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

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https://www.readbyqxmd.com/read/28856235/regional-tau-deposition-and-subregion-atrophy-of-medial-temporal-structures-in-early-alzheimer-s-disease-a-combined-positron-emission-tomography-magnetic-resonance-imaging-study
#1
Daichi Sone, Etsuko Imabayashi, Norihide Maikusa, Nobuyuki Okamura, Shozo Furumoto, Yukitsuka Kudo, Masayo Ogawa, Harumasa Takano, Yuma Yokoi, Masuhiro Sakata, Tadashi Tsukamoto, Koichi Kato, Hiroshi Matsuda
INTRODUCTION: Molecular imaging and selective hippocampal subfield atrophy are a focus of recent Alzheimer's disease (AD) research. Here, we investigated correlations between molecular imaging and hippocampal subfields in early AD. METHODS: We investigated 18 patients with early AD and 18 healthy control subjects using (11)C-Pittsburgh compound-B (PIB) positron emission tomography (PET) and (18)F-THK5351 PET and automatic segmentation of hippocampal subfields with high-resolution T2-weighted magnetic resonance imaging...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28795133/performance-of-18-f-flutemetamol-amyloid-imaging-against-the-neuritic-plaque-component-of-cerad-and-the-current-2012-nia-aa-recommendations-for-the-neuropathologic-diagnosis-of-alzheimer-s-disease
#2
Stephen Salloway, Jose E Gamez, Upinder Singh, Carl H Sadowsky, Teresa Villena, Marwan N Sabbagh, Thomas G Beach, Ranjan Duara, Adam S Fleisher, Kirk A Frey, Zuzana Walker, Arvinder Hunjan, Yavir M Escovar, Marc E Agronin, Joel Ross, Andrea Bozoki, Mary Akinola, Jiong Shi, Rik Vandenberghe, Milos D Ikonomovic, Paul F Sherwin, Gill Farrar, Adrian P L Smith, Christopher J Buckley, Dietmar Rudolf Thal, Michelle Zanette, Craig Curtis
INTRODUCTION: Performance of the amyloid tracer [(18)F]flutemetamol was evaluated against three pathology standard of truth (SoT) measures including neuritic plaques (CERAD "original" and "modified" and the amyloid component of the 2012 NIA-AA guidelines). METHODS: After [(18)F]flutemetamol imaging, 106 end-of-life patients who died underwent postmortem brain examination for amyloid plaque load. Blinded positron emission tomography scan interpretations by five independent electronically trained readers were compared with pathology measures...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28761928/familiarity-deficits-in-cognitively-normal-aging-individuals-with-apoe-%C3%AE%C2%B54-a-follow-up-investigation-of-medial-temporal-lobe-structural-correlates
#3
Dorothee Schoemaker, Judes Poirier, D Louis Collins, Serge Gauthier, Jens C Pruessner
INTRODUCTION: The apolipoprotein E ε4 (APOE ε4) allele is a well-documented risk factor for Alzheimer's disease (AD). Accordingly, aging individuals carrying one or more ε4 alleles are at considerably greater risk of developing AD over time. In an effort to characterize early cognitive manifestations of AD, we previously outlined selective deficits in familiarity-based recognition in otherwise asymptomatic carriers of the APOE ε4 allele (Schoemaker et al., 2016). In this follow-up report, we aimed to explore the neural correlates of this selective cognitive impairment...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28761927/body-mass-index-in-midlife-and-dementia-systematic-review-and-meta-regression-analysis-of-589-649-men-and-women-followed-in-longitudinal-studies
#4
REVIEW
Emiliano Albanese, Lenore J Launer, Matthias Egger, Martin J Prince, Panteleimon Giannakopoulos, Frank J Wolters, Kieren Egan
