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Matsuo T, Ogawa T, Iwai M, Kubo K, Kondo F, Seno H. Development of an LC-MS/MS method for the determination of five psychoactive drugs in postmortem urine by optimization of enzymatic hydrolysis of glucuronide conjugates. Forensic Toxicol 2024:10.1007/s11419-024-00685-1. [PMID: 38557936 DOI: 10.1007/s11419-024-00685-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 02/27/2024] [Indexed: 04/04/2024]
Abstract
PURPOSE Toxicological analyses of biological samples play important roles in forensic and clinical investigations. Ingested drugs are excreted in urine as conjugates with endogenous substances such as glucuronic acid; hydrolyzing these conjugates improves the determination of target drugs by liquid chromatography-tandem mass spectrometry (LC-MS/MS). In this study, we sought to improve the enzymatic hydrolysis of glucuronide conjugates of five psychoactive drugs (11-nor-9-carboxy-Δ9-tetrahydrocannabinol, oxazepam, lorazepam, temazepam, and amitriptyline). METHODS The efficiency of enzymatic hydrolysis of glucuronide conjugates in urine was optimized by varying temperature, enzyme volume, and reaction time. The hydrolysis was performed directly on extraction columns. This analysis method using LC-MS/MS was applied to forensic autopsy samples after thorough validation. RESULTS We found that the recombinant β-glucuronidase B-One® quantitatively hydrolyzed these conjugates within 3 min at room temperature directly on extraction columns. This on-column method saved time and eliminated the loss of valuable samples during transfer to the extraction column. LC-MS/MS-based calibration curves processed with this method showed good linearity, with r2 values exceeding 0.998. The intra- and inter-day accuracies and precisions of the method were 93.0-109.7% and 0.8-8.8%, respectively. The recovery efficiencies were in the range of 56.1-104.5%. Matrix effects were between 78.9 and 126.9%. CONCLUSIONS We have established an LC-MS/MS method for five psychoactive drugs in urine after enzymatic hydrolysis of glucuronide conjugates directly on extraction columns. The method was successfully applied to forensic autopsy samples. The established method will have broad applications, including forensic and clinical toxicological investigations.
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Affiliation(s)
- Tomohito Matsuo
- Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan.
- Poison Analysis Center, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan.
| | - Tadashi Ogawa
- Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Poison Analysis Center, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Masae Iwai
- Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Poison Analysis Center, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Katsutoshi Kubo
- Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Oral Pathology/Forensic Odontology, Aichi Gakuin University School of Dentistry, 1-100 Kusumoto-Cho, Chikusa-Ku, Nagoya, Aichi, 464-8650, Japan
| | - Fumio Kondo
- Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, 1200 Matsumoto‑cho, Kasugai, Aichi, 487‑8501, Japan
| | - Hiroshi Seno
- Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
- Poison Analysis Center, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
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2
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Wang L, Wang X, Li W, Liu J, Yao X, Wei Z, Yun K. Stability of diazepam's phase II metabolites in dried blood spots on filter paper. J Pharm Biomed Anal 2024; 240:115921. [PMID: 38157738 DOI: 10.1016/j.jpba.2023.115921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/09/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024]
Abstract
Phase II metabolites play an important role in diazepam-related cases. The study aimed to assess the stability of diazepam's phase II metabolites in dried blood spots on filter paper. METHODS A piece of filter paper was spotted with 100 µL of whole blood (added 1% sodium fluoride as needed) obtained from participant who received 5 mg diazepam orally, air dried for 2 h at room temperature, and then stored at different conditions. Whole spots were cut at 0.1 cm from the outer edge of blood spots at post-consumption time-points of prior (zero), 5, 16, 35, 61, 120 days and 1, 1.5 years. Analytes were extracted with methanol/water mixture (8:2, v/v) and determined using HPLC-MS/MS. Decomposition rules were analyzed by a statistical software "SPSS". RESULTS Temazepam glucuronide remained stable (0.5-18.6% loss) at 20 ℃ and at 20 ℃ with 1% sodium fluoride for 16 days, while it was unstable after 5 days at 4 ℃ (21.1-26.2% loss) and - 20 ℃ (28.9 - 34.4% loss). After 35 days, temazepam glucuronide concentrations began to fluctuate significantly under all conditions, and an obvious increase (290.4-355.1%) was observed in 1.5 years. Oxazepam glucuronide was always unstable after 5 days, the percentage loss was even 100% when it was stored for 61 days and 1.5 years. CONCLUSIONS Dried blood spots on ordinary filter paper are recommended to be stored at 20 ℃ or 20 ℃ with 1% sodium fluoride within 16 days. Samples should be analyzed immediately or stored in sterile and dry media.
