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https://www.readbyqxmd.com/read/29163018/brain-networks-implicated-in-seasonal-affective-disorder-a-neuroimaging-pet-study-of-the-serotonin-transporter
#1
Martin Nørgaard, Melanie Ganz, Claus Svarer, Patrick M Fisher, Nathan W Churchill, Vincent Beliveau, Cheryl Grady, Stephen C Strother, Gitte M Knudsen
Background: Seasonal Affective Disorder (SAD) is a subtype of Major Depressive Disorder characterized by seasonally occurring depression that often presents with atypical vegetative symptoms such as hypersomnia and carbohydrate craving. It has recently been shown that unlike healthy people, patients with SAD fail to globally downregulate their cerebral serotonin transporter (5-HTT) in winter, and that this effect seemed to be particularly pronounced in female S-carriers of the 5-HTTLPR genotype. The purpose of this study was to identify a 5-HTT brain network that accounts for the adaption to the environmental stressor of winter in females with the short 5-HTTLPR genotype, a specific subgroup previously reported to be at increased risk for developing SAD...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29160620/dna-methylation-of-mb-comt-in-malaysian-schizophrenia-patients
#2
Abd Rahim Nour El Huda, Ku Zaifah Norsidah, Rahim Mohd Nabil Fikri, Mohd Noor Hanisah, Abdullah Kartini, A Talib Norlelawati
AIM: This study examined catechol-O-methyltransferase (COMT) DNA methylation in the peripheral blood of schizophrenia patients and also in healthy controls to investigate its potential use as a peripheral biomarker of schizophrenia and its relationships with the clinical variables of schizophrenia patients. METHODS: We examined the DNA methylation levels of COMT using genomic DNA from the peripheral blood of schizophrenia patients (n = 138) and healthy control participants (n = 132); all were Malaysian Malays...
November 21, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29154612/alexithymia-is-associated-with-a-multidomain-multidimensional-failure-of-interoception-evidence-from-novel-tests
#3
Jennifer Murphy, Caroline Catmur, Geoffrey Bird
Interoception, the perception of the body's internal state, contributes to numerous aspects of higher-order cognition. Several theories suggest a causal role for atypical interoception in specific psychiatric disorders, including a recent claim that atypical interoception represents a transdiagnostic impairment across disorders characterized by reduced perception of one's own emotion (alexithymia). Such theories are supported predominantly by evidence from only one interoceptive domain (cardiac); however, evidence of domain-specific interoceptive ability highlights the need to assess interoception in noncardiac domains...
November 20, 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/29151193/disturbances-of-diurnal-phase-markers-behavior-and-clock-genes-in-a-rat-model-of-depression-modulatory-effects-of-agomelatine-treatment
#4
K Højgaard, S L Christiansen, E V Bouzinova, O Wiborg
Major depressive disorder (MDD) is a growing problem worldwide. Though, the etiology remains unresolved, circadian rhythm disturbances are frequently observed in MDD and thus is speculated to play a key role herein. The present study focuses on circadian rhythm disturbances in the chronic mild stress (CMS) animal model of depression and examined whether the atypical antidepressant, agomelatine, which is mediating its action via melatonergic and serotonergic receptors, is capable of resynchronizing the perturbed rhythm...
November 19, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29150144/atypical-depression-and-non-atypical-depression-is-hpa-axis-function-a-biomarker-a-systematic-review
#5
REVIEW
Mario F Juruena, Mariia Bocharova, Bruno Agustini, Allan H Young
BACKGROUND: The link between the abnormalities of the Hypothalamic-pituitary-adrenal (HPA) axis and depression has been one of the most consistently reported findings in psychiatry. At the same time, multiple studies have demonstrated a stronger association between the increased activation of HPA-axis and melancholic, or endogenous depression subtype. This association has not been confirmed for the atypical subtype, and some researchers have suggested that as an antinomic depressive subtype, it may be associated with the opposite type, i...
