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Neuropsychopharmacology

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https://www.readbyqxmd.com/read/29134962/role-of-glutamatergic-projections-from-the-ventral-ca1-to-infralimbic-cortex-in-context-induced-reinstatement-of-heroin-seeking
#1
Na Wang, Feifei Ge, Cailian Cui, Yijing Li, Xiaowei Sun, Linlin Sun, Xinjuan Wang, Shuli Liu, Haolin Zhang, Yan Liu, Meng Jia, Mingda Yang
The prelimbic cortex (PL) and infralimbic cortex (IL) play a role in context-induced reinstatement of heroin seeking in an animal model of drug relapse. Both the PL and IL receive direct glutamatergic projections from the ventral CA1 (vCA1), which is also involved in context-induced reinstatement of cocaine and heroin seeking. Here we studied the role of vCA1-PL and vCA1-IL projections in context-induced reinstatement of heroin seeking by using electrophysiological, neuropharmacological, chemogenetic and molecular methods...
November 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29134961/the-impact-of-combinations-of-alcohol-nicotine-and-cannabis-on-dynamic-brain-connectivity
#2
Victor M Vergara, Barbara J Weiland, Kent Hutchison, Vince D Calhoun
Alcohol, nicotine and cannabis are among the most commonly used drugs. A prolonged and combined use of these substances can alter normal brain wiring in different ways depending on the consumed cocktail mixture. Brain connectivity alterations and their change with time can be assessed using functional magnetic resonance imaging (fMRI) because of its spatial and temporal content. Here, we estimated dynamic functional network connectivity (dFNC) as derived from fMRI data to investigate the effects of single or combined use of alcohol, nicotine and cannabis...
November 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29114105/neuregulin-3-signaling-mediates-nicotine-dependent-synaptic-plasticity-in-the-orbitofrontal-cortex-and-cognition
#3
Luyi Zhou, Miranda L Fisher, Robert D Cole, Thomas J Gould, Vinay Parikh, Pavel I Ortinski, Jill R Turner
Neuregulin 3 (NRG3) and ErbB4 have been linked to nicotine addiction; however, the neuronal mechanisms and behavioral consequences of NRG3-ErbB4 sensitivity to nicotine remain elusive. Recent literature suggests that relapse to smoking is due to a lack of impulsive control, which is thought to be due to altered functioning within the orbitofrontal cortex (OFC). Therefore, we examined circuitry changes within this structure following nicotine application. We report that nicotine controls synaptic plasticity in the OFC through NRG3/ErbB4-dependent regulation of GABAergic inhibition...
November 7, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29114104/bidirectional-regulation-of-aggression-in-mice-by-hippocampal-alpha-7-nicotinic-acetylcholine-receptors
#4
Alan S Lewis, Steven T Pittenger, Yann S Mineur, Dawson Stout, Philip H Smith, Marina R Picciotto
Humans with 15q13.3 microdeletion syndrome (15q13.3DS) are typically hemizygous for CHRNA7, the gene coding for the α7 nicotinic acetylcholine receptor (nAChR), and manifest a variable neuropsychiatric phenotype that frequently includes persistent aggression. In mice, nAChR activation by nicotine is anti-aggressive, or 'serenic', an effect which requires α7 nAChRs and is recapitulated by GTS-21, an α7 nAChR partial agonist. Pharmacotherapies potentiating α7 nAChR signaling have also been shown to reduce aggression in human 15q13...
November 7, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29114103/association-of-serotonin-transporter-gene-alujb-methylation-with-major-depression-amygdala-responsiveness-5-httlpr-rs25531-polymorphism-and-stress
#5
Ilona Schneider, Harald Kugel, Ronny Redlich, Dominik Grotegerd, Christian Bürger, Paul-Christian Bürkner, Nils Opel, Katharina Dohm, Dario Zaremba, Susanne Meinert, Nina Schröder, Anna Milena Straßburg, Kathrin Schwarte, Christiane Schettler, Oliver Ambrée, Stephan Rust, Katharina Domschke, Volker Arolt, Walter Heindel, Bernhard T Baune, Weiqi Zhang, Udo Dannlowski, Christa Hohoff
DNA methylation profiles of the serotonin transporter gene (SLC6A4) have been shown to alter SLC6A4 expression, drive antidepressant treatment response and modify brain functions. This study investigated whether methylation of an AluJb element in the SLC6A4 promotor was associated with major depressive disorder (MDD), amygdala reactivity to emotional faces, 5-HTTLPR/rs25531 polymorphism, and recent stress. MDD patients (n=122) and healthy controls (HC, n=176) underwent fMRI during an emotional face-matching task...
