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European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology

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https://www.readbyqxmd.com/read/29031837/impaired-contrast-sensitivity-at-low-spatial-frequency-in-cannabis-users-with-early-onset
#1
Laurence Lalanne, Eglantine Ferrand-Devouge, Sebastien Kirchherr, Lucie Rauch, Estelle Koning, Claude Speeg, Vincent Laprevote, Anne Giersch
The regular use of cannabis generates pronounced cognitive disorders, especially in users who begin before the age of 15-16. However, less is known about the impact of regular cannabis on visual function, especially in the case of early onset. Cannabinoid receptors (CB1) are expressed in areas of the visual system, like the thalamus and primary cortex, which might originate sensory disorders. Hence, we measured contrast sensitivity (CS) in three groups, i.e. cannabis users with late onset of cannabis use (after 16 years old), cannabis users with early onset"...
October 11, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29032922/serotonin-transporter-density-in-binge-eating-disorder-and-pathological-gambling-a-pet-study-with-11-c-madam
#2
Joonas Majuri, Juho Joutsa, Jarkko Johansson, Valerie Voon, Riitta Parkkola, Hannu Alho, Eveliina Arponen, Valtteri Kaasinen
Behavioral addictions, such as pathological gambling (PG) and binge eating disorder (BED), appear to be associated with specific changes in brain dopamine and opioid function, but the role of other neurotransmitter systems is less clear. Given the crucial role of serotonin in a number of psychiatric disorders, we aimed to compare brain serotonergic function among individuals with BED, PG and healthy controls. Seven BED patients, 13 PG patients and 16 healthy controls were scanned with high-resolution positron emission tomography (PET) using the serotonin transporter (SERT) tracer [(11)C]MADAM...
October 9, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28988944/efficacy-of-adding-nutritional-supplements-in-unipolar-depression-a-systematic-review-and-meta-analysis
#3
REVIEW
Cora Schefft, Laura L Kilarski, Tom Bschor, Stephan Köhler
In this article, we aimed to assess the efficacy of adjunctive administration of nutritional supplements to antidepressants by means of a systematic review and meta-analysis. The supplements included were inositol, vitamin D, folic acid, vitamin B12, S-adenosyl-L-methionine (SAMe), omega-3 polyunsaturated fatty acids (n-3 PUFA) and zinc. A structured database search (MEDLINE, EBSCO, CENTRAL, Web of Science) was performed using terms for the respective substances in conjunction with terms for depression and the mode of treatment ("add-on" OR "adjunctive" OR "augmentation")...
October 5, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28988943/how-addictive-are-gabapentin-and-pregabalin-a-systematic-review
#4
REVIEW
U Bonnet, N Scherbaum
In the last ten years, gabapentin and pregabalin have been becoming dispensed broadly and sold on black markets, thereby, exposing millions to potential side-effects. Meanwhile, several pharmacovigilance-databases have warned for potential abuse liabilities and overdose fatalities in association with both gabapentinoids. To evaluate their addiction risk in more detail, we conducted a systematic review on PubMed/Scopus and included 106 studies. We did not find convincing evidence of a vigorous addictive power of gabapentinoids which is primarily suggested from their limited rewarding properties, marginal notes on relapses, and the very few cases with gabapentinoid-related behavioral dependence symptoms (ICD-10) in patients without a prior abuse history (N=4)...
October 5, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28951000/nitric-oxide-interacts-with-monoamine-oxidase-to-modulate-aggression-and-anxiety-like-behaviour
#5
Héctor Carreño Gutiérrez, Aet O'Leary, Florian Freudenberg, Giorgio Fedele, Rob Wilkinson, Eleanor Markham, Freek van Eeden, Andreas Reif, William H J Norton
Nitric oxide (NO) is a gaseous neurotransmitter that has important behavioural functions in the vertebrate brain. In this study we compare the impact of decreased nitric NO signalling upon behaviour and neurobiology using both zebrafish and mouse. nitric oxide synthase mutant (nos1(-/-)) zebrafish show significantly reduced aggression and an increase in anxiety-like behaviour without altered production of the stress hormone cortisol. Nos1(-/-) mice also exhibit decreased aggression and are hyperactive in an open field test...
