpaterol below or at the acceptable daily intake level of 0.04 μg/kg bodyweight can result in an adverse analytical finding (AAF) in doping controls, healthy volunteers were administered single or multiple oral doses of 0.5 μg or 3 μg zilpaterol to mimic ingestion of contaminated cattle meat. Urine samples were collected and analyzed using a validated high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (HPLC-ESI-MS/MS) method and a newly developed chiral high-performance liquid chromatography-atmospheric pressure chemical ionization-tandem mass spectrometry (HPLC-APCI-MS/MS) method. RESULTS Urinary peak concentrations of zilpaterol were observed for all volunteers 1.5-12.5 h after ingestion, and maximum levels >5 ng/mL, which would constitute an AAF in doping controls, were found after the intake of 3 μg of zilpaterol on five consecutive days in one out of five study participants. Noteworthy, the enantiomeric ratio of excreted zilpaterol remained constant over time. CONCLUSION This study provides first insights into the urinary excretion of microdosed zilpaterol. Furthermore, a method was successfully developed and applied for the separation of the zilpaterol enantiomers with mass spectrometric detection.
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Affiliation(s)
- Luisa Euler
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | - Felicitas Wagener
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | - Andreas Thomas
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry/Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne, Germany
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10
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Thomas A, Thevis M. Stereoisomers in sports drug testing: Analytical strategies and applications. J Chromatogr A 2022; 1674:463154. [DOI: 10.1016/j.chroma.2022.463154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/12/2022] [Accepted: 05/16/2022] [Indexed: 10/18/2022]
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Euler L, Gillard N, Delahaut P, Pierret G, Mürdter T, Schwab M, Döhmen G, Thomas A, Thevis M. Assessing human urinary clomiphene metabolites after consumption of eggs from clomiphene-treated laying hens using chromatographic-mass spectrometric approaches. Anal Chim Acta 2022; 1202:339661. [DOI: 10.1016/j.aca.2022.339661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/21/2022] [Accepted: 02/25/2022] [Indexed: 11/01/2022]
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12
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“Food First but Not Always Food Only”: Recommendations for Using Dietary Supplements in Sport. Int J Sport Nutr Exerc Metab 2022; 32:371-386. [DOI: 10.1123/ijsnem.2021-0335] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/31/2022] [Accepted: 01/31/2022] [Indexed: 11/18/2022]
Abstract
The term “food first” has been widely accepted as the preferred strategy within sport nutrition, although there is no agreed definition of this and often limited consideration of the implications. We propose that food first should mean “where practically possible, nutrient provision should come from whole foods and drinks rather than from isolated food components or dietary supplements.” There are many reasons to commend a food first strategy, including the risk of supplement contamination resulting in anti-doping violations. However, a few supplements can enhance health and/or performance, and therefore a food only approach could be inappropriate. We propose six reasons why a food only approach may not always be optimal for athletes: (a) some nutrients are difficult to obtain in sufficient quantities in the diet, or may require excessive energy intake and/or consumption of other nutrients; (b) some nutrients are abundant only in foods athletes do not eat/like; (c) the nutrient content of some foods with established ergogenic benefits is highly variable; (d) concentrated doses of some nutrients are required to correct deficiencies and/or promote immune tolerance; (e) some foods may be difficult to consume immediately before, during or immediately after exercise; and (f) tested supplements could help where there are concerns about food hygiene or contamination. In these situations, it is acceptable for the athlete to consider sports supplements providing that a comprehensive risk minimization strategy is implemented. As a consequence, it is important to stress that the correct terminology should be “food first but not always food only.”
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Thevis M, Kuuranne T, Fedoruk M, Geyer H. Sports drug testing and the athletes' exposome. Drug Test Anal 2021; 13:1814-1821. [PMID: 34694748 DOI: 10.1002/dta.3187] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 10/18/2021] [Accepted: 10/18/2021] [Indexed: 12/13/2022]
Abstract
Similar to the general population, elite athletes are exposed to a complex set of environmental factors including chemicals and radiation and also biological and physical stressors, which constitute an exposome that is, unlike for the general population, subjected to specific scrutiny for athletes due to applicable antidoping regulations and associated (frequent) routine doping controls. Hence, investigations into the athlete's exposome and how to distinguish between deliberate drug use and different contamination scenarios has become a central topic of antidoping research, as a delicate balance is to be managed between the vital and continually evolving developments of sensitive analytical techniques on the one hand, and the risk of the athletes' exposome potentially causing adverse analytical findings on the other.
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Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research - Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Genève and Lausanne, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Epalinges, Switzerland
| | - Matthew Fedoruk
- United States Anti-Doping Agency (USADA), Colorado Springs, Colorado, USA
| | - Hans Geyer
- Center for Preventive Doping Research - Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
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Seyerlein L, Gillard N, Delahaut P, Pierret G, Thomas A, Thevis M. Depletion of clomiphene residues in eggs and muscle after oral administration to laying hens. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 38:1875-1882. [PMID: 34266369 DOI: 10.1080/19440049.2021.1949497] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The selective oestrogen receptor modulator (SERM) clomiphene is therapeutically used to induce ovulation. While prohibited as a doping agent in sports, it is frequently detected in sports drug testing urine samples. Few reports exist on clomiphene's (illicit) use in the farming industry to increase the egg production rate of laying hens, which creates a risk that eggs as well as edible tissue of these hens contain residues of clomiphene. To investigate the potential transfer of clomiphene into eggs and muscle tissue, laying hens were orally administered with clomiphene citrate at 10 mg/day for 28 days. To determine clomiphene residues in eggs, chicken breast and chicken thigh, the target analyte was extracted from homogenised material with acetonitrile and subjected to ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) analysis. The test method reached a limit of quantification (LOQ) of 1 µg/kg and was characterised concerning specificity, precision, trueness and linearity. Analyses were performed on whole egg, egg white and yolk separately, and chicken muscle from breast and thigh. Clomiphene was detectable in eggs two days after the beginning of the drug administration period. The drug concentrations increased to 10-20 µg per egg within one week, and after withdrawal of clomiphene, residues decreased after 4 days, but traces of clomiphene were still detectable until the end of the study (14 days after the last administration). In the chicken's muscle tissue, clomiphene levels up to 150 µg/kg (thigh) and 36 µg/kg (breast) were found. Six days after the last dose, tissue clomiphene concentrations fell below the LOQ. Overall, these results underline the concerns that clomiphene may be transferred into animal-derived food and future research will therefore need to focus on assessing and minimising the risk of unintentional adverse analytical findings in doping controls.
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Affiliation(s)
- Luisa Seyerlein
- Institute of Biochemistry, Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | | | | | | | - Andreas Thomas
- Institute of Biochemistry, Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry, Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany.,European Monitoring Center for Emerging Doping Agents (EuMoCEDA), Cologne/Bonn, Germany
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15
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Balykova LA, Makarov LM, Ivyanskiy SA, Varlashina KA. [Cardiovascular Risks Associated with the use of Performance-Enhancing Stimulants]. ACTA ACUST UNITED AC 2021; 61:105-112. [PMID: 34311694 DOI: 10.18087/cardio.2021.6.n1018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 02/17/2020] [Indexed: 11/18/2022]
Abstract
The number of people involved in regular exercise and sports is increasing. Not infrequently, this is associated with intake of sports biologically active food supplements (BAS) and stimulators of physical ability. Data has been reported on the frequency of use of physical ability stimulators among professional athletes and on the use of the most popular food supplements among young people. Special attention is paid to the effect of such use on the cardiovascular system of athletes. This review describes negative cardiac effects and clinical cases of death of athletes due to the use of such supplements and stimulators.
