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Journal of Psychopharmacology

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https://www.readbyqxmd.com/read/28747086/menthol-enhances-nicotine-induced-locomotor-sensitization-and-in-vivo-functional-connectivity-in-adolescence
#1
Matthew F Thompson, Guillaume L Poirier, Martha I Dávila-García, Wei Huang, Kelly Tam, Maxwell Robidoux, Michelle L Dubuke, Scott A Shaffer, Luis Colon-Perez, Marcelo Febo, Joseph R DiFranza, Jean A King
Mentholated cigarettes capture a quarter of the US market, and are disproportionately smoked by adolescents. Menthol allosterically modulates nicotinic acetylcholine receptor function, but its effects on the brain and nicotine addiction are unclear. To determine if menthol is psychoactive, we assessed locomotor sensitization and brain functional connectivity. Adolescent male Sprague Dawley rats were administered nicotine (0.4 mg/kg) daily with or without menthol (0.05 mg/kg or 5.38 mg/kg) for nine days. Following each injection, distance traveled in an open field was recorded...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28741423/cognitive-control-in-young-adults-with-cannabis-use-disorder-an-event-related-brain-potential-study
#2
David Lr Maij, Ben Jm van de Wetering, Ingmar Ha Franken
Contemporary models of substance use disorders emphasize the role of cognitive control, which has been linked to difficulties in resisting the use of substances. In the present study, we measured two aspects of cognitive control, response inhibition (operationalized by a Go/NoGo Task) and performance monitoring (operationalized by an Eriksen Flanker Task), in a group of young cannabis-use disorder (CUD) patients and compared these functions with two control groups (i.e. a group of cigarette smokers and a group of non-smokers)...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28741422/longitudinal-study-of-hippocampal-volumes-in-heavy-cannabis-users
#3
L Koenders, V Lorenzetti, L de Haan, C Suo, Wam Vingerhoets, W van den Brink, R W Wiers, C J Meijer, Mwj Machielsen, A E Goudriaan, D J Veltman, M Yücel, J Cousijn
BACKGROUND: Cannabis exposure, particularly heavy cannabis use, has been associated with neuroanatomical alterations in regions rich with cannabinoid receptors such as the hippocampus in some but not in other (mainly cross-sectional) studies. However, it remains unclear whether continued heavy cannabis use alters hippocampal volume, and whether an earlier age of onset and/or a higher dosage exacerbate these changes. METHODS: Twenty heavy cannabis users (mean age 21 years, range 18-24 years) and 23 matched non-cannabis using healthy controls were submitted to a comprehensive psychological assessment and magnetic resonance imaging scan at baseline and at follow-up (average of 39 months post-baseline; standard deviation=2...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28720013/the-5-ht1b-serotonin-receptor-regulates-methylphenidate-induced-gene-expression-in-the-striatum-differential-effects-on-immediate-early-genes
#4
David Alter, Joel A Beverley, Ronak Patel, Carlos A Bolaños-Guzmán, Heinz Steiner
Drug combinations that include a psychostimulant such as methylphenidate (Ritalin) and a selective serotonin reuptake inhibitor such as fluoxetine are indicated in several medical conditions. Co-exposure to these drugs also occurs with "cognitive enhancer" use by individuals treated with selective serotonin reuptake inhibitors. Methylphenidate, a dopamine reuptake inhibitor, by itself produces some addiction-related gene regulation in the striatum. We have demonstrated that co-administration of selective serotonin reuptake inhibitors potentiates these methylphenidate-induced molecular effects, thus producing a more "cocaine-like" profile...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28718346/effect-of-desvenlafaxine-50-mg-and-100-mg-on-energy-and-lassitude-in-patients-with-major-depressive-disorder-a-pooled-analysis
#5
Raymond W Lam, Dalia B Wajsbrot, Ellen Meier, Elizabeth Pappadopulos, Joan A Mackell, Matthieu Boucher
Nine randomized, double-blind, placebo-controlled studies of major depressive disorder were pooled to evaluate the effects of desvenlafaxine 50- and 100-mg/d on energy and lassitude in adults with major depressive disorder ( n=4279). Changes from baseline to endpoint in 17-item Hamilton Rating Scale for Depression (HAM-D17) Work and Activities, Retardation, and Somatic Symptoms General items, HAM-D17 psychomotor retardation factor, and Montgomery-Åsberg Depression Rating Scale Lassitude item were analyzed with a mixed model for repeated measures analysis of variance...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28695777/the-limited-impact-that-cocaine-use-patterns-have-on-neurocognitive-functioning-in-individuals-with-cocaine-use-disorder
