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Home / Equine Research Bank / Drug Test Anal / Identification of Candidate Biomarkers Detected in the Urine...
Drug testing and analysis2025; 17(12); 2411-2420; doi: 10.1002/dta.3951

Identification of Candidate Biomarkers Detected in the Urine of Racehorses After Anabolic Agent Administration: Use of Orthogonal Methods for Structural Elucidation.

Abstract: Biomarker identification by mass spectrometry represents a key step in the workflow of nontargeted metabolomic studies. Given the complexity of the data, this step, which must be carried out by a trained specialist, is time-consuming, and the biomarkers discovered are not always identified. While this stage is not an obstacle to the development of new screening and classification tools, it is nonetheless crucial to a better understanding of the results obtained. For this reason, the aim of this study was to perform structural elucidation of candidate biomarkers, which had previously been displayed to screen for the administration of anabolic agents in the urine of racehorses and whose robustness had been evaluated. The present study involved a combination of various analytical strategies, including enzymatic hydrolysis, high-resolution mass spectrometry and ion mobility (LC-HRMS, LC-IMS-HRMS), and in vitro experiments. Two candidate biomarkers were identified as phase II metabolites of tebuconazole, belonging to the equine exposome. This identification opens the way to further investigations into the relationship between the presence of this compound and its disruption in horse urine following anabolic agent administration. Overall, the use of orthogonal approaches provided better complementary information on the structure of the compound and ultimately enabled us to identify biomarkers with the highest possible level of confidence.
© 2025 John Wiley & Sons Ltd.
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Publication Date: 2025-09-18 PubMed ID: 40968575DOI: 10.1002/dta.3951Google Scholar: Lookup
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APA
Cloteau C, Delcourt V, Loup B, Chabot B, Pescher M, Susdorf E, Kaabia Z, Garcia P, Popot MA, Le Bizec B, Dervilly G, Bailly-Chouriberry L. (2025). Identification of Candidate Biomarkers Detected in the Urine of Racehorses After Anabolic Agent Administration: Use of Orthogonal Methods for Structural Elucidation. Drug Test Anal, 17(12), 2411-2420. https://doi.org/10.1002/dta.3951

Publication

Drug testing and analysis
ISSN: 1942-7611
NlmUniqueID: 101483449
Country: England
Language: English
Volume: 17
Issue: 12
Pages: 2411-2420

Researcher Affiliations

Cloteau, C
  • Oniris, INRAE, LABERCA, Nantes, France.
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Delcourt, V
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Loup, B
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Chabot, B
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Pescher, M
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Susdorf, E
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Kaabia, Z
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Garcia, P
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Popot, M A
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.
Le Bizec, B
  • Oniris, INRAE, LABERCA, Nantes, France.
Dervilly, G
  • Oniris, INRAE, LABERCA, Nantes, France.
Bailly-Chouriberry, L
  • GIE LCH, Laboratoire des Courses Hippiques, Verrières-le-Buisson, France.

MeSH Terms

  • Horses / urine
  • Animals
  • Biomarkers / urine
  • Anabolic Agents / urine
  • Anabolic Agents / administration & dosage
  • Anabolic Agents / metabolism
  • Doping in Sports
  • Substance Abuse Detection / methods
  • Substance Abuse Detection / veterinary
  • Mass Spectrometry / methods
  • Chromatography, Liquid / methods
  • Triazoles / urine
  • Triazoles / metabolism
  • Triazoles / administration & dosage

Grant Funding

  • 2019/1948 / Association Nationale de la Recherche et de la Technologie

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