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Molecular and genetic landscapes of retina and brain microglia in neurodegenerative diseases

2 months 3 weeks ago
Microglia-driven dysregulation has emerged as a significant underlying mechanism in many neurodegenerative diseases, such as age-related macular degeneration (AMD) and Alzheimer's disease (AD). Although both brain and retinal microglia originate from the yolk sac, it is uncertain whether they share molecular similarities or genetic and molecular foundations related to neurodegenerative diseases. In this study, we examine the transcriptomic and epigenetic profiles of retina and brain microglia...
Khang Ma

RABGAP1 is a sensor that facilitates the sorting and processing of amyloid precursor protein

2 months 3 weeks ago
A hallmark of Alzheimer's disease (AD) is the accumulation of extracellular amyloid-β plaques in the brain. Amyloid-β is a 40-42 amino acid peptide generated by proteolytic processing of amyloid precursor protein (APP) via membrane-bound proteases. APP is a transmembrane protein, and its trafficking to sites of proteolysis represents a rate-limiting step in AD progression. Although APP processing has been well-studied, its trafficking itinerary and machinery remain incompletely understood. To...
Jessica Eden

Distinct manifestations of excitatory-inhibitory imbalance associated with amyloid-beta and tau in patients with Alzheimer's disease

2 months 3 weeks ago
A growing body of evidence shows that epileptic activity is frequently observed in patients with Alzheimer's disease (AD), implicating underlying excitatory-inhibitory imbalance. The distinction of whether the AD-epileptic phenotype represents a subset of patients or an underdiagnosed manifestation holds major therapeutic implications. Here, we quantified the excitatory-inhibitory imbalance in AD patients using magnetoencephalography and examined the relationships to AD...
Kamalini G Ranasinghe