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Dutta S, Shukla D. Characterization of binding kinetics and intracellular signaling of new psychoactive substances targeting cannabinoid receptor using transition-based reweighting method. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.09.29.560261. [PMID: 37873328 PMCID: PMC10592854 DOI: 10.1101/2023.09.29.560261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
New psychoactive substances (NPS) targeting cannabinoid receptor 1 pose a significant threat to society as recreational abusive drugs that have pronounced physiological side effects. These greater adverse effects compared to classical cannabinoids have been linked to the higher downstream β-arrestin signaling. Thus, understanding the mechanism of differential signaling will reveal important structure-activity relationship essential for identifying and potentially regulating NPS molecules. In this study, we simulate the slow (un)binding process of NPS MDMB-Fubinaca and classical cannabinoid HU-210 from CB1 using multi-ensemble simulation to decipher the effects of ligand binding dynamics on downstream signaling. The transition-based reweighing method is used for the estimation of transition rates and underlying thermodynamics of (un)binding processes of ligands with nanomolar affinities. Our analyses reveal major interaction differences with transmembrane TM7 between NPS and classical cannabinoids. A variational autoencoder-based approach, neural relational inference (NRI), is applied to assess the allosteric effects on intracellular regions attributable to variations in binding pocket interactions. NRI analysis indicate a heightened level of allosteric control of NPxxY motif for NPS-bound receptors, which contributes to the higher probability of formation of a crucial triad interaction (Y7.53-Y5.58-T3.46) necessary for stronger β-arrestin signaling. Hence, in this work, MD simulation, data-driven statistical methods, and deep learning point out the structural basis for the heightened physiological side effects associated with NPS, contributing to efforts aimed at mitigating their public health impact.
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Affiliation(s)
- Soumajit Dutta
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
| | - Diwakar Shukla
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, 61801
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2
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Zimmerman-Federle H, Ren G, Dowling S, Warren C, Rusyniak D, Avera R, Manicke NE. Plasma drug screening using paper spray mass spectrometry with integrated solid phase extraction. Drug Test Anal 2024. [PMID: 38584344 DOI: 10.1002/dta.3687] [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: 01/08/2024] [Revised: 03/04/2024] [Accepted: 03/14/2024] [Indexed: 04/09/2024]
Abstract
Drug overdoses have risen dramatically in recent years. We developed a simple nontargeted method using a disposable paper spray cartridge with an integrated solid phase extraction column. This method was used to screen for ~160 fentanyl analogs, synthetic cannabinoids, other synthetic drugs, and traditional drugs of abuse in over 300 authentic overdose samples collected at emergency departments in Indianapolis. A solid phase extraction step was implemented on the paper spray cartridge to enable subnanograms per milliliter synthetic drugs screening in plasma. Analysis was performed on a quadrupole orbitrap mass spectrometer using the sequential window acquisition of all theoretical fragment ion spectra approach in which tandem mass spectrometry was performed using 7 m/z isolation windows in the quadrupole. Calibration curves with isotopically labeled internal standards were constructed for 35 of the most frequently encountered synthetic and traditional illicit drugs by US toxicology labs. Additional qualitative-only drugs in a suspect screening list were also included. Limits of detection in plasma for synthetic cannabinoids ranged from 0.1 to 0.5 and 0.1 to 0.3 ng/mL for fentanyl and its analogs and between 1 and 5 ng/mL for most other drugs. Relative matrix effects were evaluated by determining the variation of the calibration slope in 10 different lots of biofluid and found to be between 3% and 20%. The method was validated on authentic overdose samples collected from two emergency departments in Indianapolis, Indiana, from suspected or known overdoses. Commonly detected synthetic drugs included fentanyl related substances, designer benzodiazepines such as flubromazolam, and the synthetic cannabinoid 5F-PB-22.
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Affiliation(s)
- Hannah Zimmerman-Federle
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
| | - Greta Ren
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
| | - Sarah Dowling
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
| | - Cassandra Warren
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
| | - Daniel Rusyniak
- School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Robert Avera
- School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Nicholas E Manicke
- Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
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Skinnider MA, Mérette SAM, Pasin D, Rogalski J, Foster LJ, Scheuermeyer F, Shapiro AM. Identification of Emerging Novel Psychoactive Substances by Retrospective Analysis of Population-Scale Mass Spectrometry Data Sets. Anal Chem 2023; 95:17300-17310. [PMID: 37966487 DOI: 10.1021/acs.analchem.3c03451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Over the last two decades, hundreds of new psychoactive substances (NPSs), also known as "designer drugs", have emerged on the illicit drug market. The toxic and potentially fatal effects of these compounds oblige laboratories around the world to screen for NPS in seized materials and biological samples, commonly using high-resolution mass spectrometry. However, unambiguous identification of a NPS by mass spectrometry requires comparison to data from analytical reference materials, acquired on the same instrument. The sheer number of NPSs that are available on the illicit market, and the pace at which new compounds are introduced, means that forensic laboratories must make difficult decisions about which reference materials to acquire. Here, we asked whether retrospective suspect screening of population-scale mass spectrometry data could provide a data-driven platform to prioritize emerging NPSs for assay development. We curated a suspect database of precursor and diagnostic fragment ion masses for 83 emerging NPSs and used this database to retrospectively screen mass spectrometry data from 12,727 urine drug screens from one Canadian province. We developed integrative computational strategies to prioritize the most reliable identifications and tracked the frequency of these identifications over a 3 year study period between August 2019 and August 2022. The resulting data were used to guide the acquisition of new reference materials, which were in turn used to validate a subset of the retrospective identifications. Last, we took advantage of matching clinical reports for all 12,727 samples to systematically benchmark the accuracy of our retrospective data analysis approach. Our work opens up new avenues to enable the rapid detection of emerging illicit drugs through large-scale reanalysis of mass spectrometry data.
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Affiliation(s)
- Michael A Skinnider
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, New Jersey 08544, United States
- Ludwig Institute for Cancer Research, Princeton University, Princeton, New Jersey 08544, United States
| | - Sandrine A M Mérette
- Provincial Toxicology Centre, Provincial Health Services Authority, Vancouver, British Columbia V5Z 4R4, Canada
| | - Daniel Pasin
- Forensic Laboratory Division, Office of the Chief Medical Examiner, San Francisco, California 94124, United States
| | - Jason Rogalski
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Leonard J Foster
- Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Frank Scheuermeyer
- Department of Emergency Medicine, St. Paul's Hospital and the University of British Columbia, Vancouver, British Columbia V6Z IY6, Canada
- Centre for Health Evaluation and Outcome Sciences, St. Paul's Hospital, Vancouver, British Columbia V6Z IY6, Canada
| | - Aaron M Shapiro
- Provincial Toxicology Centre, Provincial Health Services Authority, Vancouver, British Columbia V5Z 4R4, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, British Columbia V6T 2B5, Canada
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Majeed HA, Bos TS, Voeten RLC, Kranenburg RF, van Asten AC, Somsen GW, Kohler I. Trapped ion mobility mass spectrometry of new psychoactive substances: Isomer-specific identification of ring-substituted cathinones. Anal Chim Acta 2023; 1264:341276. [PMID: 37230720 DOI: 10.1016/j.aca.2023.341276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/18/2023] [Accepted: 04/23/2023] [Indexed: 05/27/2023]
Abstract
New psychoactive substances (NPS) are synthetic derivatives of illicit drugs designed to mimic their psychoactive effects. NPS are typically not controlled under drug acts or their legal status depends on their molecular structure. Discriminating isomeric forms of NPS is therefore crucial for forensic laboratories. In this study, a trapped ion mobility spectrometry time-of-flight mass spectrometry (TIMS-TOFMS) approach was developed for the identification of ring-positional isomers of synthetic cathinones, a class of compounds representing two-third of all NPS seized in Europe in 2020. The optimized workflow features narrow ion-trapping regions, mobility calibration by internal reference, and a dedicated data-analysis tool, allowing for accurate relative ion-mobility assessment and high-confidence isomer identification. Ortho-, meta- and para-isomers of methylmethcathinone (MMC) and bicyclic ring isomers of methylone were assigned based on their specific ion mobilities within 5 min, including sample preparation and data analysis. The resolution of two distinct protomers per cathinone isomer added to the confidence in identification. The developed approach was successfully applied to the unambiguous assignment of MMC isomers in confiscated street samples. These findings demonstrate the potential of TIMS-TOFMS for forensic case work requiring fast and highly-confident assignment cathinone-drug isomers in confiscated samples.
