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Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring

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https://www.readbyqxmd.com/read/28435852/changes-in-metabolic-risk-factors-over-10%C3%A2-years-and-their-associations-with-late-life-cognitive-performance-the-multi-ethnic-study-of-atherosclerosis
#1
Timothy M Hughes, Suzanne Craft, Laura D Baker, Mark A Espeland, Stephen R Rapp, Kaycee M Sink, Alain G Bertoni, Gregory L Burke, Rebecca F Gottesman, Erin D Michos, José A Luchsinger, Annette L Fitzpatrick, Kathleen M Hayden
BACKGROUND: We examined whether changes in metabolic factors over 10 years were associated with cognitive performance. METHODS: Participants from the Multi-Ethnic Study of Atherosclerosis were followed since baseline (2000-2002) with five clinical examinations. At exam 5 (2010-2012), they received a short cognitive battery (Cognitive Abilities Screening Instrument [CASI], Digit Symbol Coding [DSC], and Digit Span [DS]). We examined associations between baseline metabolic factors and their changes over time before cognitive testing...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28435851/choroidal-thinning-alzheimer-s-disease-and-aging
#2
João Paulo Cunha, Rita Proença, Arnaldo Dias-Santos, Diana Melancia, Rita Almeida, Helena Águas, Bruno Oliveira Santos, Marta Alves, Joana Ferreira, Ana Luísa Papoila, Carlota Louro, António Castanheira-Dinis
INTRODUCTION: The purpose of this study was to measure and to compare macular choroidal thickness (CT) between patients with mild Alzheimer's disease (AD), patients without AD, and elderly patients. METHODS: CT was measured manually in 13 locations at 500-μm intervals of a horizontal and a vertical section from the fovea. Linear regression models were used to analyze the data. RESULTS: Fifty patients with a diagnosis of mild AD (73.1 years), 152 patients without AD (71...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28413821/cerebrospinal-fluid-biomarkers-for-alzheimer-s-disease-in-down-syndrome
#3
Alain D Dekker, Juan Fortea, Rafael Blesa, Peter P De Deyn
Down syndrome (DS), present in nearly six million people, is associated with an extremely high risk to develop Alzheimer's disease (AD). Amyloid-β and tau pathology are omnipresent from age 40 years onward, but clinical symptoms do not appear in all DS individuals. Dementia diagnostics is complex in this population, illustrating the great need for predictive biomarkers. Although blood biomarkers have not yet proven useful, cerebrospinal fluid (CSF) biomarkers (low amyloid-β42, high t-tau, and high p-tau) effectively contribute to AD diagnoses in the general population and are increasingly used in clinical practice...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28393099/reduced-future-oriented-decision-making-in-individuals-with-subjective-cognitive-decline-a-functional-mri-study
#4
Xiaochen Hu, Franziska Uhle, Klaus Fliessbach, Michael Wagner, Ying Han, Bernd Weber, Frank Jessen
INTRODUCTION: Subjective cognitive decline (SCD) refers to an at-risk state of Alzheimer's disease and subtle cognitive deficits that have been observed in this condition. Currently, it is unknown whether complex cognitive processes relevant to everyday life, such as future-oriented choice behavior, are also altered in SCD. METHODS: Twenty SCD participants and 24 control (CO) participants took part in a functional magnetic resonance imaging task on intertemporal decisions, with and without simultaneous episodic future imagination...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28378011/%C3%AE-scores-predict-mild-cognitive-impairment-and-alzheimer-s-disease-conversions-from-nondemented-states
#5
Donald R Royall, Raymond F Palmer
INTRODUCTION: We tested the latent variable "δ" (for "dementia")'s ability to predict conversion to "mild cognitive impairment" (MCI) and Alzheimer's disease (AD). METHODS: An ethnicity equivalent d homolog ("dEQ") was constructed in n = 1113 Mexican- American (MA) and n = 1958 non-Hispanic white (NHW) participants in the Texas Alzheimer's Research and Care Consortium. "Normal Controls" (NC) (n = 1276) and MCI cases (n = 611) were followed annually for up to 6 years [m = 4...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28349120/variability-in-medication-taking-is-associated-with-cognitive-performance-in-nondemented-older-adults
