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https://www.readbyqxmd.com/read/28646469/the-cathinones-mdpv-and-%C3%AE-pvp-elicit-different-behavioral-and-molecular-effects-following-acute-exposure
#1
Giuseppe Giannotti, Isabella Canazza, Lucia Caffino, Sabrine Bilel, Andrea Ossato, Fabio Fumagalli, Matteo Marti
Since the mid-to-late 2000s, synthetic cathinones have gained popularity among drug users due to their psychostimulant effects greater than those produced by cocaine and amphetamine. Among them, 3,4-methylenedioxypyrovalerone (MDPV) and 1-phenyl-2-(pyrrolidin-1-yl)pentan-1-one (α-PVP) are ones of the most popular cathinones available in the clandestine market as "bath salts" or "fertilizers." Pre-clinical studies indicate that MDPV and α-PVP induced psychomotor stimulation, affected thermoregulation, and promoted reinforcing properties in rodents...
June 23, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28645616/epidemiological-and-sociodemographic-factors-associated-with-complicated-alcohol-withdrawal-syndrome
#2
R Monte-Secades, M Blanco-Soto, J A Díaz-Peromingo, A Sanvisens-Bergé, M C Martín-González, A Barbosa, B Rosón-Hernández, M A Tejero-Delgado, R Puerta-Louro, R Rabuñal-Rey
OBJECTIVES: To analyse the influence of epidemiological and sociodemographic factors in complicated alcohol withdrawal syndrome (AWS). MATERIAL AND METHODS: A multicentre, observational prospective study was conducted on consecutively added patients with AWS hospitalised in internal medicine departments. We recorded sociodemographic, epidemiological, clinical and progression data. Complicated AWS was defined as that which progressed with seizures or delirium tremens...
June 20, 2017: Revista Clínica Española
https://www.readbyqxmd.com/read/28635181/buprenorphine-requires-concomitant-activation-of-nop-and-mop-receptors-to-reduce-cocaine-consumption
#3
Marsida Kallupi, Qianwei Shen, Giordano de Guglielmo, Dennis Yasuda, V Blair Journigan, Nurulain T Zaveri, Roberto Ciccocioppo
Buprenorphine's clinical use is approved for the treatment of heroin addiction; however, evidence supporting its efficacy in cocaine abuse also exists. While for heroin it has been demonstrated that the effect of buprenorphine is mediated by its ability to activate μ-opioid peptide receptor (MOP) receptors, the mechanism through which it attenuates cocaine intake remains elusive. We explored this mechanism using operant models where rodents were trained to chronically self-administer cocaine for 2 hours daily...
June 21, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28635140/noradrenergic-signaling-in-the-vta-modulates-cocaine-craving
#4
Wojciech Barnaba Solecki, Klaudia Szklarczyk, Kamil Pradel, Krystyna Kwiatkowska, Grzegorz Dobrzański, Ryszard Przewłocki
Exposure to drug-associated cues evokes drug-seeking behavior and is regarded as a major cause of relapse. Conditional stimulus upregulates noradrenaline (NA) system activity, but the drug-seeking behavior depends particularly on phasic dopamine signaling downstream from the ventral tegmental area (VTA). The VTA dopamine-ergic activity is regulated via the signaling of alpha1 -adrenergic and alpha2 -adrenergic receptors (α1 -ARs and α2 -ARs); thus, the impact of the conditional stimulus on drug-seeking behavior might involve NAergic signaling in the VTA...
June 21, 2017: Addiction Biology
https://www.readbyqxmd.com/read/28632478/sexual-risk-behaviors-and-predictors-of-inconsistent-condom-use-among-crack-cocaine-users-in-the-french-overseas-territories-in-the-americas
#5
Marie-Claire Parriault, Astrid Van-Melle, Célia Basurko, Larissa Valmy, Bruno Hoen, André Cabié, Marie-Thérèse Goerger-Sow, Mathieu Nacher
The French overseas territories in the Americas are the French territories most affected by HIV. Crack cocaine users are particularly impacted. The objective of this study was to describe sexual risk behaviors and inconsistent condom use among crack cocaine users. A total of 640 crack cocaine users were interviewed. The sampling method was non-probabilistic. An anonymous standardized questionnaire of 110 questions was used. Over a third of persons did not use condoms systematically with casual sex partners (36...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28625719/atypical-dopamine-transporter-inhibitors-r-modafinil-and-jhw-007-differentially-affect-d2-autoreceptor-neurotransmission-and-the-firing-rate-of-midbrain-dopamine-neurons
#6
Alicia J Avelar, J Cao, Amy Hauck Newman, Michael J Beckstead
Abuse of psychostimulants like cocaine that inhibit dopamine (DA) reuptake through the dopamine transporter (DAT) represents a major public health issue, however FDA-approved pharmacotherapies have yet to be developed. Recently a class of ligands termed "atypical DAT inhibitors" has gained attention due to their range of effectiveness in increasing extracellular dopamine (DA) levels without demonstrating significant abuse liability. These compounds not only hold promise as therapeutic agents to treat stimulant use disorders but also as experimental tools to improve our understanding of DAT function...
