PET, MRI link amyloid plaque with swift decline

Patients whose PET and MR images show beta-amyloid plaque accumulation in the...Read more on AuntMinnie.comRelated Reading: Study: FDG-PET reigns supreme for assessing Alzheimer's Who should get brain scans for Alzheimer's disease? PET model tracks beta amyloid, Alzheimer's risk PET shows how women are more susceptible to Alzheimer's MRI links brain region to dementia, auditory deterioration
Source: Headlines - Category: Radiology Source Type: news

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This study provides strong evidence that following a healthy lifestyle can substantially extend the years a person lives disease-free." Commentary on Recent Evidence for Cognitive Decline to Precede Amyloid Aggregation in Alzheimer's Disease I can't say that I think the data presented in the research noted here merits quite the degree of the attention that it has been given in the popular science press. It is interesting, but not compelling if its role...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
CONCLUSIONS: ¹⁸F-FC119S PET provides high sensitivity and specificity in detecting AD and therefore may be considered a useful diagnostic tool for AD. PMID: 31942769 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
In this study, we investigated the link between AF and senescence markers through the assessment of protein expression in the tissue lysates of human appendages from patients in AF, including paroxysmal (PAF) or permanent AF (PmAF), and in sinus rhythm (SR). The major findings of the study indicated that the progression of AF is strongly related to the human atrial senescence burden as determined by p53 and p16 expression. The stepwise increase of senescence (p53, p16), prothrombotic (TF), and proremodeling (MMP-9) markers observed in the right atrial appendages of patients in SR, PAF, and PmAF points toward multiple inter...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Alzheimer's disease is a condition characterized by amyloid aggregation, chronic inflammation in brain tissue, and tau aggregation, these aspects of the condition progressing at different paces and interacting with one another in complex ways that are yet to be fully understood. Amyloid aggregation is widely thought to be the initial, triggering pathology. Tau aggregation is found in the later stages of Alzheimer's disease, once cell death begins in earnest, and the evidence suggests that this form of pathology is driven by chronic inflammation in the brain. Removal of senescent supporting cells in the brain, thereby reduc...
Source: Fight Aging! - Category: Research Authors: Tags: Medicine, Biotech, Research Source Type: blogs
Authors: Phillips ML, Stage EC, Lane KA, Gao S, Risacher SL, Goukasian N, Saykin AJ, Carrillo MC, Dickerson BC, Rabinovici GD, Apostolova LG, Alzheimer’s Disease Neuroimaging Initiative Abstract BACKGROUND/AIMS: Alzheimer's disease (AD) with onset before 65 (early-onset AD [EOAD]) occurs in approximately 6% of cases and can affect nonmemory domains. Here, we analyze patterns of impairment in amnestic EOAD individuals using data-driven statistical analyses. METHODS: Cognitive data of 146 EOAD subjects were Z-normalized to 395 cognitively normal (CN) individuals. Domain-averaged Z-scores were...
Source: Dementia and Geriatric Cognitive Disorders - Category: Psychiatry Tags: Dement Geriatr Cogn Disord Source Type: research
PET scans comparing the location and magnitude of tau protein accumulation...Read more on AuntMinnie.comRelated Reading: Flortaucipir-PET shows tau accumulation after one TBI Flortaucipir-PET shows promise for detecting CTE PET's view of tau could explain women's early dementia Flortaucipir-PET targets tau for Alzheimer's diagnoses PET with novel tracers foretells early Alzheimer's risk
Source: Headlines - Category: Radiology Source Type: news
β-Amyloid plaques and tau-containing neurofibrillary tangles are the two neuropathological hallmarks of Alzheimer’s disease (AD) and are thought to play crucial roles in a neurodegenerative cascade leading to dementia. Both lesions can now be visualized in vivo using positron emission tomography (PET) radiotracers, opening new opportunities to study disease mechanisms and improve patients’ diagnostic and prognostic evaluation. In a group of 32 patients at early symptomatic AD stages, we tested whether β-amyloid and tau-PET could predict subsequent brain atrophy measured using longitudinal magnetic res...
Source: Science Translational Medicine - Category: Biomedical Science Authors: Tags: Research Articles Source Type: research
Valid diagnosis of dementia with Lewy bodies (DLB) is essential to establish appropriate treatment and care. However, the diagnostic accuracy is complicated by clinical and pathological overlap with Alzheimer's disease (AD). Cingulate island sign (CIS), defined as sparing of posterior cingulate cortex (PCC) relative to precuneus and cuneus on 18F-fluoro-deoxy-glucose positron emission tomography (18F-FDG-PET), is included in the revised diagnostic DLB criteria. There are no guidelines for the visual grading of CIS, although visual rating is a fast-applicable method in a clinical setting.
Source: Journal of the Neurological Sciences - Category: Neurology Authors: Source Type: research
DiscussionGd does not accumulate in brains of older individuals with a BBB breakdown in the hippocampus. Thus, Gd agents can be used without risk of brain retention within a ∼2-year follow-up to study BBB in the aging human brain in relation to cognition and/or other pathologies.
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research
BACKGROUND AND PURPOSE: Cell loss within the nucleus basalis of Meynert is an early event in Alzheimer disease. The thickness of the nucleus basalis of Meynert (NBM) can be measured on structural MR imaging. We investigated NBM thickness in relation to cognitive state and biochemical markers. MATERIALS AND METHODS: Mean bilateral nucleus basalis of Meynert thickness was measured on coronal T1-weighted MR imaging scans from the Alzheimer’s Disease Neuroimaging Initiative dataset. Three hundred and fifteen scans (80 controls, 79 cases of early mild cognitive impairment, 77 cases of late mild cognitive impairment and 7...
Source: American Journal of Neuroradiology - Category: Radiology Authors: Tags: ADULT BRAIN Source Type: research
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