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  • Title: Benzyl isothiocyanate exhibits anti-inflammatory effects in murine macrophages and in mouse skin.
    Author: Lee YM, Seon MR, Cho HJ, Kim JS, Park JH.
    Journal: J Mol Med (Berl); 2009 Dec; 87(12):1251-61. PubMed ID: 19760383.
    Abstract:
    Benzyl isothiocyanate (BITC) is detected in abundance in Brassica vegetables, and some previous studies have demonstrated that BITC may potentially function as a chemopreventive agent in humans. This study examined whether BITC inhibits lipopolysaccharide (LPS)-induced inflammatory responses in Raw 264.7 macrophages and 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ear edema formation. The treatment of macrophages with various concentrations of BITC resulted in a dose-dependent reduction in the LPS-induced secretion of interleukin (IL)-1beta, TNF-alpha, and IL-6 and their corresponding mRNA levels, as well as in the production of nitric oxide and PGE(2). Consistent with these findings, BITC inhibited the LPS-induced expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 proteins and their corresponding mRNAs. BITC inhibited LPS-induced phosphorylation and the degradation of the inhibitor of kappaBalpha, translocation of p65 into the nucleus, and the DNA binding activity and transcriptional activity of NFkappaB. Moreover, the LPS-stimulated phosphorylation of extracellular signal regulated kinase (ERK)1/2 and Akt was suppressed by BITC. BITC also inhibited ear edema formation and the protein expression of iNOS and COX-2 in mouse skin treated with TPA. We demonstrate that BITC is a potent anti-inflammatory agent, and the anti-inflammatory properties of BITC may result from the downregulation of NFkappaB signaling.
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