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Biological Psychiatry

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https://www.readbyqxmd.com/read/29146047/maternal-immune-activation-delays-excitatory-to-inhibitory-gamma-aminobutyric-acid-switch-in-offspring
#1
Irene Corradini, Elisa Focchi, Marco Rasile, Raffaella Morini, Genni Desiato, Romana Tomasoni, Michela Lizier, Elsa Ghirardini, Riccardo Fesce, Diego Morone, Isabella Barajon, Flavia Antonucci, Davide Pozzi, Michela Matteoli
BACKGROUND: The association between maternal infection and neurodevelopmental defects in progeny is well established, although the biological mechanisms and the pathogenic trajectories involved have not been defined. METHODS: Pregnant dams were injected intraperitoneally at gestational day 9 with polyinosinic:polycytidylic acid. Neuronal development was assessed by means of electrophysiological, optical, and biochemical analyses. RESULTS: Prenatal exposure to polyinosinic:polycytidylic acid causes an imbalanced expression of the Na(+)-K(+)-2Cl(-) cotransporter 1 and the K(+)-Cl(-) cotransporter 2 (KCC2)...
November 14, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29157845/face-perception-in-social-anxiety-visuocortical-dynamics-reveal-propensities-for-hypervigilance-or-avoidance
#2
Lisa M McTeague, Marie-Claude Laplante, Hailey W Bulls, Joshua R Shumen, Peter J Lang, Andreas Keil
BACKGROUND: Theories of aberrant attentional processing in social anxiety, and anxiety disorders more broadly, have postulated an initial hypervigilance or facilitation to clinically relevant threats and consequent defensive avoidance. However, existing objective measurements utilized to explore this phenomenon lack the resolution to elucidate attentional dynamics, particularly covert influences. METHODS: We utilized a continuous measure of visuocortical engagement, the steady-state visual evoked potential in response to naturalistic angry, fearful, happy, and neutral facial expressions...
October 13, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29132654/reply-to-it-is-time-to-look-for-new-treatments-for-posttraumatic-stress-disorder-can-sympathetic-system-modulation-be-an-answer
#3
LETTER
John H Krystal, Lori L Davis, Thomas C Neylan, Murray Raskind, Paula P Schnurr, Murray B Stein, Jennifer Vessicchio, Brian Shiner, Theresa C Gleason, Grant D Huang
No abstract text is available yet for this article.
October 12, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29132652/it-is-time-to-look-for-new-treatments-for-posttraumatic-stress-disorder-can-sympathetic-system-modulation-be-an-answer
#4
LETTER
Eugene Lipov, Andrea Tukan, Kenneth Candido
No abstract text is available yet for this article.
October 12, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29146048/cerebellar-volume-in-autism-literature-meta-analysis-and-analysis-of-the-autism-brain%C3%A2-imaging-data-exchange-cohort
#5
Nicolas Traut, Anita Beggiato, Thomas Bourgeron, Richard Delorme, Laure Rondi-Reig, Anne-Lise Paradis, Roberto Toro
BACKGROUND: The neuroanatomical bases of autism spectrum disorder remain largely unknown. Among the most widely discussed candidate endophenotypes, differences in cerebellar volume have been often reported as statistically significant. METHODS: We aimed at objectifying this possible alteration by performing a systematic meta-analysis of the literature and an analysis of the ABIDE (Autism Brain Imaging Data Exchange) cohort. Our meta-analysis sought to determine a combined effect size of autism spectrum disorder diagnosis on different measures of the cerebellar anatomy as well as the effect of possible factors of variability across studies...
October 10, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29132653/prefrontal-and-striatal-gamma-aminobutyric-acid%C3%A2-levels-and-the-effect-of-antipsychotic-treatment-in-first-episode-psychosis-patients
#6
Camilo de la Fuente-Sandoval, Francisco Reyes-Madrigal, Xiangling Mao, Pablo León-Ortiz, Oscar Rodríguez-Mayoral, Helgi Jung-Cook, Rodolfo Solís-Vivanco, Ariel Graff-Guerrero, Dikoma C Shungu
BACKGROUND: Abnormally elevated levels of gamma-aminobutyric acid (GABA) in the medial prefrontal cortex (mPFC) have been reported in antipsychotic-free patients with schizophrenia. Whether such GABA elevations are also present in other brain regions and persist after antipsychotic treatment has not been previously investigated. METHODS: Twenty-eight antipsychotic-naïve patients with first-episode psychosis (FEP) and 18 healthy control subjects completed the study...
