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https://www.readbyqxmd.com/read/29471549/glutamate-dehydrogenase-deficient-mice-display-schizophrenia-like-behavioral-abnormalities-and-ca1-specific-hippocampal-dysfunction
#1
Sharon S Lander, Usman Khan, Nicole Lewandowski, Darpan Chakraborty, Frank A Provenzano, Susana Mingote, Sergiy Chornyy, Francesca Frigerio, Pierre Maechler, Hanoch Kaphzan, Scott A Small, Stephen Rayport, Inna Gaisler-Salomon
Brain imaging has revealed that the CA1 subregion of the hippocampus is hyperactive in prodromal and diagnosed patients with schizophrenia (SCZ), and that glutamate is a driver of this hyperactivity. Strikingly, mice deficient in the glutamate synthetic enzyme glutaminase have CA1 hypoactivity and a SCZ-resilience profile, implicating glutamate-metabolizing enzymes. To address this further, we examined mice with a brain-wide deficit in the glutamate-metabolizing enzyme glutamate dehydrogenase (GDH), encoded by Glud1, which should lead to glutamate excess due to reduced glutamate metabolism in astrocytes...
February 20, 2018: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29468516/a-systematic-review-of-cognition-in-chiari-i-malformation
#2
REVIEW
Jeffrey M Rogers, Greg Savage, Marcus A Stoodley
Displacement of the cerebellar tonsils in Chiari type I malformation (CMI) can affect functions controlled by the cerebellum and brainstem. While playing an integral role in the control of movement, the cerebellum also has widespread cortical connections, influencing a range of cognitive process. A systematic literature review was conducted to examine the relationship between cognition and CMI, assessing evidence for general or domain-specific cognitive change. The search protocol examined the AMED, CINAHL, Cochrane Library, EMBASE, MEDLINE, PsycINFO, and Scopus databases...
February 21, 2018: Neuropsychology Review
https://www.readbyqxmd.com/read/29467710/structural-covariance-network-of-cortical-gyrification-in-benign-childhood-epilepsy-with-centrotemporal-spikes
#3
Lin Jiang, Tijiang Zhang, Fajin Lv, Shiguang Li, Heng Liu, Zhiwei Zhang, Tianyou Luo
Benign childhood epilepsy with centrotemporal spikes (BECTS) is associated with cognitive and language problems. According to recent studies, disruptions in brain structure and function in children with BECTS are beyond a Rolandic focus, suggesting atypical cortical development. However, previous studies utilizing surface-based metrics (e.g., cortical gyrification) and their structural covariance networks at high resolution in children with BECTS are limited. Twenty-six children with BECTS (15 males/11 females; 10...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29464816/on-the-issue-of-choosing-psychodiagnostic-methods-of-measuring-and-scoring-of-cognitive-deficit-in-case-of-schizophrenia
#4
Elena Rudolfovna Isaeva, Gulfya Gadilevna Lebedeva, Yulia Alexandrovna Simon
RATIONALE, AIMS, AND OBJECTIVES: The article is dedicated to the search of more accurate psychodiagnostic methods and methods of evaluation that can help to define the degree of manifestation of cognitive deficiency among patients suffering from various schizophrenic disorders. The notions of cognitive deficiency and cognitive profile are analysed; we understand them as the correlation between intact and damaged components of cognitive processes and their diagrammatic representation. The authors prove that it is essential to provide a detailed scale of cognitive deficiencies detectable in case of schizophrenic disorders and to design universal algorithms that could translate the results of traditional content analysis of cognitive disorders into quantitative indicators...
February 21, 2018: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/29461920/a-randomized-controlled-trial-for-veterans-with-ptsd-and-substance-use-disorder-creating-change-versus-seeking-safety
#5
Lisa M Najavits, Karen Krinsley, Molly E Waring, Matthew W Gallagher, Christopher Skidmore
BACKGROUND: Posttraumatic stress disorder (PTSD) and substance use disorder (SUD) co-occur in military veterans and other populations. OBJECTIVE: To conduct a randomized controlled trial to compare a new past-focused treatment (Creating Change; CC), to a well-established, evidence-based present-focused treatment for PTSD/SUD (Seeking Safety; SS), on symptoms of both disorders. CC guides patients to process the past through exploration of PTSD/SUD life themes and memories whereas SS focuses on coping skills in the present...