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Affiliation(s)
- Hany A Majeed
- Division of Bioanalytical Chemistry, Amsterdam Institute of Molecular and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, the Netherlands
| | - Tijmen S Bos
- Division of Bioanalytical Chemistry, Amsterdam Institute of Molecular and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, the Netherlands
| | - Robert L C Voeten
- Division of Bioanalytical Chemistry, Amsterdam Institute of Molecular and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, the Netherlands
| | - Ruben F Kranenburg
- Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, the Netherlands; Forensic Laboratory, Unit Amsterdam, Dutch National Police, Kabelweg 25, 1014 BA, Amsterdam, the Netherlands; Van't Hoff Institute for Molecular Sciences, University of Amsterdam, P.O. Box 94157, 1090 GD, Amsterdam, the Netherlands
| | - Arian C van Asten
- Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, the Netherlands; Van't Hoff Institute for Molecular Sciences, University of Amsterdam, P.O. Box 94157, 1090 GD, Amsterdam, the Netherlands; Co van Ledden Hulsebosch Center (CLHC), Amsterdam Center for Forensic Science and Medicine, P.O. Box 94157, 1090 GD, Amsterdam, the Netherlands
| | - Govert W Somsen
- Division of Bioanalytical Chemistry, Amsterdam Institute of Molecular and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, the Netherlands
| | - Isabelle Kohler
- Division of Bioanalytical Chemistry, Amsterdam Institute of Molecular and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands; Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, the Netherlands; Co van Ledden Hulsebosch Center (CLHC), Amsterdam Center for Forensic Science and Medicine, P.O. Box 94157, 1090 GD, Amsterdam, the Netherlands.
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Park H, Lin M, Zhou J, Eubanks LM, Zhou B, Janda KD. Development of a vaccine against the synthetic opioid U-47700. Front Pharmacol 2023; 14:1219985. [PMID: 37492086 PMCID: PMC10363602 DOI: 10.3389/fphar.2023.1219985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/27/2023] [Indexed: 07/27/2023] Open
Abstract
Opioid use disorders and overdose have become a major public health concern in recent years. U-47700, a New psychoactive substances (NPS) opioid, also known as "pinky" or "pink" has been identified as a new threat in the drug supply because of its potency and abuse potential. Conjugate vaccines that can produce antibodies against target drug molecules have emerged as a promising tool to treat substance use disorders. Herein, we report the design, synthesis, and in vivo characterization of a U-47700 vaccine. The vaccine demonstrated favorable results with rodents producing elevated levels of antibody titer and sub-micromolar affinity to U-47700. In addition, antibodies generated by the vaccine effectively mitigated drug-induced effects by preventing the drug from penetrating the blood-brain barrier, which was verified by antinociception and drug biodistribution studies. The development of a vaccine against U-47700 and other NPS opioids contributes to the continued advancement of non-conventional pharmacological treatments to address the global opioid epidemic.
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Affiliation(s)
- Hyeri Park
- Departments of Chemistry and Immunology, The Skaggs Institute for Chemical Biology, Worm Institute for Research and Medicine (WIRM), The Scripps Research Institute, La Jolla, CA, United States
| | - Mingliang Lin
- Departments of Chemistry and Immunology, The Skaggs Institute for Chemical Biology, Worm Institute for Research and Medicine (WIRM), The Scripps Research Institute, La Jolla, CA, United States
| | - Jian Zhou
- Departments of Chemistry and Immunology, The Skaggs Institute for Chemical Biology, Worm Institute for Research and Medicine (WIRM), The Scripps Research Institute, La Jolla, CA, United States
- The College of Chemistry, Nankai University, Tianjin, China
| | - Lisa M. Eubanks
- Departments of Chemistry and Immunology, The Skaggs Institute for Chemical Biology, Worm Institute for Research and Medicine (WIRM), The Scripps Research Institute, La Jolla, CA, United States
| | - Bin Zhou
- Departments of Chemistry and Immunology, The Skaggs Institute for Chemical Biology, Worm Institute for Research and Medicine (WIRM), The Scripps Research Institute, La Jolla, CA, United States
| | - Kim D. Janda
- Departments of Chemistry and Immunology, The Skaggs Institute for Chemical Biology, Worm Institute for Research and Medicine (WIRM), The Scripps Research Institute, La Jolla, CA, United States
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Walker AL, LoParco C, Rossheim ME, Livingston MD. #Delta8: a retailer-driven increase in Delta-8 THC discussions on Twitter from 2020 to 2021. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2023; 49:491-499. [PMID: 37433117 PMCID: PMC11022156 DOI: 10.1080/00952990.2023.2222433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 06/02/2023] [Accepted: 06/04/2023] [Indexed: 07/13/2023]
Abstract
Background: Delta-8 tetrahydrocannabinol (THC) has experienced significant cultivation, use, and online marketing growth in recent years.Objectives: This study utilized natural language processing on Twitter data to examine trends in public discussions regarding this novel psychoactive substance.Methods: This study analyzed the frequency of #Delta8 tweets over time, most commonly used words, sentiment classification of words in tweets, and a qualitative analysis of a random sample of tweets containing the hashtag "Delta8" from January 1, 2020 to September 26, 2021.Results: A total of 41,828 tweets were collected, with 30,826 unique tweets (73.7%) and 11,002 quotes, retweets, or replies (26.3%). Tweet activity increased from 2020 to 2021, with daily original tweets rising from 8.55 to 149. This increase followed a high-engagement retailer promotion in June 2021. Commonly used terms included "cbd," "cannabis," "edibles," and "cbdoil." Sentiment classification revealed a predominance of "positive" (30.93%) and "trust" (14.26%) categorizations, with 8.42% classified as "negative." Qualitative analysis identified 20 codes, encompassing substance type, retailers, links, and other characteristics.Conclusion: Twitter discussions on Delta-8 THC exhibited a sustained increase in prevalence from 2020 to 2022, with online retailers playing a dominant role. The content also demonstrated significant overlap with cannabidiol and various cannabis products. Given the growing presence of retailer marketing and sales on social media, it is crucial for public health researchers to monitor and promote relevant Delta-8 health recommendations on these platforms to ensure a balanced conversation.
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Affiliation(s)
- Andrew L. Walker
- Department of Behavioral, Social, and Health Education Sciences, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Cassidy LoParco
- Department of Health Behavior and Health Systems, School of Public Health, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Matthew E. Rossheim
- Department of Health Behavior and Health Systems, School of Public Health, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Melvin D. Livingston
- Department of Behavioral, Social, and Health Education Sciences, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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Hashim A, Mohammed NA, Othman A, Gab-Allah MAK, Al-Kahodary AHM, Gaber ER, Hassan AM, Aranda M, Hussien R, Mokhtar A, Islam MS, Lee KY, Asghar MS, Tahir MJ, Yousaf Z. Pattern of novel psychoactive substance use among patients presented to the poison control centre of Ain Shams University Hospitals, Egypt: A cross-sectional study. Heliyon 2022; 8:e10084. [PMID: 36039128 PMCID: PMC9418213 DOI: 10.1016/j.heliyon.2022.e10084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/10/2022] [Accepted: 07/21/2022] [Indexed: 11/11/2022] Open
Abstract
Background Novel psychoactive substances (NPSs) are relatively new substances in the illicit drug market, not previously listed in the United Nations Office on Drugs and Crime (UNDOC). Strox and Voodoo are considered some of the most popular blends of NPS in the Egyptian drug market. Objectives The current study was conducted to assess NPS's use pattern: Voodoo and Strox among acutely intoxicated patients presented to the poison control center of Ain Shams University Hospitals (PCC- ASUH). Methods A single center based cross-sectional study was carried out in the PCC-ASUH among acutely intoxicated patients presenting to the emergency department (ED) over four months (from January–April 2019. using a previously adopted and validated Fahmy and El-Sherbini socioeconomic scale (SES). Data were presented as mean, median and range as appropriate. Both smoking and crowding indexes were calculated and presented as previously reported. Results Fifty-one patients were presented to the ED of PCC-ASUH during the study period. A total of 96.1% (n = 49) were males. The mean age was 25 ± 7.5 years. The most common NPS used was Strox: 54.9% (n = 28), followed by Voodoo: 27.4% (n = 14). Neurological and gastrointestinal (GI) symptoms were the most frequent presentations. The most common motive behind NPS use was the desire to give a trial of new psychoactive substances. The mean SES score was 35.1 ± 13.17. Most patients have the preparatory as the highest education 36.0% (n = 18). Conclusions NPS use is common among young males in preparatory education from different social classes, starting it most commonly as a means to experiencing a new high. Neurological and GI manifestations are the most common presenting symptoms of NPS intoxication.