#6
Johanna Austin, Krystal Klein, Nora Mattek, Jeffrey Kaye
Interventions to slow cognitive decline typically can do little to reverse decline. Thus, early detection methods are critical. However, tools like cognitive testing are time consuming and require costly expertise. Changes in activities of daily living such as medication adherence may herald the onset of cognitive decline before clinical standards. Here, we determine the relationship between medication adherence and cognitive function in preclinical older adults. We objectively assessed medication adherence in 38 older adults (mean age 86...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28349119/a-multinational-study-distinguishing-alzheimer-s-and-healthy-patients-using-cerebrospinal-fluid-tau-a%C3%AE-42-cutoff-with-concordance-to-amyloid-positron-emission-tomography-imaging
#7
Yi Mo, Julie Stromswold, Kimberly Wilson, Daniel Holder, Cyrille Sur, Omar Laterza, Mary J Savage, Arie Struyk, Philip Scheltens, Charlotte E Teunissen, James Burke, S Lance Macaulay, Geir Bråthen, Sigrid Botne Sando, Linda R White, Christy Weiss, Arturo Cowes, Michele M Bush, Ganga DeSilva, David G Darby, Stephanie R Rainey-Smith, Jackie Surls, Eileen Sagini, Michael Tanen, Amy Altman, Johan Luthman, Michael F Egan
INTRODUCTION: Changes in cerebrospinal fluid (CSF) tau and amyloid β (Aβ)42 accompany development of Alzheimer's brain pathology. Robust tau and Aβ42 immunoassays were developed to establish a tau/Aβ42 cutoff distinguishing mild-to-moderate Alzheimer's disease (AD) subjects from healthy elderly control (HC) subjects. METHODS: A CSF tau/Aβ42 cutoff criteria was chosen, which distinguished the groups and maximized concordance with amyloid PET. Performance was assessed using an independent validation cohort...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28337476/cerebrospinal-fluid-biomarker-examination-as-a-tool-to-discriminate-behavioral-variant-frontotemporal-dementia-from-primary-psychiatric%C3%A2-disorders
#8
Everard G B Vijverberg, Annemiek Dols, Welmoed A Krudop, Marta Del Campo Milan, Cora J Kerssens, Flora Gossink, Niels D Prins, Max L Stek, Philip Scheltens, Charlotte E Teunissen, Yolande A L Pijnenburg
INTRODUCTION: To prospectively determine the diagnostic value of cerebrospinal fluid (CSF) levels total-tau (tau) to amyloid-β1-42 ratio (Aβ1-42) ratio (tau/Aβ1-42 ratio), phosphorylated-tau (p-tau) to tau ratio (p-tau/tau ratio), neurofilament light chain (NfL) and YKL40 in the late-onset frontal lobe syndrome, in particular for the differential diagnosis of behavioral variant frontotemporal dementia (bvFTD) versus primary psychiatric disorders (PSY). METHOD: We included patients with a multidisciplinary 2-year-follow-up diagnosis of probable/definite bvFTD (n = 22) or PSY (n = 25), who underwent a detailed neuropsychiatric clinical examination, neuropsychological test battery, and magnetic resonance imaging at baseline...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28337475/age-at-injury-is-associated-with-the-long-term-cognitive-outcome-of-traumatic-brain-injuries
#9
Wei Li, Shannon L Risacher, Thomas W McAllister, Andrew J Saykin
INTRODUCTION: The association between age at injury (AAI) and long-term cognitive outcome of traumatic brain injuries (TBI) is debatable. METHODS: Eligible participants with a history of TBI from Alzheimer's Disease Neuroimaging Initiative were divided into a childhood TBI (cTBI) group (the AAI ≤ 21 years old) and an adult TBI (aTBI) group (the AAI > 21 years old). RESULTS: The cTBI group has a higher Everyday Cognition total score than the aTBI group...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28317009/development-of-an-instrument-to-assess-social-functioning-in-dementia-the-social-functioning-in-dementia-scale-sf-dem
#10
Andrew Sommerlad, David Singleton, Rebecca Jones, Sube Banerjee, Gill Livingston
INTRODUCTION: Social functioning is a core domain in the life of people with dementia, but there is no accepted instrument to measure it. We aimed to develop the Social Functioning in Dementia (SF-DEM) scale and test its psychometric properties for assessing social function in people with dementia. METHODS: We interviewed people with mild dementia and family caregivers to develop patient and caregiver-rated SF-DEM versions and refined them through interviews with health care professionals...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28289701/identifying-memory-impairment-and-early-dementia-in-primary-care
