Microdialysis Workflow for Metabotyping Superficial Pathologies: Application to Burn Injury

Area of Science:

• Biochemistry
• Trauma Research
• Metabolomics

Background:

• Burn injuries present complex challenges due to local and systemic pathological processes.
• Understanding the local signaling environment in burn injuries is limited by current sampling methods.
• Existing techniques often sacrifice temporal data or site specificity.

Purpose of the Study:

• To develop and validate a novel approach for analyzing the dynamic interstitial metabolome at the burn site.
• To elucidate the molecular basis of burn injury pathology through continuous, localized sampling.
• To identify key metabolites involved in burn injury pathogenesis.

Main Methods:

• Subcutaneous microdialysis was employed for continuous, localized sample collection from burn sites.
• Ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) enabled high-throughput metabolomic profiling.
• The integrated approach allowed for temporal analysis of interstitial metabolites.

Main Results:

• The workflow successfully identified numerous metabolites altered by burn injury.
• Niacinamide and uric acid were structurally elucidated, with potential roles in burn pathology.
• Demonstrated the feasibility of high-yield metabolomic profiling from dynamic interstitial environments.

Conclusions:

• The coupled microdialysis-UPLC-MS technique provides unprecedented insight into burn injury's local metabolic dynamics.
• Identified metabolites offer potential targets for future therapeutic interventions.
• This methodology is broadly applicable to studying other dynamic pathologies.