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Resveratrol protects cortical neurons against microglia-mediated neuroinflammation
1Department of Pharmacology and Key Lab of Basic Pharmacology of Guizhou, Zunyi Medical College, Zunyi, 563099, PR China. zhangfengzmc@163.com
Abstract:
Neuroinflammation is closely associated with the pathogenesis of neurological disorders. The hallmark of neuroinflammation is considered to be microglial activation. Therefore, inhibition of microglial activation might hold a promising therapy for neurological disorders. Resveratrol, a natural non-flavonoid polyphenol found in grapes and red wine, has been recognized as a bioactive agent with potential benefit for health. Several lines of evidence show that resveratrol could exert neuroprotection against ischemia, seizure, and neurodegenerative diseases. However, the mechanisms underlying its beneficial neuroprotective effects are poorly defined. Here, by using rat primary cortical neuron-glia cultures, results showed that resveratrol attenuated lipopolysaccharide (LPS)-induced cortical neurotoxicity. Further studies revealed that microglia were responsible for resveratrol-mediated neuroprotection. Resveratrol significantly inhibited LPS-induced microglial activation and subsequent production of multiple pro-inflammatory and cytotoxic factors such as tumor necrosis factor-α, nitric oxide, and interleukin-1β. Collectively, resveratrol produced neuroprotection against microglia-induced neurotoxicity. Thus, resveratrol might represent a potential benefit for the treatment of inflammation-related neurological disorders.
Insights
Resveratrol, a compound found in red wine, protects the brain by inhibiting microglial activation, a key factor in neuroinflammation and neurological disorders.
Area of Science:
- Neuroscience
- Pharmacology
- Cell Biology
Background:
- Neuroinflammation, characterized by microglial activation, is implicated in neurological disorder pathogenesis.
- Inhibiting microglial activation presents a potential therapeutic strategy for neurological conditions.
- Resveratrol, a polyphenol from grapes, exhibits neuroprotective properties, but its mechanisms remain unclear.
Purpose of the Study:
- To investigate the neuroprotective mechanisms of resveratrol against lipopolysaccharide (LPS)-induced neurotoxicity.
- To determine the role of microglia in resveratrol-mediated neuroprotection.
- To elucidate how resveratrol affects microglial activation and the production of inflammatory factors.
Main Methods:
- Utilized rat primary cortical neuron-glia cultures.
- Induced neurotoxicity using lipopolysaccharide (LPS).
- Assessed the effects of resveratrol on microglial activation and inflammatory mediator release.
Main Results:
- Resveratrol attenuated LPS-induced cortical neurotoxicity.
- Microglia were identified as the mediators of resveratrol's neuroprotective effects.
- Resveratrol significantly inhibited LPS-induced microglial activation and the release of tumor necrosis factor-α, nitric oxide, and interleukin-1β.
Conclusions:
- Resveratrol confers neuroprotection against microglia-induced neurotoxicity.
- Resveratrol's mechanism involves the inhibition of microglial activation and pro-inflammatory cytokine production.
- Resveratrol shows potential as a therapeutic agent for inflammation-related neurological disorders.