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Affiliation(s)
- L A Balykova
- National Research Ogarev Mordovia State University, Saransk
| | - L M Makarov
- Center for Syncope and Cardiac Arrhythmia in Children and Adolescents of FMBA of Russia, Moscow
| | - S A Ivyanskiy
- National Research Ogarev Mordovia State University, Saransk
| | - K A Varlashina
- National Research Ogarev Mordovia State University, Saransk
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16
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Thevis M, Kuuranne T, Thomas A, Geyer H. Do dried blood spots have the potential to support result management processes in routine sports drug testing?-Part 2: Proactive sampling for follow-up investigations concerning atypical or adverse analytical findings. Drug Test Anal 2021; 13:505-509. [PMID: 33538088 DOI: 10.1002/dta.3011] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 02/02/2021] [Indexed: 12/20/2022]
Abstract
Capillary blood sampled as dried blood spot (DBS) has shown substantial potential as test matrix in sports drug testing in various different settings, enabling the analysis of numerous different drugs and/or their respective metabolites. In addition to established beneficial aspects of DBS specimens in general (such as the minimally invasive and non-intrusive nature, and simplified sample transport), a yet unexplored advantage of DBS in the anti-doping context could be the opportunity of preserving a source of information complementary to routine doping controls performed in urine or venous blood. Whenever follow-up investigations are warranted or required, frequently collected and stored (but yet not analyzed) DBS samples could be target-tested for the compound(s) in question, in order to contribute to results management and decision-making processes.
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Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, 50933, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
| | - Tiia Kuuranne
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Genève and Lausanne, Lausanne University Hospital, University of Lausanne, Epalinges, Switzerland
| | - Andreas Thomas
- Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, 50933, Germany
| | - Hans Geyer
- Center for Preventive Doping Research, Institute of Biochemistry, German Sport University Cologne, Cologne, 50933, Germany.,European Monitoring Center for Emerging Doping Agents, Cologne, Germany
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17
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Protti M, Sberna PM, Sardella R, Vovk T, Mercolini L, Mandrioli R. VAMS and StAGE as innovative tools for the enantioselective determination of clenbuterol in urine by LC-MS/MS. J Pharm Biomed Anal 2021; 195:113873. [PMID: 33422835 DOI: 10.1016/j.jpba.2020.113873] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/23/2020] [Accepted: 12/24/2020] [Indexed: 10/22/2022]
Abstract
Clenbuterol is a chiral, selective β2-adrenergic agonist. It is administered as a racemic mixture for therapeutic purposes (as a bronchodilator or prospective neuroprotective agent), but also for non-therapeutic uses (athletic performance enhancement, cattle growth promotion). Aim of the present study is to develop an original, enantioselective workflow for the analysis of clenbuterol enantiomers in urine microsamples. An innovative miniaturised sampling procedure by volumetric absorptive microsampling (VAMS) and a microsample pretreatment strategy based on stop-and-go extraction (StAGE) tips were developed and coupled to an original, chiral analytical method, exploiting liquid chromatography with triple quadrupole detection (LC-MS/MS). The method was validated, with satisfactory results: good linearity (r2 ≥ 0.9995) and LOQ values (0.3 ng/mL) were found over suitable concentration ranges. Extraction yield (>87 %), precision (RSD < 4.3 %) and matrix effect (85-90 %) were all within acceptable levels of confidence. After validation, the method was applied to the determination of clenbuterol in dried urine sampled by VAMS from patients taking the drug for therapeutic reasons. Analyte content ranged from 0.8 to 2.5 ng/mL per single enantiomer, with substantial retention of the original drug racemic composition. The VAMS-StAGE-LC-MS/MS workflow seems to be suitable for future application to anti-doping testing of clenbuterol in urine.
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Affiliation(s)
- Michele Protti
- Research group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy
| | - Paolo M Sberna
- Department of Microelectronics, Delft University of Technology, Feldmannweg 17, 2628 CT Delft, the Netherlands
| | - Roccaldo Sardella
- Department of Pharmaceutical Sciences, University of Perugia, Via Fabretti 48, 06123 Perugia, Italy
| | - Tomaž Vovk
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Laura Mercolini
- Research group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.
| | - Roberto Mandrioli
- Department for Life Quality Studies (QuVi), Alma Mater Studiorum - University of Bologna, Corso d'Augusto 237, 47921 Rimini, Italy
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18
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Collins J, Maughan RJ, Gleeson M, Bilsborough J, Jeukendrup A, Morton JP, Phillips SM, Armstrong L, Burke LM, Close GL, Duffield R, Larson-Meyer E, Louis J, Medina D, Meyer F, Rollo I, Sundgot-Borgen J, Wall BT, Boullosa B, Dupont G, Lizarraga A, Res P, Bizzini M, Castagna C, Cowie CM, D'Hooghe M, Geyer H, Meyer T, Papadimitriou N, Vouillamoz M, McCall A. UEFA expert group statement on nutrition in elite football. Current evidence to inform practical recommendations and guide future research. Br J Sports Med 2020; 55:416. [PMID: 33097528 DOI: 10.1136/bjsports-2019-101961] [Citation(s) in RCA: 105] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2020] [Indexed: 01/09/2023]
Abstract
Football is a global game which is constantly evolving, showing substantial increases in physical and technical demands. Nutrition plays a valuable integrated role in optimising performance of elite players during training and match-play, and maintaining their overall health throughout the season. An evidence-based approach to nutrition emphasising, a 'food first' philosophy (ie, food over supplements), is fundamental to ensure effective player support. This requires relevant scientific evidence to be applied according to the constraints of what is practical and feasible in the football setting. The science underpinning sports nutrition is evolving fast, and practitioners must be alert to new developments. In response to these developments, the Union of European Football Associations (UEFA) has gathered experts in applied sports nutrition research as well as practitioners working with elite football clubs and national associations/federations to issue an expert statement on a range of topics relevant to elite football nutrition: (1) match day nutrition, (2) training day nutrition, (3) body composition, (4) stressful environments and travel, (5) cultural diversity and dietary considerations, (6) dietary supplements, (7) rehabilitation, (8) referees and (9) junior high-level players. The expert group provide a narrative synthesis of the scientific background relating to these topics based on their knowledge and experience of the scientific research literature, as well as practical experience of applying knowledge within an elite sports setting. Our intention is to provide readers with content to help drive their own practical recommendations. In addition, to provide guidance to applied researchers where to focus future efforts.
