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Psychopharmacology

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https://www.readbyqxmd.com/read/28536868/caffeine-increases-the-velocity-of-rapid-eye-movements-in-unfatigued-humans
#1
Charlotte J W Connell, Benjamin Thompson, Jason Turuwhenua, Robert F Hess, Nicholas Gant
BACKGROUND: Caffeine is a widely used dietary stimulant that can reverse the effects of fatigue on cognitive, motor and oculomotor function. However, few studies have examined the effect of caffeine on the oculomotor system when homeostasis has not been disrupted by physical fatigue. This study examined the influence of a moderate dose of caffeine on oculomotor control and visual perception in participants who were not fatigued. METHODS: Within a placebo-controlled crossover design, 13 healthy adults ingested caffeine (5 mg·kg(-1) body mass) and were tested over 3 h...
May 24, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28536867/suppressing-effect-of-cor659-on-alcohol-sucrose-and-chocolate-self-administration-in-rats-involvement-of-the-gabab-and-cannabinoid-cb1-receptors
#2
Paola Maccioni, Giancarlo Colombo, Irene Lorrai, Alessandro Zaru, Mauro A M Carai, Gian Luigi Gessa, Antonella Brizzi, Claudia Mugnaini, Federico Corelli
RATIONALE AND OBJECTIVES: COR659 [methyl2-(4-chlorophenylcarboxamido)-4-ethyl-5-methylthiophene-3-carboxylate] is a new, positive allosteric modulator (PAM) of the GABAB receptor. This study evaluated whether COR659 shared with previously tested GABAB PAMs the capacity to reduce alcohol self-administration in rats. RESULTS: Treatment with non-sedative doses of COR659 (2.5, 5, and 10 mg/kg; i.p.) suppressed lever-responding for alcohol (15% v/v) in Sardinian alcohol-preferring (sP) rats under the fixed ratio (FR) 4 (FR4) and progressive ratio (PR) schedules of reinforcement; COR659 was more potent and effective than the reference GABAB PAM, GS39783...
May 24, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28536866/a-placebo-controlled-study-of-quetiapine-xr-in-bipolar-depression-accompanied-by-generalized-anxiety-with-and-without-a-recent-history-of-alcohol-and-cannabis-use
#3
Keming Gao, Stephen J Ganocy, Carla Conroy, Brittany Brownrigg, Mary Beth Serrano, Joseph R Calabrese
OBJECTIVE: This study aims to compare treatment response in bipolar I or II depression and generalized anxiety disorder (GAD) with and without recent alcohol and/or cannabis use disorder (ALC/CAN) to quetiapine-XR (extended release) or placebo. METHODS: A randomized, double-blind, 8-week study of quetiapine-XR versus placebo in patients with bipolar I or II depression and GAD with or without a recent ALC/CAN was used to compare changes in Hamilton Depression Rating Scale-17, Hamilton Anxiety Rating Scale, the 16-item Quick Inventory of Depressive Symptomatology-Self-Report (QIDS-SR-16), Clinical Global Impression for Bipolar Disorder-Severity (CGI-BP-S), and Timeline Follow Back within and between groups...
May 24, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28536865/the-c-2-derivatives-of-salvinorin-a-ethoxymethyl-ether-sal-b-and-%C3%AE-tetrahydropyran-sal-b-have-anti-cocaine-properties-with-minimal-side-effects
#4
Amy W M Ewald, Peter J Bosch, Aimee Culverhouse, Rachel Saylor Crowley, Benjamin Neuenswander, Thomas E Prisinzano, Bronwyn M Kivell
RATIONALE: Kappa-opioid receptor (KOPr) agonists have pre-clinical anti-cocaine and analgesic effects. However, side effects including sedation, dysphoria, aversion, anxiety and depression limit their therapeutic development. The unique structure of salvinorin A has been used to develop longer acting KOPr agonists. OBJECTIVES: We evaluate two novel C-2 analogues of salvinorin A, ethoxymethyl ether Sal B (EOM Sal B) and β-tetrahydropyran Sal B (β-THP Sal B) alongside U50,488 for their ability to modulate cocaine-induced behaviours and side effects, pre-clinically...