#6
James J Mahoney, Ari D Kalechstein, Thomas F Newton, Richard De La Garza
It is well-documented in the literature that cocaine use is associated with neurocognitive impairment. The manner in which patterns of cocaine use, such as years of use, recent use over the past month, and daily amount of cocaine use, moderate neurocognition has been studied in a relatively piecemeal manner. Hence, the purpose of the study was to evaluate whether cocaine use patterns modulate neurocognition in individuals with cocaine use disorder. Cocaine users who were cocaine-negative ( n=125) were divided into tertiles based on cocaine use patterns and the performances of the highest and lowest groups were compared on the following cognitive measures: Continuous Performance Task-II, n-back, and Hopkins Verbal Learning Task-Revised...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28693371/who-is-molly-mdma-adulterants-by-product-name-and-the-impact-of-harm-reduction-services-at-raves
#7
Sarah Saleemi, Steven J Pennybaker, Missi Wooldridge, Matthew W Johnson
Methylenedioxymethamphetamine (MDMA), often sold as 'Ecstasy' or 'Molly', is commonly used at music festivals and reported to be responsible for an increase in deaths over the last decade. Ecstasy is often adulterated and contains compounds that increase morbidity and mortality. While users and clinicians commonly assume that products sold as Molly are less-adulterated MDMA products, this has not been tested. Additionally, while pill-testing services are sometimes available at raves, the assumption that these services decrease risky drug use has not been studied...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28661259/gonadotrophin-releasing-hormone-agonist-treatment-for-sexual-offenders-a-systematic-review
#8
Alexandra Lewis, Don Grubin, Callum C Ross, Mrigendra Das
BACKGROUND: Sexual offending is a significant international issue causing long-term consequences for victims, perpetrators and society. AIMS: The purpose of this study was to review the existing research data assessing the efficacy of gonadotrophin-releasing hormone agonists for treating adult, male, sexual offenders. METHOD: The method of this review involved the examination of studies involving participants prescribed at least one month of a gonadotrophin-releasing hormone agonist for the purposes of reducing sexual drive related to offending...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28661258/antidepressant-like-effect-of-a-new-selenium-containing-compound-is-accompanied-by-a-reduction-of-neuroinflammation-and-oxidative-stress-in-lipopolysaccharide-challenged-mice
#9
Angela M Casaril, Micaela Domingues, Mariana Fronza, Beatriz Vieira, Karine Begnini, Eder J Lenardão, Fabiana K Seixas, Tiago Collares, Cristina W Nogueira, Lucielli Savegnago
Organoselenium compounds and indoles have gained attention due to their wide range of pharmacological properties. Depression is a recurrent and disabling psychiatric illness and current evidences support that oxidative stress and neuroinflammation are mechanisms underlying the pathophysiology of this psychiatric condition. Here, we evaluated the effect of 3-((4-chlorophenyl)selanyl)-1-methyl-1H-indole (CMI) in lipopolysaccharide (LPS)-induced depressive-like behaviour, neuroinflammation and oxidative stress in male mice...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28661257/recreational-3-4-methylenedioxymethamphetamine-or-ecstasy-current-perspective-and-future-research-prospects
#10
Andrew C Parrott, Luke A Downey, Carl A Roberts, Cathy Montgomery, Raimondo Bruno, Helen C Fox
AIMS: The purpose of this article is to debate current understandings about the psychobiological effects of recreational 3,4-methylenedioxymethamphetamine (MDMA or 'ecstasy'), and recommend theoretically-driven topics for future research. METHODS: Recent empirical findings, especially those from novel topic areas were reviewed. Potential causes for the high variance often found in group findings were also examined. RESULTS AND CONCLUSIONS: The first empirical reports into psychobiological and psychiatric aspects from the early 1990s concluded that regular users demonstrated some selective psychobiological deficits, for instance worse declarative memory, or heightened depression...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28656805/verbal-working-memory-related-functional-connectivity-alterations-in-boys-with-attention-deficit-hyperactivity-disorder-and-the-effects-of-methylphenidate