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Affiliation(s)
- James Collins
- Intra Performance Group, London, UK.,Performance and Research Team, Arsenal Football Club, London, UK
| | | | - Michael Gleeson
- School of Sports Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Johann Bilsborough
- Faculty of Health, University of Technology, Sydney, New South Wales, Australia.,New England Patriots, Foxboro, MA, USA
| | - Asker Jeukendrup
- School of Sports Exercise and Health Sciences, Loughborough University, Loughborough, UK.,MySport Science, Birmingham, UK
| | - James P Morton
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - S M Phillips
- Kinesiology, McMaster University, Hamilton, Ontario, Canada
| | - Lawrence Armstrong
- Human Performance Laboratory, University of Connecticut, Storrs, CT, USA
| | - Louise M Burke
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, VIC, Australia
| | - Graeme L Close
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - Rob Duffield
- Faculty of Health, University of Technology, Sydney, New South Wales, Australia.,Medical Department, Football Federation Australia, Sydney, New South Wales, Australia
| | - Enette Larson-Meyer
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA, USA
| | - Julien Louis
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - Daniel Medina
- Athlete Care and Performance, Monumental Sports & Entertainment, Washington, DC, USA
| | - Flavia Meyer
- Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Ian Rollo
- School of Sports Exercise and Health Sciences, Loughborough University, Loughborough, UK.,PepsiCo Life Sciences, Global R&D, Gatorade Sports Science Institute, Birmingham, UK
| | | | - Benjamin T Wall
- Department of Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | | | - Gregory Dupont
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | | | - Peter Res
- Dutch Olympic Team, Amsterdam, Netherlands
| | - Mario Bizzini
- Research and Human Performance Lab, Schulthess Clinic, Zurich, Switzerland
| | - Carlo Castagna
- University of Rome Tor Vergata, Rome, Italy.,Technical Department, Italian Football Federation (FIGC), Florence, Italy.,Italian Football Referees Association, Bologna, Italy
| | - Charlotte M Cowie
- Technical Directorate, Football Association, Burton upon Trent, UK.,Medical Committee, UEFA, Nyon, Switzerland
| | - Michel D'Hooghe
- Medical Committee, UEFA, Nyon, Switzerland.,Medical Centre of Excelence, Schulthess Clinic, Zurich, Switzerland
| | - Hans Geyer
- Center for Preventive Doping Research, German Sport University Cologne, Cologne, Germany
| | - Tim Meyer
- Medical Committee, UEFA, Nyon, Switzerland.,Institute of Sports and Preventive Medicine, Saarland University, Saarbrücken, Germany
| | | | | | - Alan McCall
- Performance and Research Team, Arsenal Football Club, London, UK .,Medical Department, Football Federation Australia, Sydney, New South Wales, Australia.,Sport, Exercise and Health Sciences, School of Applied Sciences, Edinburgh Napier University, Edinburgh, UK
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19
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Dietary Supplement and Food Contaminations and Their Implications for Doping Controls. Foods 2020; 9:foods9081012. [PMID: 32727139 PMCID: PMC7466328 DOI: 10.3390/foods9081012] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 12/16/2022] Open
Abstract
A narrative review with an overall aim of indicating the current state of knowledge and the relevance concerning food and supplement contamination and/or adulteration with doping agents and the respective implications for sports drug testing is presented. The identification of a doping agent (or its metabolite) in sports drug testing samples constitutes a violation of the anti-doping rules defined by the World Anti-Doping Agency. Reasons for such Adverse Analytical Findings (AAFs) include the intentional misuse of performance-enhancing/banned drugs; however, also the scenario of inadvertent administrations of doping agents was proven in the past, caused by, amongst others, the ingestion of contaminated dietary supplements, drugs, or food. Even though controversial positions concerning the effectiveness of dietary supplements in healthy subjects exist, they are frequently used by athletes, anticipating positive effects on health, recovery, and performance. However, most supplement users are unaware of the fact that the administration of such products can be associated with unforeseeable health risks and AAFs in sports. In particular anabolic androgenic steroids (AAS) and stimulants have been frequently found as undeclared ingredients of dietary supplements, either as a result of cross-contaminations due to substandard manufacturing practices and missing quality controls or an intentional admixture to increase the effectiveness of the preparations. Cross-contaminations were also found to affect therapeutic drug preparations. While the sensitivity of assays employed to test pharmaceuticals for impurities is in accordance with good manufacturing practice guidelines allowing to exclude any physiological effects, minute trace amounts of contaminating compounds can still result in positive doping tests. In addition, food was found to be a potential source of unintentional doping, the most prominent example being meat tainted with the anabolic agent clenbuterol. The athletes’ compliance with anti-doping rules is frequently tested by routine doping controls. Different measures including offers of topical information and education of the athletes as well as the maintenance of databases summarizing low- or high-risk supplements are important cornerstones in preventing unintentional anti-doping rule violations. Further, the collection of additional analytical data has been shown to allow for supporting result management processes.
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20
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Solheim SA, Jessen S, Mørkeberg J, Thevis M, Dehnes Y, Eibye K, Hostrup M, Nordsborg NB. Single‐dose administration of clenbuterol is detectable in dried blood spots. Drug Test Anal 2020; 12:1366-1372. [DOI: 10.1002/dta.2872] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/08/2020] [Accepted: 06/01/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Sara Amalie Solheim
- Department of Nutrition, Exercise and Sports University of Copenhagen Copenhagen Denmark
- Department of Sport Anti Doping Denmark Brøndby Denmark
| | - Søren Jessen
- Department of Nutrition, Exercise and Sports University of Copenhagen Copenhagen Denmark
| | | | - Mario Thevis
- Institute of Biochemistry / Center for Preventive Doping Research German Sport University Cologne Cologne Germany
| | - Yvette Dehnes
- Norwegian Doping Control Laboratory, Department of Pharmacology Oslo University Hospital Oslo Norway
| | - Kasper Eibye
- Department of Nutrition, Exercise and Sports University of Copenhagen Copenhagen Denmark
| | - Morten Hostrup
- Department of Nutrition, Exercise and Sports University of Copenhagen Copenhagen Denmark
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21
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Enantiomeric analysis of clenbuterol in Chinese people by LC–MS/MS to distinguish doping abuse from meat contamination. Bioanalysis 2020; 12:783-790. [DOI: 10.4155/bio-2020-0003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Aim: Follow-up investigations are often required for clenbuterol-positive cases. A method to distinguish doping abuse from meat contamination was developed. Materials & methods: A total of 26 volunteers were recruited to ingest clenbuterol contaminated-pork and clenbuterol tablets. Results: For 20 volunteers, after ingestion of contaminated-pork, R-(-)/S-(+)-clenbuterol ratio was <1.0, while the value was >1.0 after taking clenbuterol tablets. However, after taking clenbuterol tablets, some ratio points of the other six volunteers were between 0.9 and 1.0. A case of an abnormal cold and fever, which returned to normal after recovery, was also reported firstly. Conclusion: A change in R-(-)/S-(+)-clenbuterol was reported in the Chinese population initially. A ratio of 0.9 was recommended in doping related cases for the Chinese population.
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22
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Hostrup M, Jacobson GA, Jessen S, Lemminger AK. Anabolic and lipolytic actions of beta
2
‐agonists in humans and antidoping challenges. Drug Test Anal 2020; 12:597-609. [DOI: 10.1002/dta.2728] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 10/29/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Morten Hostrup
- Department of Nutrition, Exercise and Sports, Section of Integrative PhysiologyUniversity of Copenhagen Copenhagen Denmark
| | - Glenn A. Jacobson
- School of Pharmacy and Pharmacology, College of Health and MedicineUniversity of Tasmania Hobart Australia
| | - Søren Jessen
- Department of Nutrition, Exercise and Sports, Section of Integrative PhysiologyUniversity of Copenhagen Copenhagen Denmark
| | - Anders Krogh Lemminger
- Department of Nutrition, Exercise and Sports, Section of Integrative PhysiologyUniversity of Copenhagen Copenhagen Denmark
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23
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Zhang X, Wen J, Lian L, Ma X, Wang X, Lou D. Synthesis of 3D magnetic porous carbon derived from a metal–organic framework for the extraction of clenbuterol and ractopamine from mutton samples. Analyst 2020; 145:5011-5018. [DOI: 10.1039/d0an00566e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of MIL-100(Fe)-derived MPC and its application for the MSPE of CLB and RAC.
