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- W2051284802 abstract "Inflammation plays a central role in the pathogenesis of several brain disorders and neuronal injury, and it develops as a consequence of glial cell activation. Activated microglial cells generate potentially damaging nitric oxide, oxygen free radicals, prostanoids, and pro-inflammatory cytokines. Naturally occurring polyphenols have recently received attention for their potential protective effect on neurodegenerative disorders characterized by microglial activation, due to their anti-inflammatory and antioxidant properties. In the present study, we investigated, using an in vitro model of primary microglia, the ability of 1-phenyl-6,7-dihydroxy-isochroman (encoded L 137), a natural polyphenolic compound, to inhibit microglia activation induced by an inflammatory insult. So, L137 effects (1–100 μM) on production of pro-inflammatory mediators in lipopolysaccharide (LPS)-activated microglial cells were evaluated. The expression of inducible isoforms of nitric oxide synthase (iNOS) and cyclooxygenase (COX-2) as well as of the nuclear transcription Factor-kappa B (NF-κB) was also performed in cellular lysates by Immunoblot. L137 significantly reduced tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6 secretion, as well as nitric oxide (NO) and prostanoids [Thromboxane (TX)B2, prostaglandin (PG)E2] production in activated microglial cells. Western blot analyses showed an inhibitory effect of L137 on the iNOS and COX-2 expression, mediated by a modulation of redox-sensitive nuclear transcriptional factor (NF)-κB, known to control a wide array of genes involved in inflammation. In conclusion, this study demonstrate that L137 is able to inhibit the production of pro-inflammatory and neurotoxic mediators by LPS-activated microglial cells thus suggesting L137 as a potential lead compound for drug development for neurodegenerative disorders where microglia-mediated inflammatory responses play an important pathogenic role." @default.
- W2051284802 created "2016-06-24" @default.
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- W2051284802 date "2013-06-01" @default.
- W2051284802 modified "2023-10-18" @default.
- W2051284802 title "1-Phenil-6,7-dihydroxy-isochroman inhibits inflammatory activation of microglia" @default.
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- W2051284802 doi "https://doi.org/10.1016/j.brainresbull.2013.03.001" @default.
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