Abstract
Neuroinflammation is an important contributor to pathogenesis of age-related neurodegenerative disorders such as Alzheimer's or Parkinson's disease. Accumulating evidence indicates that inhibition of microglia-mediated neuroinflammation may become a reliable protective strategy for neurodegenerative processes. Flavonoids, widely distributed in the vegetable kingdom and in foods such as honey, have been suggested as novel therapeutic agents for the reduction of the deleterious effects of neuroinflammation. The present study investigated the potential protective effect of a honey flavonoid extract (HFE) on the production of pro-inflammatory mediators by lipopolysaccharide-stimulated N13 microglia. The results show that HFE significantly inhibited the release of pro-inflammatory cytokines such as TNF-α and IL-1β. The expressions of iNOS and the production of reactive oxygen intermediates (ROS) were also significantly inhibited. Accordingly, the present study demonstrates that HFE is a potent inhibitor of microglial activation and thus a potential preventive-therapeutic agent for neurodegenerative diseases involving neuroinflammation.
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