October 10, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29100630/stress-promotes-drug-seeking-through-glucocorticoid-dependent-endocannabinoid-mobilization-in-the-prelimbic-cortex
#7
Jayme R McReynolds, Elizabeth M Doncheck, Yan Li, Oliver Vranjkovic, Evan N Graf, Daisuke Ogasawara, Benjamin F Cravatt, David A Baker, Qing-Song Liu, Cecilia J Hillard, John R Mantsch
BACKGROUND: Clinical reports suggest that rather than directly driving cocaine use, stress may create a biological context within which other triggers for drug use become more potent. We hypothesize that stress-induced increases in corticosterone "set the stage" for relapse by promoting endocannabinoid-induced attenuation of inhibitory transmission in the prelimbic cortex (PL). METHODS: We have established a rat model for these stage-setting effects of stress. In this model, neither a stressor (electric footshock) nor stress-level corticosterone treatment alone reinstates cocaine seeking following self-administration and extinction, but each treatment potentiates reinstatement in response to an otherwise subthreshold cocaine priming dose (2...
October 6, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29128043/transcriptome-alterations-in-posttraumatic-stress-disorder
#8
REVIEW
Matthew J Girgenti, Ronald S Duman
Posttraumatic stress disorder (PTSD) is a debilitating psychiatric disorder with a lifetime prevalence of nearly 8% in the general population. While the underlying molecular and cellular mechanisms of PTSD remain unknown, recent studies indicate that PTSD is associated with aberrant gene expression in brain as well as peripheral blood cells. The advent of next-generation sequencing technologies will allow us to elucidate the gene expression changes occurring in both brain and blood of patients with PTSD. RNA sequencing allows for analysis of the amount of transcript being made as well as alternative splicing, novel transcript identification, microRNA, and noncoding RNA quantification...
October 4, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29129319/modeling-the-interplay-between-neurons-and-astrocytes-in-autism-using-human-induced-pluripotent-stem-cells
#9
Fabiele Baldino Russo, Beatriz Camille Freitas, Graciela Conceição Pignatari, Isabella Rodrigues Fernandes, Jonathan Sebat, Alysson Renato Muotri, Patricia Cristina Baleeiro Beltrão-Braga
BACKGROUND: Autism spectrum disorder (ASD) is a neurodevelopmental disorder with unclear etiology and imprecise genetic causes. The main goal of this work was to investigate neuronal connectivity and the interplay between neurons and astrocytes from individuals with nonsyndromic ASD using induced pluripotent stem cells. METHODS: Induced pluripotent stem cells were derived from a clinically well-characterized cohort of three individuals with nonsyndromic ASD sharing common behaviors and three control subjects, two clones each...
October 3, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29113642/prefrontal-thalamic-anatomical-connectivity-and-executive-cognitive-function-in-schizophrenia
#10
Monica Giraldo-Chica, Baxter P Rogers, Stephen M Damon, Bennett A Landman, Neil D Woodward
BACKGROUND: Executive cognitive functions, including working memory, cognitive flexibility, and inhibition, are impaired in schizophrenia. Executive functions rely on coordinated information processing between the prefrontal cortex (PFC) and thalamus, particularly the mediodorsal nucleus. This raises the possibility that anatomical connectivity between the PFC and mediodorsal thalamus may be 1) reduced in schizophrenia and 2) related to deficits in executive function. The current investigation tested these hypotheses...
