keyword
MENU ▼
Read by QxMD icon Read
search

Bipolar phenotype

keyword
https://www.readbyqxmd.com/read/28449557/wnt-and-gsk3-signaling-pathways-in-bipolar-disorder-clinical-and-therapeutic-implications
#1
REVIEW
Ather Muneer
The neurobiology of bipolar disorder, a chronic and systemic ailment is not completely understood. The bipolar phenotype manifests in myriad ways, and psychopharmacological agents like lithium have long term beneficial effects. The enzyme glycogen synthase kinase 3 (GSK3) has come into focus, as lithium and several other mood stabilizing medications inhibit its activity. This kinase and its key upstream modulator, Wnt are dysregulated in mood disorders and there is a growing impetus to delineate the chief substrates involved in the development of these illnesses...
May 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28449121/tri-directional-anaphases-as-a-novel-chromosome-segregation-defect-in-human-oocytes
#2
Jenna Haverfield, Nicola L Dean, Diana Nöel, Gaudeline Rémillard-Labrosse, Veronique Paradis, Isaac-Jacques Kadoch, Greg FitzHarris
STUDY QUESTION: What are the chromosome segregation errors in human oocyte meiosis-I that may underlie oocyte aneuploidy? SUMMARY ANSWER: Multiple modes of chromosome segregation error were observed, including tri-directional anaphases, which we attribute to loss of bipolar spindle structure at anaphase-I. WHAT IS KNOWN ALREADY: Oocyte aneuploidy is common and associated with infertility, but mechanistic information on the chromosome segregation errors underlying these defects is scarce...
April 25, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28439101/largest-gwas-of-ptsd-n-20%C3%A2-070-yields-genetic-overlap-with-schizophrenia-and-sex-differences-in-heritability
#3
L E Duncan, A Ratanatharathorn, A E Aiello, L M Almli, A B Amstadter, A E Ashley-Koch, D G Baker, J C Beckham, L J Bierut, J Bisson, B Bradley, C-Y Chen, S Dalvie, L A Farrer, S Galea, M E Garrett, J E Gelernter, G Guffanti, M A Hauser, E O Johnson, R C Kessler, N A Kimbrel, A King, N Koen, H R Kranzler, M W Logue, A X Maihofer, A R Martin, M W Miller, R A Morey, N R Nugent, J P Rice, S Ripke, A L Roberts, N L Saccone, J W Smoller, D J Stein, M B Stein, J A Sumner, M Uddin, R J Ursano, D E Wildman, R Yehuda, H Zhao, M J Daly, I Liberzon, K J Ressler, C M Nievergelt, K C Koenen
The Psychiatric Genomics Consortium-Posttraumatic Stress Disorder group (PGC-PTSD) combined genome-wide case-control molecular genetic data across 11 multiethnic studies to quantify PTSD heritability, to examine potential shared genetic risk with schizophrenia, bipolar disorder, and major depressive disorder and to identify risk loci for PTSD. Examining 20 730 individuals, we report a molecular genetics-based heritability estimate (h(2)SNP) for European-American females of 29% that is similar to h(2)SNP for schizophrenia and is substantially higher than h(2)SNP in European-American males (estimate not distinguishable from zero)...
April 25, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28421717/cognitive-profiles-in-euthymic-patients-with-bipolar-disorders-results-from-the-face-bd-cohort
#4
Paul Roux, Aurélie Raust, Anne Sophie Cannavo, Valérie Aubin, Bruno Aouizerate, Jean-Michel Azorin, Frank Bellivier, Raoul Belzeaux, Thierry Bougerol, Iréna Cussac, Philippe Courtet, Bruno Etain, Sébastien Gard, Sophie Job, Jean-Pierre Kahn, Marion Leboyer, Emilie Olié, Chantal Henry, Christine Passerieux
OBJECTIVES: Although cognitive deficits are a well-established feature of bipolar disorders (BD), even during periods of euthymia, little is known about cognitive phenotype heterogeneity among patients with BD. METHODS: We investigated neuropsychological performance in 258 euthymic patients with BD recruited via the French network of expert centers for BD. We used a test battery assessing six domains of cognition. Hierarchical cluster analysis of the cross-sectional data was used to determine the optimal number of subgroups and to assign each patient to a specific cognitive cluster...
