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https://www.readbyqxmd.com/read/28446656/effect-of-a-long-term-intensive-lifestyle-intervention-on-prevalence-of-cognitive-impairment
#1
Mark A Espeland, José A Luchsinger, Laura D Baker, Rebecca Neiberg, Steven E Kahn, Steven E Arnold, Rena R Wing, George L Blackburn, George Bray, Mary Evans, Helen P Hazuda, Robert W Jeffery, Valerie M Wilson, Jeanne M Clark, Mace Coday, Kathryn Demos-McDermott, John P Foreyt, Frank Greenway, James O Hill, Edward S Horton, John M Jakicic, Karen C Johnson, William C Knowler, Cora E Lewis, David M Nathan, Anne Peters, Xavier Pi-Sunyer, Henry Pownall, Thomas A Wadden, Stephen R Rapp
OBJECTIVE: To assess whether an average of 10 years of lifestyle intervention designed to reduce weight and increase physical activity lowers the prevalence of cognitive impairment among adults at increased risk due to type 2 diabetes and obesity or overweight. METHODS: Central adjudication of mild cognitive impairment and probable dementia was based on standardized cognitive test battery scores administered to 3,802 individuals who had been randomly assigned, with equal probability, to either the lifestyle intervention or the diabetes support and education control...
April 26, 2017: Neurology
https://www.readbyqxmd.com/read/28443508/nutritional-deficiency-in-early-life-facilitates-aging-associated-cognitive-decline
#2
Yu Kang, Yun Zhang, Zijuan Feng, Mingjing Liu, Yanhua Li, Huan Yang, Dan Wang, Lingling Zheng, Dandan Lou, Liangping Cheng, Chunjiang Chen, Weitao Zhou, Yi Feng, Xiaoyong Li, Jianzhong Duan, Mengjiao Yu, Shou Yang, Yuhang Liu, Xin Wang, Bo Deng, Chenghui Liu, Xiuqing Yao, Chi Zhu, Chunrong Liang, Xiaolong Zeng, Sisi Ren, Qunying Li, Yin Zhong, Yong Zhang, Jun Kang, Yong Yan, Huaqing Meng, Zhaohui Zhong, Weihui Zhou, Yanjiang Wang, Tingyu Li, Weihong Song
BACKGROUND: Nutrition is important for the fetal developmental programming. Nutritional deficiency in early life could increase the susceptibility to many aging-related disorders including cognitive decline. OBJECTIVE: Our study aims to investigate the effect of early famine exposure on aging-associated cognitive function. METHODS: We recruited 6790 subjects born between 1956 to 1964 during which the Great Chinese Famine occurred (1959-1961)...
April 24, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28443019/increased-diagnostic-accuracy-of-digital-vs-conventional-clock-drawing-test-for-discrimination-of-patients-in-the-early-course-of-alzheimer-s-disease-from-cognitively-healthy-individuals
#3
Stephan Müller, Oliver Preische, Petra Heymann, Ulrich Elbing, Christoph Laske
The conventional Clock Drawing Test (cCDT) is a rapid and inexpensive screening tool for detection of moderate and severe dementia. However, its usage is limited due to poor diagnostic accuracy especially in patients with mild cognitive impairment (MCI). The diagnostic value of a newly developed digital Clock Drawing Test (dCDT) was evaluated and compared with the cCDT in 20 patients with early dementia due to AD (eDAT), 30 patients with amnestic MCI (aMCI) and 20 cognitively healthy controls (HCs). Parameters assessed by dCDT were time while transitioning the stylus from one stroke to the next above the surface (i...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28441967/comparison-of-csf-markers-and-semi-quantitative-amyloid-pet-in-alzheimer-s-disease-diagnosis-and-in-cognitive-impairment-prognosis-using-the-adni-2-database
#4
Fayçal Ben Bouallègue, Denis Mariano-Goulart, Pierre Payoux
BACKGROUND: The relative performance of semi-quantitative amyloid positron emission tomography (PET) and cerebrospinal fluid (CSF) markers in diagnosing Alzheimer's disease (AD) and predicting the cognitive evolution of patients with mild cognitive impairment (MCI) is still debated. METHODS: Subjects from the Alzheimer's Disease Neuroimaging Initiative 2 with complete baseline cognitive assessment (Mini Mental State Examination, Clinical Dementia Rating [CDR] and Alzheimer's Disease Assessment Scale-Cognitive Subscale [ADAS-cog] scores), CSF collection (amyloid-β1-42 [Aβ], tau and phosphorylated tau) and (18)F-florbetapir scans were included in our cross-sectional cohort...
