Differential Regulation of Inflammatory and Pro-Resolving Lipid Mediators in Chronic Coronary Syndrome Across...

Area of Science:

• Cardiovascular Medicine
• Inflammation Biology
• Lipid Mediator Biology

Background:

• Chronic coronary syndrome (CCS) involves persistent vascular inflammation and impaired inflammatory resolution.
• Specialized pro-resolving mediators (SPMs), such as resolvins and maresins, are crucial for resolving inflammation and restoring tissue homeostasis.
• Understanding lipid mediator profiles in CCS is essential for elucidating disease mechanisms.

Purpose of the Study:

• To investigate the associations between serum concentrations of specific lipid mediators and clinical characteristics in patients with CCS.
• To determine if lipid mediator profiles differ based on sex, age, and body mass index (BMI) in CCS patients.

Main Methods:

• Prospective observational study of 83 patients hospitalized for stable angina or angina-equivalent symptoms.
• Serum concentrations of leukotriene B4 (LTB4), maresin-1 (MaR1), resolvin E1 (RvE1), resolvin D1 (RvD1), and prostaglandin E2 (PGE2) were measured using ELISA.
• Nonparametric statistical tests with false-discovery-rate correction were used for association analyses.

Main Results:

• Higher concentrations of LTB4, MaR1, and RvD1 were observed in women, older patients (≥65 years), and those with obesity (BMI ≥ 30 kg/m²).
• Higher RvE1 concentrations were found in men, younger patients, and individuals with BMI < 30 kg/m².
• Age, LTB4, and RvD1 were identified as independent predictors of coronary artery disease.

Conclusions:

• Circulating lipid mediator profiles in CCS patients exhibit significant differences based on sex, age, and obesity status.
• These distinct profiles suggest potential variations in inflammatory resolution pathways within the vascular wall.
• Further research is needed to determine if these observed profiles represent adaptive or impaired inflammatory resolution in CCS.