June 15, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28623807/hiv-tat-excites-d1-receptor-like-expressing-neurons-from-rat-nucleus-accumbens
#7
G Cristina Brailoiu, Elena Deliu, Jeffrey L Barr, Linda M Console-Bram, Alexandra M Ciuciu, Mary E Abood, Ellen M Unterwald, Eugen Brailoiu
BACKGROUND: HIV-1 infection and drug abuse are frequently co-morbid and their association greatly increases the severity of HIV-1-induced neuropathology. While nucleus accumbens (NAcc) function is severely perturbed by drugs of abuse, little is known about how HIV-1 infection affects NAcc. METHODS: We used calcium and voltage imaging to investigate the effect of HIV-1 trans-activator of transcription (Tat) on rat NAcc. Based on previous neuronal studies, we hypothesized that Tat modulates intracellular Ca(2+) homeostasis of NAcc neurons...
June 8, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28623168/access-to-nicotine-in-drinking-water-reduces-weight-gain-without-changing-caloric-intake-on-high-fat-diet-in-male-c57bl-6j-mice
#8
Cali A Calarco, Somin Lee, Marina R Picciotto
Nicotine and tobacco use is associated with lower body weight, and many smokers report concerns about weight. In animal studies, nicotine reduces weight gain, reduces food consumption, and alters energy expenditure, but these effects vary with duration and route of nicotine administration. Previous studies have used standardized nicotine doses, however, in this study, male and female mice had free access to nicotine drinking water for 30 days while fed either a high fat diet (HFD) or chow, allowing animals to titrate their nicotine intake...
June 13, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28619859/criminal-charges-for-child-harm-from-substance-use-in-pregnancy
#9
Cara Angelotta, Paul S Appelbaum
Despite the opposition of medical and public health professionals, several state legislatures are considering laws that permit child abuse charges for substance use during pregnancy. We reviewed legal decisions regarding women charged with a crime against a fetus or child as a result of substance use during pregnancy. We identified 24 judicial opinions published between 1977 and 2015 in cases involving 29 women prosecuted in 19 states. Charges included child endangerment, child abuse, drug delivery, attempted aggravated child abuse, chemical endangerment of a child, child neglect, child mistreatment, homicide, manslaughter, and reckless injury to a child...
June 2017: Journal of the American Academy of Psychiatry and the Law
https://www.readbyqxmd.com/read/28618284/differences-in-biomarkers-of-crack-cocaine-adolescent-users-before-after-abstinence
#10
Thiago Gatti Pianca, Ronaldo Lopes Rosa, Keila Maria Mendes Ceresér, Bianca Wollenhaupt de Aguiar, Rafaela Carvalho de Abrahão, Patrícia Mafra Lazzari, Flávio Kapczinski, Flávio Pechansky, Luis Augusto Rohde, Cláudia Maciel Szobot
AIMS: To measure the variation in Brain-Derived Neurotrophic Factor (BDNF), Thiobarbituric Acid Reactive Substances (TBARS) and interleukin (IL) levels in crack-cocaine dependent adolescents after 21days of abstinence, comparing to levels found in a group of healthy controls. DESIGN: Cross-sectional nested on a short follow-up study. SETTING: Two inpatient treatment units for adolescents, and a low-income neighborhood. PARTICIPANTS: 90 adolescents, of both genders, with diagnosis of crack cocaine dependence, and 81 healthy adolescents...
