Asthma, Author Interviews, Lancet, Pediatrics / 20.05.2014
Antibiotics In Infancy and Childhood Asthma, Viral Infections
MedicalResearch.com Interview with:
Adnan Custovic DM MD PhD FRCP
Professor of Allergy
Institute of Inflammation and Repair
University of Manchester
University Hospital of South Manchester
Manchester M23 9LT, UK
MedicalResearch: What are the main findings of the study?
Dr. Custovic: In a longitudinal analysis of the data from our birth cohort study collected from birth to age eleven years, we demonstrated an association between early-life antibiotic prescription and development of wheezing, but not atopy. Furthermore, amongst children with wheezing, antibiotic prescription in infancy increases the risk of subsequent severe wheeze/asthma exacerbations and hospital admissions. This is the first demonstration that children who receive antibiotics in infancy have impaired antiviral immunity later in life, and that early-life antibiotic prescription is associated with variants on chromosome 17q21 locus (which is an asthma susceptibility locus).
Our findings suggest that the association between antibiotics and childhood asthma reported in previous studies arises through a complex confounding by indication, in which hidden factors which increase the likelihood of both antibiotic prescription in early life and subsequent asthma development are increased susceptibility to virus infections consequent to impaired antiviral immunity, and genetic variants on 17q21. Our results raises an important issue that effects which are often attributed to environmental exposures may be a reflection of genetic predisposition.
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