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Oily fraction of Semecarpus anacardium Linn nuts involves protein kinase C activation for its pro-inflammatory
Yamini B Tripathi1, Nidhi Pandey, Deepshikha Tripathi
1Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India. yaminiok@yahoo.com
Abstract:
The oily fraction (non polar fraction-NPF) of S. anacardium (SA) significantly increased the expression of protein kinase C-delta (PKC-delta) in macrophages in concentration dependent manner, which was similar to phorbol myristate acetate (PMA) response. Further, H-7 (1-(5-isoquinolinesulphonyl)-2-methylpiperazine), an inhibitor of PKC significantly inhibited this NPF mediated response in a concentration dependent manner. In the post treatment kinetics, H-7 showed this inhibition only up to 6 min post NPF/PMA addition, but in similar condition, quercetin, a flavone with reported antioxidant property, showed this inhibition only up to 2 min. The results clearly suggest that oily fraction of SA nuts enhances the expression of PKC protein, which may be responsible for its reported pro-inflammatory property.
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