PMID- 26487642 OWN - NLM STAT- MEDLINE DCOM- 20160826 LR - 20220318 IS - 1945-2403 (Electronic) IS - 0146-4760 (Linking) VI - 40 IP - 1 DP - 2016 Jan-Feb TI - The Potential of Various Living Tissues for Monitoring Clenbuterol Abuse in Food-Producing Chinese Simmental Beef Cattle. PG - 72-7 LID - 10.1093/jat/bkv118 [doi] AB - We aimed to evaluate whether living tissues such as urine, plasma and hair were suitable for monitoring clenbuterol (CL) abuse after its subchronic administration of a growth-promoting dose to the Chinese Simmental beef cattle. Eight male, white and red pied Chinese Simmental beef cattle were involved in the experiment, and the CL dose was 16 microg/kg BW/day. Liquid chromatography tandem mass spectrometry (LC-MS-MS) was used to determine CL residues in different tissues, and the addition of D9-clenbuterol internal standard was applied to increase determination accuracy. The recovery of plasma, urine, hair and in vivo tissues was 88.5-114.2, 83.9-114.3, 88.6-116.9 and 85.3-121.7%, respectively. The results showed that CL residue concentrations in the plasma, on Days 14 after withdrawal and later, were lower than the limit of detection (LOD) (0.06 ng/mL) and CL residue in urine was lower than LOD (0.16 ng/mL) 42 days after treatment. CL significantly accumulated in the white and red hair and maintained more than 7.19 +/- 2.19 pg/mg within the early withdrawal period of 70 days. A large number of CL were determined in all tested biological tissues, in which residues were higher than the maximum residue limits (MRLs) after dietary administration of CL for 21 days and pre-slaughter withdrawal period of approximately 6 h. A particular concern is the slow depletion of residues of CL in some tissues like gluteus and liver still exceeding theirs MRLs, respectively, on Days 14 or 28 days after withdrawal. Our study indicated that plasma and urine could be available for monitoring CL abuse only within a short period of time. However, hair (including light-pigmented) as a target matrix can be selected to perform the long-period monitor of CL. CI - (c) The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com. FAU - Li, Lijun AU - Li L AD - Institute of Animal Science, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, P.R. China Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture, Beijing, P.R. China CAAS-ICRAF Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing, P.R. China. FAU - Tang, Chaohua AU - Tang C AD - Institute of Animal Science, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, P.R. China Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture, Beijing, P.R. China CAAS-ICRAF Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing, P.R. China. FAU - Zhang, Junmin AU - Zhang J AD - Institute of Animal Science, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, P.R. China Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture, Beijing, P.R. China CAAS-ICRAF Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing, P.R. China zhjmxms@sina.com. FAU - Zhao, Qingyu AU - Zhao Q AD - Institute of Animal Science, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, P.R. China Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture, Beijing, P.R. China CAAS-ICRAF Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing, P.R. China. FAU - Zhang, Kai AU - Zhang K AD - Institute of Animal Science, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, P.R. China Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China, Ministry of Agriculture, Beijing, P.R. China CAAS-ICRAF Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing, P.R. China. LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151020 PL - England TA - J Anal Toxicol JT - Journal of analytical toxicology JID - 7705085 RN - 0 (Adrenergic beta-Agonists) RN - XTZ6AXU7KN (Clenbuterol) SB - IM MH - Adrenergic beta-Agonists/*analysis/blood/urine MH - Animals MH - Cattle MH - Chromatography, High Pressure Liquid MH - Clenbuterol/*analysis/blood/urine MH - Drug Residues/*analysis MH - Foodborne Diseases/prevention & control MH - Hair/*chemistry MH - Limit of Detection MH - Male MH - Red Meat/toxicity MH - Substance Abuse Detection/*methods/*veterinary MH - Tandem Mass Spectrometry EDAT- 2015/10/22 06:00 MHDA- 2016/08/27 06:00 CRDT- 2015/10/22 06:00 PHST- 2015/10/22 06:00 [entrez] PHST- 2015/10/22 06:00 [pubmed] PHST- 2016/08/27 06:00 [medline] AID - bkv118 [pii] AID - 10.1093/jat/bkv118 [doi] PST - ppublish SO - J Anal Toxicol. 2016 Jan-Feb;40(1):72-7. doi: 10.1093/jat/bkv118. Epub 2015 Oct 20.