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Affiliation(s)
- Ahmed Hashim
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Nouran A Mohammed
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - AlFadl Othman
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mohab A K Gab-Allah
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Ahmed H M Al-Kahodary
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Eslam R Gaber
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Ahmed M Hassan
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mahmoud Aranda
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Rania Hussien
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Amany Mokhtar
- Department of Community, Environmental and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Md Saiful Islam
- Department of Public Health and Informatics, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh.,Centre for Advanced Research, Excellence in Public Health, Savar, Dhaka-1342, Bangladesh
| | - Ka Yiu Lee
- Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden
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Welz A, Koba M, Kośliński P, Siódmiak J. Comparison of LC-MS and LC-DAD Methods of Detecting Abused Piperazine Designer Drugs. J Clin Med 2022; 11:jcm11071758. [PMID: 35407366 PMCID: PMC8999770 DOI: 10.3390/jcm11071758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/17/2022] [Accepted: 03/19/2022] [Indexed: 12/10/2022] Open
Abstract
Recreational use of piperazine designer drugs is a serious threat to human health. These compounds act on the body in a similar fashion to illegal drugs. They induce psychostimulatory effects as well as visual and auditory hallucinations to varying degrees. In many cases of poisoning and deaths, the presence of two or even several psychoactive substances have been demonstrated. Piperazine derivatives are often found in such mixtures and pose a great analytical problem during their identification. Additionally, some piperazine derivatives can be detected in biological material as a result of metabolic changes to related drugs. Therefore, it is necessary to correctly identify these compounds and ensure repeatability of determinations. This article presents a comparison of the methods used to detect abused piperazine designer drugs using liquid chromatography in combination with a diode-array detector (LC-DAD) or mass spectrometer (LC-MS). Each of methods can be used independently for determinations, obtaining reliable results in a short time of analysis. These methods can also complement each other, providing qualitative and quantitative confirmation of results. The proposed methods provide analytical confirmation of poisoning and may be helpful in toxicological diagnostics.
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Affiliation(s)
- Anna Welz
- Department of Toxicology and Bromatology, Faculty of Pharmacy, Collegium Medicum Nicolaus Copernicus University, 85-089 Bydgoszcz, Poland; (M.K.); (P.K.)
- Correspondence:
| | - Marcin Koba
- Department of Toxicology and Bromatology, Faculty of Pharmacy, Collegium Medicum Nicolaus Copernicus University, 85-089 Bydgoszcz, Poland; (M.K.); (P.K.)
| | - Piotr Kośliński
- Department of Toxicology and Bromatology, Faculty of Pharmacy, Collegium Medicum Nicolaus Copernicus University, 85-089 Bydgoszcz, Poland; (M.K.); (P.K.)
| | - Joanna Siódmiak
- Department of Laboratory Diagnostics, Faculty of Pharmacy, Collegium Medicum Nicolaus Copernicus University, 85-094 Bydgoszcz, Poland;
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Stogner J, Patterson C. Suicidal Ideation, Planning, and Attempts Among Synthetic Cannabinoid Users Across Different Demographic Subgroups. CRISIS 2021; 43:323-330. [PMID: 34405698 DOI: 10.1027/0227-5910/a000802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background: Case studies have linked synthetic cannabinoid (SC) use to suicide risk both during and following acute psychoactive effects. No study has explored whether a meaningful relationship exists between SC use and suicidal ideation, planning, and attempts within a generalizable sample. Aims: This work attempted to determine whether SC use is significantly associated with suicidal thoughts, planning, or attempts and whether the association between SC use and suicide may be stronger in certain demographic groups. Method: Cross-sectional self-report data from the Youth Risk Behavior Surveillance System were utilized. Logistic regression models were explored within a sample of 29,384 adolescents. Results: A clear connection emerged between SC use and suicidal thoughts and attempts. SC use and suicide risk were strongly related within the lesbian, gay, and bisexual and African Americans populations, even after controlling for depressive symptoms. Limitations: The study was cross-sectional and respondents may have underreported substance use or suicidal thoughts. Conclusion: Whether SC use has an impact on suicidal ideation directly, indirectly, or if it is simply a co-occurring phenomenon, it may serve as a flag of enhanced risk. Physicians must remain cognizant of the SC-suicide risk connection, particularly among African American and/or lesbian, gay, or bisexual patients.
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Affiliation(s)
- John Stogner
- Department of Criminal Justice and Criminology, University of North Carolina at Charlotte, NC, USA
| | - Courtney Patterson
- Department of Criminal Justice and Criminology, University of North Carolina at Charlotte, NC, USA
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10
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Poyatos L, Papaseit E, Olesti E, Pérez-Mañá C, Ventura M, Carbón X, Grifell M, Fonseca F, Torrens M, de la Torre R, Farré M. A Comparison of Acute Pharmacological Effects of Methylone and MDMA Administration in Humans and Oral Fluid Concentrations as Biomarkers of Exposure. BIOLOGY 2021; 10:biology10080788. [PMID: 34440023 PMCID: PMC8389614 DOI: 10.3390/biology10080788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/06/2021] [Accepted: 08/14/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary Methylone is a synthetic cathinone that is usually used as a substitute for conventional psychostimulants, such as MDMA. Chemically, methylone is considered the β-keto analogue of MDMA, with which it presumably shares similar pharmacological effects. To date, the available data about the human pharmacology of methylone in humans are very scarce and are mainly derived from user experiences, published in internet forums or intoxication reports. Thus, an observational–naturalistic study was conducted to evaluate the acute pharmacological effects and determine biomarkers of exposure in oral fluid of methylone after oral self-administration in comparison to MDMA. Methylone induced the prototypical psychostimulant and empathogenic effects commonly associated with MDMA, although they were of lower intensity. Oral fluid concentrations of methylone can be considered a suitable biomarker of acute exposure, and oral fluid has been proven to be a useful biological matrix of detection. Abstract Considered the β-keto analogue of 3,4-methylenedioxymethamphetamine (MDMA, ecstasy), 3,4-Methylenedioxymethcathinone (methylone) is a synthetic cathinone. Over the years, methylone has been used as a substitute for conventional psychostimulants, such as MDMA. To date, little is known about the human pharmacology of methylone; the only available information has been provided by surveys or published intoxication reports. In the present observational–naturalistic study, we evaluate the acute subjective and physiological effects of methylone after oral self-administration in comparison to MDMA in healthy poly-drug users. Fourteen participants (10 males, 4 females) selected their single oral doses of methylone from 100 to 300 mg (n = 8, mean dose 187.5 mg) or MDMA from 75 to 100 mg (n = 6, mean dose 87.5 mg) based on their experience. Study variables were assessed at 0, 1, 2, and 4 h (h) and included vital signs (non-invasive blood pressure, heart rate, cutaneous temperature) and subjective effects using visual analogue scales (VAS), the 49-item Addiction Research Centre Inventory (ARCI) short form, and the Evaluation of the Subjective Effects of Substances with Abuse Potential (VESSPA-SSE) questionnaire. Additionally, oral fluid concentrations of methylone and MDMA were determined. Acute pharmacological effects produced by methylone followed the prototypical psychostimulant and empathogenic profile associated with MDMA, although they were less intense. Methylone concentrations in oral fluid can be considered a useful biomarker to detect acute exposure in oral fluid. Oral fluid concentrations of MDMA and methylone peaked at 2 h and concentrations of MDMA were in the range of those previously described in controlled studies. Our results demonstrate that the potential abuse liability of methylone is similar to that of MDMA in recreational subjects.
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Affiliation(s)
- Lourdes Poyatos
- Department of Clinical Pharmacology, Hospital Universitari Germans Trias i Pujol and Institut de Recerca Germans Trias i Pujol (HUGTiP-IGTP), 08916 Badalona, Spain; (L.P.); (C.P.-M.); (M.F.)
- Department of Pharmacology, Therapeutics and Toxicology, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallés, Spain
| | - Esther Papaseit
- Department of Clinical Pharmacology, Hospital Universitari Germans Trias i Pujol and Institut de Recerca Germans Trias i Pujol (HUGTiP-IGTP), 08916 Badalona, Spain; (L.P.); (C.P.-M.); (M.F.)
- Department of Pharmacology, Therapeutics and Toxicology, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallés, Spain
- Correspondence:
| | - Eulalia Olesti
- Integrative Pharmacology and Systems Neuroscience Research Group, Neurosciences Research Program, Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain; (E.O.); (R.d.l.T.)
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra (CEXS-UPF), 08003 Barcelona, Spain
| | - Clara Pérez-Mañá
- Department of Clinical Pharmacology, Hospital Universitari Germans Trias i Pujol and Institut de Recerca Germans Trias i Pujol (HUGTiP-IGTP), 08916 Badalona, Spain; (L.P.); (C.P.-M.); (M.F.)
- Department of Pharmacology, Therapeutics and Toxicology, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallés, Spain
| | - Mireia Ventura
- Energy Control, Associació Benestar i Desenvolupament, 08041 Barcelona, Spain; (M.V.); (X.C.); (M.G.)
| | - Xoán Carbón
- Energy Control, Associació Benestar i Desenvolupament, 08041 Barcelona, Spain; (M.V.); (X.C.); (M.G.)
| | - Marc Grifell
- Energy Control, Associació Benestar i Desenvolupament, 08041 Barcelona, Spain; (M.V.); (X.C.); (M.G.)
- Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallés, Spain; (F.F.); (M.T.)
- Institut de Neuropsiquiatria i Adiccions (INAD), Parc de Salut Mar, 08003 Barcelona, Spain
| | - Francina Fonseca
- Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallés, Spain; (F.F.); (M.T.)
- Institut de Neuropsiquiatria i Adiccions (INAD), Parc de Salut Mar, 08003 Barcelona, Spain
| | - Marta Torrens
- Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallés, Spain; (F.F.); (M.T.)
