ArticlePediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology2024
Association between nasopharyngeal airway lipidome signatures of infants with severe bronchiolitis and risk of recurrent wheeze: A prospective multicenter cohort study.
Article in Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Abstract
backgroundInfants hospitalized for bronchiolitis are at high risk for developing recurrent wheeze in childhood. The role of airway lipids in the link between these two conditions remains unclear. This study aimed to identify the association between airway lipids in infants hospitalized for bronchiolitis and the development of recurrent wheeze, with a focus on immunoglobulin E (IgE) sensitization.
methodsIn a multicenter prospective cohort study of 919 infants (age <1 year) hospitalized for bronchiolitis, we performed lipidomic profiling of nasopharyngeal airway specimens collected at hospitalization. We first identified lipid modules composed of highly correlated lipids by performing weighted correlation network analysis. We then examined the longitudinal association of those lipid modules with the rate of recurrent wheeze by age 3 years after discharge from hospitalization for bronchiolitis. We also examined the associations of lipid modules with IgE non-sensitized (i.e., neither sensitized at admission nor at age 3 years) and IgE-sensitized (i.e., sensitized at admission and/or at age 3 years) recurrent wheeze by age 3 years, respectively.
resultsOur analysis identified 15 distinct lipid modules in the nasopharyngeal airway lipidome data. Overall, lipid modules composed of triacylglycerols (hazard ratio [HR] 1.78, 95% confidence interval [CI] 1.26-2.51, FDR < 0.01) and sphingolipids (HR 1.74, 95% CI 1.25-2.44, FDR <0.01) had the strongest associations with recurrent wheeze development. Stratification by IgE sensitization revealed differential associations. For example, the module composed of triacylglycerols was significantly associated with IgE non-sensitized recurrent wheeze, whereas the module composed of sphingolipids was significantly associated with IgE-sensitized recurrent wheeze (both FDR <0.05).
conclusionDistinct nasopharyngeal airway lipid modules are associated with recurrent wheeze development following severe bronchiolitis, with different patterns based on IgE sensitization status.
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