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Psychostimulants

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https://www.readbyqxmd.com/read/27914792/corrigendum-to-characterising-dark-net-marketplace-purchasers-in-a-sample-of-regular-psychostimulant-users-international-journal-of-drug-policy-35-2016-32-37
#1
Joe Van Buskirk, Amanda Roxburgh, Raimondo Bruno, Sundresan Naicker, Simon Lenton, Rachel Sutherland, Elizabeth Whittaker, Natasha Sindicich, Allison Matthews, Kerryn Butler, Lucinda Burns
No abstract text is available yet for this article.
November 30, 2016: International Journal on Drug Policy
https://www.readbyqxmd.com/read/27913309/sequence-determinants-of-the-caenhorhabditis-elegansdopamine-transporter-dictating-in-vivoaxonal-export-and-synaptic-localization
#2
Sarah B Robinson, J Andrew Hardaway, Shannon L Hardie, Jane Wright, Ryan M Glynn, Daniel P Bermingham, Qiao Han, Sarah M Sturgeon, Phyllis Freeman, Randy D Blakely
The monoamine neurotransmitter dopamine (DA) acts across phylogeny to modulate both simple and complex behaviors. The presynaptic DA transporter (DAT) is a major determinant of DA signaling capacity in ensuring efficient extracellular DA clearance. In humans, DAT is also a major target for prescribed and abused psychostimulants. Multiple structural determinants of DAT function and regulation have been defined, though largely these findings have arisen from heterologous expression or ex vivo cell culture studies...
November 29, 2016: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/27910188/comparing-rewarding-and-reinforcing-properties-between-bath-salt-3-4-methylenedioxypyrovalerone-mdpv-and-cocaine-using-ultrasonic-vocalizations-in-rats
#3
Steven J Simmons, Ryan A Gregg, Fionya H Tran, Lili Mo, Eva von Weltin, David J Barker, Taylor A Gentile, Lucas R Watterson, Scott M Rawls, John W Muschamp
Abuse of synthetic psychostimulants like synthetic cathinones has risen in recent years. 3,4-Methylenedioxypyrovalerone (MDPV) is one such synthetic cathinone that demonstrates a mechanism of action similar to cocaine. Compared to cocaine, MDPV is more potent at blocking dopamine and norepinephrine reuptake and is readily self-administered by rodents. The present study compared the rewarding and reinforcing properties of MDPV and cocaine using systemic injection dose-response and self-administration models...
December 1, 2016: Addiction Biology
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
#4
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/27908258/neurotoxicity-induced-by-mephedrone-an-up-to-date-review
#5
Flaminia Pantano, Roberta Tittarelli, Giulio Mannocchi, Roberta Pacifici, Alessandro di Luca, Francesco Paolo Busardò, Enrico Marinelli
Mephedrone is a β-ketoamphetamine belonging to the family of synthetic cathinones, an emerging class of designer drugs known for their hallucinogenic and psychostimulant properties as well as for their abuse potential. The aim of this review was to examine the emerging scientific literature on the possible mephedrone-induced neurotoxicity, yet not well defined due to the limited number of experimental studies, mainly carried on animal models. Relevant scientific articles were identified from international literature databases (Medline, Scopus, etc...
November 30, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27903560/commonly-prescribed-drugs-associate-with-cognitive-function-a-cross-sectional-study-in-uk-biobank
#6
Alejo J Nevado-Holgado, Chi-Hun Kim, Laura Winchester, John Gallacher, Simon Lovestone
OBJECTIVE: To investigate medications associated with cognitive function. DESIGN: Population-based cross-sectional cohort study. SETTING: UK Biobank. PARTICIPANTS: UK Biobank participants aged 37-73 years who completed cognitive tests at the baseline visit in 2006-2010. MAIN OUTCOME MEASURES: Cognitive test outcomes on verbal-numerical reasoning test (n=165 493), memory test (n=482 766) and reaction time test (n=496 813)...
