Abstract
The effect of aqueous extract of Isodon japonicus Hara (Labiatae) (IJAE) on mast cell-mediated immediate-type allergic reactions was investigated. IJAE inhibited systemic allergic reaction induced by compound 48/80. When IJAE was pretreated at the same concentrations with systemic allergic reaction test, the plasma histamine levels were reduced in a dose-dependent manner. IJAE also inhibited local allergic reaction activated by anti-dinitrophenyl (DNP) IgE antibody. IJAE dose-dependently inhibited the histamine release from rat peritoneal mast cells (RPMC) activated by compound 48/80 or anti-DNP IgE. IJAE inhibited the secretion of tumor necrosis factor-α (TNF-α) and interleukin (IL)-6 in phorbol 12-myristate 13-acetate (PMA) plus calcium ionophore A23187-stimulated human mast cell line (HMC-1) cells. In addition, the expression of TNF-α mRNA in HMC-1 cells was inhibited by IJAE. These results indicate that IJAE may be beneficial in the regulation of immediate-type allergic reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 273-284 |
| Number of pages | 12 |
| Journal | Immunopharmacology and Immunotoxicology |
| Volume | 26 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2004 |
Keywords
- Allergic reaction
- Anti-DNP IgE
- Compound 48/80
- Isodon japonicus
- Mast cells
- TNF-α mRNA
- TNF-αIL-6