NeuralCipher Research overview
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Microglia-mediated neuroinflammation induced by α-synuclein in the substantianigra likely either initiates or aggravates nigral neuro degeneration in Parkinson's disease (PD). We aimed to explore the effects of α-mangostin (α-M), a polyphenolicxanthone derivative from mangosteen on α-synuclein-stimulated DA neurodegeneration. Primary microglia, mesencephalic neuron, mesencephalic neuron-glianeuronal cultures, and transwell co-cultures were prepared separately. Liquid scintillation counting was used to determine the radioactivity in DA uptake. Enzyme-linked immunosorbent assay (ELISA) was performed in the IL-1β, IL-6, and TNF-α assay. The expression of proteins was analyzed by Western blot. α-M inhibited the increased levels of pro-inflammatory cytokines, NO, and ROS in α-synuclein-stimulated primary microglia. Mechanistic study revealed that α-M functioned by inhibition of nuclear factor kappa B (NF-κB) and NADPH oxidase. Further, α-M protected α-synuclein-induced microglial and direct neurotoxicity. Although detailed mechanisms remain to be defined, our observations suggest a potential compound, which inhibits microglial activation induced by α-synuclein by targeting NADPH oxidase, might be a therapeutic possibility in preventing PD progression.
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