4.7 Article

Inhibition of neuroinflammation by cinnamon and its main components

Journal

FOOD CHEMISTRY
Volume 138, Issue 4, Pages 2275-2282

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2012.12.020

Keywords

Cinnamon; Cinnamaldehyde; Neuroinflammation; Microglia

Funding

  1. National Science Council of the Republic of China, Taiwan [NSC101-2320-B-264-001-MY3]

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Uncontrolled activation of microglia contributes to neuroinflammation, which is highly involved in the development of neurodegenerative diseases. Although cinnamon has neuro-protective properties, its capacity to inhibit neuroinflammation has not been investigated and its active compounds remain unclear. Therefore, the composition of cinnamon extract was analysed by LC-MS and the ability of cinnamon and its main constituents to inhibit neuroinflammation was evaluated using a lipopolysaccharide (LPS)-activated BV2 microglia culture system. In total, 50 mu g/mL cinnamon extract decreased significantly the production and expression of nitric oxide (NO), interleukin (IL)-1 beta, IL-6, and tumor necrosis factor (TNE)-alpha, in LPS-activated BV2 microglia. Blocking of nuclear factor-kappa B (NF-kappa B) activation was the most likely mechanism responsible for inhibition by cinnamon of neuroinflammation. Among the eight tested compounds, cinnamaldehyde had the greatest anti-neuroinflammatory capacity. Experimental results suggest that cinnamon may have a potential therapeutic effect against neurodegenerative diseases and its potent anti-neuroinflammatory capacity was primarily attributed to cinnamaldehyde. (C) 2012 Elsevier Ltd. All rights reserved.

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