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https://www.readbyqxmd.com/read/28521253/differences-in-cognitive-deficits-in-individuals-with-subthreshold-syndromes-with-and-without-family-history-of-bipolar-disorder
#1
Kangguang Lin, Rui Lu, Kun Chen, Ting Li, Weicong Lu, Jiehua Kong, Guiyun Xu
Little is known about the development of cognitive deficits prior to the official onset of bipolar disorder (BP). The aim of this study was to investigate neurocognitive performance in two early stages of BP. This high-risk design study recruited a group of offspring of parents with BP (n = 58), aged 8-28 years. Based on the subthreshold syndromes, the "unaffected" offspring were further divided into high-risk (HR) and ultra-high-risk (UHR) stages. For comparison, a group of individuals with subthreshold symptoms but without family history of psychiatric disorder (n = 17) and 48 healthy controls (HCs) were included...
May 10, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28501741/executive-functioning-deficits-among-adults-with-bipolar-disorder-types-i-and-ii-a-systematic-review-and-meta-analysis
#2
REVIEW
Tania Dickinson, Rodrigo Becerra, Jacqui Coombes
BACKGROUND: Executive functioning (EF) deficits contribute to a significant proportion of the burden of disease associated with bipolar disorder (BD). Yet, there is still debate in the literature regarding the exact profile of executive functioning in BD. The purpose of the present project was to assess whether EF deficits exist among adults suffering BD, and whether these deficits (if apparent) differ by BD subtype. METHODS: A systematic search identified relevant literature...
April 29, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28494468/genes-involved-in-neurodevelopment-neuroplasticity-and-bipolar-disorder-cacna1c-chrna1-and-mapk1
#3
Marco Calabrò, Laura Mandelli, Concetta Crisafulli, Antonella Sidoti, Tae-Youn Jun, Soo-Jung Lee, Changsu Han, Ashwin A Patkar, Prakash S Masand, Chi-Un Pae, Alessandro Serretti
BACKGROUND: Bipolar disorder (BPD) is a common and severe mental disorder. The involvement of genetic factors in the pathophysiology of BPD is well known. In the present study, we tested the association of several single-nucleotide polymorphisms (SNPs) within 3 strong candidate genes (CACNA1C, CHRNA7, and MAPK1) with BPD. These genes are involved in monoamine-related pathways, as well as in dendrite development, neuronal survival, synaptic plasticity, and memory/learning. METHODS: One hundred and thirty-two subjects diagnosed with BPD and 326 healthy controls of Korean ancestry were genotyped for 40 SNPs within CACNA1C, CHRNA17, and MAPK1...
May 12, 2017: Neuropsychobiology
https://www.readbyqxmd.com/read/28493605/adverse-effects-of-obesity-on-cognitive-functions-in-individuals-at-ultra-high-risk-for-bipolar-disorder-results-from-the-global-mood-and-brain-science-initiative
#4
Roger S McIntyre, Rodrigo B Mansur, Yena Lee, Letícia Japiassú, Kun Chen, Rui Lu, Weicong Lu, Xiaodong Chen, Ting Li, Guiyun Xu, Kangguang Lin
BACKGROUND: The burden of illness associated with bipolar disorder (BD) warrants early pre-emption/prevention. Prediction models limited to psychiatric phenomenology have insufficient predictive power. Herein, we aimed to evaluate whether the presence of overweight/obesity is associated with greater cognitive decline in individuals at high risk (HR) or ultra high risk (UHR) for BD. METHODS: We conducted a retrospective analysis to investigate the moderational role of body mass index (BMI) on measures of cognitive function...