November 30, 2016: BMJ Open
https://www.readbyqxmd.com/read/27890589/aged-mice-receiving-caffeine-since-adulthood-show-distinct-patterns-of-anxiety-related-behavior
#7
Paulo Henrique S Botton, Daniela Pochmann, Andreia S Rocha, Fernanda Nunes, Amanda S Almeida, Daniela M Marques, Lisiane O Porciúncula
Caffeine is the psychostimulant most consumed worldwide. Anxiogenic effects of caffeine have been described in adult animalswith controversial findings about its anxiogenic potential. Besides, the effects of caffeine on anxiety with aging are still poorly known. In this study, adult mice (6months old) started to receive caffeine (0.3 and 1.0mg/mL, drinking water) during 12-14months only in the light cycle and at weekdays. The open field (OF) and elevated plus maze (EPM) testing were used to determine the effects of caffeine on anxiety-related behavior in adult and aged mice (18-20months old)...
November 24, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27889580/methylphenidate-modulates-dorsal-raphe-neuronal-activity-behavioral-and-neuronal-recordings-from-adolescent-rats
#8
Holly Whitt, Natasha Kharas, Nachum Dafny
Methylphenidate (MPD) is a widely prescribed psychostimulants used for the treatment of attention deficit hyperactive disorder (ADHD). Unlike the psychostimulants cocaine and amphetamine, MPD does not exhibit direct actions on the serotonin transporter, however there is evidence suggesting that the therapeutic effects of MPD may be mediated in part by alterations in serotonin transmission. This study aimed to investigate the role of the dorsal raphe (DR) nucleus, one of the major sources of serotonergic innervation in the mammalian brain, in the response to MPD exposure...
November 23, 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/27888283/retrograde-conditioning-of-place-preference-and-motor-activity-with-cocaine-in-mice
#9
Ritu A Shetty, Margaret A Rutledge, Michael J Forster
RATIONALE: In order to improve understanding of the nature of drug-associated memory, the current studies addressed whether conditioned place preference (CPP) could develop under conditions in which there was a delay between presentation of context and drug exposure (i.e., retrograde or trace conditioning). OBJECTIVES: The objective was to assess development of CPP when cocaine or methamphetamine was injected simultaneously with exposure to a salient context (S+), or after delays differing in length...
November 25, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27874237/tactile-stimulation-during-different-developmental-periods-modifies-hippocampal-bdnf-and-gr-affecting-memory-and-behavior-in-adult-rats
#10
Caren T D Antoniazzi, Vinícia G Metz, Karine Roversi, Daniele L Freitas, Luciana T Vey, Verônica T Dias, Hecson J Segat, Marta M M F Duarte, Marilise Escobar Bürger
Recent studies have shown that tactile stimulation (TS) in pups is able to prevent and/or minimize fear, anxiety behaviors, and addiction to psychostimulant drugs in adult rats. In these studies, animals have been exposed to handling from postnatal day (PND) 1 to 21. The present study was designed to precisely establish which period of preweaning development has a greater influence of TS on neuronal development. After birth, male pups were exposed to TS from PND1 to 7, PND8 to 14, and PND15 to 21. In adulthood, the different periods of postnatal TS were assessed through behavioral, biochemical and molecular assessments...
November 22, 2016: Hippocampus
https://www.readbyqxmd.com/read/27872023/multiple-orgasms-in-men-what-we-know-so-far
#11
REVIEW
Erik Wibowo, Richard J Wassersug
INTRODUCTION: There is much popular discussion on strategies to facilitate multiple orgasms in men (ie, 100,000+ hits in Google), yet the topic has not received an objective comprehensive review in the literature. AIM: To review the literature on male multiple orgasms. METHODS: We searched the literature for publications on "male multiple orgasms" and factors influencing male multiple orgasms in Google, PubMed, and PsychINFO. This yielded 15 relevant publications...
