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4种酰胺类合成大麻素在人肝微粒体中Ⅰ相代谢规律研究

Phase I metabolism of four amide synthetic cannabinoids in human liver microsomes

  • 摘要: 研究4种近来滥用的酰胺类合成大麻素ADB-4en-PINACA、4CN-CUMYL-BUTINACA、5F-EMB-PICA和4F-MDMB-BUTICA的体外人肝微粒体代谢规律。取人肝微粒体,加合成大麻素使成1 mg/mL,模拟人体代谢过程孵育10 min、60 min或3 h,用液相色谱-四极杆-飞行时间串联质谱(LC-QTOF-MS)分析技术检测并鉴定代谢产物的结构,探索代谢途径。结果显示,5F-EMB-PICA、4F-MDMB-BUTICA、ADB-4en-PINACA和4CN-CUMYL-BUTINACA存在羟基化、羧基化、N-脱烷基和酯水解等27种Ⅰ相代谢途径,其中主要的Ⅰ相代谢途径为酯水解、双键氧化成邻二醇、氧化脱氟羧基化、单羟基化(烷基侧链或吲哚/吲唑环)和N-脱烷基。本研究可为司法鉴定4种酰胺类合成大麻素的滥用和污水毒情评估提供潜在的检测标志物。

     

    Abstract: This study was performed to determine the metabolic profile of four amide synthetic cannabinoids that recently abused, i.e., ADB-4en-PINACA, 4CN-CUMYL-BUTINACA, 5F-EMB-PICA and 4F-MDMB-BUTICA, in human liver microsomes (HLMs). The four amide synthetic cannabinoids were added to the microsomal incubation model, being incubated for 10 min, 60 min or 3 h to simulate human hepatic metabolism.Liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) analytical instrument was employed to determine and speculate the structure of phase I metabolites and their possible metabolic pathways.The results showed that there were 27 phase I metabolic pathways for the four amide synthetic cannabinoids, including hydroxylation, carboxylation, N-dealkylation and ester hydrolysis, with the main phase I metabolic pathways of ester hydrolysis, dihydrodiol (pentenyl tail), oxidative defluorination to carboxylic acid, monohydroxylation (alkyl side chain or indole/indazole ring) and N-dealkylation.The results of this study may provide potential detection markers for forensic identification and sewage abuse assessment of the four amide synthetic cannabinoids.

     

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