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https://www.readbyqxmd.com/read/28921840/the-role-of-cadherin-genes-in-five-major-psychiatric-disorders-a-literature-update
#1
REVIEW
Ziarih Hawi, Janette Tong, Callum Dark, Hannah Yates, Beth Johnson, Mark A Bellgrove
Converging evidence from candidate gene, genome-wide linkage, and association studies support a role of cadherins in the pathophysiology of five major psychiatric disorders including attention deficit hyperactivity disorder, autism spectrum disorder (ASD), schizophrenia (SCZ), bipolar disorder (BD), and major depressive disorder (MDD). These molecules are transmembrane proteins which act as cell adhesives by forming adherens junctions (AJs) to bind cells within tissues. Members of the cadherin superfamily are also involved in biological processes such as signal transduction and plasticity that have been implicated in the etiology of major psychiatric conditions...
September 18, 2017: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/28921675/altered-cav1-2-function-in-the-timothy-syndrome-mouse-model-produces-ascending-serotonergic-abnormalities
#2
Daniel G Ehlinger, Kathryn G Commons
Polymorphism in the gene CACNA1C, encoding the pore-forming subunit of Cav1.2 L-type calcium channels, has one of the strongest genetic linkages to schizophrenia, bipolar disorder, and major depressive disorder: psychopathologies in which serotonin signaling has been implicated. Additionally, a gain-of-function mutation in CACNA1C is responsible for the neurodevelopmental disorder Timothy Syndrome that presents with prominent behavioral features on the autism spectrum. Given an emerging role for serotonin in the etiology of autism spectrum disorders, we investigate the relationship between Cav1...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28919554/revisiting-the-wandering-womb-oxytocin-in-endometriosis-and-bipolar-disorder
#3
REVIEW
Natalie L Dinsdale, Bernard J Crespi
Hippocrates attributed women's high emotionality - hysteria - to a 'wandering womb'. Although hysteria diagnoses were abandoned along with the notion that displaced wombs cause emotional disturbance, recent research suggests that elevated levels of oxytocin occur in both bipolar disorder and endometriosis, a gynecological condition involving migration of endometrial tissue beyond the uterus. We propose and evaluate the hypothesis that elevated oxytocinergic system activity jointly contributes to bipolar disorder and endometriosis...
September 14, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28917190/posttraumatic-stress-symptoms-and-dissociation-between-childhood-trauma-and-two-different-types-of-psychosis-like-experience
#4
Ji Young Choi
This study examined the roles of posttraumatic stress (PTS) symptoms and dissociation in the relationship between childhood trauma and two different types of psychosis-like experience, including persecutory ideation and aberrant experience, in non-psychotic psychiatric patients. From August 2015 to August 2016, among psychiatric out patients seeking treatment at the Department of Psychiatry at a major teaching medical hospital in Seoul, Korea, 169 patients who had never been diagnosed with a psychotic disorder, including schizophrenia spectrum disorder, bipolar disorder, and/or depressive disorder with psychotic features, completed the Korean Childhood Trauma Questionnaire, the Korean version of the Impact of Event Scale-Revised, the modified Korean version of the Peritraumatic Dissociation Experiences Questionnaire, and the Korean Minnesota Multiphasic Personality Inventory-2 (MMPI-2)...
September 13, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/28912037/the-role-of-mental-imagery-in-mood-amplification-an-investigation-across-subclinical-features-of-bipolar-disorders
#5
Caitlin O'Donnell, Martina Di Simplicio, Randi Brown, Emily A Holmes, Stephanie Burnett Heyes
Vivid emotional mental imagery has been identified across a range of mental disorders. In bipolar spectrum disorders - psychopathologies characterized by mood swings that alternate between depression and mania, and include irritability and mixed affect states - mental imagery has been proposed to drive instability in both 'positive' and 'negative' mood. That is, mental imagery can act as an "emotional amplifier". The current experimental study tested this hypothesis and investigated imagery characteristics associated with mood amplification using a spectrum approach to psychopathology...