April 19, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28401296/associations-of-specific-psychiatric-disorders-with-isolated-focal-dystonia-and-monogenic-and-idiopathic-parkinson-s-disease
#5
Susanne Steinlechner, Johann Hagenah, Hans-Jürgen Rumpf, Christian Meyer, Ulrich John, Tobias Bäumer, Norbert Brüggemann, Meike Kasten, Alexander Münchau, Christine Klein, Rebekka Lencer
Comorbidity of psychiatric disorders in patients with movement disorders is common. Often, psychiatric symptoms manifest before the onset of the movement disorder, thus not representing a mere reaction to its burden. How the disease mechanisms of psychiatric and movement disorders are related is still poorly understood. The aim of the present study was to compare prevalence rates of specific psychiatric disorders between different movement disorders including isolated focal dystonia (IFD, N = 91), monogenic Parkinson's disease (PD, N = 41), idiopathic PD (N = 45), and a sample from a Northern Germany general population (TACOS Study; N = 4075)...
April 11, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28395208/increased-dopamine-receptor-expression-and-anti-depressant-response-following-deep-brain-stimulation-of-the-medial-forebrain-bundle
#6
Manoj P Dandekar, Dustin Luse, Carson Hoffmann, Patrick Cotton, Travis Peery, Christian Ruiz, Caroline Hussey, Vijayasree V Giridharan, Jair C Soares, Joao Quevedo, Albert J Fenoy
BACKGROUND: Among several potential neuroanatomical targets pursued for deep brain stimulation (DBS) for treating those with treatment-resistant depression (TRD), the superolateral-branch of the medial forebrain bundle (MFB) is emerging as a privileged location. We investigated the antidepressant-like phenotypic and chemical changes associated with reward-processing dopaminergic systems in rat brains after MFB-DBS. METHODS: Male Wistar rats were divided into three groups: sham-operated, DBS-Off, and DBS-On...
April 5, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28392151/effects-of-risk-for-bipolar-disorder-on-brain-function-a-twin-and-family-study
#7
Genichi Sugihara, Fergus Kane, Marco M Picchioni, Christopher A Chaddock, Eugenia Kravariti, Sridevi Kalidindi, Fruhling Rijsdijk, Timothea Toulopoulou, Vivienne A Curtis, Colm McDonald, Robin M Murray, Philip McGuire
Bipolar disorder (BPD) is associated with altered regional brain function during the performance of cognitive tasks. The relative contribution of genetic and environmental risk factors for BPD to these changes has not yet been quantified. We sought to address this issue in a functional neuroimaging study of people who varied in their risk for BPD. Functional magnetic resonance imaging was used to study 124 subjects (29 twin and 9 sibling pairs with at least one member with BPD, and 24 healthy twin pairs) performing a working memory task...
April 6, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28390849/cognitive-burden-of-anticholinergic-medications-in-psychotic-disorders
#8
Seenae Eum, S Kristian Hill, Leah H Rubin, Ryan M Carnahan, James L Reilly, Elena I Ivleva, Sarah K Keedy, Carol A Tamminga, Godfrey D Pearlson, Brett A Clementz, Elliot S Gershon, Matcheri S Keshavan, Richard S E Keefe, John A Sweeney, Jeffrey R Bishop
BACKGROUND: Patients with psychotic disorders are often treated with numerous medications, many of which have anticholinergic activity. We assessed cognition in relation to the cumulative anticholinergic burden of multiple drugs included in treatment regimens of participants from the Bipolar-Schizophrenia Network on Intermediate Phenotypes (B-SNIP) study. METHOD: Clinically stable participants with schizophrenia (n=206), schizoaffective disorder (n=131), and psychotic bipolar disorder (n=146) were examined...
April 5, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28382556/acute-progressive-paravascular-placoid-neuroretinopathy-with-negative-type-electroretinography-in-paraneoplastic-retinopathy
#9
Fred K Chen, Avenell L Chew, Dan Zhang, Shang-Chih Chen, Enid Chelva, Erandi Chandrasekera, Eleanor M H Koay, John Forrester, Samuel McLenachan
PURPOSE: Paraneoplastic retinopathy can be the first manifestation of systemic malignancy. A subset of paraneoplastic retinopathy is characterized by negative-type electroretinography (ERG) without fundus abnormality. Here we describe the multimodal imaging and clinico-pathological correlation of a unique case of acute progressive paravascular placoid neuroretinopathy with suspected retinal depolarizing bipolar cell dysfunction preceding the diagnosis of metastatic small cell carcinoma of the prostate...
