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https://www.readbyqxmd.com/read/28393474/application-of-ipscs-to-understand-neurobiological-basis-of-bipolar-disorder-and-schizophrenia
#1
Yao-Nan Liu, Si-Yao Lu, Jun Yao
The etiology of neuropsychiatric disorders such as schizophrenia and bipolar disorder usually involves complex combinations of genetic defects/variations and environmental impacts, which hindered, for a long time, research efforts based on animal models and patients' non-neuronal cells or postmortem tissues. However, the development of human induced pluripotent stem cell technology by the Yamanaka group was immediately applied to establish cell research models for neuronal disorders. Since then, techniques to achieve highly efficient differentiation of different types of neural cells following iPSC modeling have made much progress...
April 10, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28376919/eye-movement-desensitization-and-reprocessing-therapy-versus-supportive-therapy-in-affective-relapse-prevention-in-bipolar-patients-with-a-history-of-trauma-study-protocol-for-a-randomized-controlled-trial
#2
Ana Moreno-Alcázar, Joaquim Radua, Ramon Landín-Romero, Laura Blanco, Mercè Madre, Maria Reinares, Mercè Comes, Esther Jiménez, Jose Manuel Crespo, Eduard Vieta, Victor Pérez, Patricia Novo, Marta Doñate, Romina Cortizo, Alicia Valiente-Gómez, Walter Lupo, Peter J McKenna, Edith Pomarol-Clotet, Benedikt L Amann
BACKGROUND: Up to 60% of patients with bipolar disorder (BD) have a history of traumatic events, which is associated with greater episode severity, higher risk of comorbidity and higher relapse rates. Trauma-focused treatment strategies for BD are thus necessary but studies are currently scarce. The aim of this study is to examine whether Eye Movement Desensitization and Reprocessing (EMDR) therapy focusing on adherence, insight, de-idealisation of manic symptoms, prodromal symptoms and mood stabilization can reduce episode severity and relapse rates and increase cognitive performance and functioning in patients with BD...
April 4, 2017: Trials
https://www.readbyqxmd.com/read/28365865/socio-demographic-and-clinical-characterization-of-patients-with-bipolar-disorder-i-vs-ii-a-nationwide-italian-study
#3
A Carlo Altamura, Massimiliano Buoli, Bruno Cesana, Bernardo Dell'Osso, Gianluigi Tacchini, Umberto Albert, Andrea Fagiolini, Andrea de Bartolomeis, Giuseppe Maina, Emilio Sacchetti
Bipolar disorders (BDs) are prevalent, comorbid and disabling conditions, associated with the highest suicide risk among psychiatric illnesses. In the last few years, new efforts to better characterize the socio-demographic and clinical profiles of BD type I vs II have been documented by several reports, with novel and insightful findings in the field. The present multicenter study aimed to provide a comprehensive and reliable representation of the Italian reality, through the analysis of the largest national sample of bipolar patients collected so far...
April 1, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28360814/long-acting-injectable-risperidone-use-in-an-11-years-old-bipolar-child
#4
Sevcan Karakoç Demirkaya, Süleyman Salih Zoroğlu
Early-onset bipolar disorder is difficult for child psychiatrists in terms of both diagnosis and treatment. The proper diagnostic evaluation is negatively impacted by the atypical clinical manifestation and rapid cycling pattern of the disease, together with common comorbidity with attention-deficit hyperactivity disorder and anxiety disorder. In addition to poor insight, nonadherence to treatment, poor family coping skills, and insufficient child psychiatric inpatient units make clinicians unsuccessful in following up and treating such patients...
December 2016: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28346060/stem-cell-derived-neurons-in-the-development-of-targeted-treatment-for-schizophrenia-and-bipolar-disorder
#5
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/28318898/distribution-and-levels-of-5-ht1b-receptors-in-anterior-cingulate-cortex-of-patients-with-bipolar-disorder-major-depressive-disorder-and-schizophrenia-an-autoradiography-study
#6
Emma R Veldman, Marie M Svedberg, Per Svenningsson, Johan Lundberg
The serotonin 1B receptor has recently received more interest as a possible new target for pharmacological treatment of psychiatric disorders. However, the exact mechanisms of action remain unclear. This study aimed to examine the binding distribution and levels of the serotonin 1B receptor in-depth in the anterior cingulate cortex (ACC) and provide more insight in its functional role in bipolar disorder (BD), major depressive disorder (MDD) and schizophrenia (SZ). Serotonin 1B receptor binding distribution was visualized with high resolution autoradiography (ARG), using the radioligand [(3)H]AZ10419369, in postmortem ACC tissue from patients diagnosed with BD (n=14), MDD (n=12), SZ (n=13) and healthy subjects (n=13)...