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Affiliation(s)
- Xinyang Zhang
- Department of Analytical Chemistry
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Jianan Wen
- Department of Analytical Chemistry
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Lili Lian
- Department of Analytical Chemistry
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Xianhong Ma
- Department of Analytical Chemistry
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Xiyue Wang
- Department of Analytical Chemistry
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Dawei Lou
- Department of Analytical Chemistry
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
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24
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Smith DJ, Shelver WL, Chakrabarty S, Hoffman TW. Detection and quantification of residues in sheep exposed to trace levels of dietary zilpaterol HCl. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1289-1301. [DOI: 10.1080/19440049.2019.1627005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- David J. Smith
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, Fargo, ND, USA
| | - Weilin L. Shelver
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, Fargo, ND, USA
| | - Shubhashis Chakrabarty
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, Fargo, ND, USA
- ORISE Post-Doctoral Fellow, Oak Ridge, USA
| | - Travis W. Hoffman
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
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25
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Dolores HM, Villaseñor A, Piña OS, Mercado Márquez C, Bejarano BV, Bonaparte MEG, López-Arellano R. Evaluation of R- (-) and S- (+) Clenbuterol enantiomers during a doping cycle or continuous ingestion of contaminated meat using chiral liquid chromatography by LC-TQ-MS. Drug Test Anal 2019; 11:1238-1247. [PMID: 31069953 DOI: 10.1002/dta.2612] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 04/12/2019] [Accepted: 05/03/2019] [Indexed: 11/07/2022]
Abstract
Clenbuterol is known to improve competition resistance and muscular growth in athletes. Although it is an illegal drug, its use by farmers is widely spread to induce growth of their cattle. Thus, when clenbuterol is found in the urine of an athlete, there is doubt whether it was consumed with doping purposes or if it is due to the consumption of meat from a clenbuterol-fed animal. Previous studies suggest that enantiomeric relationship of clenbuterol may be different according to the intake source. However, the enantiomeric relationship throughout a doping cycle or a continuous intake of contaminated meat has not yet been explored. In this first approximation, our aim was the development and validation of a sensitive and rapid method for the determination of S- (+) and R- (─) clenbuterol enantiomers to be used in a controlled study in rats fed for one week with contaminated meat or simulating a doping cycle. Enantiomers were measured using liquid chromatography coupled to mass spectrometry with a triple quadrupole analyzer (LC-TQ-MS) and were separated on an AGP Chiralpak column. The method was fully validated following the VICH (Veterinary International Conference on Harmonization guidelines) and was linear in the range of 12.5-800 pg/mL with a correlation coefficient of ≥0.98 for each enantiomer, and with a limit of quantitation and detection (LOQ and LOD) of 12.5 pg/mL and 6.5 pg/mL, respectively, for both enantiomers. The application of this method pointed out the shift of the enantiomeric relationship in urine from rats during the first five days of the doping cycle compared to those fed with contaminated meat. This finding can be of substantial importance in further doping studies.
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Affiliation(s)
- Hernández Mariana Dolores
- Laboratory of Pharmaceutical Development Tests, Multidisciplinary Research Unit, Faculty of Higher Education Cuautitlán, National Autonomous University of Mexico, Cuautitlán Izcalli, Mexico state
| | - Alma Villaseñor
- Institute of Applied Molecular Medicine, Faculty of Medicine, San Pablo CEU University, Madrid, Spain
| | - Olmos Sofia Piña
- Laboratory of Cellular Toxicology, Multidisciplinary Research Unit, National Autonomous University of Mexico, Cuautitlán Izcalli, Mexico state
| | - Crisóforo Mercado Márquez
- Multidisciplinary Research Unit, National Autonomous University of Mexico, Cuautitlán Izcalli, Mexico State, Mexico
| | - Benjamín Velasco Bejarano
- Department of Chemical Sciences, Section of Organic Chemistry, National Autonomous University of Mexico, Cuautitlán Izcalli, State of Mexico, Mexico
| | - María Eugenia Gonsebatt Bonaparte
- Genomic Medicine and Environmental Toxicology Research, Biomedical Institute, National Autonomous University of Mexico, University Exterior Circuit, Mexico City, Mexico
| | - Raquel López-Arellano
- Laboratory of Pharmaceutical Development Tests, Multidisciplinary Research Unit, Faculty of Higher Education Cuautitlán, National Autonomous University of Mexico, Cuautitlán Izcalli, Mexico state
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26
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Abstract
Domestic and international travel represents a regular challenge to high-performance track-and-field athletes, particularly when associated with the pressure of competition or the need to support specialized training (e.g., altitude or heat adaptation). Jet lag is a challenge for transmeridian travelers, while fatigue and alterations to gastrointestinal comfort are associated with many types of long-haul travel. Planning food and fluid intake that is appropriate to the travel itinerary may help to reduce problems. Resynchronization of the body clock is achieved principally through manipulation of zeitgebers, such as light exposure; more investigation of the effects of melatonin, caffeine, and the timing/composition of meals will allow clearer guidelines for their contribution to be prepared. At the destination, the athlete, the team management, and catering providers each play a role in achieving eating practices that support optimal performance and success in achieving the goals of the trip. Although the athlete is ultimately responsible for his or her nutrition plan, best practice by all parties will include pretrip consideration of risks around the quality, quantity, availability, and hygiene standards of the local food supply and the organization of strategies to deal with general travel nutrition challenges as well as issues that are specific to the area or the special needs of the group. Management of buffet-style eating, destination-appropriate protocols around food/water and personal hygiene, and arrangement of special food needs including access to appropriate nutritional support between the traditional "3 meals a day" schedule should be part of the checklist.
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27
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Mochamad L, Hermanto B, Restiadi TI. Calculate of withdrawal times of clenbuterol in goats to obtain safe times of slaughter. Vet World 2018; 11:731-738. [PMID: 30034163 PMCID: PMC6048073 DOI: 10.14202/vetworld.2018.731-738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 04/24/2018] [Indexed: 12/01/2022] Open
Abstract
Background and Aim: Clenbuterol as a β2-agonist drug was investigated according to the concentration of the drug available in the bodies of goats and according to the level of sensitivity of the instruments used for detection. The objective of the current study was to determine withdrawal times after giving a therapeutic dose that resulted in safe slaughters. Materials and Methods: Five healthy male goats with a mean body weight of 20.64 kg were treated with a single dose of 5.10−3 mg/kg in the BW onto jugular vein. Whole blood samples of approximately 5 mL were taken in a time series at 5, 30, 60, 90, 150, 210, 270, 390, 510, 630, and 750 min. At 24 h posttreatment, all subjects were sacrificed, and 300 g samples of the liver were obtained. The plasma concentration and liver residue of the drug were observed by reverse-phase high-performance liquid chromatography. Results: The drug reached a maximum concentration of 19.233±0.331 µg/mL at 5 min, and the elimination half-life was at 173.25 min. The limit detection was obtained at 0.053 µg/mL. A one-way analysis of variance between all goats showed that elimination of the clenbuterol in their bodies was similar (p=1.00), with a withdrawal time of 1,479.326 min and no residues in the liver (p<0.05). Conclusion: Safe times for slaughter were determined to be at 2 days, 13 h, and 12 min as the 2nd safety factor (SF) time and 3 days, 1 h, and 58 min as the 3rd SF time with the liver organ free from residue. elimination half-life, new method for calculating withdrawal time, prescriptions for obtained β2-agonist, residues in liver.