April 5, 2017: Documenta Ophthalmologica. Advances in Ophthalmology
https://www.readbyqxmd.com/read/28372995/targeting-aggression-in-severe-mental-illness-the-predictive-role-of-genetic-epigenetic-and-metabolomic-markers
#10
REVIEW
Mirko Manchia, Vassilios Fanos
Human aggression is a complex and widespread social behavior that is overrepresented in individuals affected by severe mental illness (SMI), such as schizophrenia (SCZ), bipolar disorder (BD), autism spectrum disorder (ASD), and attention-deficit/hyperactivity disorder (ADHD). A substantial proportion of the liability threshold for aggressive behavior is determined by genetic factors, and environmental moderators might precipitate the manifestation of this behavioral phenotype through modification of gene expression via the epigenetic machinery...
April 2, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28346060/stem-cell-derived-neurons-in-the-development-of-targeted-treatment-for-schizophrenia-and-bipolar-disorder
#11
Bradley Watmuff, Bangyan Liu, Rakesh Karmacharya
The recent advent of induced pluripotent stem cells has enabled the study of patient-specific and disease-related neurons in vitro and has facilitated new directions of inquiry into disease mechanisms. With these approaches, we now have the possibility of correlating ex vivo cellular phenotypes with individual patient response to treatment and/or side effects, which makes targeted treatments for schizophrenia and bipolar disorder a distinct prospect in the coming years. Here, we briefly review the current state of stem cell-based models and explore studies that are providing new insights into the disease biology of schizophrenia and bipolar disorder, which are laying the foundations for the development of novel targeted therapies...
April 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28342679/pharmacogenomic-aspects-of-bipolar-disorder-an-update
#12
M Budde, D Degner, J Brockmöller, T G Schulze
The hopes for readily implementable precision medicine are high. For many complex disorders, such as bipolar disorder, these hopes critically hinge on tangible successes in pharmacogenetics of treatment response or susceptibility to adverse events. In this article, we review the current state of pharmacogenomics of bipolar disorder including latest results from candidate genes and genome-wide association studies. The majority of studies focus on response to lithium treatment. Although a host of genes has been studied, hardly any replicated findings have emerged so far...
March 22, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28338967/thought-disorder-in-schizophrenia-and-bipolar-disorder-probands-their-relatives-and-nonpsychiatric-controls
#13
Charity J Morgan, Michael J Coleman, Ayse Ulgen, Lenore Boling, Jonathan O Cole, Frederick V Johnson, Jan Lerbinger, J Alexander Bodkin, Philip S Holzman, Deborah L Levy
Thought disorder (TD) has long been associated with schizophrenia (SZ) and is now widely recognized as a symptom of mania and other psychotic disorders as well. Previous studies have suggested that the TD found in the clinically unaffected relatives of SZ, schizoaffective and bipolar probands is qualitatively similar to that found in the probands themselves. Here, we examine which quantitative measures of TD optimize the distinction between patients with diagnoses of SZ and bipolar disorder with psychotic features (BP) from nonpsychiatric controls (NC) and from each other...
May 1, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28322827/structural-divergence-of-essential-triad-ribbon-synapse-proteins-among-placental-mammals-implications-for-preclinical-trials-in-photoreceptor-transplantation-therapy
#14
Christopher R J Laver, Joanne A Matsubara
As photoreceptor transplantation rapidly moves closer to the clinic, verifying graft efficacy in animal models may have unforeseen xenogeneic barriers. Although photoreceptor transplants have most convincingly exhibited functional synaptogenesis in conspecific studies, such evidence (while ruling out false-positives due to: viral graft labeling, fusion/cytosolic transfer, or neuroprotection) has not yet been shown for discordant xenografts. From this, a fundamental question should be raised: is useful xenosynaptogenesis likely between human photoreceptors and mouse retina? The triad ribbon synapse (TRS) that would normally form is unique and contains trans-synaptic proteins essential to its formation and function...
March 18, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28320224/identification-of-common-neural-circuit-disruptions-in-cognitive-control-across-psychiatric-disorders
#15
Lisa M McTeague, Julia Huemer, David M Carreon, Ying Jiang, Simon B Eickhoff, Amit Etkin
OBJECTIVE: Cognitive deficits are a common feature of psychiatric disorders. The authors investigated the nature of disruptions in neural circuitry underlying cognitive control capacities across psychiatric disorders through a transdiagnostic neuroimaging meta-analysis. METHOD: A PubMed search was conducted for whole-brain functional neuroimaging articles published through June 2015 that compared activation in patients with axis I disorders and matched healthy control participants during cognitive control tasks...
