Search Results - "Kazlauskas, Rymantas"

Reproductive Hormone Reference Intervals for Healthy Fertile Young Men: Evaluation of Automated Platform Assays by Sikaris, Ken, McLachlan, Robert I., Kazlauskas, Rymantas, de Kretser, David, Holden, Carol A., Handelsman, David J.

“…Context: Management of male infertility and/or androgen deficiency requires accurate hormonal measurements with valid reference intervals. Objective: The…”
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Determination of urinary steroid sulfate metabolites using ion paired extraction by Cawley, Adam T., Kazlauskas, Rymantas, Trout, Graham J., George, Adrian V.

“…The need for laboratories accredited by the World Anti-Doping Agency (WADA) to develop methods of analysis for steroids excreted primarily as their sulfate…”
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Ecdysteroids as non-conventional anabolic agent: performance enhancement by ecdysterone supplementation in humans by Isenmann, Eduard, Ambrosio, Gabriella, Joseph, Jan Felix, Mazzarino, Monica, de la Torre, Xavier, Zimmer, Philipp, Kazlauskas, Rymantas, Goebel, Catrin, Botrè, Francesco, Diel, Patrick, Parr, Maria Kristina

“…Recent studies suggest that the anabolic effect of ecdysterone, a naturally occurring steroid hormone claimed to enhance physical performance, is mediated by…”
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Advances in sports drug testing: An overview by Kazlauskas, Rymantas

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Perfomance Enhancing Effects Of Ecdysterone- A Human Intervention Study: 350 Board #188 May 29 9:30 AM - 11:00 AM by Diel, Patrick, Isenmann, Eduard, Ambrosio, Gabriella, Joseph, Jan Felix, de la Torre, Xavier, Zimmer, Philipp, Kazlauskas, Rymantas, Goebel, Catrin, Botre, Francesco M, Parr, Maria Kristina

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The importance of reference materials in doping-control analysis : Anti-Doping Analysis by MACKAY, Lindsey G, KAZLAUSKAS, Rymantas

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The importance of reference materials in doping-control analysis by Mackay, Lindsey G., Kazlauskas, Rymantas

“…Currently a large range of pure substance reference materials are available for calibration of doping-control methods. These materials enable traceability to…”
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Medication Use in Athletes Selected for Doping Control at the Sydney Olympics (2000) by Corrigan, Brian, Kazlauskas, Rymantas

“…During the Olympic Games held in Sydney in September, 2000 Doping Control was undertaken as specified in the International Olympic Code. During this process…”
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Evaluation of Androgenic Activity of Nutraceutical-Derived Steroids Using Mammalian and Yeast in Vitro Androgen Bioassays by Akram, Omar N, Bursill, Christina, Desai, Reena, Heather, Alison K, Kazlauskas, Rymantas, Handelsman, David J, Lambert, Gilles

“…Androgenic steroids marketed online as nutraceuticals are a growing concern in sport doping. The inability of conventional mass spectrometry (MS)-based…”
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Effects of recombinant human LH and hCG on serum and urine LH and androgens in men by Handelsman, David J., Goebel, Catrin, Idan, Amanda, Jimenez, Mark, Trout, Graham, Kazlauskas, Rymantas

“…Summary Context  The administration of gonadotrophins is prohibited in sport but the effect in men of recently available recombinant hCG and LH on serum and…”
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Carbon isotope ratio (δ 13C) values of urinary steroids for doping control in sport by Cawley, Adam T., Trout, Graham J., Kazlauskas, Rymantas, Howe, Christopher J., George, Adrian V.

“…The detection of steroids originating from synthetic precursors in relation to their chemically identical natural analogues has proven to be a significant…”
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Sports drug testing--an analyst's perspective by Trout, Graham J, Kazlauskas, Rymantas

“…Sport plays a major role in the lives of many people, both for active participation and as entertainment. Sport is now a huge nationally and internationally…”
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N,N-dimethyl-2-phenylpropan-1-amine - new designer agent found in athlete urine and nutritional supplement by Kwiatkowska, Dorota, Wójtowicz, Marzena, Jarek, Anna, Goebel, Catrin, Chajewska, Katarzyna, Turek-Lepa, Ewa, Pokrywka, Andrzej, Kazlauskas, Rymantas

“…Reports of new designer agents banned in sport being detected in supplements widely available for athletes are constantly emerging. The task of anti‐doping…”
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The use of tandem yeast and mammalian cell in vitro androgen bioassays to detect androgens in internet‐sourced sport supplements by Cooper, Elliot R., McGrath, Kristine C.Y., Li, Xiaohong, Akram, Omar, Kasz, Robert, Kazlauskas, Rymantas, McLeod, Malcolm D., Handelsman, David J., Heather, Alison K.

“…Sport supplements containing steroids never approved for therapeutic use have the potential for abuse by athletes. Most are marketed online and may contain…”
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Rapid screening method for diuretics in doping control using automated solid phase extraction and liquid chromatography-electrospray tandem mass spectrometry by Goebel, Catrin, Trout, Graham J, Kazlauskas, Rymantas

“…A new method has been developed for the routine detection of diuretics in urine samples collected from athletes. The method developed uses automated solid…”
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Stable isotope ratio profiling of testosterone preparations by Cawley, Adam, Collins, Michael, Kazlauskas, Rymantas, Handelsman, David J, Heywood, Robert, Longworth, Mitchell, Arenas-Queralt, Andrea

“…Gas chromatography‐combustion‐isotope ratio mass spectrometry (GC‐C‐IRMS) is the preferred method of confirming the administration of exogenous testosterone by…”
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Pharmacodynamics of Growth Hormone Abuse Biomarkers and the Influence of Gender and Testosterone: A Randomized Double-Blind Placebo-Controlled Study in Young Recreational Athletes by Nelson, Anne E., Meinhardt, Udo, Hansen, Jennifer L., Walker, Irene H., Stone, Glenn, Howe, Christopher J., Leung, Kin-chuen, Seibel, Markus J., Baxter, Robert C., Handelsman, David J., Kazlauskas, Rymantas, Ho, Ken K.

“…Context: IGF axis proteins and collagen peptides are promising markers of GH abuse. Objective: Our objective was to investigate whether responses of serum IGF…”
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Second-generation blood tests to detect erythropoietin abuse by athletes by Gore, CJ, Parisotto, R, Ashenden, MJ, Stray-Gundersen, J, Sharpe, K, Hopkins, W, Emslie, KR, Howe, C, Trout, GJ, Kazlauskas, R, Hahn, AG

“…Australian Institute of Sport, Adelaide, SA 5022, Australia. chris.gore@ausport.gov.au BACKGROUND AND OBJECTIVES: We previously developed blood tests that were…”
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External calibration in Gas Chromatography–Combustion–Isotope Ratio Mass Spectrometry measurements of endogenous androgenic anabolic steroids in sports doping control by Kioussi, Maroula K., Angelis, Yiannis S., Cawley, Adam T., Koupparis, Michalis, Kazlauskas, Rymantas, Brenna, J. Thomas, Georgakopoulos, Costas G.

“…An alternative calibration procedure for the Gas Chromatography–Combustion–Isotope Ratio Mass Spectrometry (GC–C–IRMS) measurements of the World Antidoping…”
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The detection of androstenedione abuse in sport: a mass spectrometry strategy to identify the 4-hydroxyandrostenedione metabolite by Cawley, Adam T., Trout, Graham J., Kazlauskas, Rymantas, George, Adrian V.

“…Studies have shown that the administration of androstenedione (ADIONE) significantly increases the urinary ratio of testosterone glucuronide to epitestosterone…”
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