Signaling of the neurotrophin receptor p75 in relation to Alzheimer’s disease |
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Authors: | Adama Diarra Pamella Potter |
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Institution: | a Department of Biochemistry, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA b Center for Metabolic Biology, Arizona State University, Tempe, AZ, USA c Department of Pharmacology, Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ, USA |
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Abstract: | The cellular mechanism of neuronal apoptosis in Alzheimer’s disease (AD) is poorly understood. Many hypotheses have been put fourth to explain the underlying reason for neuro-degeneration in AD. Here, it is demonstrated that all neurotrophins that activated p75, without co-activation of the relevant Trk co-receptor, mediated apoptosis in hippocampal neurons. Thus, proneurotrophins and amyloid β peptides (Aβ) can induce p75-mediated apoptosis in hippocampal neurons since they do not bind or activate Trk receptors. Based on the combined effects of aging, proneurotrophins, neurotrophins, and Aβ, a novel model of pathogenesis in AD is proposed. This mini-review explores the ligand and cell type based signaling pathways of the neurotrophin receptor p75 relating to Alzheimer’s disease. |
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Keywords: | Alzheimer&rsquo s disease p75 Trk Signaling Neurotrophins |
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