September 23, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28941995/neuropeptide-s-overcomes-short-term-memory-deficit-induced-by-sleep-restriction-by-increasing-prefrontal-cortex-activity
#6
Julien Thomasson, Frédéric Canini, Betty Poly-Thomasson, Marion Trousselard, Sylvie Granon, Frédéric Chauveau
Sleep restriction (SR) impairs short term memory (STM) that might be related to different processes. Neuropeptide S (NPS), an endogenous neuropeptide that improves short term memory, activates arousal and decreases anxiety is likely to counteract the SR-induced impairment of STM. The objective of the present study was to find common cerebral pathways in sleep restriction and NPS action in order to ultimately antagonize SR effect on memory. The STM was assessed using a spontaneous spatial alternation task in a T-maze...
September 20, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28939165/decrease-in-nmda-receptor-signalling-activity-in-the-anterior-cingulate-cortex-diminishes-defensive-behaviour-and-unconditioned-fear-induced-antinociception-elicited-by-gabaergic-tonic-inhibition-impairment-in-the-posterior-hypothalamus
#7
Luiz Luciano Falconi-Sobrinho, Tayllon Dos Anjos-Garcia, Ricardo de Oliveira, Norberto Cysne Coimbra
Acute γ-aminobutyric acid (GABA) disinhibition in the posterior hypothalamus (PH) elicits defensive reactions that are considered anxiety- and panic attack-like behaviour, and these defensive reactions are followed by antinociception. Evidence indicates that the PH connects with the medial prefrontal cortex, particularly the anterior cingulate cortex (ACC), which seems to regulate these unconditioned fear-induced defensive responses. However, few studies have shown the participation of cortical regions in the control of behavioural and antinociceptive responses organised by diencephalic structures...
September 19, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28939164/exogenous-testosterone-in-a-non-social-provocation-paradigm-potentiates-anger-but-not-behavioral-aggression
#8
Despina Panagiotidis, Benjamin Clemens, Ute Habel, Frank Schneider, Isabella Schneider, Lisa Wagels, Mikhail Votinov
Animal studies suggest a causal link between testosterone and aggression. However, in human research the exact role of this hormone is still unclear, having been linked to dominance and approach behavior rather than to aggression per se. In a social context, the induction of aggression might be confounded with dominance or status changes, which potentially influence the association between aggression and testosterone. The objective of the current study was to investigate the influence of testosterone on non-social aggression in a double-blind, placebo-controlled experiment including 90 healthy male participants...
September 19, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28939163/systematic-review-baclofen-dosing-protocols-for-alcohol-use-disorders-used-in-observational-studies
#9
REVIEW
Andrew Thompson, Lynn Owens, Paul Richardson, Munir Pirmohamed
The popularity of baclofen as an anti-craving agent in the treatment of alcohol use disorders (AUDs) has increased, especially in patients with established liver disease. However, evidence-based guidelines to inform practice are lacking. The aim of this systematic review is explore the prescribing practices of baclofen in AUD treatment. Electronic databases were searched for relevant articles from 2002. Assessment of eligibility criteria for inclusion was performed independently by two investigators. The main outcomes of interest were maximum dose, starting dose, titration regimen, effectiveness, and tolerability...
September 19, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28939162/distinct-lithium-induced-gene-expression-effects-in-lymphoblastoid-cell-lines-from-patients-with-bipolar-disorder
#10
Gabriel R Fries, Gabriela D Colpo, Nancy Monroy-Jaramillo, Junfei Zhao, Zhongming Zhao, Jodi G Arnold, Charles L Bowden, Consuelo Walss-Bass
Lithium is the most commonly prescribed medication for the treatment of bipolar disorder (BD), yet the mechanisms underlying its beneficial effects are still unclear. We aimed to compare the effects of lithium treatment in lymphoblastoid cell lines (LCLs) from BD patients and controls. LCLs were generated from sixty-two BD patients (based on DSM-IV) and seventeen healthy controls matched for age, sex, and ethnicity. Patients were recruited from outpatient clinics from February 2012 to October 2014. LCLs were treated with 1mM lithium for 7 days followed by microarray gene expression assay and validation by real-time quantitative PCR...
September 19, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28935269/randomized-trial-of-omega-3-for-autism-spectrum-disorders-effect-on-cell-membrane-composition-and-behavior
#11
Mara Parellada, Cloe Llorente, Rosa Calvo, Silvia Gutierrez, Luisa Lázaro, Montserrat Graell, Maria Guisasola, Maria Luisa Dorado, Leticia Boada, Jose Romo, Elena Dulin, Inmaculada Sanz, Celso Arango, Carmen Moreno
A high ω6/ω3 ratio [fatty acid (FA) index] in the cell membrane has been associated with inadequate brain development. It has started to be used as a biomarker of treatment efficacy in human diseases. The aim of this study was to investigate if omega-3 supplementation improves erythrocyte membrane ω6/ω3, plasma antioxidant status (TAS) and autistic behaviors. A randomized, crossover, placebo-controlled study was designed to investigate the effect of 8 weeks of supplementation with ω3 (962mg/d and 1155mg/d for children and adolescents, respectively)...