March 21, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28315578/longitudinal-sleep-phenotypes-among-offspring-of-bipolar-parents-and-community-controls
#16
Jessica C Levenson, Adriane Soehner, Brian Rooks, Tina R Goldstein, Rasim Diler, John Merranko, David Axelson, Ben I Goldstein, David A Brent, Danella Hafeman, Mary Beth Hickey, Kelly Monk, Dara Sakolsky, David J Kupfer, Boris Birmaher
BACKGROUND: Sleep disturbances are a prominent feature of bipolar disorder (BP). However, it remains unclear how sleep phenotypes may evolve among at-risk youth, and their relevance to BP onset. METHODS: Pittsburgh Bipolar Offspring Study (BIOS) offspring (ages 10-18) and their parents completed assessments approximately every two years pertaining to current psychopathology and offspring sleep habits. A latent transition analysis (LTA) identified latent sleep groups within offspring based on their ratings of six sleep domains using the School Sleep Habits Survey...
March 6, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28295013/impact-of-familial-loading-on-prefrontal-activation-in-major-psychiatric-disorders-a-near-infrared-spectroscopy-nirs-study
#17
Kazutaka Ohi, Takamitsu Shimada, Hiroaki Kihara, Toshiki Yasuyama, Kazuyuki Sawai, Yukihisa Matsuda, Kazuaki Oshima, Hiroaki Okubo, Yusuke Nitta, Takashi Uehara, Yasuhiro Kawasaki
Family history (FH) is predictive of the development of major psychiatric disorders (PSY). Familial psychiatric disorders are largely a consequence of genetic factors and typically exhibit more severe impairments. Decreased prefrontal activity during verbal fluency testing (VFT) may constitute an intermediate phenotype for PSY. We investigated whether familial PSY were associated with a greater severity of prefrontal dysfunction in accordance with genetic loading. We measured prefrontal activity during VFT using near-infrared spectroscopy (NIRS) in patients with schizophrenia (SCZ, n = 45), major depressive disorder (MDD, n = 26) or bipolar disorder (BIP, n = 22) and healthy controls (HC, n = 51)...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28289279/next-gen-sequencing-identifies-non-coding-variation-disrupting-mirna-binding-sites-in-neurological-disorders
#18
P Devanna, X S Chen, J Ho, D Gajewski, S D Smith, A Gialluisi, C Francks, S E Fisher, D F Newbury, S C Vernes
Understanding the genetic factors underlying neurodevelopmental and neuropsychiatric disorders is a major challenge given their prevalence and potential severity for quality of life. While large-scale genomic screens have made major advances in this area, for many disorders the genetic underpinnings are complex and poorly understood. To date the field has focused predominantly on protein coding variation, but given the importance of tightly controlled gene expression for normal brain development and disorder, variation that affects non-coding regulatory regions of the genome is likely to play an important role in these phenotypes...
March 14, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28282074/-epigenetics-2-0-the-multiple-faces-of-the-genome
#19
Marcelo Rubinstein
Epigenetics is the branch of genetics that studies the dynamic relationship between stable genotypes and varying phenotypes. To this end, epigenetics aims to discover the molecular mechanisms that explain how different nutrients and hormones, environmental changes, and emotional, social and cognitive experiences modify gene expression and behaviors, even permanently so. Psychiatry has learned that diseases with strong genetic predisposition, such as schizophrenia, show a concordance of around 50% between monozygotic twins, thus evidencing the importance of the genetic background and the presence of environmental variables that stimulate or block phenotypic development...
September 2016: Vertex: Revista Argentina de Psiquiatriá
https://www.readbyqxmd.com/read/28277568/neurodevelopmental-perspectives-on-wnt-signaling-in-psychiatry
#20
REVIEW
Kimberly A Mulligan, Benjamin N R Cheyette
Mounting evidence indicates that Wnt signaling is relevant to pathophysiology of diverse mental illnesses including schizophrenia, bipolar disorder, and autism spectrum disorder. In the 35 years since Wnt ligands were first described, animal studies have richly explored how downstream Wnt signaling pathways affect an array of neurodevelopmental processes and how their disruption can lead to both neurological and behavioral phenotypes. Recently, human induced pluripotent stem cell (hiPSC) models have begun to contribute to this literature while pushing it in increasingly translational directions...
February 2017: Molecular Neuropsychiatry
keyword
keyword
88060
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"