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https://www.readbyqxmd.com/read/28632929/persistent-neuropsychiatric-impairment-in-hcv-patients-or-educational-mismatch
#1
Anders Gade
Dirks et al.(1) just published a study of 159 patients infected with hepatitis C virus. They are to be commended for excluding patients with advanced fibrosis or liver cirrhosis, HIV co-infection, and present drug addiction, which have confounded interpretation in many earlier studies of HCV. The four patient groups differed significantly from controls in most cognitive domains studied. However, for the evaluation of these cognitive test results, a crucial piece of information is missing in the article: education...
June 20, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28631336/a-neuroimaging-approach-to-capture-cognitive-reserve-application-to-alzheimer-s-disease
#2
Anna C van Loenhoud, Alle Meije Wink, Colin Groot, Sander C J Verfaillie, Jos Twisk, Frederik Barkhof, Bart van Berckel, Philip Scheltens, Wiesje M van der Flier, Rik Ossenkoppele
Cognitive reserve (CR) explains interindividual differences in the ability to maintain cognitive function in the presence of neuropathology. We developed a neuroimaging approach including a measure of brain atrophy and cognition to capture this construct. In a group of 511 Alzheimer's disease (AD) biomarker-positive subjects in different stages across the disease spectrum, we performed 3T magnetic resonance imaging and predicted gray matter (GM) volume in each voxel based on cognitive performance (i.e. a global cognitive composite score), adjusted for age, sex, disease stage, premorbid brain size (i...
June 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28630377/effects-of-cognitive-reserve-depend-on-executive-and-semantic-demands-of-the-task
#3
R Ryan Darby, Michael Brickhouse, David A Wolk, Bradford C Dickerson
BACKGROUND: Cognitive reserve (CR) is one factor that helps to maintain cognitive function in patients with Alzheimer's disease (AD). Whether the effects of CR depend on the semantic/executive components of the task remains unknown. METHODS: 470 patients (138 with AD, 332 with mild cognitive impairment (MCI)) were selected from the Alzheimer's Disease Neuroimaging Initiative database. Linear regression models were used to determine the effects of CR (years of education) on cognitive performance after controlling for demographic factors and regional cortical atrophy...
June 19, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28628228/epigenetic-mechanisms-underlying-nmda-receptor-hypofunction-in-the-prefrontal-cortex-of-juvenile-animals-in-the-mam-model-for-schizophrenia
#4
Yelena Gulchina, Song-Jun Xu, Melissa A Snyder, Felice Elefant, Wen-Jun Gao
Schizophrenia (SCZ) is characterized not only by psychosis, but also by working memory and executive functioning deficiencies, processes that rely on the prefrontal cortex (PFC). Because these cognitive impairments emerge prior to psychosis onset, we investigated synaptic function during development in the neurodevelopmental methylazoxymethanol acetate (MAM) model for SCZ. Specifically, we hypothesize that NMDAR hypofunction is attributable to reductions in the NR2B subunit through aberrant epigenetic regulation of gene expression, resulting in deficient synaptic physiology and PFC-dependent cognitive dysfunction, a hallmark of SCZ...
June 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28628197/vesicular-acetylcholine-transporter-vacht-overexpression-induces-major-modifications-of-striatal-cholinergic-interneuron-morphology-and-function
#5
Helena Janickova, Vania F Prado, Marco A M Prado, Salah El Mestikawy, Véronique Bernard
Striatal cholinergic interneurons (CIN) are pivotal for the regulation of the striatal network. Acetylcholine (ACh) released by CIN is centrally involved in reward behavior as well as locomotor or cognitive functions. Recently, BAC transgenic mice expressing channelrhodopsin-2 (ChR2) protein under the control of the choline acetyltransferase (ChAT) promoter (ChAT-ChR2) and displaying almost 50 extra copies of the VAChT gene were used to dissect cholinergic circuit connectivity and function using optogenetic approaches...
June 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28626971/genetics-and-developmental-biology-of-cooperation
#6
Claudia Kasper, Maddalena Vierbuchen, Ulrich Ernst, Stefan Fischer, Reinder Radersma, Aura Raulo, Filipa Cunha-Saraiva, Min Wu, Kenyon Mobley, Barbara Taborsky
Despite essential progress towards understanding the evolution of cooperative behaviour, we still lack detailed knowledge about its underlying molecular mechanisms, genetic basis, evolutionary dynamics and ontogeny. An international workshop 'Genetics and Development of Cooperation', organized by the University of Bern (Switzerland), aimed at discussing the current progress in this research field and suggesting avenues for future research. This review uses the major themes of the meeting as a springboard to synthesize the concepts of genetic and non-genetic inheritance of cooperation, and to review a quantitative genetic framework that allows for the inclusion of indirect genetic effects...
