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Aging is accompanied by a high level of oxidized form of guanine, 8-oxo-2’deoxyguanosine (8-oxo-2’dG), and decreased level of 8-oxoguanine glycosylase 1 (OGG1) in the brain. The development and progression of neurodegenerative disorders are also characterized by dysfunction or loss of the brain nicotinic acetylcholine receptors (nAChRs). To study whether the differences in nAChRs expression in the...
The amyloid precursor protein (APP) plays a central role in Alzheimer's disease (AD) pathogenesis through its cleavage leading to the accumulation of the peptide βA4. Diffusible oligomeric assemblies of amyloid beta peptide are thought to induce synaptic dysfunction, an early change in AD. We tested the hypothesis that a reduction in presynaptic APP could itself lead to a decrease in synaptic efficacy...
Studies have shown that estrogen plays important roles in regulating neural structure and function in the brain, but the mechanism remains unclear. The actions of estrogen were thought to be mediated by a single estrogen receptor until the identification of another estrogen receptor, namely estrogen receptor-β (ER-β). Here we report a comprehensive study of the localization of ER-β immunoreactivity...
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