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Subjective cognitive impairment

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https://www.readbyqxmd.com/read/28812419/the-effects-of-exergaming-and-treadmill-training-on-gait-balance-and-cognition-in-a-person-with-parkinson-s-disease-a-case-study
#1
Srikant Vallabhajosula, Amy K McMillion, Jane E Freund
BACKGROUND: Parkinson's disease (PD) commonly impairs posture, gait, and cognition. Exercise in the form of aerobic activity as well as exergaming may improve motor ability and cognition in persons with PD. Exergaming and treadmill training can be a practical form of exercise within the home; however, there is minimal research on this combined multimodal intervention for persons with PD. OBJECTIVE: We investigated the effects of this combined intervention on cognition, balance, and gait in a person with PD through supervised lab sessions augmented by home-based sessions...
August 16, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28811866/preliminary-data-on-the-interaction-between-some-biometals-and-oxidative-stress-status-in-mild-cognitive-impairment-and-alzheimer-s-disease-patients
#2
Ioana-Miruna Balmuș, Stefan-Adrian Strungaru, Alin Ciobica, Mircea-Nicusor Nicoara, Romeo Dobrin, Gabriel Plavan, Cristinel Ștefănescu
Increased interest regarding the biometal mechanisms of action and the pathways in which they have regulatory roles was lately observed. Particularly, it was shown that biometal homeostasis dysregulation may lead to neurodegeneration including Alzheimer's disease, Parkinson disease, or prion protein disease, since important molecular signaling mechanisms in brain functions implicate both oxidative stress and redox active biometals. Oxidative stress could be a result of a breakdown in metal-ion homeostasis which leads to abnormal metal protein chelation...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28807816/mtor-in-down-syndrome-role-in-a%C3%A3-and-tau-neuropathology-and-transition-to-alzheimer-disease-like-dementia
#3
REVIEW
Fabio Di Domenico, Antonella Tramutola, Cesira Foppoli, Elisabeth Head, Marzia Perluigi, D Allan Butterfield
The mammalian target of rapamycin (mTOR) is a serine/threonine protein kinase involved in the regulation of protein synthesis and degradation, longevity and cytoskeletal formation. The mTOR pathway represents a key growth and survival pathway involved in several diseases such as cancer, obesity, cardiovascular disease and neurodegenerative diseases. Numerous studies linked the alterations of mTOR pathway to age-dependent cognitive decline, pathogenesis of Alzheimer disease (AD) and AD-like dementia in Down syndrome (DS)...
August 11, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28807493/homocysteine-and-cognitive-function-in-parkinson-s-disease
#4
Nicole Licking, Charles Murchison, Brenna Cholerton, Cyrus P Zabetian, Shu-Ching Hu, Thomas J Montine, Amie L Peterson-Hiller, Kathryn A Chung, Karen Edwards, James B Leverenz, Joseph F Quinn
INTRODUCTION: Increased plasma homocysteine (HC) is a risk factor for dementia in the general population. Levodopa therapy causes increased plasma HC, but it remains unclear whether elevated plasma HC is associated with cognitive impairment in Parkinson's disease (PD). METHODS: The study population includes all participants in the Pacific Northwest Udall Center (PANUC) Clinical cohort at the time of the study, consisting of 294 individuals with PD who had a standardized neuropsychological assessment and plasma collection for HC measurement...
August 9, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28807062/neuropsychiatric-characteristics-of-antiterrorist-operation-combatants-in-the-donbass-ukraine
#5
Konstantin N Loganovsky, Natalia A Zdanevich, Marina V Gresko, Donatella Marazziti, Tatiana K Loganovskaja
OBJECTIVE: The present paper aimed to explore the neuropsychiatric characteristics of the antiterrorism (ATO) combatants in the Donets Basin (Donbass) and to propose therapeutic strategies for managing their mental healthcare. METHODS: A total of 54 ATO combatants were included in our study and compared with four groups of subjects exposed to other emergencies, including the Chernobyl disaster and the war in Afghanistan. The neuropsychiatric features were assessed through psychopathological assessments, neurological examinations, and quantitative electroencephalography (qEEG)...
