For research use only. Not Intended for Therapeutic Use!
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Piceatannol is a selective inhibitor of protein tyrosine kinase Syk. It could inhibit ICa,L, Ito, IKr, Ca2+ transients and Na+-Ca2+ exchange except IK1. Shows multiple biological activities such as anti-inflammatory, antiproliferative and immunomodulatory effects.
In vitro: The treatment of human myeloid cells with piceatannol suppressed TNF-induced DNA binding activity of NF-κB. The effect of piceatannol was not restricted to myeloid cells, as TNF-induced NF-κB activation was also suppressed in lymphocyte and epithelial cells. Piceatannol also inhibited NF-κB activated by H2O2, PMA, LPS, okadaic acid, and ceramide. 
. Kazuhiro Ashikawa et al. Piceatannol Inhibits TNF-Induced NF-κB Activation and NF-κB-Mediated Gene Expression Through Suppression of IκBα Kinase and p65 Phosphorylation. J Immunol, 2002 Dec 1, 169(11):6490-7.
. Wen-Pin Chen et al. Piceatannol, a derivative of resveratrol, moderately slows INa inactivation and exerts antiarrhythmic action in ischaemia-reperfused rat hearts. Br J Pharmacol.2009 Jun, 157(3), 381-391.