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Affiliation(s)
- Lazuardi Mochamad
- Department of Basic Science, Veterinary Pharmacy Subdivision, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Bambang Hermanto
- Department of Pharmacology, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - T I Restiadi
- Department of Reproduction, Faculty of Veterinary Medicine, Airlangga University, Surabaya, Indonesia
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28
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Velasco‐Bejarano B, Bautista J, Noguez MO, Camacho E, Rodríguez ME, Rodríguez L. Resolution of
R‐(−)
and
S‐(+)‐
enantiomers of clenbuterol in pharmaceutical preparations and black‐market products using liquid chromatography–tandem mass spectrometry. Drug Test Anal 2017; 9:1738-1743. [DOI: 10.1002/dta.2294] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/10/2017] [Accepted: 08/23/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Benjamín Velasco‐Bejarano
- Facultad de Estudios Superiores Cuautitlán‐UNAMDepartamento de Ciencias Químicas, Sección de Química Orgánica Av. 1 de mayo S/N, Col. Sta. María las Torres Cuautitlán Izcalli Estado de México México C.P. 54740
- Laboratorio Nacional de Prevención y Control del Dopaje‐CONADEDirección de Medicina y Ciencias Aplicadas Camino a Santa Teresa No. 482, Col. Peña Pobre, Delegación Tlalpan Ciudad de México México C. P. 14060
| | - Jahir Bautista
- Laboratorio Nacional de Prevención y Control del Dopaje‐CONADEDirección de Medicina y Ciencias Aplicadas Camino a Santa Teresa No. 482, Col. Peña Pobre, Delegación Tlalpan Ciudad de México México C. P. 14060
| | - Ma. Olivia Noguez
- Facultad de Estudios Superiores Cuautitlán‐UNAMDepartamento de Ciencias Químicas, Sección de Química Orgánica Av. 1 de mayo S/N, Col. Sta. María las Torres Cuautitlán Izcalli Estado de México México C.P. 54740
| | - Evangelina Camacho
- Laboratorio Nacional de Prevención y Control del Dopaje‐CONADEDirección de Medicina y Ciencias Aplicadas Camino a Santa Teresa No. 482, Col. Peña Pobre, Delegación Tlalpan Ciudad de México México C. P. 14060
| | - Martha E. Rodríguez
- Laboratorio Nacional de Prevención y Control del Dopaje‐CONADEDirección de Medicina y Ciencias Aplicadas Camino a Santa Teresa No. 482, Col. Peña Pobre, Delegación Tlalpan Ciudad de México México C. P. 14060
| | - Leonardo Rodríguez
- Laboratorio Nacional de Prevención y Control del Dopaje‐CONADEDirección de Medicina y Ciencias Aplicadas Camino a Santa Teresa No. 482, Col. Peña Pobre, Delegación Tlalpan Ciudad de México México C. P. 14060
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29
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Tascon M, Gómez-Ríos GA, Reyes-Garcés N, Poole J, Boyacı E, Pawliszyn J. High-Throughput Screening and Quantitation of Target Compounds in Biofluids by Coated Blade Spray-Mass Spectrometry. Anal Chem 2017; 89:8421-8428. [PMID: 28715206 DOI: 10.1021/acs.analchem.7b01877] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Most contemporary methods of screening and quantitating controlled substances and therapeutic drugs in biofluids typically require laborious, time-consuming, and expensive analytical workflows. In recent years, our group has worked toward developing microextraction (μe)-mass spectrometry (MS) technologies that merge all of the tedious steps of the classical methods into a simple, efficient, and low-cost methodology. Unquestionably, the automation of these technologies allows for faster sample throughput, greater reproducibility, and radically reduced analysis times. Coated blade spray (CBS) is a μe technology engineered for extracting/enriching analytes of interest in complex matrices, and it can be directly coupled with MS instruments to achieve efficient screening and quantitative analysis. In this study, we introduced CBS as a technology that can be arranged to perform either rapid diagnostics (single vial) or the high-throughput (96-well plate) analysis of biofluids. Furthermore, we demonstrate that performing 96-CBS extractions at the same time allows the total analysis time to be reduced to less than 55 s per sample. Aiming to validate the versatility of CBS, substances comprising a broad range of molecular weights, moieties, protein binding, and polarities were selected. Thus, the high-throughput (HT)-CBS technology was used for the concomitant quantitation of 18 compounds (mixture of anabolics, β-2 agonists, diuretics, stimulants, narcotics, and β-blockers) spiked in human urine and plasma samples. Excellent precision (∼2.5%), accuracy (≥90%), and linearity (R2 ≥ 0.99) were attained for all the studied compounds, and the limits of quantitation (LOQs) were within the range of 0.1 to 10 ng·mL-1 for plasma and 0.25 to 10 ng·mL-1 for urine. The results reported in this paper confirm CBS's great potential for achieving subsixty-second analyses of target compounds in a broad range of fields such as those related to clinical diagnosis, food, the environment, and forensics.
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Affiliation(s)
- Marcos Tascon
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | | | - Nathaly Reyes-Garcés
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Justen Poole
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Ezel Boyacı
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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Gómez-Ríos GA, Liu C, Tascon M, Reyes-Garcés N, Arnold DW, Covey TR, Pawliszyn J. Open Port Probe Sampling Interface for the Direct Coupling of Biocompatible Solid-Phase Microextraction to Atmospheric Pressure Ionization Mass Spectrometry. Anal Chem 2017; 89:3805-3809. [DOI: 10.1021/acs.analchem.6b04737] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | - Chang Liu
- SCIEX, 71 Four Valley Drive, Concord, Ontario L4K 4 V8, Canada
| | - Marcos Tascon
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Nathaly Reyes-Garcés
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Don W. Arnold
- SCIEX, 1201 Radio Road, Redwood City, California 94065, United States
| | - Thomas R. Covey
- SCIEX, 71 Four Valley Drive, Concord, Ontario L4K 4 V8, Canada
| | - Janusz Pawliszyn
- Department
of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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Parr MK, Blokland MH, Liebetrau F, Schmidt AH, Meijer T, Stanic M, Kwiatkowska D, Waraksa E, Sterk SS. Distinction of clenbuterol intake from drug or contaminated food of animal origin in a controlled administration trial - the potential of enantiomeric separation for doping control analysis. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 34:525-535. [PMID: 27690842 DOI: 10.1080/19440049.2016.1242169] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The differentiation of clenbuterol abuse and unintentional ingestion from contaminated meat is crucial with respect to the valuation of an adverse analytical finding in human sports doping control. The proportion of the two enantiomers of clenbuterol may serve as potential discriminating parameter. For the determination of the individual enantiomers, specific methods were developed and validated for the different matrices under investigation based on chiral chromatography coupled to tandem mass spectrometry. Data are presented from the administration to humans of clenbuterol from a pharmaceutical preparation, and from cattle meat and liver containing residues. A shift in the proportion of the enantiomers in cattle meat is detected and this signature is also found in human urine after ingestion. Thus, an altered enantiomeric composition of clenbuterol may be used to substantiate athletes' claims following adverse analytical findings in doping control. However, in meat, the enantiomeric composition was found to be highly variable. Species as well as tissue dependent variances need to be considered in interpreting enantiomer discrimination. Analysis of post administration urines from a controlled experiment comparing the administration of racemic clenbuterol from a registered pharmaceutical preparation and the administration of residue-containing meat and liver (nonracemic mixture) from treated animals is reported. Furthermore doping control samples from Mexican U17 World Championship 2011 of the Fédération Internationale de Football Association (FIFA), with adverse analytical findings for clenbuterol, were re-analysed.
