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https://www.readbyqxmd.com/read/28087314/a-protective-role-of-cumulus-cells-after-short-term-exposure-of-rat-cumulus-cell-oocyte-complexes-to-lifestyle-or-environmental-contaminants
#1
Kelly A Campen, Kenneth P McNatty, Janet L Pitman
Ovarian follicular fluid provides a potential reservoir for exogenous compounds that may adversely affect oocyte quality. This study examined the effects of common lifestyle and environmental contaminants, namely bisphenol-A (BPA), caffeine, 3,4-methylenedioxymethamphetamine (MDMA), nicotine and Δ(9)-tetrahydrocannabinol on gap junction genes (Gja1, Gja4) and proteins (GJA1), glucose metabolism genes (Gfpt1, Pfkp) and oocyte growth factor genes (Bmp15, Gdf9), as well as gap junction transfer rate, in rat cumulus-oocyte complexes (COCs)...
January 10, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28073060/acute-behavioral-effects-of-co-administration-of-mephedrone-and-mdma-in-mice
#2
Barbara Budzynska, Agnieszka Michalak, Małgorzata Frankowska, Katarzyna Kaszubska, Grażyna Biała
BACKGROUND: Abuse of more than one psychoactive drug is becoming a global problem. Our experiments were designed to examine the effects of a concomitant administration of 3,4-methylenedioxy-methamphetamine (MDMA) and mephedrone on depression- and anxiety-like behaviors and cognitive processes in Swiss mice. METHODS: In order to investigate the drug interactions the forced swimming test (FST) - an animal model of depression, the passive avoidance (PA) test - a memory and learning paradigm, as well as the elevated plus maze (EPM) test - test for anxiety level were used...
October 11, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28067045/neurotoxicity-of-%C3%AE-keto-amphetamines-deathly-mechanisms-elicited-by-methylone-and-mdpv-in-human-dopaminergic-sh-sy5y-cells
#3
Maria Joao Valente, Maria Lourdes Bastos, Eduarda Fernandes, Félix Carvalho, Paola Guedes de Pinho, Marcia Carvalho
Synthetic cathinones (β-keto amphetamines) act as potent CNS stimulants similarly to classical amphetamines, which raise concerns about their potential neurotoxic effects. The present in vitro study aimed to explore and compare the mechanisms underlying the neurotoxicity of two commonly abused cathinone derivatives, 3,4-methylenedioxymethcathinone (methylone) and 3,4-methylenedioxypyrovalerone (MDPV), with those of 3,4-methylenedioxymethamphetamine (MDMA), using undifferentiated and differentiated SH-SY5Y cells...
January 9, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28027812/new-psychoactive-substances-nps-on-cryptomarket-fora-an-exploratory-study-of-characteristics-of-forum-activity-between-nps-buyers-and-vendors
#4
Marie Claire Van Hout, Evelyn Hearne
BACKGROUND: The continual diversification of new psychoactive substances (NPS) circumventing legislation creates a public health and law enforcement challenge, and one particularly challenged by availability on Hidden Web cryptomarkets. METHODS: This is the first study of its kind which aimed to explore and characterise cryptomarket forum members' views and perspectives on NPS vendors and products within the context of Hidden Web community dynamics. An internal site search was conducted on two cryptomarkets popular with NPS vendors and hosting fora; Alphabay and Valhalla, using the search terms of 40 popular NPS in the seven categories of stimulant/cathinone; GABA activating; hallucinogen, dissociative, cannabinoid, opioid and other/unspecified/uncategorised NPS...
December 24, 2016: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28012094/clinical-pharmacology-of-the-synthetic-cathinone-mephedrone
#5
Esther Papaseit, José Moltó, Robert Muga, Marta Torrens, Rafael de la Torre, Magí Farré
4-Methyl-N-methylcathinone (mephedrone) is a popular new psychoactive substance (NPS) that is structurally related to the parent compound cathinone, the β-keto analogue of amphetamine. Mephedrone appeared on the street drug market as a substitute for 3,4-methylenedioxy-N-methylamphetamine (MDMA, ecstasy) and was subsequently banned due to the potential health risks associated with its use. Nevertheless, mephedrone continues to be widely consumed among specific populations, with unique patterns of misuse. To date, most information about the biological effects of mephedrone comes from user experiences, epidemiological data, clinical cases, toxicological findings, and animal studies, whilst there are very few data regarding its human pharmacodynamics and pharmacokinetics...