August 15, 2017: CNS Spectrums
https://www.readbyqxmd.com/read/28802959/a-combined-tract-based-spatial-statistics-and-voxel-based-morphometry-study-of-the-first-mri-scan-after-diagnosis-of-amyotrophic-lateral-sclerosis-with-subgroup-analysis
#6
A R Alruwaili, K Pannek, A Coulthard, R Henderson, N D Kurniawan, P McCombe
BACKGROUND AND PURPOSE: This study aims to compare the cortical and subcortical deep gray matter (GM) and white matter (WM) of ALS subjects and controls and to compare ALS subjects with (ALScog) and without (ALSnon-cog) cognitive impairment. MATERIALS AND METHODS: The study was performed in 30 ALS subjects, and 19 healthy controls. Structural T1- and diffusion-weighted MRI data were analyzed using voxel-based morphometry (VBM) and tract-based spatial statistics (TBSS)...
August 9, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28802897/the-different-effects-of-lithium-and-tamoxifen-on-memory-formation-and-the-levels-of-neurotrophic-factors-in-the-brain-of-male-and-female-rats
#7
Samira S Valvassori, Cenita Borges, Roger B Varela, Daniela V Bavaresco, Guilherme Bianchini, Edemilson Mariot, Camila O Arent, Wilson R Resende, Josiane Budni, João Quevedo
Lithium (Li) is a mood-stabilizing drug used in the treatment of bipolar disorder (BD). Recently, preclinical studies have demonstrated the potential of tamoxifen (TMX) in the treatment of acute episodes of BD. However, the prolonged use of TMX for mood disorders treatment is controversial. In this study, we evaluated the effects of TMX or Li on cognitive behavior, as well as the levels of neurotrophic factors in the brain of male and female rats. Male and female Wistar rats received administrations of water (control group), TMX or Li via gavage for a period of 28 days; the rats were then subjected to the open-field test (to evaluate spontaneous locomotion), and the novel object recognition and step-down inhibitory avoidance tests (to evaluate cognition)...
August 9, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28802628/physical-activity-domains-and-cognitive-function-over-three-years-in-older-adults-with-subjective-memory-complaints-secondary-analysis-from-the-mapt-trial
#8
Philipe de Souto Barreto, Sandrine Andrieu, Yves Rolland, Bruno Vellas
OBJECTIVES: We aimed to examine the associations of physical activity (PA) domains (i.e., PA in leisure-time (LTPA), for housework (HPA), or for gardening (GPA)) with cognitive function in older adults with subjective memory complaints (no-dementia) and to investigate if those associations were dependent on the status of apolipoprotein E allele 4 (APOE4), omega-3 levels and mild cognitive impairment (MCI). DESIGN: Observational prospective secondary analysis using longitudinal data from a randomized controlled trial...
July 26, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28801245/episodic-future-thinking-and-future-based-decision-making-in-a-case-of-retrograde-amnesia
#9
Flavia De Luca, Francesca Benuzzi, Elena Bertossi, Davide Braghittoni, Giuseppe di Pellegrino, Elisa Ciaramelli
We investigated episodic future thinking (EFT) and future-based cognition and decision-making in patient SG, who developed a dense retrograde amnesia following hypoxia due to a cardiac arrest. Despite intact general cognitive and executive functioning, SG was unable to remember events from his entire lifetime. He had, however, relatively spared anterograde memory and general semantic knowledge. Voxel-based morphometry detected a reduction of gray matter in the thalamus, cerebellum and fusiform gyrus bilaterally, and, at a reduced threshold, in several regions of the autobiographical memory network, including the hippocampi...
August 9, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28800325/classification-of-alzheimer-s-disease-and-prediction-of-mild-cognitive-impairment-conversion-using-histogram-based-analysis-of-patient-specific-anatomical-brain-connectivity-networks
#10
Iman Beheshti, Norihide Maikusa, Morteza Daneshmand, Hiroshi Matsuda, Hasan Demirel, Gholamreza Anbarjafari
In this study, we investigated the early detection of Alzheimer's disease (AD) and mild cognitive impairment (MCI) conversion to AD through individual structural connectivity networks using structural magnetic resonance imaging (sMRI) data. In the proposed method, the cortical morphometry of individual gray matter images were used to construct structural connectivity networks. A statistical feature generation approach based on histogram-based feature generation procedure was proposed to represent a statistical-pattern of connectivity networks from a high-dimensional space into low-dimensional feature vectors...
