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https://www.readbyqxmd.com/read/28815279/evaluation-of-training-dose-in-male-sprague-dawley-rats-trained-to-discriminate-4-methylmethcathinone
#1
Michael D Berquist, Nathyn A Thompson, Lisa E Baker
RATIONALE: Although the synthetic cathinone 4-methylmethcathinone (4-MMC, mephedrone) has been a subject of intensive research investigation, the pharmacological mechanisms involved in its interoceptive stimulus effects have yet to be fully characterized. OBJECTIVE: The present study employed drug discrimination methods in rats to compare the interoceptive stimulus properties of two different training doses of 4-MMC to other substances with similar pharmacological actions...
August 16, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28814125/recreational-drug-use-at-a-major-music-festival-trend-analysis-of-anonymised-pooled-urine
#2
Lotte Christine Groth Hoegberg, Cecilie Christiansen, Jesper Soe, Rasmus Telving, Mette Findal Andreasen, Dan Staerk, Lona Louring Christrup, Kenneth Thermann Kongstad
OBJECTIVE: The spread of new psychoactive substances (NPS) has expanded rapidly in the last decade. The complexity of the pharmacological effects of NPS challenges the traditional treatment guidelines, and information of the emergence of new arrivals is valuable. Our knowledge on the actual range of recreational drugs used and NPS available in Denmark is limited as identification is possible only when consumers become patients in the healthcare system or through drug seizures. We aimed to detect classical recreational drugs and NPS in the urine of music festival attendees and evaluate if the use of NPS could have been predicted by comparing study data with drug seizure data from the previous year published by European and Danish health authorities...
August 17, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28814122/flibanserin-toxicity-in-a-toddler-following-ingestion
#3
Nicholas Granzella, Betty C Chen, Geoffrey S Baird, Matthew Valento
INTRODUCTION: Flibanserin is a medication recently approved by the FDA for treatment of generalized hypoactive sexual desire disorder (HSDD) in premenopausal women. Its mechanism of action is not fully understood but is thought to modulate serotonin receptors and increase levels of norepinephrine and dopamine. While much is known about toxicity of other drugs which affect these systems, there is little information about toxicity of flibanserin at this time. CASE: We present a case of a 2-year-old boy who ingested an estimated 600 mg of his mother's flibanserin...
August 17, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28811141/the-pharmacokinetic-profile-of-synthetic-cathinones-in-a-pregnancy-model
#4
Lauren G Strange, Kerri Kochelek, Robert Keasling, Stacy D Brown, Brooks B Pond
In recent years, the abuse of synthetic cathinones or 'bath salts' has become a major public health concern. Although these compounds were initially sold legally and labeled "not for human consumption", the 'bath salts' are psychostimulants, with similar structures and pharmacologic mechanisms to cocaine, the amphetamines, and 3,4 methylendioxymethamphetamine (MDMA, Molly, or Ecstasy). The reported use of these substances by women of child-bearing age highlights the necessity of studies seeking to delineate risks of prenatal exposure...
August 12, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28810159/hair-testing-to-assess-both-known-and-unknown-use-of-drugs-amongst-ecstasy-users-in-the-electronic-dance-music-scene
#5
Joseph J Palamar, Alberto Salomone, Enrico Gerace, Daniele Di Corcia, Marco Vincenti, Charles M Cleland
BACKGROUND: Data on both known and unknown drug use in the electronic dance music (EDM) scene is important to inform prevention and harm reduction. While surveys are the most common method of querying drug use, additional biological data can help validate use and detect unknown/unintentional use of drugs such as new psychoactive substances (NPS). We sought to determine the extent of both known and unknown use of various substances in this high-risk scene. METHODS: We hair-tested 90 self-reported past-year ecstasy/MDMA/Molly users attending EDM parties in New York City during the summer of 2016 using UHPLC-MS/MS...
August 12, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28802951/smoke-on-the-water-oral-fluid-analysis-at-sea
#6
Andrew Griffiths, Richard Leonars, Lenore Hadley, Mark Stephenson, Richard Teale
This study outlines the operational challenges and findings of an illicit drug oral fluid testing program carried out on the skippers (those in charge) of water vessels in Queensland, Australia. Between 2010 and 2016, 953 tests of skippers were conducted on water (waterside) for three proscribed illicit drugs; delta-9-tetrahydrocannabinol (THC), methylamphetamine (MA) and 3,4-methylendioxymethylamphetamine (MDMA). 126 (13%) of the skippers tested returned an on-site positive during waterside testing, 125 were confirmed positive for one or more illicit drug by subsequent laboratory analysis, whilst one skipper did not provide an oral fluid sample for confirmatory analysis...
July 31, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28801175/mdma-and-brain-activity-during-neurocognitive-performance-an-overview-of-neuroimaging-studies-with-abstinent-ecstasy-users
#7
REVIEW
C A Roberts, B B Quednow, C Montgomery, A C Parrott
MDMA/Ecstasy has had a resurgence in popularity, with recent supplies comprising higher strength MDMA, potentially leading to increased drug-related harm. Neurocognitive problems have been widely reported in ecstasy users, equally some studies report null findings, and it remains unclear which factors underlie the development of neurocognitive impairments. This review covers the empirical research into brain activity during neurocognitive performance, using fMRI, fNIRS, and EEG. Our main conclusion is that chronic repeated use of recreational ecstasy can result in haemodynamic and electrophysiological changes that reflect recruitment of additional resources to perform cognitive tasks...
