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https://www.readbyqxmd.com/read/28635541/association-between-abnormal-brain-functional-connectivity-in-children-and-psychopathology-a-study-based-on-graph-theory-and-machine-learning
#1
João Ricardo Sato, Claudinei Eduardo Biazoli, Giovanni Abrahão Salum, Ary Gadelha, Nicolas Crossley, Gilson Vieira, André Zugman, Felipe Almeida Picon, Pedro Mario Pan, Marcelo Queiroz Hoexter, Edson Amaro, Mauricio Anés, Luciana Monteiro Moura, Marco Antonio Gomes Del'Aquilla, Philip Mcguire, Luis Augusto Rohde, Euripedes Constantino Miguel, Andrea Parolin Jackowski, Rodrigo Affonseca Bressan
OBJECTIVES: One of the major challenges facing psychiatry is how to incorporate biological measures in the classification of mental health disorders. Many of these disorders affect brain development and its connectivity. In this study, we propose a novel method for assessing brain networks based on the combination of a graph theory measure (eigenvector centrality) and a one-class support vector machine (OC-SVM). METHODS: We applied this approach to resting-state fMRI data from 622 children and adolescents...
February 8, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28635496/internet-based-peer-support-for-m%C3%A3-ni%C3%A3-re-s-disease-a-summary-of-web-based-data-collection-impact-evaluation-and-user-evaluation
#2
Ilmari Pyykkő, Vinaya Manchaiah, Hilla Levo, Erna Kentala, Martti Juhola
OBJECTIVE: This paper presents a summary of web-based data collection, impact evaluation, and user evaluations of an Internet-based peer support program for Ménière's disease (MD). DESIGN: The program is written in html-form. The data are stored in a MySQL database and uses machine learning in the diagnosis of MD. The program works interactively with the user and assesses the participant's disorder profile in various dimensions (i.e., symptoms, impact, personal traits, and positive attitude)...
February 9, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28635417/suicide-attempts-among-individuals-with-specific-learning-disorders-an-underrecognized-issue
#3
Esme Fuller-Thomson, Samara Z Carroll, Wook Yang
Several studies have linked specific learning disorders (SLDs) with suicidal ideation, but less is known about the disorders' association with suicide attempts. This gap in the literature is addressed via the 2012 nationally representative Canadian Community Health Survey ( n = 21,744). The prevalence of lifetime suicide attempts among those with an SLD was much higher than those without (11.1% vs. 2.7%, p < .001). In comparison with their peers without SLDs, adults with SLDs had 46% higher odds of having ever attempted suicide, even after adjusting for most known risk factors (e...
June 1, 2017: Journal of Learning Disabilities
https://www.readbyqxmd.com/read/28633346/tetramethylpyrazine-reverses-intracerebroventricular-streptozotocin-induced-memory-deficits-by-inhibiting-gsk-3%C3%AE
#4
Fen Lu, Xu Li, Wei Li, Ke Wei, Yong Yao, Qianlin Zhang, Xinliang Liang, Jiewen Zhang
Brain dysfunction, especially cognitive impairment, is one of the main complications in Alzheimer's disease (AD), which threatens the health of 46.8 million people worldwide. At present, the pathogenesis of cognitive dysfunction is only partially understood, and effective therapies for memory loss in AD remain elusive. Tetramethylpyrazine (TMP) is one of the major bioactive compounds purified from Chuanxiong, a Chinese herb used for the treatment of neurovascular and cardiovascular diseases. The neuroprotective properties of TMP are evident in some neurodegenerative diseases, including Parkinson's disease...
June 15, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28633291/p2x7-receptors-drive-spine-synapse-plasticity-in-the-learned-helplessness-model-of-depression
#5
L Otrokocsi, Á Kittel, B Sperlágh
Background: Major depressive disorder is characterized by structural and functional abnormalities of cortical and limbic brain areas, including a decrease in spine synapse number in the dentate gyrus (DG) of the hippocampus. Recent studies highlighted that both genetic and pharmacological invalidation of the purinergic P2X7 receptor (P2rx7) leads to antidepressant-like phenotype in animal experiments, however, the impact of P2rx7 on depression-related structural changes in the hippocampus is not clarified yet...