November 7, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29105665/s-ketamine-induced-nmda-receptor-blockade-during-natural-speech-production-and-its-implications-for-formal-thought-disorder-in-schizophrenia-a-pharmaco-fmri-study
#6
Arne Nagels, Maurice Cabanis, Andrea Oppel, Andre Kirner-Veselinovic, Christian Schales, Tilo Kircher
Structural and functional changes in the lateral temporal language areas have been related to formal thought disorder (FTD) in schizophrenia. Continuous, natural speech production activates the right lateral temporal lobe in schizophrenia, as opposed to the left in healthy subjects. Positive and negative FTD can be elicited in healthy subjects by glutamatergic NMDA blockade with ketamine. It is unclear, whether the glutamate system is related to the reversed hemispheric lateralization during speaking in patients...
November 6, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29105664/brain-behavior-participant-similarity-networks-among-youth-and-emerging-adults-with-schizophrenia-spectrum-autism-spectrum-or-bipolar-disorder-and-matched-controls
#7
Laura Stefanik, Lauren Erdman, Stephanie H Ameis, George Foussias, Benoit H Mulsant, Tina Behdinan, Anna Goldenberg, Lauren J O'Donnell, Aristotle N Voineskos
There is considerable heterogeneity in social cognitive and neurocognitive performance among people with schizophrenia spectrum disorders (SSD), autism spectrum disorders (ASD), bipolar disorder (BD), and healthy individuals. This study used Similarity Network Fusion (SNF), a novel data-driven approach, to identify participant similarity networks based on relationships among demographic, brain imaging, and behavioral data. T1-weighted and diffusion-weighted magnetic resonance images were obtained for 174 adolescents and young adults (aged 16-35 years) with an SSD (n=51), an ASD without intellectual disability (n=38), euthymic BD (n=34), and healthy controls (n=51)...
November 6, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29105663/exacerbated-craving-in-the-presence-of-stress-and-drug-cues-in-drug-dependent-patients
#8
Kenzie L Preston, William J Kowalczyk, Karran A Phillips, Michelle L Jobes, Massoud Vahabzadeh, Jia-Ling Lin, Mustapha Mezghanni, David H Epstein
In addiction, risk factors for craving and use include stress and drug-related cues. Stress and cues have additive or more-than-additive effects on drug seeking in laboratory animals, but, surprisingly, seem to compete with one another (ie, exert less-than-additive effects) in human laboratory studies of craving. We sought heretofore elusive evidence that human drug users could show additive (or more-than-additive) effects of stress and cues on craving, using ecological momentary assessment (EMA). Outpatients (N=182) maintained on daily buprenorphine or methadone provided self-reports of stress, craving, mood, and behavior on electronic diaries for up to 16 weeks...
November 6, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29105662/neural-correlates-of-impaired-reward-effort-integration-in-remitted-bulimia-nervosa
#9
Stefanie Verena Mueller, Yosuke Morishima, Simon Schwab, Roland Wiest, Andrea Federspiel, Gregor Hasler
The integration of reward magnitudes and effort costs is required for an effective behavioral guidance. This reward-effort integration was reported to be dependent on dopaminergic neurotransmission. As bulimia nervosa has been associated with a dysregulated dopamine system and catecholamine depletion led to reward processing deficits in remitted bulimia nervosa, the purpose of this study was to identify the role of catecholamine dysfunction and its relation to behavioral and neural reward-effort integration in bulimia nervosa...
November 6, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29090685/a-randomized-double-blind-placebo-controlled-clinical-trial-of-tocilizumab-an-interleukin-6-receptor-antibody-for-residual-symptoms-in-schizophrenia
#10
Ragy R Girgis, Adam Ciarleglio, Tse Choo, Gregory Haynes, Joan M Bathon, Serge Cremers, Joshua T Kantrowitz, Jeffrey A Lieberman, Alan S Brown
Evidence from preclinical, epidemiological, and human studies indicates that inflammation, and in particular elevated IL-6 activity, may be related to clinical manifestations and pathophysiology of schizophrenia. Furthermore, studies in preclinical models suggest that decreasing IL-6 activity may mitigate or reverse some of these deficits. The purpose of this trial was to test whether an IL-6 receptor antibody, tocilizumab, would improve residual positive and negative symptoms and cognitive deficits in schizophrenia...