- Institut de Neuropsiquiatria i Adiccions (INAD), Parc de Salut Mar, 08003 Barcelona, Spain
| | - Rafael de la Torre
- Integrative Pharmacology and Systems Neuroscience Research Group, Neurosciences Research Program, Hospital del Mar Medical Research Institute (IMIM), 08003 Barcelona, Spain; (E.O.); (R.d.l.T.)
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra (CEXS-UPF), 08003 Barcelona, Spain
| | - Magí Farré
- Department of Clinical Pharmacology, Hospital Universitari Germans Trias i Pujol and Institut de Recerca Germans Trias i Pujol (HUGTiP-IGTP), 08916 Badalona, Spain; (L.P.); (C.P.-M.); (M.F.)
- Department of Pharmacology, Therapeutics and Toxicology, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallés, Spain
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11
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Centazzo N, Chojnacki MR, Elmore JS, Rodriguez R, Acosta T, Suzuki M, Rice KC, Baumann MH, Concheiro M. Brain Concentrations of Methylone and Its Metabolites after Systemic Methylone Administration: Relationship to Pharmacodynamic Effects. J Pharmacol Exp Ther 2021; 377:398-406. [PMID: 33785525 PMCID: PMC11058058 DOI: 10.1124/jpet.121.000531] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/24/2021] [Indexed: 01/01/2023] Open
Abstract
3,4-Methylenedioxy-N-methylcathinone (methylone) is a new psychoactive substance with stimulant properties and potential for abuse. Despite its popularity, limited studies have examined relationships between brain concentrations of methylone, its metabolites, and pharmacodynamic effects. The goal of the present study was 2-fold: 1) to determine pharmacokinetics of methylone and its major metabolites-4-hydroxy-3-methoxy-N-methylcathinone (HMMC), 3,4-dihydroxy-N-methylcathinone (HHMC), and 3,4-methylenedioxycathinone (MDC)-in rat brain and plasma and 2) to relate brain pharmacokinetic parameters to pharmacodynamic effects including locomotor behavior and postmortem neurochemistry. Male Sprague-Dawley rats received subcutaneous methylone (6, 12, or 24 mg/kg) or saline vehicle (n = 16/dose), and subgroups were decapitated after 40 or 120 minutes. Plasma and prefrontal cortex were analyzed for concentrations of methylone and its metabolites by liquid chromatography-tandem mass spectrometry. Frontal cortex and dorsal striatum were analyzed for dopamine, 5-HT, and their metabolites by high-performance liquid chromatography-electrochemical detection. Brain and plasma concentrations of methylone and its metabolites rose with increasing methylone dose, but brain methylone and MDC concentrations were greater than dose-proportional. Brain-to-plasma ratios for methylone and MDC were ≥ 3 (range 3-12), whereas those for HHMC and HMMC were ≤ 0.2 (range 0.01-0.2). Locomotor activity score was positively correlated with brain methylone and MDC, whereas cortical 5-HT was negatively correlated with these analytes at 120 minutes. Our findings show that brain concentrations of methylone and MDC display nonlinear accumulation. Behavioral and neurochemical effects of systemically administered methylone are related to brain concentrations of methylone and MDC but not its hydroxylated metabolites, which do not effectively penetrate into the brain. SIGNIFICANCE STATEMENT: Behavioral and neurochemical effects of methylone are related to brain concentrations of methylone and its metabolite MDC but not its hydroxylated metabolites, 4-hydroxy-3-methoxy-N-methylcathinone and 3,4-dihydroxy-N-methylcathinone, which do not effectively penetrate into the brain. Methylone and MDC display nonlinear accumulation in the brain, which could cause untoward effects on serotonin neurons in vulnerable brain regions, including the frontal cortex.
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Affiliation(s)
- Nicole Centazzo
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Michael R Chojnacki
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Joshua S Elmore
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Raider Rodriguez
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Teeshavi Acosta
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Masaki Suzuki
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Kenner C Rice
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Michael H Baumann
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
| | - Marta Concheiro
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, New York (N.C., R.R., T.A., M.C.); Designer Drug Research Unit, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH), Baltimore, Maryland (M.R.C., J.S.E., M.H.B.); and Drug Design and Synthesis Section, IRP, NIDA, NIH, Rockville, Maryland (M.S., K.C.R.)
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Brandt SD, Walters HM, Partilla JS, Blough BE, Kavanagh PV, Baumann MH. The psychoactive aminoalkylbenzofuran derivatives, 5-APB and 6-APB, mimic the effects of 3,4-methylenedioxyamphetamine (MDA) on monoamine transmission in male rats. Psychopharmacology (Berl) 2020; 237:3703-3714. [PMID: 32875347 PMCID: PMC7686291 DOI: 10.1007/s00213-020-05648-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/20/2020] [Indexed: 12/22/2022]
Abstract
RATIONALE The nonmedical use of new psychoactive substances (NPS) is a worldwide public health concern. The so-called "benzofury" compounds, 5-(2-aminopropyl)benzofuran (5-APB) and 6-(2-aminopropyl)benzofuran (6-APB), are NPS with stimulant-like properties in human users. These substances are known to interact with monoamine transporters and 5-HT receptors in transfected cells, but less is known about their effects in animal models. METHODS Here, we used in vitro monoamine transporter assays in rat brain synaptosomes to characterize the effects of 5-APB and 6-APB, together with their N-methyl derivatives 5-MAPB and 6-MAPB, in comparison with 3,4-methylenedioxyamphetamine (MDA) and 3,4-methylenedioxymethamphetamine (MDMA). In vivo neurochemical and behavioral effects of 5-APB (0.3 and 1.0 mg/kg, i.v.) and 6-APB (0.3 and 1.0 mg/kg, i.v.) were assessed in comparison with MDA (1.0 and 3.0 mg/kg, i.v.) using microdialysis sampling in the nucleus accumbens of conscious male rats. RESULTS All four benzofuran derivatives were substrate-type releasers at dopamine transporters (DAT), norepinephrine transporters (NET), and serotonin transporters (SERT) with nanomolar potencies, similar to the profile of effects produced by MDA and MDMA. However, the benzofurans were at least threefold more potent than MDA and MDMA at evoking transporter-mediated release. Like MDA, both benzofurans induced dose-related elevations in extracellular dopamine and serotonin in the brain, but benzofurans were more potent than MDA. The benzofuran derivatives also induced profound behavioral activation characterized by forward locomotion which lasted for at least 2 h post-injection. CONCLUSIONS Overall, benzofurans are more potent than MDA in vitro and in vivo, producing sustained stimulant-like effects in rats. These data suggest that benzofuran-type compounds may have abuse liability and could pose risks for adverse effects, especially if used in conjunction with abused drugs or medications which enhance monoamine transmission in the brain.
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Affiliation(s)
- Simon D. Brandt
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, L3 3AF, Liverpool, UK
| | - Hailey M. Walters
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, 333 Cassell Drive, MD 21224, USA
| | - John S. Partilla
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, 333 Cassell Drive, MD 21224, USA
| | - Bruce E. Blough
- Center for Drug Discovery, RTI International, 3040 Cornwallis Rd, Research Triangle Park, NC 27709, USA
| | - Pierce V. Kavanagh
- Department of Pharmacology and Therapeutics, School of Medicine, Trinity Centre for Health Sciences, St. James Hospital, Dublin 8, Ireland
| | - Michael H. Baumann
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, 333 Cassell Drive, MD 21224, USA,Correspondence: Michael H. Baumann, Ph.D., Chief, Designer Drug Research Unit (DDRU), Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA) 333 Cassell Drive, Suite 4400, Baltimore, MD 21224,
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Chary MA, Manini AF, Boyer EW, Burns M. The Role and Promise of Artificial Intelligence in Medical Toxicology. J Med Toxicol 2020; 16:458-464. [PMID: 32215849 PMCID: PMC7554271 DOI: 10.1007/s13181-020-00769-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 02/03/2020] [Accepted: 03/05/2020] [Indexed: 12/23/2022] Open
Abstract
Artificial intelligence (AI) refers to machines or software that process information and interact with the world as understanding beings. Examples of AI in medicine include the automated reading of chest X-rays and the detection of heart dysrhythmias from wearables. A key promise of AI is its potential to apply logical reasoning at the scale of data too vast for the human mind to comprehend. This scaling up of logical reasoning may allow clinicians to bring the entire breadth of current medical knowledge to bear on each patient in real time. It may also unearth otherwise unreachable knowledge in the attempt to integrate knowledge and research across disciplines. In this review, we discuss two complementary aspects of artificial intelligence: deep learning and knowledge representation. Deep learning recognizes and predicts patterns. Knowledge representation structures and interprets those patterns or predictions. We frame this review around how deep learning and knowledge representation might expand the reach of Poison Control Centers and enhance syndromic surveillance from social media.
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Affiliation(s)
- Michael A Chary
- Harvard Medical Toxicology Program, Department of Emergency Medicine, Boston Children's Hospital, Boston, MA, USA.
