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https://www.readbyqxmd.com/read/28942287/the-costs-of-crime-associated-with-stimulant-use-in-a-canadian-setting
#1
Benjamin Enns, Emanuel Krebs, Kora DeBeck, Kanna Hayashi, M-J Milloy, Lindsey Richardson, Evan Wood, Bohdan Nosyk
BACKGROUND: Costs attributable to criminal activity are a major component of the economic burden of substance use disorders, yet there is a paucity of empirical evidence on this topic. Our aim was to estimate the costs of crime associated with different forms and intensities of stimulant use. METHODS: Retrospective cohort study, including individuals from three prospective cohorts in Vancouver, Canada, measured biannually (2011-2015), reporting stimulant use at baseline assessment...
September 14, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28919515/trace-amine-associated-receptor-1-regulation-of-methamphetamine-induced-neurotoxicity
#2
Nicholas B Miner, Josh S Elmore, Michael H Baumann, Tamara J Phillips, Aaron Janowsky
Trace amine-associated receptor 1 (TAAR1) is activated by methamphetamine (MA) and modulates dopaminergic (DA) function. Although DA dysregulation is the hallmark of MA-induced neurotoxicity leading to behavioral and cognitive deficits, the intermediary role of TAAR1 has yet to be characterized. To investigate TAAR1 regulation of MA-induced neurotoxicity, Taar1 transgenic knock-out (KO) and wildtype (WT) mice were administered saline or a neurotoxic regimen of 4 i.p. injections, 2hr apart, of MA (2.5, 5, or 10mg/kg)...
September 14, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28918668/current-status-and-future-prospects-for-the-development-of-substance-abuse-vaccines
#3
Thomas R Kosten, Daryl Shorter, David Heekin
Substance use disorders (SUD) are a significant threat to both individual and public health. To date, SUD pharmacotherapy has focused primarily on agonist medications (i.e., nicotine replacement therapy for tobacco use disorder; methadone and buprenorphine for opioid use disorder), antagonist medications (i.e., naltrexone for opioid use disorder), and aversive therapy (i.e., disulfiram for alcohol use disorder). Pharmacotherapeutic approaches utilizing an immunological framework for medication development represent an important focus of study for treatment of these illnesses...
September 18, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28917981/intranasal-insulin-treatment-alleviates-methamphetamine-induced-anxiety-like-behavior-and-neuroinflammation
#4
Elmira Beirami, Shahrbanoo Oryan, Seyedeh Masoumeh Seyedhosseini Tamijani, Abolhassan Ahmadiani, Leila Dargahi
Insulin, as a peptide hormone, has recently gained attention for its pro-cognitive, anti-inflammatory and neuroprotective effects in the central nervous system (CNS). Most studies have indicated anxiogenic and neuroinflammatory effects of methamphetamine (MA) and other psychostimulants, even after periods of abstinence. The present study aimed to examine whether intranasal (IN) insulin treatment with high CNS bioavailability and minimal systemic side effects, can reverse the anxiety-like behavior and neuroinflammation induced by repeated MA administration...
September 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28917948/effects-of-methamphetamine-on-alloparental-behavior-in-male-and-female-prairie-voles
#5
Adam N Perry, Richard J Ortiz, Keziah R Hernandez, Bruce S Cushing
Psychostimulant abuse is associated with a variety of impairments in social functioning, including an increased frequency of depression and aggression and deficits in social cognition. Psychostimulants reduce social investigation in rats and mice; however, it is less clear how other forms of social behavior (e.g., prosocial behavior) are affected. Females are also generally more sensitive to the effects of psychostimulants on locomotion and stereotyped behavior, which suggests that females might also display greater disruption of prosocial behavior...
