Search Results - "Alechaga, Élida"

Evaluation of sulfate metabolites as markers of topical testosterone administration in Caucasian and Asian populations by Bressan, Claudia, Alechaga, Élida, Monfort, Nuria, Ventura, Rosa

“…Sulfate metabolites of endogenous anabolic androgenic steroids (EAAS) have been shown to prolong the detection times compared with the conventional urinary…”
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Comparison of magnetic bead surface functionalities for the immunopurification of growth hormone-releasing hormones prior to liquid chromatography-high resolution mass spectrometry by Pont, Laura, Alechaga, Élida, Terrero, Alejandro, Monfort, Núria, Ventura, Rosa

“…•We compared magnetic bead functionalities for the immunopurification of GHRH analogues.•We also evaluated critical aspects regarding analyte stability in…”
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Effects of structural characteristics of (un)conjugated steroid metabolites in their collision cross section value by Bressan, Claudia, Celma, Alberto, Alechaga, Élida, Monfort, Nuria, Ventura, Rosa, Sancho, Juan Vicente

“…In this work, the collision cross section (CCS) value of 103 steroids (including unconjugated metabolites and phase II metabolites conjugated with sulfate and…”
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Direct quantitation of endogenous steroid sulfates in human urine by liquid chromatography‐electrospray tandem mass spectrometry by Esquivel, Argitxu, Alechaga, Élida, Monfort, Núria, Ventura, Rosa

“…A method based on liquid chromatography–tandem mass spectrometry (LC–MS/MS) for the direct quantitation of endogenous steroid sulfates has been developed to be…”
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Sulfate metabolites improve retrospectivity after oral testosterone administration by Esquivel, Argitxu, Alechaga, Élida, Monfort, Nuria, Ventura, Rosa

“…The detection of testosterone (T) misuse is performed using the steroid profile that includes concentrations of T and related metabolites excreted free and…”
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Achieving routine application of dried blood spots for erythropoietin receptor agonist analysis in doping control: low-volume single-spot detection at minimum required performance level by Requena-Tutusaus, Lídia, Anselmo, Indira, Alechaga, Élida, Bergés, Rosa, Ventura, Rosa

“…Erythropoietin receptor agonists (ERAs) are substances prohibited in sports and currently monitored in urine and blood. There is a great interest in new…”
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Ion-molecule adduct formation in tandem mass spectrometry by Alechaga, Élida, Moyano, Encarnación, Galceran, Maria Teresa

“…Nowadays most LC-MS methods rely on tandem mass spectrometry not only for quantitation and confirmation of compounds by multiple reaction monitoring (MRM), but…”
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Potential of desorption electrospray ionization and paper spray ionization with high-resolution mass spectrometry for the screening of sports doping agents in urine by Bressan, Claudia, Seró, Raquel, Alechaga, Élida, Monfort, Nuria, Moyano, Encarnación, Ventura, Rosa

“…In this work, desorption electrospray ionization and paper spray ionization both with high-resolution mass spectrometry (DESI-HRMS and PSI-HRMS) were explored…”
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Metabolic study of trimetazidine using ultra-high performance liquid chromatography-tandem mass spectrometry by Chomaničová, Kamila, Silva, Élida Alechaga, Alemany, Rosa Ventura

“…In the present study, the application of ultra-high performance liquid chromatography-tandem mass spectrometry allowed us to study of known-as well as hitherto…”
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Additional studies on triamcinolone acetonide use and misuse in sports: Elimination profile after intranasal and high-dose intramuscular administrations by Coll, Sergi, Monfort, Núria, Alechaga, Élida, Matabosch, Xavier, Pérez-Mañá, Clara, Ventura, Rosa

“…[Display omitted] •The current criterion does not detect IM administrations of TA.•The best criterion to detect TA misuse in sports is a reporting level of…”
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Evaluation of sulfate metabolites as markers of intramuscular testosterone administration in Caucasian and Asian populations by Esquivel, Argitxu, Alechaga, Élida, Monfort, Nuria, Yang, Sheng, Xing, Yanyi, Moutian, Wu, Ventura, Rosa