June 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28626906/behavioural-implications-of-traditional-treatment-and-closed-loop-automated-insulin-delivery-systems-in-type-1-diabetes-applying-a-cognitive-restraint-theory-framework
#7
REVIEW
A R Kahkoska, E J Mayer-Davis, K K Hood, D M Maahs, K S Burger
As the prevalence of obesity in Type 1 diabetes rises, the effects of emerging therapy options should be considered in the context of both weight and glycaemic control outcomes. Artificial pancreas device systems will 'close the loop' between blood glucose monitoring and automated insulin delivery and may transform day-to-day dietary management for people with Type 1 diabetes in multiple ways. In the present review, we draw directly from cognitive restraint theory to consider unintended impacts that closed-loop systems may have on ingestive behaviour and food intake...
June 19, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28621017/overview-of-systematic-reviews-effective-home-support-in-dementia-care-components-and-impacts-stage-1-psychosocial-interventions-for-dementia
#8
REVIEW
Paul Clarkson, Jane Hughes, Chengqiu Xie, Matthew Larbey, Brenda Roe, Clarissa M Giebel, David Jolley, David Challis
AIM: To synthesise evidence to identify the components of effective psychosocial interventions in dementia care to inform clinical practice, policy and research. BACKGROUND: With population ageing dementia represents a significant care challenge with 60% of people with dementia living at home. DESIGN: Overview of systematic reviews with narrative summary. DATA SOURCES: Electronic searches of published systematic reviews in English using Cochrane Database of Systematic Reviews, DARE, EPPI-Centre, between September 2013 - April 2014...
June 16, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28618687/re-cognitive-reserve-and-postoperative-delirium-in-older-adults
#9
Tomas L Griebling
No abstract text is available yet for this article.
July 2017: Journal of Urology
https://www.readbyqxmd.com/read/28618192/the-patient-buddy-app-can-potentially-prevent-hepatic-encephalopathy-related-readmissions
#10
Dinesh Ganapathy, Chathur Acharya, Jatinder Lachar, Kavish Patidar, Richard K Sterling, Melanie B White, Catherine Ignudo, Swamy Bommidi, John DeSoto, Leroy R Thacker, Scott Matherly, Jawaid Shaw, Mohammad S Siddiqui, Puneet Puri, Arun J Sanyal, Velimir Luketic, Hannah Lee, R Todd Stravitz, Jasmohan S Bajaj
BACKGROUND AND AIM: Readmissions are a major burden in cirrhosis. A proportion of readmissions in cirrhosis, especially due to hepatic encephalopathy (HE) could be avoided through patient and caregiver engagement. We aimed to define the feasibility of using the Patient Buddy App and its impact on 30-day readmissions by engaging and educating cirrhotic inpatients and caregivers in a pilot study. METHODS: Cirrhotic inpatients with caregivers were enrolled and followed for 30 days post-discharge...
June 15, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28618054/ethics-intimacy-and-sexuality-in-aged-care
#11
Catherine Cook, Vanessa Schouten, Mark Henrickson, Sandra Mcdonald
AIM: To analyse the accounts of staff, family and residents in order to advance ethical insights into intimacy and sexuality in residential care. BACKGROUND: Discourses of ageing readily construct people in residential aged care as post-sexual, vulnerable and at risk of sexual exploitation and therefore expressions of intimacy and sexuality may be responded to as deviant and inherently risky. Staff may manage decision-making tacitly, without recourse to policies and education...
June 15, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28618018/executive-functions-memory-and-social-cognitive-deficits-and-recovery-in-chronic-alcoholism-a-critical-review-to-inform-future-research
#12
Anne-Pascale Le Berre, Rosemary Fama, Edith V Sullivan
Alcoholism is a complex and dynamic disease, punctuated by periods of abstinence and relapse, and influenced by a multitude of vulnerability factors. Chronic excessive alcohol consumption is associated with cognitive deficits, ranging from mild to severe, in executive functions, memory, and metacognitive abilities, with associated impairment in emotional processes and social cognition. These deficits can compromise efforts in initiating and sustaining abstinence by hampering efficacy of clinical treatment and can obstruct efforts in enabling good decision-making, success in interpersonal/social interactions, and awareness of cognitive and behavioral dysfunctions...
June 15, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28612521/could-modafinil-prevent-psychostimulant-addiction-an-experimental-study-in-rats
#13
Verônica Tironi Dias, Luciana Taschetto Vey, Higor Zuquetto Rosa, Lívia Ferraz D'avila, Raquel Cristine Silva Barcelos, Marilise Escobar Burger
Addiction is a serious health problem which leads to general social impairment. The period of adolescence plays a significant role in drug abuse liability. Psychostimulants, such as modafinil (MOD), are majorly used by teenagers seeking improvements in cognition, which contributes to its indiscriminate use. The present study aimed to investigate the influence of MOD (64 mg/kg by gavage, once a day) treatment during adolescence (PND 28-42) on amphetamine (AMPH, 4 mg/kg i.p.) conditioned place preference (CPP) in early adulthood (PND 60)...