June 12, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28607946/it-s-only-a-matter-of-time-longevity-of-cocaine-induced-changes-in-dendritic-spine-density-in-the-nucleus-accumbens
#11
Ethan M Anderson, David W Self
Many reports show that repeated cocaine administration increases dendritic spine density in medium spiny neurons of the nucleus accumbens, but there is less agreement regarding the persistence of these changes. In this review we examine these discrepancies by systematically categorizing papers that measured cocaine-induced changes in accumbal spine density. We compare published reports based on withdrawal time, short versus long duration of cocaine administration, environmental pairing with cocaine, and core/shell subregion specificity...
February 2017: Current Opinion in Behavioral Sciences
https://www.readbyqxmd.com/read/28593748/characteristics-and-response-to-treatment-among-indigenous-people-receiving-injectable-diacetylmorphine-or-hydromorphone-in-a-randomised-controlled-trial-for-the-treatment-of-long-term-opioid-dependence
#12
Eugenia Oviedo-Joekes, Heather Palis, Daphne Guh, Kirsten Marchand, Suzanne Brissette, Kurt Lock, Scott MacDonald, Scott Harrison, Aslam H Anis, Michael Krausz, David C Marsh, Martin T Schechter
INTRODUCTION AND AIMS: To determine the effectiveness of injectable hydromorphone and dicaetylmorphine for Indigenous participants in the Study to Assess Longer-term Opioid Medication Effectiveness (SALOME) clinical trial. The study additionally aims to explore the prevalence and frequency of crack cocaine use among subgroups of participants (by gender and ethnicity). This secondary analysis is particularly relevant given the current need for expanded medication assisted treatments for opioid dependence across North America...
June 8, 2017: Drug and Alcohol Review
https://www.readbyqxmd.com/read/28590957/genetic-moderation-of-cocaine-subjective-effects-by-variation-in-the-tph1-tph2-and-slc6a4-serotonin-genes
#13
Michelle A Patriquin, Sara C Hamon, Mark J Harding, Ellen M Nielsen, Thomas F Newton, Richard De La Garza, David A Nielsen
OBJECTIVE: This study investigated variants of tryptophan hydroxylase (TPH)1, TPH2, and SLC6A4 in the moderation of the subjective effects of cocaine. METHODS: Non-treatment-seeking cocaine-dependent individuals (N=66) were intravenously administered saline and cocaine (40 mg) in a randomized order. Participants self-reported subjective effects of cocaine using a visual analog scale starting before administration of saline or cocaine (-15 min) to up to 20 min after infusion...
June 6, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28589265/effects-of-ketamine-on-the-unconditioned-and-conditioned-locomotor-activity-of-preadolescent-and-adolescent-rats-impact-of-age-sex-and-drug-dose
#14
Sanders A McDougall, Andrea E Moran, Timothy J Baum, Matthew G Apodaca, Vanessa Real
RATIONALE: Ketamine is used by preadolescent and adolescent humans for licit and illicit purposes. OBJECTIVE: The goal of the present study was to determine the effects of acute and repeated ketamine treatment on the unconditioned behaviors and conditioned locomotor activity of preadolescent and adolescent rats. METHODS: To assess unconditioned behaviors, female and male rats were injected with ketamine (5-40 mg/kg), and distance traveled was measured on postnatal day (PD) 21-25 or PD 41-45...
June 7, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28589070/agranulocytosis-sequelae-of-chronic-cocaine-use-case-series-and-literature-review
#15
Roma Srivastava, Maira Rizwan, Muhammad Omer Jamil, Palaniandy Kogulan, Donna Salzman
Agranulocytosis is a rare condition with a reported incidence ranging from one to five cases per million population per year. Most commonly, agranulocytosis is secondary to chemotherapeutic agents, however, other medications have also been associated with it. An immune mediated destruction of circulating granulocytes and/or granulocyte precursors secondary to drug-dependent or drug-induced antibodies is the postulated mechanism. Agranulocytosis has also been reported secondary to recreational drug use...
May 3, 2017: Curēus
https://www.readbyqxmd.com/read/28585320/serotonin-transporter-blockade-contributes-to-the-behavioral-neuronal-and-molecular-effects-of-cocaine
#16
Linda D Simmler, Allison M J Anacker, Michael H Levin, Nina M Vaswani, Paul J Gresch, Alex G Nackenoff, Noelle C Anastasio, Sonja J Stutz, Kathryn A Cunningham, Jing Wang, Bing Zhang, L Keith Henry, Adele Stewart, Jeremy Veenstra-VanderWeele, Randy D Blakely
BACKGROUND AND PURPOSE: The psychostimulant cocaine induces complex molecular, cellular and behavioral responses as a consequence of inhibiting presynaptic dopamine, noradrenaline and serotonin (5-HT) transporters. To elucidate 5-HT transporter (SERT)-specific contributions to cocaine action, we evaluated cocaine effects in the SERT Met172 knock-in mouse, which expresses a SERT coding substitution that eliminates high-affinity cocaine recognition. EXPERIMENTAL APPROACH: We validated the impact of SERT Met172 on cocaine antagonism of 5-HT re-uptake using ex vivo synaptosome preparations and in vivo microdialysis...