INTRODUCTION: We conducted a meta-analysis of the conflicting epidemiologic evidence on the association between midlife body mass index (BMI) and dementia. METHODS: We searched standard databases to identify prospective, population-based studies of dementia risk by midlife underweight, overweight, and obesity. We performed random-effects meta-analyses and meta-regressions of adjusted relative risk (RR) estimates and formally explored between-study heterogeneity...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28761926/amyloid-%C3%AE-associated-cognitive-decline-in-the-absence-of-clinical-disease-progression-and-systemic-illness
#5
Karra D Harrington, Yen Ying Lim, David Ames, Jason Hassenstab, Simon M Laws, Ralph N Martins, Stephanie Rainey-Smith, Joanne Robertson, Christopher C Rowe, Olivier Salvado, Vincent Doré, Victor L Villemagne, Peter J Snyder, Colin L Masters, Paul Maruff
INTRODUCTION: High levels of amyloid β (Aβ) are associated with cognitive decline in cognitively normal (CN) older adults. This study investigated the nature of cognitive decline in healthy individuals who did not progress to mild cognitive impairment or dementia. METHOD: Cognition was measured over 72 months and compared between low (Aβ-) and high (Aβ+) CN older adults (n = 335) who did not progress to mild cognitive impairment or dementia and who remained free of severe or uncontrolled systemic illness...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28653036/assessment-of-amyloid-%C3%AE-in-pathologically-confirmed-frontotemporal-dementia-syndromes
#6
Rachel H Tan, Jillian J Kril, Yue Yang, Nicole Tom, John R Hodges, Victor L Villemagne, Christopher C Rowe, Cristian E Leyton, John B J Kwok, Lars M Ittner, Glenda M Halliday
INTRODUCTION: The diagnostic utility of in vivo amyloid β (Aβ) imaging to aid in the clinical distinction between frontotemporal dementia (FTD) and Alzheimer's disease remains unclear without data on the prevalence and severity of Aβ in pathologically confirmed FTD syndromes. METHODS: Aβ was assessed in 98 autopsy-confirmed FTD and 36 control cases, and the pathological accuracy of (11)C-Pittsburgh compound B (PiB)-positron emission tomography imaging was assessed in a subset of FTD cases (n = 15)...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28653035/a-classification-algorithm-for-predicting-progression-from-normal-cognition-to-mild-cognitive-impairment-across-five-cohorts-the-preclinical-ad-consortium
#7
Alden L Gross, Jason J Hassenstab, Sterling C Johnson, Lindsay R Clark, Susan M Resnick, Melissa Kitner-Triolo, Colin L Masters, Paul Maruff, John C Morris, Anja Soldan, Corinne Pettigrew, Marilyn S Albert
INTRODUCTION: We established a method for diagnostic harmonization across multiple studies of preclinical Alzheimer's disease and validated the method by examining its relationship with clinical status and cognition. METHODS: Cognitive and clinical data were used from five studies (N = 1746). Consensus diagnoses established in each study used criteria to identify progressors from normal cognition to mild cognitive impairment. Correspondence was evaluated between these consensus diagnoses and three algorithmic classifications based on (1) objective cognitive impairment in 2+ tests only; (2) a Clinical Dementia Rating (CDR) of ≥0...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28653034/nutrients-required-for-phospholipid-synthesis-are-lower-in-blood-and-cerebrospinal-fluid-in-mild-cognitive-impairment-and-alzheimer-s-disease-dementia
#8
Nick van Wijk, Rosalinde E R Slot, Flora H Duits, Marieke Strik, Egbert Biesheuvel, John W C Sijben, Marinus A Blankenstein, Jörgen Bierau, Wiesje M van der Flier, Philip Scheltens, Charlotte E Teunissen
INTRODUCTION: Synaptic membrane formation depends on nutrients that fuel metabolic pathways for the synthesis of constituent phospholipids. Consequently, insufficient availability of such nutrients may restrict membrane formation and contribute to synaptic dysfunction in Alzheimer's disease (AD). We assessed whether blood and cerebrospinal fluid (CSF) concentrations of nutrients related to phospholipid synthesis differ among patients with AD, mild cognitive impairment (MCI), and control subjects...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28653033/neuroticism-depression-and-anxiety-traits-exacerbate-the-state-of-cognitive-impairment-and-hippocampal-vulnerability-to-alzheimer-s-disease