October 6, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29137178/antidepressants-and-mood-stabilizers-novel-research-avenues-and-clinical-insights-for-bipolar-depression
#6
REVIEW
In Hee Shim, Young Sup Woo, Moon-Doo Kim, Won-Myong Bahk
The concept of the bipolar-spectrum and of mixed features being a bridge between major depressive disorders and bipolar disorders (BDs) has become increasingly important in mood-disorder diagnoses. Under these circumstances, antidepressants (ADs) and mood stabilizers (MSs) should be used with caution in the treatment of major depressive episodes (MDEs) and to obtain long-term stability in BDs. Before treating MDEs, screening tools, specific symptom evaluation and medical history should be used to distinguish between bipolarity and mixed features in patients for whom AD monotherapy may present a risk...
November 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29130372/-motility-psychoses-by-erik-str%C3%A3-mgren-1940
#7
German E Berrios, Johan Schioldann
The motility psychoses are a group of acute psychiatric conditions characterized by salient disorders of movement (increased, decreased and disorganized), psychotic experiences, confusion and good prognosis. The debate on whether they are just atypical forms of schizophrenia or manic-depressive insanity or constitute an independent group of psychoses has not yet been settled. Erik Strömgren's classical chapter deals with the history and clinical aspects of the motility psychoses. Based on a historical analysis and an empirical study of a patient cohort, the author draws conclusions on the nature of this clinical group that has stood the test of time well...
December 2017: History of Psychiatry
https://www.readbyqxmd.com/read/29129723/neural-correlates-of-impaired-self-regulation-in-male-youths-with-autism-spectrum-disorder-a-voxel-based-morphometry-study
#8
Hsing-Chang Ni, Hsiang-Yuan Lin, Wen-Yih Isaac Tseng, Yen-Nan Chiu, Yu-Yu Wu, Wen-Che Tsai, Susan Shur-Fen Gau
Although recent studies revealed impaired self-regulation (dysregulation) in autism spectrum disorder (ASD), neural correlates of dysregulation and its impacts on autistic neuroanatomy remain unclear. Voxel-based morphometry was applied on structural MRI images in 81 ASD and 61 typically developing (TD) boys aged 7-17years. Dysregulation was defined by the sum of T-scores of Attention, Aggression, and Anxiety/Depression subscales in the Child Behavior Checklist>180. There were 53 and 28 boys in the ASD+Dysregulation and ASD-Dysregulation groups, respectively...
November 9, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29114198/depression-led-pitting-edema-a-rarest-case-presentation
#9
Niraj Khatri Sapkota
Pitting edema is the clinical manifestation generally presented due to long standing, especially during summer in the sun, heavy weight bearing, vasodilatation, or cardio-hepatorenal disease or in rare hypothyroidism, but in atypical case may demonstrates depression with progressive stress, that also shows indication of mild pitting edema. We present a case of a non-alcoholic 42 years divorced male under anti-anxiety medication for 10 years who complained of weight gain almost 10 kg in 30 days duration, less attentive to his work, and always feel sleepiness during day (once get to sleep, slept more than 5 h during day) and also late up to morning if not called to wake-up, also with diminished memory, more specific event was before 60 days of these symptoms he unexpectedly suffered family tragedy suggesting depression led progressive stress pitting edema that got managed after appropriate counseling along with changes in his life style...
November 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/29106959/two-intermediate-states-of-the-conformational-switch-in-dual-specificity-phosphatase-13a
#10
Chun Hwa Wei, Hee Gyeong Min, Myeongbin Kim, Gwan Hee Kim, Ha-Jung Chun, Seong Eon Ryu
Dual specificity phosphatases (DUSPs) include MAP kinase phosphatases and atypical dual specificity phosphatases and mediate cell growth and differentiation, brain function, and immune responses. They serve as targets for drug development against cancers, diabetes and depression. Several DUSPs have non-canonical conformation of the central β-sheet and active site loops, suggesting that they may have conformational switch that is related to the regulation of enzyme activity. Here, we determined the crystal structure of DUSP13a, and identified two different structures that represent intermediates of the postulated conformational switch...