March 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28491042/disentangling-working-memory-functioning-in-mood-states-of-bipolar-disorder-a-systematic-review
#5
REVIEW
Carolina Soraggi-Frez, Flávia H Santos, Pedro B Albuquerque, Leandro F Malloy-Diniz
Working memory (WM) deficits are often reported in patients with Bipolar Disorder (BD). However, it is not clear about the nature of these WM deficits (update or serial order processes) and their association with each BD states (euthymic, mania, and depressive). This review investigated the association between BD patient's states and the functioning of WM components. For this purpose, we carried out a systematic review fulfilling a search in the databases Medline, Scopus, SciELO, and Web of Science using specific terms in the abstracts of the articles that generated 212 outcomes in the restricted period from 2005 to 2016...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28483271/-mindful-neuropsychology-mindfulness-based-cognitive-remediation
#6
E Bulzacka, S Lavault, A Pelissolo, C Bagnis Isnard
OBJECTIVES: Mindfulness based interventions (MBI) have recently gained much interest in western medicine. MBSR paradigm is based on teaching participants to pay complete attention to the present experience and act nonjudgmentally towards stressful events. During this mental practice the meditator focuses his or her attention on the sensations of the body. While the distractions (mental images, thoughts, emotional or somatic states) arise the participant is taught to acknowledge discursive thoughts and cultivate the state of awareness without immediate reaction...
May 5, 2017: L'Encéphale
https://www.readbyqxmd.com/read/28482311/tryptophan-breakdown-and-cognition-in-bipolar-disorder
#7
Martina Platzer, Nina Dalkner, Frederike T Fellendorf, Armin Birner, Susanne A Bengesser, Robert Queissner, Nora Kainzbauer, René Pilz, Simone Herzog-Eberhard, Carlo Hamm, Christa Hörmanseder, Alexander Maget, Philipp Rauch, Harald Mangge, Dietmar Fuchs, Sieglinde Zelzer, Gregor Schütze, Natalie Moll, Markus J Schwarz, Rodrigo B Mansur, Roger S McIntyre, Eva Z Reininghaus
INTRODUCTION: It has been demonstrated that bipolar disorder (BD) is often accompanied by cognitive deficits across all subdomains including verbal memory, attention and executive functioning. Cognitive deficits are observed both during episodes of mania or depression, as well as during the euthymic phase. It has been proposed that chronic immune-mediated inflammation in the central nervous system results in alterations in neural structures that subserve cognitive function. Kynurenine is an intermediate in the inflammatory cascade and can be peripherally measured to proxy inflammatory activity...
April 27, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28476208/transcriptome-alterations-in-prefrontal-pyramidal-cells-distinguish-schizophrenia-from-bipolar-and-major-depressive-disorders
#8
Dominique Arion, Zhiguang Huo, John F Enwright, John P Corradi, George Tseng, David A Lewis
BACKGROUND: Impairments in certain cognitive processes (e.g., working memory) are typically most pronounced in schizophrenia (SZ), intermediate in bipolar disorder, and least in major depressive disorder. Given that working memory depends, in part, on neural circuitry that includes pyramidal cells in layer 3 (L3) and layer 5 (L5) of the dorsolateral prefrontal cortex (DLPFC), we sought to determine if transcriptome alterations in these neurons were shared or distinctive for each diagnosis...
April 4, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28459548/addressable-direct-write-nanoscale-filament-formation-and-dissolution-by-nanoparticle-mediated-bipolar-electrochemistry
#9
Garrison M Crouch, Donghoon Han, Susan K Fullerton-Shirey, David B Go, Paul W Bohn
Nanoscale conductive filaments, usually associated with resistive memory or memristor technology, may also be used for chemical sensing and nanophotonic applications; however, realistic implementation of the technology requires precise knowledge of the conditions that control the formation and dissolution of filaments. Here we describe and characterize an addressable direct-write nanoelectrochemical approach to achieve repeatable formation/dissolution of Ag filaments across a ∼100 nm poly(ethylene oxide) (PEO) film containing either Ag(+) alone or Ag(+) together with 50 nm Ag-nanoparticles acting as bipolar electrodes...
May 4, 2017: ACS Nano
https://www.readbyqxmd.com/read/28452409/ketamine-versus-midazolam-in-bipolar-depression-with-suicidal-thoughts-a-pilot-midazolam-controlled-randomized-clinical-trial
#10
Michael F Grunebaum, Steven P Ellis, John G Keilp, Vivek K Moitra, Thomas B Cooper, Julia E Marver, Ainsley K Burke, Matthew S Milak, M Elizabeth Sublette, Maria A Oquendo, J John Mann
OBJECTIVES: To evaluate feasibility and effects of a sub-anesthetic infusion dose of ketamine versus midazolam on suicidal ideation in bipolar depression. Neurocognitive, blood and saliva biomarkers were explored. METHODS: Sixteen participants with bipolar depression and a Scale for Suicidal Ideation (SSI) score of ≥4 were randomized to ketamine (0.5 mg/kg) or midazolam (0.02 mg/kg). Current pharmacotherapy was maintained excluding benzodiazepines within 24 hours...