“…The introduction of alternative markers to the steroid profile can be an effective approach to improving the screening capabilities for the detection of…”
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Determination of polyphenolic profiles by liquid chromatography-electrospray-tandem mass spectrometry for the authentication of fruit extracts by Puigventós, Lidia, Navarro, Meritxell, Alechaga, Élida, Núñez, Oscar, Saurina, Javier, Hernández-Cassou, Santiago, Puignou, Lluis

“…Liquid chromatography-electrospray-tandem mass spectrometry (LC-ESI-MS/MS) was applied to the analysis and authentication of fruit-based products and…”
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Analysis of hydroxylated phenylalkylamine stimulants in urine by GC-APPI-HRMS by Bressan, Claudia, Ayala-Cabrera, Juan F., Santos, Francisco Javier, Cuadras, Susana, Garrostas, Lorena, Monfort, Núria, Alechaga, Élida, Moyano, Encarnación, Ventura, Rosa

“…A gas chromatography-atmospheric pressure photoionization-high-resolution mass spectrometry (GC-APPI-HRMS) method was developed for the determination of eight…”
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Mixed-mode liquid chromatography coupled to tandem mass spectrometry for the analysis of aminoglycosides in meat by Alechaga, Élida, Moyano, Encarnación, Galceran, M. Teresa

“…A novel LC-MS/MS method has been developed for the determination of 13 aminoglycoside antibiotics in meat products. Among the chromatographic columns tested,…”
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Wide-range screening of psychoactive substances by FIA–HRMS: identification strategies by Alechaga, Élida, Moyano, Encarnación, Galceran, Maria Teresa

“…Recreational drugs (illicit drugs, human and veterinary medicines, legal highs, etc.) often contain lacing agents and adulterants which are not related to the…”
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Ultra-high performance liquid chromatography-tandem mass spectrometry for the analysis of phenicol drugs and florfenicol-amine in foods by Alechaga, Élida, Moyano, Encarnación, Galceran, M Teresa

“…A method based on ultra-high performance liquid chromatography (UHPLC) is proposed for the determination of chloramphenicol (CAP), its related compounds,…”
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Elimination profiles of betamethasone after different administration routes: Evaluation of the reporting level and washout periods to ensure safe therapeutic administrations by Coll, Sergi, Monfort, Núria, Alechaga, Élida, Matabosch, Xavier, Pérez‐Mañá, Clara, Ventura, Rosa

“…Betamethasone (BET) is prohibited in sports competitions when administered by systemic routes, and it is allowed by other routes for therapeutic purposes. In…”
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Elimination profiles of prednisone and prednisolone after different administration routes: Evaluation of the reporting level and washout periods to ensure safe therapeutic administrations by Coll, Sergi, Monfort, Núria, Alechaga, Élida, Matabosch, Xavier, Pozo, Oscar J., Pérez‐Mañá, Clara, Ventura, Rosa

“…Prednisolone (PRED) and prednisone (PSONE) are prohibited in sports competitions when administered by systemic routes, and they are allowed by other routes for…”
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Survey of the occurrence of pharmaceuticals in Spanish finished drinking waters by Boleda, M. Rosa, Alechaga, Élida, Moyano, Encarnación, Galceran, M. Teresa, Ventura, Francesc

“…Fifty samples of finished drinking waters (FDWs) from Spain covering 12 million inhabitants were tested for 53 pharmaceuticals pertaining to 12 different…”
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Atmospheric pressure ionization-tandem mass spectrometry of the phenicol drug family by Alechaga, Élida, Moyano, Encarnación, Galceran, M. Teresa

“…In this work, the mass spectrometry behaviour of the veterinary drug family of phenicols, including chloramphenicol (CAP) and its related compounds…”
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