August 8, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28783904/five-year-monitoring-of-19-illicit-and-legal-substances-of-abuse-at-the-inlet-of-a-wastewater-treatment-plant-in-barcelona-ne-spain-and-estimation-of-drug-consumption-patterns-and-trends
#8
Nicola Mastroianni, Ester López-García, Cristina Postigo, Damià Barceló, Miren López de Alda
Illicit and legal drugs of abuse, including alcohol, continue to be in the focus of many governmental national and international studies due to the important consequences of their consumption at both individual and social level. Estimation of drug use at the community level from the concentrations of the drugs themselves or their major metabolites measured in wastewater has become an increasingly accepted and extended tool, complementary to the methods traditionally used for this purpose. The present work describes the application of this approach, generally known as wastewater epidemiology, to investigate the latest drug consumption patterns and trends in the European city of Barcelona...
July 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28783586/dynamic-surface-enhanced-raman-spectroscopy-and-chemometric-methods-for-fast-detection-and-intelligent-identification-of-methamphetamine-and-3-4-methylenedioxy-methamphetamine-in-human-urine
#9
Shizhuang Weng, Ronglu Dong, Zede Zhu, Dongyan Zhang, Jinling Zhao, Linsheng Huang, Dong Liang
Conventional Surface-Enhanced Raman Spectroscopy (SERS) for fast detection of drugs in urine on the portable Raman spectrometer remains challenges because of low sensitivity and unreliable Raman signal, and spectra process with manual intervention. Here, we develop a novel detection method of drugs in urine using chemometric methods and dynamic SERS (D-SERS) with mPEG-SH coated gold nanorods (GNRs). D-SERS combined with the uniform GNRs can obtain giant enhancement, and the signal is also of high reproducibility...
August 2, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28768346/-psychotherapy-with-adjuvant-use-of-serotonergic-psychoactive-substances-possibilities-and-challenges
#10
Tomislav Majić, Henrik Jungaberle, Timo T Schmidt, Andrea Zeuch, Leo Hermle, Jürgen Gallinat
Background Recently, scientific interest in the therapeutic potential of serotonergic and psilocybin hallucinogens (psychedelics) such as lysergic acid diethylamide (LSD) and entactogens like 3,4-methylendioxymethamphetamine (MDMA) within the framework of psychotherapy has resumed. The present article provides an overview on the current evidence on substance-assisted psychotherapy with these substances. Method A selective search was carried out in the PubMed and Cochrane Library including studies investigating the clinical use of serotonergic psychoactive substances since 2000...
July 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28766722/fatal-diabetic-ketoacidosis-a-potential-complication-of-mdma-ecstasy-use
#11
John D Gilbert, Roger W Byard
A 19-year-old woman with insulin-dependent diabetes mellitus was found dead in bed having allegedly recently taken ecstasy and consumed alcohol. At autopsy, there were microhemorrhages in the brain with subnuclear vacuolization and Armanni-Ebstein changes in renal tubules. Biochemical analyses confirmed diabetic ketoacidosis (vitreous glucose-46.5 mmol/L; β-OH butyrate-13.86 mmol/L.). Toxicological analyses of blood showed a low level of 3,4-methylenedioxy-methamphetamine (MDMA) (0.01 mg/L), with acetone but no alcohol or other common drugs...
August 2, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28766260/erratum-to-mdma-induced-indifference-to-negative-sounds-is-mediated-by-the-5-ht2a-receptor
#12
K P C Kuypers, R de la Torre, M Farre, N Pizarro, L Xicota, J G Ramaekers
No abstract text is available yet for this article.
August 1, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28744219/mdma-induced-dissociative-state-not-mediated-by-the-5-ht2a-receptor
#13
Drew J Puxty, Johannes G Ramaekers, Rafael de la Torre, Magí Farré, Neus Pizarro, Mitona Pujadas, Kim P C Kuypers
Previous research has shown that a single dose of MDMA induce a dissociative state, by elevating feelings of depersonalization and derealization. Typically, it is assumed that action on the 5-HT2A receptor is the mechanism underlying these psychedelic experiences. In addition, other studies have shown associations between dissociative states and biological parameters (heart rate, cortisol), which are elevated by MDMA. In order to investigate the role of the 5-HT2 receptor in the MDMA-induced dissociative state and the association with biological parameters, a placebo-controlled within-subject study was conducted including a single oral dose of MDMA (75 mg), combined with placebo or a single oral dose of the 5-HT2 receptor blocker ketanserin (40 mg)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28743199/3-4-methylenedioxymethamphetamine-causes-cytotoxicity-on-661w-cells-through-inducing-macrophage-polarization
#14
Xin Liu, Li-Hui Zhan, Xiao-Hong Sun, Tao Zhang, Zhi-Li Liu, Xiao-Fang Liang, Fei Zhao, Fang Liu, Guang Zeng, Chun-Sheng Luan
The abuse of 3,4-methylenedioxymethamphetamine (MDMA), a psychedelic drug, can lead to a variety of disorders in neural system, including the death of retinal neural cells. MDMA at lower doses does not cause obvious cytotoxicity to photoreceptor cells, indicating potential indirect mechanisms which have not yet been elucidated. This study investigated the effect of MDMA at nontoxic concentration on macrophage activation state and its resultant toxicity to photoreceptor cells. Using a co-culture system, cytotoxicity was caused by MDMA on 661W cells after co-culturing with RAW264...
