Improvements in seasonal allergic disease with lactobacillus plantarum no. 14

Yuko Nagata, Mutsuko Yoshida, Haruki Kitazawa, Eiji Araki, Toshiharu Gomyo

    Research output: Contribution to journalArticlepeer-review

    38 Citations (Scopus)


    We conducted two randomized, placebo-controlled, double-blind studies of Lactobacillus plantarum No. 14 (LP14) in female students with seasonal allergic diseases. We also examined the mitogenic activity and cytokine inducibility of LP14 using Peyer's patch cells and mesenteric lymph node cells of swine. For subjects who took 8.7 x 108 of LP14, a significant improvement in ocular symptom-medication score was observed. In the placebo group, the T helper type 1 (Thl)/T helper type 2 (Th2) ratio tended to decrease after a 6-week intake period, while in the LP14 group, the percentage of Thl cells significantly increased. Post-intake eosinophil counts significantly increased in comparison to those at intake cessation in the placebo group, but it appeared to be suppressed in the LP14 group. There were no changes in fecal microflora. LP14 strongly induced the gene expression of Thl-type cytokines. This study indicates the clinical effects of LP14 on seasonal allergic diseases.

    Original languageEnglish
    Pages (from-to)1869-1877
    Number of pages9
    JournalBioscience, Biotechnology and Biochemistry
    Issue number9
    Publication statusPublished - 2010


    • Allergic symptom
    • Cytokine
    • T helper type 1 (Thl)/T helper type 2 (Th2) ratio

    ASJC Scopus subject areas

    • Biotechnology
    • Analytical Chemistry
    • Biochemistry
    • Applied Microbiology and Biotechnology
    • Molecular Biology
    • Organic Chemistry


    Dive into the research topics of 'Improvements in seasonal allergic disease with lactobacillus plantarum no. 14'. Together they form a unique fingerprint.

    Cite this