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Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology

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https://www.readbyqxmd.com/read/28436446/opioid-self-administration-is-attenuated-by-early-life-experience-and-gene-therapy-for-anti-inflammatory-il-10-in-the-nucleus-accumbens-of-male-rats
#1
Michael J Lacagnina, Ashley M Kopec, Stewart S Cox, Richa Hanamsagar, Corinne Wells, Susan Slade, Peter M Grace, Linda R Watkins, Edward D Levin, Staci D Bilbo
Early-life conditions can contribute to the propensity for developing neuropsychiatric disease, including substance abuse disorders. However, the long-lasting mechanisms that shape risk or resilience for drug addiction remain unclear. Previous work has shown that a neonatal handling procedure in rats (which promotes enriched maternal care) attenuates morphine conditioning, reduces morphine-induced glial activation, and increases microglial expression of the anti-inflammatory cytokine interleukin-10 (IL-10)...
April 24, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28436445/cortical-thickness-and-subcortical-gray-matter-volume-in-pediatric-anxiety-disorders
#2
Andrea L Gold, Elizabeth R Steuber, Lauren K White, Jennifer Pacheco, Jessica F Sachs, David Pagliaccio, Erin Berman, Ellen Leibenluft, Daniel S Pine
Perturbations in the prefrontal cortex (PFC), hippocampus, and amygdala are implicated in the development of anxiety disorders. However, most structural neuroimaging studies of patients with anxiety disorders utilize adult samples, and the few studies in youths examine small samples, primarily with volume-based measures. This study tested the hypothesis that cortical thickness of PFC regions and gray matter volume of the hippocampus and amygdala differ between pediatric anxiety disorder patients and healthy volunteers (HVs)...
April 24, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28425497/single-dose-memantine-improves-cortical-oscillatory-response-dynamics-in-patients-with-schizophrenia
#3
Gregory A Light, Wen Zhang, Yash B Joshi, Savita Bhakta, Jo A Talledo, Neal R Swerdlow
Aberrant gamma band (30-80 Hz) oscillations may underlie cognitive deficits in schizophrenia (SZ). Gamma oscillations and their regulation by NMDA receptors can be studied via their evoked power (γEP) and phase locking (γPL) in response to auditory steady state stimulation; these Auditory Steady State Responses (ASSRs) may be biomarkers for target engagement and early therapeutic effects. We previously reported that memantine, an NMDA receptor antagonist, enhanced 2 biomarkers of early auditory information processing: prepulse inhibition (PPI) and mismatch negativity (MMN) in SZ patients and healthy subjects (HS)...
April 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28425496/3-4-methylenedioxymethamphetamine-increases-affiliative-behaviors-in-squirrel-monkeys-in-a-serotonin-2a-receptor-dependent-manner
#4
Elizabeth G Pitts, Adelaide R Minerva, Erika B Oliver, Jordan N Kohn, Meghan T Logun, Agnieszka Sulima, Kenner C Rice, Leonard L Howell
3,4-methylenedioxymethamphetamine (MDMA) increases sociality in humans and animals. Release of serotonin (5-HT) is thought to play an important role in the increase in social behaviors, but the mechanisms underlying these effects are poorly understood. Despite the advantages of nonhuman primate models, no studies have examined the mechanisms of the social effects of MDMA in nonhuman primates. The behavior and vocalizations of four group-housed squirrel monkeys were examined following administration of MDMA, its enantiomers, and methamphetamine...
April 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28425495/the-biglen-gpr171-peptide-receptor-system-within-the-basolateral-amygdala-regulates-anxiety-like-behavior-and-contextual-fear-conditioning
#5
Erin N Bobeck, Ivone Gomes, Darlene Pena, Kirstie A Cummings, Roger L Clem, Mihaly Mezei, Lakshmi A Devi
Studies show that neuropeptide-receptor systems in the basolateral amygdala (BLA) play an important role in the pathology of anxiety and other mood disorders. Since GPR171, a recently deorphanized receptor for the abundant neuropeptide BigLEN, is expressed in the BLA, we investigated its role in fear and anxiety-like behaviors. To carry out these studies we identified small molecule ligands using a homology model of GPR171 to virtually screen a library of compounds. One of the hits, MS0021570_1, was identified as a GPR171 antagonist based on its ability to block (i) BigLEN-mediated activation of GPR171 in heterologous cells, (ii) BigLEN-mediated hyperpolarization of BLA pyramidal neurons, and (iii) feeding induced by DREADD-mediated activation of BigLEN containing AgRP neurons in the arcuate nucleus...
