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https://www.readbyqxmd.com/read/29773909/an-unsuspected-role-for-organic-cation-transporter-3-in-the-actions-of-amphetamine
#1
Felix P Mayer, Diethart Schmid, W Anthony Owens, Georgianna G Gould, Mia Apuschkin, Oliver Kudlacek, Isabella Salzer, Stefan Boehm, Peter Chiba, Piper H Williams, Hsiao-Huei Wu, Ulrik Gether, Wouter Koek, Lynette C Daws, Harald H Sitte
Amphetamine abuse is a major public health concern for which there is currently no effective treatment. To develop effective treatments, the mechanisms by which amphetamine produces its abuse-related effects need to be fully understood. It is well known that amphetamine exerts its actions by targeting high-affinity transporters for monoamines, in particular the cocaine-sensitive dopamine transporter. Organic cation transporter 3 (OCT3) has recently been found to play an important role in regulating monoamine signaling...
April 6, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29770212/adolescent-thc-exposure-does-not-sensitize-conditioned-place-preferences-to-subthreshold-d-amphetamine-in-male-and-female-rats
#2
Robin J Keeley, Cameron Bye, Jan Trow, Robert J McDonald
The acute effects of marijuana consumption on brain physiology and behaviour are well documented, but the long-term effects of its chronic use are less well known. Chronic marijuana use during adolescence is of increased interest, given that the majority of individuals first use marijuana during this developmental stage , and  adolescent marijuana use is thought to increase the susceptibility to abusing other drugs when exposed later in life. It is possible that marijuana use during critical periods in adolescence could lead to increased sensitivity to other drugs of abuse later on...
2018: F1000Research
https://www.readbyqxmd.com/read/29761343/role-of-exogenous-progesterone-in-the-treatment-of-men-and-women-with-substance-use-disorders-a-narrative-review
#3
REVIEW
MacKenzie R Peltier, Mehmet Sofuoglu
Substance use disorders (SUDs) remain problematic as many individuals are untreated or do not benefit from the currently available interventions. Thus, there is an urgent need to develop novel pharmacological interventions to treat SUDs. Evidence suggests that the female sex hormone, progesterone, attenuates the craving for and the euphoric effects of drugs of abuse. Research to date has demonstrated that progesterone may modulate responses to drugs of abuse and may have utility as a novel treatment for SUDs...
May 14, 2018: CNS Drugs
https://www.readbyqxmd.com/read/29760666/candyflipping-and-other-combinations-identifying-drug-drug-combinations-from-an-online-forum
#4
Michael Chary, David Yi, Alex F Manini
Novel psychoactive substances (NPS) refer to synthetic compounds or derivatives of more widely known substances of abuse that have emerged over the last two decades. Case reports suggest that users combine substances to achieve desired psychotropic experiences while reducing dysphoria and unpleasant somatic effects. However, the pattern of combining NPS has not been studied on a large scale. Here, we show that posts discussing NPS describe combining nootropics with sedative-hypnotics and stimulants with plant hallucinogens or psychiatric medications...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29754278/behavioral-and-noradrenergic-sensitizations-in-vulnerable-traumatized-rats-suggest-common-bases-with-substance-use-disorders
#5
Claire Le Dorze, Jean-Pol Tassin, Fréderic Chauveau, Pascale Gisquet-Verrier
The aim of the present study was to strengthen our hypothesis of a common physiological basis for post-traumatic stress disorder (PTSD) and substance use disorders. This paper investigates the possibility that rats exposed to a PTSD model exhibit noradrenergic and behavioral sensitization, as observed following repeated drugs of abuse injections. First, rats received a single prolonged stress (SPS), combining three consecutive stressors. They were then tested, 2 weeks after the trauma for PTSD-like symptoms to discriminate between vulnerable and resilient rats...
