title: Do inhaled corticosteroids impair long-term growth in prepubertal cystic fibrosis patients?
abstract: Despite absence of clear proof of efficacy, the use of inhaled corticosteroids (ICS) is widespread in cystic fibrosis (CF) patients. Therefore, the effect of ICS on lung function and other clinical variables was studied in 27 prepubertal CF children with mild to moderate lung disease. In a prospective double-blind case-controlled study, fluticasone propionate 500 microg or placebo were administered twice daily during 12 months. The mean (standard error of the mean, SEM) patient age was 8.2 (0.6) years in the placebo group and 9.0 (0.5) years in the fluticasone group. The mean (SEM) forced expiratory volume in 1 s (FEV(1)) was 91% (4%) in the placebo group and 86% (4%) in the fluticasone group. There was no statistically significant difference in the evolution of lung function and the number of respiratory exacerbations between groups. However, longitudinal growth in fluticasone patients was significantly slower than in placebo patients: 3.96 (0.29) cm versus 5.49 (0.38) cm [p<0.005, analysis of variance (ANOVA)] over the 12-month study duration. This resulted in a significant change in height standard deviation score (SDS) of -0.38 (0.09) in the fluticasone group versus -0.01 (0.07) in the placebo group (p<0.003, ANOVA). No catch-up growth was noted 1-2 years after discontinuation of inhaled steroids. The use of high-dose ICS in CF patients with mild lung disease may lead to persistent growth impairment.
authors.affiliation: Department of Pediatric Pulmonology and Cystic Fibrosis Clinic, University Hospital of Leuven, Herestraat 49, 3000 Leuven, Belgium. Christiane.deboeck@uz.kuleuven.ac.be
authors.forename: Kris
authors.initials: K
authors.lastname: De Boeck
authors.forename: Frans
authors.initials: F
authors.lastname: De Baets
authors.forename: Anne
authors.initials: A
authors.lastname: Malfroot
authors.forename: Kristine
authors.initials: K
authors.lastname: Desager
authors.forename: Françoise
authors.initials: F
authors.lastname: Mouchet
authors.forename: Marijke
authors.initials: M
authors.lastname: Proesmans
mesh_terms: D000280:Administration, Inhalation; D000730:Androstadienes / Q000008:administration & dosage* / Q000009:adverse effects*; D000893:Anti-Inflammatory Agents / Q000008:administration & dosage* / Q000009:adverse effects*; D002648:Child; D003550:Cystic Fibrosis / Q000188:drug therapy*; D004311:Double-Blind Method; D005260:Female; D000068298:Fluticasone; D005938:Glucocorticoids / Q000008:administration & dosage* / Q000009:adverse effects*; D006801:Humans; D008297:Male; D013997:Time Factors
chemical_list: D000730:Androstadienes; D000893:Anti-Inflammatory Agents; D005938:Glucocorticoids; D000068298:Fluticasone