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https://www.readbyqxmd.com/read/28222531/physical-exercise-with-music-maintains-activities-of-daily-living-in-patients-with-dementia-mihama-kiho-project-part-21
#1
Masayuki Satoh, Jun-Ichi Ogawa, Tomoko Tokita, Noriko Nakaguchi, Koji Nakao, Hirotaka Kida, Hidekazu Tomimoto
BACKGROUND: Recent studies suggest that combined non-pharmacological interventions are more beneficial than single interventions for primary and secondary prevention of dementia. We previously reported enhanced effects of physical exercise with music (ExM) on cognitive function in normal elderly people compared to exercise alone. OBJECTIVE: To identify if ExM improves cognitive function and activities of daily living (ADLs) in dementia patients over cognitive stimulation (CS)...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222529/progressive-motor-deficit-is-mediated-by-the-denervation-of-neuromuscular-junctions-and-axonal-degeneration-in-transgenic-mice-expressing-mutant-p301s-tau-protein
#2
Zhuoran Yin, Femke Valkenburg, Betty E Hornix, Ietje Mantingh-Otter, Xingdong Zhou, Muriel Mari, Fulvio Reggiori, Debby Van Dam, Bart J L Eggen, Peter P De Deyn, Erik Boddeke
Tauopathies include a variety of neurodegenerative diseases associated with the pathological aggregation of hyperphosphorylated tau, resulting in progressive cognitive decline and motor impairment. The underlying mechanism for motor deficits related to tauopathy is not yet fully understood. Here, we use a novel transgenic tau mouse line, Tau 58/4, with enhanced neuron-specific expression of P301S mutant tau to investigate the motor abnormalities in association with the peripheral nervous system. Using stationary beam, gait, and rotarod tests, motor deficits were found in Tau 58/4 mice already 3 months after birth, which deteriorated during aging...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222504/bimanual-gesture-imitation-in-alzheimer-s-disease
#3
G Nter Sanin, Thomas Benke
BACKGROUND/OBJECTIVE: Unimanual gesture production or imitation has often been studied in Alzheimer's disease (AD) during apraxia testing. In the present study, it was hypothesized that bimanual motor tasks may be a sensitive method to detect impairments of motor cognition in AD due to increased demands on the cognitive system. METHODS: We investigated bimanual, meaningless gesture imitation in 45 AD outpatients, 38 subjects with mild cognitive impairment (MCI), and 50 normal controls (NC) attending a memory clinic...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222503/selenium-levels-in-serum-red-blood-cells-and-cerebrospinal-fluid-of-alzheimer-s-disease-patients-a-report-from-the-australian-imaging-biomarker-lifestyle-flagship-study-of-ageing-aibl
#4
Bárbara R Cardoso, Dominic J Hare, Ashley I Bush, Qiao-Xin Li, Christopher J Fowler, Colin L Masters, Ralph N Martins, Katherine Ganio, Amber Lothian, Soumya Mukherjee, Eugene A Kapp, Blaine R Roberts
Selenium (Se) protects cells against oxidative stress damage through a range of bioactive selenoproteins. Increased oxidative stress is a prominent feature of Alzheimer's disease (AD), and previous studies have shown that Se deficiency is associated with age-related cognitive decline. In this study, we assessed Se status in different biofluids from a subgroup of participants in the Australian Imaging, Biomarkers and Lifestyle Flagship Study of Ageing. As Se in humans can either be an active component of selenoproteins or inactive via non-specific incorporation into other proteins, we used both size exclusion chromatography-inductively coupled plasma-mass spectrometry (SEC-ICP-MS) and tandem mass spectrometry to characterize selenoproteins in serum...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222381/domain-specific-and-domain-general-processes-underlying-metacognitive-judgments
#5
Lisa M Fitzgerald, Mahnaz Arvaneh, Paul M Dockree
Metacognition and self-awareness are commonly assumed to operate as global capacities. However, there have been few attempts to test this assumption across multiple cognitive domains and metacognitive evaluations. Here, we assessed the covariance between "online" metacognitive processes, as measured by decision confidence judgments in the domains of perception and memory, and error awareness in the domain of attention to action. Previous research investigating metacognition across task domains have not matched stimulus characteristics across tasks raising the possibility that any differences in metacognitive accuracy may be influenced by local task properties...
