Cystic Fibrosis Research Today is a free monthly online journal that collates and summarizes the latest research about Cystic Fibrosis, including details on symptoms, genetics, treatment, information.

Pulmonary surfactant, lung function, and endobronchial inflammation in cystic fibrosis.

Griese M, Essl R, Schmidt R, Rietschel E, Ratjen F, Ballmann M, Paul K,

Children's Hospital, University of Munich, Munich, Germany. matthias.griese@med.uni-muenchen.de

Cystic fibrosis (CF) lung disease is primarily a disease of the small airways. We hypothesized that even in patients with normal lung function, a reduced surfactant function would be present and favor small airway obstruction. Bronchoalveolar lavages from 76 patients with CF (5-31 years, median 11) with well-conserved lung function (FEV1 94% predicted, range 78-121) and from 10 healthy control subjects were investigated. The deviation of the biophysical surfactant performance from normal, assessed in a bubble surfactometer, was small; however, the ability of the surfactant to maintain the patency of a narrow airway (% open) was significantly reduced. Surfactant protein (SP)-C level was increased, SP-B and SP-D were unchanged, whereas SP-A was decreased. Among the patients with CF, neutrophilic inflammation was modestly related to a poorer surfactant activity, but not to lung function. SP-D was reduced in proportion to the degree of inflammation and in the presence of bacteria. These findings in a large cohort of patients with CF with normal lung function show that the endobronchial airway inflammation is linked to early perturbations of the biophysical properties and immunologic components of pulmonary surfactant and opens fields for novel therapeutic interventions.

Published 26 October 2004 in Am J Respir Crit Care Med, 170(9): 1000-5.
Full-text of this article is available online (may require subscription).

© 2004-2008 Cystic Fibrosis Research Today. All Rights Reserved.