April 26, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28441649/home-based-physical-behavior-in-late-stage-parkinson-disease-dementia-differences-between-cognitive-subtypes
#5
Bernhard Cerff, Walter Maetzler, Patricia Sulzer, Malte Kampmeyer, Jos Prinzen, Markus A Hobert, Dominik Blum, Rob van Lummel, Silvia Del Din, Susanne Gräber, Daniela Berg, Inga Liepelt-Scarfone
BACKGROUND: For the early diagnosis of Parkinson disease dementia (PDD), objective home-based tools are needed to quantify even mild stages of dysfunction of the activities of daily living (ADL). OBJECTIVES: In this pilot study, home-based physical behavior was assessed to examine whether it is possible to distinguish mild cognitive impairment (PD-MCI) from PDD. METHODS: Fifty-five patients with mild to severe Parkinson disease (PD) participated in this cross-sectional study...
April 26, 2017: Neuro-degenerative Diseases
https://www.readbyqxmd.com/read/28441517/mild-cognitive-impairment-and-driving-does-in-vehicle-distraction-affect-driving-performance
#6
Ion N Beratis, Dimosthenis Pavlou, Eleonora Papadimitriou, Nikolaos Andronas, Dionysia Kontaxopoulou, Stella Fragkiadaki, George Yannis, Sokratis G Papageorgiou
OBJECTIVES: In-vehicle distraction is considered to be an important cause of road accidents. Drivers with Mild Cognitive Impairment (MCI), because of their attenuated cognitive resources, may be vulnerable to the effects of distraction; however, previous relevant research is lacking. The main objective of the current study was to explore the effect of in-vehicle distraction on the driving performance of MCI patients, by assessing their reaction time at unexpected incidents and accident probability...
April 22, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28438484/simultaneous-object-perception-deficits-are-related-to-reduced-visual-processing-speed-in-amnestic-mild-cognitive-impairment
#7
Adriana L Ruiz-Rizzo, Peter Bublak, Petra Redel, Timo Grimmer, Hermann J Müller, Christian Sorg, Kathrin Finke
Simultanagnosia, an impairment in simultaneous object perception, has been attributed to deficits in visual attention and, specifically, to processing speed. Increasing visual attention deficits manifest over the course of Alzheimer's disease (AD), where the first changes are present already in its symptomatic predementia phase: amnestic mild cognitive impairment (aMCI). In this study, we examined whether patients with aMCI due to AD show simultaneous object perception deficits and whether and how these deficits relate to visual attention...
April 4, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28438167/dependency-criterion-based-brain-pathological-age-estimation-of-alzheimer-s-disease-patients-with-mr-scans
#8
Yongming Li, Yuchuan Liu, Pin Wang, Jie Wang, Sha Xu, Mingguo Qiu
OBJECTIVES: Traditional brain age estimation methods are based on the idea that uses the real age as the training label. However, these methods ignore that there is a deviation between the real age and the brain age due to the accelerated brain aging. METHODS: This paper considers this deviation and obtains it by maximizing the correlation between the estimated brain age and the class label rather than by minimizing the difference between the estimated brain age and the real age...
April 24, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28436391/prediction-of-conversion-to-alzheimer-s-disease-with-longitudinal-measures-and-time-to-event-data
#9
Kan Li, Wenyaw Chan, Rachelle S Doody, Joseph Quinn, Sheng Luo
BACKGROUND: Identifying predictors of conversion to Alzheimer's disease (AD) is critically important for AD prevention and targeted treatment. OBJECTIVE: To compare various clinical and biomarker trajectories for tracking progression and predicting conversion from amnestic mild cognitive impairment to probable AD. METHODS: Participants were from the ADNI-1 study. We assessed the ability of 33 longitudinal biomarkers to predict time to AD conversion, accounting for demographic and genetic factors...
April 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28436344/inattention-tests-for-delirium
#10
Paul Regal
Voyer and colleagues (2016) report an interesting and important comparison of ten attention/concentration tests for DSM-5 delirium. I have a number of questions and comments as follows: (1) What training did the research assistants have? DSM-5 diagnosis is generally regarded as a decision by medical specialists. When the person has prior dementia, identifying delirium is a high-level medical skill. Behavioral and psychological symptoms of dementia can closely mimic delirium unless the examiner focuses on behavioral triggers and the speed of cognitive decline...
