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https://www.readbyqxmd.com/read/28343281/using-patterns-of-genetic-association-to-elucidate-shared-genetic-etiologies-across-psychiatric-disorders
#1
Seung Bin Cho, Fazil Aliev, Shaunna L Clark, Amy E Adkins, Howard J Edenberg, Kathleen K Bucholz, Bernice Porjesz, Danielle M Dick
Twin studies indicate that latent genetic factors overlap across comorbid psychiatric disorders. In this study, we used a novel approach to elucidate shared genetic factors across psychiatric outcomes by clustering single nucleotide polymorphisms based on their genome-wide association patterns. We applied latent profile analysis (LPA) to p-values resulting from genome-wide association studies across three phenotypes: symptom counts of alcohol dependence (AD), antisocial personality disorder (ASP), and major depression (MD), using the European-American case-control genome-wide association study subsample of the collaborative study on the genetics of alcoholism (N = 1399)...
March 25, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28336492/looking-into-the-brain-through-the-retinal-ganglion-cells-in-psychiatric-disorders-a-review-of-evidences
#2
REVIEW
Thomas Schwitzer, Raymund Schwan, Emanuel Bubl, Laurence Lalanne, Karine Angioi-Duprez, Vincent Laprevote
Psychiatry and neuroscience research need novel approaches to indirectly investigate brain function. As the retina is an anatomical and developmental extension of the central nervous system (CNS), changes in retinal function may reflect neurological dysfunctions in psychiatric disorders. The last and most integrated retinal relay before visual information transfer to the brain is the ganglion cell layer. Here, based on collected arguments, we argue that these cells offer a crucial site for indirectly investigating brain function...
March 20, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28335658/dopamine-antagonists-for-treatment-resistance-in-autism-spectrum-disorders-review-and-focus-on-bdnf-stimulators-loxapine-and-amitriptyline
#3
Jessica A Hellings, L Eugene Arnold, Joan Han
Drug development is urgently needed for individuals with autism spectrum disorders (ASD) and psychiatric comorbidity, which often presents as aggression and self-injury. At the same time, most psychiatric medications are drugs that have been repurposed following clinical observations of efficacy for a new treatment purpose. Areas Covered: This review aims to provide an overview of dopamine antagonists, including classical and atypical, as well as unconventional antipsychotics in ASD, since they are a mainstay of treatment for such problems...
March 24, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28330876/electrocorticographic-dynamics-as-a-novel-biomarker-in-five-models-of-epileptogenesis
#4
Dan Z Milikovsky, Itai Weissberg, Lyna Solomon-Kamintsky, Kristina Lippmann, Osnat Schefenbauer, Federica Frigerio, Massimo Rizzi, Liron Sheintuch, Daniel Zelig, Jonathan Ofer, Annamaria Vezzani, Alon Friedman
Post injury epilepsy (PIE) is a devastating sequela of various brain insults. While recent studies offer novel insights into the mechanisms underlying epileptogenesis and discover potential preventive treatments, the lack of PIE biomarkers hinders the clinical implementation of such treatments. Here we explored the biomarker potential of different electrographic features in five models of PIE. Electrocorticographic or intrahippocampal recordings of epileptogenesis (from the insult to the first spontaneous seizure) from two laboratories were analyzed in 3 mouse and 2 rat PIE models...
March 22, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28324704/bxd-recombinant-inbred-strains-participate-in-social-preference-anxiety-and-depression-behaviors-along-sex-differences-in-cytokines-and-tactile-allodynia
#5
Caridad López-Granero, Alessandra Antunes Dos Santos, Beatriz Ferrer, Megan Culbreth, Sudipta Chakraborty, Angel Barrasa, Maria Gulinello, Aaron B Bowman, Michael Aschner
Depression and anxiety are the most common psychiatric disorders, representing a major public health concern. Dysregulation of oxidative and inflammatory systems may be associated with psychiatric disorders, such as depression and anxiety. Due to the need to find appropriate animal models to the understanding of such disorders, we queried whether 2 BXD recombinant inbred (RI) mice strains (BXD21/TyJ RI and BXD84/RwwJ RI mice) and C57BL/6 wild-type mice show differential performance in depression and anxiety related behaviors and biomarkers...