February 17, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28221998/reduction-of-assessment-time-for-stroke-related-impairments-using-robotic-evaluation
#6
Sayyed Mostafa Mostafavi, Stephen H Scott, Sean P Dukelow, Parvin Mousavi
Robotic technologies can provide objective, reliable tools for assessing a broad range of sensory, motor and cognitive functions. However, as additional tasks are developed on these platforms, the time necessary to assess a patient increases. In this paper, we present a hierarchical task selection strategy for five tasks that form part of the battery of standard tests performed on the KINARM robotic system. The strategy is built using dependencies derived through three types of analyses: i) nonlinear hierarchical ordering theory is applied to determine the ordering of five tasks; ii) the parameters of all tasks are also ranked using non-linear hierarchical ordering theory; and iii) a modeling technique, fast orthogonal search (FOS), is applied to assess the predictive power of each robotic task for estimation of other task parameters...
February 16, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28221197/physical-activity-and-cognitive-function-among-older-adults-with-hypertension
#7
Emily Frith, Paul D Loprinzi
OBJECTIVE: We evaluated the specific association between physical activity and cognitive function among a national sample of the broader US adult population with evidence of systemic hypertension. METHODS: Data from the 1999-2002 National Health and Nutrition Examination Survey were used to identify 1554 older adults, aged 60-85 years, with evidence of hypertension. The Digit Symbol Substitution Test (DSST) was used to assess cognitive function tasks of pairing and free recall among participants...
February 17, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28219113/personality-coping-and-social-support-as-predictors-of-long-term-quality-of-life-trajectories-in-older-breast-cancer-survivors-calgb-protocol-369901-alliance
#8
Estrella Durá-Ferrandis, Jeanne S Mandelblatt, Jonathan Clapp, George Luta, Leigh Anne Faul, Gretchen Kimmick, Harvey J Cohen, Rachel L Yung, Arti Hurria
OBJECTIVE: To determine long-term quality-of-life (QoL) trajectories among breast cancer survivors aged 65+ ("older") evaluating the effects of personality and social support. METHODS: Older women (N = 1280) newly diagnosed with invasive, non-metastatic breast cancer completed baseline assessments. Follow-up data were collected 6 and 12 months later and then annually for up to 7 years (median 4.5 years). QoL was assessed using EORTC-QLQC30 emotional, physical, and cognitive scales...
February 20, 2017: Psycho-oncology
https://www.readbyqxmd.com/read/28214073/older-adults-with-ptsd-brief-state-of-research-and-evidence-based-psychotherapy-case-illustration
#9
Joan M Cook, Elissa McCarthy, Steven R Thorp
Although lifetime exposure to potentially traumatic events among older adults is fairly high, rates of full-blown post-traumatic stress disorder (PTSD) are estimated at about 4.5%, a rate lower than that for middle-aged and young adults. Nevertheless, PTSD seems to be an under-recognized and under-treated condition in older adults. Assessment and treatment can be challenging in this population for various reasons, including potential cognitive or sensory decline and comorbid mental and physical disorders. This article provides highlights of the empirical research on PTSD in late life, including information on its effects on cognition and physical health...
January 4, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28213563/development-and-validation-of-a-patient-reported-outcome-instrument-for-skin-involvement-in-patients-with-systemic-sclerosis
#10
Ada Man, Jeannette K Correa, Jessica Ziemek, Robert W Simms, David T Felson, Robert Lafyatis
OBJECTIVES: We developed a patient-reported outcome (PRO) instrument to assess the skin-related quality of life in patients with systemic sclerosis (SSc). METHODS: Participants with SSc provided input on skin-related health effects through focus groups. We developed items for scleroderma skin PRO (SSPRO) to encompass these effects. Further consideration from cognitive interviews and an expert panel led to reduction and modification of items. A 22-item SSPRO was field tested...
