Effects of peppermint (Mentha piperita L.) extracts on experimental allergic rhinitis in rats

Toshio Inoue, Yukio Sugimoto, Hideki Masuda, Chiaki Kamei

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The present study was carried out to clarify the effects of extracts of the leaves of Mentha piperita L. on experimental allergic rhinitis. The 50% EtOH extract of peppermint inhibited histamine release from rat peritoneal mast cells induced by compound 48/80. The effect was dose-dependent and significant inhibition was observed at a concentration of 3 μg/ml. In addition, the 50% EtOH eluate separated from the 50% EtOH extract of peppermint by column chromatography (DIAION HP-20) was also effective in inhibiting histamine release at a concentration of 1 μg/ml. Nasal symptoms, sneezing and nasal rubbing induced by antigen challenge in actively sensitized rats were inhibited by oral administration of the 50% EtOH eluate. Significant inhibition of sneezing and nasal rubbing was observed at doses of 300 and 1000 mg/kg, p.o., respectively. Furthermore, the 50% EtOH eluate inhibited dye leakage into the nasal cavity of rats induced by antigen in a dose-dependent manner. These results suggested that extracts of Mentha piperita L. may be clinically effective in alleviating the nasal symptoms of allergic rhinitis.

Original languageEnglish
Pages (from-to)92-95
Number of pages4
JournalBiological and Pharmaceutical Bulletin
Volume24
Issue number1
DOIs
Publication statusPublished - Feb 19 2001

Keywords

  • Experimental allergic model
  • Histamine release
  • Mentha piperita L.
  • Nasal rubbing
  • Sneezing

ASJC Scopus subject areas

  • Pharmacology
  • Pharmaceutical Science

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