September 18, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28935268/repeated-cortisol-administration-does-not-reduce-intrusive-memories-a-double-blind-placebo-controlled-experimental-study
#12
Alexandra Heike Graebener, Tanja Michael, Elena Holz, Johanna Lass-Hennemann
PTSD is a severe mental disorder, which may develop after exposure to traumatic events and is characterized by intrusive memories. Intrusions are sudden brief sensory memories of the traumatic event, that cause immense distress and impairment in every day functioning. Thus, the reduction of intrusive memories is one of the main aims of PTSD therapy. Recently, the glucocorticoid cortisol has been proposed as a pharmacological option to reduce intrusive memories, because cortisol is known to have memory retrieval inhibiting effects...
September 18, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28935267/methylphenidate-doses-in-attention-deficit-hyperactivity-disorder-and-comorbid-substance-use-disorders
#13
Charlotte Skoglund, Lena Brandt, Brian D'Onofrio, Henrik Larsson, Johan Franck
Patients with Attention Deficit/Hyperactivity Disorder (ADHD) and comorbid Substance Use Disorders (SUD) are increasingly being treated with central stimulant medication despite limited evidence for its effectiveness. Lack of longitudinal follow-up studies of dosing and adverse effects has resulted in conflicting treatment guidelines. This study aims to explore whether individuals with ADHD and comorbid SUD are treated with higher stimulant doses than individuals with ADHD only, and whether doses increase over time as a sign of tolerance, a core symptom of addiction...
September 18, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28888350/anterior-cingulate-cortex-grey-matter-volume-abnormalities-in-adolescents-with-ptsd-after-childhood-sexual-abuse
#14
Mirjam A Rinne-Albers, J Nienke Pannekoek, Marie-José van Hoof, Natasja D van Lang, Francien Lamers-Winkelman, Serge A Rombouts, Nic J van der Wee, Robert R Vermeiren
Adverse childhood experiences (ACE) substantially increase the risk of later psychiatric and somatic pathology. While neurobiological factors are likely to play a mediating role, specific insights are lacking. The scarce neuroimaging studies in traumatised pediatric populations have provided inconsistent results, potentially due to the inclusion of different types of trauma. To further improve our understanding of the neurobiology of pediatric psychotrauma, this study seeks to investigate abnormalities in grey matter volume (GMV) in a homogeneous group of adolescents with posttraumatic stress disorder (PTSD) due to childhood sexual abuse (CSA) and the relationship between GMV and symptom severity...
September 6, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28886897/low-adherence-to-antidepressants-is-associated-with-increased-mortality-following-stroke-a-large-nationally-representative-cohort-study
#15
Amir Krivoy, Brendon Stubbs, Ran D Balicer, Shira Weizman, Becca Feldman, Moshe Hoshen, Gil Zalsman, Eldar Hochman, Gal Shoval
Post stroke depression is common and pervasive. In the general population, there has been some controversy that antidepressant (AD) medication is associated with premature mortality. Data is still lacking regarding the association between adherence to antidepressants (AD) and all-cause mortality. In this retrospective analysis of a population-based cohort of patients, 32,361 post-stroke patients who purchased at least one AD were followed for all-cause mortality over 4-years. Adherence to AD was measured as a ratio between dispensed and prescribed durations and was modeled as: non-adherence (<20%, n=8619), poor (20-50%, n=5108), moderate (50-80%, n=5656), and good (>80%, n=12,978) adherence...
