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https://www.readbyqxmd.com/read/29045836/arc-requires-psd95-for-assembly-into-postsynaptic-complexes-involved-with-neural-dysfunction-and-intelligence
#1
Esperanza Fernández, Mark O Collins, René A W Frank, Fei Zhu, Maksym V Kopanitsa, Jess Nithianantharajah, Sarah A Lemprière, David Fricker, Kathryn A Elsegood, Catherine L McLaughlin, Mike D R Croning, Colin Mclean, J Douglas Armstrong, W David Hill, Ian J Deary, Giulia Cencelli, Claudia Bagni, Menachem Fromer, Shaun M Purcell, Andrew J Pocklington, Jyoti S Choudhary, Noboru H Komiyama, Seth G N Grant
Arc is an activity-regulated neuronal protein, but little is known about its interactions, assembly into multiprotein complexes, and role in human disease and cognition. We applied an integrated proteomic and genetic strategy by targeting a tandem affinity purification (TAP) tag and Venus fluorescent protein into the endogenous Arc gene in mice. This allowed biochemical and proteomic characterization of native complexes in wild-type and knockout mice. We identified many Arc-interacting proteins, of which PSD95 was the most abundant...
October 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/29045770/treatment-to-enhance-cognition-in-bipolar-disorder-trec-bd-efficacy-of-a-randomized-controlled-trial-of-cognitive-remediation-versus-active-control
#2
Kathryn E Lewandowski, Sarah H Sperry, Bruce M Cohen, Lesley A Norris, Garrett M Fitzmaurice, Dost Ongur, Matcheri S Keshavan
OBJECTIVE: Cognitive dysfunction is a core symptom dimension in bipolar disorder and a strong predictor of functional outcomes. Cognitive remediation (CR) produces moderate, durable effects on cognition in patients with schizophrenia; however, studies of CR in patients with bipolar disorder are sparse and findings have been mixed. Thus, the aim of this study was to evaluate the effects of CR versus active control in patients with bipolar disorder with psychosis. METHODS: Patients with a DSM-IV diagnosis of bipolar disorder with psychosis (n = 75) were randomized to a 70-hour computerized CR program or a dose-matched computer control using a parallel design with 1:1 allocation between July 2011 and November 2015...
October 17, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/29045710/radiation-induced-cognitive-toxicity-pathophysiology-and-interventions-to-reduce-toxicity-in-adults
#3
Christopher Wilke, David Grosshans, Joseph Duman, Paul Brown, Jing Li
Radiotherapy is ubiquitous in the treatment of patients with both primary brain tumors as well as disease which is metastatic to the brain. This therapy is not without cost, however, as cognitive decline is frequently associated with cranial radiation, particularly with whole brain radiotherapy (WBRT). The precise mechanisms responsible for radiation-induced morbidity remain incompletely understood and continue to be an active area of ongoing research. In this article, we review the hypothetical means by which cranial radiation induces cognitive decline as well as potential therapeutic approaches to prevent, minimize or reverse treatment-induced cognitive deterioration...
October 14, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29045451/getting-to-the-heart-of-the-matter-does-aberrant-interoceptive-processing-contribute-towards-emotional-eating
#4
Hayley A Young, Claire Williams, Aimee E Pink, Gary Freegard, Amy Owens, David Benton
According to estimates from Public Health England, by 2034 70% of adults are expected to be overweight or obese, therefore understanding the underpinning aetiology is a priority. Eating in response to negative affect contributes towards obesity, however, little is known about the underlying mechanisms. Evidence that visceral afferent signals contribute towards the experience of emotion is accumulating rapidly, with the emergence of new influential models of 'active inference'. No longer viewed as a 'bottom up' process, new interoceptive facets based on 'top down' predictions have been proposed, although at present it is unclear which aspects of interoception contribute to aberrant eating behaviour and obesity...
2017: PloS One
https://www.readbyqxmd.com/read/29044823/the-many-characters-of-visual-alpha-oscillations
#5
Michael S Clayton, Nick Yeung, Roi Cohen Kadosh
A central feature of human brain activity is the alpha rhythm: a 7 - 13 Hz oscillation observed most notably over occipitoparietal brain regions during periods of eyes-closed rest. Alpha oscillations covary with changes in visual processing, and have been associated with a broad range of neurocognitive functions. In this article, we review these associations and suggest that alpha oscillations can be thought to exhibit at least five distinct 'characters': those of the inhibitor, perceiver, predictor, communicator, and stabiliser...