April 24, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28436184/delaying-cognitive-and-physical-decline-through-multidomain-interventions-for-residents-with-mild-to-moderate-dementia-in-dementia-care-units-in-taiwan-a-prospective-cohort-study
#11
Chih-Kuang Liang, Ming-Yueh Chou, Liang-Yu Chen, Kuei-Yu Wang, Shih-Yi Lin, Liang-Kung Chen, Yu-Te Lin, Tsung-Yun Liu, Ching-Hui Loh
AIM: To develop experimental multi-domain interventions for older people with mild-to-moderate dementia, and to evaluate the effect of delaying cognitive and physical decline, and improvement or prevention of geriatric syndromes during 1-year follow up. METHODS: Participants aged 65 years and older with mild-to-moderate dementia (clinical dementia rating [CDR] 1 or 2) were grouped as intervention in Jia-Li Veterans Home and usual care model in the community (Memory clinic)...
April 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28435933/the-c677t-variant-in-mthfr-modulates-associations-between-brain-integrity-mood-and-cognitive-functioning-in-old-age
#12
Florence F Roussotte, Xue Hua, Katherine L Narr, Gary W Small, Paul M Thompson
INTRODUCTION: The C677T functional variant in the methylene-tetrahydrofolate reductase (MTHFR) gene leads to reduced enzymatic activity and elevated blood levels of homocysteine. Hyperhomocysteinemia has been linked with higher rates of cardiovascular diseases, cognitive decline, and late-life depression. METHODS AND MATERIALS: Here, 3D magnetic resonance imaging data was analyzed from 738 individuals (age: 75.5 ± 6.8 years; 438 men/300 women) including 173 Alzheimer's patients, 359 subjects with mild cognitive impairment, and 206 healthy older adults, scanned as part of the Alzheimer's Disease Neuroimaging Initiative (ADNI)...
April 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28434429/association-between-sleep-disordered-breathing-and-nighttime-driving-performance-in-mild-cognitive-impairment
#13
Nathan Cross, Zoe Terpening, Shantel L Duffy, Simon J G Lewis, Ron Grunstein, Keith Wong, Sharon L Naismith
OBJECTIVES: The effect of sleep disordered breathing (SDB) on driving performance in older adults has not been extensively investigated, especially in those with mild cognitive impairment (MCI). The aim of this study was to examine the relationship between severity measures of SDB and a simulated driving task in older adults with and without MCI. METHODS: Nineteen older adults (age ≥50) meeting criteria for MCI and 23 age-matched cognitively intact controls underwent neuropsychological assessment and a driving simulator task in the evening before a diagnostic sleep study...
April 24, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28433649/chronic-nicotine-attenuates-behavioral-and-synaptic-plasticity-impairments-in-a-streptozotocin-model-of-alzheimer-s-disease
#14
Esteves Im, Lopes-Aguiar C, Rossignoli Mt, Ruggiero Rn, Broggini Acs, Bueno-Junior Ls, Kandratavicius L, Monteiro Mr, Romcy-Pereira Rn, Leite Jp
Brain glucose metabolism is altered in sporadic Alzheimer's disease (sAD), whose pathologies are reproduced in rodents by intracerebroventricular (icv) infusion of streptozotocin (STZ) in subdiabetogenic doses. The icv-STZ model also culminates in central cholinergic dysfunctions, which in turn are known to underlie both the sAD cognitive decline, and synaptic plasticity impairments. Considering the cognitive-enhancing potential of chronic nicotine (Nic), we investigated whether it attenuates icv-STZ-induced impairments in recognition memory and synaptic plasticity in a cognition-relevant substrate: the hippocampal CA1-medial prefrontal cortex (mPFC) pathway...
April 19, 2017: Neuroscience
https://www.readbyqxmd.com/read/28432077/aerobic-exercise-promotes-executive-functions-and-impacts-functional-neural-activity-among-older-adults-with-vascular-cognitive-impairment
#15
Chun Liang Hsu, John R Best, Jennifer C Davis, Lindsay S Nagamatsu, Shirley Wang, Lara A Boyd, Gy Robin Hsiung, Michelle W Voss, Janice Jennifer Eng, Teresa Liu-Ambrose
BACKGROUND: Vascular cognitive impairment (VCI) results from cerebrovascular disease, and worldwide, it is the second most common type of cognitive dysfunction. While targeted aerobic training is a promising approach to delay the progression of VCI by reducing cardiometabolic risk factors, few randomised controlled trials to date have specifically assessed the efficacy of aerobic training on cognitive and brain outcomes in this group at risk for functional decline. AIM: To examine the effect of moderate-intensity aerobic training on executive functions and functional neural activity among older adults with mild subcortical ischaemic VCI (SIVCI)...
