Erschienen in:
01.09.2020 | Allergies and the Environment (T Moran, Section Editor)
Role of Environmental Adjuvants in Asthma Development
verfasst von:
Donald N. Cook
Erschienen in:
Current Allergy and Asthma Reports
|
Ausgabe 9/2020
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Abstract
Purpose of Review
This review summarizes recent progress in our understanding how environmental adjuvants promote the development of asthma.
Recent Findings
Asthma is a heterogeneous set of lung pathologies with overlapping features. Human studies and animal models suggest that exposure to different environmental adjuvants activate distinct immune pathways, which in turn give rise to distinct forms, or endotypes, of allergic asthma. Depending on their concentrations, inhaled TLR ligands can activate either type 2 inflammation, or Th17 differentiation, along with regulatory responses that function to attenuate inflammation. By contrast, a different category of environmental adjuvants, proteases, activate distinct immune pathways and prime predominantly type 2 immune responses.
Summary
Asthma is not a single disease, but rather a group of pathologies with overlapping features. Different endotypes of asthma likely arise from perturbations of distinct immunologic pathways during allergic sensitization.