Bacteria and viruses and their role in the preschool wheeze to asthma transition

© 2024 The Authors. Pediatric Allergy and Immunology published by European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd..

Wheezing is the cardinal symptom of asthma; its presence early in life, mostly caused by viral infections, is a major risk factor for the establishment of persistent or recurrent disease. Early-life wheezing and asthma exacerbations are triggered by common respiratory viruses, mainly rhinoviruses (RV), and to a lesser extent, respiratory syncytial virus, parainfluenza, human metapneumovirus, coronaviruses, adenoviruses, influenza, and bocavirus. The excess presence of bacteria, several of which are part of the microbiome, has also been identified in association with wheezing and acute asthma exacerbations, including haemophilus influenza, streptococcus pneumoniae, moraxella catarrhalis, mycoplasma pneumoniae, and chlamydophila pneumonia. While it is not clear when asthma starts, its characteristics develop over time. Airway remodeling already appears between the ages of 1 and 3 years of age even prior to the presence of atopic inflammation or an asthma diagnosis. The role of genetic defect or variations hampering the airway epithelium in response to environmental stimuli and severe disease morbidity are now considered as major determinants for early structural changes. Repeated viral infections can induce and perpetuate airway hyperresponsiveness. Allergic sensitization, that often precedes infection-induced wheezing, shifts inflammation toward type-2, while common respiratory infections themselves promote type-2 inflammation. Nevertheless, most children who wheeze with viral infections during infancy and during preschool years do not develop persistent asthma. Multiple factors, including illness severity, viral etiology, allergic sensitization, and the exposome, are associated with disease persistence. Here, we summarize current knowledge and developments in infection epidemiology of asthma in children, describing the known impact of each individual agent and mechanisms of transition from recurrent wheeze to asthma.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:35

Enthalten in:

Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology - 35(2024), 3 vom: 05. März, Seite e14098

Sprache:

Englisch

Beteiligte Personen:

Papadopoulos, Nikolaos G [VerfasserIn]
Apostolidou, Evaggelia [VerfasserIn]
Miligkos, Michael [VerfasserIn]
Xepapadaki, Paraskevi [VerfasserIn]

Links:

Volltext

Themen:

Asthma
Asthma inception
Journal Article
Review
Viral infections
Wheezing

Anmerkungen:

Date Completed 07.03.2024

Date Revised 07.03.2024

published: Print

Citation Status MEDLINE

doi:

10.1111/pai.14098

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369352815