September 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28912535/molecular-mechanisms-underlying-the-involvement-of-the-sigma-1-receptor-in-methamphetamine-mediated-microglial-polarization
#6
Jie Chao, Yuan Zhang, Longfei Du, Rongbin Zhou, Xiaodong Wu, Kai Shen, Honghong Yao
Our previous study demonstrated that the sigma-1 receptor is involved in methamphetamine-induced microglial apoptosis and death; however, whether the sigma-1 receptor is involved in microglial activation as well as the molecular mechanisms underlying this process remains poorly understood. The aim of this study is to demonstrate the involvement of the sigma-1 receptor in methamphetamine-mediated microglial activation. The expression of σ-1R, iNOS, arginase and SOCS was examined by Western blot; activation of cell signaling pathways was detected by Western blot analysis...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28903402/impact-of-chronic-methamphetamine-treatment-on-the-atherosclerosis-formation-in-apoe-mice-fed-a-high-cholesterol-diet
#7
Pengfei Zhu, Lun Li, Bo Gao, Mingjing Zhang, Yuting Wang, Ye Gu, Liqun Hu
BACKGROUND: We previously reported that methamphetamine could promote atherosclerosis (AS) in ApoE-/- mice fed normal chow. We herein observed the impact of methamphetamine on AS in ApoE-/- mice fed a high cholesterol diet and explored the potential mechanisms. RESULTS AND MATERIALS AND METHODS: Male ApoE-/- mice fed a high cholesterol diet were treated with saline (NS, n = 5) or methamphetamine [8 mg/kg/day (M8, n = 6) through intraperitoneal injection] for 24 weeks...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28895615/-methamphetamine-use-in-central-germany-a-qualitative-study-on-consumer-groups-and-motives-from-the-experts-perspective
#8
Laura Hoffmann, Nadine Schumann, Matthias Richter
Background Methamphetamine is one of the most consumed illegal drugs worldwide. In Germany, Methamphetamine shows the highest rates of growth in comparison to other illegal substances in recent years. Particularly Central Germany has been struck by a high rise in consumption. International studies indicate that there is no specific group of people that can be identified as Methamphetamine users. Different consumption patterns in terms of Methamphetamine use can be identified within various social groups. This qualitative study will explore different consumer groups among methamphetamine users, their motives, and how they differ by drug addiction type...
September 11, 2017: Psychotherapie, Psychosomatik, Medizinische Psychologie
https://www.readbyqxmd.com/read/28893794/effects-of-hiv-1-tat-and-methamphetamine-on-blood-brain-barrier-integrity-and-function-in-vitro
#9
Sulay Patel, Crystal R Leibrand, Preetha Palasuberniam, Pierre-Olivier Couraud, Babette Weksler, Fay M Jahr, Joseph L McClay, Kurt F Hauser, MaryPeace McRae
Human immunodeficiency (HIV) infection results in neurocognitive deficits in about one half of infected individuals. Despite systemic effectiveness, restricted antiretroviral penetration across the blood-brain barrier (BBB) is a major limitation in fighting CNS-localized infection. Drug abuse exacerbates HIV-induced cognitive and pathologic CNS changes. This study's purpose was to investigate the effects of the HIV-1 protein, Tat, and methamphetamine on factors affecting drug penetration across an in vitro BBB model...
September 11, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28890714/gut-microbiota-analysis-in-rats-with-methamphetamine-induced-conditioned-place-preference
#10
Tingting Ning, Xiaokang Gong, Lingling Xie, Baomiao Ma
Methamphetamine abuse is a major public health crisis. Because accumulating evidence supports the hypothesis that the gut microbiota plays an important role in central nervous system (CNS) function, and research on the roles of the microbiome in CNS disorders holds conceivable promise for developing novel therapeutic avenues for treating CNS disorders, we sought to determine whether administration of methamphetamine leads to alterations in the intestinal microbiota. In this study, the gut microbiota profiles of rats with methamphetamine-induced conditioned place preference (CPP) were analyzed through 16S rRNA gene sequencing...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28888099/polydrug-use-and-its-association-with-drug-treatment-outcomes-among-primary-heroin-methamphetamine-and-cocaine-users
#11
Linwei Wang, Jeong Eun Min, Emanuel Krebs, Elizabeth Evans, David Huang, Lei Liu, Yih-Ing Hser, Bohdan Nosyk
BACKGROUND: Polydrug use may challenge effective treatment for substance use disorders. We evaluate whether secondary substance use modifies the association between treatment and primary drug use among primary heroin, cocaine and methamphetamine (MA) users. METHODS: Data were obtained from prospective cohort studies on people who use illicit drugs (PWUD) in California, USA. Using repeated monthly data on self-reported secondary substance use (heroin, cocaine, MA, alcohol or marijuana; ≥1day in a month), primary drug use (≥1day in a month), and treatment participation, collected via timeline follow-back, we fitted generalized linear mixed multiple regression models controlling for potential confounders to examine the interactions between treatment and secondary substance use on the odds of primary heroin, cocaine and MA use, respectively...