October 26, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29106793/body-mass-index-and-plasma-leptin-in-psychiatric-suicide-attempters
#11
(no author information available yet)
OBJECTIVES: To evaluate body mass index (BMI) and its correlate plasma leptin levels that have been associated with psychiatric morbidity and suicidal behaviour, in relation to clinical features in psychiatric patients after a suicide attempt. METHODS: BMI and plasma leptin were assessed in 198 patients (66 males, age range of 21 to 80 years) who were admitted to the hospital after a suicide attempt, 98 with major depressive disorder, 28 with bipolar disorder, 30 with psychosis, and 42 with personality or adjustment disorder, compared to data of 134 healthy subjects, and evaluated in relation to gender, diagnosis, mode of attempt, and pharmacological treatment before attempt...
October 6, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/29104944/psychotropic-medication-use-in-autism-spectrum-disorders-may-affect-functional-brain-connectivity
#12
Annika C Linke, Lindsay Olson, Yangfeifei Gao, Inna Fishman, Ralph-Axel Müller
Background: Prescription of psychotropic medications is common in autism spectrum disorders (ASDs), either off-label or to treat comorbid conditions such as ADHD or depression. Psychotropic medications are intended to alter brain function. Yet, studies investigating the functional brain organization in ASDs rarely take medication usage into account. This could explain some of the inconsistent findings of atypical brain network connectivity reported in the autism literature. Methods: The current study tested whether functional connectivity patterns, as assessed with functional magnetic resonance imaging (fMRI), differed in a cohort of 49 children and adolescents with ASDs based on psychotropic medication status, and in comparison with 50 matched typically developing (TD) participants...
September 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29102805/from-altered-synaptic-plasticity-to-atypical-learning-a-computational-model-of-down-syndrome
#13
Ángel Eugenio Tovar, Gert Westermann, Alvaro Torres
Learning and memory rely on the adaptation of synaptic connections. Research on the neurophysiology of Down syndrome has characterized an atypical pattern of synaptic plasticity with limited long-term potentiation (LTP) and increased long-term depression (LTD). Here we present a neurocomputational model that instantiates this LTP/LTD imbalance to explore its impact on tasks of associative learning. In Study 1, we ran a series of computational simulations to analyze the learning of simple and overlapping stimulus associations in a model of Down syndrome compared with a model of typical development...
November 2, 2017: Cognition
https://www.readbyqxmd.com/read/29098925/the-world-federation-of-societies-of-biological-psychiatry-wfsbp-guidelines-for-the-biological-treatment-of-bipolar-disorders-acute-and-long-term-treatment-of-mixed-states-in-bipolar-disorder
#14
Heinz Grunze, Eduard Vieta, Guy M Goodwin, Charles Bowden, Rasmus W Licht, Jean-Michel Azorin, Lakshmi Yatham, Sergey Mosolov, Hans-Jürgen Möller, Siegfried Kasper
OBJECTIVES: Although clinically highly relevant, the recognition and treatment of bipolar mixed states has played only an underpart in recent guidelines. This WFSBP guideline has been developed to supply a systematic overview of all scientific evidence pertaining to the acute and long-term treatment of bipolar mixed states in adults. METHODS: Material used for these guidelines is based on a systematic literature search using various data bases. Their scientific rigour was categorised into six levels of evidence (A-F), and different grades of recommendation to ensure practicability were assigned...
