title: Bronchoalveolar interleukin-1 beta in infants on day 1 of life.
abstract: Interleukin-1 beta (IL-1 beta) a proinflammatory cytokine associated with adult lung diseases, may play a role in the development of bronchopulmonary dysplasia (BPD). Concentrations of IL-1 beta were measured in bronchoalveolar lavage fluid from 17 infants on day 1 of life and in 18 infants intubated until day 14. IL-1 beta was detected in 31 of 35 samples. Day 14 concentrations were significantly higher than those obtained on day 1. The four infants who had BPD had significantly higher IL-1 beta levels than those who received oxygen for less than a week or for 1 to 4 weeks. Day 1 IL-1 beta concentration was related to the neutrophil count and inversely to gestational age. IL-1 beta is present in the majority of newborn infants intubated on day 1 or at 2 weeks of life and is elevated during the first 24 hours in infants who will subsequently require longer ventilatory support. It is also elevated in infants who have a stronger pulmonary inflammatory response.
authors.affiliation: Department of Pediatrics, Children's Medical Center, Medical College of Virginia, Richmond 23298-0276.
authors.forename: H J
authors.initials: HJ
authors.lastname: Rozycki
mesh_terms: D000367:Age Factors; D015415:Biomarkers / Q000032:analysis; D001992:Bronchoalveolar Lavage Fluid / Q000276:immunology*; D001997:Bronchopulmonary Dysplasia / Q000276:immunology*; D006801:Humans; D007231:Infant, Newborn; D007375:Interleukin-1 / Q000032:analysis*; D010102:Oxygen Inhalation Therapy
chemical_list: D015415:Biomarkers; D007375:Interleukin-1