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, USA.
| | - Alex F Manini
- Department of Emergency Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Edward W Boyer
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Michele Burns
- Harvard Medical Toxicology Program, Department of Emergency Medicine, Boston Children's Hospital, Boston, MA, USA
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14
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Gamboa D, Jørgenrud B, Bryun EA, Vindenes V, Koshkina EA, Nadezhdin AV, Kabashi S, Tetenova EJ, Berg T, Nyman AAT, Kolgashkin AJ, Petukhov AE, Perekhodov SN, Davydova EN, Lerdal A, Nordby G, Bogstrand ST. Prevalence of psychoactive substance use among acutely hospitalised patients in Oslo and Moscow: a cross-sectional, observational study. BMJ Open 2020; 10:e032572. [PMID: 32948540 PMCID: PMC7500296 DOI: 10.1136/bmjopen-2019-032572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVES The use of psychoactive prescription medication is increasing in the general population. This is a cause for concern, particularly among the elderly, where physiological changes related to senescence increase the risk for adverse effects. While previous studies regarding psychoactive substance use have generally been population based, we sought to determine the frequency of such use among acutely hospitalised patients. SETTING Two emergency departments (EDs), one in Oslo and one in Moscow, admitting patients to Departments of Internal Medicine. PARTICIPANTS 5583 patients aged ≥18 years participated, distributed evenly between genders and study locations. Patients unable to give informed consent were excluded. The study sites did not admit patients with surgical conditions and/or injuries. PRIMARY AND SECONDARY OUTCOMES The presence of psychoactive substances was determined through blood analysis using liquid chromatography-mass spectrometry. Secondary outcomes comprised demographic data (including age, gender, employment and marital status), degree of psychological distress, concurrent alcohol use, and self-reported alcohol, psychoactive drug and illicit substance use. RESULTS 32.3% in Oslo and 12% in Moscow were positive for one or more psychoactive medicinal drugs (benzodiazepines, z-hypnotics, opioids or barbiturates). In Oslo, medicinal drug use was associated with being aged 61 to 70 years (OR 2.40, 95% CI 1.61 to 3.58) compared with 18 to 40 years, and psychological distress (OR 2.61, 95% CI 2.06 to 3.30). In Moscow, psychoactive medicinal drug use was also associated with psychological distress (OR 1.68, 95% CI 1.18 to 2.39), and was less common among patients aged 41 to 60 years (OR 0.62, 95% CI 0.43 to 0.88) than among patients aged 18 to 40 years. CONCLUSION A significant proportion of admitted patients used one or more psychoactive medicinal drugs, in particular benzodiazepines (Oslo and Moscow) and opiates (Oslo). We suggest formalised screening for inappropriate prescription drug use and increased adherence to clinical prescription guidelines.
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Affiliation(s)
- Danil Gamboa
- Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
- Department of Internal Medicine, Lovisenberg Diaconal Hospital, Oslo, Norway
| | | | - Evgeny A Bryun
- Moscow Research and Practical Centre on Addictions, Moscow Department of Health, Moscow, Russia
- Russian Medical Academy of Continuous Professional Education, Moscow, Russia
| | - Vigdis Vindenes
- Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
- Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway
| | - Evgenya A Koshkina
- Moscow Research and Practical Centre on Addictions, Moscow Department of Health, Moscow, Russia
| | - Aleksei V Nadezhdin
- Moscow Research and Practical Centre on Addictions, Moscow Department of Health, Moscow, Russia
- Russian Medical Academy of Continuous Professional Education, Moscow, Russia
| | - Saranda Kabashi
- Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Elena J Tetenova
- Moscow Research and Practical Centre on Addictions, Moscow Department of Health, Moscow, Russia
| | - Thomas Berg
- Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
| | | | - Alexey J Kolgashkin
- Moscow Research and Practical Centre on Addictions, Moscow Department of Health, Moscow, Russia
| | - Aleksei E Petukhov
- Moscow Research and Practical Centre on Addictions, Moscow Department of Health, Moscow, Russia
- Sechenov First Moscow State Medical University, Moscow, Russia
| | | | | | - Anners Lerdal
- Department of Interdisciplinary Health Sciences, Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department of Research, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Gudmund Nordby
- Department of Internal Medicine, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Stig Tore Bogstrand
- Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
- Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
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15
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Abstract
U-47700, 3,4-dichloro-N-((1R,2R)-2-(dimethylamino)cyclohexyl)-N-methyl benzamide, is a novel synthetic opioid (NSO), discovered by the Upjohn company in the late 1970s. With potent in vivo activity, ∼10-times greater than that of morphine, U-47700 has become a drug of widespread abuse due to its ease of synthesis and, until recently, lack of robust detection methods by law enforcement. U-47700 has been found in counterfeit oxycodone tablets and is a key ingredient in "gray death." Due to its emergence worldwide in the past 5 years, it is now a Schedule I drug in the United States and similarly designated around the world; moreover, at autopsy, U-47700 was found to have contributed to the death of the pop artist Prince. This Review will capture the >40 year history of U-47700 and go in-depth regarding the synthesis, medicinal chemistry, in vitro/in vivo pharmacology, drug metabolism (from postmortem overdose cases), and societal impact of this DARK Classic in chemical neuroscience.
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Affiliation(s)
- Kwaku Kyei-Baffour
- Warren Center for Neuroscience Drug Discovery, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Craig W. Lindsley
- Warren Center for Neuroscience Drug Discovery, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
- Department of Chemistry, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
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Zhou X, Bouitbir J, Liechti ME, Krähenbühl S, Mancuso RV. Hyperthermia Increases Neurotoxicity Associated with Novel Methcathinones. Cells 2020; 9:cells9040965. [PMID: 32295288 PMCID: PMC7227000 DOI: 10.3390/cells9040965] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/29/2020] [Accepted: 04/09/2020] [Indexed: 12/16/2022] Open
Abstract
Hyperthermia is one of the severe acute adverse effects that can be caused by the ingestion of recreational drugs, such as methcathinones. The effect of hyperthermia on neurotoxicity is currently not known. The primary aim of our study was therefore to investigate the effects of hyperthermia (40.5 °C) on the neurotoxicity of methcathinone (MC), 4-chloromethcathinone (4-CMC), and 4-methylmethcathinone (4-MMC) in SH-SY5Y cells. We found that 4-CMC and 4-MMC were cytotoxic (decrease in cellular ATP and plasma membrane damage) under both hyper- (40.5 °C) and normothermic conditions (37 °C), whereby cells were more sensitive to the toxicants at 40.5 °C. 4-CMC and 4-MMC impaired the function of the mitochondrial electron transport chain and increased mitochondrial formation of reactive oxygen species (ROS) in SH-SY5Y cells, which were accentuated under hyperthermic conditions. Hyperthermia was associated with a rapid expression of the 70 kilodalton heat shock protein (Hsp70), which partially prevented cell death after 6 h of exposure to the toxicants. After 24 h of exposure, autophagy was stimulated by the toxicants and by hyperthermia but could only partially prevent cell death. In conclusion, hyperthermic conditions increased the neurotoxic properties of methcathinones despite the stimulation of protective mechanisms. These findings may be important for the understanding of the mechanisms and clinical consequences of the neurotoxicity associated with these compounds.
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Affiliation(s)
- Xun Zhou
- Division of Clinical Pharmacology & Toxicology, University Hospital Basel, 4031 Basel, Switzerland; (X.Z.); (J.B.); (M.E.L.); (R.V.M.)
- Department of Biomedicine, University of Basel, 4031 Basel, Switzerland
| | - Jamal Bouitbir
- Division of Clinical Pharmacology & Toxicology, University Hospital Basel, 4031 Basel, Switzerland; (X.Z.); (J.B.); (M.E.L.); (R.V.M.)
- Department of Biomedicine, University of Basel, 4031 Basel, Switzerland
- Swiss Centre for Applied Human Toxicology, 4031 Basel, Switzerland
| | - Matthias E. Liechti
- Division of Clinical Pharmacology & Toxicology, University Hospital Basel, 4031 Basel, Switzerland; (X.Z.); (J.B.); (M.E.L.); (R.V.M.)
- Department of Biomedicine, University of Basel, 4031 Basel, Switzerland
| | - Stephan Krähenbühl
- Division of Clinical Pharmacology & Toxicology, University Hospital Basel, 4031 Basel, Switzerland; (X.Z.); (J.B.); (M.E.L.); (R.V.M.)
- Department of Biomedicine, University of Basel, 4031 Basel, Switzerland
- Swiss Centre for Applied Human Toxicology, 4031 Basel, Switzerland
- Correspondence: ; Tel.: +41-61-265-4715
| | - Riccardo V. Mancuso
- Division of Clinical Pharmacology & Toxicology, University Hospital Basel, 4031 Basel, Switzerland; (X.Z.); (J.B.); (M.E.L.); (R.V.M.)