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Affiliation(s)
- Maria Kristina Parr
- a Institute of Pharmacy, Department of Biology, Chemistry, Pharmacy , Freie Universität Berlin , Berlin , Germany
| | - Marco H Blokland
- b Institute for Food Safety , RIKILT Wageningen UR , Wageningen , Netherlands
| | - Franz Liebetrau
- a Institute of Pharmacy, Department of Biology, Chemistry, Pharmacy , Freie Universität Berlin , Berlin , Germany
| | - Alexander H Schmidt
- a Institute of Pharmacy, Department of Biology, Chemistry, Pharmacy , Freie Universität Berlin , Berlin , Germany.,c Chromicent GmbH , Berlin , Germany
| | - Thijs Meijer
- b Institute for Food Safety , RIKILT Wageningen UR , Wageningen , Netherlands
| | | | - Dorota Kwiatkowska
- d Department of Anti-Doping Research , Institute of Sport - National Research Institute , Warsaw , Poland
| | - Emilia Waraksa
- d Department of Anti-Doping Research , Institute of Sport - National Research Institute , Warsaw , Poland
| | - Saskia S Sterk
- b Institute for Food Safety , RIKILT Wageningen UR , Wageningen , Netherlands
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32
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Cheng TYD, Shelver WL, Hong CC, McCann SE, Davis W, Zhang Y, Ambrosone CB, Smith DJ. Urinary Excretion of the β-Adrenergic Feed Additives Ractopamine and Zilpaterol in Breast and Lung Cancer Patients. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:7632-7639. [PMID: 27641640 PMCID: PMC5510757 DOI: 10.1021/acs.jafc.6b02723] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
β2-Adrenergic agonists (β-agonists) have been legally used in the U.S. for almost two decades to increase lean muscle mass in meat animals. Despite a cardiotoxic effect after high-dose exposure, there has been limited research on human β-agonist exposures related to meat consumption. We quantified urinary concentrations of ractopamine and zilpaterol, two FDA-approved β-agonist feed additives, and examined the extent to which the concentrations were associated with estimated usual meat intake levels. Overnight urine samples from 324 newly diagnosed breast cancer patients and spot urine samples from 46 lung cancer patients at the time of diagnosis, prior to treatment, were collected during 2006-2010 and 2014-2015, respectively. Urinary ractopamine and zilpaterol concentrations were measured by LC-MS/MS. Ractopamine and zilpaterol, respectively, were detected in 8.1% and 3.0% of the urine samples collected (n = 370). Only 1.1% (n = 4) of the urine samples had zilpaterol concentrations above the limit of quantification, with the mean value of 0.07 ng/mL in urine. The presence of detectable ractopamine and zilpaterol levels were not associated with meat consumption estimated from a food frequency questionnaire, including total meat (P = 0.13 and 0.74, respectively), total red meat (P = 0.72 and 0.74), unprocessed red meat (P = 0.74 and 0.73), processed red meat (P = 0.72 and 0.15), and poultry intake (P = 0.67 for ractopamine). Our data suggest that the amount of meat-related exposure of β-agonists was low.
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Affiliation(s)
- Ting-Yuan David Cheng
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | - Weilin L. Shelver
- USDA-Agricultural Research Service, Biosciences Research Laboratory, Fargo, ND
| | - Chi-Chen Hong
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | - Susan E. McCann
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | - Warren Davis
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | - Yali Zhang
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY
| | | | - David J. Smith
- USDA-Agricultural Research Service, Biosciences Research Laboratory, Fargo, ND
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Thevis M, Geyer H, Tretzel L, Schänzer W. Sports drug testing using complementary matrices: Advantages and limitations. J Pharm Biomed Anal 2016; 130:220-230. [DOI: 10.1016/j.jpba.2016.03.055] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 03/27/2016] [Indexed: 01/14/2023]
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34
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Pawar RS, Grundel E. Overview of regulation of dietary supplements in the USA and issues of adulteration with phenethylamines (PEAs). Drug Test Anal 2016; 9:500-517. [DOI: 10.1002/dta.1980] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 03/25/2016] [Accepted: 03/27/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Rahul S. Pawar
- Office of Regulatory Science; Center for Food Safety Applied Nutrition; College Park MD 20740 USA
| | - Erich Grundel
- Office of Regulatory Science; Center for Food Safety Applied Nutrition; College Park MD 20740 USA
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35
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Applications and challenges in using LC–MS/MS assays for quantitative doping analysis. Bioanalysis 2016; 8:1307-22. [DOI: 10.4155/bio-2016-0030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
LC–MS/MS is useful for qualitative and quantitative analysis of ‘doped’ biological samples from athletes. LC–MS/MS-based assays at low-mass resolution allow fast and sensitive screening and quantification of targeted analytes that are based on preselected diagnostic precursor–product ion pairs. Whereas LC coupled with high-resolution/high-accuracy MS can be used for identification and quantification, both have advantages and challenges for routine analysis. Here, we review the literature regarding various quantification methods for measuring prohibited substances in athletes as they pertain to World Anti-Doping Agency regulations.
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Zhang K, Liang X, Su C, Tang C, Zhao Q, Zhang J, Meng Q. Salbutamol Residues in Plasma, Urine and Hair of Heifers After a Single Dose and Throughout. J Anal Toxicol 2016; 40:454-9. [DOI: 10.1093/jat/bkw036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Baume N, Jan N, Emery C, Mandanis B, Schweizer C, Giraud S, Leuenberger N, Marclay F, Nicoli R, Perrenoud L, Robinson N, Dvorak J, Saugy M. Antidoping programme and biological monitoring before and during the 2014 FIFA World Cup Brazil. Br J Sports Med 2016; 49:614-22. [PMID: 25878079 PMCID: PMC4413745 DOI: 10.1136/bjsports-2015-094762] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background The FIFA has implemented an important antidoping programme for the 2014 FIFA World Cup. Aim To perform the analyses before and during the World Cup with biological monitoring of blood and urine samples. Methods All qualified players from the 32 teams participating in the World Cup were tested out-of-competition. During the World Cup, 2–8 players per match were tested. Over 1000 samples were collected in total and analysed in the WADA accredited Laboratory of Lausanne. Results The quality of the analyses was at the required level as described in the WADA technical documents. The urinary steroid profiles of the players were stable and consistent with previously published papers on football players. During the competition, amphetamine was detected in a sample collected on a player who had a therapeutic use exemption for attention deficit hyperactivity disorder. The blood passport data showed no significant difference in haemoglobin values between out-of-competition and postmatch samples. Conclusions Logistical issues linked to biological samples collection, and the overseas shipment during the World Cup did not impair the quality of the analyses, especially when used as the biological passport of football players.
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Affiliation(s)
- Norbert Baume
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Nicolas Jan
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Caroline Emery
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Béatrice Mandanis
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Carine Schweizer
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Sylvain Giraud
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Nicolas Leuenberger
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - François Marclay
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Raul Nicoli
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Laurent Perrenoud
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Neil Robinson
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
| | - Jiri Dvorak
- FIFA, Zürich, Switzerland FIFA Medical Assessment and Research Centre (F-MARC) and Schulthess Clinic, Zürich, Switzerland
| | - Martial Saugy
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva & Lausanne, Epalinges, Switzerland
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38
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Bird SR, Goebel C, Burke LM, Greaves RF. Doping in sport and exercise: anabolic, ergogenic, health and clinical issues. Ann Clin Biochem 2015; 53:196-221. [DOI: 10.1177/0004563215609952] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2015] [Indexed: 12/11/2022]
Abstract
The use of doping agents is evident within competitive sport in senior and junior age groups, where they are taken by non-elite as well as elite participants. They are also taken in non-sporting contexts by individuals seeking to ‘improve’ their physique through an increase in muscle and/or decrease in fat mass. While attaining accurate data on the prevalence of their use has limitations, studies suggest the illicit use of doping agents by athletes and non-athletes may be 1–5% in the population and greater than 50% in some groups; with the prevalence being higher in males. There is conclusive evidence that some doping agents are anabolic and ergogenic. There is also evidence that the use of doping agents such as anabolic androgenic steroids, growth hormone and other anabolic agents, erythropoietin and stimulants conveys considerable health risks that include, but are not limited to: cardiovascular disease, diabetes, cancer, mental health issues, virilisation in females and the suppression of naturally produced androgens in males. This review will outline the anabolic, ergogenic and health impacts of selected doping agents and methods that may be used in both the sporting and physique development contexts. It also provides a brief tabulated overview of the history of doping and how doping agents may impact upon the analyses of clinical samples.
