Urine metabolic profiles in paediatric asthma

Area of Science:

• Metabolomics
• Paediatric Medicine
• Biomarker Discovery

Background:

• Asthma is a significant global health concern, particularly in children.
• Understanding the complex pathophysiology of paediatric asthma is crucial for effective management.
• Metabolomic profiling offers a promising approach to identify disease-specific biomarkers.

Purpose of the Study:

• To explore candidate biomarkers for paediatric asthma using metabolomic profiling.
• To gain insights into the underlying pathophysiology of asthma in children.
• To differentiate between controlled and uncontrolled asthma based on metabolic profiles.

Main Methods:

• Urine samples from children aged 6-11 years were analyzed using gas chromatography-mass spectrometry.
• Participants were categorized into healthy control, uncontrolled asthma, and controlled asthma groups.
• Network-biology approaches were used to link identified metabolites with asthma-related genes.

Main Results:

• Fifty-one differential metabolites were identified, primarily linked to amino acid, carbohydrate, and purine metabolism.
• A panel of eight metabolites (uric acid, stearic acid, threitol, acetylgalactosamine, heptadecanoic acid, aspartic acid, xanthosine, hypoxanthine) demonstrated high accuracy in classifying asthma status and severity (AUC > 0.97).
• Enrichment analysis implicated Fc receptor signaling, steroid hormone receptor pathways, DNA damage, and fibroblast proliferation in paediatric asthma pathogenesis.

Conclusions:

• Metabolomic analysis of urine samples effectively discriminates asthma profiles and subtypes in children.
• The identified metabolic patterns provide valuable insights into the potential mechanisms of paediatric asthma.
• This study highlights the utility of metabolomics in understanding and potentially managing paediatric asthma.