#11
Ellen Grober, Dorothy Wakefield, Amy R Ehrlich, Peter Mabie, Richard B Lipton
INTRODUCTION: This study examined the operating characteristics of two-stage case finding to identify memory impairment and very mild dementia. METHODS: Primary care patients underwent two-stage testing and a subsequent diagnostic assessment to assess outcomes. Patients who screen positive for subjective cognitive decline on the Informant Questionnaire on Cognitive Decline in the Elderly undergo memory testing with the Free and Cued Selective Reminding Test with Immediate Recall...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28289700/apolipoproteins-and-their-subspecies-in-human-cerebrospinal-fluid-and-plasma
#12
Manja Koch, Jeremy D Furtado, Kim Falk, Frank Leypoldt, Kenneth J Mukamal, Majken K Jensen
INTRODUCTION: Subspecies of apolipoproteins can be defined by fractionating apolipoproteins based on the presence and absence of coexisting apolipoproteins. METHODS: We determined age- and sex-adjusted correlations of enzyme-linked immunosorbent assay-measured plasma and cerebrospinal fluid (CSF) apolipoproteins (apoA-I, apoC-III, apoE, and apoJ) or apolipoprotein subspecies (apoA-I with and without apoC-III, ApoE, or apoJ; apoE with and without apoC-III or apoJ) in 22 dementia-free participants...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28275702/pathophysiologic-relationship-between-alzheimer-s-disease-cerebrovascular-disease-and-cardiovascular-risk-a-review-and-synthesis
#13
REVIEW
Cláudia Y Santos, Peter J Snyder, Wen-Chih Wu, Mia Zhang, Ana Echeverria, Jessica Alber
As the population ages due to demographic trends and gains in life expectancy, the incidence and prevalence of dementia increases, and the need to understand the etiology and pathogenesis of dementia becomes ever more urgent. Alzheimer's disease (AD), the most common form of dementia, is a complex disease, the mechanisms of which are poorly understood. The more we learn about AD, the more questions are raised about our current conceptual models of disease. In the absence of a cure or the means by which to slow disease progress, it may be prudent to apply our current knowledge of the intersection between AD, cardiovascular disease, and cerebrovascular disease to foster efforts to delay or slow the onset of AD...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28275701/sleep-wake-cycle-disturbances-in-elderly-acute-general-medical-inpatients-longitudinal-relationship-to-delirium-and-dementia
#14
James M FitzGerald, Niamh O'Regan, Dimitrios Adamis, Suzanne Timmons, Colum P Dunne, Paula T Trzepacz, David J Meagher
INTRODUCTION: Sleep disturbances in elderly medical inpatients are common, but their relationship to delirium and dementia has not been studied. METHODS: Sleep and delirium status were assessed daily for a week in 145 consecutive newly admitted elderly acute general hospital patients using the Delirium Rating Scale-Revised-98 (DRS-R98), Diagnostic and Statistical Manual 5, and Richards-Campbell Sleep Quality Scale measures. The longitudinal relationship between DRS-R98 and Richards-Campbell Sleep Quality Scale sleep scores and delirium, also with dementia as a covariate, was evaluated using generalized estimating equation logistic regression...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28275700/peripheral-inflammatory-markers-indicate-microstructural-damage-within-periventricular-white-matter-hyperintensities-in%C3%A2-alzheimer-s-disease-a-preliminary-report
#15
Walter Swardfager, Di Yu, Joel Ramirez, Hugo Cogo-Moreira, Gregory Szilagyi, Melissa F Holmes, Christopher J M Scott, Gustavo Scola, Pak C Chan, Jialun Chen, Parco Chan, Demetrios J Sahlas, Nathan Herrmann, Krista L Lanctôt, Ana C Andreazza, Jacqueline A Pettersen, Sandra E Black
INTRODUCTION: White matter hyperintensities (WMH) presumed to reflect cerebral small vessel disease and increased peripheral inflammatory markers are found commonly in Alzheimer's disease (AD), but their interrelationships remain unclear. METHODS: Inflammatory markers were assayed in 54 elderly participants (n = 16 with AD). Periventricular WMH were delineated from T1, T2/proton density, and fluid-attenuated magnetic resonance imaging using semiautomated fuzzy lesion extraction and coregistered with maps of fractional anisotropy (FA), a measure of microstructural integrity assessed using diffusion tensor imaging...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28275699/a-comparison-of-theoretical-and-statistically-derived-indices-for-predicting-cognitive-decline
