Airway Microbiota Dynamics Uncover a Critical Window for Interplay of Pathogenic Bacteria and Allergy in Childhood Respiratory Disease.
Cell Host Microbe
; 24(3): 341-352.e5, 2018 09 12.
Article
in En
| MEDLINE
| ID: mdl-30212648
ABSTRACT
Repeated cycles of infection-associated lower airway inflammation drive the pathogenesis of persistent wheezing disease in children. In this study, the occurrence of acute respiratory tract illnesses (ARIs) and the nasopharyngeal microbiome (NPM) were characterized in 244 infants through their first five years of life. Through this analysis, we demonstrate that >80% of infectious events involve viral pathogens, but are accompanied by a shift in the NPM toward dominance by a small range of pathogenic bacterial genera. Unexpectedly, this change frequently precedes the detection of viral pathogens and acute symptoms. Colonization of illness-associated bacteria coupled with early allergic sensitization is associated with persistent wheeze in school-aged children, which is the hallmark of the asthma phenotype. In contrast, these bacterial genera are associated with "transient wheeze" that resolves after age 3 years in non-sensitized children. Thus, to complement early allergic sensitization, monitoring NPM composition may enable early detection and intervention in high-risk children.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Respiratory Tract Infections
/
Immunoglobulin E
/
Nasopharynx
/
Microbiota
Type of study:
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Risk_factors_studies
/
Screening_studies
Limits:
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Language:
En
Journal:
Cell Host Microbe
Journal subject:
MICROBIOLOGIA
Year:
2018
Document type:
Article