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Affiliation(s)
- Stephen R Bird
- School of Medical Sciences, RMIT University, Victoria, Australia
| | - Catrin Goebel
- Australian Sports Drug Testing Laboratory, Sydney, Australia
| | | | - Ronda F Greaves
- School of Medical Sciences, RMIT University, Victoria, Australia
- Murdoch Children's Research Institute, Melbourne, Australia
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Krumbholz A, Anielski P, Gfrerer L, Graw M, Geyer H, Schänzer W, Dvorak J, Thieme D. Statistical significance of hair analysis of clenbuterol to discriminate therapeutic use from contamination. Drug Test Anal 2014; 6:1108-16. [DOI: 10.1002/dta.1746] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 09/30/2014] [Accepted: 10/07/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Aniko Krumbholz
- Institute of Doping Analysis and Sports Biochemistry (IDAS) Dresden; Germany
| | - Patricia Anielski
- Institute of Doping Analysis and Sports Biochemistry (IDAS) Dresden; Germany
| | - Lena Gfrerer
- Institute of Legal Medicine of the University of Munich; Germany
| | - Matthias Graw
- Institute of Legal Medicine of the University of Munich; Germany
| | - Hans Geyer
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne (DSHS); Germany
| | - Wilhelm Schänzer
- Institute of Biochemistry/Center for Preventive Doping Research; German Sport University Cologne (DSHS); Germany
| | - Jiri Dvorak
- Fédération Internationale de Football Association (FIFA); Medical Assessment and Research Centre (F-MARC) and Schulthess Clinic; Zurich Switzerland
| | - Detlef Thieme
- Institute of Doping Analysis and Sports Biochemistry (IDAS) Dresden; Germany
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40
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Dvorak J, Baume N, Botré F, Broséus J, Budgett R, Frey WO, Geyer H, Harcourt PR, Ho D, Howman D, Isola V, Lundby C, Marclay F, Peytavin A, Pipe A, Pitsiladis YP, Reichel C, Robinson N, Rodchenkov G, Saugy M, Sayegh S, Segura J, Thevis M, Vernec A, Viret M, Vouillamoz M, Zorzoli M. Time for change: a roadmap to guide the implementation of the World Anti-Doping Code 2015. Br J Sports Med 2014; 48:801-6. [PMID: 24764550 PMCID: PMC4033186 DOI: 10.1136/bjsports-2014-093561] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A medical and scientific multidisciplinary consensus meeting was held from 29 to 30 November 2013 on Anti-Doping in Sport at the Home of FIFA in Zurich, Switzerland, to create a roadmap for the implementation of the 2015 World Anti-Doping Code. The consensus statement and accompanying papers set out the priorities for the antidoping community in research, science and medicine. The participants achieved consensus on a strategy for the implementation of the 2015 World Anti-Doping Code. Key components of this strategy include: (1) sport-specific risk assessment, (2) prevalence measurement, (3) sport-specific test distribution plans, (4) storage and reanalysis, (5) analytical challenges, (6) forensic intelligence, (7) psychological approach to optimise the most deterrent effect, (8) the Athlete Biological Passport (ABP) and confounding factors, (9) data management system (Anti-Doping Administration & Management System (ADAMS), (10) education, (11) research needs and necessary advances, (12) inadvertent doping and (13) management and ethics: biological data. True implementation of the 2015 World Anti-Doping Code will depend largely on the ability to align thinking around these core concepts and strategies. FIFA, jointly with all other engaged International Federations of sports (Ifs), the International Olympic Committee (IOC) and World Anti-Doping Agency (WADA), are ideally placed to lead transformational change with the unwavering support of the wider antidoping community. The outcome of the consensus meeting was the creation of the ad hoc Working Group charged with the responsibility of moving this agenda forward.
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Affiliation(s)
- Jiri Dvorak
- FIFA/F-MARC FIFA-Strasse, , Zurich, Switzerland
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Geyer H, Schänzer W, Thevis M. Anabolic agents: recent strategies for their detection and protection from inadvertent doping. Br J Sports Med 2014; 48:820-6. [PMID: 24632537 PMCID: PMC4033149 DOI: 10.1136/bjsports-2014-093526] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
According to the World Anti-Doping Agency (WADA) Prohibited List, anabolic agents consist of exogenous anabolic androgenic steroids (AAS), endogenous AAS and other anabolic agents such as clenbuterol and selective androgen receptor modulators (SARMs). Currently employed strategies for their improved detection include the prolongation of the detection windows for exogenous AAS, non-targeted and indirect analytical approaches for the detection of modified steroids (designer steroids), the athlete's biological passport and isotope ratio mass spectrometry for the detection of the misuse of endogenous AAS, as well as preventive doping research for the detection of SARMs. The recent use of these strategies led to 4-80-fold increases of adverse analytical findings for exogenous AAS, to the detection of the misuse of new designer steroids, to adverse analytical findings of different endogenous AAS and to the first adverse analytical findings of SARMs. The strategies of the antidoping research are not only focused on the development of methods to catch the cheating athlete but also to protect the clean athlete from inadvertent doping. Within the past few years several sources of inadvertent doping with anabolic agents have been identified. Among these are nutritional supplements adulterated with AAS, meat products contaminated with clenbuterol, mycotoxin (zearalenone) contamination leading to zeranol findings, and natural products containing endogenous AAS. The protection strategy consists of further investigations in case of reasonable suspicion of inadvertent doping, publication of the results, education of athletes and development of methods to differentiate between intentional and unintentional doping.
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Affiliation(s)
- Hans Geyer
- Institute of Biochemistry, Center for Preventive Doping Research, German Sport University Cologne, , Cologne, Germany
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43
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Maughan RJ. Quality assurance issues in the use of dietary supplements, with special reference to protein supplements. J Nutr 2013; 143:1843S-1847S. [PMID: 24027186 DOI: 10.3945/jn.113.176651] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The use of dietary supplements is widespread in the general population, in athletes and recreational exercisers, and in military personnel. A wide array of supplements is available, but protein-containing products are consistently among the most popular, especially among those who engage in resistance training. There are significant risks associated with the use of unregulated dietary supplements. Risks include the absence of active ingredients, the presence of harmful substances (including microbiological agents and foreign objects), the presence of toxic agents, and the presence of potentially dangerous prescription-only pharmaceuticals. There is ample evidence of athletes who have failed doping tests because of the use of dietary supplements. There is also growing evidence of risks to health and of serious adverse events, including a small number of fatalities, as a result of supplement use. The risk associated with the use of protein powders produced by major manufacturers is probably low, and the risk can be further reduced by using only products that have been tested under one of the recognized supplement quality assurance programs that operate in various countries. Nevertheless, a small risk remains, and athletes, soldiers, and other consumers should conduct a cost-benefit analysis before using any dietary supplements.