February 20, 2018: Substance Use & Misuse
https://www.readbyqxmd.com/read/29460902/-the-efficacy-of-cortexin-and-memantinol-memantine-in-the-treatment-of-cognitive-impairment-in-patients-with-chronic-cerebral-ischemia
#6
A I Fedin
AIM: To study the dynamics of cognitive impairment in patients with chronic cerebral ischemia (CCI) treated with cortexin and memantinol (memantine). MATERIAL AND METHODS: The authors present the results of the multicenter observational program 'KORMEN' that studied the efficacy of cortexin and memantinol in the treatment of cognitive impairment in patients with CCI. The study included 495 patients, 204 (41.2%) men and 291 (58.8%) women. Patients were stratified into two groups: cortexin group (n=388 (78...
2018: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29459837/effects-of-relaxing-and-arousing-music-during-imagery-training-on-dart-throwing-performance-physiological-arousal-indices-and-competitive-state-anxiety
#7
Garry Kuan, Tony Morris, Yee Cheng Kueh, Peter C Terry
Music that is carefully selected to match the requirements of activities and the characteristics of individuals has been shown to produce significant impacts on performance enhancement (Priest et al., 2004). There is also evidence that music can enhance imagery (Grocke and Wigram, 2007), although few studies have investigated the effects of music on imagery in the context of sport skills. In the present study, the effects of relaxing and arousing music during imagery on dart-throwing performance, physiological arousal indices, and competitive state anxiety, were investigated among 63 novice dart throwers...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29459284/prefrontal-mediation-of-the-reading-network-predicts-intervention-response-in-dyslexia
#8
Katherine S Aboud, Laura A Barquero, Laurie E Cutting
A primary challenge facing the development of interventions for dyslexia is identifying effective predictors of intervention response. While behavioral literature has identified core cognitive characteristics of response, the distinction of reading versus executive cognitive contributions to response profiles remains unclear, due in part to the difficulty of segregating these constructs using behavioral outputs. In the current study we used functional neuroimaging to piece apart the mechanisms of how/whether executive and reading network relationships are predictive of intervention response...
February 9, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29458297/-r-fluoxetine-enhances-cognitive-flexibility-and-hippocampal-cell-proliferation-in-mice
#9
Subhi Marwari, Gavin S Dawe
Fluoxetine is a clinically successful antidepressant. It is a racemic mixture of (R) and (S) stereoisomers. In preclinical studies, chronic treatment with fluoxetine (10 mg/kg) had antidepressant effects correlated with increased hippocampal cell proliferation in adult rodents. However, the contribution of the enantiomers of fluoxetine is largely unknown. We investigated the effects of treatment with (R)- and (S)-fluoxetine on cognitive behavioral paradigms and examined cell proliferation in the hippocampus of C57BL/6J female mice...
February 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29457783/cellular-senescence-in-brain-aging-and-neurodegenerative-diseases-evidence-and-perspectives
#10
Darren J Baker, Ronald C Petersen
Along with a general decline in overall health, most chronic degenerative human diseases are inherently associated with increasing age. Age-associated cognitive impairments and neurodegenerative diseases, such as Parkinson's and Alzheimer's diseases, are potentially debilitating conditions that lack viable options for treatment, resulting in a tremendous economic and societal cost. Most high-profile clinical trials for neurodegenerative diseases have led to inefficacious results, suggesting that novel approaches to treating these pathologies are needed...
February 19, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29456143/neocortical-association-cell-types-in-the-forebrain-of-birds-and-alligators
#11
Steven D Briscoe, Caroline B Albertin, Joanna J Rowell, Clifton W Ragsdale
The avian dorsal telencephalon has two vast territories, the nidopallium and the mesopallium, both of which have been shown to contribute substantially to higher cognitive functions. From their connections, these territories have been proposed as equivalent to mammalian neocortical layers 2 and 3, various neocortical association areas, or the amygdala, but whether these are analogies or homologies by descent is unknown. We investigated the molecular profiles of the mesopallium and the nidopallium with RNA-seq...
