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Journal of Psychiatry & Neuroscience: JPN

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https://www.readbyqxmd.com/read/29083990/always-on-guard-emotion-regulation-in-women-with-borderline-personality-disorder-compared-to-nonpatient-controls-and-patients-with-cluster-c-personality-disorder
#1
Linda van Zutphen, Nicolette Siep, Gitta A Jacob, Gregor Domes, Andreas Sprenger, Bastian Willenborg, Rainer Goebel, Arnoud Arntz
BACKGROUND: Borderline personality disorder (BPD) is characterized by emotion dysregulation; however, it is unclear whether this is restricted to negative emotional stimuli or to what degree this is specific to BPD. We investigated neural correlates of hypothesized increased emotional sensitivity and impaired emotion regulation in patients with BPD. METHODS: During fMRI scanning, patients with BPD, nonpatient controls and patients with cluster-C personality disorder completed an emotion regulation task, including negative, positive and erotic social pictures...
October 30, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29077553/greater-body-mass-index-is-associated-with-reduced-frontal-cortical-volumes-among-adolescents-with-bipolar-disorder
#2
Alvi H Islam, Arron W S Metcalfe, Bradley J MacIntosh, Daphne J Korczak, Benjamin I Goldstein
BACKGROUND: Higher body mass index (BMI) and obesity is common among youth with bipolar disorder (BD) and is associated with greater psychiatric illness severity, including suicidality. Obesity has been associated with frontal, temporal and subcortical volumetric reductions in adults with BD. We examined the neurostructural correlates of BMI in adolescents early in their course of BD. METHODS: We processed T1-weighted images of adolescents with BD and psychiatrically healthy controls using FreeSurfer to derive a priori region of interest (ROI) volumes/cortical thickness for the frontal lobe (FL), prefrontal cortex (PFC) and orbitofrontal cortex (OFC) as well as volumes for the amygdala and hippocampus...
October 27, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29035174/in-male-rats-the-ability-of-central-insulin-to-suppress-glucose-production-is-impaired-by-olanzapine-whereas-glucose-uptake-is-left-intact
#3
Chantel Kowalchuk, Celine Teo, Virginia Wilson, Araba Chintoh, Loretta Lam, Sri Mahavir Agarwal, Adria Giacca, Gary J Remington, Margaret K Hahn
BACKGROUND: Insulin receptors are widely expressed in the brain and may represent a crossroad between metabolic and cognitive disorders. Although antipsychotics, such as olanzapine, are the cornerstone treatment for schizophrenia, they are associated with high rates of type 2 diabetes and lack efficacy for illness-related cognitive deficits. Historically, this risk of diabetes was attributed to the weight gain propensity of antipsychotics, but recent work suggests antipsychotics can have weight-independent diabetogenic effects involving unknown brain-mediated mechanisms...
October 16, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29022873/adolescent-thc-exposure-in-female-rats-leads-to-cognitive-deficits-through-a-mechanism-involving-chromatin-modifications-in-the-prefrontal-cortex
#4
Pamela Prini, Franceso Rusconi, Erica Zamberletti, Marina Gabaglio, Federica Penna, Mauro Fasano, Elena Battaglioli, Daniela Parolaro, Tiziana Rubino
BACKGROUND: Increasing cannabis consumption among adolescents, studies that link its early use with mental illnesses, and the political debate on cannabis legalization together call for an urgent need to study molecular underpinnings of adolescent brain vulnerability. The emerging role of epigenetic mechanisms in psychiatric diseases led us to hypothesize that epigenetic alterations could play a role in causes and subsequent development of the depressive/psychotic-like phenotype induced by adolescent, but not adult, Δ9-tetrahydrocannabinol (THC) exposure in female rats...