September 5, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28882405/efficacy-of-quetiapine-xr-vs-placebo-as-concomitant-treatment-to-mood-stabilizers-in-the-control-of-subthreshold-symptoms-of-bipolar-disorder-results-from-a-pilot-randomized-controlled-trial
#16
Marina Garriga, Eva Solé, Ana González-Pinto, Gabriel Selva-Vera, Belén Arranz, Benedikt L Amann, Jerónimo Saiz-Ruiz, Josefina Pérez-Blanco, Eduard Vieta
Patients with bipolar disorder (BD) do not always achieve full remission between episodes. Subthreshold symptoms (depressive, manic or mixed) represent a major cause of relapse and disability in these patients. Immediate release (IR) and extended release (XR) formulations of quetiapine are both indicated for short and long-term treatment of BD. The aim of this study was to evaluate the efficacy of quetiapine XR vs placebo in subthreshold symptomatology when added to previous mood stabilizer treatment. A pilot phase IIIB, multicentre, prospective, placebo controlled, randomized, double blinded study of 12 weeks follow-up was performed (NCT01197846)...
September 4, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28867303/treatment-with-a-glp-1r-agonist-over-four-weeks-promotes-weight-loss-moderated-changes-in-frontal-striatal-brain-structures-in-individuals-with-mood-disorders
#17
Rodrigo B Mansur, Andre Zugman, Juhie Ahmed, Danielle S Cha, Mehala Subramaniapillai, Yena Lee, Julie Lovshin, Jung G Lee, Jae-Hon Lee, Vladislav Drobinin, Jason Newport, Elisa Brietzke, Eva Z Reininghaus, Kang Sim, Maj Vinberg, Natalie Rasgon, Tomas Hajek, Roger S McIntyre
Cognitive deficits are a core feature across psychiatric disorders. Emerging evidence indicates that metabolic pathways are highly relevant for the substrates and phenomenology of the cognitive domain. Herein, we aimed to determine the effects of liraglutide, a GLP-1R agonist, on brain structural/volumetric parameters in adults with a mood disorder. This is the secondary analysis of a 4-week, pilot, proof-of-concept, open-label study. Participants (N=19) exhibiting impairments in executive function with either major depressive disorder (MDD) or bipolar disorder (BD) were recruited...
August 31, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28866005/discrete-memory-impairments-in-largely-pure-chronic-users-of-mdma
#18
Michael D Wunderli, Matthias Vonmoos, Marina Fürst, Katrin Schädelin, Thomas Kraemer, Markus R Baumgartner, Erich Seifritz, Boris B Quednow
Chronic use of 3,4-methylenedioxymethamphetamine (MDMA, "ecstasy") has repeatedly been associated with deficits in working memory, declarative memory, and executive functions. However, previous findings regarding working memory and executive function are inconclusive yet, as in most studies concomitant stimulant use, which is known to affect these functions, was not adequately controlled for. Therefore, we compared the cognitive performance of 26 stimulant-free and largely pure (primary) MDMA users, 25 stimulant-using polydrug MDMA users, and 56 MDMA/stimulant-naïve controls by applying a comprehensive neuropsychological test battery...
August 30, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28822602/time-dependent-role-of-prefrontal-cortex-and-hippocampus-on-cognitive-improvement-by-aripiprazole-in-olfactory-bulbectomized-mice
#19
Kohei Takahashi, Osamu Nakagawasai, Wataru Nemoto, Takayo Odaira, Yuichiro Arai, Tadashi Hisamitsu, Koichi Tan-No
Dopamine (DA) modulates cognitive functions in the prefrontal cortex (PFC) and hippocampus. Olfactory bulbectomy (OBX) in mice induces cognitive dysfunctions. Recently, we reported that aripiprazole (ARI) normalizes the behavioral hyper-responsivity to DA agonists in OBX mice. However, it remains unclear whether ARI affects OBX-induced cognitive dysfunctions. To address this question we evaluated ARI-treated and untreated OBX mice in a passive avoidance test. Then, we investigated the effects of ARI on cell proliferation in the hippocampal dentate gyrus by immunohistochemistry, and on c-fos levels in the PFC and hippocampus, as well as nerve growth factor (NGF) levels in the hippocampus by western blotting...
August 16, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28807619/neuroplasticity-related-mechanisms-underlying-the-antidepressant-like-effects-of%C3%A2-traditional-herbal-medicines
#20
REVIEW
Yafit Hirshler, Ravid Doron
Traditional herbal medicine can offer efficacious and safe alternative pharmacotherapies for depression. The ability of an herbal medicine to produce neuroadaptive processes, that enhance neuroplasticity and cellular resilience in response to chronic stress, may point to its antidepressant potential. We suggest that among many investigated herbal medicines, those that can enhance neuroplasticity may have stronger therapeutic potential. The current article presents a summary of traditional herbal medicines, which are thought to exert antidepressant-like effects in chronic stress models via neuroplasticity enhancement...
August 12, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
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