- Department of Biomedicine, University of Basel, 4031 Basel, Switzerland
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17
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Synthetic psychoactive cathinones: hypothermia and reduced lethality compared to methamphetamine and methylenedioxymethamphetamine. Pharmacol Biochem Behav 2020; 191:172871. [PMID: 32061662 DOI: 10.1016/j.pbb.2020.172871] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/16/2019] [Accepted: 02/11/2020] [Indexed: 12/16/2022]
Abstract
RATIONALE Synthetic psychoactive cathinones (SPCs) are drugs with psychostimulant and entactogenic properties like methamphetamine (MA) and 3,4-methylenedioxymethamphetamine (MDMA). Despite clinical reports of human overdose, it remains to be determined if SPCs have greater propensity for adverse effects than MA or MDMA. OBJECTIVES To determine whether the SPCs cathinone (CAT), methcathinone (MCAT), mephedrone (MMC), and methylenedioxypyrovalerone (MDPV) have lower LD50 values than MA or MDMA. METHODS Male and female C57Bl/6J mice received single injections of one of 6 doses of a test drug (0-160 mg/kg IP). Temperature and behavioral observations were taken every 20 min for 2 h followed by euthanasia of surviving mice. Organs were weighed and evaluated for histopathological changes. RESULTS LD50 values for MA and MDMA, 84.5 and 100.9 mg/kg respectively, were similar to previous observations. The LD50 for MMC was 118.8 mg/kg, but limited lethality was observed for other SPCs (CAT, MCAT, MDPV), so LD50 values could not be calculated. For all drugs, death was associated with seizure, when it was observed. Rather than hyperthermia, dose-dependent hypothermia was observed for MMC, MDPV, CAT, and MCAT. Contrary to initial expectations, none of the SPCs studied here had LD50 values lower than MA or MDMA. CONCLUSIONS These data indicate that, under the conditions studied here: (1) SPCs exhibit less lethality than MA and MDMA; (2) SPCs impair thermoregulation; (3) effects of SPCs on temperature appear to be independent of effects on lethality.
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18
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Zangani C, Schifano F, Napoletano F, Arillotta D, Gilgar L, Guirguis A, Corkery JM, Gambini O, Vento A. The e-Psychonauts' 'Spiced' World; Assessment of the Synthetic Cannabinoids' Information Available Online. Curr Neuropharmacol 2020; 18:966-1051. [PMID: 32116194 PMCID: PMC7709145 DOI: 10.2174/1570159x18666200302125146] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/10/2020] [Accepted: 02/28/2020] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND A wide range of novel psychoactive substances (NPS) is regularly searched and discussed online by web-based drug enthusiasts (i.e. the e-psychonauts). Among NPS, the range of synthetic cannabinoids (SC; 'Spice') currently represents a challenge for governments and clinicians. METHODS Using a web crawler (i.e. the NPS.Finder®), the present study aimed at assessing psychonauts' fora/platforms to better understand the online mentions of SC. RESULTS The open-web crawling/navigating software identified here some 1,103 synthetic cannabinoids. Of these, 863 molecules were not listed in either the international or the European NPS databases. CONCLUSION A web crawling approach helped here in identifying a large range of unknown SC likely to possess a misuse potential. Most of these novel/emerging molecules are still relatively unknown. This is a reason for concern; each of these analogues potentially presents different toxicodynamic profiles and there is a lack of docking, preclinical, and clinical observations. Strengthening multidisciplinary collaboration between clinicians and bioinformatics may prove useful in better assessing SC-associated public health risks.
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Affiliation(s)
| | - Fabrizio Schifano
- Address correspondence to this author at the Psychopharmacology, Drug Misuse and Novel Psychoactive Substances Research Unit, School of Life and Medical Sciences, University of Hertfordshire, Hatfield, UK; E-mail:
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Richeval C, Baillieux M, Pawlak G, Phanithavong M, Wiart JF, Humbert L, Batisse A, Lamoureux C, Pfau G, Nefau T, Allorge D, Gaulier JM. Benzoylfentanyl and parafluorobutyrfentanyl: Some analytical and metabolism data. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2019. [DOI: 10.1016/j.toxac.2019.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Richeval C, Dumestre-Toulet V, Wiart JF, Vanhoye X, Humbert L, Nachon-Phanithavong M, Allorge D, Gaulier JM. New psychoactive substances in oral fluid of drivers around a music festival in south-west France in 2017. Forensic Sci Int 2019; 297:265-269. [DOI: 10.1016/j.forsciint.2019.02.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/08/2019] [Accepted: 02/16/2019] [Indexed: 11/29/2022]
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Costa JL, Cunha KF, Lanaro R, Cunha RL, Walther D, Baumann MH. Analytical quantification, intoxication case series, and pharmacological mechanism of action for N-ethylnorpentylone (N-ethylpentylone or ephylone). Drug Test Anal 2019; 11:461-471. [PMID: 30207090 PMCID: PMC7316160 DOI: 10.1002/dta.2502] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/05/2018] [Accepted: 09/06/2018] [Indexed: 01/28/2023]
Abstract
Synthetic cathinones continue to proliferate in clandestine drug markets worldwide. N-ethylnorpentylone (also known as N-ethylpentylone or ephylone) is a popular emergent cathinone, yet little information is available about its toxicology and pharmacology. Here we characterize the analytical quantification, clinical presentation, and pharmacological mechanism of action for N-ethylnorpentylone. Liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) was used to quantify N-ethylnorpentylone in blood obtained from human cases. Clinical features exhibited by the intoxicated individuals are described. The activity of N-ethylnorpentylone at plasma membrane transporters for dopamine (DAT), norepinephrine (NET) and 5-HT (SERT) was assessed using in vitro assays measuring uptake inhibition and evoked release of [3 H] neurotransmitters in rat brain synaptosomes. Our LC-MS/MS method assayed N-ethylnorpentylone concentrations with limits of detection and quantification of 1 and 5 ng/mL, respectively. Quantitation was linear from 5 to 500 ng/mL, and the method displayed specificity and reproducibility. Circulating concentrations of N-ethylnorpentylone ranged from 7 to 170 ng/mL in clinical cases, and the associated symptoms included palpitations, tachycardia, agitation, hallucinations, coma and death. N-Ethylnorpentylone was a potent inhibitor at DAT (IC50 = 37 nM), NET (IC50 = 105 nM) and SERT (IC50 = 383 nM) but displayed no transporter releasing activity. We present a validated method for quantifying N-ethylnorpentylone in human case work. The drug is a psychomotor stimulant capable of inducing serious cardiovascular and neurological side-effects which can be fatal. In vitro findings indicate that N-ethylnorpentylone exerts its effects by potent blockade of DAT and NET, thereby elevating extracellular levels of dopamine and norepinephrine in the brain and periphery.
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Affiliation(s)
- Jose Luiz Costa
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas, São Paulo 13083-859, Brazil
- Campinas Poison Control Center, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-859, Brazil
| | - Kelly Francisco Cunha
- Campinas Poison Control Center, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-859, Brazil
| | - Rafael Lanaro
- Campinas Poison Control Center, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-859, Brazil
| | - Ricardo Leal Cunha
- Institute of Chemistry, Federal University of Bahia, Salvador, Bahia 40170-115, Brazil
- Institute of Analysis and Forensic Research, Aracaju, Sergipe 49100-000, Brazil
| | - Donna Walther
- Designer Drug Research Unit of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
| | - Michael H. Baumann
- Designer Drug Research Unit of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
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The synthetic cathinones, butylone and pentylone, are stimulants that act as dopamine transporter blockers but 5-HT transporter substrates. Psychopharmacology (Berl) 2019; 236:953-962. [PMID: 30345459 PMCID: PMC6476708 DOI: 10.1007/s00213-018-5075-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 10/10/2018] [Indexed: 12/15/2022]
Abstract
RATIONALE Synthetic cathinones continue to emerge in recreational drug markets worldwide. 1-(1,3-Benzodioxol-5-yl)-2-(methylamino)butan-1-one (butylone) and 1-(1,3-benzodioxol-5-yl)-2-(methylamino)pentan-1-one (pentylone) are derivatives of the cathinone compound, 1-(1,3-benzodioxol-5-yl)-2-(methylamino)propan-1-one (methylone), that are being detected in drug products and human casework. OBJECTIVES The purpose of the present study was to examine the neuropharmacology of butylone and pentylone using in vitro and in vivo methods. METHODS In vitro uptake and release assays were carried out in rat brain synaptosomes and in cells expressing human dopamine transporters (DAT) and 5-HT transporters (SERT). In vivo microdialysis was performed in the nucleus accumbens of conscious rats to assess drug-induced changes in neurochemistry. RESULTS Butylone and pentylone were efficacious uptake blockers at DAT and SERT, though pentylone was more DAT-selective. Both drugs acted as transporter substrates that evoked release of [3H]5-HT at SERT, while neither evoked release at DAT. Consistent with the release data, butylone and pentylone induced substrate-associated inward currents at SERT but not DAT. Administration of butylone or pentylone to rats (1 and 3 mg/kg, i.v.) increased extracellular monoamines and motor activity, but pentylone had weaker effects on 5-HT and stronger effects on motor stimulation. CONCLUSIONS Our data demonstrate that increasing the α-carbon chain length of methylone creates "hybrid" transporter compounds which act as DAT blockers but SERT substrates. Nevertheless, butylone and pentylone elevate extracellular dopamine and stimulate motor activity, suggesting both drugs possess significant risk for abuse.
