Water-soluble low-molecular-weight b-(1, 3–1, 6) D-Glucan inhibit cedar pollinosis

Authors

  • Tomoko Jippo Department of Food and Nutrition, Faculty of Human Life Sciences, Senri Kinran University, 5-25-1 Fujishirodai, Suita, Osaka 565-0873, Japan;
  • Toshio Suzuki Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, Sugimoto 3-3-138, Sumiyoshi-ku, Osaka 558-8585, Japan
  • Harumi Sato Department of Food and Nutrition, Faculty of Human Life Sciences, Senri Kinran University, 5-25-1 Fujishirodai, Suita, Osaka 565-0873, Japan;
  • Yuko Kobayashi Department of Food and Nutrition, Faculty of Human Life Sciences, Senri Kinran University, 5-25-1 Fujishirodai, Suita, Osaka 565-0873, Japan;
  • Munekazu Shigekawa Department of Food and Nutrition, Faculty of Human Life Sciences, Senri Kinran University, 5-25-1 Fujishirodai, Suita, Osaka 565-0873, Japan;

DOI:

https://doi.org/10.31989/ffhd.v5i2.173

Abstract

Background: The incidences of allergenic diseases such as allergenic rhinitis, atopic dermatitis, asthma, and food allergies have increased in several countries. Mast cells have critical roles in various biological processes related to allergenic diseases. Mast cells express the high-affinity receptor for immunoglobulin (Ig) E on their surface. The interaction of multivalent antigens with surface-bound IgE causes the secretion of granule-stored mediators, as well as the de novo synthesis of cytokines. Those mediators and cytokines proceed the allergenic diseases. We investigated the effects of water-soluble, low-molecular-weight b-(1, 3–1, 6) D-glucan isolated from Aureobasidium pullulans 1A1 strain black yeast (LMW-b-glucan) on mast cell-mediated anaphylactic reactions. We reported that LMW-b-glucan dose-dependently inhibited the degranulation of mast cells. Furthermore, we found that orally administered LMW-b-glucan inhibited the IgE-mediated passive cutaneous anaphylaxis (PCA) reaction in mice. Here, we examined if LMW-b-glucan had any effects on Japanese cedar pollinosis.

Findings: In a clinical study, a randomized, single-blind, placebo-controlled, parallel group study in 65 subjects (aged 22-62) was performed. This study was undertaken 3 weeks before the cedar pollen season and until the end of the cedar pollen season. During the study, all subjects consumed one bottle of placebo or LMW-b-glucan daily, and all subjects were required to record allergenic symptoms in a diary. The LMW-b-glucan group had a significantly lower prevalence of sneezing, nose-blowing, tears, and hindrance to the activities of daily living than the placebo group.

Conclusions: These results suggest that LMW-b-glucan could be an effective treatment for allergenic diseases.

Key Words: Mast cell, anti-allergy, b-glucan, cedar pollinosis

Downloads

Published

2015-02-25

Issue

Vol. 5 No. 2 (2015): February 2015

Section

Short Report

License

Any manuscripts or substantial parts of it, submitted to the journal must not be under consideration by or previously published in any other journal or citable form. Authors are required to ensure that no material submitted as part of a manuscript infringes existing copyrights or the rights of a third party. In submitting one's article in any form, the author has assigned the FFC publishing rights and has agreed to an automatic transfer of the copyright to the publisher. This is so that the FFC may create print option journals, for example, at the FFC’s discretion. If the author wishes to distribute their works by means outside of the FFC, for example within their community, they will have to place a request. 

 

Correspondence concerning articles published in Functional Foods in Health and Disease is encouraged. While derivative works (adaptations, extensions on the current work, etc.) are allowed, distribution of the modified material is not allowed without permission from the FFC.