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https://www.readbyqxmd.com/read/27926996/small-molecule-modulator-of-sigma-2-receptor-is-neuroprotective-and-reduces-cognitive-deficits-and-neuro-inflammation-in-experimental-models-of-alzheimer-s-disease
#1
Bitna Yi, James J Sahn, Pooneh Memar Ardestani, Andrew K Evans, Luisa Scott, Jessica Z Chan, Sangeetha Iyer, Ashley Crisp, Gabriella Zuniga, Jonathan Pierce-Shimomura, Stephen F Martin, Mehrdad Shamloo
Accumulating evidence suggests that modulating the sigma 2 receptor (Sig2R) can provide beneficial effects for neurodegenerative diseases. Herein, we report the identification of a novel class of Sig2R binding ligands and their cellular and in vivo activity in experimental models of Alzheimer's disease (AD). We report that SAS-0132 and DKR-1051, selective ligands of Sig2R, modulate intracellular Ca(2+) levels in human SK-N-SH neuroblastoma cells. The Sig2R antagonists SAS-0132 and JVW-1009 are neuroprotective in a C...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27926742/modeling-deficits-from-early-auditory-information-processing-to-psychosocial-functioning-in-schizophrenia
#2
Michael L Thomas, Michael F Green, Gerhard Hellemann, Catherine A Sugar, Melissa Tarasenko, Monica E Calkins, Tiffany A Greenwood, Raquel E Gur, Ruben C Gur, Laura C Lazzeroni, Keith H Nuechterlein, Allen D Radant, Larry J Seidman, Alexandra L Shiluk, Larry J Siever, Jeremy M Silverman, Joyce Sprock, William S Stone, Neal R Swerdlow, Debby W Tsuang, Ming T Tsuang, Bruce I Turetsky, David L Braff, Gregory A Light
Importance: Neurophysiologic measures of early auditory information processing (EAP) are used as endophenotypes in genomic studies and biomarkers in clinical intervention studies. Research in schizophrenia has established correlations among measures of EAP, cognition, clinical symptoms, and functional outcome. Clarifying these associations by determining the pathways through which deficits in EAP affect functioning would suggest when and where to therapeutically intervene. Objectives: To characterize the pathways from EAP to outcome and to estimate the extent to which enhancement of basic information processing might improve cognition and psychosocial functioning in schizophrenia...
December 7, 2016: JAMA Psychiatry
https://www.readbyqxmd.com/read/27925140/tea-consumption-reduces-the-incidence-of-neurocognitive-disorders-findings-from-the-singapore-longitudinal-aging-study
#3
L Feng, M-S Chong, W-S Lim, Q Gao, M S Nyunt, T-S Lee, S L Collinson, T Tsoi, E-H Kua, T-P Ng
OBJECTIVES: To examine the relationships between tea consumption habits and incident neurocognitive disorders (NCD) and explore potential effect modification by gender and the apolipoprotein E (APOE) genotype. DESIGN: Population-based longitudinal study. SETTING: The Singapore Longitudinal Aging Study (SLAS). PARTICIPANTS: 957 community-living Chinese elderly who were cognitively intact at baseline. MEASUREMENTS: We collected tea consumption information at baseline from 2003 to 2005 and ascertained incident cases of neurocognitive disorders (NCD) from 2006 to 2010...
2016: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/27924582/modeling-rasopathies-with-genetically-modified-mouse-models
#4
Isabel Hernández-Porras, Carmen Guerra
The RAS/MAPK signaling pathway plays key roles in development, cell survival and proliferation, as well as in cancer pathogenesis. Molecular genetic studies have identified a group of developmental syndromes, the RASopathies, caused by germ line mutations in this pathway. The syndromes included within this classification are neurofibromatosis type 1 (NF1), Noonan syndrome (NS), Noonan syndrome with multiple lentigines (NS-ML, formerly known as LEOPARD syndrome), Costello syndrome (CS), cardio-facio-cutaneous syndrome (CFC), Legius syndrome (LS, NF1-like syndrome), capillary malformation-arteriovenous malformation syndrome (CM-AVM), and hereditary gingival fibromatosis (HGF) type 1...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27923730/are-neurocognitive-factors-associated-with-repetition-of-self-harm-a-systematic-review
#5
REVIEW
Angharad N de Cates, Karen Rees, Fabrice Jollant, Benjamin Perry, Karina Bennett, Katie Joyce, Eimear Leyden, Catherine Harmer, Keith Hawton, Kees van Heeringen, Matthew R Broome
BACKGROUND: Prediction of self-harm is limited clinically. Early identification of individuals likely to repeat self-harm could improve outcomes and reduce suicide risk. Various neurocognitive deficits have been found in people who self-harm, but the ability of these to predict repetition has yet to be established AIMS: Identify neurocognitive factors that may predict repetition of self-harm. METHODS: Systematic narrative review of English language publications assessing neurocognitive functioning and self-harm repetition, searching multiple databases from inception to March 2015...
