Mechanisms of asthma
Airway inflammation is a key factor in the mechanisms of asthma. Articles published in the Journal of Allergy and Clinical Immunology this past year have highlighted the utility of investigative bronchoscopy with segmental antigen challenge and induced sputum analyses to evaluate features of airway inflammation in relationship to asthma severity.
Peripheral blood cell generation of cytokines IFN-γ (TH1) and IL-5 (TH2) was used to evaluate the relationship of the balance of TH1/TH2 cytokines to asthma persistence and severity in a 42-year, longitudinal study. Chemokines, including thymus and activation-regulated chemokine, are important to the regulation of inflammation and IgE synthesis.
Their potential role in asthma has also been evaluated. Finally, albuterol (R)- and (S)-enantiomers may have distinct effects on airway relaxation and regulation of inflammation, suggesting the possibility that monoisomeric therapy has therapeutic advantages. The potential contribution of genetic factors and mechanisms to airway inflammation and remodeling also continues to be an area of intense investigation
Journal of Clinical Immunology and infectious diseases
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