alexa Rationale for hypertonic saline therapy for cystic fibrosis lung disease.
Pulmonology

Pulmonology

Journal of Pulmonary & Respiratory Medicine

Author(s): Tarran R, Donaldson S, Boucher RC

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Abstract Cystic fibrosis (CF) is caused by alterations in the CF transmembrane conductance regulator ( CFTCR) gene. More than 1400 mutations in the CFTCR gene have been described, but the most common mutation (noted in 70\% of CF chromosomes) is DeltaF508. Alterations in the CFTCR gene result in deranged sodium and chloride ion transport channels. This leads to failure of airway epithelia to hydrate their surfaces normally, particularly in response to infectious or toxic insults. Additional effects include mucus adhesion to airway surface, chronic inflammation, and infections. The concept that airway surface dehydration can cause CF-like lung disease is supported by in vitro data and in vivo animal models. Rehydrating airway surfaces may reduce or prevent lung injury and damage. Short- and longer term studies have shown that inhalation of hypertonic saline is well tolerated and improves lung function, reduces exacerbations, and improves quality of life in CF patients. This review discusses the importance of airway epithelial sodium and chloride channels in the pathogenesis of CF, and strategies (particularly the use of inhaled hypertonic saline) to reverse or minimize lung inflammation and injury in this disease. This article was published in Semin Respir Crit Care Med and referenced in Journal of Pulmonary & Respiratory Medicine

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