February 14, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29456127/neurocognitive-disorder-in-hypertensive-patients-heart-brain-study
#12
A Vicario, G H Cerezo, M Del Sueldo, J Zilberman, S M Pawluk, N Lódolo, A E De Cerchio, R M Ruffa, R Plunkett, M E Giuliano, P Forcada, S Hauad, R Flores
The relation between hypertension and cognitive impairment is an undisputable fact. The aims of this study were to determine the prevalence of cognitive impairment in hypertensive patients, to identify the most affected cognitive domain, and to observe the association with different parameters of hypertension and other vascular risk factors. A multicentre study was carried out, and 1281 hypertensive patients of both genders and ≥21 years of age were included. Data on the following parameters were obtained: cognitive status (Minimal Cognitive Examination), behavioural status (Hospital Anxiety and Depression Scale), blood pressure, anthropometry, and biochemical profile...
February 15, 2018: Hipertensión y Riesgo Vascular
https://www.readbyqxmd.com/read/29455947/the-neural-exploitation-hypothesis-and-its-implications-for-an-embodied-approach-to-language-and-cognition-insights-from-the-study-of-action-verbs-processing-and-motor-disorders-in-parkinson-s-disease
#13
REVIEW
Vittorio Gallese, Valentina Cuccio
As it is widely known, Parkinson's disease is clinically characterized by motor disorders such as the loss of voluntary movement control, including resting tremor, postural instability, and bradykinesia (Bocanegra et al., 2015; Helmich, Hallett, Deuschl, Toni, & Bloem, 2012; Liu et al., 2006; Rosin, Topka, & Dichgans, 1997). In the last years, many empirical studies (e.g., Bocanegra et al., 2015; Spadacenta et al., 2012) have also shown that the processing of action verbs is selectively impaired in patients affected by this neurodegenerative disorder...
February 2, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29453408/biosignals-reflect-pair-dynamics-in-collaborative-work-eda-and-ecg-study-of-pair-programming-in-a-classroom-environment
#14
Lauri Ahonen, Benjamin Ultan Cowley, Arto Hellas, Kai Puolamäki
Collaboration is a complex phenomenon, where intersubjective dynamics can greatly affect the productive outcome. Evaluation of collaboration is thus of great interest, and can potentially help achieve better outcomes and performance. However, quantitative measurement of collaboration is difficult, because much of the interaction occurs in the intersubjective space between collaborators. Manual observation and/or self-reports are subjective, laborious, and have a poor temporal resolution. The problem is compounded in natural settings where task-activity and response-compliance cannot be controlled...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29452684/evaluation-of-the-safety-tolerability-and-efficacy-of-pimavanserin-versus-placebo-in-patients-with-alzheimer-s-disease-psychosis-a-phase-2-randomised-placebo-controlled-double-blind-study
#15
Clive Ballard, Carol Banister, Zunera Khan, Jeffrey Cummings, George Demos, Bruce Coate, James M Youakim, Randall Owen, Srdjan Stankovic
BACKGROUND: Pimavanserin is a selective 5-HT 2A receptor inverse agonist and antagonist approved in the USA for the treatment of hallucinations and delusions associated with Parkinson's disease psychosis. No safe or effective pharmacological treatment is approved for psychosis in patients with Alzheimer's disease. Therefore, we aimed to evaluate the safety, tolerability, and efficacy of pimavanserin versus placebo in patients with Alzheimer's disease psychosis. METHODS: We did a phase 2, randomised, double-blind, placebo-controlled, single-centre (with multiple affiliated nursing home sites across the UK) study...
March 2018: Lancet Neurology
https://www.readbyqxmd.com/read/29451990/intellectual-efficiency-in-children-and-adolescents-with-spina-bifida-myelomeningocele-and-shunted-hydrocephalus
#16
Francesca Burro, Armando Cama, Vicenza Lertora, Edvige Veneselli, Serena Rossetti, Lina Pezzuti
We studied the intellectual profiles of 13 Italian children diagnosed with spina bifida myelomeningocele and shunted hydrocephalus (MMC HC) against a control group of children. The results showed that MMC HC group had lower performance in all subtests, four indices, and the FSIQ of the Wechsler Intelligence Scale for Children, forth-edition. The MMC HC group showed flat cognitive profiles between subtests within each index and between four core indices. However, the cognitive abilities that were mostly impaired seemed to be related to visual selective and focused attention, to visual acuity, to visuo-perceptive organization and visuomotor integration and to visual short-term memory...
