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Search: authors:"Tiernan, Chelsea T"

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Tau Oligomer Pathology in Nucleus Basalis Neurons During the Progression of Alzheimer Disease

Although tau is the primary constituent of neurofibrillary tangles (NFTs), evidence suggests that its toxic moiety is oligomeric in Alzheimer disease (AD). In this regard, tau oligomers correlate more strongly with neuronal loss than NFTs and exhibit neurotoxicity in preclinical AD models. Here, we investigated the spatiotemporal progression of oligomeric tau accumulation within...

Methylmercury Impairs Canonical Dopamine Metabolism in Rat Undifferentiated Pheochromocytoma (PC12) Cells by Indirect Inhibition of Aldehyde Dehydrogenase

The environmental neurotoxicant methylmercury (MeHg) disrupts dopamine (DA) neurochemical homeostasis by stimulating DA synthesis and release. Evidence also suggests that DA metabolism is independently impaired. The present investigation was designed to characterize the DA metabolomic profile induced by MeHg, and examine potential mechanisms by which MeHg inhibits the DA...