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• W2331195659 abstract "Designer synthetic cannabinoids like JWH-018 and AM2201 have unique clinical toxicity. Cytochrome-P450-mediated metabolism of each leads to the generation of pharmacologically active (ω)- and (ω-1)-monohydroxyl metabolites that retain high affinity for cannabinoid type-1 receptors, exhibit Δ9-THC-like effects in rodents, and are conjugated with glucuronic acid prior to excretion in human urine. Previous studies have not measured the contribution of the specific (ω-1)-monohydroxyl enantiomers in human metabolism and toxicity. This study uses a chiral liquid chromatography–tandem mass spectroscopy approach (LC–MS/MS) to quantify each specific enantiomer and other nonchiral, human metabolites of JWH-018 and AM2201 in human urine. The accuracy (average % RE = 18.6) and reproducibility (average CV = 15.8%) of the method resulted in low-level quantification (average LLQ = 0.99 ng/mL) of each metabolite. Comparisons with a previously validated nonchiral method showed strong correlation between the two approaches (average r2 = 0.89). Pilot data from human urine samples demonstrate enantiospecific excretion patterns. The (S)-isomer of the JWH-018-(ω-1)-monohydroxyl metabolite was predominantly excreted (>87%) in human urine as the glucuronic acid conjugate, whereas the relative abundance of the corresponding AM2201-(ω-1)-metabolite was low (<5%) and did not demonstrate enantiospecificity (approximate 50:50 ratio of each enantiomer). The new chiral method provides a comprehensive, targeted metabolomic approach for studying the human metabolism of JWH-018 and AM2201. Preliminary evaluations of specific enantiomeric contributions support the use of this approach in future studies designed to understand the pharmacokinetic properties of JWH-018 and/or AM2201." @default.
• W2331195659 created "2016-06-24" @default.
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• W2331195659 date "2013-09-12" @default.
• W2331195659 modified "2023-10-17" @default.
• W2331195659 title "Targeted Metabolomic Approach for Assessing Human Synthetic Cannabinoid Exposure and Pharmacology" @default.
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• W2331195659 doi "https://doi.org/10.1021/ac4024704" @default.
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