May 12, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29729322/methamphetamine-augment-hiv-1-tat-mediated-memory-deficits-by-altering-the-expression-of-synaptic-proteins-and-neurotrophic-factors
#6
Anantha Ram Nookala, Daniel C Schwartz, Nitish S Chaudhari, Alexy Glazyrin, Edward B Stephens, Nancy E J Berman, Anil Kumar
Methamphetamine (METH) abuse is common among individuals infected with HIV-1 and has been shown to affect HIV replication and pathogenesis. These HIV-1 infected individuals also exhibit greater neuronal injury and higher cognitive decline. HIV-1 proteins, specifically gp120 and HIV-1 Tat, have been earlier shown to affect neurocognition. HIV-1 Tat, a viral protein released early during HIV-1 replication, contributes to HIV-associated neurotoxicity through various mechanisms including production of pro-inflammatory cytokines, reactive oxygen species and dysregulation of neuroplasticity...
May 2, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29718282/suspected-driving-under-the-influence-case-involving-mitragynine
#7
Trista H Wright
Mitragynine is a novel psychoactive substance (NPS) that has emerged as a designer opioid being distributed on the street. Mitragynine, also known as kratom, has dose-dependent pharmacological effects and possesses both stimulant-like and sedative effects due to dual-binding of α-adrenergic and μ-opioid receptors. This herbal remedy readily available online has caused adverse effects including tachycardia, agitation, tremors, hallucination and death; however, this is the first reported suspected driving under the influence case involving mitragynine...
April 27, 2018: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/29714473/dark-classics-in-chemical-neuroscience-cathinone-derived-psychostimulants
#8
Steven J Simmons, Jonna M Leyrer-Jackson, Chicora F Oliver, Callum Hicks, John Muschamp, Scott M Rawls, M Foster Olive
Cathinone is a plant alkaloid found in khat leaves of perennial shrubs grown in East Africa. Similar to cocaine, cathinone elicits psychostimulant effects which are in part attributed to its amphetamine-like structure. Around 2010, home laboratories began altering the parent structure of cathinone to synthesize derivatives with mechanisms of action, potencies, and pharmacokinetics permitting high abuse potential and toxicity. These "synthetic cathinones" include 4-methylmethcathinone (mephedrone), 3,4-methylenedioxypyrovalerone (MDPV) and the empathogenic agent 3,4-methylenedioxymethcathinone (methylone) which collectively gained international popularity following aggressive online marketing as well as availability in various retail outlets...
May 1, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29703999/amphetamine-maintenance-differentially-modulates-effects-of-cocaine-methylenedioxypyrovalerone-mdpv-and-methamphetamine-on-intracranial-self-stimulation-and-nucleus-accumbens-dopamine-in-rats
#9
Amy R Johnson, Matthew L Banks, Dana E Selley, S Stevens Negus
Amphetamine maintenance is effective clinically to reduce the consumption of the monoamine uptake inhibitor cocaine but not of the monoamine releaser methamphetamine, and its effectiveness in treating the abuse of other psychostimulants is not known. The mechanisms for differential amphetamine-maintenance effectiveness to treat different types of psychostimulant abuse are also not known. Accordingly, the present study compared the effects of amphetamine maintenance on abuse-related behavioral and neurochemical effects of cocaine, methamphetamine, and the "bath salts" constituent 3,4-methylenedioxypyrovalerone (MDPV) in rats...
April 19, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29688694/in-situ-determination-of-illegal-drugs-in-oral-fluid-by-portable-capillary-electrophoresis-with-deep-uv-excited-fluorescence-detection
#10
Piret Saar-Reismaa, Enn Erme, Merike Vaher, Maria Kulp, Mihkel Kaljurand, Jekaterina Mazina-Scaron Inkar
The present study demonstrates the potential of a portable capillary electrophoresis (CE) instrument, coupled to deep UV fluores-cence detector (FD) with a 230-255 nm excitation wavelength range, for the determination of the abuse of illegal drugs in oral fluids in situ. CE was introduced in this study due its exceptional power of separation and resolution, short analysis time and abil-ity for miniaturization for on-site assessment of different substances. The deep UV fluorescence detector was equipped with five interchangeable emission filters, in the emission wavelength range from 278 to 600 nm, and was successfully employed for deter-mination of natively fluorescing illegal drugs, such as cocaine, cocaethylene, 3,4-methylenedioxymethamphetamine (MDMA), 3,4-methylenedioxeamphetamine (MDA), 3,4-methylenedioxy-N-ethylamphetamine (MDEA), para-methoxyamphetamine (PMA), para-methoxy-N-methylamphetamine (PMMA), amphetamine (AMP), methamphetamine (METH), tetrahydrocannabinol (THC) and cannabidiol (CBD)...
