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https://www.readbyqxmd.com/read/29782824/apoe-%C3%AE%C2%B54-associates-with-hippocampal-volume-learning-and-memory-across-the-spectrum-of-alzheimer-s-disease-and-dementia-with-lewy-bodies
#1
Usman Saeed, Saira S Mirza, Bradley J MacIntosh, Nathan Herrmann, Julia Keith, Joel Ramirez, Sean M Nestor, Qinggang Yu, Jo Knight, Walter Swardfager, Steven G Potkin, Ekaterina Rogaeva, Peter St George-Hyslop, Sandra E Black, Mario Masellis
INTRODUCTION: Although the apolipoprotein E ε4-allele (APOE-ε4) is a susceptibility factor for Alzheimer's disease (AD) and dementia with Lewy bodies (DLB), its relationship with imaging and cognitive measures across the AD/DLB spectrum remains unexplored. METHODS: We studied 298 patients (AD = 250, DLB = 48; 38 autopsy confirmed; NCT01800214) using neuropsychological testing, volumetric magnetic resonance imaging, and APOE genotyping to investigate the association of APOE-ε4 with hippocampal volume and learning/memory phenotypes, irrespective of diagnosis...
May 18, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29782389/development-of-a-novel-self-administered-cognitive-assessment-tool-and-normative-data-for-older-adults
#2
Raphael J Monsch, Amélie C Burckhardt, Manfred Berres, Alessandra E Thomann, Michael M Ehrensperger, Luzius A Steiner, Nicolai Goettel
BACKGROUND: Preexisting cognitive impairment in surgical patients is one of the leading risk factors for adverse cognitive outcomes such as postoperative delirium and postoperative cognitive dysfunction. We developed a self-administered tablet computer application intended to assess the individual risk for adverse postoperative cognitive outcomes. This cross-sectional study aimed to establish normative data for the tool. MATERIALS AND METHODS: Healthy volunteers aged 65 years and above were administered the Mini-Mental State Examination, Geriatric Depression Scale, and Consortium to Establish a Registry for Alzheimer's Disease-Neuropsychological Assessment Battery to assess cognitive health...
May 18, 2018: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/29782316/from-subjective-cognitive-decline-to-alzheimer-s-disease-the-predictive-role-of-neuropsychological-assessment-personality-traits-and-cognitive-reserve-a-7-year-follow-up-study
#3
Valentina Bessi, Salvatore Mazzeo, Sonia Padiglioni, Carolina Piccini, Benedetta Nacmias, Sandro Sorbi, Laura Bracco
The aim of this study was to evaluate the accuracy of neuropsychological assessment in predicting conversion from subjective cognitive decline (SCD) and mild cognitive impairment (MCI) to Alzheimer's disease (AD) and the effect of personality traits and cognitive reserve in progression from SCD to MCI. As part of a longitudinal, clinical-neuropsychological-genetic survey on SCD and MCI, 284 patients referred to our hospital between 1990 and 2017 were included. All patients underwent clinical-extensive neuropsychological evaluation and Apolipoprotein E genotyping; personality traits were assessed in a subgroup...
May 16, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29782314/a-retrospective-belgian-multi-center-mri-biomarker-study-in-alzheimer-s-disease-remember
#4
Ellis Niemantsverdriet, Annemie Ribbens, Christine Bastin, Florence Benoit, Bruno Bergmans, Jean-Christophe Bier, Roxanne Bladt, Lene Claes, Peter Paul De Deyn, Olivier Deryck, Bernard Hanseeuw, Adrian Ivanoiu, Jean-Claude Lemper, Eric Mormont, Gaëtane Picard, Eric Salmon, Kurt Segers, Anne Sieben, Dirk Smeets, Hanne Struyfs, Evert Thiery, Jos Tournoy, Eric Triau, Anne-Marie Vanbinst, Jan Versijpt, Maria Bjerke, Sebastiaan Engelborghs
BACKGROUND: Magnetic resonance imaging (MRI) acquisition/processing techniques assess brain volumes to explore neurodegeneration in Alzheimer's disease (AD). OBJECTIVE: We examined the clinical utility of MSmetrix and investigated if automated MRI volumes could discriminate between groups covering the AD continuum and could be used as a predictor for clinical progression. METHODS: The Belgian Dementia Council initiated a retrospective, multi-center study and analyzed whole brain (WB), grey matter (GM), white matter (WM), cerebrospinal fluid (CSF), cortical GM (CGM) volumes, and WM hyperintensities (WMH) using MSmetrix in the AD continuum...