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Affiliation(s)
- Lele Wang
- School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Medicine in Shanxi Province, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong 030600, Shanxi, China
| | - Xuezhi Wang
- School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Medicine in Shanxi Province, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong 030600, Shanxi, China; Department of Pathology, Air Force Medical Center, PLA, 100142, Beijing, China
| | - Wenyue Li
- School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Medicine in Shanxi Province, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong 030600, Shanxi, China; Guangdong Nantian Institute of Forensic Science, 518003 Shenzhen, Beijing, China
| | - Jiajia Liu
- School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Medicine in Shanxi Province, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong 030600, Shanxi, China
| | - Xiukun Yao
- School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Medicine in Shanxi Province, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong 030600, Shanxi, China
| | - Zhiwen Wei
- School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Medicine in Shanxi Province, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong 030600, Shanxi, China.
| | - Keming Yun
- School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Medicine in Shanxi Province, Jinzhong 030600, Shanxi, China; Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong 030600, Shanxi, China.
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3
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Berlato DG, Bezerra Pacheco AL, Ugalde GA, Reginato FZ, Saldanha GDA, Oliveira TFD, Eller S, Bairros AVD. Dispersive liquid-liquid microextraction (DLLME) for determination of tricyclic antidepressants in whole blood and plasma samples and analysis by liquid chromatography with diode array detector (LC-DAD). Toxicol Mech Methods 2024; 34:189-202. [PMID: 37830174 DOI: 10.1080/15376516.2023.2269236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023]
Abstract
Microextractions have been developed for the tricyclic antidepressants (TCAs) analysis in biological matrices, including dispersive liquid-liquid microextraction (DLLME). The proposed DLLME employed 490 µL of biological sample (whole blood or plasma), which were added 15 mg of NaCl, 10 µL of medazepam as internal standard (10 µg/mL) and 100 µL of 2 M NaOH. This mixture was homogenized by vortex (2800 rpm/10 s) and 400 µL of hexane (extractor solvent) with 600 µL of methanol (dispersing solvent) were added to the sample. After the vortex step (2800 rpm/5 s), an ultrasonic bath for 300 s was employed. Then, this content was centrifuged (10 min/10000 rpm), organic phase was collected and dried under air flow. After, 30 µL of the mobile phase was used for resuspension and 20 µL is injected into LC-DAD. This method was optimized and fully validated according to UNODC and SWGTOX guidelines, reaching limits of detection equivalent to analytical methodologies that employ mass spectrometry (MS). Also, it was applied in real cases involving suspected exposure to TCAs. So, the developed DLLME for the determination of TCAs in whole blood and plasma samples proved to be a simple, reliable, robust and reproducible method that can be used in toxicology and clinical laboratories.
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Affiliation(s)
- Dener Gomes Berlato
- Nucleous Applied to Toxicology (NAT), Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Santa Maria, Brazil
| | - André Lucas Bezerra Pacheco
- Nucleous Applied to Toxicology (NAT), Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Santa Maria, Brazil
| | - Gustavo Andrade Ugalde
- Nucleous Applied to Toxicology (NAT), Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Santa Maria, Brazil
| | - Fernanda Ziegler Reginato
- Nucleous Applied to Toxicology (NAT), Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Santa Maria, Brazil
| | - Geovane de Almeida Saldanha
- Nucleous Applied to Toxicology (NAT), Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Santa Maria, Brazil
| | - Tiago Franco de Oliveira
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, RS, Brazil
| | - Sarah Eller
- Graduate Program in Health Sciences, Federal University of Health Sciences of Porto Alegre, RS, Brazil
| | - André Valle de Bairros
- Nucleous Applied to Toxicology (NAT), Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Santa Maria, Brazil
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Othman AA, Simpson BS, Jaunay EL, White JM, Bade R, Gerber C. A method for improved detection of 8-isoprostaglandin F 2α/β and benzodiazepines in wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158061. [PMID: 35985578 DOI: 10.1016/j.scitotenv.2022.158061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/28/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Wastewater-based epidemiology is a tool incorporating biomarker analysis that can be used to monitor the health status of a population. Indicators of health include endogenous oxidative stress biomarkers and hormones, or exogenous such as alcohol and nicotine. 8-Iso-prostaglandin F2α/β is a biomarker of endogenous metabolism that can be used to measure oxidative stress in a community. Benzodiazepines are a harmful subclass of anxiolytics either prescribed or sourced illegally. The analysis of oxidative stress markers and uptake of benzodiazepines in wastewater may provide information about distress in the community. A method has been applied to detect 8-isoPGF2α/β and the illicit benzodiazepines clonazolam, flubromazolam and flualprazolam in addition to other prescribed benzodiazepines in wastewater. These substances have been sold as counterfeit pharmaceutical products, such as Xanax, which was formulated to include alprazolam. Deconjugation was initially performed on wastewater samples, followed by liquid-liquid extraction for isoprostanes and solid phase extraction for benzodiazepines to determine the total levels of these analytes. Limits of quantification were in the range of 0.5-2 ng/L for all the analytes except 8-isoPGF2α/β which was 50 ng/L. Stability, recovery and matrix effect studies were also conducted. Finally, this method was applied to influent wastewater from South Australia which showed the prevalence of 8-isoPGF2α/β and benzodiazepines.