June 13, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28632163/melatonin-as-a-novel-interventional-candidate-for-fragile-x-syndrome-with-autism-spectrum-disorder-in-humans
#6
REVIEW
Jinyoung Won, Yunho Jin, Jeonghyun Choi, Sookyoung Park, Tae Ho Lee, Sang-Rae Lee, Kyu-Tae Chang, Yonggeun Hong
Fragile X syndrome (FXS) is the most common monogenic form of autism spectrum disorder (ASD). FXS with ASD results from the loss of fragile X mental retardation (fmr) gene products, including fragile X mental retardation protein (FMRP), which triggers a variety of physiological and behavioral abnormalities. This disorder is also correlated with clock components underlying behavioral circadian rhythms and, thus, a mutation of the fmr gene can result in disturbed sleep patterns and altered circadian rhythms. As a result, FXS with ASD individuals may experience dysregulation of melatonin synthesis and alterations in melatonin-dependent signaling pathways that can impair vigilance, learning, and memory abilities, and may be linked to autistic behaviors such as abnormal anxiety responses...
June 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28632018/exploring-the-learnability-and-usability-of-a-near-field-communication-based-application-for-semantic-enrichment-in-children-with-language-disorders
#7
Maria Luisa Lorusso, Emilia Biffi, Massimo Molteni, Gianluigi Reni
Recently, a few software applications (apps) have been developed to enhance vocabulary and conceptual networks to address the needs of children with language impairments (LI), but there is no evidence about their impact and their usability in therapy contexts. Here, we try to fill this gap presenting a system aimed at improving the semantic competence and the structural knowledge of children with LI. The goal of the study is to evaluate learnability, usability, user satisfaction and quality of the interaction between the system and the children...
February 13, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28631992/validity-of-a-verbal-incidental-learning-measure-from-the-wais-iv-in-older-adults
#8
Dustin B Hammers, Amanda M Kucera, Stephanie J Card, Kathryn A Tolle, Taylor J Atkinson, Kevin Duff, Robert J Spencer
Incidental memory may reflect a form of learning in everyday life, although it is not consistently evaluated during standard neuropsychological evaluations. Further validation of a recently created measure of verbal Incidental Learning (IL) from the Wechsler Adult Intelligence Scale-IV is necessary to understand the utility of such a measure in clinical settings. Sixty-eight adults aged 50 to 89 were recruited from a Cognitive Disorders Clinic while receiving a standard neuropsychological assessment, along with two additional measures of IL...
March 2, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/28631721/disc1-in-astrocytes-influences-adult-neurogenesis-and-hippocampus-dependent-behaviors-in-mice
#9
Chantelle E Terrillion, Bagrat Abazyan, Zhongxi Yang, Joshua Crawford, Alexey V Shevelkin, Yan Jouroukhin, Ki Hyun Yoo, Chang Hoon Cho, Robin Roychaudhuri, Solomon H Snyder, Mi-Hyeon Jang, Mikhail V Pletnikov
The functional role of genetic variants in glia in the pathogenesis of psychiatric disorders remains poorly studied. Disrupted-In-Schizophrenia 1 (DISC1), a genetic risk factor implicated in major mental disorders, has been implicated in regulation of astrocyte functions. As both astrocytes and DISC1 influence adult neurogenesis in the dentate gyrus (DG) of the hippocampus, we hypothesized that selective expression of dominant-negative C-terminus truncated human DISC1 (mutant DISC1) in astrocytes would affect adult hippocampal neurogenesis and hippocampus-dependent behaviors...
June 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28631520/striatal-changes-underlie-mpep-mediated-suppression-of-the-acquisition-and-expression-of-pramipexole-induced-place-preference-in-an-alpha-synuclein-rat-model-of-parkinson-s-disease
#10
Simon Loiodice, Portia McGhan, Vitalina Gryshkova, Renaud Fleurance, David Dardou, Aziz Hafidi, Andre Nogueira da Costa, Franck Durif
Impulsive-compulsive disorders in Parkinson's disease patients have been described as behavioural or substance addictions including pathological gambling or compulsive medication use of dopamine replacement therapy. A substantial gap remains in the understanding of these disorders. We previously demonstrated that the rewarding effect of the D2/D3 agonist pramipexole was enhanced after repeated exposure to L-dopa and alpha-synuclein mediated dopaminergic nigral loss with specific transcriptional signatures suggesting a key involvement of the glutamatergic pathway...