April 21, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28431914/pain-trajectories-of-nursing-home-residents-nearing-death
#16
Genevieve N Thompson, Malcolm Doupe, R Colin Reid, Jennifer Baumbusch, Carole A Estabrooks
BACKGROUND/OBJECTIVES: Although examining point in time prevalence of pain among nursing home (NH) residents has value, there is a lack of evidence describing the actual changes (ie, trajectories) in pain that take place during their last 6 months of life. The main objective of this study is to describe the major pain trajectories experienced by NH residents during their last 6 months of life. DESIGN: Secondary analysis of Resident Assessment Instrument-Minimum Data Set (MDS) 2...
April 18, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28431612/xeroderma-pigmentosum-complementation-group-f-a-rare-cause-of-cerebellar-ataxia-with-chorea
#17
G Carré, C Marelli, M Anheim, C Geny, M Renaud, H R Rezvani, M Koenig, C Guissart, C Tranchant
The complementation group F of Xeroderma pigmentosum (XP-F) is rare in the Caucasian population, and usually devoid of neurological symptoms. We report two cases, both Caucasian, who exhibited progressive cerebellar ataxia, chorea, a mild subcortical frontal cognitive impairment, and in one case severe polyneuropathy. Brain MRI demonstrated cerebellar (2/2) and cortical (1/2) atrophy. Both patients had only mild sunburn sensitivity and no skin cancer. Mini-exome sequencing approach revealed in ERCC4, two heterozygous mutations, one of which was never described (c...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431288/longitudinal-whole-brain-atrophy-and-ventricular-enlargement-in-nondemented-parkinson-s-disease
#18
Elijah Mak, Li Su, Guy B Williams, Michael J Firbank, Rachael A Lawson, Alison J Yarnall, Gordon W Duncan, Brit Mollenhauer, Adrian M Owen, Tien K Khoo, David J Brooks, James B Rowe, Roger A Barker, David J Burn, John T O'Brien
We investigated whole-brain atrophy and ventricular enlargement over 18 months in nondemented Parkinson's disease (PD) and examined their associations with clinical measures and baseline CSF markers. PD subjects (n = 100) were classified at baseline into those with mild cognitive impairment (MCI; PD-MCI, n = 36) and no cognitive impairment (PD-NC, n = 64). Percentage of whole-brain volume change (PBVC) and ventricular expansion over 18 months were assessed with FSL-SIENA and ventricular enlargement (VIENA) respectively...
March 16, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28431177/altered-functional-connectivity-in-idiopathic-rapid-eye-movement-sleep-behavior-disorder-a-resting-state-eeg-study
#19
Jun-Sang Sunwoo, Sanghun Lee, Jung-Hoon Kim, Jung-Ah Lim, Tae-Joon Kim, Jung-Ick Byun, Min Hee Jeong, Kwang Su Cha, Jeong Woo Choi, Kyung Hwan Kim, Soon-Tae Lee, Keun-Hwa Jung, Kyung-Il Park, Kon Chu, Manho Kim, Sang Kun Lee, Ki-Young Jung
Study Objectives: Idiopathic rapid eye movement sleep behavior disorder (iRBD) is considered as a prodromal stage of synucleinopathy. Although loss of functional connectivity is implicated in neurodegenerative diseases, network characteristics of electroencephalography (EEG) in iRBD are unknown. Therefore, we evaluated resting-state EEG functional connectivity to identify the brain network changes in patients with iRBD. Methods: We prospectively enrolled 20 patients with polysomnography-confirmed iRBD and 16 control subjects...
April 18, 2017: Sleep
https://www.readbyqxmd.com/read/28428166/vascular-cognitive-impairment-in-a-memory-clinic-population-rationale-and-design-of-the-utrecht-amsterdam-clinical-features-and-prognosis-in-vascular-cognitive-impairment-trace-vci-study
#20
EDITORIAL
Jooske Marije Funke Boomsma, Lieza Geertje Exalto, Frederik Barkhof, Esther van den Berg, Jeroen de Bresser, Rutger Heinen, Huiberdina Lena Koek, Niels Daniël Prins, Philip Scheltens, Henry Chanoch Weinstein, Wiesje Maria van der Flier, Geert Jan Biessels
BACKGROUND: Vascular Cognitive Impairment (VCI) refers to cognitive dysfunction due to vascular brain injury, as a single cause or in combination with other, often neurodegenerative, etiologies. VCI is a broad construct that captures a heterogeneous patient population both in terms of cognitive and noncognitive symptoms and in terms of etiology and prognosis. This provides a challenge when applying this construct in clinical practice. OBJECTIVE: This paper presents the rationale and design of the TRACE-VCI study, which investigates the clinical features and prognosis of VCI in a memory clinic setting...
April 19, 2017: JMIR Research Protocols
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