RESUMO
Clenbuterol (Clb) can be present in Mexico often but not all over the world in animal tissues and organs, therefore, potentially is derived from animal sources as well. The aims of this study were to develop and validate a method for detecting traces of clenbuterol in beef sausages. A calibration curve showed linearity in the range of 20-500 pg ml-1 . The limit of detection (LOD) and lower limit of quantification (LLOQ) were 5 and 10 pg g-1 , respectively. The analyte recovery was from 95.70% to 100.40% with an intraday relative standard deviation (RSD%) of 0.99%-2.10% and an interday RSD% of 0.54%-2.34%, R2 = 0.9998. The methodology developed was applied successfully in 15 samples of beef sausage, and 73.3% of the samples tested contained racemic clenbuterol in concentrations between 30 and 471 pg g-1 . The UHPLC-MS/MS method developed combines high sensitivity with good selectivity and short chromatographic run time. Additionally, the enantiomeric analysis of clenbuterol performed in beef sausages showed a 59% for R-(-)-Clb and 41% for S-(+)-Clb. The presence of clenbuterol in beef sausages could represent a risk of unintentional doping in sport field, because the clenbuterol is a banned substance included in the World Anti-Doping Agency's (WADA) list of prohibited substances.
Assuntos
Clembuterol , Dopagem Esportivo , Animais , Bovinos , Cromatografia Líquida de Alta Pressão/métodos , Clembuterol/análise , Estereoisomerismo , Espectrometria de Massas em Tandem/métodosRESUMO
The use of banned substances to increase athletes' performance has been a scourge in international sport. In this sense, the World Anti-Doping Agency (WADA-AMA) has implemented a series of standards that harmonize the fight against doping. In particular, accredited WADA-AMA laboratories play an important role in the eradication of sports doping. This report shows the data obtained in the National Laboratory of Prevention and Control of Doping (LNPCD-CONADE) according to the incidence of Adverse Analytical Findings (AAF) in the 2009-2015 interval, which were obtained from the analysis of a total of 18,085 biological doping-control samples. The distribution of samples was analyzed as a function of gender, type of sport either in competition or out of competition, as well as the prevalence of AAF during the period of time analyzed and the relation regarding group of doping substance and type of sport. The data presented here were compared with those reported worldwide by the WADA-AMA and it was observed that in the cases of substances of the S1 group, the percentage reported by the LNPCD-CONADE is higher than the one reported worldwide. The opposite was observed for AAF presented by some substance from Groups S6 and S8. Likewise, a higher prevalence in the use of doping substances by male athletes (75%) is observed compared to that observed in female athletes (25%). The sports with the highest number of AAF detected in the laboratory were baseball, cycling, and athletics.
El uso de sustancias para incrementar el desarrollo deportivo de atletas ha sido un flagelo en el deporte internacional. En este sentido la Agencia Mundial Antidopaje (WADA-AMA) ha implementado una serie de estándares que permiten armonizar la lucha contra el dopaje desde diferentes aristas. Particularmente los laboratorios acreditados por la WADA-AMA forman parte importante en la erradicación de dopaje deportivo. En este informe se muestran los datos obtenidos en el Laboratorio Nacional de Prevención y Control del Dopaje (LNPCD-CONADE) de acuerdo a la incidencia de Resultados Analíticos Adversos (RAA) en el periodo 2009-2015, los cuales fueron obtenidos del análisis de un total de 18,085 muestras biológicas de control antidopaje. Se hace un análisis de la distribución de muestras de acuerdo al género, tipo de deporte ya sea en competición o fuera de competición, así como de la prevalencia de RAA durante el periodo de tiempo analizado y la relación respecto al grupo de sustancia dopante y tipo de deporte. Los datos aquí presentados se compararon con los disponibles en la página electrónica de la WADA-AMA y se observó que en los casos de sustancias del grupo S1 es más alto el porcentaje que se reporta por el LNPCD-CONADE que el reportado a nivel mundial, caso contrario se determinó para RAA que presentaron alguna sustancia del grupo S6 y S8. Así mismo se observa una mayor prevalencia en el uso de sustancias dopantes por atletas masculinos (75%) comparado con el 25 % observado en atletas femeninos. Los deportes con mayor número de RAA detectados en el laboratorio fueron béisbol, ciclismo y atletismo.
Assuntos
Atletas/psicologia , Dopagem Esportivo/prevenção & controle , Substâncias para Melhoria do Desempenho/análise , Detecção do Abuso de Substâncias , Feminino , Humanos , Masculino , México , Estudos RetrospectivosRESUMO
El uso de sustancias para incrementar el desarrollo deportivo de atletas ha sido un flagelo en el deporte internacional. En este sentido la Agencia Mundial Antidopaje (WADA-AMA) ha implementado una serie de estándares que permiten armonizar la lucha contra el dopaje desde diferentes aristas. Particularmente los laboratorios acreditados por la WADA-AMA forman parte importante en la erradicación de dopaje deportivo. En este informe se muestran los datos obtenidos en el Laboratorio Nacional de Prevención y Control del Dopaje (LNPCD-CONADE) de acuerdo a la incidencia de Resultados Analíticos Adversos (RAA) en el periodo 2009-2015, los cuales fueron obtenidos del análisis de un total de 18,085 muestras biológicas de control antidopaje. Se hace un análisis de la distribución de muestras de acuerdo al género, tipo de deporte ya sea en competición o fuera de competición, así como de la prevalencia de RAA durante el periodo de tiempo analizado y la relación respecto al grupo de sustancia dopante y tipo de deporte. Los datos aquí presentados se compararon con los disponibles en la página electrónica de la WADA-AMA y se observó que en los casos de sustancias del grupo S1 es más alto el porcentaje que se reporta por el LNPCD-CONADE que el reportado a nivel mundial, caso contrario se determinó para RAA que presentaron alguna sustancia del grupo S6 y S8. Así mismo se observa una mayor prevalencia en el uso de sustancias dopantes por atletas masculinos (75%) comparado con el 25 % observado en atletas femeninos. Los deportes con mayor número de RAA detectados en el laboratorio fueron béisbol, ciclismo y atletismo
The use of banned substances to increase athletes performance has been a scourge in international sport. In this sense, the World Anti- Doping Agency (WADA-AMA) has implemented a series of standards that harmonize the fight against doping. In particular, accredited WADA-AMA laboratories play an important role in the eradication of sports doping. This report shows the data obtained in the National Laboratory of Prevention and Control of Doping (LNPCD-CONADE) according to the incidence of Adverse Analytical Findings (AAF) in the 2009-2015 interval, which were obtained from the analysis of a total of 18,085 biological doping-control samples. The distribution of samples was analyzed as a function of gender, type of sport either in competition or out of competition, as well as the prevalence of AAF during the period of time analyzed and the relation regarding group of doping substance and type of sport. The data presented here were compared with those reported worldwide by the WADA-AMA and it was observed that in the cases of substances of the S1 group, the percentage reported by the LNPCD-CONADE is higher than the one reported worldwide. The opposite was observed for AAF presented by some substance from Groups S6 and S8. Likewise, a higher prevalence in the use of doping substances by male athletes (75%) is observed compared to that observed in female athletes (25%). The sports with the highest number of AAF detected in the laboratory were baseball, cycling, and athletics
