Piper nigrum Fruit Extract Prevents TMA-Induced Allergic Contact Dermatitis by Regulating Th2 Cytokine Production

Sung Keun Jung, Dae Woon Choi, Chang Hwa Jung, Yang-Ji Kim, Sun Young Jung and Dong-Hwa Shon

Journal of Agricultural Science, 2015, vol. 7, issue 2, 135

Abstract: Allergic contact dermatitis (ACD) remains a leading skin disease in many countries. In this study, we investigated the preventive effect of Piper nigrum fruit extract (PFE) on trimellitic anhydride (TMA)-induced dermatitis and its potential mechanism of action. Oral administration of PFE and prednisolone (PS) significantly suppressed TMA-induced increases in ear, epidermal thickness, and infiltration of CD4+ cells, while abnormal expression of IgE, mMCP-1, IL-1B and IL-1B mRNA was also significantly counteracted by oral administration of PFE. PFE also significantly suppresses TMA-induced IL-4 and IL-5 production and IL-4 mRNA expression in vivo, as well as OVA-induced IL-4, IL-5, and IL-13 production and GATA3 mRNA expression ex vivo, and IL-4 induced STAT6 phosphorylation in primary cultured splenocytes and HaCaT cells. Interestingly, the PFE component piperine significantly suppressed OVA-induced IL-4, IL-5, and IL-13 secretion ex vivo. Taken together, these results suggest that PFE could be useful in suppressing allergic contact dermatitis.

Date: 2015
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