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Du J, Li X, Tian W, Guo C. Determination of higenamine in common natural spices by ultrahigh-performance liquid chromatography-tandem mass spectrometry. Drug Test Anal 2024. [PMID: 38440922 DOI: 10.1002/dta.3672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 03/06/2024]
Abstract
Higenamine (HG) is a β2 receptor agonist and was explicitly added to the Prohibited List of the World Anti-Doping Agency in 2017. This compound is prohibited in both in- and out-of-competition athletes and falls under the category of nonthreshold substances. Because of HG presence in numerous plants, as evidenced by a growing body of research data, an exception was made for HG in the TD2017MRPL document, in which adverse analytical findings (AAFs) were not reported if the urinary HG concentration was less than 10 ng/mL. In this study, a comprehensive and systematic analysis of the HG content in five batches of samples from each of the 48 natural spices selected for this investigation was conducted using UPLC-MS/MS technology. Method validation was carried out in accordance with the ICH Analytical Procedures and Methods Validation for Drugs and Biologics Guidance, and the experimental results demonstrated that the method provided appropriate sensitivity, precision, stability, linearity, and accuracy. HG was detected for the first time in Houttuynia cordata, Zingiber officinale, Cinnamomum cassia, Stevia rebaudiana, Piper nigrum, Siraitia grosuenorii, Platycodon grandiflorus, and Myristica fragrans. Furthermore, the content of HG was found to vary significantly among the different plant parts of Nelumbo nucifera, such as rhizomes, leaves, seeds, and plumules. This paper provides systematic and comprehensive data to support the safe use of spices in athletes' diets, thereby reducing the risk of food-sourced doping violations.
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Affiliation(s)
- Jinming Du
- Pharmaceutical Factory, Sichuan Provincial Orthopedic Hospital, Chengdu, China
| | - Xuefen Li
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wenyi Tian
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chengjun Guo
- Key Laboratory of Active Ingredient and Function Research in Natural Medicine, Athlete Rehabilitation Research Center of Shandong Province, Jinan, China
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Jędrejko K, Catlin O, Stewart T, Muszyńska B. Mexidol, Cytoflavin, and succinic acid derivatives as antihypoxic, anti-ischemic metabolic modulators, and ergogenic aids in athletes and consideration of their potential as performance enhancing drugs. Drug Test Anal 2024. [PMID: 38403950 DOI: 10.1002/dta.3655] [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: 10/12/2023] [Revised: 01/20/2024] [Accepted: 01/26/2024] [Indexed: 02/27/2024]
Abstract
Emoxypine (ethylmethylhydroxypyridine) is a synthetic derivative of vitamin B6 . Emoxypine succinate is a registered drug in Russia and Ukraine under various trade names including Mexidol, Mexicor, and Armadin Long. Mexidol demonstrates antihypoxic and anti-ischemic effects and also modulates metabolism. The use of Mexidol by Russian athletes has been confirmed in the past. Current use by athletes is unknown as this drug is not monitored or included in drug testing protocol. Metabotropic and antihypoxic effects of Mexidol were compared to the effects of meldonium or trimetazidine, both of which are included on the World Anti-Doping Agency (WADA) Prohibited List in category S4.4. Metabolic Modulators. The conjugation of emoxypine with succinate elevates the therapeutic effectiveness of the Mexidol formulation as succinic acid itself has important impacts to consider despite being a common food additive and drug excipient. Other succinic acid salts like ammonium succinate, found as dietary supplement, have been patented as performance enhancers. Available research on healthy subjects suggests that combinations of selected 3-substituted pyridine derivatives with succinate including Mexidol and a related drug Cytoflavin can enhance the performance of athletes. Cytoflavin is a multi-component formula containing meglumine sodium succinate, nicotinamide (vitamin B3 ), inosine (riboxin), and riboflavin. Other related succinate-based drugs include Remaxol, Reamberin, and Cogitum. Mexidol and Cytoflavin and related substances exhibit similar biological effects as drugs on the WADA Prohibited List, and if they are used for performance enhancement by athletes, they could be worthy of consideration as prohibited substances in sport.
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Affiliation(s)
- Karol Jędrejko
- Faculty of Pharmacy, Department of Pharmaceutical Botany, Jagiellonian University Medical College, Kraków, Poland
| | - Oliver Catlin
- Banned Substances Control Group (BSCG), Los Angeles, California, USA
| | - Timothy Stewart
- Banned Substances Control Group (BSCG), Los Angeles, California, USA
| | - Bożena Muszyńska
- Faculty of Pharmacy, Department of Pharmaceutical Botany, Jagiellonian University Medical College, Kraków, Poland
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Thevis M, Kuuranne T, Geyer H. Annual banned-substance review 16 th edition-Analytical approaches in human sports drug testing 2022/2023. Drug Test Anal 2024; 16:5-29. [PMID: 37985429 DOI: 10.1002/dta.3602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/22/2023]
Abstract
In this 16th edition of the annual banned-substance review on analytical approaches in human sports drug testing, literature on recent developments in this particular section of global anti-doping efforts that was published between October 2022 and September 2023 is summarized and discussed. Most recent additions to the continuously growing portfolio of doping control analytical approaches and investigations into analytical challenges in the context of adverse analytical findings are presented, taking into account existing as well as emerging challenges in anti-doping, with specific focus on substances and methods of doping recognized in the World Anti-Doping Agency's 2023 Prohibited List. As in previous years, focus is put particularly on new or enhanced analytical options in human doping controls, appreciating the exigence and core mission of anti-doping and, equally, the conflict arising from the opposingly trending extent of the athlete's exposome and the sensitivity of instruments nowadays commonly available in anti-doping laboratories.
