Scientists Uncover Brain-Heart Connection in Heart Attacks

UCSD researchers find disabling specific brain circuits could improve outcomes for heart attack patients

Jan. 27, 2026 at 2:07pm

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Scientists at the University of California San Diego have discovered a pathway between the brain and the immune system that could lead to new treatments for heart attacks. They found that disabling specific neurons in the brain that connect to the heart can significantly improve outcomes in mice with experimentally induced heart attacks, suggesting this brain-heart-immune circuit plays a key role in the damage caused by heart attacks.

Why it matters

This research highlights the important connections between the nervous system, immune system, and cardiovascular health. By understanding how the brain communicates with the heart during a heart attack, scientists may be able to develop new therapies that target this brain-heart-immune axis to reduce inflammation and improve recovery. This could have major implications for the millions of people who suffer heart attacks each year.

The details

The UCSD team, led by neuroscientist Vineet Augustine, found that during a heart attack in mice, certain neurons in the brain's vagus nerve (TRPV1 expressing neurons) "literally wrap around the injury site." By blocking communication through these nerve cells, the researchers were able to significantly improve heart function and electrical signaling in the heart. They traced this pathway from the heart to the hypothalamus in the brain, and then to another set of neurons that project back to the heart and trigger an inflammatory immune response. Blocking any of these three junctures in the circuit relieved heart attack complications in the mice.

  • The research was published on January 27, 2026 in the journal Cell.

The players

Vineet Augustine

A neuroscientist at the University of California San Diego who led the new study.

Saurabh Yadav

A postdoctoral researcher in Augustine's lab and one of the first authors on the paper.

Cameron McAlpine

A neuroimmunologist at the Icahn School of Medicine at Mount Sinai who was not involved in the new research but commented on its significance.

Asya Rolls

A neuroimmunologist at Tel Aviv University in Israel who has also studied brain-immune connections in heart attacks.

Kalyanam Shivkumar

A cardiac electrophysiologist at UCLA who is leading an effort to create a new anatomical atlas of the heart.

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What they’re saying

“The injury almost disappears.”

— Vineet Augustine, Neuroscientist, University of California San Diego

“The findings in this paper are quite impressive.”

— Cameron McAlpine, Neuroimmunologist, Icahn School of Medicine at Mount Sinai

“The message people should get is, oh my God, these scientists are doing something very exciting. But literally we are building on ancient knowledge.”

— Kalyanam Shivkumar, Cardiac Electrophysiologist, UCLA

What’s next

The UCSD team plans to further investigate the specific signals the brain neurons are sensing and how they communicate with the heart cells. They also hope to explore whether the approved vagus nerve stimulator could prove useful for treating heart attacks after additional study.

The takeaway

This research highlights the complex connections between the brain, immune system, and cardiovascular health, and suggests that targeting specific neural circuits could lead to new therapies to reduce the devastating impacts of heart attacks. The findings build on a growing body of evidence demonstrating the profound influence the nervous system has on the body's immune response and overall health.