PMID- 31480464 OWN - NLM STAT- MEDLINE DCOM- 20200130 LR - 20200225 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 24 IP - 17 DP - 2019 Aug 31 TI - Determination of N-Carbamylglutamate in Feeds and Animal Products by High Performance Liquid Chromatography Tandem Mass Spectrometry. LID - 10.3390/molecules24173172 [doi] LID - 3172 AB - N-carbamylglutamate (NCG), a synthetic analogue of N-acetylglutamate, is an activator of blood ammonia conversion and endogenous arginine synthesis. Here, we established an accurate quantitative determination of NCG in feeds, animal tissues, and body fluids using the high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS). The sample pretreatment procedures included extraction with 0.5% of formic acid in water/methanol (80/20, v/v), and purification using an anionic solid phase extraction cartridge. Satisfactory separation of NCG was achieved in 20 min with the application of an Atlantis T3 column, and a confirmative detection of NCG was ensured by multiple reaction monitoring of positive ions. NCG spiked in feeds, tissues, and body fluids were evaluated in regard to linearity, sensitivity, recovery, and repeatability. Recoveries for different sample matrices were in the range of 88.12% to 110.21% with relative standard deviations (RSDs) less than 8.8%. Limits of quantification were within the range of 0.012 to 0.073 mg kg(-1) and 0.047 to 0.077 mug mL(-1) for solid and liquid samples, respectively. This study will provide a solid foundation for the evaluation of availability and metabolic mechanism of NCG in animals. FAU - Ma, Yonghang AU - Ma Y AD - State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China. FAU - Zeng, Zhengcheng AU - Zeng Z AD - State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China. FAU - Kong, Lingchang AU - Kong L AD - State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China. FAU - Chen, Yuanxin AU - Chen Y AD - State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China. FAU - He, Pingli AU - He P AD - State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China. hepingli@cau.edu.cn. LA - eng GR - 2018YFD0500402/The National Key Research and Development Program of China/ PT - Journal Article DEP - 20190831 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 0 (Glutamates) RN - 0 (Solvents) RN - 1188-38-1 (N-carbamylglutamate) SB - IM MH - Animal Feed/*analysis MH - Animals MH - Cattle MH - Chromatography, High Pressure Liquid/*methods MH - Glutamates/*analysis/chemistry MH - Hydrogen-Ion Concentration MH - Limit of Detection MH - Solvents MH - Swine MH - Tandem Mass Spectrometry/*methods PMC - PMC6749331 OTO - NOTNLM OT - HPLC-MS/MS OT - N-carbamylglutamate OT - animal products OT - feeds OT - milk COIS- The authors declare no conflict of interest. EDAT- 2019/09/05 06:00 MHDA- 2020/01/31 06:00 PMCR- 2019/08/31 CRDT- 2019/09/05 06:00 PHST- 2019/07/18 00:00 [received] PHST- 2019/08/23 00:00 [revised] PHST- 2019/08/30 00:00 [accepted] PHST- 2019/09/05 06:00 [entrez] PHST- 2019/09/05 06:00 [pubmed] PHST- 2020/01/31 06:00 [medline] PHST- 2019/08/31 00:00 [pmc-release] AID - molecules24173172 [pii] AID - molecules-24-03172 [pii] AID - 10.3390/molecules24173172 [doi] PST - epublish SO - Molecules. 2019 Aug 31;24(17):3172. doi: 10.3390/molecules24173172.