M
Mario Thevis
Researcher at German Sport University Cologne
Publications - 512
Citations - 13310
Mario Thevis is an academic researcher from German Sport University Cologne. The author has contributed to research in topics: Mass spectrometry & Metabolite. The author has an hindex of 53, co-authored 476 publications receiving 11753 citations. Previous affiliations of Mario Thevis include Saarland University & University of California, Los Angeles.
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Journal ArticleDOI
Determination of Selected Stimulants in Urine for Sports Drug Analysis by Solid Phase Extraction via Cation Exchange and Means of Liquid Chromatography-Tandem Mass Spectrometry:
TL;DR: An analytical method for the qualitative determination of selected stimulants containing a primary or secondary amine moiety in human urine for doping control purposes was developed, providing a rugged and highly specific alternative to the established method utilising gas or liquid chromatography after liquid–liquid extraction.
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Validation of serum IGF-I as a biomarker to monitor the bioactivity of exogenous growth hormone agonists and antagonists in rabbits.
Maximilian Bielohuby,Sayyed Hamid Zarkesh-Esfahani,Jenny Manolopoulou,Elisa Wirthgen,Katja Walpurgis,Mohaddeseh Toghiany Khorasgani,Zahra Sadat Aghili,Ian Wilkinson,Andreas Hoeflich,Mario Thevis,Richard J. Ross,Martin Bidlingmaier +11 more
TL;DR: Unlike in rodents, the IGF-I response to treatment with recombinant human GH or a GHA closely mimics the pharmacodynamics seen in humans, suggesting that rabbits are a suitable new model to test human GH agonists and antagonists.
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Revisiting the metabolism of 19-nortestosterone using isotope ratio and high resolution/high accuracy mass spectrometry.
TL;DR: The aim of this study was to re-investigate the metabolism of 19-nortestosterone in order to probe for additional diagnostic long-term metabolites, which might support the unambiguous attribution of an endo- or exogenous source of detected 19-norandrosterone metabolites.
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Solid-phase extraction-liquid chromatography-tandem mass spectrometry method for the qualitative analysis of 61 synthetic cannabinoid metabolites in urine.
Franziska Gaunitz,Tobias Kieliba,Mario Thevis,Katja Mercer-Chalmers-Bender,Katja Mercer-Chalmers-Bender +4 more
TL;DR: The developed method enables the rapid and sensitive detection of synthetic cannabinoid metabolites in urine, complementing the spectrum of existing analytical tools in forensic case work.
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Identification of fibroblast growth factor 1 (FGF-1) in a black market product
Katja Walpurgis,Andreas Thomas,Tim Laussmann,Luis Horta,Sabine Metzger,Wilhelm Schänzer,Mario Thevis +6 more
TL;DR: In this paper, a new growth factor (referred to as fibroblast growth factor 1/FGF-1) with known effects on the repair and regeneration of damaged tissue was detected in an unlabeled black market product confiscated by the German customs.