August 16, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28741031/inhibition-of-serotonin-transporters-disrupts-the-enhancement-of-fear-memory-extinction-by-3-4-methylenedioxymethamphetamine-mdma
#15
Matthew B Young, Seth D Norrholm, Lara M Khoury, Tanja Jovanovic, Sheila A M Rauch, Collin M Reiff, Boadie W Dunlop, Barbara O Rothbaum, Leonard L Howell
RATIONALE: 3,4-Methylenedioxymethamphetamine (MDMA) persistently improves symptoms of post-traumatic stress disorder (PTSD) when combined with psychotherapy. Studies in rodents suggest that these effects can be attributed to enhancement of fear memory extinction. Therefore, MDMA may improve the effects of exposure-based therapy for PTSD, particularly in treatment-resistant patients. However, given MDMA's broad pharmacological profile, further investigation is warranted before moving to a complex clinical population...
July 24, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28735368/mdma-induced-indifference-to-negative-sounds-is-mediated-by-the-5-ht2a-receptor
#16
K P C Kuypers, R de la Torre, Farre, N Pizarro, L Xicota, J G Ramaekers
BACKGROUND: MDMA has been shown to induce feelings of sociability, a positive emotional bias and enhanced empathy. While previous research has used only visual emotional stimuli, communication entails more than that single dimension and it is known that auditory information is also crucial in this process. In addition, it is, however, unclear what the neurobiological mechanism underlying these MDMA effects on social behaviour is. Previously, studies have shown that MDMA-induced emotional excitability and positive mood are linked to the action on the serotonin (5-HT) 2A receptor...
July 22, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28733094/isolated-non-cardiogenic-pulmonary-edema-a-rare-complication-of-mdma-toxicity
#17
Astrid Haaland, Elliot Warman, Illya Pushkar, Antonios Likourezos, Matt S Friedman
This is a case of a 19-year-old male who presented to the medical tent at an outdoor electronic dance music festival (EDMF) due to an altered mental state in the setting of acute 3,4-methylenedioxymethamphetamine (MDMA) intoxication. He was noted to be in severe respiratory distress, required endotracheal intubation in the field and subsequently developed Acute Respiratory Distress Syndrome (ARDS) without other acute organ dysfunction. He was hospitalized for 5days requiring endotracheal intubation and mechanical ventilation...
June 27, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28722422/first-time-view-on-human-metabolome-changes-after-a-single-intake-of-3-4-methylenedioxymethamphetamine-mdma-in-healthy-placebo-controlled-subjects
#18
Martina I Boxler, Matthias E Liechti, Yasmin Schmid, Thomas Kraemer, Andrea E Steuer
3,4-methylenedioxymethamphetamine (MDMA; 'ecstasy') is widely consumed recreationally. Currently little is known about its effects on the human metabolome. Mapping biochemical changes after drug exposure can complement traditional approaches by revealing potential biomarkers of organ toxicity or discovering new metabolomic features in a time- and dose-dependent manner. We aimed to analyze for the first time plasma samples from a randomized, double-blind, placebo-controlled crossover study in healthy adults to explore changes in endogenous plasma metabolites following a single intake of MDMA...
July 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28693371/who-is-molly-mdma-adulterants-by-product-name-and-the-impact-of-harm-reduction-services-at-raves
#19
Sarah Saleemi, Steven J Pennybaker, Missi Wooldridge, Matthew W Johnson
Methylenedioxymethamphetamine (MDMA), often sold as 'Ecstasy' or 'Molly', is commonly used at music festivals and reported to be responsible for an increase in deaths over the last decade. Ecstasy is often adulterated and contains compounds that increase morbidity and mortality. While users and clinicians commonly assume that products sold as Molly are less-adulterated MDMA products, this has not been tested. Additionally, while pill-testing services are sometimes available at raves, the assumption that these services decrease risky drug use has not been studied...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28681613/the-toxicological-significance-of-post-mortem-drug-concentrations-in-bile
#20
Robin E Ferner, Jeffrey K Aronson
CONTEXT: Some authors have proposed that post-mortem drug concentrations in bile are useful in estimating concentrations in blood. Both The International Association of Forensic Toxicologists (TIAFT) and the US Federal Aviation Administration recommend that samples of bile should be obtained in some circumstances. Furthermore, standard toxicological texts compare blood and bile concentrations, implying that concentrations in bile are of forensic value. AIM: To review the evidence on simultaneous measurements of blood and bile drug concentrations reported in the medical literature...
July 6, 2017: Clinical Toxicology
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