May 23, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28508921/latent-factor-structure-of-a-behavioral-economic-marijuana-demand-curve
#5
Elizabeth R Aston, Samantha G Farris, James MacKillop, Jane Metrik
RATIONALE: Drug demand, or relative value, can be assessed via analysis of behavioral economic purchase task performance. Five demand indices are typically obtained from drug purchase tasks. OBJECTIVES: The goal of this research was to determine whether metrics of marijuana reinforcement from a marijuana purchase task (MPT) exhibit a latent factor structure that efficiently characterizes marijuana demand. METHODS: Participants were regular marijuana users (n = 99; 37...
May 16, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28508107/memantine-add-on-to-antipsychotic-treatment-for-residual-negative-and-cognitive-symptoms-of-schizophrenia-a-meta-analysis
#6
Taro Kishi, Yuki Matsuda, Nakao Iwata
RATIONALE: We examined whether memantine add-on to antipsychotic treatment is beneficial in schizophrenia treatment. OBJECTIVE: This systematic review and meta-analysis aimed to achieve stronger evidence on the efficacy and safety of memantine add-on for treating schizophrenia. METHODS: We analyzed double-blind, randomized, placebo-controlled trials of memantine add-on treatment in schizophrenia patients receiving antipsychotics. The primary outcomes were amelioration of negative symptoms and all-cause discontinuation...
May 15, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28508106/differential-effects-of-pair-housing-on-voluntary-nicotine-consumption-a-comparison-between-male-and-female-adolescent-rats
#7
Hyunchan Lee, Minji Jang, Woonhee Kim, Jihyun Noh
RATIONALE: Tobacco smoking occurs in a wide array of social circumstances. Social support for quitting is generally used to stop smoking, while peer interactions may be a crucial factor in triggering tobacco use among adolescents. OBJECTIVES: To determine the role of social factors on nicotine dependence, we compared single- and pair-housed rats subjected to voluntary oral nicotine consumption tests. METHODS: Six-week-old adolescent rats were subjected to experimental procedures and assigned to one of the following groups: a male single group, a male pair group with a sibling, a female single group, and a female pair group with a sibling...
May 15, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28500373/effects-of-varenicline-versus-transdermal-nicotine-replacement-therapy-on-cigarette-demand-on-quit-day-in-individuals-with-substance-use-disorders
#8
Cara M Murphy, James MacKillop, Rosemarie A Martin, Jennifer W Tidey, Suzanne M Colby, Damaris J Rohsenow
RATIONALE: Cigarette demand is a behavioral economic measure of the relative value of cigarettes. Decreasing the value of cigarette reinforcement may help with quitting smoking. OBJECTIVES: This study aimed to evaluate the effects of initial use of varenicline (VAR) versus nicotine replacement therapy (NRT) on demand for cigarettes on quit day among smokers with substance use disorders (SUD) and to determine whether reduced demand was associated with subsequent abstinence from smoking at 1 and 3 months...
May 13, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28488040/the-role-of-serotonin-in-personality-inference-tryptophan-depletion-impairs-the-identification-of-neuroticism-in-the-face
#9
Robert Ward, Shubha Sreenivas, Judi Read, Kate E A Saunders, Robert D Rogers
Serotonergic mechanisms mediate the expression of personality traits (such as impulsivity, aggression and anxiety) that are linked to vulnerability to psychological illnesses, and modulate the identification of emotional expressions in the face as well as learning about broader classes of appetitive and aversive signals. Faces with neutral expressions signal a variety of socially relevant information, such that inferences about the big five personality traits, including Neuroticism, Extraversion and Agreeableness, can be accurately made on the basis of emotionally neutral facial photographs...
May 9, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28477089/the-phosphodiesterase-4-inhibitor-roflumilast-decreases-ethanol-consumption-in-c57bl-6j-mice
#10
Xin Liu, Pi-Da Hao, Ming-Feng Yang, Jing-Yi Sun, Lei-Lei Mao, Cun-Dong Fan, Zong-Yong Zhang, Da-Wei Li, Xiao-Yi Yang, Bao-Liang Sun, Han-Ting Zhang
RATIONALE: Alcohol use disorders have become one of the most damaging psychiatric disorders in the world; however, there are no ideal treatments in clinic. Phosphodiesterase-4 (PDE4), an enzyme that specifically hydrolyzes intracellular cyclic AMP (cAMP), has been involved in alcohol use disorders. Roflumilast is the first PDE4 inhibitor approved for treatment of chronic obstructive pulmonary diseases in clinic. It was of particular interest to researchers to determine whether roflumilast altered ethanol consumption...
