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Article Dans Une Revue Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology Année : 2020

Severe preschool asthmatics have altered cytokine and anti-viral responses during exacerbation

Heloise Ducoin
  • Fonction : Auteur
Cecile Bonnel
  • Fonction : Auteur

Résumé

Preschool asthma/recurrent wheeze is a heterogeneous condition. Different clinical phenotypes have been described, including episodic viral wheeze (EVW), severe intermittent wheeze (SIW), and multiple-trigger wheeze (MTW). To compare clinical, viral, and inflammatory/immune profiling at exacerbation between MTW, SIW, and EVW phenotypes. Multicenter, prospective, observational cohort (VIRASTHMA-2). Children (1-5 years) with preschool asthma were enrolled during hospitalization for a severe exacerbation. History and anamnestic data, plasma, and nasal samples were collected at exacerbation (T1) and at steady state, 8 weeks later (T2), and sputum samples were collected at T1. A total of 147 children were enrolled, 37 (25%) had SIW, 18 (12.2%) EVW, and 92 (63%) MTW. They were atopic (47%), exposed to mold (22%) and cigarette smoke (50%), and prone to exacerbations (≥2 in the previous year in 70%). At exacerbation, at least one virus was isolated in 94% and rhinovirus in 75%, with no difference between phenotypes. Children with MTW and SIW phenotypes displayed lower plasma concentrations of IFN-γ (P = .002), IL-5 (P = .020), TNF-α (P = .038), IL-10 (P = .002), IFN-β (P = .036), and CXCL10 (P = .006) and lower levels of IFN-γ (P = .047) in sputum at exacerbation than children with EVW. At T2, they also displayed lower plasma levels of IFN-γ (P = .045) and CXCL10 (P = .013). Among preschool asthmatic children, MTW and SIW, prone to exacerbations, display lower systemic levels of Th1, Th2 cytokines, pro- and anti-inflammatory cytokines, and antiviral responses during severe virus-induced exacerbation.
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Dates et versions

hal-04419648 , version 1 (26-01-2024)

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Stephanie Lejeune, Muriel Pichavant, Ilka Engelmann, Laurent Beghin, Elodie Drumez, et al.. Severe preschool asthmatics have altered cytokine and anti-viral responses during exacerbation. Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology, 2020, Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology, ⟨10.1111/pai.13268⟩. ⟨hal-04419648⟩
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