June 5, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28584928/effects-of-the-serotonin-2c-receptor-agonist-way163909-on-the-abuse-related-effects-and-mesolimbic-dopamine-neurochemistry-induced-by-abused-stimulants-in-rhesus-monkeys
#17
Laís F Berro, Maylen Perez Diaz, Eric Maltbie, Leonard L Howell
RATIONALE: Accumulating evidence shows that the serotonergic system plays a major role in psychostimulant abuse through its interactions with the dopaminergic system. Studies indicate that serotonin 5-HT2C receptors are one of the main classes of receptors involved in mediating the influence of serotonin in drug abuse. OBJECTIVE: The aim of the present study was to evaluate the effects of the selective serotonin 5-HT2C receptor agonist WAY163909 on the behavioral neuropharmacology of cocaine and methamphetamine in adult rhesus macaques...
June 5, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28579351/preclinical-abuse-liability-assessment-of-abt-126-an-agonist-at-the-%C3%AE-7-nicotinic-acetylcholine-receptor-nachr
#18
Thomas J Hudzik, Ana M Basso, James J Lynch, William M Bracken, Eric G Mohler, Kathy L Kohlhaas, Hongyu Xu, George Haig, Laura Gault
ABT-126 is a nicotinic acetylcholine receptor (nAChR) agonist that is selective for the α7 subtype of the receptor. nAChRs are thought to play a role in a variety of neurocognitive processes and have been a pharmacologic target for disorders with cognitive impairment, including schizophrenia and Alzheimer's disease. As part of the preclinical safety package for ABT-126, its potential for abuse was assessed. While the involvement of the α4β2 subtype of the nicotinic receptor in the addictive properties of nicotine has been demonstrated, the role of the α7 receptor has been studied much less extensively...
July 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28577753/cocaine-induced-chromatin-modifications-associate-with-increased-expression-and-three-dimensional-looping-of-auts2
#19
Olivia Engmann, Benoit Labonté, Amanda Mitchell, Pavel Bashtrykov, Erin S Calipari, Chaggai Rosenbluh, Yong-Hwee E Loh, Deena M Walker, Dominika Burek, Peter J Hamilton, Orna Issler, Rachael L Neve, Gustavo Turecki, Yasmin Hurd, Andrew Chess, Li Shen, Isabelle Mansuy, Albert Jeltsch, Schahram Akbarian, Eric J Nestler
BACKGROUND: Exposure to drugs of abuse alters the epigenetic landscape of the brain's reward regions, such as the nucleus accumbens. We investigated how combinations of chromatin modifications affect genes that regulate responses to cocaine. We focused on Auts2, a gene linked to human evolution and cognitive disorders, which displays strong clustering of cocaine-induced chromatin modifications in this brain region. METHODS: We combined chromosome conformation capture, circularized chromosome conformation capture, and related approaches with behavioral paradigms relevant to cocaine phenotypes...
May 5, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28577506/high-enhancer-downer-withdrawal-helper-multifunctional-nonmedical-benzodiazepine-use-among-young-adult-opioid-users-in-new-york-city
#20
Pedro Mateu-Gelabert, Lauren Jessell, Elizabeth Goodbody, Dongah Kim, Krista Gile, Jennifer Teubl, Cassandra Syckes, Kelly Ruggles, Jeffrey Lazar, Sam Friedman, Honoria Guarino
BACKGROUND: Benzodiazepines are a widely prescribed psychoactive drug; in the U.S., both medical and nonmedical use of benzodiazepines has increased markedly in the past 15 years. Long-term use can lead to tolerance and dependence, and abrupt withdrawal can cause seizures or other life-threatening symptoms. Benzodiazepines are often used nonmedically in conjunction with other drugs, and with opioids in particular-a combination that can increase the risk for fatal and non-fatal overdose...
May 31, 2017: International Journal on Drug Policy
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