March 15, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28193882/neuronal-hyperexcitability-in-a-mouse-model-of-scn8a-epileptic-encephalopathy
#7
Luis F Lopez-Santiago, Yukun Yuan, Jacy L Wagnon, Jacob M Hull, Chad R Frasier, Heather A O'Malley, Miriam H Meisler, Lori L Isom
Patients with early infantile epileptic encephalopathy (EIEE) experience severe seizures and cognitive impairment and are at increased risk for sudden unexpected death in epilepsy (SUDEP). EIEE13 [Online Mendelian Inheritance in Man (OMIM) # 614558] is caused by de novo missense mutations in the voltage-gated sodium channel gene SCN8A Here, we investigated the neuronal phenotype of a mouse model expressing the gain-of-function SCN8A patient mutation, p.Asn1768Asp (Nav1.6-N1768D). Our results revealed regional and neuronal subtype specificity in the effects of the N1768D mutation...
February 28, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28166306/identification-of-shared-risk-loci-and-pathways-for-bipolar-disorder-and-schizophrenia
#8
Andreas J Forstner, Julian Hecker, Andrea Hofmann, Anna Maaser, Céline S Reinbold, Thomas W Mühleisen, Markus Leber, Jana Strohmaier, Franziska Degenhardt, Jens Treutlein, Manuel Mattheisen, Johannes Schumacher, Fabian Streit, Sandra Meier, Stefan Herms, Per Hoffmann, André Lacour, Stephanie H Witt, Andreas Reif, Bertram Müller-Myhsok, Susanne Lucae, Wolfgang Maier, Markus Schwarz, Helmut Vedder, Jutta Kammerer-Ciernioch, Andrea Pfennig, Michael Bauer, Martin Hautzinger, Susanne Moebus, Lorena M Schenk, Sascha B Fischer, Sugirthan Sivalingam, Piotr M Czerski, Joanna Hauser, Jolanta Lissowska, Neonila Szeszenia-Dabrowska, Paul Brennan, James D McKay, Adam Wright, Philip B Mitchell, Janice M Fullerton, Peter R Schofield, Grant W Montgomery, Sarah E Medland, Scott D Gordon, Nicholas G Martin, Valery Krasnov, Alexander Chuchalin, Gulja Babadjanova, Galina Pantelejeva, Lilia I Abramova, Alexander S Tiganov, Alexey Polonikov, Elza Khusnutdinova, Martin Alda, Cristiana Cruceanu, Guy A Rouleau, Gustavo Turecki, Catherine Laprise, Fabio Rivas, Fermin Mayoral, Manolis Kogevinas, Maria Grigoroiu-Serbanescu, Tim Becker, Thomas G Schulze, Marcella Rietschel, Sven Cichon, Heide Fier, Markus M Nöthen
Bipolar disorder (BD) is a highly heritable neuropsychiatric disease characterized by recurrent episodes of mania and depression. BD shows substantial clinical and genetic overlap with other psychiatric disorders, in particular schizophrenia (SCZ). The genes underlying this etiological overlap remain largely unknown. A recent SCZ genome wide association study (GWAS) by the Psychiatric Genomics Consortium identified 128 independent genome-wide significant single nucleotide polymorphisms (SNPs). The present study investigated whether these SCZ-associated SNPs also contribute to BD development through the performance of association testing in a large BD GWAS dataset (9747 patients, 14278 controls)...
2017: PloS One
https://www.readbyqxmd.com/read/28135597/influences-of-patient-informed-cognitive-complaints-on-activities-of-daily-living-in-patients-with-bipolar-disorder-an-exploratory-cross-sectional-study
#9
Conny Träger, Lone Decker, Eva Ejlersen Wæhrens, Ulla Knorr, Kamilla Miskowiak, Maj Vinberg
Many patients with bipolar disorder (BD) experience debilitating cognitive deficits, with risk of impaired occupational and psychosocial functioning. However, knowledge of how these deficits impact the patients' ability to perform Activities of Daily Living (ADL), tasks related to self-care and domestic life is limited. We explored the relation between impaired cognitive function and the ability to perform ADL in patients with BD. A total of 42 outpatients (mean age 36 years (range 19.0-58.0 years), 69% women) with BD in remission and with subjective cognitive complaints (≥ 13 on the Cognitive Complaints in Bipolar Disorder Rating Assessment questionnaire (COBRA)) were included...
March 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28135594/experiences-of-remote-mood-and-activity-monitoring-in-bipolar-disorder-a-qualitative-study
#10
K E A Saunders, A C Bilderbeck, P Panchal, L Z Atkinson, J R Geddes, G M Goodwin
BACKGROUND: Mobile technology enables high frequency mood monitoring and automated passive collection of data (e.g. actigraphy) from patients more efficiently and less intrusively than has previously been possible. Such techniques are increasingly being deployed in research and clinical settings however little is known about how such approaches are experienced by patients. Here, we explored the experiences of individuals with bipolar disorder engaging in a study involving mood and activity monitoring with a range of portable and wearable technologies...