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Steele TWE, Eltit JM. Using Ca 2+-channel biosensors to profile amphetamines and cathinones at monoamine transporters: electro-engineering cells to detect potential new psychoactive substances. Psychopharmacology (Berl) 2019; 236:973-988. [PMID: 30448989 PMCID: PMC6525079 DOI: 10.1007/s00213-018-5103-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 11/02/2018] [Indexed: 01/20/2023]
Abstract
BACKGROUND The appearance of stimulant-class new psychoactive substances (NPS) is a frequent and significant problem in our society. Cathinone variants are often sold illegally as 3,4-methylenedioxy methamphetamine ("ecstasy") or disguised for legal sale using misleading names such as "bath salts" and carry the risk of promoting disruptive mental states, addiction, and fatal overdose. The principal targets of these recreational drugs are monoamine transporters expressed in catecholaminergic and serotonergic neurons. Some transporter ligands can be transported into cells, where they can promote a massive release of neurotransmitters through reverse transport, and others can block uptake. A ligand's dopamine vs. serotonin transporter selectivity, potency, and activity as a substrate or blocker can help elucidate the abuse liability and subjective effects of a drug. OBJECTIVES Here, we describe the discovery, development, and validation of an emerging methodology for compound activity assessment at monoamine transporters. KEY FINDINGS Substrates generate inward electrical currents through transporters and can depolarize the plasma membrane, whereas blockers work as a "cork in a bottle" and function as antagonists. Voltage-gated Ca2+ channels were co-expressed with monoamine transporters in cultured cells and used to measure fluctuations of the membrane electrical potential. In this system, substrates of monoamine transporters produce reliable dose-dependent Ca2+ signals, while blockers hinder them. DISCUSSION This system constitutes a novel use of voltage-gated Ca2+ channels as biosensors for the purpose of characterizing ligand activity at monoamine transporters using fluorimetry. This approach in combination with in vivo evaluations of drugs' abuse-related effects is a powerful strategy for anticipating potential stimulant-class NPS.
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Affiliation(s)
- Tyler W E Steele
- Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University, 1101 E Marshall St. Rm# 3-038H, Richmond, VA, 23298, USA
| | - Jose M Eltit
- Department of Physiology and Biophysics, School of Medicine, Virginia Commonwealth University, 1101 E Marshall St. Rm# 3-038H, Richmond, VA, 23298, USA.
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Methcathinone and 3-Fluoromethcathinone Stimulate Spontaneous Horizontal Locomotor Activity in Mice and Elevate Extracellular Dopamine and Serotonin Levels in the Mouse Striatum. Neurotox Res 2018; 35:594-605. [PMID: 30377956 PMCID: PMC6420425 DOI: 10.1007/s12640-018-9973-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/07/2018] [Accepted: 10/19/2018] [Indexed: 12/23/2022]
Abstract
Methcathinone (MC) and 3-fluoromethcathinone (3-FMC) are well-known members of the synthetic cathinone derivatives, the second most abused group of novel psychoactive substances (NPS). They are considered as methamphetamine-like cathinones, as they elicit their psychostimulatory effects via inhibition of monoamine uptake and enhanced release. The present study examines the effects of MC and 3-FMC on the spontaneous locomotor activity of mice and extracellular levels of dopamine and serotonin in the mouse striatum. Both MC and 3-FMC produced a dose-dependent increase of horizontal locomotor activity, but no significant changes in rearing behavior were observed. The locomotor stimulation induced by MC and 3-FMC is mediated by activation of dopaminergic neurotransmission, as selective D1-dopamine receptor antagonist, SCH 23390, abolished the effects of both drugs. In line with pharmacological data obtained by previous in vitro studies, MC and 3-FMC produced potent increases of extracellular dopamine and serotonin levels in the mouse striatum. Taken together, results presented within this study confirm previous findings and expand our knowledge on the pharmacology of MC and 3-FMC along with their behavioral effects.
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Ameline A, Richeval C, Gaulier JM, Raul JS, Kintz P. Detection of the designer benzodiazepine flunitrazolam in urine and preliminary data on its metabolism. Drug Test Anal 2018; 11:223-229. [DOI: 10.1002/dta.2480] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 07/31/2018] [Accepted: 08/07/2018] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | | | - Pascal Kintz
- Institut de médecine légale; Strasbourg France
- X-Pertise Consulting, Oberhausbergen; France
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Richeval C, Wille SMR, Nachon-Phanithavong M, Samyn N, Allorge D, Gaulier JM. New psychoactive substances in oral fluid of French and Belgian drivers in 2016. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2018; 57:1-3. [PMID: 29631107 DOI: 10.1016/j.drugpo.2018.03.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 02/28/2018] [Accepted: 03/13/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND Driving under the influence of drugs (DUID) is a worldwide problem with potentially major judiciary and life-threatening consequences. Up to now, only classical drugs of abuse (DOA) are tested for DUID detection. A challenging issue for drafting up-dated international drug policies is to take into account the recent and expanding new psychoactive substances (NPS) market. NPS consist in various narcotic or psychotropic drugs, most of them having a "legal" status, that replicate chemical structures and/or pharmacological effects of classical DOA. Although it is obvious that NPS can lead to impaired driving, the prevalence of NPS use in a DUID context is unknown since the applied roadside screening tests are not yet adapted for these compounds. METHODS Between January and December 2016, a total of 391 oral fluid specimens were obtained from used roadside immunochemical test devices for DOA (Drugwipe-5S® device). These specimens were analyzed using liquid chromatography coupled with tandem mass spectrometry and high resolution mass spectrometry. RESULTS NPS (mainly cathinone derivatives) were detected in 33 out of the 391 oral fluid samples. This NPS positivity rate of 8.4% in oral fluid of drivers who were submitted to a roadside drug testing in 2016 in France and in Belgium is comparable to the available blood data (NPS positivity rate of 7%) observed in 2015 in similar populations. CONCLUSION Our results demonstrate the reality of driving after NPS use in French and Belgian drivers who were submitted to a roadside DOA test. As there is a lack of on-site detection methods to screen for NPS, the detection of NPS in a rapid and cost-effective DUID detection strategy is currently impossible. The expanding use of NPS, notably by drivers as reported here, and the inability of currently used drug detection tests, should be urgently addressed by road safety and law enforcement authorities.
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Affiliation(s)
- Camille Richeval
- CHU Lille, Unité Fonctionnelle de Toxicologie, F-59000 Lille, France; University of Lille, EA 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000 Lille, France.
| | - Sarah Maria Richarda Wille
- Federal Public Service Justice, National Institute of Criminalistics and Criminology, Brussels, Belgium.
| | | | - Nele Samyn
- Federal Public Service Justice, National Institute of Criminalistics and Criminology, Brussels, Belgium.
| | - Delphine Allorge
- CHU Lille, Unité Fonctionnelle de Toxicologie, F-59000 Lille, France; University of Lille, EA 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000 Lille, France.
| | - Jean-Michel Gaulier
- CHU Lille, Unité Fonctionnelle de Toxicologie, F-59000 Lille, France; University of Lille, EA 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé humaine, F-59000 Lille, France.
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McGrew H, Ruble M. Updates on Novel Illicit Drugs: What Practitioners Should Be Aware Of. J Emerg Nurs 2017; 43:591-592. [PMID: 29100577 DOI: 10.1016/j.jen.2017.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Javadi-Paydar M, Nguyen JD, Vandewater SA, Dickerson TJ, Taffe MA. Locomotor and reinforcing effects of pentedrone, pentylone and methylone in rats. Neuropharmacology 2017; 134:57-64. [PMID: 28882561 DOI: 10.1016/j.neuropharm.2017.09.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 09/01/2017] [Accepted: 09/03/2017] [Indexed: 11/27/2022]
Abstract
The broad diversity of synthetic cathinone psychostimulant drugs that are available to users complicates research efforts to provide understanding of health risks. Second generation cathinones pentedrone and pentylone are distinguished from each other by the 3,4-methylenedioxy structural motif (which distinguishes methamphetamine from 3,4-methylenedioxymethamphetamine) and each incorporates the α-alkyl chain motif contained in the transporter-inhibitor cathinones (3,4-methylenedioxypyrovalerone (MDPV), α-pyrrolidinopentiophenone (α-PVP)) but not in the monoamine releasers (mephedrone, methylone). Studies were conducted in male and female Wistar rats to compare locomotor and thermoregulatory effects of pentedrone, pentylone and methylone using an implanted radiotelemetry system. Reinforcing effects were assessed in female Wistar rats trained in the intravenous self-administration (IVSA) procedure and subjected to dose-substitution (0.025-0.3 m/gkg/inf) under a fixed-ratio 1 response contingency. Pentedrone, pentylone and methylone dose-effect curves were contrasted with those for α-PVP and α-pyrrolidinohexiophenone (α-PHP). Dose dependent increases in locomotion were observed after intraperitoneal injection of pentylone (0.5-10.0 mg/kg), pentedrone (0.5-10.0 mg/kg) or mephedrone (0.5-10.0 mg/kg) in male and female rats. The maximum locomotor effect was similar across drugs but lasted longest after pentedrone. Mean body temperature did not vary systematically more than 0.5 °C after pentedrone or pentylone in either sex. A sustained hyperthermia (0.4-0.8 °C) was observed for four hours after 10.0 mg/kg methylone in male rats. More infusions of pentedrone or pentylone were self-administered compared with methylone, but all three were less potent than α-PVP or α-PHP. These studies support the inference that second generation cathinones pentylone and pentedrone have abuse liability greater than that of methylone. This article is part of the Special Issue entitled 'Designer Drugs and Legal Highs.'