April 2016: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/27869563/subjective-report-of-side-effects-of-prescribed-and-nonprescribed-psychostimulant-use-in-young-adults
#12
Tess E Smith, Michelle M Martel, Alan D DeSantis
BACKGROUND: Side effects of prescribed and nonprescribed psychostimulant use are understudied. OBJECTIVES: The study examined side effects of prescribed and nonprescribed psychostimulant use in a college sample with attention to possible gender differences. METHODS: 2716 undergraduates (1448 male) between the ages of 17 and 57 years (M = 19.43 years, SD = 1.7 years) completed an online survey that included questions about the subjective side effects of prescribed and nonprescribed psychostimulant use...
November 21, 2016: Substance Use & Misuse
https://www.readbyqxmd.com/read/27869204/mrna-changes-in-nucleus-accumbens-related-to-methamphetamine-addiction-in-mice
#13
Li Zhu, Jiaqi Li, Nan Dong, Fanglin Guan, Yufeng Liu, Dongliang Ma, Eyleen L K Goh, Teng Chen
Methamphetamine (METH) is a highly addictive psychostimulant that elicits aberrant changes in the expression of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) in the nucleus accumbens of mice, indicating a potential role of METH in post-transcriptional regulations. To decipher the potential consequences of these post-transcriptional regulations in response to METH, we performed strand-specific RNA sequencing (ssRNA-Seq) to identify alterations in mRNA expression and their alternative splicing in the nucleus accumbens of mice following exposure to METH...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27868798/neurochemical-and-behavioral-effects-of-nigella-sativa-and-olea-europaea-oil-in-rats
#14
M Atif Raza Cheema, Shazia Nawaz, Sumera Gul, Tabinda Salman, Sabira Naqvi, Ahsana Dar, Darakhshan J Haleem
OBJECTIVES: In the last few decades, therapeutic uses of medicinal compounds present in food as a normal constituent has risen substantially, largely because of their fewer side effects and adequate efficacy. This study is designed to investigate a role of brain serotonin (5-HT) and dopamine (DA) in the potential nootropic, anxiolytic, and other beneficial effects of Nigella sativa (NS) and Olea europaea (OE) oil in rat models. METHODS: Animals were treated with NS and OE oil orally at doses of 0...
November 21, 2016: Nutritional Neuroscience
https://www.readbyqxmd.com/read/27866999/the-5-ht1a-1b-receptor-agonist-eltoprazine-increases-both-catecholamine-release-in-the-prefrontal-cortex-and-dopamine-release-in-the-nucleus-accumbens-and-decreases-motivation-for-reward-and-waiting-impulsivity-but-increases-stopping-impulsivity
#15
S Mechiel Korte, Jolanda Prins, Filip S Van den Bergh, Ronald S Oosting, Rudy Dupree, Gerdien A H Korte-Bouws, Koen G C Westphal, Berend Olivier, Damiaan A Denys, Alexis Garland, Onur Güntürkün
The 5-HT1A/1B-receptor agonist eltoprazine has a behavioral drug signature that resembles that of a variety of psychostimulant drugs, despite the differences in receptor binding profile. These psychostimulants are effective in treating impulsivity disorders, most likely because they increase norepinephrine (NE) and dopamine (DA) levels in the prefrontal cortex. Both amphetamine and methylphenidate, however, also increase dopamine levels in the nucleus accumbens (NAc), which has a significant role in motivation, pleasure, and reward...