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Affiliation(s)
- Ahmed Adel Othman
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Bradley S Simpson
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Emma L Jaunay
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Jason M White
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia
| | - Richard Bade
- Queensland Alliance for Environmental Health Sciences (QAEHS), the University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Cobus Gerber
- University of South Australia, Clinical and Health Sciences (CHS), Health and Biomedical Innovation, South Australia 5000, Australia.
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Okoye NC, Greene DN, Johnson-Davis KL. Is the Confirmatory Test Always Right? Sometimes Immunoassays Know What They Are Talking About. J Appl Lab Med 2021; 7:607-612. [PMID: 34568949 DOI: 10.1093/jalm/jfab097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 08/09/2021] [Indexed: 11/15/2022]
Affiliation(s)
- Nkemakonam C Okoye
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Dina N Greene
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA; Kaiser Permanente Washington Laboratories, Renton, WA, USA
| | - Kamisha L Johnson-Davis
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA.,ARUP Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, UT, USA
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6
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Zhao T, Du L, Zhang Z, Li N, Wang M, Ren Q. A poly(N,N-dimethylaminoethyl methacrylate-co-ethylene glycol dimethacrylate) monolith for direct solid-phase extraction of benzodiazepines from undiluted human urine. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:3924-3932. [PMID: 32720657 DOI: 10.1039/d0ay01025a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel polymeric monolith using N,N-dimethylaminoethyl methacrylate as the monomer and ethylene glycol dimethacrylate as the crosslinker was successfully synthesized in a syringe and applied for direct solid-phase extraction of four benzodiazepines (bromazepam, triazolam, midazolam and diazepam) from undiluted urine samples prior to high performance liquid chromatography. The monolith was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and nitrogen adsorption-desorption experiments. Moreover, extraction parameters, including loading, washing and eluting conditions were optimized. Under the optimized conditions, the proposed method obtained linear ranges of 2.0-500 ng mL-1 with correlation coefficients (r) higher than 0.9997. The limits of detection (S/N = 3) and limits of quantification (S/N = 10) were 0.4-0.6 ng mL-1 and 1.4-2.0 ng mL-1, respectively. The recoveries at three spiked levels ranged from 83.7% to 103% with the intra- and inter-day precisions from 0.6-7.6% to 2.7-9.8%. The present monolith allowed direct loading of crude urine samples without any filtration or dilution step. Besides, the sorbent offered an enhancement factor of 16.7-20.6 and was stable enough for ten replicate cycles of extraction/desorption of urine samples. The developed method presented an alternative strategy for the accurate and convenient determination of benzodiazepines in urine samples.
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Affiliation(s)
- Tengwen Zhao
- School of Public Health, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian, Tangshan 063210, Hebei, China.