October 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29044780/-hot-versus-cold-behavioral-cognitive-styles-motivational-dopaminergic-versus-cognitive-cholinergic-processing-of-a-pavlovian-cocaine-cue-in-sign-and-goal-tracking-rats
#6
Kyle K Pitchers, Louisa F Kane, Youngsoo Kim, Terry E Robinson, Martin Sarter
Discrete Pavlovian reward cues acquire more potent incentive motivational properties (incentive salience), in some animals (sign-trackers; STs) compared to others (goal trackers; GTs). Conversely, GTs appear to be better than STs in processing more complex contextual cues, perhaps reflecting their relatively greater bias for goal-directed cue processing. Here we investigated the activity of two major prefrontal neuromodulatory input systems, dopamine (DA) and acetylcholine (ACh), in response to a discrete Pavlovian cue that was previously paired with cocaine administration in STs and GTs...
October 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29044209/cell-penetrating-interactomic-inhibition-of-nuclear-factor-kappa-b-in-a-mouse-model-of-postoperative-cognitive-dysfunction
#7
So Yeong Cheon, Jeong Min Kim, Eun Hee Kam, Chun-Chang Ho, Eun Jung Kim, Seungsoo Chung, Ji-Hyun Jeong, Diane Da-Hyun Lee, Sang-Won Lee, Bon-Nyeo Koo
Some patients experience impaired cognitive functioning after surgery, a phenomenon referred to as postoperative cognitive dysfunction (POCD). Signs of POCD are closely associated with the development of systemic or hippocampal inflammation. However, the precise pathophysiological mechanisms of prevention/treatment options for POCD still remain unclear. After injury, the transcriptional factor nuclear factor-kappa B (NF-κB) is thought to regulate or stimulate inflammation amplification. Therefore, we designed a cell-penetrating fusion protein called nt-p65-TMD, which inhibits NF-κB p65 activation by translocating into the nucleus...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29044112/cognitive-task-information-is-transferred-between-brain-regions-via-resting-state-network-topology
#8
Takuya Ito, Kaustubh R Kulkarni, Douglas H Schultz, Ravi D Mill, Richard H Chen, Levi I Solomyak, Michael W Cole
Resting-state network connectivity has been associated with a variety of cognitive abilities, yet it remains unclear how these connectivity properties might contribute to the neurocognitive computations underlying these abilities. We developed a new approach-information transfer mapping-to test the hypothesis that resting-state functional network topology describes the computational mappings between brain regions that carry cognitive task information. Here, we report that the transfer of diverse, task-rule information in distributed brain regions can be predicted based on estimated activity flow through resting-state network connections...
October 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/29042846/developing-a-user-reported-measure-of-care-co-ordination
#9
Helen Crump, Jenny King, Chris Graham, Ruth Thorlby, Veena Raleigh, Don Redding, Nick Goodwin
INTRODUCTION: Older people with chronic conditions often receive poor care because of the fragmented way in which their services are delivered from multiple sources. Providers have limited tools to directly capture the views of older people about their experiences of care co-ordination. The study aim was to design and test a survey tool to capture the experiences of older people with chronic conditions regarding how well their health and (where applicable) social care was co-ordinated...
March 31, 2017: International Journal of Integrated Care
https://www.readbyqxmd.com/read/29042781/children-with-borderline-intellectual-functioning-and-autism-spectrum-disorder-developmental-trajectories-from-4-to-11-years-of-age
#10
Martina Barnevik Olsson, Anette Holm, Joakim Westerlund, Åsa Lundholm Hedvall, Christopher Gillberg, Elisabeth Fernell
BACKGROUND: Studies on autism have tended to focus either on those with intellectual disability (ie, those with intellectual quotient [IQ] under 70) or on the group that is referred to as "high-functioning", that is, those with borderline, average or above average IQ. The literature on cognition and daily functioning in autism spectrum disorder combined specifically with borderline intellectual functioning (IQ 70-84) is limited. METHODS: From a representative group of 208 preschool children diagnosed with autism spectrum disorder, those 50 children in the group with borderline intellectual functioning at ages 4...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29042188/network-based-brain-stimulation-selectively-impairs-spatial-retrieval
#11
Kamin Kim, Amber Schedlbauer, Matthew Rollo, Suganya Karunakaran, Arne D Ekstrom, Nitin Tandon
BACKGROUND: Direct brain stimulation via electrodes implanted for intracranial electroencephalography (iEEG) permits the modulation of endogenous electrical signals with significantly greater spatial and temporal specificity than non-invasive approaches. It also allows for the stimulation of deep brain structures important to memory, such as the hippocampus, that are difficult, if not impossible, to target non-invasively. Direct stimulation studies of these deep memory structures, though, have produced mixed results, with some reporting improvement, some impairment, and others, no consistent changes...