September 6, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28886886/are-changes-in-excitability-in-the-hippocampus-of-adult-male-rats-induced-by-prenatal-methamphetamine-exposure-or-stress
#12
Klara Bernaskova, Simona Tomkova, Romana Slamberova
Prenatal stress and drug exposure induce permanent alterations of the brain. Even though different brain structures are involved, alterations almost always refer to the hippocampus. The aim of this study was to investigate the excitability of hippocampal slices in low-magnesium epilepsy model of prenatally methamphetamine (MA, 5mg/kg sc.) or saline (sc., stress model) exposed animals in adult male rats. The second aim was to investigate, if a low dose of MA (1ml/kgs.c.) administered in adulthood changes the hippocampal activity of these animals...
September 5, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28884876/intranasal-insulin-treatment-restores-cognitive-deficits-and-insulin-signaling-impairment-induced-by-repeated-methamphetamine-exposure
#13
Elmira Beirami, Shahrbanoo Oryan, Seyedeh Masoumeh Seyedhoseini Tamijani, Abolhassan Ahmadiani, Leila Dargahi
Long-term use of methamphetamine (MA) causes a broad range of cognitive deficits. Recently, it has been reported insulin signaling and mitochondrial biogenesis are involved in cognitive processes. This study aimed to examine whether MA induces cognitive deficits concomitant with insulin signaling impairment and mitochondrial dysfunctions and also intranasal (IN) insulin treatment can reverse cognitive deficits caused by MA. Rats were repeatedly treated with increasing doses of MA (1-10 mg/kg) twice a day for 10 days, and their cognitive functions were assessed using Y-maze, novel object recognition and passive avoidance tasks...
September 8, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28882907/protocol-for-a-systematic-review-of-psychological-treatment-for-methamphetamine-use-an-analysis-of-methamphetamine-use-and-mental-health-symptom-outcomes
#14
Alexandra Stuart, Amanda L Baker, Jenny Bowman, Kristen McCarter, Alexandra Mary Janice Denham, Nicole Lee, Kim Colyvas, Adrian Dunlop
INTRODUCTION: People who use methamphetamine (MA) regularly, often experience symptoms of mental ill health associated with the use of the drug. These include symptoms of psychosis, depression, anxiety and also cognitive deficits. Accordingly, psychological treatments aim to reduce MA use and related problems, including symptoms of mental ill health. Although there has been a substantial body of research reporting on the evidence of effectiveness of psychological treatments for MA use, there is a paucity of research addressing the effectiveness of these treatments for coexisting symptoms of mental ill health...
September 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28874314/drug-discovery-for-the-treatment-of-substance-use-disorders-novel-targets-repurposing-and-the-need-for-new-paradigms
#15
REVIEW
Cristiano Chiamulera, Laura Padovani, Mauro Corsi
Drug addiction treatment medications available nowadays are limited in both efficacy and number. The increased understanding of drug addiction circuitries leads the scientific community to look for better molecules and targets for detoxification and relapse prevention. This review focus on known targets (e.g., metabotropic glutamate receptor 5 and GABAB receptor) and on novel potential treatment acting on oxytocin system, which interacts with diverse neurotransmitters, has proved successful in both preclinical and clinical studies on ethanol, cocaine and methamphetamine...
