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Basic Science and Pathogenesis.
Alzheimers Dement
December 2024
LCBC, University of Oslo, Oslo, Norway.
Background: Grid cells are spatially modulated cells in the entorhinal cortex (EC) that fire in a hexagonally patterned grid which tiles the environment. These cells are assumed important in human spatial navigation. The EC is vulnerable to neurodegenerative processes in both normal aging and Alzheimer's disease and decline in grid cell function may be a key factor in understanding age-related navigational decline.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Northwestern University, Chicago, IL, USA.
Background: Recent advances in Alzheimer's disease (AD) therapeutics involve immunization against amyloid-β (Aβ). Post-mortem brain analysis from the first active Aβ immunotherapy trial indicated clearance of Aβ in some AD patients. Yet, the mechanisms regulating Aβ clearance following immunization remain unknown.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Brigham and Women's Hospital; Harvard Medical School, Boston, MA, USA.
Background: Anti-amyloid antibodies have been associated with amyloid-related-imaging-abnormalities (ARIA) in AD patients, causing vasogenic edema and microhemorrhages, especially in ApoE4 carriers. Here, we compared recombinant 3D6-L, a murine version of bapineuzumab, and an isotype control IgG2a monoclonal antibody (mAb) to investigate potential mechanisms, including complement activation, involved in these side effects (ARIA-H or microhemorrhages) following passive immunization.
Method: Plaque-rich 16.
Basic Science and Pathogenesis.
Alzheimers Dement
December 2024
CNR Institute of Neuroscience, Vedano al Lambro, Italy.
Background: We recently demonstrated that large extracellular vesicles (EVs) released by Aβ-loaded microglia and carrying Aβ (Aβ-EVs) propagate synaptic dysfunction in the mouse brain by moving at the axon surface (Gabrielli et al., Brain, 2022; Falcicchia et al., Brain Commun, 2023).
View Article and Find Full Text PDFClinical Manifestations.
Alzheimers Dement
December 2024
University of São Paulo, São Paulo, Brazil.
Background: This study investigated the effects of cognitive stimulation on older adults over 18 months through a randomized clinical trial with 190 participants divided into Training Group (TG), Active Control Group (ACG), and Passive Control Group (PCG). Initial sociodemographic characterization (Table 1) ensured homogeneity among the groups. The clinical trial design aimed to assess the long-term impacts of multicompartment cognitive stimulation on the cognitive function of older adults in the TG.
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