October 5, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29040957/molecular-docking-and-antiamnesic-effects-of-nepitrin-isolated-from-rosmarinus-officinalis-on-scopolamine-induced-memory-impairment-in-mice
#12
Nasiara Karim, Imran Khan, Abeer Abdelhalim, Heba Abdel-Halim, Jane R Hanrahan
Rosmarinus officinalis has long been known as the herb of remembrance. The present study was undertaken to investigate the anti-amnesic effects of nepitrin isolated from Rosmarinus officinalis using in-vivo models of Y-maze and novel object recognition test (NORT) along with in vitro antioxidant and acetylcholinesterase (AChE) and buterylcholinesterase (BuChE) inhibition potential. Nepitrin showed a concentration dependent inhibition of AChE and BuChE enzymes with IC50 values of 65 and 72μg/mL, respectively and antioxidant activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2, 2'-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) with IC50 values 270 and 210μg/mL, respectively...
October 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29040828/neuropsychological-functioning-and-brain-energetics-of-drug-resistant-mesial-temporal-lobe-epilepsy-patients
#13
Camila Moreira Osório, Alexandra Latini, Rodrigo Bainy Leal, Maria Emília Rodrigues de Oliveira Thais, Helena Dresch Vascouto, Aline Pertile Remor, Mark William Lopes, Marcelo Neves Linhares, Juliana Ben, Roberta de Paula Martins, Rui Daniel Prediger, Alexandre Ademar Hoeller, Hans Joachim Markowitsch, Peter Wolf, Kátia Lin, Roger Walz
Interictal hypometabolism is commonly measured by 18-fluoro-deoxyglucose Positron Emission Tomography (FDG-PET) in the temporal lobe of patients with mesial temporal lobe epilepsy (MTLE-HS). Left temporal lobe interictal FDG-PET hypometabolism has been associated with verbal memory impairment, while right temporal lobe FDG-PET hypometabolism is associated with nonverbal memory impairment. The biochemical mechanisms involved in these findings remain unknown. In comparison to healthy controls (n=21), surgically treated patients with MTLE-HS (n=32, left side=17) had significant lower scores in the Rey Auditory Verbal Learning Test (RAVLT retention and delayed), Logical Memory II (LMII), Boston Naming test (BNT), Letter Fluency and Category Fluency...
October 12, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29040766/brain-to-brain-synchronization-across-two-persons-predicts-mutual-prosociality
#14
Yi Hu, Yinying Hu, Li Xianchun, Yafeng Pan, Xiaojun Cheng
People tend to be more prosocial after synchronizing behaviors with others, yet the underlying neural mechanisms are rarely known. In the present study, participant dyads performed either a coordination task or an independence task, with their brain activations recorded via the functional near-infrared spectroscopy (fNIRS) hyperscanning technique. Participant dyads in the coordination group showed higher synchronized behaviors and greater subsequent inclination to helping each other than those in the independent group, indicating the prosocial effect of interpersonal synchrony...
October 13, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/29040750/cool-callous-and-in-control-superior-inhibitory-control-in-frequent-players-of-video-games-with-violent-content
#15
Laura Stockdale, Robert G Morrison, Robert Palumbo, James Garbarino, Rebecca L Silton
Research on the effects of media violence exposure has shown robust associations among violent media exposure, increased aggressive behavior, and decreased empathy. Preliminary research indicates that frequent players of violent video games may have differences in emotional and cognitive processes compared to infrequent or non-players, yet research examining the amount and content of game play and the relation of these factors with affective and cognitive outcomes is limited. The present study measured neural correlates of response inhibition in the context of implicit attention to emotion, and how these factors are related to empathic responding in frequent and infrequent players of video games with graphically violent content...