#9
Valérie Zufferey, Alessia Donati, Julius Popp, Reto Meuli, Jérôme Rossier, Richard Frackowiak, Bogdan Draganski, Armin von Gunten, Ferath Kherif
INTRODUCTION: Certain personality traits are associated with higher risk of Alzheimer's disease, similar to cognitive impairment. The identification of biological markers associated with personality in mild cognitive impairment could advance the early detection of Alzheimer's disease. METHODS: We used hierarchical multivariate linear models to quantify the interaction between personality traits, state of cognitive impairment, and MRI biomarkers (gray matter brain volume, gray matter mean water diffusion) in the medial temporal lobe (MTL)...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28649597/early-diagnosis-of-mild-cognitive-impairment-and-alzheimer-s-disease-based-on-salivary-lactoferrin
#10
Eva Carro, Fernando Bartolomé, Félix Bermejo-Pareja, Alberto Villarejo-Galende, José Antonio Molina, Pablo Ortiz, Miguel Calero, Alberto Rabano, José Luis Cantero, Gorka Orive
INTRODUCTION: The Alzheimer's disease (AD) process is likely initiated many years before clinical onset. Biomarkers of preclinical disease are critical for the development of disease-modifying or even preventative therapies. Current biomarkers for early disease, including cerebrospinal fluid tau and amyloid β (Aβ) levels, structural and functional magnetic resonance imaging, and the use of brain amyloid imaging, are limited because they are very invasive or expensive. Noninvasive biomarkers may be a more accessible alternative, but none can currently detect preclinical AD with the required sensitivity and specificity...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28649596/phenoconversion-from-probable-rapid-eye-movement-sleep-behavior-disorder-to-mild-cognitive-impairment-to-dementia-in-a-population-based-sample
#11
Youngsin Jung, Brendon P Boot, Michelle M Mielke, Tanis J Ferman, Yonas E Geda, Eric McDade, Teresa J H Christianson, David S Knopman, Erik K St Louis, Michael H Silber, Ronald C Petersen, Bradley F Boeve
INTRODUCTION: Rapid eye movement sleep behavior disorder (RBD) is strongly associated with synucleinopathies. In 2012, we reported an increased risk of mild cognitive impairment (MCI) and Parkinson disease (PD) in cognitively normal Olmsted County, Minnesota, residents, aged 70 to 89 years with probable RBD. Here, we examine their progression to dementia and other neurodegenerative phenotypes. METHODS: Fifteen participants with RBD who were diagnosed with either MCI or PD were longitudinally followed, and their subsequent clinical courses were reviewed...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28603769/longitudinal-changes-in-amyloid-positron-emission-tomography-and-volumetric-magnetic-resonance-imaging-in-the-nondemented-down-syndrome-population
#12
Patrick J Lao, Ben L Handen, Tobey J Betthauser, Iulia Mihaila, Sigan L Hartley, Annie D Cohen, Dana L Tudorascu, Peter D Bulova, Brian J Lopresti, Rameshwari V Tumuluru, Dhanabalan Murali, Chester A Mathis, Todd E Barnhart, Charles K Stone, Julie C Price, Darlynne A Devenny, Marsha R Mailick, William E Klunk, Sterling C Johnson, Bradley T Christian
INTRODUCTION: Down syndrome (DS) arises from a triplication of chromosome 21, causing overproduction of the amyloid precursor protein and predisposes individuals to early Alzheimer's disease (AD). METHODS: Fifty-two nondemented adults with DS underwent two cycles of carbon 11-labeled Pittsburgh compound B ([(11)C]PiB) and T1 weighted magnetic resonance imaging (MRI) scans 3.0 ± 0.6 years apart. Standard uptake value ratio (SUVR) images (50-70 minutes; cerebellar gray matter [GM]) and GM volumes were analyzed in standardized space (Montreal Neurological Institute space)...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28603768/consensus-guidelines-for-lumbar-puncture-in-patients-with-neurological-diseases
