Serum ¹H-NMR Metabolomic Profiling of Full-Thickness Rotator Cuff Tears: A Hypothesis-Generating Case-Control Pilot...

Area of Science:

• Biochemistry
• Metabolomics
• Orthopedics

Background:

• Rotator cuff (RC) tears cause significant shoulder pain and disability.
• Current diagnosis relies on imaging like MRI, but systemic metabolic indicators are unclear.
• Identifying blood-based biomarkers could aid in diagnosing RC injuries.

Purpose of the Study:

• To investigate differences in serum metabolites between individuals with full-thickness RC tears and healthy controls.
• To explore potential systemic metabolic signatures associated with RC tears.
• To generate hypotheses for future biomarker development.

Main Methods:

• A case-control study involving 50 individuals with RC tears and 50 healthy controls.
• Serum metabolite analysis using proton nuclear magnetic resonance (¹H-NMR).
• Statistical analysis to identify metabolite differences and pathway enrichment, controlling for false discoveries.

Main Results:

• Significant variations in numerous metabolites were observed between groups.
• Elevated levels of N-carbamoyl-β-alanine, taurine, erythritol, and N-acetylaspartate in RC tears.
• Diminished levels of 3-methylhistidine and proline in RC tears, with pathway enrichment in pyrimidine and bile-acid metabolism, among others.

Conclusions:

• Preliminary findings suggest a coordinated systemic metabolic signature associated with full-thickness RC tears.
• This systems-level perspective offers new hypotheses regarding RC pathology, including tissue remodeling and energy metabolism.
• Further longitudinal studies are needed for validation and potential clinical translation.