March 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28077135/comorbidity-study-of-borderline-personality-disorder-applying-association-rule-mining-to-the-taiwan-national-health-insurance-research-database
#11
Cheng-Che Shen, Li-Yu Hu, Ya-Han Hu
BACKGROUND: Borderline personality disorder (BPD) is a complex clinical state with highly polymorphic symptoms and signs. Studies have demonstrated that people with a BPD diagnosis are likely to have numerous co-occurring psychiatric disorders and physical comorbidities. The aim of our study was to obtain further insight about the associations among comorbidities of BPD and to demonstrate the practicality of using association rule mining (ARM) technique in clinical databases. METHODS: A retrospective case-control study was conducted on information of 1460 patients (292 BPD patients and 1168 control patients) selected from the Taiwan National Health Insurance Research Database...
January 11, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/27978821/metabolic-syndrome-and-adverse-clinical-outcomes-in-patients-with-bipolar-disorder
#12
Ya-Mei Bai, Cheng-Ta Li, Shih-Jen Tsai, Pei-Chi Tu, Mu-Hong Chen, Tung-Ping Su
BACKGROUND: Metabolic syndrome (MetS) is highly prevalent among patients with bipolar disorder. MetS may cause complications in the brain, but studies investigating MetS-associated clinical psychiatric outcomes remain scant. METHODS: We enrolled clinically stable outpatients with bipolar disorder aged 18-65 years and performed anthropometric and fasting biochemical assessments to investigate MetS prevalence. We then performed clinical assessments by using the Young Mania Rating Scale for manic symptoms, the Montgomery-Åsberg Depression Rating Scale for depressive symptoms, the Positive and Negative Symptom Scale for psychotic symptoms, the Involuntary Movement Scale for tardive dyskinesia, the Barnes Akathisia Rating Scale for akathisia, the Udvalg for Kliniske Undersogelser for general side effects, the Schedule for Assessment of Insight for insight, the Global Assessment of Functioning scale for global functioning, and the Wisconsin Card Sorting Test (WCST) for cognitive executive function...
December 15, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27920534/perceptions-and-impact-of-bipolar-disorder-in-japan-results-of-an-internet-survey
#13
Koichiro Watanabe, Eiji Harada, Takeshi Inoue, Yuka Tanji, Toshiaki Kikuchi
Bipolar disorder is a recurrent and episodic illness. This survey study assessed experiences and identified clinical insights of individuals with bipolar disorder. An Internet-based monitor system database was screened for patients with bipolar disorder in Japan (February and March 2013). Of 1,050 patients, 457 completed surveys, and results were analyzed with descriptive statistics. Approximately one-fourth of respondents were diagnosed with bipolar disorder on their first visit to medical institutions, although the most common initial diagnosis was depression/depressive state (65%)...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27902448/rasgrp1-promotes-amphetamine-induced-motor-behavior-through-a-rhes-interaction-network-rhesactome-in-the-striatum
#14
Neelam Shahani, Supriya Swarnkar, Vincenzo Giovinazzo, Jenny Morgenweck, Laura M Bohn, Catherina Scharager-Tapia, Bruce Pascal, Pablo Martinez-Acedo, Kshitij Khare, Srinivasa Subramaniam
The striatum of the brain coordinates motor function. Dopamine-related drugs may be therapeutic to patients with striatal neurodegeneration, such as Huntington's disease (HD) and Parkinson's disease (PD), but these drugs have unwanted side effects. In addition to stimulating the release of norepinephrine, amphetamines, which are used for narcolepsy and attention-deficit/hyperactivity disorder (ADHD), trigger dopamine release in the striatum. The guanosine triphosphatase Ras homolog enriched in the striatum (Rhes) inhibits dopaminergic signaling in the striatum, is implicated in HD and L-dopa-induced dyskinesia, and has a role in striatal motor control...
November 15, 2016: Science Signaling
https://www.readbyqxmd.com/read/27894237/new-insight-in-improving-therapeutic-efficacy-of-antipsychotic-agents-an-overview-of-improved-in-vitro-and-in-vivo-performance-efficacy-upgradation-and-future-prospects
#15
Zahid Hussain, Hnin Ei Thu, Ahmad Nazrun Shuid
Psychotic disorders are severe mental disorders that rigorously affect patient personality, critical thinking, and perceptional ability. High prevalence, global dissemination and limitations of conventional pharmacological approaches compel a significant burden to the patient, medical professionals and the healthcare system. To date, numerous orally administered therapies are available for the management of depressive disorders, schizophrenia, anxiety, bipolar disorders and autism spectrum problems. However, poor water solubility, erratic oral absorption, extensive first-pass metabolism, low oral bioavailability and short half-lives are major factors which limit the pharmaceutical significance and therapeutic feasibility of these agents...