December 24, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27989838/opioid-gene-expression-changes-and-post-translational-histone-modifications-at-promoter-regions-in-the-rat-nucleus-accumbens-after-acute-and-repeated-3-4-methylenedioxy-methamphetamine-mdma-exposure
#6
Francesca Felicia Caputi, Martina Palmisano, Lucia Carboni, Sanzio Candeletti, Patrizia Romualdi
The recreational drug of abuse 3,4-methylenedioxymethamphetamine (MDMA) has been shown to produce neurotoxic damage and long-lasting changes in several brain areas. In addition to the involvement of serotoninergic and dopaminergic systems, little information exists about the contribution of nociceptin/orphaninFQ (N/OFQ)-NOP and dynorphin (DYN)-KOP systems in neuronal adaptations evoked by MDMA. Here we investigated the behavioral and molecular effects induced by acute (8mg/kg) or repeated (8mg/kg twice daily for seven days) MDMA exposure...
October 29, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27978861/a-prospective-analysis-of-patients-presenting-for-medical-attention-at-a-large-electronic-dance-music-festival
#7
Matt S Friedman, Alex Plocki, Antonios Likourezos, Illya Pushkar, Andrew N Bazos, Christian Fromm, Benjamin W Friedman
Mass-Gathering Medicine studies have identified variables that predict greater patient presentation rates (PPRs) and transport to hospital rates (TTHRs). This is a descriptive report of patients who presented for medical attention at an annual electronic dance music festival (EDMF). At this large, single EDMF in New York City (NYC; New York, USA), the frequency of patient presentation, the range of presentations, and interventions performed were identified. This descriptive report examined consecutive patients who presented to the medical tent of a summertime EDMF held at an outdoor venue with an active, mobile, bounded crowd...
December 16, 2016: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/27941910/effects-of-dextromethorphan-on-mdma-induced-serotonergic-aberration-in-the-brains-of-non-human-primates-using-123-i-adam-spect
#8
Kuo-Hsing Ma, Tsung-Ta Liu, Shao-Ju Weng, Chien-Fu F Chen, Yuahn-Sieh Huang, Sheau-Huei Chueh, Mei-Hsiu Liao, Kang-Wei Chang, Chi-Chang Sung, Te-Hung Hsu, Wen-Sheng Huang, Cheng-Yi Cheng
3,4-Methylenedioxymethamphetamine (MDMA), a common recreational drug, is known to cause serotonergic neurotoxicity in the brain. Dextromethorphan (DM) is a widely used antitussive reported to exert anti-inflammatory effect in vivo. In this study, we examined the long-term effect of MDMA on the primate serotonergic system and the protective property of DM against MDMA-induced serotonergic abnormality using single photon emission computed tomography (SPECT). Nine monkeys (Macaca cyclopis) were divided into three groups, namely control, MDMA and co-treatment (MDMA/DM)...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27936427/an-observed-rise-in-%C3%AE-hydroxybutyrate-associated-deaths-in-london-evidence-to-suggest-a-possible-link-with-concomitant-rise-in-chemsex
#9
Joanna Hockenhull, Kevin G Murphy, Sue Paterson
BACKGROUND: Gamma-hydroxybutyrate (GHB) is the drug most linked to acute harm out of those used in chemsex, the incidence of which is reported to be increasing. However, there have been few systematic studies of the harms associated with GHB use. We investigated GHB-associated deaths from London coroners' jurisdictions between 2011 and 2015. METHODS: Blood and urine samples were collected by pathologists and submitted for toxicological analysis at the request of coroners...
December 2, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27936426/statistical-comparison-of-mass-spectra-for-identification-of-amphetamine-type-stimulants
#10
Melissa A Bodnar Willard, Victoria L McGuffin, Ruth Waddell Smith
A method for the statistical comparison of mass spectral data is demonstrated for applications in controlled substance analysis. The method uses an unequal variance t-test at each mass-to-charge ratio in the scan range to determine if two spectra are statistically associated or discriminated. If the two spectra are associated, a random-match probability is calculated to estimate the likelihood that the mass spectral fragmentation pattern in question occurs by random chance alone. If the two spectra are discriminated, the fragment ions responsible for the discrimination are determined...