#11
Zhao-Min Wu, Janita Bralten, Li An, Qing-Jiu Cao, Xiao-Hua Cao, Li Sun, Lu Liu, Li Yang, Maarten Mennes, Yu-Feng Zang, Barbara Franke, Martine Hoogman, Yu-Feng Wang
OBJECTIVE: Few studies have investigated verbal working memory-related functional connectivity patterns in participants with attention-deficit/hyperactivity disorder (ADHD). Thus, we aimed to compare working memory-related functional connectivity patterns in healthy children and those with ADHD, and study effects of methylphenidate (MPH). METHOD: Twenty-two boys with ADHD were scanned twice, under either MPH (single dose, 10 mg) or placebo, in a randomised, cross-over, counterbalanced placebo-controlled design...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28655286/a-group-ii-metabotropic-glutamate-receptor-3-mglu3-grm3-isoform-implicated-in-schizophrenia-interacts-with-canonical-mglu3-and-reduces-ligand-binding
#12
Aintzane García-Bea, Isabel Bermudez, Paul J Harrison, Tracy A Lane
As well as being expressed as a full-length transcript, the group II metabotropic glutamate receptor 3 (GRM3, mGlu3) gene is expressed as an mRNA isoform which lacks exon 4 (GRM3Δ4) and which is predicted to encode a protein with a novel C terminus (called mGlu3Δ4). This variant may contribute to the mechanism by which GRM3 acts as a schizophrenia risk gene. However, little is known about the properties or function of mGlu3Δ4. Here, using transiently transfected HEK293T/17 cells, we confirm that GRM3Δ4 cDNA is translated, with mGlu3Δ4 existing as a homodimer as well as a monomer, and localizing primarily to cell membranes including the plasma membrane...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28653857/anti-inflammatory-treatment-for-major-depressive-disorder-implications-for-patients-with-an-elevated-immune-profile-and-non-responders-to-standard-antidepressant-therapy
#13
Paula Kopschina Feltes, Janine Doorduin, Hans C Klein, Luis Eduardo Juárez-Orozco, Rudi Ajo Dierckx, Cristina M Moriguchi-Jeckel, Erik Fj de Vries
Major depressive disorder (MDD) is a prevalent and disabling psychiatric disease with rates of non-responsiveness to antidepressants ranging from 30-50%. Historically, the monoamine depletion hypothesis has dominated the view on the pathophysiology of depression. However, the lack of responsiveness to antidepressants and treatment resistance suggests that additional mechanisms might play a role. Evidence has shown that a subgroup of depressive patients may have an underlying immune deregulation that could explain the lack of therapeutic benefit from antidepressants...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28648138/psychological-symptomatology-and-impaired-prepulse-inhibition-of-the-startle-reflex-are-associated-with-cannabis-induced-psychosis
#14
Isabel Morales-Muñoz, Isabel Martínez-Gras, Guillermo Ponce, Javier de la Cruz, David Lora, Roberto Rodríguez-Jiménez, Rosa Jurado-Barba, Francisco Navarrete, María Salud García-Gutiérrez, Jorge Manzanares, Gabriel Rubio
BACKGROUND: Cannabis-induced psychotic disorder (CIPD) is a psychiatric disorder induced by cannabis consumption. The psychological and psychophysiological features of this disorder are still unknown. We aimed to examine the psychological, personality and psychophysiological features of patients with CIPD. This study is an analytical extension of our previously published data, which previously found prepulse inhibition (PPI) deficits in the CIPD group used in this current paper. METHODS: We used a sample of 45 patients with CIPD...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28648101/an-exploratory-study-of-information-sources-and-key-findings-on-uk-cocaine-related-deaths
#15
John M Corkery, Hugh Claridge, Christine Goodair, Fabrizio Schifano
Cocaine-related deaths have increased since the early 1990s in Europe, including the UK. Being multi-factorial, they are difficult to define, detect and record. The European Monitoring Centre for Drugs and Drug Addiction commissioned research to: describe trends reported to Special Mortality Registries and General Mortality Registers; provide demographic and drug-use characteristic information of cases; and establish how deaths are identified and classified. A questionnaire was developed and piloted amongst all European Monitoring Centre for Drugs and Drug Addiction Focal Point experts/Special Mortality Registries: 19 (63%) responded; nine countries provided aggregated data...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28635375/therapeutic-effect-of-increased-openness-investigating-mechanism-of-action-in-mdma-assisted-psychotherapy