April 24, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29671582/dark-side-of-amphetamine-and-analogues-pharmacology-syndromic-manifestation-and-management-of-amphetamine-addiction
#11
Abdul Mannan Baig
The threat imposed by the use of psychoactive, illicit drugs on human health and the cost of rehabilitation of the affected individuals is nothing less than billions of dollars per year. Of the psychoactive substance abuse drugs are amphetamine and its analogues like methamphetamine. This Viewpoint intends to draw the attention of readers toward the neurological basis of "falling a prey" to methamphetamine. Attention has been paid toward a rapid desensitizing attribute that develops shortly after the repetitive use of drugs belonging to sympathomimetic agents of this group...
April 19, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29662527/stimulant-withdrawal-in-a-child-with-autism-spectrum-disorder-and-adhd-a-case-report
#12
Aneta Krakowski, Abel Ickowicz
Objective: To consider whether the concepts of tolerance and withdrawal to stimulant medications apply to a preadolescent female, affected by autism spectrum disorder (ASD) and treated for associated attention-deficit/hyperactivity disorder (ADHD). Methods: We describe the case history and review scientific English language literature pertaining to acute withdrawal effects associated with methylphenidate and amphetamine derivatives in children. Results: An 11-year-old female with ASD and ADHD referred to our clinic experienced vomiting, headaches, and light sensitivity following abrupt discontinuation of methylphenidate; she subsequently presented with migraines and marked malaise immediately after a dose reduction in lisdexamfetamine...
April 2018: Journal of the Canadian Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/29602535/wastewater-based-epidemiology-generated-forensic-information-amphetamine-synthesis-waste-and-its-impact-on-a-small-sewage-treatment-plant
#13
Erik Emke, Dennis Vughs, Annemieke Kolkman, Pim de Voogt
Chemical analysis of domestic wastewater can reveal the presence of illicit drugs either consumed by a population or directly discharged into the sewer system. In the search for causes of a recent malfunctioning of a small domestic wastewater treatment plant aberrantly high loads of amphetamine were observed in the influent of the plant. Direct discharges of chemical waste from illegal production sites were suspected to be the cause. Illegal manufacturing of amphetamines creates substantial amounts of chemical waste...
March 19, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29602151/usefulness-of-hair-analysis-and-psychological-tests-for-identification-of-alcohol-and-drugs-of-abuse-consumption-in-driving-license-regranting
#14
Elena Lendoiro, Ana de Castro, Cristian Jiménez-Morigosa, Xosé A Gomez-Fraguela, Manuel López-Rivadulla, Angelines Cruz
The implementation of the points-based driving license helps to change the drivers' behavior and is related to a reduction of traffic accidents and fatalities. In Spain, when a driver loses all points, the driving license is revoked, so the driver must enroll on a Driver Awareness and Re-education (DARE) course. However, at the moment offenders are not submitted to any test to confirm absence of alcohol or drugs of abuse consumption, even when 9% of Spanish drivers lose their driving license for driving under the influence (DUI)...
March 20, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29581536/neural-activation-to-monetary-reward-is-associated-with-amphetamine-reward-sensitivity
#15
Natania A Crane, Stephanie M Gorka, Jessica Weafer, Scott A Langenecker, Harriet de Wit, K Luan Phan
One known risk factor for drug use and abuse is sensitivity to rewarding effects of drugs. It is not known whether this risk factor extends to sensitivity to non-drug rewards. In this study with healthy young adults, we examined the association between sensitivity to the subjective rewarding effects of amphetamine and a neural indicator of anticipation of monetary reward. We hypothesized that greater euphorigenic response to amphetamine would be associated with greater neural activation to anticipation of monetary reward (Win > Loss)...