May 16, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29781630/mental-orientation-a-new-approach-to-assessing-patients-across-the-alzheimer-s-disease-spectrum
#5
Gregory Peters-Founshtein, Michael Peer, Yanai Rein, Shlomzion Kahana Merhavi, Zeev Meiner, Shahar Arzy
OBJECTIVE: This study aims to assess the role of mental-orientation in the diagnosis of mild cognitive impairment and Alzheimer's disease using a novel task. METHOD: A behavioral study (Experiment 1) compared the mental-orientation task to standard neuropsychological tests in patients across the Alzheimer's disease spectrum. A functional MRI study (Experiment 2) in young adults compared activations evoked by the mental-orientation and standard-orientation tasks as well as their overlap with brain regions susceptible to Alzheimer's disease pathology...
May 21, 2018: Neuropsychology
https://www.readbyqxmd.com/read/29779432/performance-validity-in-older-adults-observed-versus-predicted-false-positive-rates-in-relation-to-number-of-tests-administered
#6
Jeremy J Davis
INTRODUCTION: This study examined false positive rates on embedded performance validity tests (PVTs) in older adults grouped by cognitive status. METHOD: The research design involved secondary analysis of data from the National Alzheimer's Coordinating Center database. Participants (N = 22,688) were grouped by cognitive status: normal (n = 10,319), impaired (n = 1,194), amnestic or nonamnestic mild cognitive impairment (MCI; n = 5,414), and dementia (n = 5,761)...
May 20, 2018: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/29778936/timed-instrumental-activities-of-daily-living-in-multiple-sclerosis-the-test-of-everyday-cognitive-ability-teca
#7
Leigh E Charvet, Michael T Shaw, Kathleen Sherman, Shannon Haas, Lauren B Krupp
OBJECTIVE: Cognitive impairment is a common symptom of multiple sclerosis (MS) that can lead to declines in daily functioning. Timed instrumental activities of daily living (TIADLs) have been useful to bridge between cognitive testing and real-world functioning in disorders such as Alzheimer's disease and other dementias. However, these have not been standardized for general use, and the tasks that are typically employed have not been sensitive to the detection of milder forms of cognitive deficits...
May 3, 2018: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29776682/the-impact-of-apolipoprotein-e-alleles-on-cognitive-performance-in-patients-with-parkinson-s-disease
#8
Anna Pierzchlińska, Monika Białecka, Mateusz Kurzawski, Jarosław Sławek
Apolipoprotein E (ApoE) is a vital component of several lipoproteins and plays a major role in lipid metabolism. APOE gene comprises of three alleles determined by two single nucleotide polymorphisms (rs429358 and rs7412) resulting in the protein isoforms, among which ApoE4 is a confirmed risk factor for Alzheimer's Disease. However, the impact of APOE genotypes on Parkinson's Disease Dementia (PDD) is still inconclusive. The PDD diagnostic criteria are very inconsistent, and could be complemented with genetic factors...
May 5, 2018: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29775888/therapeutic-impact-of-rhuepo-on-abnormal-platelet-app-bace-1-presenilin-1-adam-10-and-a%C3%AE-expressions-in-chronic-kidney-disease-patients-with-cognitive-dysfunction-like-alzheimer-s-disease-a-pilot-study
#9
Vinothkumar G, Krishnakumar S, Sureshkumar, Shivashekar G, Sreedhar S, Preethikrishnan, Dinesh S, Sundaram A, Balakrishnan D, Riya, Venkataraman P
BACKGROUND: Cognitive dysfunction is reported to be a major cause of morbidity in chronic kidney disease (CKD). The senile plaques (SPs) in the brain are one of the most pathophysiological characteristics of cognitive dysfunction and its major constituent amyloid β (Aβ) released from amyloid precursor protein (APP) by β (BACE1) and γ (presenilin 1) secretases . Platelets contain more than 95% of the circulating APP and implicate as a candidate biomarker for cognitive decline. Recombinant human erythropoietin (rHuEPO) is a standard therapy for anemia in CKD and also acts as a neuroprotective agent...
May 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29764279/the-modified-telephone-administered-minnesota-cognitive-acuity-screen-for-mild-cognitive-impairment
#10
Sarah Pillemer, George D Papandonatos, Cara Crook, Brian R Ott, Geoffrey Tremont
OBJECTIVE: This study aimed to compare the sensitivity and specificity of a modified version of the Minnesota Cognitive Acuity Screen (MCAS-m), by adding learning and recognition memory components, to the original version MCAS to distinguish amnestic mild cognitive impairment (aMCI) from healthy controls (HCs). METHODS/DESIGN: A total of 30 individuals with aMCI and 30 HCs underwent neuropsychological testing, neurologic examination, laboratory, and brain imaging tests...