#13
Sebastiaan Engelborghs, Ellis Niemantsverdriet, Hanne Struyfs, Kaj Blennow, Raf Brouns, Manuel Comabella, Irena Dujmovic, Wiesje van der Flier, Lutz Frölich, Daniela Galimberti, Sharmilee Gnanapavan, Bernhard Hemmer, Erik Hoff, Jakub Hort, Ellen Iacobaeus, Martin Ingelsson, Frank Jan de Jong, Michael Jonsson, Michael Khalil, Jens Kuhle, Alberto Lleó, Alexandre de Mendonça, José Luis Molinuevo, Guy Nagels, Claire Paquet, Lucilla Parnetti, Gerwin Roks, Pedro Rosa-Neto, Philip Scheltens, Constance Skårsgard, Erik Stomrud, Hayrettin Tumani, Pieter Jelle Visser, Anders Wallin, Bengt Winblad, Henrik Zetterberg, Flora Duits, Charlotte E Teunissen
INTRODUCTION: Cerebrospinal fluid collection by lumbar puncture (LP) is performed in the diagnostic workup of several neurological brain diseases. Reluctance to perform the procedure is among others due to a lack of standards and guidelines to minimize the risk of complications, such as post-LP headache or back pain. METHODS: We provide consensus guidelines for the LP procedure to minimize the risk of complications. The recommendations are based on (1) data from a large multicenter LP feasibility study (evidence level II-2), (2) systematic literature review on LP needle characteristics and post-LP complications (evidence level II-2), (3) discussion of best practice within the Joint Programme Neurodegenerative Disease Research Biomarkers for Alzheimer's disease and Parkinson's Disease and Biomarkers for Multiple Sclerosis consortia (evidence level III)...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28603767/lumbar-puncture-in-patients-with-neurologic-conditions
#14
Rosha Babapour Mofrad, Femke H Bouwman, Rosalinde E R Slot, Tessa Timmers, Wiesje M van der Flier, Philip Scheltens, Charlotte E Teunissen
A lumbar puncture is performed to obtain cerebral spinal fluid. It is implemented in the clinic on a routine basis to aid the diagnosis of neurologic diseases, such as dementia. This video will show the lumbar puncture procedure as routinely performed in the VUmc Alzheimer Center.
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28560310/longitudinal-evaluation-of-criteria-for-subjective-cognitive-decline-and-preclinical-alzheimer-s-disease-in-a-memory-clinic-sample
#15
Marie Eckerström, Mattias Göthlin, Sindre Rolstad, Erik Hessen, Carl Eckerström, Arto Nordlund, Boo Johansson, Johan Svensson, Michael Jonsson, Simona Sacuiu, Anders Wallin
INTRODUCTION: Subjective cognitive decline (SCD) and biomarker-based "at-risk" concepts such as "preclinical" Alzheimer's disease (AD) have been developed to predict AD dementia before objective cognitive impairment is detectable. We longitudinally evaluated cognitive outcome when using these classifications. METHODS: Memory clinic patients (n = 235) were classified as SCD (n = 122): subtle cognitive decline (n = 36) and mild cognitive impairment (n = 77) and subsequently subclassified into SCDplus and National Institute on Aging-Alzheimer's Association (NIA-AA) stages 0 to 3...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28560309/single-nucleotide-polymorphisms-are-associated-with-cognitive-decline-at-alzheimer-s-disease-conversion-within-mild-cognitive-impairment-patients
#16
Eunjee Lee, Kelly S Giovanello, Andrew J Saykin, Fengchang Xie, Dehan Kong, Yue Wang, Liuqing Yang, Joseph G Ibrahim, P Murali Doraiswamy, Hongtu Zhu
