Eosinophil Production of PGD2 in Aspirin-Exacerbated Respiratory Disease

Abstract

Background-Aspirin-exacerbated respiratory disease (AERD) differs from aspirin tolerant disease due in part to eosinophilic tissue infiltration and over-expression of arachidonic acid metabolic pathway components that lead to enhanced secretion of cysteinyl leukotrienes (CysLT) and prostaglandin D 2 (PGD 2 ) observed constitutively and, paradoxically, in response to aspirin and other cyclooxygenase inhibitors. We have previously demonstrated the capacity of interferon (IFN)-γ to drive CysLT expression and response.