October 12, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29022872/arterial-stiffness-is-associated-with-depression-in-middle-aged-men-the-maastricht-study
#5
Veronica Onete, Ronald M Henry, Simone J S Sep, Annemarie Koster, Carla J van der Kallen, Pieter C Dagnelie, Nicolaas Schaper, Sebastian Köhler, Koen Reesink, Coen D A Stehouwer, Miranda T Schram
BACKGROUND: Arterial stiffening may underlie the association between depression and cardiovascular disease (CVD), but reported data are inconsistent. We investigated the associations between aortic stiffness and major depressive disorder (MDD) and depressive symptoms, and whether these differed by sex and age. METHODS: We measured carotid to femoral pulse wave velocity (cfPWV) using applanation tonometry, and we assessed depression using the Mini-International Neuropsychiatric Interview (MINI) and the Patient Health Questionnaire-9 (PHQ-9) in a cohort of participants from The Maastricht Study...
October 12, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29022871/a-postmortem-analysis-of-nmda-ionotropic-and-group-1-metabotropic-glutamate-receptors-in-the-nucleus-accumbens-in-schizophrenia
#6
Jeremy S Lum, Samuel J Millard, Xu-Feng Huang, Lezanne Ooi, Kelly A Newell
BACKGROUND: The nucleus accumbens (NAcc) has been implicated in the pathology and treatment of schizophrenia. Recent postmortem evidence suggests a hyperglutamatergic state in the NAcc. With the present study we aimed to explore possible glutamatergic alterations in the NAcc of a large schizophrenia cohort. METHODS: We performed immunoblots on postmortem NAcc samples from 30 individuals who had schizophrenia and 30 matched controls. We examined the protein expression of primary glutamatergic receptors, including the N-methyl-D-aspartate (NMDA) receptor (NR1, NR2A and NR2B subunits) and the group 1 metabotropic glutamate receptor (mGluR1 and mGluR5; dimeric and monomeric forms)...
October 6, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28968199/meta-analysis-of-central-and-peripheral-%C3%AE-aminobutyric-acid-levels-in-patients-with-unipolar-and-bipolar-depression
#7
Bruno Romeo, Walid Choucha, Philippe Fossati, Jean-Yves Rotge
BACKGROUND: Many studies have measured central and peripheral γ-aminobutyric acid (GABA) levels in patients with depression. We performed a meta-analysis to provide an objective overview of GABA changes in those with unipolar or bipolar depression. METHODS: After a systematic database search, original data were extracted with the help of seminal authors to calculate standardized mean differences. We compared GABA levels between patients with current major depressive episodes and controls, between euthymic patients and controls, and in patients before and after treatment...
October 2, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28968198/mindfulness-based-treatments-for-posttraumatic-stress-disorder-a-review-of-the-treatment-literature-and-neurobiological-evidence
#8
Jenna E Boyd, Ruth A Lanius, Margaret C McKinnon
Mindfulness-based treatments for posttraumatic stress disorder (PTSD) have emerged as promising adjunctive or alternative intervention approaches. A scoping review of the literature on PTSD treatment studies, including approaches such as mindfulness-based stress reduction, mindfulness-based cognitive therapy and metta mindfulness, reveals low attrition with medium to large effect sizes. We review the convergence between neurobiological models of PTSD and neuroimaging findings in the mindfulness literature, where mindfulness interventions may target emotional under- and overmodulation, both of which are critical features of PTSD symptomatology...
October 2, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28949288/disrupted-coupling-of-large-scale-networks-is-associated-with-relapse-behaviour-in-heroin-dependent-men
#9
Qiang Li, Jierong Liu, Wei Wang, Yarong Wang, Wei Li, Jiajie Chen, Jia Zhu, Xuejiao Yan, Yongbin Li, Zhe Li, Jianjun Ye, Wei Wang
BACKGROUND: It is unknown whether impaired coupling among 3 core large-scale brain networks (salience [SN], default mode [DMN] and executive control networks [ECN]) is associated with relapse behaviour in treated heroin-dependent patients. METHODS: We conducted a prospective resting-state functional MRI study comparing the functional connectivity strength among healthy controls and heroin-dependent men who had either relapsed or were in early remission. Men were considered to be either relapsed or in early remission based on urine drug screens during a 3-month follow-up period...
