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We demonstrate that fragments of the extracellular matrix component hyaluronan induce inflammatory chemokine production in primary airway epithelial cells grown at an air-liquid interface. Furthermore, hyaluronan fragments use two distinct molecular pathways to induce IL-8 and IFN-\u03b3-inducible protein 10 (IP-10) chemokine expression in airway epithelial cells. Hyaluronan-induced IL-8 requires the MAP kinase pathway, whereas hyaluronan-induced IP-10 utilizes the NF-\u03baB pathway. The induction is specific to low-molecular-weight hyaluronan fragments as other glycosaminoglycans do not induce IL-8 and IP-10 in airway epithelial cells. We hypothesize that not only is the extracellular matrix a target of destruction in airway inflammation but it plays a critical role in perpetuating inflammation through the induction of cytokines, chemokines, and modulatory enzymes in epithelial cells. 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