Early pulmonary infection, inflammation, and clinical outcomes in infants with cystic fibrosis.

Abstract:

:A thorough understanding of the early natural history of cystic fibrosis (CF) lung disease is critical for the development of effective interventions in the youngest patients. We assessed the evolution of pulmonary infection, inflammation, and clinical course among 40 infants over a 2-year period through annual bronchoalveolar lavage (BAL) for culture and measurements of pro- and anti-inflammatory cytokines, semiannual infant pulmonary function testing, and quarterly clinical evaluations. Both the prevalence of CF pathogens and their density in BAL fluid increased with age. Infants had neutrophilic lower airway inflammation and elevated IL-8 concentrations independent of whether CF pathogens were recovered. Total leukocyte and neutrophil densities and IL-8 concentrations increased with density of CF pathogens in BAL fluid, whether the isolated organism was P. aeruginosa or another pathogen. IL-10 concentrations were similar in CF subjects and non-CF historical controls. Infants generally had suboptimal growth (low weight and height percentiles) and obstructive lung disease (decreased expiratory flows and air trapping). Subjects from whom CF pathogens were isolated at > 10(5) cfu/mL had the worst air trapping and lowest Brasfield chest X-ray scores. Our findings provide a foundation for future studies of early intervention in CF lung disease, including antimicrobial and anti-inflammatory therapy.

journal_name

Pediatr Pulmonol

journal_title

Pediatric pulmonology

authors

Rosenfeld M,Gibson RL,McNamara S,Emerson J,Burns JL,Castile R,Hiatt P,McCoy K,Wilson CB,Inglis A,Smith A,Martin TR,Ramsey BW

doi

10.1002/ppul.1144

subject

Has Abstract

pub_date

2001-11-01 00:00:00

pages

356-66

issue

5

eissn

8755-6863

issn

1099-0496

pii

10.1002/ppul.1144

journal_volume

32

pub_type

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