June 14, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28612411/deficits-in-temporal-processing-in-mice-prenatally-exposed-to-valproic-acid
#14
Julieta Acosta, Marcos A Campolongo, Christian Höcht, Amaicha M Depino, Diego A Golombek, Patricia V Agostino
Temporal processing in the seconds-to-minutes range, known as interval timing, is a crucial cognitive function that requires activation of cortico-striatal circuits via dopaminergic-glutamatergic pathways. In humans, both children and adults with autism spectrum disorders (ASD) present alterations in their estimation of time intervals. At present, there are no records of interval timing studies in animal models of ASD. Hence, the objective of the present work was to evaluate interval timing in a mouse model of prenatal exposure to valproic acid (VPA) - a treatment used to induce human-like autistic features in rodent models...
June 14, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28609587/chemogenetic-modulation-of-g-protein-coupled-receptor-signalling-in-visual-attention-research
#15
Søren H Jørgensen, Ciarán Martin Fitzpatrick, Ulrik Gether, David D P Woldbye, Andreas T Sørensen
Attention is a fundamental cognitive process involved in nearly all aspects of life. Abnormal attention control is a symptom of many neurological disorders, most notably recognized in ADHD (attention deficit hyperactivity disorder). Although attentional performance and its malfunction has been a major area of investigation, it has proven difficult to accurately associate specific neuronal projections, cell types, neurotransmitter systems and receptors with distinct phenotypes owing to its complexity. In this MiniReview, we present a recently invented technology known as Designer Receptors Exclusively Activated by Designer Drugs (DREADDs)...
June 13, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28609014/space-time-and-episodic-memory-the-hippocampus-is-all-over-the-cognitive-map
#16
Arne D Ekstrom, Charan Ranganath
In recent years, the field has reached an impasse between models suggesting that the hippocampus is fundamentally involved in spatial processing and models suggesting that the hippocampus automatically encodes all dimensions of experience in the service of memory. Here, we consider key conceptual issues that have impeded progress in our understanding of hippocampal function, and we review findings that establish the scope and limits of hippocampal involvement in navigation and memory. We argue that space and time serve as a primary scaffold to break up experiences into specific contexts, and to organize multimodal input that is to be associated within a context...
June 13, 2017: Hippocampus
https://www.readbyqxmd.com/read/28608560/endocannabinoid-system-in-neurodegenerative-disorders
#17
REVIEW
Balapal S Basavarajappa, Madhu Shivakumar, Vikram Joshi, Shivakumar Subbanna
Most neurodegenerative disorders (NDDs) are characterized by cognitive impairment and other neurological defects. The definite cause of and pathways underlying the progression of these NDDs are not well defined. Several mechanisms have been proposed to contribute to the development of NDDs. These mechanisms may proceed concurrently or successively, and they differ among cell types at different developmental stages in distinct brain regions. The endocannabinoid system, which involves cannabinoid receptors type 1 (CB1R) and type 2 (CB2R), endogenous cannabinoids and the enzymes that catabolize these compounds, has been shown to contribute to the development of NDDs in several animal models and human studies...
June 13, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28605058/cardiovascular-pharmacogenomics-and-cognitive-function-in-patients-with-schizophrenia
#18
Kristen M Ward, A Zarina Kraal, Stephanie A Flowers, Vicki L Ellingrod
STUDY OBJECTIVE: To examine the impact of multiple risk alleles for cognitive dysfunction and cardiovascular disease risk on cognitive function, and to determine if these relationships varied by cognitive reserve (CR) or concomitant medication use in patients with schizophrenia. DESIGN: Cross-sectional study. SETTING: Ambulatory mental health centers. PATIENTS: A total of 122 adults with a schizophrenia spectrum diagnosis who were maintained on a stable antipsychotic regimen for at least 6 months prior to study enrollment; patients were divided into three CR groups based on years of formal education: no high school completion or equivalent (low-education group [18 patients]); completion of high school or equivalent (moderate-education group [36 patients]; or any degree of post-high school education (high-education group [68 patients])...
June 12, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28594578/cognitive-reserve-is-not-associated-with-improved-performance-in-all-cognitive-domains
#19
Louise M Lavrencic, Owen F Churches, Hannah A D Keage
Cognitive reserve beneficially affects cognitive performance, even into advanced age. However, the benefits afforded by high cognitive reserve may not extend to all cognitive domains. This study investigated whether cognitive reserve differentially affects performance on cognitive tasks, in 521 cognitively healthy individuals aged 60 to 98 years (Mage = 68, SD = 6.22, 287 female); years of education was used to index cognitive reserve. Cognitive performance variables assessed attention, executive functions, verbal memory, motor performance, orientation, perception of emotion, processing speed, and working memory...
June 8, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/28586513/the-association-between-the-physical-environment-and-the-well-being-of-older-people-in-residential-care-facilities-a-multilevel-analysis
#20
Susanna Nordin, Kevin Mckee, Helle Wijk, Marie Elf
AIMS: To investigate the associations between the quality of the physical environment and the psychological and social well-being of older people living in residential care facilities. BACKGROUND: Many older people in care facilities have cognitive and physical frailties and are at risk of experiencing low levels of well-being. High quality physical environments can support older people as frailty increases and promote their well-being. Although the importance of the physical environment for residents' well-being is recognised, more research is needed...
June 6, 2017: Journal of Advanced Nursing
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