#16
Holly Wilhalme, Naira Goukasian, Fransia De Leon, Angie He, Kristy S Hwang, Ellen Woo, David Elashoff, Yan Zhou, John M Ringman, Liana G Apostolova
INTRODUCTION: Both theoretical and statistically derived approaches have been used in research settings for predicting cognitive decline. METHODS: Fifty-eight cognitively normal (NC) and 71 mild cognitive impairment (MCI) subjects completed a comprehensive cognitive battery for up to 5 years of follow-up. Composite indices of cognitive function were derived using a classic theoretical approach and exploratory factor analysis (EFA). Cognitive variables comprising each factor were averaged to form the EFA composite indices...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28275698/retinal-thickness-in-alzheimer-s-disease-a-systematic-review-and%C3%A2-meta-analysis
#17
Jurre den Haan, Frank D Verbraak, Pieter Jelle Visser, Femke H Bouwman
INTRODUCTION: Retinal characteristics are increasingly recognized as biomarkers for neurodegenerative diseases. Retinal thickness measured by optical coherence tomography may reflect the presence of Alzheimer's disease (AD). We performed a meta-analysis on retinal thickness in AD and mild cognitive impairment (MCI) patients and healthy controls (HCs). METHODS: We selected 25 studies with measurements of retinal thickness including 887 AD patients, 216 MCI patients, and 864 HCs that measured retinal thickness...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28275697/a-robust-biomarker-of-large-scale-network-failure-in-alzheimer-s-disease
#18
Daniela A Wiepert, Val J Lowe, David S Knopman, Bradley F Boeve, Jonathan Graff-Radford, Ronald C Petersen, Clifford R Jack, David T Jones
INTRODUCTION: Biomarkers for Alzheimer's disease (AD) pathophysiology have been developed that focus on various levels of brain organization. However, no robust biomarker of large-scale network failure has been developed. Using the recently introduced cascading network failure model of AD, we developed the network failure quotient (NFQ) as a biomarker of this process. METHODS: We developed and optimized the NFQ using our recently published analyses of task-free functional magnetic resonance imaging data in clinically normal (n = 43) and AD dementia participants (n = 28) from the Alzheimer's Disease Neuroimaging Initiative...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28239641/macrovascular-and-microvascular-cerebral-blood-flow-in-adults-at-risk-for-alzheimer-s-disease
#19
Lindsay R Clark, Sara E Berman, Leonardo A Rivera-Rivera, Siobhan M Hoscheidt, Burcu F Darst, Corinne D Engelman, Howard A Rowley, Cynthia M Carlsson, Sanjay Asthana, Patrick Turski, Oliver Wieben, Sterling C Johnson
INTRODUCTION: Capillary hypoperfusion is reported in asymptomatic adults at-risk for Alzheimer's disease (AD), but the extent that can be explained by reduced flow in intracranial arteries is unknown. METHODS: One hundred fifty-five asymptomatic adults enriched for AD risk (mean age 61 years) completed arterial spin labeling (pcASL) and 4D-flow MRI sequences. Voxel-wise regression models investigated the relationship between mean flow in bilateral cerebral arteries and capillary perfusion, and tested potential moderators of this relationship...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28239640/serum-il-8-is-a-marker-of-white-matter-hyperintensities-in-patients-with-alzheimer-s-disease
#20
Yanan Zhu, Yuek Ling Chai, Saima Hilal, M Kamran Ikram, Narayanaswamy Venketasubramanian, Boon-Seng Wong, Christopher P Chen, Mitchell K P Lai
INTRODUCTION: Neuroinflammation and cerebrovascular disease (CeVD) have been implicated in cognitive impairment and Alzheimer's disease (AD). The present study aimed to examine serum inflammatory markers in preclinical stages of dementia and in AD, as well as to investigate their associations with concomitant CeVD. METHODS: We performed a cross-sectional case-control study including 96 AD, 140 cognitively impaired no dementia (CIND), and 79 noncognitively impaired participants...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
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