January 1, 2018: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/29758938/influence-of-lewy-pathology-on-alzheimer-s-disease-phenotype-a-retrospective-clinico-pathological-study
#11
Jennifer Roudil, Vincent Deramecourt, Boris Dufournet, Bruno Dubois, Mathieu Ceccaldi, Charles Duyckaerts, Florence Pasquier, Thibaud Lebouvier
BACKGROUND: Studies have shown the frequent coexistence of Lewy pathology (LP) in AD. OBJECTIVE: The aim of this study was to determine the influence of LP on the clinical and cognitive phenotype in a cohort of patients with a neuropathological diagnosis of AD. METHODS: We reviewed neuropathologically proven AD cases, reaching Braak stages V and VI in the brain banks of Lille and Paris between 1993 and 2016, and classified them according to LP extension (amygdala, brainstem, limbic, or neocortical)...
May 11, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29754989/the-brain-health-registry-an-internet-based-platform-for-recruitment-assessment-and-longitudinal-monitoring-of-participants-for-neuroscience-studies
#12
Michael W Weiner, Rachel Nosheny, Monica Camacho, Diana Truran-Sacrey, R Scott Mackin, Derek Flenniken, Aaron Ulbricht, Philip Insel, Shannon Finley, Juliet Fockler, Dallas Veitch
INTRODUCTION: Recruitment, assessment, and longitudinal monitoring of participants for neuroscience studies and clinical trials limit the development of new treatments. Widespread Internet use allows data capture from participants in an unsupervised setting. The Brain Health Registry, a website and online registry, collects data from participants and their study partners. METHODS: The Brain Health Registry obtains self and study partner report questionnaires and neuropsychological data, including the Cogstate Brief Battery, Lumos Labs Neurocognitive Performance Test, and MemTrax Memory Test...
May 8, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29754119/a-pilot-study-and-brief-overview-of-rehabilitation-via-virtual-environment-in-patients-suffering-from-dementia
#13
Th Fasilis, P Patrikelis, A Siatouni, A Alexoudi, A Veretzioti, L Zachou, S-St Gatzonis
Dementia is one of the increasing problems of modern societies. The immediate cure is not a possible solution, at least at the moment, but science has found a number of new ways to retard and under specific conditions to halt its development. A potential, and constantly evolving scientific field is the use of Computerized Cognitive Rehabilitation (CCR) and Virtual Environments (Vr.E). According to the existing literature, subjecting patients to various neuro-rehabilitative conditions within 3D virtual environments, allows them to obtain significant therapeutic benefits in which both transferability and durations over time are observed, in relation to the training period of the intervention...
January 2018: Psychiatrikē, Psychiatriki
https://www.readbyqxmd.com/read/29752516/dual-tracer-tau-pet-imaging-reveals-different-molecular-targets-for-11-c-thk5351-and-11-c-pbb3-in-the-alzheimer-brain
#14
Konstantinos Chiotis, Per Stenkrona, Ove Almkvist, Vladimir Stepanov, Daniel Ferreira, Ryosuke Arakawa, Akihiro Takano, Eric Westman, Andrea Varrone, Nobuyuki Okamura, Hitoshi Shimada, Makoto Higuchi, Christer Halldin, Agneta Nordberg
PURPOSE: Several tau PET tracers have been developed, but it remains unclear whether they bind to the same molecular target on the heterogeneous tau pathology. In this study we evaluated the binding of two chemically different tau-specific PET tracers (11 C-THK5351 and 11 C-PBB3) in a head-to-head, in vivo, multimodal design. METHODS: Nine patients with a diagnosis of mild cognitive impairment or probable Alzheimer's disease and cerebrospinal fluid biomarker evidence supportive of the presence of Alzheimer's disease brain pathology were recruited after thorough clinical assessment...
May 12, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29751288/predicted-sequence-of-cortical-tau-and-amyloid-%C3%AE-deposition-in-alzheimer-disease-spectrum
#15
Hanna Cho, Hye Sun Lee, Jae Yong Choi, Jae Hoon Lee, Young Hoon Ryu, Myung Sik Lee, Chul Hyoung Lyoo
We investigated sequential order between tau and amyloid-β (Aβ) deposition in Alzheimer disease spectrum using a conditional probability method. Two hundred twenty participants underwent 18 F-flortaucipir and 18 F-florbetaben positron emission tomography scans and neuropsychological tests. The presence of tau and Aβ in each region and impairment in each cognitive domain were determined by Z-score cutoffs. By comparing pairs of conditional probabilities, the sequential order of tau and Aβ deposition were determined...
