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Letters to the Editor, Preprints, Online Sources, Application notes, etc.

[K21]     Ambrosio G, Yuliandra T, Wuest B, Mazzarino M, de la Torre X, Botre F, Diel P, Isenmann E, Parr MK. Urinary elimination of ecdysterone and its metabolites following a single-dose administration in humans. Preprints (2021) 2021050106 (doi: 10.20944/preprints202105.0106.v1)

[K20]     Loke S, Liu L, Wenzel M, Scheffler H, Iannone M, De La Torre X, Schloerer N, Botrè F, Keiler AM, Bureik M, Parr MK. New insights into the metabolism of methyltestosterone and metandienone: Detection of novel A-ring reduced metabolites. Preprints (2021) 2021020420 (doi: 10.20944/preprints202102.0420.v1)

[K19]     Parr MK, Ambrosio G, Wuest B, Mazzarino M, De La Torre X, Sibilia F, Joseph JF, Diel P, Botrè F. Targeting the Administration of Ecdysterone in Doping Control Samples. bioRxiv (2019) 685230 (doi: 10.1101/685230)

[K18]     Parr MK, Piana GL, Stoll A, Joseph JF, Loke S, Schlörer N, Torre XDL, Botrè F. Tracing Back Drug Misuse – Proper Metabolite Identification Requires Synthesis. ResearchGate (2019) (doi: 10.13140/RG.2.2.29373.08167)

[K17]     Teubel J, Wüst B, Schipke CG, Peters O, Parr MK. Mass spectrometric detection of neurosteroids in cerebrospinal fluid (CSF) as potential biomarkers of post-operative cognitive dysfunction (POCD) ResearchGate (2016) (doi: 10.13140/RG.2.2.25174.55368)

[K16]     Parr MK, Wüst B, Nägele E, Botre F. SFC-MS/MS as Orthogonal Technique for Improved Detection of Polar Analytes in Anti-Doping Control. ResearchGate (2015) (doi: 10.13140/RG.2.1.1714.5360)

[K15]     Parr MK, Nägele E, Wüst B. Determination of beta-blockers in urine using supercritical fluid chromatography and mass spectrometry. Application note, 5991-6437EN, Agilent Technologies Inc. (2015) 1-8

[K14]     Parr MK, Wolber G, Naß A, Ambrosio G, Botrè F, Diel P. ER-beta mediated action of dietary supplement ingredient edcysterone confirmed by docking experiments. Endocr Rev (2015), FRI-270

[K13]     Parr MK, Haupt O, Tchoukouegno Ngueu S, Fritzemeier KH, Muhn P, Diel PR. Estrogen receptor beta mediated anabolic effects insights from mechanistic studies on the phytoecdysteroid ecdysterone and selective ligands. Endocrine Rev 34 (2013) SAT-340

[K12]     Parr MK, Sobieszuk G, Wolber G. Hydroxylation simulation of xenobiotic steroids by CYP11B2. Endocrine Rev 34 (2013) SAT-378

[K11]     Hengevoß J, Rojas S, Piechotta M, Parr MK, Diel P. Endocrine fingerprint analyses as an alternative strategy to detect the abuse of anabolic steroids. Exp Clin Endocrinol Diabetes; 121 (2013) 64

[K10]     Parr MK. Neuroenhancement – Doping fürs Gehirn – Ein Thema für Sportstudierende? – aktuelle Studienergebnisse. In: Bodemer I, Jesse B (eds.). KleineS Handbuch der Lehre an der DSHS Köln. Deutsche Sporthochschule Köln (2011) 36-37

[K9]        Parr MK, Diel P, Zierau O, Schänzer W. Characterization of the anabolic and androgenic properties of the unapproved aromatase inhibitor androsta-1,4,6-triene-3,17-dione. Endocrine Reviews 31 (2010) S175

[K8]        Zöllner A, Parr MK, Dragan C-A, Peters F, Maurer HH, Schänzer W, Bureik M. CYP21 catalyzed production of 18-nor-17β-hydroxymethyl,17α-methylandrosta-1,4,13-trien-3-one: A new player in the fight against doping. Drug Metabolism Reviews 41 (2009) S1, 80

[K7]        Parr MK, Geyer H, Köhler K, Schänzer W. Cross-contaminations of vitamin- and mineral-tablets with metandienone and stanozolol. Lebensmittelchemie 62 (2008) 76

[K6]        Mareck U, Geyer H, Parr MK, Schänzer W. Hoch dosierte Anabolika in Nahrungsergänzungsmitteln. Lebensmittelchemie 59 (2005) 14

[K5]        Parr MK, Geyer H, Reinhart U, Mareck U, Schänzer W. Verunreinigungen von Nahrungsergänzungsmitteln mit anabolen Steroiden. Lebensmittelchemie 57 (2003) 36

[K4]        Parr MK, Geyer H, Rommelfanger J, Schänzer W. Anabole Steroide in Nahrungsergänzungsmitteln in Deutschland. Lebensmittelchemie 57 (2003) 158-159

[K3]        Mareck U, Geyer H, Parr MK, Reinhart U, Schänzer W. Untersuchung von nicht-hormonellen Nahrungsergänzungsmitteln (NEM) auf nicht deklarierte anabol-androgene Steroide - eine internationale Studie. Lebensmittelchemie 57 (2003) 64-65

[K2]        Parr MK, Schänzer W. Sind Asthma-Medikamente Dopingmittel? Lungenheilkunde 4 (2002) 8-11

[K1]        Henze MK. Athletes and fenoterol. Thorax 55 (2000) 441-442