March 6, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28323287/experimental-medication-treatment-approaches-for-depression
#6
REVIEW
D F Ionescu, G I Papakostas
Depression is one of the most common psychiatric conditions. Symptoms can lead to significant disability, which result in impairments in overall quality of life. Though there are many approved antidepressant treatments for depression-including selective serotonin reuptake inhibitors, tricyclic antidepressants and monoamine oxidase inhibitors-about a third of patients do not respond to these medications. Therefore, it is imperative for drug discovery to continue towards the development of novel and rapidly acting compounds, especially for patients with treatment-resistant depression...
March 21, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28323201/the-recency-ratio-is-associated-with-reduced-csf-glutamate-in-late-life-depression
#7
Davide Bruno, Jay Nierenberg, Thomas B Cooper, Charles R Marmar, Henrik Zetterberg, Kaj Blennow, Kenji Hashimoto, Nunzio Pomara
Glutamate is the principal excitatory neurotransmitter in the central nervous system, and is thought to be involved in the process of memory encoding and storage. Glutamate disturbances have also been reported in psychiatric disorders, such as schizophrenia and major depressive disorder (MDD), and in Alzheimer's disease. In this paper, we set out to study the relationship between cerebrospinal fluid (CSF) glutamate levels and memory performance, which we believe has not been reported previously. In particular, we focused on recall performance broken down by serial position...
March 18, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28322274/a-rare-missense-variant-in-rcl1-segregates-with-depression-in-extended-families
#8
N Amin, F M S de Vrij, M Baghdadi, R W W Brouwer, J G J van Rooij, O Jovanova, A G Uitterlinden, A Hofman, H L A Janssen, S Darwish Murad, R Kraaij, J Stedehouder, M C G N van den Hout, J M Kros, W F J van IJcken, H Tiemeier, S A Kushner, C M van Duijn
Depression is the most prevalent psychiatric disorder with a complex and elusive etiology that is moderately heritable. Identification of genes would greatly facilitate the elucidation of the biological mechanisms underlying depression, however, its complex etiology has proved to be a major bottleneck in the identification of its genetic risk factors, especially in genome-wide association-like studies. In this study, we exploit the properties of a genetic isolate and its family-based structure to explore whether relatively rare exonic variants influence the burden of depressive symptoms in families...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28322273/neuregulin-2-ablation-results-in-dopamine-dysregulation-and-severe-behavioral-phenotypes-relevant-to-psychiatric-disorders
#9
L Yan, A Shamir, M Skirzewski, E Leiva-Salcedo, O B Kwon, I Karavanova, D Paredes, O Malkesman, K R Bailey, D Vullhorst, J N Crawley, A Buonanno
Numerous genetic and functional studies implicate variants of Neuregulin-1 (NRG1) and its neuronal receptor ErbB4 in schizophrenia and many of its endophenotypes. Although the neurophysiological and behavioral phenotypes of NRG1 mutant mice have been investigated extensively, practically nothing is known about the function of NRG2, the closest NRG1 homolog. We found that NRG2 expression in the adult rodent brain does not overlap with NRG1 and is more extensive than originally reported, including expression in the striatum and medial prefrontal cortex (mPFC), and therefore generated NRG2 knockout mice (KO) to study its function...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28322246/genetic-correlation-between-amyotrophic-lateral-sclerosis-and-schizophrenia
#10
Russell L McLaughlin, Dick Schijven, Wouter van Rheenen, Kristel R van Eijk, Margaret O'Brien, René S Kahn, Roel A Ophoff, An Goris, Daniel G Bradley, Ammar Al-Chalabi, Leonard H van den Berg, Jurjen J Luykx, Orla Hardiman, Jan H Veldink
We have previously shown higher-than-expected rates of schizophrenia in relatives of patients with amyotrophic lateral sclerosis (ALS), suggesting an aetiological relationship between the diseases. Here, we investigate the genetic relationship between ALS and schizophrenia using genome-wide association study data from over 100,000 unique individuals. Using linkage disequilibrium score regression, we estimate the genetic correlation between ALS and schizophrenia to be 14.3% (7.05-21.6; P=1 × 10(-4)) with schizophrenia polygenic risk scores explaining up to 0...
