Unique Associations Between Complement Split Products and Pollen Species in Adults with Respiratory Allergic Disease: A Pilot Study

Background

Complement split product (CSP) anaphylatoxins, C3a and C5a, are important mediators of innate immune responses and have been implicated in the pathogenesis of asthma. Environmental pollen exposure is a trigger of asthma symptoms, leading to generation of CSP, which amplify allergic responses. The relationship between seasonal pollen levels, complement activation and clinical outcomes of asthma control remain unknown. This exploratory pilot study evaluated the association between concurrent tree, grass, and weed pollen exposure, CSP levels, and measures of asthma control in adults with asthma.