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[Development of atopic disease in early childhood--predisposing factors]
Insights
Infants with high cord blood IgE or family history are more prone to atopy. Combined factors like parental smoking and reduced cord blood CD8 cells significantly increase atopic disease risk in children.
Area of Science:
- Pediatrics
- Immunology
- Allergy Research
Context:
- Atopic diseases, such as eczema and asthma, are common in early childhood.
- Identifying early predictors of atopy is crucial for timely intervention.
- This study investigates risk factors in a cohort of 200 newborns followed to age 3.
Purpose:
- To identify prenatal and early-life factors that predispose infants to developing atopic diseases.
- To examine the combined effects of environmental and immunological markers on atopy development.
Summary:
- Elevated cord blood immunoglobulin E (IgE) and a positive family history of atopy were significantly associated with increased atopic disease incidence.
- Neither parental smoking nor formula feeding alone predicted atopy.
- However, the combination of parental smoking or formula feeding with reduced cord blood CD8 or CD3 T-cells significantly increased the likelihood of atopy.
Impact:
- Suggests that seemingly minor risk factors can synergistically increase atopy risk when combined.
- Highlights the importance of considering multiple interacting factors in predicting childhood atopy.
- Provides insights into potential targets for early prevention strategies in at-risk infants.
Abstract:
In this study, we attempted to find factors which predispose infants to atopy. 200 unselected newborns were followed up to 3 years of age. Children with elevated cordblood IgE or positive family history developed atopic disease significantly more frequent (p less than 0.05, p less than 0.01). Parental smoking or formula feeding alone did not influence the frequency of subsequent atopic disorders. However, in combination with reduced cordblood CD8-cells atopy was observed significantly more often (p less than 0.05, p less than 0.025). Similar results were found in children with reduced cordblood CD3-cells, whose parents were smokers (p less than 0.01). These results suggest that factors which alone do not influence atopy can enhance each other to predispose atopic disease in early childhood.