August 18, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28902457/the-role-of-clock-gene-in-psychiatric-disorders-evidence-from-human-and-animal-research
#6
REVIEW
Jaqueline B Schuch, Julia P Genro, Clarissa R Bastos, Gabriele Ghisleni, Luciana Tovo-Rodrigues
The circadian clock system drives daily rhythms in physiology, metabolism, and behavior in mammals. Molecular mechanisms of this system consist of multiple clock genes, with Circadian Locomotor Output Cycles Kaput (CLOCK) as a core member that plays an important role in a wide range of behaviors. Alterations in the CLOCK gene are associated with common psychiatric disorders as well as with circadian disturbances comorbidities. This review addresses animal, molecular, and genetic studies evaluating the role of the CLOCK gene on many psychiatric conditions, namely autism spectrum disorder, schizophrenia, attention-deficit/hyperactivity disorder, major depressive disorder, bipolar disorder, anxiety disorder, and substance use disorder...
September 13, 2017: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/28892068/dysregulation-of-objectively-assessed-24-hour-motor-activity-patterns-as-a-potential-marker-for-bipolar-i-disorder-results-of-a-community-based-family-study
#7
H Shou, L Cui, I Hickie, D Lameira, F Lamers, J Zhang, C Crainiceanu, V Zipunnikov, K R Merikangas
There has been a growing number of studies that have employed actigraphy to investigate differences in motor activity in mood disorders. In general, these studies have shown that people with bipolar disorders (BPDs) tend to exhibit greater variability and less daytime motor activity than controls. The goal of this study was to examine whether patterns of motor activity differ in euthymic individuals across the full range of mood disorder subtypes (Bipolar I (BPI), Bipolar II (BPII) and major depression (MDD)) compared with unaffected controls in a community-based family study of mood spectrum disorders...
August 22, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28883800/childhood-trauma-and-minimization-denial-in-people-with-and-without-a-severe-mental-disorder
#8
Chelsea Church, Ole A Andreassen, Steinar Lorentzen, Ingrid Melle, Monica Aas
Background: Childhood trauma has garnered extensive research concerning its role in the psychopathology of mental disorders, including psychosis. The Childhood Trauma Questionnaire (CTQ) utilizes a minimization/denial (MD) scale to denote potential under-reporters of trauma, yet MD scores are infrequently reported and validations of the scale are lacking in the literature. STUDY AIM: Elucidate differences in MD between patients with severe mental disorders to healthy individuals, and secondly, investigate if MD influences reports of childhood trauma between the groups...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28864122/biological-aspects-and-candidate-biomarkers-for-rapid-cycling-in-bipolar-disorder-a-systematic-review
#9
REVIEW
Massimiliano Buoli, Marta Serati, A Carlo Altamura
Rapid-cycling bipolar disorder represents a frequent severe subtype of illness which has been associated with poor response to pharmacological treatment. Aim of the present article is to provide an updated review of biological markers associated with rapid-cycling bipolar disorder. A research in the main database sources has been conducted to identify relevant papers about the topic. Rapid-cycling bipolar disorder patients seem to have a more frequent family history for bipolar spectrum disorders (d range: 0...
August 24, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28862044/acute-lamotrigine-overdose-a-systematic-review-of-published-adult-and-pediatric-cases
#10
Bader Alyahya, Marjorie Friesen, Bénédicte Nauche, Martin Laliberté
CONTEXT: Lamotrigine is a broad-spectrum anticonvulsant commonly used to treat seizure and bipolar mood disorders. Evidence from case series and retrospective studies indicate that lamotrigine overdose is usually benign. However, there are reported cases of cardiac arrest and mortality following lamotrigine overdose. We undertook a systematic review of the literature on lamotrigine overdoses to better understand the clinical severity, the relevance of serum concentrations, and therapeutic interventions for overdose...