April 17, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29747683/reduced-penetrance-of-the-psen1-h163y-autosomal-dominant-alzheimer-mutation-a-22-year-follow-up-study
#16
Steinunn Thordardottir, Elena Rodriguez-Vieitez, Ove Almkvist, Daniel Ferreira, Laure Saint-Aubert, Anne Kinhult-Ståhlbom, Håkan Thonberg, Michael Schöll, Eric Westman, Anders Wall, Maria Eriksdotter, Henrik Zetterberg, Kaj Blennow, Agneta Nordberg, Caroline Graff
BACKGROUND: The range of onset ages within some PSEN1 families is wide, and a few cases of reduced penetrance of PSEN1 mutations have been reported. However, published data on reduced penetrance have been limited to clinical histories, often collected retrospectively and lacking biomarker information. We present a case of reduced penetrance of the PSEN1 H163Y mutation in a carrier prospectively followed for 22 years. METHODS: Two brothers (A and B), both carriers of the H163Y mutation, were followed between 1995 and 2017...
May 10, 2018: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/29747584/differentiation-of-neuropsychological-features-between-posterior-cortical-atrophy-and-early-onset-alzheimer-s-disease
#17
Jieying Li, Liyong Wu, Yi Tang, Aihong Zhou, Fen Wang, Yi Xing, Jianping Jia
BACKGROUND: Posterior cortical atrophy (PCA) is a group of clinical syndromes characterized by visuospatial and visuoperceptual impairment, with memory relatively preserved. Although PCA is pathologically almost identical to Alzheimer's disease (AD), they have different cognitive features. Those differences have only rarely been reported in any Chinese population. The purpose of the study is to establish neuropsychological tests that distinguish the clinical features of PCA from early onset AD (EOAD)...
May 10, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29742242/argentina-alzheimer-s-disease-neuroimaging-initiative-arg-adni-neuropsychological-evolution-profile-after-one-year-follow-up
#18
Patricio Chrem Méndez, Ismael Calandri, Federico Nahas, María Julieta Russo, Ignacio Demey, María Eugenia Martín, María Florencia Clarens, Paula Harris, Fernanda Tapajoz, Jorge Campos, Ezequiel I Surace, Horacio Martinetto, Fernando Ventrice, Gabriela Cohen, Silvia Vázquez, Carlos Romero, Salvador Guinjoan, Ricardo F Allegri, Gustavo Sevlever
The Argentina-Alzheimer's disease neuroimaging initiative (Arg-ADNI) study is a longitudinal prospective cohort of 50 participants at a single institution in Buenos Aires, Argentina. Longitudinal assessments on a neuropsychological test battery were performed on 15 controls, 24 mild cognitive impairment (MCI) patients and 12 Alzheimer's disease (AD) dementia patients. In our study population, there was a high prevalence of positive AD biomarkers in the AD group, 92.3% (12/13); and a low prevalence in the normal controls, 20%; almost half (48%) of the patients diagnosed with MCI had positive amyloid detection...
April 2018: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/29735156/subjective-cognitive-decline-is-associated-with-altered-default-mode-network-connectivity-in-individuals-with-a-family-history-of-alzheimer-s-disease
#19
Sander C J Verfaillie, Alexa Pichet Binette, Etienne Vachon-Presseau, Shirin Tabrizi, Mélissa Savard, Pierre Bellec, Rik Ossenkoppele, Philip Scheltens, Wiesje M van der Flier, John C S Breitner, Sylvia Villeneuve
BACKGROUND: Both subjective cognitive decline (SCD) and a family history of Alzheimer's disease (AD) portend risk of brain abnormalities and progression to dementia. Posterior default mode network (pDMN) connectivity is altered early in the course of AD. It is unclear whether SCD predicts similar outcomes in cognitively normal individuals with a family history of AD. METHODS: We studied 124 asymptomatic individuals with a family history of AD (age 64 ± 5 years)...
May 2018: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29734264/the-accuracy-of-ineco-frontal-screening-in-the-diagnosis-of-executive-dysfunction-in-frontotemporal-dementia-and-alzheimer-disease
#20
Valéria S Bahia, Mário A Cecchini, Luciana Cassimiro, Rene Viana, Thais B Lima-Silva, Leonardo Cruz de Souza, Viviane Amaral Carvalho, Henrique C Guimarães, Paulo Caramelli, Márcio L F Balthazar, Benito Damasceno, Sônia M D Brucki, Ricardo Nitrini, Mônica S Yassuda
INTRODUCTION: Executive dysfunction is a common symptom in neurodegenerative disorders and is in need of easy-to-apply screening tools that might identify it. The aims of the present study were to examine some of the psychometric characteristics of the Brazilian version of the INECO frontal screening (IFS), and to investigate its accuracy to diagnose executive dysfunction in dementia and its accuracy to differentiate Alzheimer disease (AD) from the behavioral variant of frontotemporal dementia (bvFTD)...
May 4, 2018: Alzheimer Disease and Associated Disorders
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