Search Results - "Sterk, Saskia"

Towards high throughput analysis using 96-well plate solid phase extraction to determine sedatives and β-blocker residues in food control monitoring by Arrizabalaga-Larrañaga, Ane, van Doorn, Dieke, Sterk, Saskia S.

“…Veterinary drugs are widely used in animal production to prevent infections and treat diseases but, this may cause a risk to consumers. Due to the high number…”
Get full text

Sex hormone-binding globulin regulation of androgen bioactivity in vivo: validation of the free hormone hypothesis by Laurent, Michaël R., Hammond, Geoffrey L., Blokland, Marco, Jardí, Ferran, Antonio, Leen, Dubois, Vanessa, Khalil, Rougin, Sterk, Saskia S., Gielen, Evelien, Decallonne, Brigitte, Carmeliet, Geert, Kaufman, Jean-Marc, Fiers, Tom, Huhtaniemi, Ilpo T., Vanderschueren, Dirk, Claessens, Frank

“…Sex hormone-binding globulin (SHBG) is the high-affinity binding protein for androgens and estrogens. According to the free hormone hypothesis, SHBG modulates…”
Get full text

Evolution and revolutions in the control system for residues of veterinary substances in food-producing animals over more than three decades by Le Bizec, Bruno, Sterk, Saskia S., Van Ginkel, Leendert A., Bergwerff, Aldert A.

Get full text

Development and validation of a semi-quantitative ultra-high performance liquid chromatography-tandem mass spectrometry method for screening of selective androgen receptor modulators in urine by Ventura, Emiliano, Gadaj, Anna, Monteith, Gail, Ripoche, Alexis, Healy, Jim, Botrè, Francesco, Sterk, Saskia S., Buckley, Tom, Mooney, Mark H.

“…•Rapid multi-residue UHPLC-MS/MS assay developed for important SARM compounds.•15 SARMs from several families screened semi-quantitatively in urine test…”
Get full text

Antiviral drugs in animal-derived matrices: A review by Sasse, Samantha, Arrizabalaga-Larrañaga, Ane, Sterk, Saskia S.

“…The ban of antiviral drugs in food-producing animals in several parts of the world, latest by Commission Delegated Regulation (EU) 2022/1644, has increased the…”
Get full text

USB-Powered Coated Blade Spray Ion Source for On-Site Testing Using Transportable Mass Spectrometry by Jager, Josha, Gerssen, Arjen, Pawliszyn, Janusz, Sterk, Saskia S, Nielen, Michel W. F, Blokland, Marco H

“…On-site testing in food analysis using mass spectrometry (MS) requires miniaturization of vacuum systems, mass analyzers, sample cleanup, and ionization…”
Get full text

Distinction of clenbuterol intake from drug or contaminated food of animal origin in a controlled administration trial - the potential of enantiomeric separation for doping control analysis by Parr, Maria Kristina, Blokland, Marco H., Liebetrau, Franz, Schmidt, Alexander H., Meijer, Thijs, Stanic, Mijo, Kwiatkowska, Dorota, Waraksa, Emilia, Sterk, Saskia S.

“…The differentiation of clenbuterol abuse and unintentional ingestion from contaminated meat is crucial with respect to the valuation of an adverse analytical…”
Get full text

Simultaneous determination of five metabolites of nitrofurans including the metabolite nifursol in shrimp and fish by UPLC- MS/MS: in-house method validation according to commission implementing regulation (EU) 2021/808 by Krishnan, Anoop A., Thelukutla, Venkateswarlu, Sengar, Anoop S., Vijayan, Archa, Raveendran, Sisira, Malekadi, Praveen, Sterk, Saskia S., Shanker, Ravi, Reddy, J. S.

“…For the simultaneous identification and quantification of five nitrofurans metabolites in farmed shrimp and fish, 3-amino-2-oxazolidinone (AOZ),…”
Get full text

Discrimination between the exogenous and endogenous origin of thiouracil in farm animals, the final chapter? by Blokland, Marco H., van Tricht, Frederike E., Groot, Maria J., Van Ginkel, Leendert A., Sterk, Saskia S.

“…Thiouracil (2-thiouracil) is a thyreostatic compound that can be used as an illegal growth promoter. In bovine, porcine and other farm animals, low…”
Get full text

Enhanced UHPLC-MS/MS screening of selective androgen receptor modulators following urine hydrolysis by Gadaj, Anna, Ventura, Emiliano, Healy, Jim, Botrè, Francesco, Sterk, Saskia S., Buckley, Tom, Mooney, Mark H.