December 3, 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27922203/vulnerability-to-alcohol-related-problems-a-policy-brief-with-implications-for-the-regulation-of-alcohol-marketing
#6
Thomas F Babor, Katherine Robaina, Jonathan K Noel, E Bruce Ritson
BACKGROUND AND AIMS: The concern that alcohol advertising can have detrimental effects on vulnerable viewers has prompted the development of codes of responsible advertising practices. This paper evaluates critically the concept of vulnerability as it applies to (1) susceptibility to alcohol-related harm and (2) susceptibility to the effects of marketing, and describes its implications for the regulation of alcohol marketing. METHOD: We describe the findings of key published studies, review papers and expert reports to determine whether these two types of vulnerability apply to population groups defined by (1) age and developmental history; (2) personality characteristics; (3) family history of alcoholism; (4) female sex and pregnancy risk; and (5) history of alcohol dependence and recovery status...
December 6, 2016: Addiction
https://www.readbyqxmd.com/read/27921860/effects-of-cognitive-remediation-therapy-on-neurocognition-and-negative-symptoms-in-schizophrenia-an-italian-naturalistic-study
#7
Mariangela Lanfredi, Giacomo Deste, Clarissa Ferrari, Stefano Barlati, Laura Rosa Magni, Roberta Rossi, Luca de Peri, Marco Bonomi, Giuseppe Rossi, Antonio Vita
INTRODUCTION: Cognitive remediation therapy (CRT) has been reported to positively affect neurocognitive processes among patients with schizophrenia; however, the degree to which changes in cognition is linked to improved clinical symptoms, remains poorly understood. The current study aimed to investigate whether cognitive gains were associated to improvements in negative symptoms' severity in patients with schizophrenia living in two Italian psychiatric facilities. METHODS: Patients with a diagnosis of schizophrenia were consecutively assigned to CRT (n = 33) and compared with an historical control group (n = 28)...
December 6, 2016: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/27921429/-congenital-hyperinsulinism-loss-of-b-cell-self-control
#8
Jan Lebl, Klára Roženková, Štěpánka Průhová
Congenital hyperinsulinism is a serious blood glucose regulation defect that interferes with brain development, leading to mental retardation, neurological sequelae and secondary epilepsy and ultimately may be life-threatening. Congenital hyperinsulinism (CHI) is caused by genetic defects of regulation of insulin secretion that induce insulin oversecretion in intrauterine life and postnatally. The clinical consequence is fetal macrosomia and subsequently neonatal and infantile hypoglycaemia. The most severe form is caused by biallelic mutations of KCNJ11 and ABCC8 genes that encode both potassium channel subunits, whereas their heterozygous mutations as well as enzymatic defects (GLUD1, HADH, GCK) lead to milder presentation...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921220/increased-cell-free-mitochondrial-dna-is-a-marker-of-ongoing-inflammation-and-better-neurocognitive-function-in-virologically-suppressed-hiv-infected-individuals
#9
Josué Pérez-Santiago, Michelli F De Oliveira, Susanna R Var, Tyler R C Day, Steven P Woods, Sara Gianella, Sanjay R Mehta
Cell-free mitochondrial DNA (mtDNA) is a highly immunogenic molecule that is associated with several inflammatory conditions and with neurocognitive impairment during untreated HIV infection. Here, we investigate how cell-free mtDNA in cerebrospinal fluid (CSF) is associated with inflammation, neuronal damage, and neurocognitive functioning in the context of long-term suppressive antiretroviral therapy (ART). We quantified the levels of cell-free mtDNA in the CSF from 41 HIV-infected individuals with completely suppressed HIV RNA levels in blood plasma (<50 copies/mL) by droplet digital PCR...
