How EPA (Icosapent Ethyl) May Help the Heart Heal After a Heart Attack
This laboratory study used mice to explore how icosapent ethyl, a concentrated form of the omega-3 fatty acid EPA, affects heart repair after a heart attack. Researchers found that EPA activated a receptor called GPR120 on immune cells, which helped preserve heart pumping function, reduce scarring, and maintain small blood vessels in the heart muscle after injury.
The researchers discovered that EPA’s beneficial effects depended on GPR120 being present on immune cells known as myeloid cells. When this receptor was missing in these cells, the protective effects of EPA were greatly reduced. Mechanistically, EPA appeared to calm inflammation by lowering a signal called CXCL10, which normally attracts inflammatory immune cells (marked by a receptor called CXCR3) into the injured heart tissue.
When researchers blocked CXCR3 directly, they were able to restore some of the heart-protective effects even in mice lacking GPR120, supporting the idea that this immune signaling pathway is central to how EPA supports heart tissue recovery after injury.
What this means for you
This animal research helps explain one possible biological pathway—reducing harmful immune cell activity—by which EPA-based omega-3s might support heart tissue health after a cardiac injury. It’s an early-stage mechanistic study in mice, not a human clinical trial, so it shouldn’t be used to draw conclusions about treating or preventing heart attacks in people.
Ready to start? The ALP Protocol delivers the EPA & DHA doses used in the research.
Start the ALP ProtocolSource
Journal of molecular and cellular cardiology · 2026-08-21 · DOI: 10.1016/j.yjmcc.2026.08.010
Read the original source ↗This summary is for educational purposes only and is not medical advice. Always talk to your healthcare provider before making changes to your supplement routine.