November 3, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/29089770/bupropion-interferes-with-the-image-diagnosis-of-parkinson-s-disease
#15
Chieh-Hsin Lin, Hsien-Yuan Lane
Major depressive disorder (MDD) and Parkinson's disease (PD) share symptoms such as tremor. Bupropion, a norepinephrine-dopamine reuptake inhibitor, shows weak dopamine transporter (DAT) occupancy. We report here on a patient with MDD whose hand tremors might have been misdiagnosed as PD by single-photon emission computed tomography (SPECT) under bupropion use. A 66-year-old male patient with MDD had been receiving bupropion 150 mg per day for 6 months. His mood symptoms improved partially with bupropion treatment, however, hand tremors persisted...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29083536/bipolar-disorder-in-pregnancy-a-review-of-pregnancy-outcomes
#16
REVIEW
Debra A Scrandis
INTRODUCTION: Women with bipolar disorder may benefit from continuation of their medications during pregnancy, but there may be risks to the fetus associated with some of these medications. This article examines the evidence relating to the effect of bipolar disorder and pharmacologic treatments for bipolar disorder on pregnancy outcomes. METHODS: MEDLINE, CINAHL, ProQuest Dissertation & Theses, and the Cochrane Database of Systematic Reviews were searched for English-language studies published between 2000 and 2017, excluding case reports and integrative reviews...
October 30, 2017: Journal of Midwifery & Women's Health
https://www.readbyqxmd.com/read/29079491/biological-research-on-burnout-depression-overlap-long-standing-limitations-and-on-going-reflections
#17
Renzo Bianchi, Irvin Sam Schonfeld, Eric Laurent
In this commentary, we discuss seldom-noticed methodological problems affecting biological research on burnout and depression and make recommendations to overcome the limitations of past studies conducted in this area. First, we suggest that identified subtypes of depression (e.g., depression with melancholic features and depression with atypical features) should be taken into account in future biological research on burnout and depression, given that different subtypes of depression have been associated with distinct autonomic and neuroendocrine profiles...
October 25, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29074941/orofacial-pain-an-update-on-diagnosis-and-management
#18
S Ghurye, R McMillan
The diagnosis and management of orofacial pain may be challenging due to complex histories, pathophysiology and associated psychosocial co-morbidities such as depression and anxiety. Neuropathic facial pain conditions such as burning mouth syndrome (BMS), persistent idiopathic facial pain (PIFP), atypical odontalgia (AO) and trigeminal neuralgia (TN) require early recognition by primary care clinicians and referral to secondary care. Acute pain-related temporomandibular disorder (TMD) may be managed in the primary care setting, with identification of those at risk of developing chronic TMD receiving an early referral to secondary care...
December 2017: British Dental Journal
https://www.readbyqxmd.com/read/29057031/plausibility-judgments-of-atypical-symptoms-across-cultures-an-explorative-study-among-western-and-non-western-experts
#19
Irena Boskovic, Douwe van der Heide, Lorraine Hope, Harald Merckelbach, Marko Jelicic
Symptom validity tests (SVTs) are predicated on the assumption that overendorsement of atypical symptoms flags symptom exaggeration (i.e., questionable symptom validity). However, few studies have explored how practitioners from different cultural backgrounds evaluate such symptoms. We asked professionals working in Western (n = 56) and non-Western countries (n = 37) to rate the plausibility of uncommon symptoms taken from the Structured Inventory of Malingered Symptomatology (SIMS), dissociative symptoms from the Dissociative Experience Scale (DES-T), and standard symptoms (e...
2017: Psychological Injury and Law
https://www.readbyqxmd.com/read/29055257/efficacy-of-adjunctive-brexpiprazole-on-the-core-symptoms-of-major-depressive-disorder-a-post-hoc-analysis-of-two-pooled-clinical-studies
#20
J Craig Nelson, Emmanuelle Weiller, Peter Zhang, Catherine Weiss, Mary Hobart
BACKGROUND: Patients with major depressive disorder (MDD) who do not adequately respond to antidepressant treatment (ADT) may benefit from adjunctive atypical antipsychotics; however, certain agents target specific symptoms of depression and not the full syndrome. The aim of this analysis was to examine the effects of brexpiprazole, adjunct to ADT, on the core symptoms of MDD, defined using Montgomery-Åsberg Depression Rating Scale (MADRS) items. METHODS: This was a post hoc analysis of data from two 6-week, randomized, double-blind studies of adjunctive brexpiprazole in patients with MDD and inadequate response to ADTs (n = 1056)...
September 29, 2017: Journal of Affective Disorders
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