PMID- 29425299 OWN - NLM STAT- MEDLINE DCOM- 20181015 LR - 20181015 IS - 1945-2403 (Electronic) IS - 0146-4760 (Linking) VI - 42 IP - 5 DP - 2018 Jun 1 TI - Stability of Ethyl Glucuronide, Ethyl Sulfate, Phosphatidylethanols and Fatty Acid Ethyl Esters in Postmortem Human Blood. PG - 346-352 LID - 10.1093/jat/bky010 [doi] AB - The lack of systematic studies on the stability of ethanol's non-oxidative metabolites in postmortem specimens restricts their use in forensic cases. This study aimed to compare the stability of ethyl glucuronide (EtG), ethyl sulfate (EtS), phosphatidylethanols (PEths) and fatty acid ethyl esters (FAEEs) in postmortem human blood. Three groups were established based on the level and source of ethanol: the blank group, the ethanol-spiked group and the ethanol-positive group. Each group contained six blood samples from different corpses. The samples in each group were placed at 37, 25, 4 and -20 degrees C. Every 24 h for 7 days, 50 muL was collected from each sample. The levels of EtG, EtS, PEths and FAEEs were determined by liquid chromatography-mass spectrometry, and their stability was evaluated. EtG was not detected in the blank group, but it was found in samples in the ethanol-spiked group placed at 37 degrees C, and it was degraded in the ethanol-positive group at 37 and 25 degrees C. EtS showed no change in any of the groups. PEths were not detected in the blank group, but formation was found in the ethanol-spiked group at all temperatures. In the ethanol-positive group, PEth levels fluctuated at 37 degrees C, decreased at 25 degrees C and increased at -20 degrees C. FAEEs were generated in the blank group and in the ethanol-spiked group at all temperatures. In the ethanol-positive group, FAEEs were degraded at 37 and 25 degrees C but were generated at 4 and -20 degrees C. EtS is a reliable biomarker of ethanol consumption, and EtG could be used as a biomarker at low temperatures (4 and -20 degrees C), but PEths and FAEEs are not appropriate biomarkers of ethanol consumption. FAU - Liu, Yuming AU - Liu Y AD - Zhongshan Hospital, Fudan University, 180 Fenglin Road, Xuhui District, Shanghai 200032, PR China. FAU - Zhang, Xinyu AU - Zhang X AD - Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China. AD - Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China. FAU - Li, Jiaolun AU - Li J AD - Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China. FAU - Huang, Zhibin AU - Huang Z AD - Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China. FAU - Lin, Zebin AU - Lin Z AD - Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China. FAU - Wang, Jingru AU - Wang J AD - Obstetrics and Gynecology Hospital Affiliated to Fudan University, Shanghai 200011, PR China. FAU - Zhang, Chengqiang AU - Zhang C AD - Obstetrics and Gynecology Hospital Affiliated to Fudan University, Shanghai 200011, PR China. FAU - Rao, Yulan AU - Rao Y AD - Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai 200032, PR China. LA - eng PT - Comparative Study PT - Journal Article PL - England TA - J Anal Toxicol JT - Journal of analytical toxicology JID - 7705085 RN - 0 (Biomarkers) RN - 0 (Fatty Acids) RN - 0 (Glucuronates) RN - 0 (Glycerophospholipids) RN - 0 (Solvents) RN - 0 (Sulfuric Acid Esters) RN - 0 (phosphatidylethanol) RN - 17685-04-0 (ethyl glucuronide) RN - 3K9958V90M (Ethanol) RN - K0FO4VFA7I (diethyl sulfate) SB - IM MH - Accidents, Traffic/mortality MH - Alcohol Drinking/*blood MH - Biomarkers/blood MH - Cadaver MH - China MH - Chromatography, High Pressure Liquid MH - Cold Temperature MH - Ethanol/chemistry MH - Fatty Acids/*blood/chemistry MH - Forensic Toxicology/*methods MH - Glucuronates/*blood/chemistry MH - Glycerophospholipids/*blood/chemistry MH - Hot Temperature MH - Humans MH - Limit of Detection MH - Reproducibility of Results MH - Solvents/chemistry MH - Spectrometry, Mass, Electrospray Ionization MH - Substance Abuse Detection/*methods MH - Sulfuric Acid Esters/*blood/chemistry EDAT- 2018/02/10 06:00 MHDA- 2018/10/16 06:00 CRDT- 2018/02/10 06:00 PHST- 2017/10/08 00:00 [received] PHST- 2018/02/10 06:00 [pubmed] PHST- 2018/10/16 06:00 [medline] PHST- 2018/02/10 06:00 [entrez] AID - 4841962 [pii] AID - 10.1093/jat/bky010 [doi] PST - ppublish SO - J Anal Toxicol. 2018 Jun 1;42(5):346-352. doi: 10.1093/jat/bky010.