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Proteases and cystic fibrosis Voynow JA; Fischer BM; Zheng SInt J Biochem Cell Biol 2008[]; 40 (6-7): 1238-45Cystic fibrosis is the most common, inherited fatal disease in Caucasians. The major cause of morbidity and mortality is chronic lung disease due to infection and inflammation in the airways leading to bronchiectasis and respiratory failure. The signature pathologic features of CF lung disease including abnormal mucus obstructing airways, chronic infection with Staphylococcus aureus, Pseudomonas aeruginosa and other gram negative bacteria, and a robust neutrophil-dominant airway inflammation, are exacerbated by unopposed proteases present at high concentrations in the ASL. There is strong evidence that proteases, particularly neutrophil elastase, contribute to the pathology of CF by impairing mucociliary clearance, interfering with innate immune functions, and perpetuating neutrophilic inflammation. The mechanisms employed by proteases to impact airway function in CF will be reviewed.|Cystic Fibrosis/etiology/*metabolism/microbiology/physiopathology[MESH]|Humans[MESH]|Inflammation/physiopathology[MESH]|Leukocyte Elastase/metabolism[MESH]|Neutrophils/enzymology[MESH]|Peptide Hydrolases/*metabolism[MESH]|Pseudomonas Infections/microbiology[MESH]|Staphylococcal Infections/microbiology[MESH] |