November 25, 2016: Current Drug Targets
https://www.readbyqxmd.com/read/27872267/endophenotypes-epigenetics-polygenicity-and-more-irv-gottesman-s-dynamic-legacy
#16
David L Braff, Carol A Tamminga
First, we describe the hallmark contributions of Irv Gottesman's pioneering scholarship for schizophrenia research including concepts of polygenicity, gene × environment interactions, epigenetics and the endophenotype concept. Gottesman and colleagues' twin studies showed that genes, not social factors, mediate schizophrenia risk. He then showed that schizophrenia is highly polygenic. Next, he introduced the concept of epigenetics into schizophrenia research. Gottesman then introduced the quantitative endophenotype concept...
January 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/27845777/newer-insights-into-the-role-of-mirna-a-tiny-genetic-tool-in-psychiatric-disorders-focus-on-post-traumatic-stress-disorder
#17
REVIEW
V V Giridharan, R A Thandavarayan, G R Fries, C Walss-Bass, T Barichello, N J Justice, M K Reddy, J Quevedo
Post-traumatic stress disorder (PTSD) is a mental disorder occurring in about 2-9% of individuals after their exposure to life-threatening events, such as severe accidents, sexual abuse, combat or a natural catastrophe. Because PTSD patients are exposed to trauma, it is likely that epigenetic modifications have an important role in disease development and prognosis. For the past two decades, abnormal expression of the epigenetic regulators microRNAs (miRs) and miR-mediated gene regulation have been given importance in a variety of human diseases, such as cancer, heart disease and viral infection...
November 15, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27834648/epidural-stimulation-of-rat-spinal-cord-at-lumbosacral-segment-using-a-surface-electrode-a-computer-simulation-study
#18
Qi Xu, Li Kong, Hui Zhou, Jiping He
Clinical research indicates that the epidural spinal cord stimulation (ESCS) at lumbosacral segment has shown potential for promoting locomotor recovery in patients with incomplete spinal cord injury. However, the underlying neural mechanism needs to be determined by animal experiments. In order to refine experimental protocols, we used a finite element simulation to investigate the activation of nerve fibers in a rat spinal cord model. Our model is composed of a volume conductor model from L1 to S2 spinal segments and the McIntyre-Richard-Grill axon model, which is used to investigate the threshold of selected spinal fibers with different diameters at varied locations and predict the neural responses of any target fibers with bipolar electrode configuration...
November 4, 2016: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/27792813/asymmetrical-functional-deficits-of-on-and-off-retinal-processing-in-the-mdx3cv-mouse-model-of-duchenne-muscular-dystrophy
#19
Tina I Tsai, Mirella Telles Salgueiro Barboni, Balázs Vince Nagy, Michel J Roux, Alvaro Rendon, Dora Fix Ventura, Jan Kremers
Purpose: The dystrophin mouse mutant mdx3Cv exhibits scotopic electroretinograpic (ERG) abnormalities, which resemble clinical changes observed in Duchenne muscular dystrophy (DMD) patients. In the present study, ERGs obtained from mdx3Cv and their wild-type littermates under scotopic, mesopic, and photopic conditions were analyzed to provide further insight on the affected retinal pathways, and to compare them with human data. Methods: Electroretinograms of mdx3Cv (n = 9) and age-matched C57BL/6J mice (n = 10) included the scotopic full-field flash (for outer retinal deficits in rod pathway), scotopic threshold response (for inner retinal integrity), photopic flash, sinusoidal flicker (for outer retinal deficits in cone pathway), mesopic rapid-on/-off sawtooth flicker, and photopic long-duration flash measurements (for separate ON-/OFF-responses under different conditions)...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27771971/temporal-diagnostic-and-tissue-specific-regulation-of-nrg3-isoform-expression-in-human-brain-development-and-affective-disorders
#20
Clare Paterson, Yanhong Wang, Thomas M Hyde, Daniel R Weinberger, Joel E Kleinman, Amanda J Law
OBJECTIVE: Genes implicated in schizophrenia are enriched in networks differentially regulated during human CNS development. Neuregulin 3 (NRG3), a brain-enriched neurotrophin, undergoes alternative splicing and is implicated in several neurological disorders with developmental origins. Isoform-specific increases in NRG3 are observed in schizophrenia and associated with rs10748842, a NRG3 risk polymorphism, suggesting NRG3 transcriptional dysregulation as a molecular mechanism of risk...
October 24, 2016: American Journal of Psychiatry
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