April 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28409566/combined-effects-of-glucocorticoid-and-noradrenergic-activity-on-loss-aversion
#6
Zsofia Margittai, Gideon Nave, Marijn Van Wingerden, Alfons Schnitzler, Lars Schwabe, Tobias Kalenscher
Loss aversion is a well-known behavioral regularity in financial decision-making, describing humans' tendency to overweigh losses compared to gains of the same amount. Recent research indicates that stress and associated hormonal changes affect loss aversion, yet the underlying neuroendocrine mechanisms are still poorly understood. Here, we investigated the causal influence of two major stress neuromodulators, cortisol and noradrenaline, on loss aversion during financial decision-making. In a double-blind, placebo-controlled between subject design, we orally administered either the α2-adrenergic antagonist yohimbine (increasing noradrenergic stimulation), hydrocortisone, both substances, or a placebo to healthy young men...
April 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28409565/can-pornography-be-addictive-an-fmri-study-of-men-seeking-treatment-for-problematic-pornography-use
#7
Mateusz Gola, Małgorzata Wordecha, Guillaume Sescousse, Michał Lew-Starowicz, Bartosz Kossowski, Marek Wypych, Scott Makeig, Marc N Potenza, Artur Marchewka
Pornography consumption is highly prevalent, particularly among young adult males. For some individuals, problematic pornography use (PPU) is a reason for seeking treatment. Despite the pervasiveness of pornography, PPU appears under-investigated, including with respect to the underlying neural mechanisms. Using functional magnetic resonance imaging (fMRI), we examined ventral striatal responses to erotic and monetary stimuli, disentangling cue-related 'wanting' from reward-related 'liking' among 28 heterosexual males seeking treatment for PPU and 24 heterosexual males without PPU...
April 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28409564/predictors-of-naltrexone-response-in-a-randomized-trial-reward-related-brain-activation-oprm1-genotype-and-smoking-status
#8
Joseph P Schacht, Patrick K Randall, Patricia K Latham, Konstantin E Voronin, Sarah W Book, Hugh Myrick, Raymond F Anton
Naltrexone reduces drinking among individuals with alcohol use disorders (AUDs), but is not effective for everyone. Variability in its effects on reward-related brain activation, genetic variation, and/or cigarette smoking may account for this mixed response profile. This randomized clinical trial tested naltrexone's effects on drinking and alcohol cue-elicited brain activation, evaluated whether OPRM1 A118G genotype or smoking moderated these effects, and explored whether medication effects on cue-elicited activation predicted subsequent drinking...
April 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28409563/glutamate-in-pediatric-obsessive-compulsive-disorder-and-response-to-cognitive-behavioral-therapy-randomized-clinical-trial
#9
Joseph O'Neill, John Piacentini, Susanna Chang, Ronald Ly, Tsz M Lai, Casey C Armstrong, Lindsey Bergman, Michelle Rozenman, Tara Peris, Allison Vreeland, Ross Mudgway, Jennifer G Levitt, Noriko Salamon, Stefan Posse, Gerhard S Hellemann, Jeffry R Alger, James T McCracken, Erika L Nurmi
Cognitive-behavioral therapy (CBT) is effective for pediatric obsessive-compulsive disorder (OCD), but non-response is common. Brain glutamate (Glu) signaling may contribute to OCD pathophysiology and moderate CBT outcomes. We assessed whether Glu measured with magnetic resonance spectroscopy (MRS) was associated with OCD and/or CBT response. Youths aged 8-17 with DSM-IV OCD and typically-developing controls underwent 3T proton echo-planar spectroscopic imaging (PEPSI) MRS scans of pregenual anterior cingulate cortex (pACC) and ventral posterior cingulate cortex (vPCC)-regions possibly affected by OCD-at baseline...
April 14, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28401925/menthol-enhances-nicotine-reward-related-behavior-by-potentiating-nicotine-induced-changes-in-nachr-function-nachr-upregulation-and-da-neuron-excitability
#10
Brandon J Henderson, Teagan R Wall, Beverley M Henley, Charlene H Kim, Sheri McKinney, Henry A Lester
Understanding why the quit rate among smokers of menthol cigarettes is lower than non-menthol smokers requires identifying the neurons that are altered by nicotine, menthol, and acetylcholine. Dopaminergic (DA) neurons in the ventral tegmental area (VTA) mediate the positive reinforcing effects of nicotine. Using mouse models, we show that menthol enhances nicotine-induced changes in nicotinic acetylcholine receptors (nAChRs) expressed on midbrain DA neurons. Menthol plus nicotine upregulates nAChR number and function on midbrain DA neurons more than nicotine alone...