December 5, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27920740/spaces-in-the-brain-from-neurons-to-meanings
#10
REVIEW
Christian Balkenius, Peter Gärdenfors
Spaces in the brain can refer either to psychological spaces, which are derived from similarity judgments, or to neurocognitive spaces, which are based on the activities of neural structures. We want to show how psychological spaces naturally emerge from the underlying neural spaces by dimension reductions that preserve similarity structures and the relevant categorizations. Some neuronal representational formats that may generate the psychological spaces are presented, compared, and discussed in relation to the mathematical principles of monotonicity, continuity, and convexity...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27919750/mapping-the-functional-connectome-in-traumatic-brain-injury-what-can-graph-metrics-tell-us
#11
Karen Caeyenberghs, Helena Verhelst, Adam Clemente, Peter H Wilson
OBJECTIVE: Traumatic brain injury (TBI) is associated with cognitive and motor deficits, and poses a significant personal, societal, and economic burden. One mechanism by which TBI is thought to affect cognition and behaviour is through changes in functional connectivity. Graph theory is a powerful framework for quantifying topological features of neuroimaging-derived functional networks. The objective of this paper is to review studies examining functional connectivity in TBI with an emphasis on graph theoretical analysis that is proving to be valuable in uncovering network abnormalities in this condition...
December 2, 2016: NeuroImage
https://www.readbyqxmd.com/read/27919523/adjunctive-minocycline-for-schizophrenia-a-meta-analysis-of-randomized-controlled-trials
#12
Ying-Qiang Xiang, Wei Zheng, Shi-Bin Wang, Xin-Hu Yang, Dong-Bin Cai, Chee H Ng, Gabor S Ungvari, Deanna L Kelly, Wei-Ying Xu, Yu-Tao Xiang
This study aimed to conduct a meta-analysis of the efficacy and safety of adjunctive minocycline for schizophrenia. Randomized controlled trials (RCTs) comparing adjunctive minocycline with placebo in patients with schizophrenia were included in the meta-analysis. Two independent investigators extracted and synthesized data. Standard mean differences (SMDs), risk ratio (RR) ±95% confidence intervals (CIs) and the number-needed-to-harm (NNH) were calculated. Eight RCTs with 548 schizophrenia patient including 286 (52...
December 2, 2016: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27919297/fluid-intelligence-and-the-cross-frequency-coupling-of-neuronal-oscillations
#13
Adam Chuderski
Several existing theoretical models predict that the individual capacity of working memory and abstract reasoning (fluid intelligence) strongly depends on certain features of neuronal oscillations, especially their cross-frequency coupling. Empirical evidence supporting these predictions is still scarce, but it makes the future studies on oscillatory coupling a promising line of research that can uncover the physiological underpinnings of fluid intelligence. Cross-frequency coupling may serve as the optimal level of description of neurocognitive processes, integrating their genetic, structural, neurochemical, and bioelectrical underlying factors with explanations in terms of cognitive operations driven by neuronal oscillations...
December 6, 2016: Spanish Journal of Psychology
https://www.readbyqxmd.com/read/27917589/the-petale-study-late-adverse-effects-and-biomarkers-in-childhood-acute-lymphoblastic-leukemia-survivors
#14
Sophie Marcoux, Simon Drouin, Caroline Laverdière, Nathalie Alos, Gregor U Andelfinger, Laurence Bertout, Daniel Curnier, Matthias G Friedrich, Ekaterini A Kritikou, Geneviève Lefebvre, Emile Levy, Sarah Lippé, Valérie Marcil, Marie-Josée Raboisson, Frank Rauch, Philippe Robaey, Mariia Samoilenko, Chantal Séguin, Serge Sultan, Maja Krajinovic, Daniel Sinnett
BACKGROUND: Childhood cancer survivorship issues represent an established public health challenge. Most late adverse effects (LAEs) have been demonstrated to be time and treatment dependent. The PETALE study is a multidisciplinary research project aiming to comprehensively characterize LAEs and identify associated predictive biomarkers in childhood acute lymphoblastic leukemia (cALL) survivors. METHODS: cALL survivors treated at Sainte-Justine University Health Center with Dana-Farber Cancer Institution-ALL protocols 87-01 through 2005-01 were eligible...
December 4, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27917538/five-short-screening-tests-in-the-detection-of-prevalent-delirium-diagnostic-accuracy-and-performance-in-different-neurocognitive-subgroups
#15
N A O'Regan, K Maughan, N Liddy, J Fitzgerald, D Adamis, D W Molloy, D Meagher, S Timmons
BACKGROUND: Delirium is prevalent and serious, yet remains under-recognised. Systematic screening could improve detection; however, consensus is lacking as to the best approach. Our aim was to assess the diagnostic accuracy of five simple cognitive tests in delirium screening: six-item cognitive impairment test (6-CIT), clock-drawing test, spatial span forwards, months of the year backwards (MOTYB) and intersecting pentagons (IPT). METHODS: A cross-sectional study was conducted...
