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  • Title: Effect of Schizonepeta tenuifolia extract on mast cell-mediated immediate-type hypersensitivity in rats.
    Author: Shin TY, Jeong HJ, Jun SM, Chae HJ, Kim HR, Baek SH, Kim HM.
    Journal: Immunopharmacol Immunotoxicol; 1999 Nov; 21(4):705-15. PubMed ID: 10584206.
    Abstract:
    We investigated the effect of an aqueous extract of Schizonepeta tenuifolia (STAE) on mast cell-mediated immediate-type hypersensitivity. STAE inhibited systemic allergic reaction induced by compound 48/80 in rats dose-dependently. STAE also inhibited plasma histamine levels induced by compound 48/80. STAE inhibited local allergic reaction activated by anti-dinitrophenyl (DNP) IgE. In addition, STAE does-dependently inhibited histamine release from rat peritoneal mast cells (RPMC) activated by compound 48/80 or anti-DNP IgE. However, STAE had a significant enhancing effect on anti-DNP IgE-induced tumor necrosis factor-alpha (TNF-alpha) production from RPMC. These results indicate that STAE inhibits immediate-type hypersensitivity and suggest that STAE can selectively activate the TNF-alpha production from RPMC.
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