“…[Display omitted] Selective androgen receptor modulators (SARMs) represent non-steroidal agents commonly abused in human and animal (i.e. equine, canine)…”
Get full text

Detection of anabolic androgenic steroid abuse in doping control using mammalian reporter gene bioassays by Houtman, Corine J., Sterk, Saskia S., van de Heijning, Monique P.M., Brouwer, Abraham, Stephany, Rainer W., van der Burg, Bart, Sonneveld, Edwin

“…Anabolic androgenic steroids (AAS) are a class of steroid hormones related to the male hormone testosterone. They are frequently detected as drugs in sport…”
Get full text

Toward a New European Threshold to Discriminate Illegally Administered from Naturally Occurring Thiouracil in Livestock by Wauters, Jella, Vanden Bussche, Julie, Bizec, Bruno Le, Kiebooms, Julie A. L, Dervilly-Pinel, Gaud, Prevost, Stéphanie, Wozniak, Barbara, Sterk, Saskia S, Grønningen, Dag, Kennedy, D. Glenn, Russell, Sandra, Delahaut, Philippe, Vanhaecke, Lynn

“…Thiouracil is a thyrostat inhibiting the thyroid function, resulting in fraudulent weight gain if applied in the fattening of livestock. The latter abuse is…”
Get full text

Adverse analytical findings with clenbuterol among U-17 soccer players attributed to food contamination issues by Thevis, Mario, Geyer, Lina, Geyer, Hans, Guddat, Sven, Dvorak, Jiri, Butch, Anthony, Sterk, Saskia S., Schänzer, Wilhelm

“…The illicit use of growth promoters in animal husbandry has frequently been reported in the past. Among the drugs misused to illegally increase the benefit of…”
Get full text

A view on the analytical design of future risk based residue control by van Ginkel, Leendert A., Sterk, Saskia S.

“…The current laboratory network system in support of residue monitoring programmes within the EU formally started in the early 1990s. Since then, it has…”
Get full text

Ultratrace LC-MS/MS Analysis of Segmented Calf Hair for Retrospective Assessment of Time of Clenbuterol Administration in Agriforensics by Duvivier, Wilco F, van Beek, Teris A, Meijer, Thijs, Peeters, Ruth J. P, Groot, Maria J, Sterk, Saskia S, Nielen, Michel W. F

“…In agriforensics, time of administration is often debated when illegal drug residues, such as clenbuterol, are found in frequently traded cattle. In this…”
Get full text

Determination and confirmation of selective estrogen receptor modulators (SERMs), anti-estrogens and aromatase inhibitors in bovine and porcine urine using UHPLC-MS/MS by Meijer, Thijs, Essers, Martien L., Kaklamanos, George, Sterk, Saskia S., van Ginkel, Leendert A.

“…Selective estrogen receptor modulators (SERMs), anti-estrogens and aromatase inhibitors are prohibited in human sports doping. However, they also present a…”
Get full text

Evaluation of the Discriminative Potential of a Novel Biomarker for Estradiol Treatments in Bovine Animals by Regal, Patricia, Blokland, Marco H, Fente, Cristina A, Sterk, Saskia S, Cepeda, Alberto, van Ginkel, Leen A

“…The endogenous occurrence of natural hormones obstructs the application of classical targeted methods as confirmatory options. In the case of estradiol, the…”
Get full text

Investigation of the presence of prednisolone in bovine urine by de Rijke, Eva, Zoontjes, Paul W, Samson, Danny, Oostra, Sabrina, Sterk, Saskia S, van Ginkel, Leendert A

“…Over the past two years low levels of prednisolone have been reported in bovine urine by a number of laboratories in European Union member states…”
Get full text

Confirmation and 3D profiling of anabolic steroid esters in injection sites using imaging desorption electrospray ionisation (DESI) mass spectrometry by de Rijke, Eva, Hooijerink, Dick, Sterk, Saskia S., Nielen, Michel W.F.

“…In this study, desorption electrospray ionisation (DESI) linear ion trap tandem mass spectrometry (MS n ) was applied for the confirmation and…”
Get full text

Selective androgen receptor modulators: in vitro and in vivo metabolism and analysis by de Rijke, Eva, Essers, Martien L, Rijk, Jeroen C.W, Thevis, Mario, Bovee, Toine F.H, van Ginkel, Leendert A, Sterk, Saskia S

“…For future targeted screening in National Residue Control Programmes, the metabolism of seven SARMs, from the arylpropionamide and the quinolinone classes, was…”
Get full text