June 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28630256/the-small-gtpase-rac1-contributes-to-extinction-of-aversive-memories-of-drug-withdrawal-by-facilitating-gabaa-receptor-endocytosis-in-the-vmpfc
#11
Wei-Sheng Wang, Yun-Yue Ju, Qi-Xin Zhou, Jian-Xin Tang, Meng Li, Lei Zhang, Shuo Kang, Zhong-Guo Chen, Yu-Jun Wang, Hui Ji, Yu-Qiang Ding, Lin Xu, Jing-Gen Liu
Extinction of aversive memories has been a major concern in neuropsychiatric disorders such as anxiety disorders and drug addiction. However, the mechanisms underlying extinction of aversive memories are not fully understood. Here, we report that extinction of conditioned place aversion (CPA) to naloxone-precipitated opiate withdrawal in male rats activates Rho GTPase Rac1 in the ventromedial prefrontal cortex (vmPFC) in a BDNF-dependent manner, which determines GABAA receptor (GABAAR) endocytosis via triggering synaptic translocation of activity-regulated cytoskeleton-associated protein (Arc) through facilitating actin polymerization...
June 19, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28629604/novel-fkrp-mutations-in-a-japanese-mdc1c-sibship-clinically-diagnosed-with-fukuyama-congenital-muscular-dystrophy
#12
Mieko Yoshioka, Kazuhiro Kobayashi, Tatsushi Toda
INTRODUCTION: Fukuyama congenital muscular dystrophy (FCMD), caused by fukutin mutations, is the most common form of Japanese CMD. We followed a Japanese CMD sibship without fukutin mutation, and herein identified new FKRP mutations causing MDC1C rarely reported in Oriental countries. PATIENTS: Two affected siblings, individuals 1 (I-1, male) and 2 (I-2, female), were born uneventfully to unaffected, non-consanguineous parents. Severe hypotonia was soon apparent and serum CK levels were elevated: I-1: 1025 IU/L (normal range <130 IU/L) and I-2: 5350 IU/L...
June 16, 2017: Brain & Development
https://www.readbyqxmd.com/read/28629387/an-updated-assessment-of-microglia-depletion-current-concepts-and-future-directions
#13
REVIEW
Jinming Han, Robert A Harris, Xing-Mei Zhang
Microglia are the principal resident immune cells in the central nervous system and are believed to be versatile players in both inflammatory and physiological contexts. On the one hand, in order to safeguard the microenvironment microglia can be rapidly activated by contact with microbial products or cell debris, thereby exerting the functions of innate immunity via phagocytosis and secretion of cytokines and chemokines. Conversely, microglia can also assist in brain development, synaptic plasticity and neural repair through the production of neurotrophic factors and clearance of myelin debris...
June 19, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28629225/cortical-plasticity-in-depression
#14
Mariagiovanna Cantone, Alessia Bramanti, Giuseppe Lanza, Manuela Pennisi, Placido Bramanti, Giovanni Pennisi, Rita Bella
Neural plasticity is considered the neurophysiological correlate of learning and memory, although several studies have also noted that it plays crucial roles in a number of neurological and psychiatric diseases. Indeed, impaired brain plasticity may be one of the pathophysiological mechanisms that underlies both cognitive decline and major depression. Moreover, a degree of cognitive impairment is frequently observed throughout the clinical spectrum of mood disorders, and the relationship between depression and cognition is often bidirectional...
May 2017: ASN Neuro
https://www.readbyqxmd.com/read/28628780/brainage-score-indicates-accelerated-brain-aging-in-schizophrenia-but-not-bipolar-disorder
#15
Igor Nenadić, Maren Dietzek, Kerstin Langbein, Heinrich Sauer, Christian Gaser
BrainAGE (brain age gap estimation) is a novel morphometric parameter providing a univariate score derived from multivariate voxel-wise analyses. It uses a machine learning approach and can be used to analyse deviation from physiological developmental or aging-related trajectories. Using structural MRI data and BrainAGE quantification of acceleration or deceleration of in individual aging, we analysed data from 45 schizophrenia patients, 22 bipolar I disorder patients (mostly with previous psychotic symptoms / episodes), and 70 healthy controls...
May 24, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28628388/coordination-of-ampa-receptor-trafficking-by-rab-small-gtpases
#16
Angelika Hausser, Katalin Schlett
Synaptic connections in the brain are continuously weakened or strengthened in response to changes in neuronal activity. This process, known as synaptic plasticity, is the cellular basis for learning and memory, and is thought to be altered in several neuronal disorders. An important aspect of synaptic plasticity is the tightly controlled trafficking and synaptic targeting of the AMPA-type glutamate receptors, which are the major mediators of fast excitatory transmission in the brain. This review addresses the role of Rab GTPases in AMPA receptor trafficking in neurons under basal conditions and during activity-induced synaptic plasticity, especially during long-term potentiation (LTP) and long-term depression (LTD)...
