Dual Roles of Free Fatty Acids in Gout Pathogenesis: Inflammatory Drivers and Metabolic Mediators

Area of Science:

• Rheumatology
• Metabolic Medicine
• Immunology

Background:

• Gout is a crystal-induced arthropathy driven by monosodium urate (MSU) crystals.
• Free fatty acids (FFAs) are increasingly recognized as key co-modulators in gout pathogenesis.
• Understanding FFAs' dual role is crucial for managing gout and its comorbidities.

Purpose of the Study:

• To systematically review the pro-inflammatory and metabolic roles of FFAs in gout.
• To elucidate molecular mechanisms of FFA-induced inflammation, including NLRP3 inflammasome activation.
• To explore FFA-associated metabolic disturbances and potential therapeutic strategies.

Main Methods:

• Systematic literature review focusing on FFAs in gout pathophysiology.
• Analysis of molecular pathways involving saturated, n-6 PUFA, short-chain fatty acid, and n-3 PUFA.
• Examination of FFA-mediated comorbidities such as insulin resistance and NAFLD.

Main Results:

• Saturated and n-6 PUFAs promote NLRP3 inflammasome activation, leading to cytokine storms and gout flares.
• Short-chain fatty acids and n-3 PUFAs exhibit anti-inflammatory effects, protecting against flares.
• FFAs contribute to metabolic issues including insulin resistance, renal fibrosis, and non-alcoholic fatty liver disease.

Conclusions:

• FFAs have a complex, dual role in gout, acting as both pro-inflammatory agents and metabolic modulators.
• Targeted therapies like lipid modulation, microbiome interventions, and dietary PUFA adjustments show promise for gout management.
• Further research into FFA pathways can lead to novel adjuvant treatments for gout and its associated conditions.