May 6, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28470399/predicting-relapse-with-individual-residual-symptoms-in-major-depressive-disorder-a-reanalysis-of-the-star-d-data
#11
Hitoshi Sakurai, Takefumi Suzuki, Kimio Yoshimura, Masaru Mimura, Hiroyuki Uchida
BACKGROUND: Residual symptoms are detrimental to prognosis in major depressive disorder (MDD); however, little is known about the contribution of each residual symptom in predicting outcomes. The objective of this analysis was to identify which individual symptoms, based on self-report and clinician interview, could predict subsequent relapse. METHODS: The data of 1133 outpatients with nonpsychotic MDD who entered a 12-month naturalistic follow-up phase after achieving remission with level 1 treatment (i...
May 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28466092/repeated-social-defeat-and-the-rewarding-effects-of-cocaine-in-adult-and-adolescent-mice-dopamine-transcription-factors-probdnf-signaling-pathways-and-the-trkb-receptor-in-the-mesolimbic-system
#12
Sandra Montagud-Romero, Cristina Nuñez, M Carmen Blanco-Gandia, Elena Martínez-Laorden, María A Aguilar, Javier Navarro-Zaragoza, Pilar Almela, Maria-Victoria Milanés, María-Luisa Laorden, José Miñarro, Marta Rodríguez-Arias
RATIONALE: Repeated social defeat (RSD) increases the rewarding effects of cocaine in adolescent and adult rodents. OBJECTIVE: The aim of the present study was to compare the long-term effects of RSD on the conditioned rewarding effects of cocaine and levels of the transcription factors Pitx3 and Nurr1 in the ventral tegmental area (VTA), the dopamine transporter (DAT), the D2 dopamine receptor (D2DR) and precursor of brain-derived neurotrophic factor (proBDNF) signaling pathways, and the tropomyosin-related kinase B (TrkB) receptor in the nucleus accumbens (NAc) in adult and adolescent mice...
May 2, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28462472/role-of-the-agranular-insular-cortex-in-contextual-control-over-cocaine-seeking-behavior-in-rats
#13
Amy A Arguello, Rong Wang, Carey M Lyons, Jessica A Higginbotham, Matthew A Hodges, Rita A Fuchs
RATIONALE: Environmental stimulus control over drug relapse requires the retrieval of context-response-cocaine associations, maintained in long-term memory through active reconsolidation processes. Identifying the neural substrates of these phenomena is important from a drug addiction treatment perspective. OBJECTIVES: The present study evaluated whether the agranular insular cortex (AI) plays a role in drug context-induced cocaine-seeking behavior and cocaine memory reconsolidation...
May 2, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28456841/changes-in-gene-expression-and-sensitivity-of-cocaine-reward-produced-by-a-continuous-fat-diet
#14
M Carmen Blanco-Gandía, Auxiliadora Aracil-Fernández, Sandra Montagud-Romero, Maria A Aguilar, Jorge Manzanares, José Miñarro, Marta Rodríguez-Arias
RATIONALE: Preclinical studies report that free access to a high-fat diet (HFD) alters the response to psychostimulants. OBJECTIVES: The aim of the present study was to examine how HFD exposure during adolescence modifies cocaine effects. Gene expression of CB1 and mu-opioid receptors (MOr) in the nucleus accumbens (N Acc) and prefrontal cortex (PFC) and ghrelin receptor (GHSR) in the ventral tegmental area (VTA) were assessed. METHODS: Mice were allowed continuous access to fat from PND 29, and the locomotor (10 mg/kg) and reinforcing effects of cocaine (1 and 6 mg/kg) on conditioned place preference (CPP) were evaluated on PND 69...
April 29, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28456840/rapid-evidence-review-of-the-comparative-effectiveness-harms-and-cost-effectiveness-of-pharmacogenomics-guided-antidepressant-treatment-versus-usual-care-for-major-depressive-disorder
#15
REVIEW
Kimberly Peterson, Eric Dieperink, Johanna Anderson, Erin Boundy, Lauren Ferguson, Mark Helfand
OBJECTIVE: This study aims to conduct an evidence review of the effectiveness, harms, and cost-effectiveness of pharmacogenomics-guided antidepressant treatment for major depressive disorder. METHODS: We searched MEDLINE®, the Cochrane Central Registry of Controlled Trials, and PsycINFO through February 2017. We used prespecified criteria to select studies, abstract data, and rate internal validity and strength of the evidence (PROSPERO number CRD42016036358). RESULTS: We included two randomized trials (RCT), five controlled cohort studies, and six modeling studies of mostly women in their mid-40s with few comorbidities...