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Affiliation(s)
| | - Jacques D Nguyen
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Sophia A Vandewater
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA
| | - Tobin J Dickerson
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Michael A Taffe
- Department of Neuroscience, The Scripps Research Institute, La Jolla, CA, USA.
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Baumann MH, Majumdar S, Le Rouzic V, Hunkele A, Uprety R, Huang XP, Xu J, Roth BL, Pan YX, Pasternak GW. Pharmacological characterization of novel synthetic opioids (NSO) found in the recreational drug marketplace. Neuropharmacology 2017; 134:101-107. [PMID: 28807672 DOI: 10.1016/j.neuropharm.2017.08.016] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/28/2017] [Accepted: 08/10/2017] [Indexed: 10/19/2022]
Abstract
Novel synthetic opioids (NSO) are increasingly encountered in illicit heroin and counterfeit pain pills. Many NSO are resurrected from older biomedical literature or patent applications, so limited information is available about their biological effects. Here we examined the pharmacology of three structurally-distinct NSO found in the recreational drug market: N-(1-(2-phenylethyl)-4-piperidinyl)-N-phenylbutyramide (butyrylfentanyl), 3,4-dichloro-N-[(1R,2R)-2-(dimethylamino)cyclohexyl]-N-methylbenzamide (U-47700) and 1-cyclohexyl-4-(1,2-diphenylethyl)piperazine (MT-45). Radioligand binding and GTPγS functional assays were carried out in cells transfected with murine mu- (MOR-1), delta- (DOR-1) or kappa-opioid receptors (KOR-1). Antinociceptive effects were determined using the radiant heat tail flick technique in mice, and opioid specificity was assessed with the mu-opioid antagonist naloxone. Butyrylfentanyl, U-47700 and MT-45 displayed nM affinities at MOR-1, but were less potent than morphine, and had much weaker effects at DOR-1 and KOR-1. All NSO exhibited agonist actions at MOR-1 in the GTPγS assay. Butyrylfentanyl and U-47700 were 31- and 12-fold more potent than morphine in the tail flick assay, whereas MT-45 was equipotent with morphine. Analgesic effects were reversed by naloxone and absent in genetically-engineered mice lacking MOR-1. Our findings confirm that butyrylfentanyl, U-47700 and MT-45 are selective MOR-1 agonists with in vitro affinities less than morphine. However, analgesic potencies vary more than 30-fold across the compounds, and in vitro binding affinity does not predict in vivo potency. Taken together, our findings highlight the risks to humans who may unknowingly be exposed to these and other NSO when taking adulterated heroin or counterfeit pain medications. This article is part of the Special Issue entitled 'Designer Drugs and Legal Highs.'
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Affiliation(s)
- Michael H Baumann
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD 21224, USA.
| | - Susruta Majumdar
- Department of Neurology and Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | - Valerie Le Rouzic
- Department of Neurology and Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | - Amanda Hunkele
- Department of Neurology and Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | - Rajendra Uprety
- Department of Neurology and Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | - Xi Ping Huang
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Jin Xu
- Department of Neurology and Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | - Bryan L Roth
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Ying-Xian Pan
- Department of Neurology and Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
| | - Gavril W Pasternak
- Department of Neurology and Molecular Pharmacology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
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Abstract
Novel synthetic opioids (NSOs) include various analogs of fentanyl and newly emerging non-fentanyl compounds. Together with illicitly manufactured fentanyl (IMF), these drugs have caused a recent spike in overdose deaths, whereas deaths from prescription opioids have stabilized. NSOs are used as stand-alone products, as adulterants in heroin, or as constituents of counterfeit prescription medications. During 2015 alone, there were 9580 deaths from synthetic opioids other than methadone. Most of these fatalities were associated with IMF rather than diverted pharmaceutical fentanyl. In opioid overdose cases, where the presence of fentanyl analogs was examined, analogs were implicated in 17% of fatalities. Recent data from law enforcement sources show increasing confiscation of acetylfentanyl, butyrylfentanyl, and furanylfentanyl, in addition to non-fentanyl compounds such as U-47700. Since 2013, deaths from NSOs in the United States were 52 for acetylfentanyl, 40 for butyrylfentanyl, 128 for furanylfentanyl, and 46 for U-47700. All of these substances induce a classic opioid toxidrome, which can be reversed with the competitive antagonist naloxone. However, due to the putative high potency of NSOs and their growing prevalence, it is recommended to forgo the 0.4 mg initial dose of naloxone and start with 2 mg. Because NSOs offer enormous profit potential, and there is strong demand for their use, these drugs are being trafficked by organized crime. NSOs present major challenges for medical professionals, law enforcement agencies, and policymakers. Resources must be distributed equitably to enhance harm reduction though public education, medication-assisted therapies, and improved access to naloxone.
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Van Buskirk J, Griffiths P, Farrell M, Degenhardt L. Trends in new psychoactive substances from surface and "dark" net monitoring. Lancet Psychiatry 2017; 4:16-18. [PMID: 28012470 DOI: 10.1016/s2215-0366(16)30405-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 11/17/2016] [Indexed: 11/18/2022]
Affiliation(s)
- Joe Van Buskirk
- National Drug and Alcohol Research Centre, UNSW Australia, Sydney NSW 2052, Australia
| | - Paul Griffiths
- European Monitoring Centre on Drugs and Drug Addiction, Lisbon, Portugal
| | - Michael Farrell
- National Drug and Alcohol Research Centre, UNSW Australia, Sydney NSW 2052, Australia
| | - Louisa Degenhardt
- National Drug and Alcohol Research Centre, UNSW Australia, Sydney NSW 2052, Australia.
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Baumann MH, Bukhari MO, Lehner KR, Anizan S, Rice KC, Concheiro M, Huestis MA. Neuropharmacology of 3,4-Methylenedioxypyrovalerone (MDPV), Its Metabolites, and Related Analogs. Curr Top Behav Neurosci 2017; 32:93-117. [PMID: 27830575 PMCID: PMC5392131 DOI: 10.1007/7854_2016_53] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
3,4-Methylenedioxypyrovalerone (MDPV) is a psychoactive component of so-called bath salts products that has caused serious medical consequences in humans. In this chapter, we review the neuropharmacology of MDPV and related analogs, and supplement the discussion with new results from our preclinical experiments. MDPV acts as a potent uptake inhibitor at plasma membrane transporters for dopamine (DAT) and norepinephrine (NET) in nervous tissue. The MDPV formulation in bath salts is a racemic mixture, and the S isomer is much more potent than the R isomer at blocking DAT and producing abuse-related effects. Elevations in brain extracellular dopamine produced by MDPV are likely to underlie its locomotor stimulant and addictive properties. MDPV displays rapid pharmacokinetics when injected into rats (0.5-2.0 mg/kg), with peak plasma concentrations achieved by 10-20 min and declining quickly thereafter. MDPV is metabolized to 3,4-dihydroxypyrovalerone (3,4-catechol-PV) and 4-hydroxy-3-methoxypyrovalerone (4-OH-3-MeO-PV) in vivo, but motor activation produced by the drug is positively correlated with plasma concentrations of parent drug and not its metabolites. 3,4-Catechol-PV is a potent uptake blocker at DAT in vitro but has little activity after administration in vivo. 4-OH-3-MeO-PV is the main MDPV metabolite but is weak at DAT and NET. MDPV analogs, such as α-pyrrolidinovalerophenone (α-PVP), display similar ability to inhibit DAT and increase extracellular dopamine concentrations. Taken together, these findings demonstrate that MDPV and its analogs represent a unique class of transporter inhibitors with a high propensity for abuse and addiction.
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Affiliation(s)
- Michael H Baumann
- Designer Drug Research Unit of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA.
| | - Mohammad O Bukhari
- Designer Drug Research Unit of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
| | - Kurt R Lehner
- Designer Drug Research Unit of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
| | - Sebastien Anizan
- Chemistry and Drug Metabolism Section of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
| | - Kenner C Rice
- Drug Design and Synthesis Section of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
| | - Marta Concheiro
- Chemistry and Drug Metabolism Section of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
- Department of Sciences, John Jay College of Criminal Justice, City University of New York, New York, NY, USA
| | - Marilyn A Huestis
- Chemistry and Drug Metabolism Section of the Intramural Research Program, National Institute on Drug Abuse (NIDA), National Institutes of Health, Baltimore, MD, USA
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