September 28, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29100628/developmental-changes-within-the-genetic-architecture-of-social-communication-behavior-a-multivariate-study-of-genetic-variance-in-unrelated-individuals
#11
Beate St Pourcain, Lindon J Eaves, Susan M Ring, Simon E Fisher, Sarah Medland, David M Evans, George Davey Smith
BACKGROUND: Recent analyses of trait-disorder overlap suggest that psychiatric dimensions may relate to distinct sets of genes that exert maximum influence during different periods of development. This includes analyses of social communication difficulties that share, depending on their developmental stage, stronger genetic links with either autism spectrum disorder or schizophrenia. We developed a multivariate analysis framework in unrelated individuals to model directly the developmental profile of genetic influences contributing to complex traits, such as social communication difficulties, during an approximately 10-year period spanning childhood and adolescence...
September 28, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29050637/bipolar-disorder-as-a-mitochondrial-disease
#12
Ana C Andreazza, Angela Duong, L Trevor Young
No abstract text is available yet for this article.
September 28, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29100631/drug-cues-conditioned-reinforcement-and-drug-seeking-the-sequelae-of-a-collaborative-venture-with-athina-markou
#13
REVIEW
Barry J Everitt
Athina Markou spent a research period in my laboratory, then in the Department of Anatomy in Cambridge University, in 1991 to help us establish a cocaine-seeking procedure. Thus we embarked on developing a second-order schedule of intravenous cocaine reinforcement to investigate the neural basis of the pronounced effects of cocaine-associated conditioned stimuli on cocaine seeking. This brief review summarizes the fundamental aspects of cocaine seeking measured using this approach and the importance of the methodology in enabling us to define the neural mechanisms and circuitry underlying conditioned reinforcement and cocaine, heroin, and alcohol seeking...
September 25, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29150182/mature-hippocampal-neurons-require-lis1-for-synaptic-integrity-implications-for-cognition
#14
Anamaria Sudarov, Xin-Jun Zhang, Leighton Braunstein, Eve LoCastro, Shawn Singh, Yu Taniguchi, Ashish Raj, Song-Hai Shi, Holly Moore, M Elizabeth Ross
BACKGROUND: Platelet-activating factor acetylhydrolase 1B1 (LIS1), a critical mediator of neuronal migration in developing brain, is expressed throughout life. However, relatively little is known about LIS1 function in the mature brain. We previously demonstrated that LIS1 involvement in the formation and turnover of synaptic protrusions and synapses of young brain after neuronal migration is complete. Here we examine the requirement for LIS1 to maintain hippocampal circuit function in adulthood...
September 23, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29129318/does-childhood-trauma-moderate-polygenic-risk-for-depression-a-meta-analysis-of-5765-subjects-from-the-psychiatric-genomics-consortium
#15
Wouter J Peyrot, Sandra Van der Auwera, Yuri Milaneschi, Conor V Dolan, Pamela A F Madden, Patrick F Sullivan, Jana Strohmaier, Stephan Ripke, Marcella Rietschel, Michel G Nivard, Niamh Mullins, Grant W Montgomery, Anjali K Henders, Andrew C Heat, Helen L Fisher, Erin C Dunn, Enda M Byrne, Tracy A Air, Bernhard T Baune, Gerome Breen, Douglas F Levinson, Cathryn M Lewis, Nick G Martin, Elliot N Nelson, Dorret I Boomsma, Hans J Grabe, Naomi R Wray, Brenda W J H Penninx
BACKGROUND: The heterogeneity of genetic effects on major depressive disorder (MDD) may be partly attributable to moderation of genetic effects by environment, such as exposure to childhood trauma (CT). Indeed, previous findings in two independent cohorts showed evidence for interaction between polygenic risk scores (PRSs) and CT, albeit in opposing directions. This study aims to meta-analyze MDD-PRS × CT interaction results across these two and other cohorts, while applying more accurate PRSs based on a larger discovery sample...
September 21, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29102411/what-can-mitochondrial-dna-analysis-tell-us-about-mood-disorders
#16
REVIEW
Takaoki Kasahara, Tadafumi Kato
Variants in mitochondrial DNA (mtDNA) and nuclear genes encoding mitochondrial proteins in bipolar disorder, depression, or other psychiatric disorders have been studied for decades, since mitochondrial dysfunction was first suggested in the brains of patients with these diseases. Candidate gene association studies initially resulted in findings compatible with the mitochondrial dysfunction hypothesis. Many of those studies, however, were conducted with modest sample sizes (N < 1000), which could cause false positive findings...