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Affiliation(s)
- Ronald J Maughan
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
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Thevis M, Geyer L, Geyer H, Guddat S, Dvorak J, Butch A, Sterk SS, Schänzer W. Adverse analytical findings with clenbuterol among U-17 soccer players attributed to food contamination issues. Drug Test Anal 2013; 5:372-6. [PMID: 23559541 DOI: 10.1002/dta.1471] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 02/13/2013] [Accepted: 02/16/2013] [Indexed: 11/09/2022]
Abstract
The illicit use of growth promoters in animal husbandry has frequently been reported in the past. Among the drugs misused to illegally increase the benefit of stock farming, clenbuterol has held a unique position due to the substance's composition, mechanism of action, metabolism, and disposition. Particularly clenbuterol's disposition in animals' edible tissues destined for food production can cause considerable issues on consumption by elite athletes registered in national and international doping control systems as demonstrated in this case-related study. Triggered by five adverse analytical findings with clenbuterol among the Mexican national soccer team in out-of-competition controls in May 2011, the Fédération Internationale de Football Association (FIFA) initiated an inquest into a potential food contamination (and thus sports drug testing) problem in Mexico, the host country of the FIFA U-17 World Cup 2011. Besides 208 regular doping control samples, which were subjected to highly sensitive mass spectrometric test methods for anabolic agents, 47 meat samples were collected in team hotels during the period of the tournament and forwarded to Institute of Food Safety, RIKILT. In 14 out of 47 meat samples (30%), clenbuterol was detected at concentrations between 0.06 and 11 µg/kg. A total of 109 urine samples out of 208 doping control specimens (52%) yielded clenbuterol findings at concentrations ranging from 1-1556 pg/ml, and only 5 out of 24 teams provided urine samples that did not contain clenbuterol. At least one of these teams was on a strict 'no-meat' diet reportedly due to the known issue of clenbuterol contamination in Mexico. Eventually, owing to the extensive evidence indicating meat contamination as the most plausible reason for the extraordinary high prevalence of clenbuterol findings, none of the soccer players were sanctioned. However, elite athletes have to face severe consequences when testing positive for a prohibited anabolic agent and sufficient supporting information corroborating the scenario of inadvertent ingestion are required to be acquitted from anti-doping rule violations. Hence, governmental contribution is urgently needed to combat the illegal use of clenbuterol in stock breading.
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Affiliation(s)
- Mario Thevis
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany.
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Abstract
Though we may still sing today, as did Pindar in his eighth Olympian Victory Ode, "… of no contest greater than Olympia, Mother of Games, gold-wreathed Olympia…", we must sadly admit that today, besides blatant over-commercialization, there is no more ominous threat to the Olympic games than doping. Drug-use methods are steadily becoming more sophisticated and ever harder to detect, increasingly demanding the use of complex analytical procedures of biotechnology and molecular medicine. Special emphasis is thus given to anabolic androgenic steroids, recombinant growth hormone and erythropoietin as well as to gene doping, the newly developed mode of hormones abuse which, for its detection, necessitates high-tech methodology but also multidisciplinary individual measures incorporating educational and psychological methods. In this Olympic year, the present review offers an update on the current technologically advanced endocrine methods of doping while outlining the latest procedures applied-including both the successes and pitfalls of proteomics and metabolomics-to detect doping while contributing to combating this scourge.
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Affiliation(s)
- Leonidas H Duntas
- Endocrine Unit, Evgenidion Hospital, University of Athens, 20 Papadiamantopoulou Street, 11528, Athens, Greece.
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Thevis M, Thomas A, Beuck S, Butch A, Dvorak J, Schänzer W. Does the analysis of the enantiomeric composition of clenbuterol in human urine enable the differentiation of illicit clenbuterol administration from food contamination in sports drug testing? RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:507-512. [PMID: 23322656 DOI: 10.1002/rcm.6485] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 11/30/2012] [Accepted: 12/04/2012] [Indexed: 06/01/2023]
Abstract
RATIONALE Clenbuterol (4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol) is approved for human and veterinary use primarily for the treatment of pulmonary afflictions. Despite the authorized administration in cases of medical indications, the misuse of clenbuterol in animal husbandry as well as elite and amateur sport has frequently been reported, arguably due to growth-promoting properties. Due to various recent incidences of doping control specimens containing clenbuterol, strategies towards the discrimination of a surreptitious application from unintended intake via animal-derived edibles or dietary supplements were required. METHODS The enantiomeric compositions of clenbuterol in human urine samples derived from administration studies with therapeutic amounts of the β(2)-agonist and authentic doping control specimens were determined. Due to the facts that therapeutic clenbuterol consists of a racemic mixture of (+)- and (-)-stereoisomers and that the first mentioned (dextrorotatory) stereoisomer is retained to a greater extent in edible animal tissue, the differentiation of a recent administration of therapeutic (and thus racemic) clenbuterol from food contamination (stereoisomerically depleted clenbuterol) was considered. Employing deuterated clenbuterol as internal standard, the target analytes were extracted from human urine by means of concerted liquid-liquid and solid-phase extractions and subjected to chiral liquid chromatography hyphenated to high resolution/high accuracy mass spectrometry with electrospray ionization. RESULTS Both enantiomers of clenbuterol were baseline separated and relative abundances of corresponding labeled and unlabeled stereoisomers were determined, demonstrating that the therapeutic use of clenbuterol results in racemic mixtures in urine for at least 24 h while adverse analytical findings presumably originating from food contaminations can yield (-)-clenbuterol-depleted pairs of analytes. CONCLUSIONS The determination of relative abundances of clenbuterol enantiomers can indicate the ingestion of clenbuterol via contaminated food; however, depletion of (-)-clenbuterol in edible animal tissue is time-dependent and thus results can still be inconclusive as to the inadvertent ingestion of clenbuterol when clenbuterol administration to animals was conducted until slaughter.
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Affiliation(s)
- Mario Thevis
- Center for Preventive Doping Research - Institute of Biochemistry, German Sport University Cologne, Cologne, Germany.
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Nicoli R, Petrou M, Badoud F, Dvorak J, Saugy M, Baume N. Quantification of clenbuterol at trace level in human urine by ultra-high pressure liquid chromatography-tandem mass spectrometry. J Chromatogr A 2012; 1292:142-50. [PMID: 23294994 DOI: 10.1016/j.chroma.2012.12.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 11/07/2012] [Accepted: 12/06/2012] [Indexed: 11/17/2022]
Abstract
Clenbuterol is a β2 agonist agent with anabolic properties given by the increase in the muscular mass in parallel to the decrease of the body fat. For this reason, the use of clenbuterol is forbidden by the World Anti-Doping Agency (WADA) in the practice of sport. This compound is of particular interest for anti-doping authorities and WADA-accredited laboratories due to the recent reporting of risk of unintentional doping following the eating of meat contaminated with traces of clenbuterol in some countries. In this work, the development and the validation of an ultra-high pressure liquid chromatography coupled to electrospray ionization tandem mass spectrometry (UHPLC-ESI-MS/MS) method for the quantification of clenbuterol in human urine is described. The analyte was extracted from urine samples by liquid-liquid extraction (LLE) in basic conditions using tert butyl-methyl ether (TBME) and analyzed by UHPLC-MS/MS with a linear gradient of acetonitrile in 9min only. The simple and rapid method presented here was validated in compliance with authority guidelines and showed a limit of quantification at 5pg/mL and a linearity range from 5pg/mL to 300pg/mL. Good trueness (85.8-105%), repeatability (5.7-10.6% RSD) and intermediate precision (5.9-14.9% RSD) results were obtained. The method was then applied to real samples from eighteen volunteers collecting urines after single oral doses administration (1, 5 and 10μg) of clenbuterol-enriched yogurts.
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Affiliation(s)
- Raul Nicoli
- Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, West Switzerland, Chemin des Croisettes 22, 1066 Epalinges, Switzerland
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Thevis M, Kuuranne T, Geyer H, Schänzer W. Annual banned-substance review: analytical approaches in human sports drug testing. Drug Test Anal 2012; 5:1-19. [DOI: 10.1002/dta.1441] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 11/02/2012] [Indexed: 12/12/2022]
Affiliation(s)
| | - Tiia Kuuranne
- Doping Control Laboratory, United Medix Laboratories; Höyläämötie 14; 00380; Helsinki; Finland
| | - Hans Geyer
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6; 50933; Cologne; Germany
| | - Wilhelm Schänzer
- Center for Preventive Doping Research - Institute of Biochemistry; German Sport University Cologne; Am Sportpark Müngersdorf 6; 50933; Cologne; Germany
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Acute Clenbuterol Induces Hypotension, Atrioventricular Block and Cardiac Asystole in the Rabbit. Cardiovasc Toxicol 2012; 13:85-90. [DOI: 10.1007/s12012-012-9185-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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