June 19, 2017: Small GTPases
https://www.readbyqxmd.com/read/28628100/hotspots-of-missense-mutation-identify-neurodevelopmental-disorder-genes-and-functional-domains
#17
Madeleine R Geisheker, Gabriel Heymann, Tianyun Wang, Bradley P Coe, Tychele N Turner, Holly A F Stessman, Kendra Hoekzema, Malin Kvarnung, Marie Shaw, Kathryn Friend, Jan Liebelt, Christopher Barnett, Elizabeth M Thompson, Eric Haan, Hui Guo, Britt-Marie Anderlid, Ann Nordgren, Anna Lindstrand, Geert Vandeweyer, Antonino Alberti, Emanuela Avola, Mirella Vinci, Stefania Giusto, Tiziano Pramparo, Karen Pierce, Srinivasa Nalabolu, Jacob J Michaelson, Zdenek Sedlacek, Gijs W E Santen, Hilde Peeters, Hakon Hakonarson, Eric Courchesne, Corrado Romano, R Frank Kooy, Raphael A Bernier, Magnus Nordenskjöld, Jozef Gecz, Kun Xia, Larry S Zweifel, Evan E Eichler
Although de novo missense mutations have been predicted to account for more cases of autism than gene-truncating mutations, most research has focused on the latter. We identified the properties of de novo missense mutations in patients with neurodevelopmental disorders (NDDs) and highlight 35 genes with excess missense mutations. Additionally, 40 amino acid sites were recurrently mutated in 36 genes, and targeted sequencing of 20 sites in 17,688 patients with NDD identified 21 new patients with identical missense mutations...
June 19, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28627575/label-free-detection-of-aggregated-platelets-in-blood-by-machine-learning-aided-optofluidic-time-stretch-microscopy
#18
Yiyue Jiang, Cheng Lei, Atsushi Yasumoto, Hirofumi Kobayashi, Yuri Aisaka, Takuro Ito, Baoshan Guo, Nao Nitta, Natsumaro Kutsuna, Yasuyuki Ozeki, Atsuhiro Nakagawa, Yutaka Yatomi, Keisuke Goda
According to WHO, about 10 million new cases of thrombotic disorders are diagnosed worldwide every year. Thrombotic disorders, including atherothrombosis (the leading cause of death in the US and Europe), are induced by occlusion of blood vessels, due to the formation of blood clots in which aggregated platelets play an important role. The presence of aggregated platelets in blood may be related to atherothrombosis (especially acute myocardial infarction) and is, hence, useful as a potential biomarker for the disease...
June 19, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28627465/differential-proteome-analysis-of-hippocampus-and-temporal-cortex-using-label-free-based-2d-lc-ms-ms
#19
Xiaoyan Liu, Zhengguang Guo, Wei Liu, Wei Sun, Chao Ma
Hippocampus and temporal cortex are important brain regions, which play distinct, but complimentary roles in mediating learning and memory. Herein, we utilized label-free differential proteome strategy to explore function of normal human hippocampus and temporal cortex in learning and memory. As a result, a total of 5529 and 5702 proteins were identified in hippocampus and temporal cortex, respectively, 516 of which were significantly differential expressed, with abundance span 5 orders of magnitudes. Pathways analysis showed that temporal cortex was involved in growth of axons growth and synapse density regulation, through which could regulate long-term potentiation and long-term retention of trace memory...
June 13, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28625946/educational-needs-of-epileptologists-regarding-psychiatric-comorbidities-of-the-epilepsies-a-descriptive-quantitative-survey
#20
Marco Mula, Esper Cavalheiro, Alla Guekht, Andres M Kanner, Hyang Woon Lee, Cigdem Ozkara, Alfredo Thomson, Sarah J Wilson
Psychiatric disorders are relatively frequent comorbidities in epilepsy and they have an impact on morbidity, mortality, and quality of life. This is a report from the Task Force on Education of the ILAE Commission on Neuropsychiatry based on a survey about educational needs of epileptologists regarding management of the psychiatric comorbidities of epilepsy. The Task Force designed a quantitative questionnaire to survey the self-perceived confidence of child and adult epileptologists and psychiatrists in managing major psychiatric comorbidities of epilepsy to identify: (1) critical areas of improvement from a list of skills that are usually considered necessary for effective management of these conditions, and (2) the preferred educational format for improving these skills...
June 19, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
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