March 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28320223/kinect-3-a-phase-3-randomized-double-blind-placebo-controlled-trial-of-valbenazine-for-tardive-dyskinesia
#11
Robert A Hauser, Stewart A Factor, Stephen R Marder, Mary Ann Knesevich, Paul M Ramirez, Roland Jimenez, Joshua Burke, Grace S Liang, Christopher F O'Brien
OBJECTIVE: Tardive dyskinesia is a persistent movement disorder induced by dopamine receptor blockers, including antipsychotics. Valbenazine (NBI-98854) is a novel, highly selective vesicular monoamine transporter 2 inhibitor that demonstrated favorable efficacy and tolerability in the treatment of tardive dyskinesia in phase 2 studies. This phase 3 study further evaluated the efficacy, safety, and tolerability of valbenazine as a treatment for tardive dyskinesia. METHOD: This 6-week, randomized, double-blind, placebo-controlled trial included patients with schizophrenia, schizoaffective disorder, or a mood disorder who had moderate or severe tardive dyskinesia...
March 21, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28319789/group-schema-therapy-for-personality-disorders-a-pilot-study-for-implementation-in-acute-psychiatric-in-patient-settings
#12
Igor Nenadić, Sina Lamberth, Neele Reiss
Group schema therapy (GST) has been proposed as a novel long-term treatment programme for borderline and cluster C personality disorders. We implemented a short-term GST programme (12-15 sessions, based on the manual by Farrell and Shaw (2012), including both cognitive / behavioural and experiential interventions for in-patients (n=9) with either borderline or cluster C personality disorders (and axis I co-morbidities) treated in a (sub)acute psychiatric in-patient setting. We evaluated pre- and post-treatment self-report of maladaptive and adaptive schema modes (using the SMI) and early maladaptive schemas (YSQ-3), as well as overall symptom severity (brief symptom check list, BSCL-53-S), patient satisfaction (ZUF-8) and group climate and coherence (GCQ-S)...
February 3, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28294318/impact-of-killing-in-war-a-randomized-controlled-pilot-trial
#13
Shira Maguen, Kristine Burkman, Erin Madden, Julie Dinh, Jeane Bosch, Jessica Keyser, Martha Schmitz, Thomas C Neylan
OBJECTIVE: The purpose of this pilot study was to test the effectiveness of Impact of Killing (IOK), a novel, cognitive-behavioral treatment (CBT) aimed at reducing mental health symptoms and functional impairment. METHOD: Participants were 33 combat Veterans with a posttraumatic stress disorder (PTSD) diagnosis who had completed trauma-focused psychotherapy and reported distress regarding killing or feeling responsible for the deaths of others in war. Veterans were randomized to either IOK treatment or a 6-week waitlist condition, after which Veterans could receive IOK...
March 10, 2017: Journal of Clinical Psychology
https://www.readbyqxmd.com/read/28292223/mechanism-of-action-for-obtaining-job-offers-with-virtual-reality-job-interview-training
#14
Matthew J Smith, Justin D Smith, Michael F Fleming, Neil Jordan, C Hendricks Brown, Laura Humm, Dale Olsen, Morris D Bell
OBJECTIVE: Four randomized controlled trials revealed that virtual-reality job interview training (VR-JIT) improved interviewing skills and the odds of obtaining a job offer among trainees with severe mental illness or autism spectrum disorder. This study assessed whether postintervention interviewing skills mediated the relationship between completion of virtual interviews and receiving job offers by six-month follow-up. METHODS: VR-JIT trainees (N=79) completed pre- and posttest mock interviews and a brief survey approximately six months later to assess whether they received a job offer...
March 15, 2017: Psychiatric Services: a Journal of the American Psychiatric Association
https://www.readbyqxmd.com/read/28291264/abnormal-white-matter-structural-connectivity-in-adults-with-obsessive-compulsive-disorder
#15
J Gan, M Zhong, J Fan, W Liu, C Niu, S Cai, L Zou, Ya Wang, Yi Wang, C Tan, R C K Chan, X Zhu
Obsessive-compulsive disorder (OCD) is a complex and severe psychiatric disorder whose pathogenesis is not fully understood. Recent studies have shown white matter (WM) alterations in adults with OCD, but the results have been inconsistent. The present study investigated WM structure in OCD patients with the hypothesis that large-scale brain networks may be disrupted in OCD. A total of 24 patients with OCD and 23 healthy controls (HCs) were scanned with diffusion tensor imaging. A tract-based spatial statistics (TBSS) approach was used to detect differences across the whole brain in patients with OCD vs HCs; post hoc fiber tractography was applied to characterize developmental differences between the two groups...