September 26, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28949287/cardiorespiratory-concerns-shape-brain-responses-during-automatic-panic-related-scene-processing-in-patients-with-panic-disorder
#10
Katharina Feldker, Carina Yvonne Heitmann, Paula Neumeister, Leonie Brinkmann, Maximillan Bruchmann, Pienie Zwitserlood, Thomas Straube
BACKGROUND: Increased automatic processing of threat-related stimuli has been proposed as a key element in panic disorder. Little is known about the neural basis of automatic processing, in particular to task-irrelevant, panic-related, ecologically valid stimuli, or about the association between brain activation and symptomatology in patients with panic disorder. METHODS: The present event-related fMRI study compared brain responses to task-irrelevant, panic-related and neutral visual stimuli in medication-free patients with panic disorder and healthy controls...
September 26, 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29083298/treatment-of-adhd-in-patients-with-bipolar-disorder
#11
Rachel Girard, Ridha Joober
No abstract text is available yet for this article.
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29083297/in-male-rats-the-ability-of-central-insulin-to-suppress-glucose-production-is-impaired-by-olanzapine-whereas-glucose-uptake-is-left-intact
#12
Chantel Kowalchuk, Celine Teo, Virginia Wilson, Araba Chintoh, Loretta Lam, Sri Mahavir Agarwal, Adria Giacca, Gary J Remington, Margaret K Hahn
BACKGROUND: Insulin receptors are widely expressed in the brain and may represent a crossroad between metabolic and cognitive disorders. Although antipsychotics, such as olanzapine, are the cornerstone treatment for schizophrenia, they are associated with high rates of type 2 diabetes and lack efficacy for illness-related cognitive deficits. Historically, this risk of diabetes was attributed to the weight gain propensity of antipsychotics, but recent work suggests antipsychotics can have weight-independent diabetogenic effects involving unknown brain-mediated mechanisms...
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29083296/the-value-of-a-skeptical-approach-to-neurosciences-in-psychiatric-training-and-practice
#13
Alexandru Traicu, Ridha Joober
No abstract text is available yet for this article.
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28949286/altered-intrinsic-functional-brain-architecture-in-female-patients-with-bulimia-nervosa
#14
Li Wang, Qing-Mei Kong, Ke Li, Xue-Ni Li, Ya-Wei Zeng, Chao Chen, Ying Qian, Shi-Jie Feng, Ji-Tao Li, Yun'Ai Su, Christoph U Correll, Philip B Mitchell, Chao-Gan Yan, Da-Rong Zhang, Tian-Mei Si
BACKGROUND: Bulimia nervosa is a severe psychiatric syndrome with uncertain pathogenesis. Neural systems involved in sensorimotor and visual processing, reward and impulsive control may contribute to the binge eating and purging behaviours characterizing bulimia nervosa. However, little is known about the alterations of functional organization of whole brain networks in individuals with this disorder. METHODS: We used resting-state functional MRI and graph theory to characterize functional brain networks of unmedicated women with bulimia nervosa and healthy women...
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28832321/structural-alterations-in-patients-with-obsessive-compulsive-disorder-a-surface-based-analysis-of-cortical-volume-surface-area-and-thickness
#15
Oana Georgiana Rus, Tim Jonas Reess, Gerd Wagner, Michael Zaudig, Claus Zimmer, Kathrin Koch
BACKGROUND: Mounting evidence indicates the presence of structural brain alterations in individuals with obsessive-compulsive disorder (OCD). Findings are, however, rather heterogeneous, which may be partly because of differences in methodological approaches or clinical sample characteristics. The aim of the present study was to analyze the whole brain cortical volume, surface area and thickness in a large sample of patients with OCD compared with age- and sex-matched healthy controls...