October 4, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/29040533/hippocampal-phosphorylated-tau-induced-cognitive-decline-dendritic-spine-loss-and-mitochondrial-abnormalities-in-a-mouse-model-of-alzheimer-s-disease
#16
Ramesh Kandimalla, Maria Manczak, Xiangling Yin, Rui Wang, P Hemachandra Reddy
The purpose of our study was to understand the toxic effects of hippocampal phosphorylated tau in tau mice. Using rotarod and Morris Water Maze tests, immunoblotting & immunofluorescence, Golgi-cox staining and transmission electron microscopy, we assessed cognitive behavior, measured protein levels of mitochondrial dynamics, MAP2, total & phosphorylated tau, and quantified dendritic spines and mitochondrial number and length in 12-month-old tau mice with P301L mutation. Mitochondrial function was assessed by measuring the levels of H2O2, lipid peroxidation, cytochrome oxidase activity and mitochondrial ATP...
October 12, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29040155/the-complexities-of-fibromyalgia-and-its-comorbidities
#17
Adi Lichtenstein, Shmuel Tiosano, Howard Amital
PURPOSE OF REVIEW: Fibromyalgia syndrome (FMS) is defined as chronic, widespread musculoskeletal pain and tenderness with concomitant mood and cognitive dysfunction. Several comorbidities have been reported to be associated with FMS. We reviewed the literature concerning the most noteworthy chronic conditions associated with FMS. RECENT FINDINGS: There is mounting evidence displaying the concurrence of fibromyalgia and coexisting medical and psychiatric conditions...
October 16, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/29040015/distinct-representations-of-magnitude-and-spatial-position-within-parietal-cortex-during-number-space-mapping
#18
Frank J Kanayet, Andrew Mattarella-Micke, Peter J Kohler, Anthony M Norcia, Bruce D McCandliss, James L McClelland
Mapping numbers onto space is foundational to mathematical cognition. These cognitive operations are often conceptualized in the context of a "mental number line" and involve multiple brain regions in or near the intraparietal sulcus (IPS) that have been implicated both in numeral and spatial cognition. Here we examine possible differentiation of function within these brain areas in relating numbers to spatial positions. By isolating the planning phase of a number line task and introducing spatiotopic mapping tools from fMRI into the mental number line task research, we are able to focus our analysis on the neural activity of areas in anterior IPS (aIPS) previously associated with number processing and on spatiotopically organized areas in and around posterior IPS (pIPS), while participants prepare to place a number on a number line...
October 17, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29039993/physical-activity-pre-and-post-dementia-english-longitudinal-study-of-ageing
#19
Mira Soni, Martin Orrell, Stephan Bandelow, Andrew Steptoe, Snorri Rafnsson, Eleonora d'Orsi, Andre Xavier, Eef Hogervorst
BACKGROUND: To inform public health interventions, further investigation is needed to identify: (1) frequency/intensity of everyday physical activity (PA) needed to reduce dementia risk; (2) whether post-diagnosis reduction in PA is associated with cognitive outcomes in people with dementia. METHODS: Data from 11,391 men and women (aged ≥50) were obtained from the English Longitudinal Study of Ageing cohort. Assessments were carried out at baseline (2002-2003) and at biannual follow-ups (2004-2013)...
October 17, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/29039023/astaxanthin-ameliorates-doxorubicin-induced-cognitive-impairment-chemobrain-in-experimental-rat-model-impact-on-oxidative-inflammatory-and-apoptotic-machineries
#20
Sara Emad El-Agamy, Amal Kamal Abdel-Aziz, Sara Wahdan, Ahmed Esmat, Samar S Azab
Chemobrain refers to a common sequelae experienced by 15-80% of cancer patients exposed to chemotherapeutics. The antineoplastic agent doxorubicin (DOX) has been implicated in a strenuous neurotoxicity manifested as decline in cognitive functions, most probably via cytokine-induced oxidative and nitrosative damage to brain tissues. Astaxanthin (AST), a naturally occurring carotenoid, is reputable for its outstanding antioxidant, anti-inflammatory, and antiapoptotic activities. Therefore, the aim of the current study was to investigate the potential neuroprotective and memory-enhancing effects of AST against DOX-induced behavioral and neurobiological abnormalities...
October 16, 2017: Molecular Neurobiology
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