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Biochem Biophys Res Commun. 2009 Apr 24;382(1):134-9. doi: 10.1016/j.bbrc.2009.02.160. Epub 2009 Mar 4.

6-Gingerol inhibits ROS and iNOS through the suppression of PKC-alpha and NF-kappaB pathways in lipopolysaccharide-stimulated mouse macrophages.

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Graduate Institute of Traditional Chinese Medicine, Chang Gung University, No. 259, Wen-Hwa 1st Road, Kwei-Shan Tao-Yuan 333, Taiwan.


Inflammation is involved in numerous diseases, including chronic inflammatory diseases and the development of cancer. Many plants possess a variety of biological activities, including antifungal, antibacterial and anti-inflammatory activities. However, our understanding of the anti-inflammatory effects of 6-gingerol is very limited. We used lipopolysaccharide (LPS)-stimulated macrophages as a model of inflammation to investigate the anti-inflammatory effects of 6-gingerol, which contains phenolic structure. We found that 6-gingerol exhibited an anti-inflammatory effect. 6-Gingerol could decrease inducible nitric oxide synthase and TNF-alpha expression through suppression of I-kappaB alpha phosphorylation, NF-kappaB nuclear activation and PKC-alpha translocation, which in turn inhibits Ca(2+) mobilization and disruption of mitochondrial membrane potential in LPS-stimulated macrophages. Here, we demonstrate that 6-gingerol acts as an anti-inflammatory agent by blocking NF-kappaB and PKC signaling, and may be developed as a useful agent for the chemoprevention of cancer or inflammatory diseases.

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