August 8, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28799862/disrupted-topologic-efficiency-of-white-matter-structural-connectome-in-individuals-with-subjective-cognitive-decline
#11
Ni Shu, Xiaoni Wang, Qiuhui Bi, Tengda Zhao, Ying Han
Purpose To determine whether individuals with subjective cognitive decline (SCD), which is defined by memory complaints with normal performance at objective neuropsychologic examinations, exhibit disruptions of white matter (WM) connectivity and topologic alterations of the brain structural connectome. Materials and Methods Diffusion-tensor magnetic resonance imaging and graph theory approaches were used to investigate the topologic organization of the brain structural connectome in 36 participants with SCD (21 women: mean age, 62...
August 11, 2017: Radiology
https://www.readbyqxmd.com/read/28798682/a-novel-virtual-reality-based-training-protocol-for-the-enhancement-of-the-mental-frame-syncing-in-individuals-with-alzheimer-s-disease-a-development-of-concept-trial
#12
Silvia Serino, Elisa Pedroli, Cosimo Tuena, Gianluca De Leo, Marco Stramba-Badiale, Karine Goulene, Noemi G Mariotti, Giuseppe Riva
A growing body of evidence suggests that people with Alzheimer's Disease (AD) show compromised spatial abilities. In addition, there exists from the earliest stages of AD a specific impairment in "mental frame syncing," which is the ability to synchronize an allocentric viewpoint-independent representation (including object-to-object information) with an egocentric one by computing the bearing of each relevant "object" in the environment in relation to the stored heading in space (i.e., information about our viewpoint contained in the allocentric viewpoint-dependent representation)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28798659/enhanced-data-representation-by-kernel-metric-learning-for-dementia-diagnosis
#13
David Cárdenas-Peña, Diego Collazos-Huertas, German Castellanos-Dominguez
Alzheimer's disease (AD) is the kind of dementia that affects the most people around the world. Therefore, an early identification supporting effective treatments is required to increase the life quality of a wide number of patients. Recently, computer-aided diagnosis tools for dementia using Magnetic Resonance Imaging scans have been successfully proposed to discriminate between patients with AD, mild cognitive impairment, and healthy controls. Most of the attention has been given to the clinical data, provided by initiatives as the ADNI, supporting reliable researches on intervention, prevention, and treatments of AD...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28798397/sleep-mediates-the-association-between-homocysteine-and-oxidative-status-in-mild-cognitive-impairment
#14
Mayely P Sanchez-Espinosa, Mercedes Atienza, Jose L Cantero
Tremendous progress has been made over the last few years in understanding how sleep and amyloid-β (Aβ) cooperate to speed up the progression of Alzheimer's disease (AD). However, it remains unknown whether sleep deficits also interact with other risk factors that exacerbate the pathological cascade of AD. Based on evidence showing that higher levels of homocysteine (HCY) and sleep loss increase oxidative damage, we here investigate whether the relationship between HCY and total antioxidant capacity (TAC) is mediated by changes in objective sleep in healthy older (HO, N = 21) and mild cognitive impairment (MCI, N = 21) subjects...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798352/soluble-epoxide-hydrolase-inhibition-promotes-white-matter-integrity-and-long-term-functional-recovery-after-chronic-hypoperfusion-in-mice
#15
Yuxue Chen, Hao Tian, Ensheng Yao, Yeye Tian, Huaqiu Zhang, Li Xu, Zhiyuan Yu, Yongkang Fang, Wei Wang, Peng Du, Minjie Xie
Chronic cerebral hypoperfusion induced cerebrovascular white matter lesions (WMLs) are closely associated with cognitive impairment and other neurological deficits. The mechanism of demyelination in response to hypoperfusion has not yet been fully clarified. Soluble epoxide hydrolase (sEH) is an endogenous key enzyme in the metabolic conversion and degradation of P450 eicosanoids called epoxyeicosatrienoic acids. Inhibition of sEH has been suggested to represent a prototype "combination therapy" targeting multiple mechanisms of stroke injury with a single agent...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798225/ethical-issues-in-alzheimer-s-disease-research-involving-human-subjects
#16
Dena S Davis
As we aggressively pursue research to cure and prevent Alzheimer's disease, we encounter important ethical challenges. None of these challenges, if handled thoughtfully, would pose insurmountable barriers to research. But if they are ignored, they could slow the research process, alienate potential study subjects and do damage to research recruits and others. These challenges are (1) the necessity of very large cohorts of research subjects, recruited for lengthy studies, probably ending only in the subjects' death; (2) the creation of cohorts of 'study ready' volunteers, many of whom will be competent to consent at the beginning of the process, but move into cognitive impairment later; (3) reliance on adaptive trial design, creating challenges for informed consent, equipoise and justice; (4) the use of biomarkers and predictive tests that describe risk rather than certainty, and that can threaten participants' welfare if the information is obtained by insurance companies or long-term care providers; (5) the use of study partners that creates unique risks of harm to the relationship of subject and study partner...