September 1, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28845834/clinical-stabilisation-with-lacosamide-of-mood-disorder-comorbid-with-ptsd-and-fronto-temporal-epilepsy
#11
Ilaria Cuomo, Georgios D Kotzalidis, Sergio De Filippis
BACKGROUND AND AIM OF THE WORK: Mood disorders are often complicated by comorbidity with epilepsy. Anxiety and personality disorders may worsen prognosis and treatment outcome. Lacosamide has been recently introduced as adjunctive treatment for partial epilepsy. Its mechanism consists of selective slow inactivation of voltage-gated sodium channels, thus promoting an extended stabilisation of cell membranes. Antiepileptic drugs have been largely used since the 1950s in psychiatry as mood stabilisers due to their membrane stabilising and anti-kindling effects...
August 23, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28822116/interactions-between-variation-in-candidate-genes-and-environmental-factors-in-the-etiology-of-schizophrenia-and-bipolar-disorder-a-systematic-review
#12
REVIEW
Błażej Misiak, Filip Stramecki, Łukasz Gawęda, Katarzyna Prochwicz, Maria M Sąsiadek, Ahmed A Moustafa, Dorota Frydecka
Schizophrenia and bipolar disorder (BD) are complex and multidimensional disorders with high heritability rates. The contribution of genetic factors to the etiology of these disorders is increasingly being recognized as the action of multiple risk variants with small effect sizes, which might explain only a minor part of susceptibility. On the other site, numerous environmental factors have been found to play an important role in their causality. Therefore, in recent years, several studies focused on gene × environment interactions that are believed to bridge the gap between genetic underpinnings and environmental insults...
August 18, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28804990/characterizing-the-experience-of-auditory-verbal-hallucinations-and-accompanying-delusions-in-individuals-with-a-diagnosis-of-bipolar-disorder-a-systematic-review
#13
REVIEW
L M Smith, L C Johns, Rlc Mitchell
OBJECTIVES: The aim of the current study was to inform ongoing attempts to identify clinically meaningful subcategories of auditory verbal hallucination (AVH), and to evaluate evidence that might pertain to the suitability of current psychological interventions for people with bipolar disorder (BD) who experience psychotic symptoms. METHODS: A comprehensive synthesis of findings on the phenomenology of AVH and delusions in BD is included, alongside a critical review of clinical and cognitive correlates...
August 14, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28792172/concept-and-identification-of-soft-bipolarity-in-patients-presenting-with-depression-need-for-careful-screening-by-physicians
#14
Pooja Patnaik Kuppili, Priyanka Yadav, Raman Deep Pattanayak
The bipolar spectrum is a broader concept, which questions the strict dichotomous categorical division of erstwhile manic-depressive illness into two discrete categories viz. bipolar disorder and major depressive disorder, thereby overlooking a wide 'spectrum' of patients which lie 'in between' the two extremes. The presence of underlying bipolar 'spectrum' or 'soft bipolarity' often goes undetected in patients presenting with major depression. This sub-group of patients may not stabilize with indiscriminate use of anti-depressant drugs, and without proper management, it may be associated with continued non-responsive symptoms, increased suicidality and poorer prognosis...
July 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28776766/utility-of-functioning-measures-in-the-prediction-of-independent-living-status-in-older-adults-with-serious-mental-illness
#15
Karen L Fortuna, Matthew C Lohman, Martha L Bruce, Stephen J Bartels
OBJECTIVE: The objective of the study was to compare the predictive utility of three commonly used functioning measures for people with serious mental illness in the prediction of independent living status. METHODS: We conducted a secondary data analysis from the Helping Older People Experience Success study with adults aged 50 years and older with a diagnosis of bipolar disorder, schizoaffective disorder, schizophrenia, or major depressive disorder (N = 183)...
