Oral treatment with probiotics reduces allergic symptoms in ovalbumin-sensitized mice: a bacterial strain comparative

S Hougee1, A J M Vriesema, S C Wijering

  • 1Danone Research-Centre for Specialised Nutrition, Wageningen, The Netherlands. sander.hougee@danone.com

Abstract

Insights

Bifidobacterium breve M-16V demonstrated significant antiallergic effects in a mouse model of allergic asthma. This probiotic strain effectively reduced airway hyperresponsiveness and inflammation, identifying it as a potent therapeutic candidate.

Area of Science:

  • Microbiology
  • Immunology
  • Allergy Research

Background:

  • Intestinal microbiota plays a role in allergic disorders.
  • Probiotics are being investigated as potential antiallergic therapies.

Purpose of the Study:

  • To identify the most effective bacterial strain for antiallergic treatment from a panel of six.
  • To evaluate antiallergic effects in a mouse model of ovalbumin (OVA)-induced allergic asthma.

Main Methods:

  • Six bacterial strains, including Bifidobacterium breve M-16V and Lactobacillus plantarum NumRes8, were administered to OVA-sensitized mice.
  • Assessed airway hyperresponsiveness, pulmonary inflammation markers (cytokines, immune cells), OVA-specific IgE, IgG1, and IgG2a.
  • Evaluated acute allergic skin reactions to OVA.

Main Results:

  • B. breve M-16V and L. plantarum NumRes8 inhibited methacholine response, reduced eosinophils, and decreased OVA-specific IgE and IgG1.
  • B. breve M-16V uniquely reduced key inflammatory cytokines (IL-4, IL-5, IL-10) and acute allergic skin reactions.
  • Other tested strains did not simultaneously impact all measured parameters.

Conclusions:

  • Bifidobacterium breve M-16V was identified as the most potent antiallergic bacterial strain.
  • This strain shows promise for managing allergic asthma.

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