August 10, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28797640/a-comprehensive-literature-review-of-chronic-pain-and-memory
#17
REVIEW
Stéphanie Mazza, Maud Frot, Amandine E Rey
Chronic pain patients often complain of their "poor memory" and numerous studies objectively confirmed such difficulties in reporting working memory (WM) and long-term memory (LTM) dysfunctions. This paper provides a comprehensive review of the literature on memory impairment in chronic pain (CP) patients. Twenty-four observational studies evaluating WM or/and LTM in a chronic pain group and a control group were included in this review. Results showed that studies consistently reported a moderate decline, in both WM and LTM performances in CP patients...
August 7, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28797589/association-between-frailty-and-cognitive-impairment-cross-sectional-data-from-toulouse-frailty-day-hospital
#18
Bertrand Fougère, Matthieu Daumas, Matthieu Lilamand, Sandrine Sourdet, Julien Delrieu, Bruno Vellas, Gabor Abellan van Kan
BACKGROUND: A consensus panel, based on epidemiologic evidence, argued that physical frailty is often associated with cognitive impairment, possibly because of common underlying pathophysiological mechanisms. The concepts of cognitive frailty and motoric cognitive risk were recently proposed in literature and may represent a prodromal stage for neurodegenerative diseases. The purpose of this study was to analyze the relationship between cognition and the components of the physical phenotype of frailty...
August 7, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28797312/self-perceived-difficulties-in-everyday-function-precede-cognitive-decline-among-older-adults-in-the-active-study
#19
Sarah Tomaszewski Farias, Tania Giovannetti, Brennan R Payne, Michael Marsiske, George W Rebok, K Warner Schaie, Kelsey R Thomas, Sherry L Willis, Joseph M Dzierzewski, Frederick Unverzagt, Alden L Gross
OBJECTIVES: Careful characterization of how functional decline co-evolves with cognitive decline in older adults has yet to be well described. Most models of neurodegenerative disease postulate that cognitive decline predates and potentially leads to declines in everyday functional abilities; however, there is mounting evidence that subtle decline in instrumental activities of daily living (IADLs) may be detectable in older individuals who are still cognitively normal. METHODS: The present study examines how the relationship between change in cognition and change in IADLs are best characterized among older adults who participated in the ACTIVE trial...
August 11, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28794982/symptom-correlates-of-cerebral-blood-flow-following-acute-concussion
#20
Nathan W Churchill, Michael G Hutchison, Simon J Graham, Tom A Schweizer
Concussion is associated with significant symptoms within hours to days post-injury, including disturbances in physical function, cognition, sleep and emotion. However, little is known about how subjective impairments correlate with objective measures of cerebrovascular function following brain injury. This study examined the relationship between symptoms and cerebral blood flow (CBF) in individuals following sport-related concussion. Seventy university level athletes had CBF measured using Arterial Spin Labelling (ASL), including 35 with acute concussion and 35 matched controls and their symptoms were assessed using the Sport Concussion Assessment Tool 3 (SCAT3)...
2017: NeuroImage: Clinical
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