November 17, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27858877/hiv-incidence-and-behavioral-correlates-of-hiv-acquisition-in-a-cohort-of-injection-drug-users-in-st-petersburg-russia
#16
Andrei P Kozlov, Roman V Skochilov, Olga V Toussova, Sergey V Verevochkin, Tatiana V Krasnoselskikh, Sergey V Malov, Alla V Shaboltas
The aim of the project was to study human immunodeficiency virus (HIV) incidence, sociodemographic and behavioral correlates of HIV acquisition among injection drug users (IDUs).A total of 717 IDUs were recruited, tested, and counseled for HIV-1; 466 HIV-negative participants were enrolled and followed-up at 6 and 12 months. Sociodemographic and behavioral data were collected during each study visit. The association of sociodemographic and behavioral factors to HIV-1 incidence was assessed.During the 9-month recruitment period, 717 IDUs were screened and 466 participants were enrolled...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27855720/pharmacological-interventions-for-agitation-in-patients-with-traumatic-brain-injury-protocol-for-a-systematic-review-and-meta-analysis
#17
David R Williamson, Anne Julie Frenette, Lisa Burry, Marc M Perreault, Emmanuel Charbonney, François Lamontagne, Marie-Julie Potvin, Jean-François Giguère, Sangeeta Mehta, Francis Bernard
BACKGROUND: Traumatic brain injury (TBI) is a worldwide leading cause of mortality and disability. Among TBI complications, agitation is a frequent behavioural problem. Agitation causes potential harm to patients and caregivers, interferes with treatments, leads to unnecessary chemical and physical restraints, increases hospital length of stay, delays rehabilitation, and impedes functional independence. Pharmacological treatments are often considered for agitation management following TBI...
November 17, 2016: Systematic Reviews
https://www.readbyqxmd.com/read/27853928/d1-and-d2-specific-dopamine-antagonist-modulate-the-caudate-nucleus-neuronal-responses-to-chronic-methylphenidate-exposure
#18
Sidish Venkataraman, Catherine Claussen, Nachum Dafny
The psychostimulant, methylphenidate (MPD), is the first line treatment as a pharmacotherapy to treat behavioral disorders such as attention deficit hyperactivity disorder (ADHD). MPD is commonly misused in non-ADHD (normal) youth and young adults both as a recreational drug and for cognitive enhancing effects to improve their grades. MPD is known to act on the reward circuit; including the caudate nucleus (CN). The CN is comprised of medium spiny neurons containing largely dopamine (DA) D1 and D2 receptors...
November 16, 2016: Journal of Neural Transmission
https://www.readbyqxmd.com/read/27844288/methylphenidate-decreases-atp-levels-and-impairs-glutamate-uptake-and-na-k-atpase-activity-in-juvenile-rat-hippocampus
#19
Felipe Schmitz, Paula Pierozan, André F Rodrigues, Helena Biasibetti, Mateus Grings, Bruna Zanotto, Daniella M Coelho, Carmen R Vargas, Guilhian Leipnitz, Angela T S Wyse
The study of the long-term neurological consequences of early exposure with methylphenidate (MPH) is very important since this psychostimulant has been widely misused by children and adolescents who do not meet full diagnostic criteria for ADHD. The aim of this study was to examine the effect of early chronic exposure with MPH on amino acids profile, glutamatergic and Na(+),K(+)-ATPase homeostasis, as well as redox and energy status in the hippocampus of juvenile rats. Wistar male rats received intraperitoneal injections of MPH (2...
November 14, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27843694/grey-matter-abnormalities-in-methcathinone-abusers-with-a-parkinsonian-syndrome
#20
Julius Juurmaa, Ricarda A L Menke, Pierre Vila, Andreas Müürsepp, Tiiu Tomberg, Pilvi Ilves, Mait Nigul, Heidi Johansen-Berg, Michael Donaghy, Charlotte J Stagg, Ainārs Stepens, Pille Taba
BACKGROUND: A permanent Parkinsonian syndrome occurs in intravenous abusers of the designer psychostimulant methcathinone (ephedrone). It is attributed to deposition of contaminant manganese, as reflected by characteristic globus pallidus hyperintensity on T1-weighted MRI. METHODS: We have investigated brain structure and function in methcathinone abusers (n = 12) compared to matched control subjects (n = 12) using T1-weighted structural and resting-state functional MRI...
November 2016: Brain and Behavior
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