We explored the effect of eicosapentaenoic acid (EPA), a type of omega-3 fatty acid, on systemic lupus erythematosus (SLE), a complex autoimmune disease that causes widespread inflammation in the body. In a carefully designed study using a mouse model of SLE, we discovered that dietary supplementation with EPA-rich fish oil significantly improved various autoimmune symptoms.
Our findings revealed that, after treatment, the mice showed reductions in fluid accumulation, abnormal tissue growth, and levels of certain autoantibodies in their blood. Notably, EPA also led to improvements in kidney health, evidenced by reduced protein levels in urine and decreased inflammation in kidney tissues.
Delving into the mechanisms, we found that EPA influenced how immune cells, particularly B cells, develop. It helped in reducing the overall number of B cells, which are often overactive in autoimmune diseases. Furthermore, EPA encouraged the production of an anti-inflammatory cytokine called IL-10. This is significant because IL-10 plays a crucial role in controlling immune responses and curbing inflammation.
Overall, our research suggests that integrating omega-3 fatty acids like EPA into diets could serve as a promising approach to managing autoimmune conditions, such as SLE. By balancing the intake of omega-3 and omega-6 fatty acids, we may better control the onset and severity of this challenging disease.