#16
Mark T Wagner, Michael C Mithoefer, Ann T Mithoefer, Rebecca K MacAulay, Lisa Jerome, Berra Yazar-Klosinski, Rick Doblin
A growing body of research suggests that traumatic events lead to persisting personality change characterized by increased neuroticism. Relevantly, enduring improvements in Post-Traumatic Stress Disorder (PTSD) symptoms have been found in response to 3,4-methylenedioxymethamphetamine (MDMA)-assisted psychotherapy. There is evidence that lasting changes in the personality feature of "openness" occur in response to hallucinogens, and that this may potentially act as a therapeutic mechanism of change. The present study investigated whether heightened Openness and decreased Neuroticism served as a mechanism of change within a randomized trial of MDMA-assisted psychotherapy for chronic, treatment-resistant PTSD...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28633600/direct-comparison-of-tricyclic-and-serotonin-reuptake-inhibitor-antidepressants-in-randomized-head-to-head-trials-in-acute-major-depression-systematic-review-and-meta-analysis
#17
Juan Undurraga, Ross J Baldessarini
BACKGROUND: A comparison across trials conducted over several decades suggested superior efficacy of tricyclic antidepressants (TCAs) over selective serotonin-reuptake inhibitors (SSRIs). However, this outcome may reflect a selective secular decline of responses after randomization to placebo. Remaining uncertainty encouraged direct comparison of the drug-types in trials involving randomized, head-to-head comparisons. METHODS: We systematically identified reports of randomized trials of TCAs versus SSRIs for major depression in several digital databases, and applied standard meta-analytic and multiple-factor regression methods to analyze and pool the findings...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28633582/dopamine-and-light-effects-on-facial-emotion-recognition
#18
Elizabeth Cawley, Maria Tippler, Nicholas J Coupland, Chawki Benkelfat, Diane B Boivin, Marije Aan Het Rot, Marco Leyton
Bright light can affect mood states and social behaviours. Here, we tested potential interacting effects of light and dopamine on facial emotion recognition. Participants were 32 women with subsyndromal seasonal affective disorder tested in either a bright (3000 lux) or dim light (10 lux) environment. Each participant completed two test days, one following the ingestion of a phenylalanine/tyrosine-deficient mixture and one with a nutritionally balanced control mixture, both administered double blind in a randomised order...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28631527/buprenorphine-naloxone-versus-methadone-and-lofexidine-in-community-stabilisation-and-detoxification-a-randomised-controlled-trial-of-low-dose-short-term-opiate-dependent-individuals
#19
Fergus D Law, Alison M Diaper, Jan K Melichar, Simon Coulton, David J Nutt, Judy S Myles
Buprenorphine/naloxone, methadone and lofexidine are medications with utility in the treatment of opiate withdrawal. We report the first randomised controlled trial to compare the effects of these two medications on withdrawal symptoms and outcome during opiate induction/stabilisation and detoxification. A double-blind randomised controlled trial was conducted in an outpatient satellite clinic of a specialist drug service. Eighty opiate dependent individuals meeting DSM-IV criteria for opiate dependence, using ⩽ ½ g heroin smoked/chased or ¼ g heroin injected or ⩽ 30mg methadone, with ⩽ 3 years of opioid dependency, underwent a short-term opiate treatment programme involving induction/stabilisation on methadone 30mg or buprenorphine/naloxone 4mg/1mg, followed by detoxification (where the methadone group was assisted by lofexidine)...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28631526/lifetime-experience-with-classic-psychedelics-predicts-pro-environmental-behavior-through-an-increase-in-nature-relatedness
#20
Matthias Forstmann, Christina Sagioglou
In a large-scale ( N = 1487) general population online study, we investigated the relationship between past experience with classic psychedelic substances (e.g. LSD, psilocybin, mescaline), nature relatedness, and ecological behavior (e.g. saving water, recycling). Using structural equation modeling we found that experience with classic psychedelics uniquely predicted self-reported engagement in pro-environmental behaviors, and that this relationship was statistically explained by people's degree of self-identification with nature...
June 1, 2017: Journal of Psychopharmacology
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