December 5, 2016: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/27917536/the-potential-of-neuroimaging-for-identifying-predictors-of-adolescent-alcohol-use-initiation-and-misuse
#16
Laura O'Halloran, Charlotte Nymberg, Lee Jollans, Hugh Garavan, Robert Whelan
BACKGROUND AND AIMS: Dysfunction in brain regions underlying impulse control, reward processing and executive function have been associated previously with adolescent alcohol misuse. However, identifying pre-existing neurobiological risk factors, as distinct from changes arising from early alcohol-use, is difficult. Here, we outline how neuroimaging data can identify the neural predictors of adolescent alcohol-use initiation and misuse by using prospective longitudinal studies to follow initially alcohol-naive individuals over time and by neuroimaging adolescents with inherited risk factors for alcohol misuse...
December 5, 2016: Addiction
https://www.readbyqxmd.com/read/27917284/the-neurobiology-of-dispositional-negativity-and-attentional-biases-to-threat-implications-for-understanding-anxiety-disorders-in-adults-and-youth
#17
Alexander J Shackman, Melissa D Stockbridge, Rachael M Tillman, Claire M Kaplan, Do P M Tromp, Andrew S Fox, Matthias Gamer
When extreme, anxiety can become debilitating. Anxiety disorders, which often first emerge early in development, are common and challenging to treat, yet the neurocognitive mechanisms that confer increased risk have only recently begun to come into focus. Here we review recent work highlighting the importance of neural circuits centered on the amygdala. We begin by describing dispositional negativity, a core dimension of childhood temperament and adult personality and an important risk factor for the development of anxiety disorders and other kinds of stress-sensitive psychopathology...
2016: Journal of Experimental Psychopathology
https://www.readbyqxmd.com/read/27917115/switching-adolescent-high-fat-diet-to-adult-control-diet-restores-neurocognitive-alterations
#18
Chloé Boitard, Shauna L Parkes, Amandine Cavaroc, Frédéric Tantot, Nathalie Castanon, Sophie Layé, Sophie Tronel, Gustavo Pacheco-Lopez, Etienne Coutureau, Guillaume Ferreira
In addition to metabolic and cardiovascular disorders, obesity is associated with adverse cognitive and emotional outcomes. Its growing prevalence in adolescents is particularly alarming since this is a period of ongoing maturation for brain structures (including the hippocampus and amygdala) and for the hypothalamic-pituitary-adrenal (HPA) stress axis, which is required for cognitive and emotional processing. We recently demonstrated that adolescent, but not adult, high-fat diet (HF) exposure leads to impaired hippocampal function and enhanced amygdala function through HPA axis alteration (Boitard et al...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27917107/the-berlin-brain-computer-interface-progress-beyond-communication-and-control
#19
REVIEW
Benjamin Blankertz, Laura Acqualagna, Sven Dähne, Stefan Haufe, Matthias Schultze-Kraft, Irene Sturm, Marija Ušćumlic, Markus A Wenzel, Gabriel Curio, Klaus-Robert Müller
The combined effect of fundamental results about neurocognitive processes and advancements in decoding mental states from ongoing brain signals has brought forth a whole range of potential neurotechnological applications. In this article, we review our developments in this area and put them into perspective. These examples cover a wide range of maturity levels with respect to their applicability. While we assume we are still a long way away from integrating Brain-Computer Interface (BCI) technology in general interaction with computers, or from implementing neurotechnological measures in safety-critical workplaces, results have already now been obtained involving a BCI as research tool...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27914864/serum-dhea-s-concentration-correlates-with-clinical-symptoms-and-neurocognitive-function-in-patients-with-bipolar-ii-disorder-a-case-controlled-study
#20
Sheng-Yu Lee, Liang-Jen Wang, Cheng-Ho Chang, Chih-Ching Wu, Hsing-Ling Chen, Shih-Hsien Lin, Chin-Liang Chu, Ti Lu, Ru-Band Lu
OBJECTIVES: Dysregulation of the neuroendocrine system including dehydroepiandrosterone (DHEA), dehydroepiandrosterone sulfate (DHEA-S), and pregnenolone may play a role in the pathophysiology of bipolar II disorder (BP-II). The aims of the current study are to determine (a) the differences in DHEA, DHEA-S and pregnenolone in patients with BP-II and controls; and (b) the correlation of levels of the above hormones, cognitive function, and clinical symptoms. METHODS: Patients diagnosed with BP-II and healthy controls were recruited from psychiatric department...
November 30, 2016: Progress in Neuro-psychopharmacology & Biological Psychiatry
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