April 28, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28449391/flexible-semitransparent-and-inorganic-resistive-memory-based-on-bati0-95-co0-05-o3-film
#11
Yuxi Yang, Guoliang Yuan, Zhibo Yan, Yaojin Wang, Xubing Lu, Jun-Ming Liu
Perovskite ceramics and single crystals are commonly hard and brittle due to their small maximum elastic strain. Here, large-scale BaTi0.95 Co0.05 O3 (BTCO) film with a SrRuO3 (SRO) buffered layer on a 10 µm thick mica substrate is flexible with a small bending radius of 1.4 mm and semitransparent for visible light at wavelengths of 500-800 nm. Mica/SRO/BTCO/Au cells show bipolar resistive switching and the high/low resistance ratio is up to 50. The resistive-switching properties show no obvious changes after the 2...
April 27, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28443901/roles-of-conducting-filament-and-non-filament-regions-in-the-ta2o5-and-hfo2-resistive-switching-memory-for-switching-reliability
#12
Tae Hyung Park, Hae Jin Kim, Woo Young Park, Soo Gil Kim, Byung Joon Choi, Cheol Seong Hwang
The endurance of switching cycles, which is a critical measure of device reliability, in an ultra-thin (1.5 nm) Ta2O5 and HfO2 resistive random access (ReRAM) memory cell with a 28 nm lateral dimension was studied using current-voltage (I-V) sweep and closed-loop pulse switching (CLPS) tests. The two devices showed the typical oxygen-deficient conducting-filament (CF)-mediated bipolar resistance switching behaviour, which was induced by the asymmetric electrode configuration: Ta as the oxygen vacancy (VO) source/reservoir and TiN as the inert electrode...
May 11, 2017: Nanoscale
https://www.readbyqxmd.com/read/28442424/thioredoxin-is-not-a-marker-for-treatment-resistance-depression-but-associated-with-cognitive-function-an-rtms-study
#13
Efruz Pirdogan Aydın, Abdullah Genc, Mihriban Dalkıran, Ece Türkyilmaz Uyar, Ömer Akil Özer, Kayıhan Oğuz Karamustafalıoğlu
Elevated oxidative stress is known to play an important role in development of depression and cognitive dysfunction. To date, thioredoxin (TRX), an antioxidant protein, has been investigated as a marker for psychiatric disorders such as schizophrenia, bipolar disorder and autism but its relationship with depression is yet to be unknown. The aim of this study is to detect the TRX levels in patients with treatment-resistant depression (TRD), analyse the effect of rTMS (repetitive transcranial magnetic stimulation) application on TRX levels and display the relationship of TRX with cognitive areas...
April 22, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28437438/use-of-the-matrics-consensus-cognitive-battery-mccb-to-evaluate-cognitive-deficits-in-bipolar-disorder-a-systematic-review-and-meta-analysis
#14
Qijing Bo, Zhen Mao, Xianbin Li, Zhimin Wang, Chuanyue Wang, Xin Ma
BACKGROUND: The Measurement and Treatment Research to Improve Cognition Schizophrenia Consensus Cognitive Battery (MCCB) has also been proposed for use in clinical trials to assess cognitive deficits in patients with bipolar disorder (BD). The aim of this study was to evaluate cognitive function assessed by the MCCB in BD. METHODS: A literature search of the PubMed, Embase, PsycINFO, SCI, Cochrane Library databases and the Cochrane Controlled Trials Register was conducted...