April 29, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28451710/thalamic-inputs-to-dorsomedial-striatum-are-involved-in-inhibitory-control-evidence-from-the-five-choice-serial-reaction-time-task-in-rats
#16
Jasjot Saund, Daniel Dautan, Claire Rostron, Gonzalo P Urcelay, Todor V Gerdjikov
RATIONALE: Corticostriatal circuits are widely implicated in the top-down control of attention including inhibitory control and behavioural flexibility. However, recent neurophysiological evidence also suggests a role for thalamic inputs to striatum in behaviours related to salient, reward-paired cues. OBJECTIVES: Here, we used designer receptors exclusively activated by designer drugs (DREADDs) to investigate the role of parafascicular (Pf) thalamic inputs to the dorsomedial striatum (DMS) using the five-choice serial reaction time task (5CSRTT) in rats...
April 28, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28432376/mdma-does-not-alter-responses-to-the-trier-social-stress-test-in-humans
#17
Anya K Bershad, Melissa A Miller, Harriet de Wit
RATIONALE: ±3,4-Methylenedioxymethamphetamine (MDMA, "ecstasy") is a stimulant-psychedelic drug with unique social effects. It may dampen reactivity to negative social stimuli such as social threat and rejection. Perhaps because of these effects, MDMA has shown promise as a treatment for post-traumatic stress disorder (PTSD). However, the effect of single doses of MDMA on responses to an acute psychosocial stressor has not been tested. OBJECTIVES: In this study, we sought to test the effects of MDMA on responses to stress in healthy adults using a public speaking task...
April 21, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28429068/nicotine-deprivation-elevates-neural-representation-of-smoking-related-cues-in-object-sensitive-visual-cortex-a-proof-of-concept-study
#18
Anne Havermans, Onno C P van Schayck, Eric F P M Vuurman, Wim J Riedel, Job van den Hurk
OBJECTIVE: In the current study, we use functional magnetic resonance imaging (fMRI) and multi-voxel pattern analysis (MVPA) to investigate whether tobacco addiction biases basic visual processing in favour of smoking-related images. We hypothesize that the neural representation of smoking-related stimuli in the lateral occipital complex (LOC) is elevated after a period of nicotine deprivation compared to a satiated state, but that this is not the case for object categories unrelated to smoking...
April 21, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28429067/neuronal-oscillations-and-synchronicity-associated-with-gamma-hydroxybutyrate-during-resting-state-in-healthy-male-volunteers
#19
Robin von Rotz, Michael Kometer, Dario Dornbierer, Jürg Gertsch, M Salomé Gachet, Franz X Vollenweider, Erich Seifritz, Oliver G Bosch, Boris B Quednow
RATIONALE: Gamma-hydroxybutyrate (GHB) is a putative neurotransmitter, a drug of abuse, an anesthetic agent, and a treatment for neuropsychiatric disorders. In previous electroencephalography (EEG) studies, GHB was shown to induce an electrophysiological pattern of "paradoxical EEG-behavioral dissociation" characterized by increased delta and theta oscillations usually associated with sleep during awake states. However, no detailed source localization of these alterations and no connectivity analyses have been performed yet...
April 20, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28424834/effect-of-prior-foot-shock-stress-and-%C3%AE-9-tetrahydrocannabinol-cannabidiolic-acid-and-cannabidiol-on-anxiety-like-responding-in-the-light-dark-emergence-test-in-rats
#20
Erin M Rock, Cheryl L Limebeer, Gavin N Petrie, Lauren A Williams, Raphael Mechoulam, Linda A Parker
RATIONALE: Cannabis is commonly used by humans to relieve stress. OBJECTIVES AND METHODS: Here, we evaluate the potential of intraperitoneally (i.p.) administered Δ(9)-tetrahydrocannabiol (THC) and cannabidiolic acid (CBDA, the precursor of cannabidiol [CBD]) to produce dose-dependent effects on anxiety-like responding in the light-dark (LD) emergence test of anxiety-like responding in rats, when administered acutely or chronically (21 days). As well, we evaluate the potential of THC, CBDA, and CBD to reduce anxiogenic responding produced by foot shock (FS) stress 24 h prior to the LD test...
April 20, 2017: Psychopharmacology
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