title: Potential role of the "NADPH oxidases" (NOX/DUOX) family in cystic fibrosis.
abstract: Cystic fibrosis (CF), is the most common life-shortening autosomal recessive disorder in Caucasians. It is caused by mutations in a single gene on the long arm of chromosome 7 that encodes the cystic fibrosis transmembrane conductance regulator (CFTR) protein. CF is characterized by abnormal Na+ and Cl- ion transport in several tissues, including the lungs, pancreas, gastrointestinal tract, liver, sweat glands, and male reproductive system. Progressive pulmonary disease is the dominant clinical feature of CF and accounts for morbidity and mortality. The inflammation characterized by an overabundance of activated neutrophils and macrophages on the respiratory epithelial surface is associated to a high production of reactive oxygen species (ROS) which contribute to the pathogenesis of cystic fibrosis. ROS could have different origins but the role of the NADPH oxidase system is essential. The "NADPH oxidases" (NOX/DUOX) family is an enzymatic complex formed by cytosolic and membrane subunits. Until now several homologues of the phagocytic NADPH oxidase have been identified in different tissues and it has been shown that the lungs preferentially expressed DUOX1-2. Thus, DUOX1-2 could be implicated in the anti-infectious defense system. The role of DUOX enzymes as a source of ROS in cystic fibrosis is examined as they could contribute to a better understanding of molecular mechanisms in CF. Moreover they could be a potential target for a new therapeutic approach.
authors.affiliation: Inserm U773, Centre de recherche biomédicale Bichat Beaujon CRB3, Université Paris 7 Denis Diderot, Paris.
authors.forename: N
authors.initials: N
authors.lastname: Pongnimitprasert
authors.forename: J
authors.initials: J
authors.lastname: El-Benna
authors.forename: M J
authors.initials: MJ
authors.lastname: Foglietti
authors.forename: M A
authors.initials: MA
authors.lastname: Gougerot-Pocidalo
authors.forename: M
authors.initials: M
authors.lastname: Bernard
authors.forename: F
authors.initials: F
authors.lastname: Braut-Boucher
mesh_terms: D003550:Cystic Fibrosis / Q000201:enzymology / Q000209:etiology* / Q000235:genetics / Q000378:metabolism; D019005:Cystic Fibrosis Transmembrane Conductance Regulator / Q000235:genetics; D000074623:Dual Oxidases; D005260:Female; D006801:Humans; D008297:Male; D008565:Membrane Proteins; D000074664:NADPH Oxidase 5; D019255:NADPH Oxidases / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D018384:Oxidative Stress; D017382:Reactive Oxygen Species / Q000378:metabolism
chemical_list: D008565:Membrane Proteins; D017382:Reactive Oxygen Species; D019005:Cystic Fibrosis Transmembrane Conductance Regulator; D000074623:Dual Oxidases; D000074664:NADPH Oxidase 5; D019255:NADPH Oxidases; C431571:NOX5 protein, human; C431513:DUOX1 protein, human