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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
| | - 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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Thevis M. The 41 st Manfred Donike workshop on doping analysis. Drug Test Anal 2023; 15:1310-1311. [PMID: 37933681 DOI: 10.1002/dta.3601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 10/23/2023] [Indexed: 11/08/2023]
Affiliation(s)
- Mario Thevis
- Institute of Biochemistry, German Sport University Cologne, Cologne, Germany
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Kintz P, Gheddar L, Blanchot A, Ameline A, Raul JS. Testing for clomiphene in keratinous matrices (hair and nail). J Anal Toxicol 2023; 47:703-708. [PMID: 37522606 DOI: 10.1093/jat/bkad050] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 07/06/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023] Open
Abstract
Clomiphene or clomifene is a selective estrogen receptor modulator used to treat female fertility in case of ovulatory dysfunction. In sport, clomiphene is prohibited at all times for use by athletes and is listed in the section S4.2 (hormone and metabolic modulators) by the World Anti-Doping Agency. Indeed, clomiphene can indirectly increase testosterone levels in the body and can mitigate some side effects of synthetic steroid abuse. Despite its prescription to millions of subjects, its detection in human hair or nail clippings has never been reported. The aim of this study was to develop a specific method to identify clomiphene in hair and nail clippings by liquid chromatography-quadrupole tandem mass spectrometry. The procedure was then applied in a case of challenged doping results. The method involves sonication/incubation for 1 h of 30 mg of pulverized material in 1 mL of methanol in the presence of 2 ng diazepam-d5 used as internal standard. The chromatographic separation was performed using a HSS C18 column with a 15 min gradient elution. After spiking blank hair and nail with the corresponding amounts of clomiphene, linearity was verified from 1 to 500 pg/mg (r2 = 0.9994 and 0.9995 for hair and nail, respectively). The limit of detection was estimated at 0.3 pg/mg for both matrices. No interference was noted from endogenous compounds, particularly steroids. Clomiphene was identified at 85 and 20 pg/mg in the pubic hair and the fingernail clippings, respectively, of a male athlete challenging an adverse analytical finding.
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Affiliation(s)
- Pascal Kintz
- Institut de médecine légale, 11 rue Humann, Strasbourg 67000, France
- X-Pertise Consulting, 42 rue Principale, Mittelhausbergen 67206, France
| | - Laurie Gheddar
- Institut de médecine légale, 11 rue Humann, Strasbourg 67000, France
| | - Adeline Blanchot
- Institut de médecine légale, 11 rue Humann, Strasbourg 67000, France
| | - Alice Ameline
- Institut de médecine légale, 11 rue Humann, Strasbourg 67000, France
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Broberg MN, Knych H, Bondesson U, Pettersson C, Tidstedt B, Stanley S, Thevis M, Hedeland M. Equine in vivo metabolite profiling of the selective androgen receptor modulator LGD-3303 for doping control. J Pharm Biomed Anal 2023; 233:115468. [PMID: 37224728 DOI: 10.1016/j.jpba.2023.115468] [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: 03/10/2023] [Revised: 04/27/2023] [Accepted: 05/17/2023] [Indexed: 05/26/2023]
Abstract
LGD-3303 is a Selective Androgen Receptor Modulator (SARM) that is prohibited in both equine and human sports due to its anabolic properties. The aim of this study was to investigate the equine in vivo metabolite profile of LGD-3303 and identify drug metabolites that can be suitable as new and improved analytical targets for equine doping control. This was performed by an oral administration of 0.05 mg·kg-1 LGD-3303 to horses, where blood and urine samples were collected up to 96 h after administration. The in vivo samples consisting of plasma, urine and hydrolyzed urine were analyzed utilizing ultra-high performance liquid chromatography hyphenated to a Q Exactive™ Orbitrap™ high resolution mass spectrometer with a heated electrospray ionization source. A total of eight metabolites of LGD-3303 were tentatively identified, including one carboxylated and several hydroxylated metabolites in combination with glucuronic acid conjugates. A monohydroxylated metabolite is suggested as an analytical target for doping control analysis of plasma and urine after hydrolysis with β-glucuronidase, due to the high intensity and prolonged detection time in comparison to parent LGD-3303.
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Affiliation(s)
- Malin Nilsson Broberg
- Department of Medicinal Chemistry, Uppsala University, Box 574, 75123 Uppsala Sweden
| | - Heather Knych
- Kenneth L. Maddy Equine Analytical Pharmacology Laboratory, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Ulf Bondesson
- Department of Medicinal Chemistry, Uppsala University, Box 574, 75123 Uppsala Sweden
| | - Curt Pettersson
- Department of Medicinal Chemistry, Uppsala University, Box 574, 75123 Uppsala Sweden
| | - Börje Tidstedt
- Department of Chemistry, Environment and Feed Hygiene, National Veterinary Institute (SVA), 75189 Uppsala, Sweden
| | - Scott Stanley
- Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546, USA
| | - Mario Thevis
- Institute of Biochemistry, Center for Preventive Doping Research, German Sport University, 50933 Cologne, Germany
| | - Mikael Hedeland
- Department of Medicinal Chemistry, Uppsala University, Box 574, 75123 Uppsala Sweden.
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