March 14, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28291261/modeling-anorexia-nervosa-transcriptional-insights-from-human-ipsc-derived-neurons
#16
P D Negraes, F R Cugola, R H Herai, C A Trujillo, A S Cristino, T Chailangkarn, A R Muotri, V Duvvuri
Anorexia nervosa (AN) is a complex and multifactorial disorder occurring predominantly in women. Despite having the highest mortality among psychiatric conditions, it still lacks robust and effective treatment. Disorders such as AN are most likely syndromes with multiple genetic contributions, however, genome-wide studies have been underpowered to reveal associations with this uncommon illness. Here, we generated induced pluripotent stem cells (iPSCs) from adolescent females with AN and unaffected controls...
March 14, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28289282/the-schizophrenia-and-autism-associated-gene-transcription-factor-4-regulates-the-columnar-distribution-of-layer-2-3-prefrontal-pyramidal-neurons-in-an-activity-dependent-manner
#17
S C Page, G R Hamersky, R A Gallo, M D Rannals, N E Calcaterra, M N Campbell, B Mayfield, A Briley, B N Phan, A E Jaffe, B J Maher
Disruption of the laminar and columnar organization of the brain is implicated in several psychiatric disorders. Here, we show in utero gain-of-function of the psychiatric risk gene transcription factor 4 (TCF4) severely disrupts the columnar organization of medial prefrontal cortex (mPFC) in a transcription- and activity-dependent manner. This morphological phenotype was rescued by co-expression of TCF4 plus calmodulin in a calcium-dependent manner and by dampening neuronal excitability through co-expression of an inwardly rectifying potassium channel (Kir2...
March 14, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28288907/in-vivo-quantification-of-amygdala-subnuclei-using-4-7-t-fast-spin-echo-imaging
#18
Arash Aghamohammadi-Sereshki, Yushan Huang, Fraser Olsen, Nikolai V Malykhin
The amygdala (AG) is an almond-shaped heterogeneous structure located in the medial temporal lobe. The majority of previous structural Magnetic Resonance Imaging (MRI) volumetric methods for AG measurement have so far only been able to examine this region as a whole. In order to understand the role of the AG in different neuropsychiatric disorders, it is necessary to understand the functional role of its subnuclei. The main goal of the present study was to develop a reliable volumetric method to delineate major AG subnuclei groups using ultra-high resolution high field MRI...
March 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28287780/examining-the-effects-of-a-novel-training-program-and-use-of-psychiatric-service-dogs-for-military-related-ptsd-and-associated-symptoms
#19
Megan L Kloep, Richard H Hunter, Sarah J Kertz
This study explored an intensive 3-week training program and use of psychiatric service dogs for military-related posttraumatic stress disorder (PTSD) and associated symptoms. The sample included 2 separate cohorts of military veterans (n = 7 and n = 5) with prior diagnoses of PTSD. Participants completed self-report measures assessing PTSD, depression, perception of social support, anger, and overall quality of life 1 month prior to the training (baseline), at arrival to the training site, and 6-month follow-up...
March 13, 2017: American Journal of Orthopsychiatry
https://www.readbyqxmd.com/read/28287184/a-disease-severity-index-to-identify-individuals-with-subjective-memory-decline-who-will-progress-to-mild-cognitive-impairment-or-dementia
#20
Daniel Ferreira, Farshad Falahati, Cecilia Linden, Rachel F Buckley, Kathryn A Ellis, Greg Savage, Victor L Villemagne, Christopher C Rowe, David Ames, Andrew Simmons, Eric Westman
Subjective memory decline (SMD) is a heterogeneous condition. While SMD might be the earliest sign of Alzheimer's disease (AD), it also occurs in aging and various neurological, medical, and psychiatric conditions. Identifying those with higher risk to develop dementia is thus a major challenge. We tested a novel disease severity index generated by multivariate data analysis with numerous structural MRI measures as input. The index was used to identify SMD individuals with high risk of progression to mild cognitive impairment (MCI) or AD...
March 13, 2017: Scientific Reports
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