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7
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Large scale consumption monitoring of benzodiazepines and z-drugs by hair analysis. J Pharm Biomed Anal 2020; 183:113151. [DOI: 10.1016/j.jpba.2020.113151] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/24/2020] [Accepted: 02/05/2020] [Indexed: 02/06/2023]
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8
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Study on the Pharmacokinetics of Diazepam and Its Metabolites in Blood of Chinese People. Eur J Drug Metab Pharmacokinet 2020; 45:477-485. [DOI: 10.1007/s13318-020-00614-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Sitasuwan P, Melendez C, Marinova M, Spruill M, Lee LA. Comparison of Purified β-glucuronidases in Patient Urine Samples Indicates a Lack of Correlation Between Enzyme Activity and Drugs of Abuse Metabolite Hydrolysis Efficiencies Leading to Potential False Negatives. J Anal Toxicol 2018; 43:221-227. [DOI: 10.1093/jat/bky082] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 07/28/2018] [Accepted: 09/19/2018] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - Margarita Marinova
- Frank Reidy Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA
| | | | - L Andrew Lee
- Integrated Micro-Chromatography Systems, LLC, Irmo, SC, USA
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10
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Johnson-Davis KL. Opiate & Benzodiazepine Confirmations: To Hydrolyze or Not to Hydrolyze is the Question. ACTA ACUST UNITED AC 2017; 2:564-572. [DOI: 10.1373/jalm.2016.022947] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 10/27/2017] [Indexed: 11/06/2022]
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11
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An atmospheric pressure chemical ionisation liquid chromatographic–tandem mass spectrometry method for the analysis of benzodiazepines in urine. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1064:22-27. [DOI: 10.1016/j.jchromb.2017.08.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 08/09/2017] [Accepted: 08/12/2017] [Indexed: 11/20/2022]
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12
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Dinis-Oliveira RJ. Metabolic profile of oxazepam and related benzodiazepines: clinical and forensic aspects. Drug Metab Rev 2017; 49:451-463. [PMID: 28903606 DOI: 10.1080/03602532.2017.1377223] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Anxiolytic drugs, namely benzodiazepines, are the most commonly used psychoactive substances since anxiety disorders are prevalent mental disorders particularly in the Western world. Oxazepam is a short-acting benzodiazepine and one of the most frequently prescribed anxiolytic drugs. It is also the active metabolite of a wide range of other benzodiazepines, such as diazepam, ketazolam, temazepam, chlordiazepoxide, demoxazepam, halazepam, medazepam, prazepam, pinazepam, and chlorazepate. Therefore, relevant clinical and forensic outocomes may arise, namely those related to interference in driving performance. It is clinically available as a racemic formulation, with S-enantiomer being more active than R-enantiomer. In humans, it is mainly polimorphically metabolized by glucuronide conjugation at the 3-carbon hydroxyl group, yielding stable diastereomeric glucuronides (R- and S-oxazepam glucuronide). Relevant metabolic and stereoselective interspecies differences have been reported. In this work, the pharmacokinetics of oxazepam with particular focus on metabolic pathways is fully reviewed. Moreover, the metabolic profile of other prescribed benzodiazepines that produce oxazepam as a metabolite is also discussed. It is aimed that knowing the metabolism of oxazepam and related benzodiazepines may lead to the development of new analytical strategies for its early detection and help in further toxicological and clinical interpretations.
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Affiliation(s)
- Ricardo Jorge Dinis-Oliveira
- a IINFACTS - Institute of Research and Advanced Training in Health Sciences and Technologies, Department of Sciences , University Institute of Health Sciences (IUCS), CESPU, CRL , Gandra , Portugal.,b UCIBIO-REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy , University of Porto , Porto , Portugal.,c Department of Public Health and Forensic Sciences, and Medical Education, Faculty of Medicine , University of Porto , Porto , Portugal
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Yao W, Fan Z, Zhang S. Poly(methacrylic acid-ethylene glycol dimethacrylate-N-vinylcarbazole) monolithic column for the enrichment of trace benzodiazepines from urine and beer samples. J Sep Sci 2017; 40:1369-1376. [DOI: 10.1002/jssc.201601263] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 01/08/2017] [Accepted: 01/08/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Weixuan Yao
- College of Chemistry and Materials; Shanxi Normal University; Linfen P.R. China
- Department of Criminal Science and Technology; Zhejiang Police College; Hangzhou P.R. China
| | - Zhefeng Fan
- College of Chemistry and Materials; Shanxi Normal University; Linfen P.R. China
| | - Suling Zhang
- College of Materials and Environmental Engineering; Hangzhou Dianzi University; Hangzhou P.R. China
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Nazaripour A, Yamini Y, Ebrahimpour B, Fasihi J. Automated hollow-fiber liquid-phase microextraction followed by liquid chromatography with mass spectrometry for the determination of benzodiazepine drugs in biological samples. J Sep Sci 2016; 39:2595-603. [DOI: 10.1002/jssc.201600015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 04/18/2016] [Accepted: 04/23/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ali Nazaripour