November 22, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27936283/purity-adulteration-and-price-of-drugs-bought-online-versus-offline-in-the-netherlands
#11
Daan van der Gouwe, Tibor M Brunt, Margriet van Laar, Peggy van der Pol
BACKGROUND AND AIMS: Online drug markets flourish and consumers have high expectations of online quality and drug value. The aim of this study was to i) describe online drug purchases, and ii) compare online with offline purchased drugs regarding purity, adulteration and price. DESIGN: Comparison of lab analyses of 32,663 drug consumer samples (stimulants and hallucinogens) purchased between January 2013 and January 2016, of which 928 were bought online. SETTING: The Netherlands...
December 9, 2016: Addiction
https://www.readbyqxmd.com/read/27925866/there-s-something-about-molly-the-underresearched-yet-popular-powder-form-of-ecstasy-in-the-united-states
#12
Joseph J Palamar
Molly has been the street name for powder or crystalline ecstasy (3,4-methylenedioxymethamphetamine [MDMA]) in the United States since the early 2000s; however, few studies have examined Molly use or included Molly in the definition of ecstasy/MDMA. Prevalence of self-reported ecstasy use is being underreported on surveys due to the lack of inclusion of "Molly," although Molly is often so adulterated with novel psychoactive substances such as synthetic cathinones ("bath salts") that the name "Molly" may no longer adequately represent ecstasy/MDMA...
December 7, 2016: Substance Abuse
https://www.readbyqxmd.com/read/27922542/generalization-of-serotonin-and-dopamine-ligands-to-the-discriminative-stimulus-effects-of-different-doses-of-%C3%A2-3-4-methylenedioxymethamphetamine
#13
Jeremy I Webster, David N Harper, Susan Schenk
Studies that have attributed the discriminative stimulus effects of ±3,4-methylenedioxymethamphetamine (MDMA) to serotonergic mechanisms typically use a relatively low training dose of 1.5 mg/kg. The role of serotonin in the discriminative stimulus effects of higher doses of MDMA is, however, unknown. Separate groups of rats were trained to discriminate MDMA (1.5 or 3.0 mg/kg) from saline using a two-lever, food-reinforced drug-discrimination procedure. Generalization tests were carried out with a range of serotonin and dopamine ligands...
December 2, 2016: Behavioural Pharmacology
https://www.readbyqxmd.com/read/27917269/ecstasy-mdma-and-its-effects-on-kidneys-and-their-treatment-a-review
#14
REVIEW
Feyza Bora, Fatih Yılmaz, Taner Bora
Ecstasy (MDMA; 3,4-methylenedioxymethylamphetamine) is an illicit drug that has been increasingly abused by young people. Its effects include euphoria, enhanced sociability and heightened mental awareness. These come about via the increase of serotonin in both the central nervous system and the sympathetic nervous system. Despite the drug's prevalent abuse, serious or adverse effects are rare. Due to personal pharmacokinetics, effects from the same dosage vary according to the individual. Fatal instances may include acute hyponatremia, hyperthermia (>42 °C), disseminated intravascular coagulation (DIC) resulting from hyperthermia affecting the kidneys, and non-traumatic rhabdomyolysis...
November 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/27914279/identification-and-quantification-of-4-methylethcathinone-4-mec-and-3-4-methylenedioxypyrovalerone-mdpv-in-hair-by-lc-ms-ms-after-chronic-administration
#15
Jean Claude Alvarez, Isabelle Etting, Emuri Abe, Antoine Villa, Nicolas Fabresse
4-Methylethcathinone (4-MEC) and 3,4-methylenedioxypyrovalerone (MDPV) are synthetic cathinones. The objective of this study was to develop a method in order to measure these compounds in hair of a patient. After decontamination, 20mg of hair were grinded and incubated in phosphate buffer pH 5.0 in presence of 100ng of MDMA-d5 used as internal standard. Double basic liquid-liquid extraction was performed. Samples were separated on a 1.9μm Hypersil GOLD PFP column (100×2.1mm) using gradient elution. Compounds were detected by a LCQ TSQ Vantage XP triple-quadrupole mass spectrometer...