November 1, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29090684/neuroactive-steroids-and-affective-symptoms-in-women-across-the-weight-spectrum
#11
Laura E Dichtel, Elizabeth A Lawson, Melanie Schorr, Erinne Meenaghan, Margaret Lederfine Paskal, Kamryn T Eddy, Graziano Pinna, Marianela Nelson, Ann M Rasmusson, Anne Klibanski, Karen K Miller
3α-5α-Tetrahydroprogesterone, a progesterone metabolite also known as allopregnanolone, and 5α-androstane-3α,17β-diol, a testosterone metabolite also known as 3α-androstanediol, are neuroactive steroids and positive GABAA receptor allosteric modulators. Both anorexia nervosa (AN) and obesity are complicated by affective co-morbidities and hypothalamic-pituitary-gonadal dysregulation. However, it is not known whether neuroactive steroid levels are abnormal at the extremes of the weight spectrum. We hypothesized that serum allopregnanolone and 3α-androstanediol levels would be decreased in AN compared to healthy controls (HC) and negatively associated with affective symptoms throughout the weight spectrum, independent of body mass index (BMI)...
November 1, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29090683/oxytocin-reduces-alcohol-cue-reactivity-in-alcohol-dependent-rats-and-humans
#12
Anita C Hansson, Anne Koopmann, Stefanie Uhrig, Sina Bühler, Esi Domi, Eva Kiessling, Roberto Ciccocioppo, Robert C Froemke, Valery Grinevich, Falk Kiefer, Wolfgang H Sommer, Sabine Vollstädt-Klein, Rainer Spanagel
Approved pharmacological treatments for alcohol use disorder are limited in their effectiveness, and new drugs that can easily be translated into the clinic are warranted. One of those candidates is oxytocin because of its interaction with several alcohol-induced effects. Alcohol dependent rats as well as postmortem brains of human alcoholics and controls were analyzed for the expression of the oxytocin system by qRT-PCR, in situ hybridization, receptor autoradiography ([(125)I]-OVTA binding) and immunohistochemistry...
November 1, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29090682/a-novel-method-for-chronic-social-defeat-stress-in-female-mice
#13
Alexander Z Harris, Piray Atsak, Zachary H Bretton, Emma S Holt, Raisa Alam, Mitchell P Morton, Atheir I Abbas, E David Leonardo, Scott S Bolkan, René Hen, Joshua A Gordon
Historically, preclinical stress studies have often omitted female subjects, despite evidence that women have higher rates of anxiety and depression. In rodents, many stress susceptibility and resilience studies have focused on males since one commonly used paradigm-chronic social defeat stress-has proven challenging to implement in females. We report a new version of the social defeat paradigm that works in female mice. By applying male odorants to females in order to increase resident male aggressive behavior, we find that female mice undergo repeated social defeat stress and develop social avoidance, decreased sucrose preference and decreased time in the open arms of the elevated plus maze relative to control mice...
November 1, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29068002/engineered-d2r-variants-reveal-the-balanced-and-biased-contributions-of-g-protein-and-%C3%AE-arrestin-to-dopamine-dependent-functions
#14
Samuel J Rose, Thomas F Pack, Sean M Peterson, Kaitlin Payne, Emiliana Borrelli, Marc G Caron
The dopamine D2 receptor (D2R), like many G-protein coupled-receptors, signals through G-protein and β-arrestin-dependent pathways. Preferential activation of one of these pathways is termed functional selectivity or biased signaling and is a promising therapeutic strategy. Though biased signaling through D2Rs has been demonstrated, acquiring the mechanistic details of biased D2R/G-protein and D2R/β-arrestin signaling in vivo has been challenging due to the lack of techniques that specifically target these interactions in discrete cell populations...
