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Cost Minimized Immunoaffinity Purification of EPO and Its Analogs in Doping Control-A Step-by-Step Protocol for Human Urine and Blood.
Drug Test Anal
January 2025
European Monitoring Center for Emerging Doping Agents, German Sport University Cologne, Cologne, Germany.
A cost minimized immunoaffinity protocol was developed, which allows the direct purification of ERAs (urinary and recombinant human EPO, Darbepoetin, EPO-Fc, CERA) from human urine. The method applies magnetic beads and needs no covalent immobilization of the capture antibody. It requires only 10 mL of urine, 1 μg of anti-EPO antibody, and 25 μL of bead slurry.
View Article and Find Full Text PDFImpact of Repeated Glucocorticoid Oral Administration on the Urinary Steroid Profile.
Drug Test Anal
January 2025
Catalonian Antidoping Laboratory, Doping Control Research Group, Hospital del Mar Research Institute, Barcelona, Spain.
The detection of endogenous anabolic androgenic steroids (EAAS) is performed with the Steroidal Module of the Athlete Biological Passport (ABP). Glucocorticoids (GC) could be a confounding factor to the ABP Steroidal Module because they inhibit the hypothalamic-pituitary-adrenal axis, and ABP metabolites have partial adrenal origin. In previous studies, single-dose systemic GC administrations have been shown to reduce the urinary ratios A/T and 5αdiol/E.
View Article and Find Full Text PDFShape-controlled asymmetric bowl-like PDA@Au substrates for sensitive SERS detection of anabolic androgenic steroids.
Talanta
January 2025
Shanghai Institute of Doping Analyses, Shanghai University of Sport, Shanghai, 200438, PR China; Center for Single-Cell Omics, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, PR China. Electronic address:
The widespread accumulation of androgenic steroid endocrine disruptors in water and food has garnered increasing attention due to their significant risks to ecosystems and human health. These steroids, which cannot be completely eliminated, highlight the urgent need for advanced detection technologies. In this study, we present a novel emulsion-induced interface-anisotropic assembly strategy to synthesize bowl-like mesoporous polydopamine (PDA) particles, which exhibit high sensitivity in surface-enhanced Raman scattering (SERS) detection.
View Article and Find Full Text PDFGene Doping Detection From the Perspective of 3D Genome.
Drug Test Anal
January 2025
Research Institute for Doping Control, Shanghai University of Sport, Shanghai, China.
Since the early 20th century, the concept of doping was first introduced. To achieve better athletic performance, chemical substances were used. By the mid-20th century, it became gradually recognized that the illegal use of doping substances can seriously endangered athletes' health and compromised the fairness of sports competitions.
View Article and Find Full Text PDFThe Impact of Triptorelin on Hormone Levels in Human and Its Metabolite Confirmation Using Liquid Chromatography-Ion Trap/Time-of-Flight Mass Spectrometry (LC/MS-IT-TOF) and Liquid Chromatography-Orbitrap (LC-Orbitrap) for Doping Control Analysis.
Drug Test Anal
January 2025
Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok, Thailand.
Triptorelin, a synthetic gonadotrophin-releasing hormone (GnRH), is mainly used in the clinical treatment of prostate cancer. The mechanism initially stimulates luteinizing hormone (LH) and testosterone secretion followed by suppression, resulting in a reduction in cancer progression. However, GnRHs are prohibited in doping control because of the indirect surge of LH and testosterone.
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