November 24, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27909988/predicting-the-abuse-liability-of-entactogen-class-new-and-emerging-psychoactive-substances-via-preclinical-models-of-drug-self-administration
#16
Shawn M Aarde, Michael A Taffe
Animal models of drug self-administration are currently the gold standard for making predictions regarding the relative likelihood that a recreational drug substance will lead to continued use and addiction. Such models have been found to have high predictive accuracy and discriminative validity for a number of drug classes including ethanol, nicotine, opioids, and psychostimulants such as cocaine and methamphetamine. Members of the entactogen class of psychostimulants (drugs that produce an "open mind state" including feelings of interpersonal closeness, intimacy and empathy) have been less frequently studied in self-administration models...
December 2, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27890676/combined-in-vitro-and-in-silico-approaches-to-the-assessment-of-stimulant-properties-of-novel-psychoactive-substances-the-case-of-the-benzofuran-5-mapb
#17
Michelle A Sahai, Colin Davidson, George Khelashvili, Vincenzo Barrese, Neelakshi Dutta, Harel Weinstein, Jolanta Opacka-Juffry
Novel psychoactive substances (NPS) are increasingly prevalent world-wide although their pharmacological characteristics are largely unknown; those with stimulant properties, due to interactions with the dopamine transporter (DAT), have addictive potential which their users may not realise. We evaluated the binding of 1-(1-benzofuran-5-yl)-N-methylpropan-2-amine (5-MAPB) to rat striatal DAT by means of quantitative autoradiography with [(125)I]RTI-121, and the effects of 5-MAPB on electrically-evoked dopamine efflux by fast-cyclic voltammetry in rat brain slices...
November 24, 2016: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/27889004/ecstasy-research-will-increasing-observational-data-aid-our-understanding-of-mdma
#18
Tim Amoroso
No abstract text is available yet for this article.
December 2016: Lancet Psychiatry
https://www.readbyqxmd.com/read/27863142/identification-and-analytical-characterization-of-nine-synthetic-cathinone-derivatives-n-ethylhexedrone-4-cl-pentedrone-4-cl-%C3%AE-eapp-propylone-n-ethylnorpentylone-6-meo-bk-mdma-%C3%AE-pihp-4-cl-%C3%AE-php-and-4-f-%C3%AE-php
#19
Cuimei Liu, Wei Jia, Tao Li, Zhendong Hua, Zhenhua Qian
Clinical and forensic toxicology laboratories are continuously confronted by analytical challenges when dealing with the new psychoactive substances (NPS) phenomenon. In this study, the analytical characterization of nine synthetic cathinones is described: 2-(ethylamino)-1-phenylhexan-1-one (N-ethylhexedrone 1), 1-(4-chlorophenyl)-2-(methylamino)pentan-1-one (4-Cl-pentedrone 2), 1-(4-chlorophenyl)-2-(ethylamino)pentan-1-one (4-Cl-α-EAPP 3), 1-(3,4-methylenedioxyphenyl)-2-propylaminopropan-1-one (propylone 4), 1-(3,4-methylenedioxyphenyl)-2-ethylaminopentan-1-one (N-ethylnorpentylone 5), 1-(6-methoxy-3,4-methylenedioxyphenyl)-2-methylaminopropan-1-one (6-MeO-bk-MDMA 6), 4-methyl-1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one (α-PiHP 7), 1-(4-chlorophenyl)-2-(pyrrolidin-1-yl)hexan-1-one (4-Cl-α-PHP 8), and 1-(4-fluorophenyl)-2-(pyrrolidin-1-yl)hexan-1-one (4-F-α-PHP 9)...
November 9, 2016: Drug Testing and Analysis
https://www.readbyqxmd.com/read/27861613/non-serotonergic-neurotoxicity-by-mdma-ecstasy-in-neurons-derived-from-mouse-p19-embryonal-carcinoma-cells
#20
Dina Popova, Andréas Forsblad, Sanaz Hashemian, Stig O P Jacobsson
3,4-methylenedioxymethamphetamine (MDMA; ecstasy) is a commonly abused recreational drug that causes neurotoxic effects in both humans and animals. The mechanism behind MDMA-induced neurotoxicity is suggested to be species-dependent and needs to be further investigated on the cellular level. In this study, the effects of MDMA in neuronally differentiated P19 mouse embryonal carcinoma cells have been examined. MDMA produces a concentration-, time- and temperature-dependent toxicity in differentiated P19 neurons, as measured by intracellular MTT reduction and extracellular LDH activity assays...
2016: PloS One
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