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The "Microflora Hypothesis" of allergic disease
Andrew Shreiner1, Gary B Huffnagle, Mairi C Noverr
1Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, University of Michigan Medical School, Ann Arbor, Michigan, USA.
Advances in Experimental Medicine and Biology
|October 10, 2008
Summary
The gut microbiota may play a role in allergy development. Altering the microbiota in mice at the time of allergen exposure led to allergic airway responses, supporting the Microflora Hypothesis for allergy.
Area of Science:
- Immunology
- Microbiology
- Environmental Health
Background:
- Allergic disease prevalence has increased significantly in Westernized populations.
- Differences in microbiota composition are observed between allergic and non-allergic individuals, detectable before atopy onset.
- Western lifestyle factors like antibiotic use and diet impact microbiota and are linked to allergy.
Purpose of the Study:
- To discuss the Microflora Hypothesis for allergy.
- To explore the potential role of microbiota in the development and treatment of allergic diseases.
- To present findings from a study investigating the impact of microbiota alteration on allergic responses in mice.
Main Methods:
- Review of existing literature on allergy, microbiota, and environmental factors.
- Discussion of the Microflora Hypothesis.
- Experimental study in mice involving microbiota alteration at the time of allergen exposure.
Main Results:
- The Microflora Hypothesis suggests an "unhealthy" microbiota contributes to allergy development.
- Restoring a "healthy" microbiota may offer preventative or therapeutic benefits for allergy.
- Mice with altered microbiota at initial allergen exposure developed allergic airway responses.
Conclusions:
- The microbiota composition is a critical factor in the development of allergic diseases.
- Targeting the microbiota, potentially through probiotics, could be a strategy for allergy prevention and treatment.
- Further research is warranted to fully elucidate the mechanisms linking microbiota and allergy.
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