February 17, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28212519/early-calibration-of-the-hpa-axis-by-maternal-psychopathology
#11
Heidemarie Laurent
Given the central role of stress-responsive neurophysiology in mental and physical health, it is important to understand how particular patterns of stress responsivity may become entrained by the early caregiving environment. In this study we investigated links between maternal depression and anxiety symptom profiles and within-infant development of hypothalamic-pituitary-adrenal (HPA) axis responses from 6 to 18 months of life. Associations with infant cognitive and social-emotional development were also tested to gauge the adjustment implications of HPA response trajectories...
February 1, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28210948/the-effect-of-iron-nanoparticles-on-performance-of-cognitive-tasks-in-rats
#12
Elena Sheida, Olga Sipailova, Sergei Miroshnikov, Elena Sizova, Svyatoslav Lebedev, Elena Rusakova, Svetlana Notova
To assess the influence of 62.5 ± 0.6 nm iron nanoparticles on the status of central nervous system, a study was conducted on Wistar rats, which were subjected to abdominal injection of the studied nanoparticles at doses of 2 and 14 mg/kg. Based on the analysis of the structural and functional status of the cerebral cortex of rats, behavioral reactions of animals, and the elemental composition of the cerebral cortex, we investigated the nanoparticles' neurotoxic effect, whose degree and nature varied depending on the dosage and the time elapsed after the injection...
February 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28208063/white-matter-lesions-and-the-cholinergic-deficit-in-aging-and-mild-cognitive-impairment
#13
Nils Richter, Anne Michel, Oezguer A Onur, Lutz Kracht, Markus Dietlein, Marc Tittgemeyer, Bernd Neumaier, Gereon R Fink, Juraj Kukolja
In Alzheimer's disease (AD), white matter lesions (WMLs) are associated with an increased risk of progression from mild cognitive impairment (MCI) to dementia, while memory deficits have, at least in part, been linked to a cholinergic deficit. We investigated the relationship between WML load assessed with the Scheltens scale, cerebral acetylcholinesterase (AChE) activity measured with [(11)C]N-methyl-4-piperidyl acetate PET, and neuropsychological performance in 17 patients with MCI due to AD and 18 cognitively normal older participants...
January 18, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28207863/identification-of-age-dependent-motor-and-neuropsychological-behavioural-abnormalities-in-a-mouse-model-of-mucopolysaccharidosis-type-ii
#14
Hélène F E Gleitz, Claire O'Leary, Rebecca J Holley, Brian W Bigger
Severe mucopolysaccharidosis type II (MPS II) is a progressive lysosomal storage disease caused by mutations in the IDS gene, leading to a deficiency in the iduronate-2-sulfatase enzyme that is involved in heparan sulphate and dermatan sulphate catabolism. In constitutive form, MPS II is a multi-system disease characterised by progressive neurocognitive decline, severe skeletal abnormalities and hepatosplenomegaly. Although enzyme replacement therapy has been approved for treatment of peripheral organs, no therapy effectively treats the cognitive symptoms of the disease and novel therapies are in development to remediate this...
2017: PloS One
https://www.readbyqxmd.com/read/28205135/apium-graveolens-extract-influences-mood-and-cognition-in-healthy-mice
#15
Phetcharat Boonruamkaew, Wanida Sukketsiri, Pharkphoom Panichayupakaranant, Wijittra Kaewnam, Supita Tanasawet, Varomyalin Tipmanee, Pilaiwanwadee Hutamekalin, Pennapa Chonpathompikunlert
Apium graveolens is a food flavoring which possesses various health promoting effects. This study investigates the effect of a sub-acute administration of A. graveolens on cognition and anti-depression behaviors via antioxidant and related neurotransmitter systems in mice brains. Cognition and depression was assessed by various models of behavior. The antioxidant system of glutathione peroxidase (GPx), % inhibition of superoxide anion (O2(-)), and lipid peroxidation were studied. In addition, neurochemical parameters including acetylcholinesterase (AChE) and monoamine oxidase-type A (MAO-A) were also evaluated...
