A heart attack is a life-changing event that happens when blood flow to part of the heart is suddenly blocked. Modern treatments have helped many people survive their first heart attack, but survival is only the beginning of a long recovery.
Many patients are left with lasting heart damage that weakens the heart’s ability to pump blood. This damage can lead to heart failure, tiredness, breathlessness, and a shorter life. Doctors have long searched for ways to protect the heart after the attack itself is treated.
Australian scientists have now discovered that a medicine already used for another disease might help solve this problem.
Researchers at the Baker Heart and Diabetes Institute found that a drug called abatacept, which is used to treat rheumatoid arthritis, may greatly improve recovery after a heart attack. Their work suggests that controlling the body’s immune response could prevent further injury to the heart.
After a heart attack, the body launches an emergency response to repair the injured tissue. This response includes inflammation, which is the body’s way of dealing with damage. In the short term, inflammation can help healing.
However, too much inflammation can be harmful. In the heart, excessive inflammation can destroy healthy cells and leave behind scar tissue that cannot contract like normal heart muscle. This reduces the heart’s strength and increases the risk of heart failure.
The researchers focused on a specific part of the immune system involving cells called T cells. These cells normally help protect the body from infections and abnormal cells. They remember past threats and can react quickly when danger appears again.
But after a heart attack, T cells can become overactive. Instead of helping repair the heart, they can increase inflammation and worsen the damage.
Abatacept works by calming these T cells and preventing them from becoming too aggressive. In laboratory studies using mice, the drug reduced inflammation in the heart soon after a heart attack.
Within one week, the treated animals showed better heart function compared to those that did not receive the drug. Their hearts were able to pump blood more effectively, suggesting that the medicine protected the heart muscle from further harm.
This discovery is important because there are currently no widely used treatments that specifically target immune-driven inflammation after a heart attack.
Most therapies focus on restoring blood flow and managing risk factors such as cholesterol and blood pressure. While these treatments save lives, they do not fully address the ongoing damage caused by the immune response.
Heart attacks remain one of the leading causes of death and disability around the world. Even among survivors, many face long-term complications that affect daily life.
Studies show that about one quarter of patients die within three years of their first heart attack, and a significant number die within the first year. Reducing inflammation could therefore make a major difference in survival and quality of life.
One advantage of abatacept is that it is already approved for treating autoimmune diseases in many countries, including Australia. This means doctors are familiar with its safety and side effects, which could speed up the process of testing it in heart patients.
Researchers believe that giving the drug within the first few days after a heart attack, possibly as a single infusion, might be enough to prevent harmful immune activity.
However, the findings so far come from animal studies, so more research is needed before the treatment can be used in people. Human clinical trials will be necessary to confirm that the benefits seen in mice also occur in patients and that the drug is safe in this new context. Scientists will also need to determine the best timing and dosage.
In reviewing the study, it appears that targeting the immune system may represent a new direction in heart attack care. Instead of focusing only on blocked arteries, future treatments may aim to control the body’s response to injury.
This approach recognizes that healing depends not only on restoring blood flow but also on preventing further damage caused by inflammation.
The research offers hope that recovery from heart attacks could become more effective in the future. If the results are confirmed in humans, this treatment could reduce long-term complications and help survivors live healthier lives.
While it is still early, the study highlights the value of exploring existing medicines for new uses. Sometimes the key to a major medical breakthrough is already sitting on pharmacy shelves.
If you care about heart health, please read studies that yogurt may help lower the death risks in heart disease, and coconut sugar could help reduce artery stiffness.
For more information about health, please see recent studies that Vitamin D deficiency can increase heart disease risk, and results showing vitamin B6 linked to lower death risk in heart disease.
The study is published in Cardiovascular Research.
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