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Published on: August 7, 2017
Determinants in early life for asthma development
1Department of Pediatrics, National University Singapore, Singapore, 119260, Singapore. paevbhps@nus.edu.sg
Insights
No reliable newborn screening test for bronchial asthma (BA) exists due to its complexity. Key risk factors include family history, smoking exposure, prematurity, and early allergic signs, known as the Allergic March.
Area of Science:
- Pediatrics
- Allergology
- Respiratory Medicine
Background:
- Bronchial asthma (BA) is a complex respiratory condition with varied underlying mechanisms.
- A definitive screening test for predicting BA development in newborns is currently unavailable.
- Numerous risk factors contribute to BA, including genetic predisposition and environmental exposures.
Purpose of the Study:
- To review identified risk factors for bronchial asthma (BA) in newborns.
- To highlight the significance of early allergy markers and family history in BA prediction.
- To underscore the need for improved newborn screening methods for BA.
Main Methods:
- Literature review of studies identifying risk factors for bronchial asthma (BA).
- Analysis of established risk factors such as family history, environmental exposures, and prematurity.
- Examination of early indicators of allergic disease (the Allergic March).
Main Results:
- Identified risk factors include positive family history of BA, passive smoking, prematurity, and early viral infections like RSV-bronchiolitis.
- An atopic constitution is a major risk factor for persistent BA.
- Early symptoms and markers of allergy, alongside a positive family history for allergies, are significant predictors.
Conclusions:
- The complexity of BA hinders the development of a universal screening test.
- Recognizing the 'Allergic March' and family history of allergies is crucial for identifying at-risk infants.
- Further research is needed to develop reliable screening tools for early BA detection.
Abstract:
A reliable screening test in newborns for the subsequent development of bronchial asthma (BA) has not been found yet. This is mainly due to the complexity of BA, being made up by different types and underlying mechanisms. In different studies, a number of risk factors for BA have been identified. These include a positive family history of BA, passive smoking (also during pregnancy), prematurity (including pulmonary infections, RDS and BPD), early viral respiratory infections (such as RSV-bronchiolitis), male gender, early lung function abnormalities and atopic constitution. The major risk factor for persistent BA is an underlying allergic constitution. Therefore, early symptoms and markers of allergy (i.e. The Allergic March) and a positive family history for allergy should be considered as important risk factors for the development of BA.
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