October 25, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29052618/a-role-for-prefrontal-cortical-nmda-receptors-in-murine-alcohol-heightened-aggression
#15
Emily L Newman, Miho Terunuma, Tiffany Wang, Nishani Hewage, Matthew B Bicakci, Stephen J Moss, Joseph F DeBold, Klaus A Miczek
Alcohol is associated with nearly half of all violent crimes committed in the United States; yet, a potential neural basis for this type of pathological aggression remains elusive. Alcohol may act on NMDA receptors (NMDARs) within cortical circuits to impede processing and to promote aggression. Here, male mice were characterized as alcohol-heightened (AHAs) or alcohol non-heightened aggressors (ANAs) during resident-intruder confrontations after self-administering 1.0 g/kg alcohol (6% w/v) or water. Alcohol produced a pathological-like pattern of aggression in AHAs; these mice shifted their bites to more vulnerable locations on the body of a submissive animal, including the anterior back and ventrum after consuming alcohol...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29052617/adhd-smoking-withdrawal-and-inhibitory-control-results-of-a-neuroimaging-study-with-methylphenidate-challenge
#16
Maggie M Sweitzer, Scott H Kollins, Rachel V Kozink, Matt Hallyburton, Joseph English, Merideth A Addicott, Jason A Oliver, F Joseph McClernon
Smoking withdrawal negatively impacts inhibitory control, and these effects are greater for smokers with pre-existing attention problems, such as attention deficit/hyperactivity disorder (ADHD). The current study preliminarily evaluated changes in inhibitory control-related behavior and brain activation during smoking withdrawal among smokers with ADHD. Moreover, we investigated the role of catecholamine transmission in these changes by examining effects of 40 mg methylphenidate (MPH) administration. Adult daily smokers with (n=17) and without (n=20) ADHD completed fMRI scanning under each of three conditions: (a) smoking as usual+placebo; (b) 24 hr smoking abstinence+placebo and (c) 24 hr smoking abstinence+MPH...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29052616/pregenual-anterior-cingulate-dysfunction-associated-with-depression-in-ocd-an-integrated-multimodal-fmri-1-h-mrs-study
#17
Reza Tadayonnejad, Rangaprakash Deshpande, Olusola Ajilore, Teena Moody, Francesca Morfini, Ronald Ly, Joseph O'Neill, Jamie D Feusner
Depression is a commonly-occurring symptom in obsessive-compulsive disorder (OCD), and is associated with worse functional impairment, poorer quality of life, and poorer treatment response. Understanding the underlying neurochemical and connectivity-based brain mechanisms of this important symptom domain in OCD is necessary for development of novel, more globally effective treatments. To investigate biopsychological mechanisms of comorbid depression in OCD, we examined effective connectivity and neurochemical signatures in the pregenual anterior cingulate cortex (pACC), a structure known to be involved in both OCD and depression...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29052615/effects-of-alcohol-abuse-on-proliferating-cells-stem-progenitor-cells-and-immature-neurons-in-the-adult-human-hippocampus
#18
Tara Wardi Le Maître, Gopalakrishnan Dhanabalan, Nenad Bogdanovic, Kanar Alkass, Henrik Druid
In animal studies, impaired adult hippocampal neurogenesis is associated with behavioral pathologies including addiction to alcohol. We hypothesize that alcohol abuse may have a detrimental effect on the neurogenic pool of the dentate gyrus in the human hippocampus. In this study we investigate whether alcohol abuse affects the number of proliferating cells, stem/progenitor cells and immature neurons in samples from postmortem human hippocampus. The specimens were isolated from deceased donors with an on-going alcohol abuse, and from controls with no alcohol overconsumption...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29052614/narp-mediates-antidepressant-like-effects-of-electroconvulsive-seizures
#19
Andrew D Chang, Punit V Vaidya, Edward P Retzbach, Sunho J Chung, Urian Kim, Kathryn Baselice, Kristen Maynard, Alec Stepanian, Melissa Staley, Lan Xiao, Ashley Blouin, Sungho Han, JongAh Lee, Paul F Worley, Kellie L Tamashiro, Barbara L Hempstead, Keri Martinowich, Mary Ann Wilson, Jay M Baraban, Irving M Reti
Growing recognition of persistent cognitive defects associated with electroconvulsive therapy (ECT), a highly effective and commonly used antidepressant treatment, has spurred interest in identifying its mechanism of action to guide development of safer treatment options. However, as repeated seizure activity elicits a bewildering array of electrophysiological and biochemical effects, this goal has remained elusive. We have examined whether deletion of Narp, an immediate early gene induced by electroconvulsive seizures (ECS), blocks its antidepressant efficacy...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29052613/dynorphin-counteracts-orexin-in-the-paraventricular-nucleus-of-the-thalamus-cellular-and-behavioral-evidence
#20
Alessandra Matzeu, Marsida Kallupi, Olivier George, Paul Schweitzer, Rémi Martin-Fardon
The orexin (Orx) system plays a critical role in drug addiction and reward-related behaviors. The dynorphin (Dyn) system promotes depressive-like behavior and plays a key role in the aversive effects of stress. Orx and Dyn are co-released and have opposing functions in reward and motivation in the ventral tegmental area (VTA). Previous studies suggested that OrxA transmission in the posterior paraventricular nucleus of the thalamus (pPVT) participates in cocaine-seeking behavior. This study determined whether Orx and Dyn interact in the pPVT...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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