Weight-loss injections have become some of the most talked-about medicines in recent years.
Many people recognize the names from headlines about diabetes treatment and dramatic weight loss.
But scientists are now uncovering a possible benefit that has little to do with the number on the scale. The same medications may also help the heart recover after a heart attack.
A new discovery
Researchers from the University of Bristol and University College London have been studying a group of drugs known as GLP-1 medications. These include treatments widely used for obesity and type 2 diabetes.
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Their findings, published in the journal Nature Communications, suggest the drugs may improve blood circulation inside the heart after a heart attack.
Even when doctors quickly reopen a blocked artery during emergency treatment, problems can remain.
The smallest blood vessels in the heart sometimes stay narrowed, preventing oxygen-rich blood from reaching damaged tissue.
The tiny vessels
The research team focused on small cells called pericytes. These cells surround the heart’s smallest capillaries and control how wide the vessels are.
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During a heart attack, a lack of oxygen can cause these cells to tighten. When that happens, the tiny vessels constrict and blood struggles to flow through the heart muscle.
Experiments showed that GLP-1 drugs appear to relax these cells. The medications activate potassium channels that help the vessels open again, allowing circulation to improve.
Why it matters
Better blood flow in these microvessels could help limit damage after a heart attack and support the heart’s recovery.
Researchers say the findings are particularly promising because these medications are already widely used around the world.
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Possible benefits highlighted by the study include:
- improved circulation in damaged heart tissue
- reduced risk of complications after a heart attack
- better long-term recovery for patients
Further studies involving human patients will be needed before doctors can confirm whether the same effects appear in clinical treatment.
Sources: Science Daily and Nature
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