• Journal of Physiology & Pathology in Korean Medicine
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• v.23 no.3
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• pp.567-573
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• 2009

The present study was conducted to investigate the anti-allergic activity of HBT. We investigated the anti-allergic effects of HBT in RBL-2H3 basophilic leukemia cells by compound 48/80, a mast cell degranulator. HBT significantly inhibited ${\beta}$-hexosaminidase and histamine release from compound 48/80 stimulated RBL-2H3 cells. The in vitro anti-inflammatory activities of HBT in LPS-stimulated RAW 264.7 cells were investigated. HBT inhibited NO production in LPS-stimulated RAW 264.7 cells and effectively dowregulated the expression of iNOS mRNA and iNOS protein expression in LPS-stimulated RAW 264.7 cells. These result provide evidences that HBT may be beneficial in the treatment of allergic inflammtory disease.