Tanina Arab

Abstract Alzheimer’s disease is triggered by amyloid-β, with symptoms linked to synapse loss. Oligomeric amyloid-β, rather than monomeric or fibrillar amyloid-β, has been proposed to be the proximate mechanistic cause, but the relevant molecular characteristics have remained unclear. To define the biologically relevant species, we isolated a receptor-bound amyloid-β pool from Alzheimer’s disease brain by release with a receptor antagonist and purification to homogeneity.

New Results doi: https://doi.org/10.1101/2023.05.06.539665 Abstract Extracellular vesicles (EVs) are released from different cell types in the central nervous system (CNS) and play roles in regulating physiological and pathological functions. Although brain-derived EVs (bdEVs) have been successfully collected from brain tissue, there is not yet a bdEV atlas of EVs from different brain regions.

Abstract Neuronal activity is closely influenced by glia, especially microglia which are the resident immune cells in the central nervous system (CNS). Microglia in medicinal leech are the only cells able to migrate to the injury site within the 24 hours post-lesion. The microglia-neuron interactions constitute an important mechanism as there is neither astrocyte nor oligodendrocyte in the leech CNS.