September 2, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28870635/cannabidiol-inhibits-priming-induced-reinstatement-of-methamphetamine-in-rem-sleep-deprived-rats
#16
Saeideh Karimi-Haghighi, Abbas Haghparast
Methamphetamine (METH) is a widely abused and a severely addictive psychostimulant. Relapse is the main cause of concern when treating addiction. It could manifest after a long period of abstinence. Previous studies showed that there is a strong connection between sleep impairment and relapse. Also, it has been reported that cannabidiol might be a potential treatment for drug craving and relapse. In this study, we used conditioned place preference (CPP) to investigate whether Cannabidiol (CBD), a phytocannabinoid, can prevent METH-induced reinstatement in Rapid Eye Movement Sleep Deprived (RSD) rats...
September 1, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28870523/antagonism-of-mglu2-3-receptors-in-the-nucleus-accumbens-prevents-oxytocin-from-reducing-cued-methamphetamine-seeking-in-male-and-female-rats
#17
Aurelien Bernheim, Kah-Chung Leong, Carole Berini, Carmela M Reichel
Methamphetamine (meth) addiction is a prevalent health concern worldwide, yet remains without approved pharmacological treatments. Preclinical evidence suggests that oxytocin may decrease relapse, but the neuronal underpinnings driving this effect remain unknown. Here we investigate whether oxytocin's effect is dependent on presynaptic glutamatergic regulation in the nucleus accumbens core (NAcore) by blocking metabotropic glutamate receptors 2/3 (mGluR2/3). Male and female Sprague-Dawley rats self-administered meth or sucrose on an escalating fixed ratio, followed by extinction and cue-induced reinstatement sessions...
September 1, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28867353/cessation-of-injecting-and-preceding-drug-use-patterns-among-a-prospective-cohort-of-street-involved-youth
#18
Scott E Hadland, Evan Wood, Ekaterina Nosova, Thomas Kerr, Kora DeBeck
PURPOSE: Injection drug use is prevalent among street-involved youth, but patterns of cessation are poorly described. We identified drug use patterns preceding injection cessation among street-involved youth. METHODS: From September 2005 to May 2015, we collected data from the At-Risk Youth Study, a prospective cohort of street-involved youth in Vancouver, Canada, and limited the sample to actively injecting youth. The primary outcome was cessation of injecting self-reported at semiannual follow-up visits...
August 31, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28863003/varenicline-and-gz-793a-differentially-decrease-methamphetamine-self-administration-under-a-multiple-schedule-of-reinforcement-in-rats
#19
Megan M Kangiser, Linda P Dwoskin, Guangrong Zheng, Peter A Crooks, Dustin J Stairs
Methamphetamine is a potent psychostimulant with high abuse rates. Currently, there is no Food and Drug Administration-approved pharmacotherapy for methamphetamine addiction. Ideally, a pharmacotherapy should selectively decrease methamphetamine self-administration without affecting responding for other reinforcers. One way to test this is with the use of a multiple schedule of reinforcement, in which drug and food are available in alternating components within a session. The present study evaluated GZ-793A, a vesicular monoamine transporter-2 inhibitor, and varenicline, a partial agonist at α4β2 and full agonist at α7 nicotinic acetylcholine receptors, for their ability to decrease methamphetamine and food self-administration using a multiple schedule of reinforcement...
August 31, 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/28861718/repeated-forced-swim-exacerbates-methamphetamine-induced-neurotoxicity-neuroprotective-effects-of-nanowired-delivery-of-5-ht3-receptor-antagonist-ondansetron
#20
José Vicente Lafuente, Aruna Sharma, Dafin F Muresanu, Asya Ozkizilcik, Z Ryan Tian, Ranjana Patnaik, Hari S Sharma
The possibility that stress associated with chronic forced swim (FS) may exacerbate methamphetamine (METH) neurotoxicity was examined in a rat model. Rats were subjected to FS in a pool (30 °C) for 15 min daily for 8 days. Control rats were kept at room temperature. METH was administered (9 mg/kg, s.c.) in both control and FS rats and allowed to survive 4 h after the drug injection. METH in FS rats exacerbated BBB breakdown to Evans blue albumin (EBA) by 150 to 220% and ([131])-Iodine by 250 to 380% as compared to naive rats after METH...
August 31, 2017: Molecular Neurobiology
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