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Urinary bisphenol A concentrations in relation to asthma in a sample of Egyptian children
M M Youssef1, Ems El-Din1, M M AbuShady1
11 Department of Child Health, National Research Centre (NRC), Cairo, Egypt.
Insights
Higher urinary bisphenol A (BPA) levels are linked to childhood asthma. This plastic chemical may be a significant risk factor for pediatric asthma development, even more so than passive smoking.
Area of Science:
- Environmental Health
- Pediatric Pulmonology
- Toxicology
Background:
- Childhood asthma is a major pediatric health concern.
- Limited research exists on the link between bisphenol A (BPA) and childhood asthma.
- BPA is a widely used plastic monomer with potential health implications.
Purpose of the Study:
- To compare urinary BPA levels in children with and without asthma.
- To investigate BPA's role as a risk factor for childhood asthma development.
- To assess BPA's significance relative to other asthma risk factors.
Main Methods:
- A case-control study involving 97 children (ages 3-8).
- Asthma diagnosis based on Global Initiative for Asthma (GINA) guidelines.
- Urinary BPA levels measured using high-performance liquid chromatography in spot urine samples.
Main Results:
- Asthmatic children had significantly higher median urinary BPA levels than controls (1.56 vs. 0.790 ng/mL).
- Children with urinary BPA levels >1.3 ng/mL were 2.84 times more likely to have asthma.
- Higher BPA levels were a more significant predictor of asthma than passive smoking.
Conclusions:
- Elevated urinary BPA levels are associated with childhood asthma diagnosis.
- BPA exposure may be a risk factor in the development of pediatric bronchial asthma.
- Further research is needed to elucidate the precise mechanisms linking BPA and asthma.
Background:
Bronchial asthma is one of the top disabling diseases in pediatrics. Limited research has been studied the association of the widely used plastic monomer bisphenol A (BPA) with childhood asthma.
Objective:
To compare the levels of urinary BPA in asthmatic and control children and to investigate the implication of BPA among other risk factors for the development of asthma.
Subjects And Methods:
This case-control study included 97 children (45 asthmatic and 52 healthy controls) aged 3-8 years. Asthmatic children were diagnosed according to Global initiative for asthma (GINA) guidelines. Sociodemographic factors were assessed and urinary levels of BPA were determined in spot urine samples using high-performance liquid chromatography. The contribution of BPA among predictors for developing asthma was studied in asthmatic children.
Results:
Median total urinary BPA levels were significantly higher in asthmatic children than in control group (1.56 ng/mL in asthmatic children compared to 0.790 ng/mL in control group, p = 0.001). Children who had total urinary BPA levels >1.3 ng/mL were more likely to be asthmatic (odds ratio: 2.84, 95% confidence interval 1.22-6.59, p = 0.015). Multiple logistic regression analysis for predictors of asthma showed the importance of higher levels of BPA (>1.3 ng/mL) as a more significant predictor than passive smoking ( p = 0.006 for BPA categories vs. p = 0.049 for passive smoking).
Conclusion:
Association of higher levels of urinary BPA with the diagnosis of asthma in children may indicate the potential risk of BPA exposure in the precipitation of bronchial asthma. Further clinical and biochemical research are needed to clarify the proper mechanism explaining this association.
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