INTRODUCTION: The growing public threat of Alzheimer's disease (AD) has raised the urgency to quantify the degree of cognitive decline during the conversion process of mild cognitive impairment (MCI) to AD and its underlying genetic pathway. The aim of this article was to test genetic common variants associated with accelerated cognitive decline after the conversion of MCI to AD. METHODS: In 583 subjects with MCI enrolled in the Alzheimer's Disease Neuroimaging Initiative (ADNI; ADNI-1, ADNI-Go, and ADNI-2), 245 MCI participants converted to AD at follow-up...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28560308/resting-state-network-dysfunction-in-alzheimer-s-disease-a-systematic-review-and-meta-analysis
#17
AmanPreet Badhwar, Angela Tam, Christian Dansereau, Pierre Orban, Felix Hoffstaedter, Pierre Bellec
INTRODUCTION: We performed a systematic review and meta-analysis of the Alzheimer's disease (AD) literature to examine consistency of functional connectivity alterations in AD dementia and mild cognitive impairment, using resting-state functional magnetic resonance imaging. METHODS: Studies were screened using a standardized procedure. Multiresolution statistics were performed to assess the spatial consistency of findings across studies. RESULTS: Thirty-four studies were included (1363 participants, average 40 per study)...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28508031/altered-levels-of-blood-proteins-in-alzheimer-s-disease-longitudinal-study-results-from-australian-imaging-biomarkers-lifestyle-study-of-ageing-cohort
#18
Veer Bala Gupta, Eugene Hone, Steve Pedrini, James Doecke, Sid O'Bryant, Ian James, Ashley I Bush, Christopher C Rowe, Victor L Villemagne, David Ames, Colin L Masters, Ralph N Martins
INTRODUCTION: A blood-based biomarker panel to identify individuals with preclinical Alzheimer's disease (AD) would be an inexpensive and accessible first step for routine testing. METHODS: We analyzed 14 biomarkers that have previously been linked to AD in the Australian Imaging Biomarkers lifestyle longitudinal study of aging cohort. RESULTS: Levels of apolipoprotein J (apoJ) were higher in AD individuals compared with healthy controls at baseline and 18 months (P = ...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28492059/severity-of-memory-impairment-in-the-elderly-association-with-health-care-resource-use-and-functional-limitations-in-the-united-states
#19
Myrlene Sanon Aigbogun, Robert Stellhorn, Holly Krasa, Dusan Kostic
INTRODUCTION: Dementia is a prevalent condition in older adults associated with decline in cognitive and functional abilities and substantial burden. This study assessed the prevalence and impact of subjective memory impairment in the United States. METHODS: The 2011 to 2014 National Health and Nutrition Examination Survey, a population-based, nationally representative survey, was analyzed. Data included medical examinations, self-reported cognitive and functional limitations, and health care utilization over 1 year...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28462389/effect-of-long-term-storage-in-biobanks-on-cerebrospinal-fluid-biomarker-a%C3%AE-1-42-t-tau-and-p-tau-values
#20
Eline A J Willemse, Kees W J van Uffelen, Wiesje M van der Flier, Charlotte E Teunissen
INTRODUCTION: We studied the effect of long-term storage at -80°C on cerebrospinal fluid (CSF) biomarker levels. Our approach assumed consistency of mean biomarker levels in a homogenous Alzheimer's disease patient cohort over time. METHODS: We selected 148 Alzheimer's disease samples that had inclusion dates equally distributed over the years 2001 to 2013 from our biobank. The concentrations of CSF biomarkers, amyloid β1-42 (Aβ1-42), total tau (T-tau), and phosphorylated tau181 (P-tau), were measured with one enzyme-linked immunosorbent assay lot...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
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