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28832320/refinement-by-integration-aggregated-effects-of-multimodal-imaging-markers-on-adult-adhd
#16
Thomas Wolfers, Alberto Llera Arenas, A Marten H Onnink, Janneke Dammers, Martine Hoogman, Marcel P Zwiers, Jan K Buitelaar, Barbara Franke, Andre F Marquand, Christian F Beckmann
BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is biologically heterogeneous, with different biological predispositions - mediated through developmental processes - converging upon a common clinical phenotype. Brain imaging studies have variably shown altered brain structure, activity and connectivity in children and adults with ADHD. Recent methodological developments allow for the integration of information across imaging modalities, potentially yielding a more coherent view regarding the biology underlying the disorder...
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28832319/uncertainty-exposure-causes-behavioural-sensitization-and-increases-risky-decision-making-in-male-rats-toward-modelling-gambling-disorder
#17
Fiona D Zeeb, Zhaoxia Li, Daniel C Fisher, Martin H Zack, Paul J Fletcher
BACKGROUND: An animal model of gambling disorder, previously known as pathological gambling, could advance our understanding of the disorder and help with treatment development. We hypothesized that repeated exposure to uncertainty during gambling induces behavioural and dopamine (DA) sensitization - similar to chronic exposure to drugs of abuse. Uncertainty exposure (UE) may also increase risky decision-making in an animal model of gambling disorder. METHODS: Male Sprague Dawley rats received 56 UE sessions, during which animals responded for saccharin according to an unpredictable, variable ratio schedule of reinforcement (VR group)...
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28632120/basolateral-amygdala-ventromedial-prefrontal-cortex-connectivity-predicts-cognitive-behavioural-therapy-outcome-in-adults-with-obsessive-compulsive-disorder
#18
Miquel A Fullana, Xi Zhu, Pino Alonso, Narcís Cardoner, Eva Real, Clara López-Solà, Cinto Segalàs, Marta Subirà, Hanga Galfalvy, José M Menchón, H Blair Simpson, Rachel Marsh, Carles Soriano-Mas
BACKGROUND: Cognitive behavioural therapy (CBT), including exposure and ritual prevention, is a first-line treatment for obsessive-compulsive disorder (OCD), but few reliable predictors of CBT outcome have been identified. Based on research in animal models, we hypothesized that individual differences in basolateral amygdala-ventromedial prefrontal cortex (BLA-vmPFC) communication would predict CBT outcome in patients with OCD. METHODS: We investigated whether BLA-vmPFC resting-state functional connectivity (rs-fc) predicts CBT outcome in patients with OCD...
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28375076/intranetwork-and-internetwork-connectivity-in-patients-with-alzheimer-disease-and-the-association-with-cerebrospinal-fluid-biomarker-levels
#19
Marina Weiler, Brunno Machado de Campos, Camila Vieira de Ligo Teixeira, Raphael Fernandes Casseb, Ana Flávia Mac Knight Carletti-Cassani, Jéssica Elias Vicentini, Thamires Naela Cardoso Magalhães, Leda Leme Talib, Orestes Vicente Forlenza, Marcio Luiz Figueredo Balthazar
BACKGROUND: In the last decade, many studies have reported abnormal connectivity within the default mode network (DMN) in patients with Alzheimer disease. Few studies, however, have investigated other networks and their association with pathophysiological proteins obtained from cerebrospinal fluid (CSF). METHODS: We performed 3 T imaging in patients with mild Alzheimer disease, patients with amnestic mild cognitive impairment (aMCI) and healthy controls, and we collected CSF samples from the patients with aMCI and mild Alzheimer disease...
November 2017: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/28834530/treating-delayed-sleep-wake-phase-disorder-in-young-adults
#20
Diane B Boivin
No abstract text is available yet for this article.
September 2017: Journal of Psychiatry & Neuroscience: JPN
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