April 12, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28401924/the-human-coparental-bond-implicates-distinct-corticostriatal-pathways-longitudinal-impact-on-family-formation-and-child-well-being
#11
Eyal Abraham, Gadi Gilam, Yaniv Kanat-Maymon, Yael Jacob, Orna Zagoory-Sharon, Talma Hendler, Ruth Feldman
Alloparental care, the cooperative care of offspring by group members other than the biological mother, has been widely practiced since early hominin evolution to increase infant survival and thriving. The coparental bond-a relationship of solidarity and commitment between two adults who join their effort to care for children- is a central contributor to children's well-being and sociality; yet, the neural basis of coparenting has not been studied in humans. Here, we followed 84 first-time co-parents (42 couples) across the first six years of family formation, including opposite-sex and same-sex couples, measured brain response to coparental stimuli, observed collaborative and undermining coparental behaviors in infancy and preschool, assayed oxytocin (OT) and vasopressin (AVP), and measured coparenting and child behavior problems at six years...
April 12, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28397798/telomere-length-in-newborns-is-related-to-maternal-stress-during-pregnancy
#12
T Send, M Gilles, V Codd, I A C Wolf, S Bardtke, F Streit, J Strohmaier, J Frank, D Schendel, M W Sütterlin, M Denniff, M Laucht, N J Samani, M Deuschle, M Rietschel, S H Witt
Telomere length (TL) is a marker of biological aging, and numerous studies have shown associations between TL and somatic or psychiatric disorders. Research also indicates an association between maternal stress during pregnancy and TL in the offspring. The present study investigated possible associations between TL and: (1) maternal perceived stress during pregnancy; (2) a maternal life-time history of psychiatric disorder (life-time PD); and (3) paternal age. TL was analysed in 319 newborns and 318 mothers from a predominantly Caucasian sample (n=273 Caucasian newborns and n=274 Causasian mothers)...
April 11, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28393896/effects-of-ibudilast-on-the-subjective-reinforcing-and-analgesic-effects-of-oxycodone-in-recently-detoxified-adults-with-opioid-dependence
#13
Verena E Metz, Jermaine D Jones, Jeanne Manubay, Maria Sullivan, Shanthi Mogali, Andrew Segoshi, Gabriela Madera, Kirk W Johnson, Sandra D Comer
Ibudilast, a non-selective phosphodiesterase inhibitor, is used clinically in Asia for the treatment of asthma and post-stroke dizziness. Recent preclinical studies have suggested that it also inhibits glial cell activation in rodents, and may alter opioid-mediated effects, including analgesia and withdrawal symptoms. The effects of ibudilast on the abuse potential of opioids in humans are largely unknown. The present study was designed to examine the influence of ibudilast on subjective (including drug craving), reinforcing, and analgesic effects of oxycodone in human volunteers diagnosed with opioid dependence (equivalent to moderate-severe opioid use disorder)...
April 10, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28393895/sex-differences-in-regional-brain-glucose-metabolism-following-opioid-withdrawal-and-replacement
#14
Giovanni C Santoro, Joseph Carrion, Krishna Patel, Crystal Vilchez, Jennifer Veith, Jonathan D Brodie, Stephen L Dewey
Methadone and buprenorphine are currently the most common pharmacological treatments for opioid dependence. Interestingly, the clinical response to these drugs appears to be sex-specific. That is, females exhibit superior therapeutic efficacy, defined as extended periods of abstinence and longer time to relapse, compared to males. However, the underlying metabolic effects of opioid withdrawal and replacement have not been examined. Therefore, using (18)FDG and microPET, we measured differences in regional brain glucose metabolism in males and females following morphine withdrawal and subsequent methadone or buprenorphine replacement...
April 10, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28387223/ethanol-withdrawal-drives-anxiety-related-behaviors-by-reducing-m-type-potassium-channel-activity-in-the-lateral-habenula
#15
Seungwoo Kang, Jing Li, Wanhong Zuo, Rao Fu, Danielle Gregor, Kresimir Krnjevic, Alex Bekker, Jiang-Hong Ye
Alcohol use disorders (AUDs) and anxiety disorders (ADs) are often seen concurrently, but their underlying cellular basis is unclear. For unclear reasons, the lateral habenula (LHb), a key brain region involved in the pathophysiology of ADs, becomes hyperactive after ethanol withdrawal. M-type K(+) channels (M-channels), important regulators of neuronal activity, are abundant in the LHb, yet little is known about their role in AUDs and associated ADs. We report here that in rats at 24 h withdrawal from systemic ethanol administration (either by intraperitoneal injection, 2 g/kg, twice/day, for 7 days; or intermittent drinking 20% ethanol in a two-bottle free choice protocol for 8 weeks), the basal firing rate and the excitability of LHb neurons in brain slices was higher, whereas the amplitude of medium afterhyperpolarization and M-type K(+) currents were smaller, when compared to ethanol naïve rats...