September 21, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29100626/heritable-variation-with-little-or-no-maternal-effect-accounts-for-recurrence-risk-to-autism-spectrum-disorder-in-sweden
#17
Benjamin Hon Kei Yip, Dan Bai, Behrang Mahjani, Lambertus Klei, Yudi Pawitan, Christina M Hultman, Dorothy E Grice, Kathryn Roeder, Joseph D Buxbaum, Bernie Devlin, Abraham Reichenberg, Sven Sandin
BACKGROUND: Autism spectrum disorder (ASD) has both genetic and environmental origins, including potentially maternal effects. Maternal effects describe association of one or more maternal phenotypes with liability to ASD in progeny that are independent of maternally transmitted risk alleles. While maternal effects could play an important role, consistent with association to maternal traits such as immune status, no study has estimated maternal, additive genetic, and environmental effects in ASD...
September 21, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29110899/the-role-of-the-hippocampus-in-predicting-future-posttraumatic-stress-disorder-symptoms-in-recently-traumatized-civilians
#18
Sanne J H van Rooij, Jennifer S Stevens, Timothy D Ely, Rebecca Hinrichs, Vasiliki Michopoulos, Sterling J Winters, Yvonne E Ogbonmwan, Jaemin Shin, Nicole R Nugent, Lauren A Hudak, Barbara O Rothbaum, Kerry J Ressler, Tanja Jovanovic
BACKGROUND: Understanding the neurobiological mechanisms that predict posttraumatic stress disorder (PTSD) in recent trauma survivors is important for early interventions. Impaired inhibition of fear or behavioral responses is thought to be central to PTSD symptomatology, but its role in predicting PTSD is unknown. Here we examine whether brain function during response inhibition early after a civilian trauma can predict future PTSD symptoms. METHODS: Participants (original sample, n = 27; replication sample, n = 31) were recruited in the emergency department within 24 hours of trauma exposure...
September 20, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29100629/metabotropic-glutamatergic-receptor-5-and-stress-disorders-knowledge-gained-from-receptor-imaging-studies
#19
REVIEW
Irina Esterlis, Sophie E Holmes, Priya Sharma, John H Krystal, Christine DeLorenzo
The metabotropic glutamatergic receptor subtype 5 (mGluR5) may represent a promising therapeutic target for stress-related psychiatric disorders. Here, we describe mGluR5 findings in stress disorders, particularly major depressive disorder (MDD), highlighting insights from positron emission tomography studies. Positron emission tomography studies report either no differences or lower mGluR5 in MDD, potentially reflecting MDD heterogeneity. Unlike the rapidly acting glutamatergic agent ketamine, mGluR5-specific modulation has not yet shown antidepressant efficacy in MDD and bipolar disorder...
September 19, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29066224/oxytocin-receptors-in-the-anteromedial-bed-nucleus-of-the-stria-terminalis-promote-stress-induced-social-avoidance-in-female-california-mice
#20
Natalia Duque-Wilckens, Michael Q Steinman, Marta Busnelli, Bice Chini, Sae Yokoyama, Mary Pham, Sarah A Laredo, Rebecca Hao, Allison M Perkeybile, Vanessa A Minie, Phillip B Tan, Karen L Bales, Brian C Trainor
BACKGROUND: The neuropeptide oxytocin (OT) is a key regulator of social and emotional behaviors. The effects of OT are context dependent, and it has been proposed that OT increases the salience of both positive and negative social cues. Here we tested whether the bed nucleus of the stria terminalis (BNST) mediates anxiogenic effects of OT. METHODS: First, we studied the effects of systemic administration of an OT receptor (OTR) antagonist L-368,899 on social behavior in male and female California mice exposed to social defeat...
September 14, 2017: Biological Psychiatry
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