February 16, 2018: Developmental Neuropsychology
https://www.readbyqxmd.com/read/29450736/health-and-quality-of-life-differ-between-community-living-older-people-with-and-without-remaining-teeth-who-recently-received-formal-home-care-a-cross-sectional-study
#17
A R Hoeksema, L L Peters, G M Raghoebar, H J A Meijer, A Vissink, A Visser
OBJECTIVE: To assess oral health, health, and quality of life (QoL) of care-dependent community-living older people with and without remaining teeth who recently received formal home care. MATERIALS AND METHODS: For this cross-sectional observational study, community-living older people (≥ 65 years), who recently (< 6 months) received formal home care, were interviewed with validated questionnaires and underwent an oral examination. Oral health, general health, medicines usage, frailty (Groningen Frailty Indicator), cognition (Minimal Mental State Examination), QoL (RAND 36), and oral health-related QoL (Oral Health Impact Profile-14) were assessed...
February 15, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29450650/access-to-the-cns-biomarker-strategies-for-dopaminergic-treatments
#18
REVIEW
Willem Johan van den Brink, Semra Palic, Isabelle Köhler, Elizabeth Cunera Maria de Lange
Despite substantial research carried out over the last decades, it remains difficult to understand the wide range of pharmacological effects of dopaminergic agents. The dopaminergic system is involved in several neurological disorders, such as Parkinson's disease and schizophrenia. This complex system features multiple pathways implicated in emotion and cognition, psychomotor functions and endocrine control through activation of G protein-coupled dopamine receptors. This review focuses on the system-wide effects of dopaminergic agents on the multiple biochemical and endocrine pathways, in particular the biomarkers (i...
February 15, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29445200/impaired-%C3%AE-arrestin-recruitment-and-reduced-desensitization-by-non-catechol-agonists-of-the-d1-dopamine-receptor
#19
David L Gray, John A Allen, Scot Mente, Rebecca E O'Connor, George J DeMarco, Ivan Efremov, Patrick Tierney, Dmitri Volfson, Jennifer Davoren, Edward Guilmette, Michelle Salafia, Rouba Kozak, Michael D Ehlers
Selective activation of dopamine D1 receptors (D1Rs) has been pursued for 40 years as a therapeutic strategy for neurologic and psychiatric diseases due to the fundamental role of D1Rs in motor function, reward processing, and cognition. All known D1R-selective agonists are catechols, which are rapidly metabolized and desensitize the D1R after prolonged exposure, reducing agonist response. As such, drug-like selective D1R agonists have remained elusive. Here we report a novel series of selective, potent non-catechol D1R agonists with promising in vivo pharmacokinetic properties...
February 14, 2018: Nature Communications
https://www.readbyqxmd.com/read/29445163/plasma-and-urinary-metabolomic-profiles-of-down-syndrome-correlate-with-alteration-of-mitochondrial-metabolism
#20
Maria Caracausi, Veronica Ghini, Chiara Locatelli, Martina Mericio, Allison Piovesan, Francesca Antonaros, Maria Chiara Pelleri, Lorenza Vitale, Rosa Anna Vacca, Federica Bedetti, Maria Chiara Mimmi, Claudio Luchinat, Paola Turano, Pierluigi Strippoli, Guido Cocchi
Down syndrome (DS) is caused by the presence of a supernumerary copy of the human chromosome 21 (Hsa21) and is the most frequent genetic cause of intellectual disability (ID). Key traits of DS are the distinctive facies and cognitive impairment. We conducted for the first time an analysis of the Nuclear Magnetic Resonance (NMR)-detectable part of the metabolome in plasma and urine samples, studying 67 subjects with DS and 29 normal subjects as controls selected among DS siblings. Multivariate analysis of the NMR metabolomic profiles showed a clear discrimination (up to of 80% accuracy) between the DS and the control groups...
February 14, 2018: Scientific Reports
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