2017: PloS One
https://www.readbyqxmd.com/read/28435979/oxytocin-system-in-neuropsychiatric-disorders-old-concept-new-insights
#15
Afzal Misrani, Sidra Tabassum, Cheng Long
Oxytocin (OXT) is a neuropeptide that plays a pivotal role among species peripherally and centrally. It recently has attracted much attention for its involvement in anxiety-related behavior, stress regulation, social behavior and various neuropsychiatric disorders. OXT is one of the important mediators of emotional and social behaviors such as maternal behavior, fear extinction, social support, happiness, and trust. It is also involved in learning and memory process. The recent progresses in OXT system have put this neuropeptide as an important psychotherapeutic intervention for various psychiatric disorders such as stress, anxiety disorders, social phobia, postpartum depression, bipolar disorder, autism, and schizophrenia...
April 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28435942/bipolar-resistive-switching-with-negative-differential-resistance-effect-in-a-cu-batio3-ag-device
#16
L J Wei, Y Yuan, J Wang, H Q Tu, Y Gao, B You, J Du
We demonstrate that a bipolar non-volatile resistive switching behaviour with negative differential resistance (NDR) effect is realized in a Cu/BaTiO3/Ag device, which was deposited on a Si substrate via magnetron sputtering equipment. We suggest that the bipolar resistive switching is dominated by the trapping/detrapping of electrons at the BaTiO3-Cu interface. In addition, we demonstrate that the device exhibits good performance, including a large on/off ratio, high reliability and long retention time. Therefore, BaTiO3 may become a good candidate for application in resistive switching random access memory (RRAM) devices...
May 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28433073/neurocognitive-function-in-clinically-stable-individuals-with-long-term-bipolar-i-disorder-comparisons-with-schizophrenia-patients-and-controls
#17
Pei-Yun Lin, Peng-Wei Wang, Cheng-Sheng Chen, Cheng-Fang Yen
This study compared the levels of the five domains of neurocognitive function-executive function, attention, memory, verbal comprehension, and perceptual organization-among clinically stable individuals with long-term bipolar I disorder, individuals with long-term schizophrenia, and a group of controls. We recruited a total of 93 clinically stable individuals with bipolar I disorder, 94 individuals with schizophrenia, and 106 controls in this study. Their neurocognitive function was measured using a series of neurocognitive function tests: the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III), Line Cancellation Test, Visual Form Discrimination, Controlled Oral Word Association Test, Wisconsin Card Sorting Test, Continuous Performance Task, and Wechsler Memory Scale-Third Edition...
May 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28421717/cognitive-profiles-in-euthymic-patients-with-bipolar-disorders-results-from-the-face-bd-cohort
#18
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/28420238/the-role-of-ti-buffer-layer-thickness-on-the-resistive-switching-properties-of-hafnium-oxide-based-resistive-switching-memories
#19
Sk Ziaur Rahaman, Yu-De Lin, Heng-Yuan Lee, Yu-Sheng Chen, Pang-Shiu Chen, Wei-Su Chen, Chien-Hua Hsu, Kan-Hsueh Tsai, Ming-Jinn Tsai, Pei-Hua Wang
Ti/HfOx-based resistive random access memory (RRAM) has been extensively investigated as an emerging nonvolatile memory (NVM) candidate due to its excellent memory performance and CMOS process compatibility. Although the importance of the role of the Ti buffer layer is well recognized, detailed understanding about the nature of Ti thickness-dependent asymmetric switching is still missing. To realize this, the present work addresses the effects of Ti buffer layer thickness on the switching properties of TiN/Ti/HfOx/TiN 1T1R RRAM...
May 1, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28419772/visual-memory-uniquely-predicts-anhedonia-in-schizophrenia-but-not-bipolar-disorder
#20
Anjuli S Bodapati, Lisanne M Jenkins, Rajiv P Sharma, Cherise Rosen
OBJECTIVE: Deficits in memory have been suggested as an influential mechanism of anhedonia, because while pleasant experiences may be enjoyed in-the-moment, the cognitive processes involved in reporting anticipated or remembered enjoyable experiences is thought to be impaired. This study will determine whether any aspects of memory, including visual memory, verbal memory or working memory, are significantly predictive of anhedonia in a sample of schizophrenia, psychotic bipolar disorder and healthy controls...
April 17, 2017: Journal of Neuropsychology
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