February 15, 2017: Journal of Natural Medicines
https://www.readbyqxmd.com/read/28203479/metformin-impairs-spatial-memory-and-visual-acuity-in-old-male-mice
#16
Nopporn Thangthaeng, Margaret Rutledge, Jessica M Wong, Philip H Vann, Michael J Forster, Nathalie Sumien
Metformin is an oral anti-diabetic used as first-line therapy for type 2 diabetes. Because benefits of metformin extend beyond diabetes to other age-related pathology, and because its effect on gene expression profiles resembles that of caloric restriction, metformin has a potential as an anti-aging intervention and may soon be assessed as an intervention to extend healthspan. However, beneficial actions of metformin in the central nervous system have not been clearly established. The current study examined the effect of chronic oral metformin treatment on motor and cognitive function when initiated in young, middle-aged, or old male mice...
February 2017: Aging and Disease
https://www.readbyqxmd.com/read/28203201/modulation-of-synaptic-plasticity-in-the-cortex-needs-to-understand-all-the-players
#17
REVIEW
Claire N J Meunier, Pascal Chameau, Philippe M Fossier
The prefrontal cortex (PFC) is involved in cognitive tasks such as working memory, decision making, risk assessment and regulation of attention. These functions performed by the PFC are supposed to rely on rhythmic electrical activity generated by neuronal network oscillations determined by a precise balance between excitation and inhibition balance (E/I balance) resulting from the coordinated activities of recurrent excitation and feedback and feedforward inhibition. Functional alterations in PFC functions have been associated with cognitive deficits in several pathologies such as major depression, anxiety and schizophrenia...
2017: Frontiers in Synaptic Neuroscience
https://www.readbyqxmd.com/read/28197083/balb-c-mice-can-learn-touchscreen-visual-discrimination-and-reversal-tasks-faster-than-c57bl-6-mice
#18
Karly M Turner, Christopher G Simpson, Thomas H J Burne
Touchscreen technology is increasingly being used to characterize cognitive performance in rodent models of neuropsychiatric disorders. Researchers are attracted to the automated system and translational potential for touchscreen-based tasks. However, training time is extensive and some mouse strains have struggled to learn touchscreen tasks. Here we compared the performance of commonly used C57BL/6 mice against the BALB/c mice, which are considered a poor performing strain, using a touchscreen task. BALB/c and C57BL/6 mice were trained to operate the touchscreens before learning a visual discrimination (VD) and reversal task...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28196430/first-in-human-trial-of-a-type-i-positive-allosteric-modulator-of-alpha7-nicotinic-acetylcholine-receptors-pharmacokinetics-safety-and-evidence-for-neurocognitive-effect-of-avl-3288
#19
Kelvin W Gee, Ann Olincy, Richard Kanner, Lynn Johnson, Derk Hogenkamp, Josette Harris, Minhtam Tran, Stephen A Edmonds, William Sauer, Ryan Yoshimura, Timothy Johnstone, Robert Freedman
Type I positive allosteric modulators (PAMs) of the alpha7-nicotinic receptor enhance its cholinergic activation while preserving the spatiotemporal features of synaptic transmission and the receptor's characteristic rapid desensitization kinetics. Alpha7-nicotinic receptor agonists have shown promise for improving cognition in schizophrenia, but longer-term trials have been disappointing. Therefore, the type I PAM AVL-3288 was evaluated for safety and preliminary evidence of neurocognitive effect in healthy human subjects...
February 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28195953/cross-validation-of-a-classification-system-for-persons-with-traumatic-brain-injury-in-the-posthospital-period
#20
Mark Sherer, Jennie Ponsford, Amelia Hicks, Luis Leon-Novelo, Esther Ngan, Angelle M Sander
OBJECTIVE: To (1) identify groupings of persons with traumatic brain injury (TBI) in the posthospital period in a cohort recruited in Australia; (2) compare groupings from the Australian cohort to groupings previously developed for a US cohort. SETTING: Rehabilitation centers in the US and Australia. PARTICIPANTS: A total of 170 persons with TBI from Australia and 504 persons with TBI from the United States. Participants were aged 18 to 64 years, greater than 6 months postinjury, had capacity to give consent, and had definitive contemporaneous medical evidence of TBI...
February 10, 2017: Journal of Head Trauma Rehabilitation
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