August 4, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28776581/decreased-brain-ph-as-a-shared-endophenotype-of-psychiatric-disorders
#16
Hideo Hagihara, Vibeke S Catts, Yuta Katayama, Hirotaka Shoji, Tsuyoshi Takagi, Freesia L Huang, Akito Nakao, Yasuo Mori, Kuo-Ping Huang, Shunsuke Ishii, Isabella A Graef, Keiichi I Nakayama, Cynthia Shannon Weickert, Tsuyoshi Miyakawa
Although the brains of patients with schizophrenia and bipolar disorder exhibit decreased brain pH relative to those of healthy controls upon postmortem examination, it remains controversial whether this finding reflects a primary feature of the diseases or is a result of confounding factors such as medication and agonal state. To date, systematic investigation of brain pH has not been undertaken using animal models, which can be studied without confounds inherent in human studies. In the present study, we first reevaluated the pH of the postmortem brains of patients with schizophrenia and bipolar disorder by conducting a meta-analysis of existing datasets from ten studies...
August 4, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28741646/aggressiveness-in-depression-a-neglected-symptom-possibly-associated-with-bipolarity-and-mixed-features
#17
N Verdolini, G Perugi, L Samalin, A Murru, J Angst, J-M Azorin, C L Bowden, S Mosolov, A H Young, M Barbuti, G Guiso, D Popovic, E Vieta, I Pacchiarotti
OBJECTIVE: To evaluate aggressiveness during a major depressive episode (MDE) and its relationship with bipolar disorder (BD) in a post hoc analysis of the BRIDGE-II-MIX study. METHOD: A total of 2811 individuals were enrolled in this multicenter cross-sectional study. MDE patients with (MDE-A, n = 399) and without aggressiveness (MDE-N, n = 2412) were compared through chi-square test or Student's t-test. A stepwise backward logistic regression model was performed...
July 25, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28735645/psychiatric-consultation-in-the-collaborative-care-model-the-bipolar-sieve-effect
#18
James R Phelps, James James
Around the world, psychiatrists are in exceptionally short supply. The majority of mental health treatment is delivered in primary care. In the United States, the Collaborative Care Model (CCM) addresses the shortfall of psychiatrists by providing indirect consultation in primary care. A Cochrane meta-analysis affirms the efficacy this model for depression and anxiety. However, our experience with the CCM suggests that most patients referred for consultation have problems far more complex than simple depression and anxiety...
August 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28723388/region-specific-impairments-in-parvalbumin-interneurons-in-social-isolation-reared-mice
#19
Hiroshi Ueno, Shunsuke Suemitsu, Shinji Murakami, Naoya Kitamura, Kenta Wani, Motoi Okamoto, Yosuke Matsumoto, Takeshi Ishihara
Many neuropsychiatric disorders show localized dysfunction in specific cortical regions. The mechanisms underlying such region-specific vulnerabilities are unknown. Post-mortem analyses have demonstrated a selective reduction in the expression of parvalbumin (PV) in GABAergic interneurons in the frontal rather than the sensory cortex of patients with neuropsychiatric disorders such as schizophrenia, autism spectrum disorders, and bipolar disorders. PV neurons are surrounded by perineuronal nets (PNNs), and are protected from oxidative stress...
July 16, 2017: Neuroscience
https://www.readbyqxmd.com/read/28715242/not-all-masks-are-created-equal-masking-success-in-clinical-trials-of-children-and-adolescents
#20
Lauren Jones, Sarah R Black, L Eugene Arnold, Mary A Fristad
The current study assessed the success of masking omega-3 (Ω3) and psychotherapy in clinical trials of youth with depression or bipolar spectrum disorder. Participants were youth ages 7-14 with DSM-IV-TR diagnosed depressive (n = 72) or bipolar spectrum (n = 23) disorders. Inclusion diagnoses were depressive disorder, cyclothymic disorder, or bipolar disorder not otherwise specified. Exclusion diagnoses included bipolar I or II disorder, chronic medical condition or autism. Youth participated in 2 × 2 randomized controlled trials, in which they received Ω3 or placebo (PBO) and psychoeducational psychotherapy (PEP) or active monitoring (AM)...
July 17, 2017: Journal of Clinical Child and Adolescent Psychology
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