April 7, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28387222/presynaptic-dopamine-synthesis-capacity-in-schizophrenia-and-striatal-blood-flow-change-during-antipsychotic-treatment-and-medication-free-conditions
#16
Daniel Paul Eisenberg, Lisa Yankowitz, Angela M Ianni, Dani Y Rubinstein, Philip D Kohn, Catherine E Hegarty, Michael D Gregory, José A Apud, Karen F Berman
Standard-of-care biological treatment of schizophrenia remains dependent upon antipsychotic medications, which demonstrate D2 receptor affinity and elicit variable, partial clinical responses via neural mechanisms that are not entirely understood. In the striatum, where D2 receptors are abundant, antipsychotic medications may affect neural function in studies of animals, healthy volunteers and patients, yet the relevance of this to pharmacotherapeutic actions remain unresolved. In this same brain region, some individuals with schizophrenia may demonstrate phenotypes consistent with exaggerated dopaminergic signaling, including alterations in dopamine synthesis capacity; however, the hypothesis that dopamine system characteristics underlie variance in medication-induced regional blood flow changes has not been directly tested...
April 7, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28294137/relationship-between-duration-of-untreated-psychosis-and-intrinsic-corticostriatal-connectivity-in-patients-with-early-phase-schizophrenia
#17
Deepak K Sarpal, Delbert G Robinson, Christina Fales, Todd Lencz, Miklos Argyelan, Katherine H Karlsgodt, Juan A Gallego, Majnu John, John M Kane, Philip R Szeszko, Anil K Malhotra
Patients with first-episode psychosis experience psychotic symptoms for a mean of up to 2 years prior to initiation of treatment, and long duration of untreated psychosis (DUP) is associated with poor clinical outcomes. Meanwhile, evidence compiled from numerous studies suggests that longer DUP is not associated with structural brain abnormalities. To date, few studies have examined the relationship between DUP and functional neuroimaging measures. In the present study, we used seed-based resting-state functional connectivity to examine the impact of DUP on corticostriatal circuitry...
April 5, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28361870/associations-between-daily-affective-instability-and-connectomics-in-functional-subnetworks-in-remitted-patients-with-recurrent-major-depressive-disorder
#18
Michelle N Servaas, Harriëtte Riese, Remco J Renken, Marieke Wichers, Jojanneke A Bastiaansen, Caroline A Figueroa, Hanneke Geugies, Roel Jt Mocking, Linda Geerligs, Jan-BernardC Marsman, André Aleman, Aart H Schene, Robert A Schoevers, Henricus G Ruhé
Remitted patients with major depressive disorder (rMDD) often report more fluctuations in mood as residual symptomatology. It is unclear how this affective instability is associated with information processing related to the default mode (DMS), salience/reward (SRS) and fronto-parietal (FPS) subnetworks in rMDD patients at high risk of recurrence (rrMDD). Sixty-two unipolar, drug-free rrMDD patients (⩾2 MDD-episodes) and 41 HC (HC) were recruited. We used Experience Sampling Methodology (ESM) to monitor mood/cognitions (10 times a day for 6 days) and calculated affective instability using the mean adjusted absolute successive difference...
March 31, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28361869/strained-in-planning-your-mouse-background-using-the-hpa-stress-axis-as-a-biological-readout-for-backcrossing-strategies
#19
Jennifer C Chan, Amanda Houghton, Tracy L Bale
Neuropsychopharmacology accepted article preview online, 31 March 2017. doi:10.1038/npp.2017.66.
March 31, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28272497/the-nucleus-accumbens-and-ketamine-treatment-in-major-depressive-disorder
#20
Chadi G Abdallah, Andrea Jackowski, Ramiro Salas, Swapnil Gupta, João R Sato, Xiangling Mao, Jeremy D Coplan, Dikoma C Shungu, Sanjay J Mathew
Animal models of depression repeatedly showed stress-induced nucleus accumbens (NAc) hypertrophy. Recently, ketamine was found to normalize this stress-induced NAc structural growth. Here, we investigated NAc structural abnormalities in major depressive disorder (MDD) in two cohorts. Cohort A included a cross-sectional sample of 34 MDD and 26 healthy control (HC) subjects, with high-resolution magnetic resonance imaging (MRI) to estimate NAc volumes. Proton MR spectroscopy ((1)H MRS) was used to divide MDD subjects into two subgroups: glutamate-based depression (GBD) and non-GBD...
March 29, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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