The longitudinal evaluation of familial frontotemporal dementia subjects protocol: Framework and methodology

We present the theoretical considerations of f-FTLD and the aims/objectives of this protocol. We also describe the design and methodology for evaluating and rating subjects, in which detailed clinical and neuropsychological assessments are performed, biofluid samples are collected, and magnetic resonance imaging scans are performed using a standard protocol.DiscussionThese data and samples, which are available to interested investigators worldwide, will facilitate planning for upcoming disease-modifying therapeutic trials in f-FTLD.
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research

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We examined the neurobiological characteristics and clinical progression of these atrophy-defined subtypes. METHODS: The four subtypes were replicated using a clustering method on MRI data in 260 amyloid-β-positive patients with mild cognitive impairment or AD dementia, and we subsequently tested whether the subtypes differed on [18F]flortaucipir (tau) positron emission tomography, white matter hyperintensity burden, and rate of global cognitive decline. RESULTS: Voxel-wise and region-of-interest analyses revealed the greatest neocortical tau load in hippocampal-sparing (frontoparietal-predominant) and typical...
Source: The Journal of Alzheimers Association - Category: Psychiatry Tags: Alzheimers Dement Source Type: research
We examined the neurobiological characteristics and clinical progression of these atrophy-defined subtypes.MethodsThe four subtypes were replicated using a clustering method on MRI data in 260 amyloid-β–positive patients with mild cognitive impairment or AD dementia, and we subsequently tested whether the subtypes differed on [18F]flortaucipir (tau) positron emission tomography, white matter hyperintensity burden, and rate of global cognitive decline.ResultsVoxel-wise and region-of-interest analyses revealed the greatest neocortical tau load in hippocampal-sparing (frontoparietal-predominant) and typical (tempor...
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research
This study retrospectively reviewed 26 cases of sCJD diagnosed in a single center in recent years. All 26 sCJD patients received brain magnetic resonance imaging scan, cerebrospinal fluid 14-3-3 protein detection, electroencephalogram, and PRNP gene screening. The codon 129 polymorphism were all homozygous MM in 26 sCJD patients. The main onset symptoms of sCJD patients were rapidly progressive dementia, visual impairment, and cerebellar ataxia. At the time of diagnosis, the incidence of myoclonus and akinetic mutism were relatively low (
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
We present the theoretical considerations of f-FTLD and the aims/objectives of this protocol. We also describe the design and methodology for evaluating and rating subjects, in which detailed clinical and neuropsychological assessments are performed, biofluid samples are collected, and magnetic resonance imaging scans are performed using a standard protocol. DISCUSSION: These data and samples, which are available to interested investigators worldwide, will facilitate planning for upcoming disease-modifying therapeutic trials in f-FTLD. PMID: 31636026 [PubMed - as supplied by publisher]
Source: The Journal of Alzheimers Association - Category: Psychiatry Tags: Alzheimers Dement Source Type: research
DiscussionThe harmonized database is an optimum resource to design AD prevention trials decades before symptomatic onset.
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research
DiscussionCorrelation patterns between tau burden and atrophy in the amyloid-β–negative group mimicking early Braak stages suggests that 18F-flortaucipir is sensitive to tau pathology in primary age-related tauopathy. Correlations of imaging measures with memory performance indicate that this pathology is associated with poorer cognition.
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research
AbstractAlzheimer ’s disease (AD) is the most common neurodegenerative disease in elderly individuals. We conducted this study to examine whether alterations in the fractional amplitudes of low-frequency fluctuations (fALFF) in the AD spectrum were frequency-dependent and symptom-relevant. A total of 43 patients wi th subjective cognitive decline (SCD), 52 with amnestic mild cognitive impairment (aMCI), 44 with Alzheimer’s dementia (d-AD) and 55 well-matched controls participated in resting-state functional magnetic resonance imaging (rs-fMRI) scans. The amplitudes were measured using fALFF within the slow-4 (0...
Source: Brain Imaging and Behavior - Category: Neurology Source Type: research
Publication date: Available online 22 July 2019Source: NeuroImage: ClinicalAuthor(s): Leonie Beyer, Jonas Schnabel, Philipp Kazmierczak, Michael Ewers, Sonja Schönecker, Catharina Prix, Johanna Meyer-Wilmes, Marcus Unterrainer, Cihan Catak, Oliver Pogarell, Robert Perneczky, Nathalie L. Albert, Peter Bartenstein, Adrian Danek, Katharina Bürger, Johannes Levin, Axel Rominger, Matthias BrendelAbstractObjectivesMany predictive or influencing factors have emerged in investigations of the cognitive reserve model of patients with Alzheimer's disease (AD). For example, neuronal injury, which correlates with cognitive de...
Source: NeuroImage: Clinical - Category: Radiology Source Type: research
AbstractAs the worldwide population ages, the prevalence of Alzheimer's disease (AD) increases. However, the results of promising medications have been unsatisfactory. Chinese acupuncture has a long history of treating dementia, but lack of evidence from well-designed randomized controlled trials that validate its efficacy and safety, as well as its lack of clear underlying mechanisms, contribute to its limited application in clinical practice. In recent years, brain imaging technologies, such as functional magnetic resonance imaging and positron emission tomography, have been used to assess brain responses to acupuncture ...
Source: Chinese Journal of Integrative Medicine - Category: Internal Medicine Source Type: research
ConclusionsA reduction of the [18F]FDG dose down to 1  MBq/kg is possible when performing 20-min brain PET/MRI without modifying diagnostic performance and quantitative assessments. The advantage is a significant reduction in the patient effective dose, which is non-negligible in longitudinal follow-up studies and in research protocols involving healt hy volunteers.
Source: Molecular Imaging and Biology - Category: Molecular Biology Source Type: research
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