Dichotomous effect of a traditional Japanese medicine, Bu-zhong-yi-qi-tang on allergic asthma in mice

Ryotaro Ishimitsu, Hitoshi Nishimura, Hideyuki Kawauchi, Takuya Kawakita, Yasunobu Yoshikai

    Research output: Contribution to journalArticle

    39 Citations (Scopus)

    Abstract

    To determine the potentiality of prophylactic and/or therapeutic approaches using a traditional herbal medicine, Bu-zhong-yi-qi-tang (Japanese name: Hochu-ekki-to, HOT), for the control of allergic disease, we examined the effects of oral administration of HOT on a murine model of asthma allergic responses. When oral administration of HOT was begun at the induction phase immediately after OVA sensitization, eosinophilia and Th2-type cytokine production in the airway were reduced in OVA-sensitized mice following OVA inhalation. The serum levels of OVA-specific immunoglobulin (Ig)E and IgG1 were significantly decreased, whereas the level of OVA-specific IgG2a was increased. Interleukin (IL)-4 production by spleen T cells in response to OVA was significantly suppressed, while Interferon (IFN)-γ production was increased in mice treated with HOT in the induction phase. On the other hand, HOT given in the eliciting phase induced a predominant Th2 response with increased IgE production in OVA-sensitized mice following OVA inhalation. These results suggest that the oral administration of HOT dichotomously modulates allergic inflammation in a murine model for asthma, thus offering a different approach for the treatment of allergic disorders.

    Original languageEnglish
    Pages (from-to)857-865
    Number of pages9
    JournalInternational Immunopharmacology
    Volume1
    Issue number5
    DOIs
    Publication statusPublished - Apr 21 2001

    All Science Journal Classification (ASJC) codes

    • Immunology and Allergy
    • Immunology
    • Pharmacology

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