March 14, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29575801/drug-abuse-screening-with-exhaled-breath-and-oral-fluid-in-adults-with-substance-use-disorder
#16
Michel Arvidsson, Shahid Ullah, Johan Franck, Marja-Liisa Dahl, Olof Beck
In the treatment of substance use disorder regular laboratory-based testing has the dual purpose of monitoring compliance to the prescribed medication and the abstention from medically non-motivated substances (i.e. drug abuse screening). The principal specimen for testing is urine, but collection of urine has some disadvantages, e.g. being more time-consuming and more intrusive compared to other matrices, and there is also the risk of adulteration. This project aims to compare exhaled breath and oral fluid as alternative matrices for drug abuse screening in patients with substance use disorder...
March 25, 2018: Drug Testing and Analysis
https://www.readbyqxmd.com/read/29572651/diazepam-blocks-50-khz-ultrasonic-vocalizations-and-stereotypies-but-not-the-increase-in-locomotor-activity-induced-in-rats-by-amphetamine
#17
Gisele de Oliveira Guaita, Debora Dalla Vecchia, Roberto Andreatini, Donita L Robinson, Rainer K W Schwarting, Claudio Da Cunha
RATIONALE: We have recently shown that the benzodiazepine diazepam inhibits dopamine release in the NAc and blocks the increased release of dopamine induced by DL-amphetamine. Rewarding stimuli and many drugs of abuse can induce dopamine release in the nucleus accumbens as well as 50-kHz ultrasonic vocalizations (USVs) in rats. OBJECTIVES: In the present study, we tested the hypothesis that diazepam can also block the increase in locomotor activity and USVs elicited by amphetamine...
March 23, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29567216/regulatory-analysis-on-the-medical-use-of-ephedrine-related-products-in-taiwan
#18
REVIEW
Wan-Nan Yu, Li-Hsuan Wang, Hui-Wen Cheng
To prevent ephedrine-related products from being misused to produce amphetamine and/or its analogs, there's a need for more effective and achievable regulatory mechanisms for the health, police, investigational, prosecution and judiciary authorities in Taiwan. This review was conducted to evaluate the international and Taiwan's regulatory policies and management of medical ephedrine-related products through the corresponding information collected from international and Taiwan government agency authorities. The combat of illegal drugs should involve both supply and demand sides to be successful...
April 2018: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/29551076/amphetamine-availability-predicts-amphetamine-related-mental-health-admissions-a-time-series-analysis
#19
Grant Sara, Clifford Baxter, Patricia Menendez, Julia Lappin
OBJECTIVE: Amphetamine use and availability have increased in Australia and there are concerns that this has led to more frequent hospital admissions with amphetamine-related psychosis. This study examines whether amphetamine-related admissions to mental health units are more common at times of greater amphetamine availability. METHODS: We conducted an ecological study using aggregate crime and health service data for NSW, Australia, from January 2000 to March 2015...
March 1, 2018: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/29549032/drug-sensitive-reward-in-crayfish-exploring-the-neural-basis-of-addiction-with-automated-learning-paradigms
#20
REVIEW
Robert Huber, Adebobola Imeh-Nathaniel, Thomas I Nathaniel, Sayali Gore, Udita Datta, Rohan Bhimani, Jules B Panksepp, Jaak Panksepp, Moira J van Staaden
Results of recent work from our labs and those of others have broadened perspectives on addiction beyond a human-specific, cognitive phenomenon. Addictive plant alkaloids are defensive compounds which have arisen to counter herbivory. With insects the true targets of the coevolutionary arms race, humans may be little more than collateral damage when impacted by 'human' drugs of abuse. The present paper summarizes recent contributions, with a primary focus on our own research in crayfish, where we characterize the behavioral and neural consequences resulting from chronic and acute exposure to psychostimulant and addictive drugs...
March 13, 2018: Behavioural Processes
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