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
| | - Yadollah Yamini
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
| | - Behnam Ebrahimpour
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
| | - Javad Fasihi
- Nuclear Science and Technology Research Institute, AEOI; Tehran Iran
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15
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Jiang F, Rao Y, Wang R, Johansen SS, Ni C, Liang C, Zheng S, Ye H, Zhang Y. Sensitive, automatic method for the determination of diazepam and its five metabolites in human oral fluid by online solid-phase extraction and liquid chromatography with tandem mass spectrometry. J Sep Sci 2016; 39:1873-83. [DOI: 10.1002/jssc.201600107] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/04/2016] [Accepted: 03/10/2016] [Indexed: 01/10/2023]
Affiliation(s)
- Fengli Jiang
- Department of Forensic Medicine, School of Basic Medical Sciences; Fudan University; Shanghai P. R. China
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Institute of Forensic Science; Shanghai P. R. China
| | - Yulan Rao
- Department of Forensic Medicine, School of Basic Medical Sciences; Fudan University; Shanghai P. R. China
| | - Rong Wang
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Institute of Forensic Science; Shanghai P. R. China
| | - Sys Stybe Johansen
- Section of Forensic Chemistry, Department of Forensic Medicine, Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
| | - Chunfang Ni
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Institute of Forensic Science; Shanghai P. R. China
| | - Chen Liang
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Institute of Forensic Science; Shanghai P. R. China
| | - Shuiqing Zheng
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Institute of Forensic Science; Shanghai P. R. China
| | - Haiying Ye
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Institute of Forensic Science; Shanghai P. R. China
| | - Yurong Zhang
- Shanghai Key Laboratory of Crime Scene Evidence; Shanghai Institute of Forensic Science; Shanghai P. R. China
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de Bairros AV, de Almeida RM, Pantaleão L, Barcellos T, Silva SME, Yonamine M. Determination of low levels of benzodiazepines and their metabolites in urine by hollow-fiber liquid-phase microextraction (LPME) and gas chromatography–mass spectrometry (GC–MS). J Chromatogr B Analyt Technol Biomed Life Sci 2015; 975:24-33. [DOI: 10.1016/j.jchromb.2014.10.040] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 10/24/2014] [Accepted: 10/29/2014] [Indexed: 10/24/2022]
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17
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Morris AA, Chester SA, Strickland EC, McIntire GL. Rapid Enzymatic Hydrolysis Using a Novel Recombinant β-Glucuronidase in Benzodiazepine Urinalysis. J Anal Toxicol 2014; 38:610-4. [DOI: 10.1093/jat/bku083] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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18
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Hegstad S, Hermansson S, Betnér I, Spigset O, Falch BMH. Screening and quantitative determination of drugs of abuse in diluted urine by UPLC–MS/MS. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 947-948:83-95. [DOI: 10.1016/j.jchromb.2013.12.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 12/04/2013] [Accepted: 12/14/2013] [Indexed: 10/25/2022]
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Malik-Wolf B, Vorce S, Holler J, Bosy T. Evaluation of Abalone -Glucuronidase Substitution in Current Urine Hydrolysis Procedures. J Anal Toxicol 2014; 38:171-6. [DOI: 10.1093/jat/bku003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Wang R, Wang X, Liang C, Ni C, Xiong L, Rao Y, Zhang Y. Direct determination of diazepam and its glucuronide metabolites in human whole blood by μElution solid-phase extraction and liquid chromatography–tandem mass spectrometry. Forensic Sci Int 2013; 233:304-11. [DOI: 10.1016/j.forsciint.2013.10.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Revised: 09/25/2013] [Accepted: 10/05/2013] [Indexed: 10/26/2022]
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McMillin GA, Slawson MH, Marin SJ, Johnson-Davis KL. Demystifying Analytical Approaches for Urine Drug Testing to Evaluate Medication Adherence in Chronic Pain Management. J Pain Palliat Care Pharmacother 2013; 27:322-39. [DOI: 10.3109/15360288.2013.847889] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Extending the detection window of diazepam by directly analyzing its glucuronide metabolites in human urine using liquid chromatography–tandem mass spectrometry. J Chromatogr A 2012; 1268:29-34. [DOI: 10.1016/j.chroma.2012.10.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 10/08/2012] [Accepted: 10/09/2012] [Indexed: 11/19/2022]
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Affiliation(s)
- T. A. Brettell
- Department of Chemical and Physical Sciences, Cedar Crest College, 100 College Drive, Allentown, Pennsylvania 18104-6196, United States
| | - J. M. Butler
- Biochemical Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8312, United States
| | - J. R. Almirall
- Department of Chemistry and Biochemistry and International Forensic Research Institute, Florida International University, University Park, Miami, Florida 33199, United States
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Fu S, Molnar A, Bowron P, Lewis J, Wang H. Reduction of temazepam to diazepam and lorazepam to delorazepam during enzymatic hydrolysis. Anal Bioanal Chem 2011; 400:153-64. [DOI: 10.1007/s00216-011-4723-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 01/18/2011] [Accepted: 01/25/2011] [Indexed: 10/18/2022]
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