MIT engineers have designed a programmable drug-delivery patch that could help the heart heal after a heart attack. The flexible hydrogel patch, applied directly to the heart, releases three drugs in sequence over two weeks: one prevents cell death, another spurs blood vessel growth and a third blocks scarring. The approach mimics the body’s own healing timeline, restoring heart function far more effectively than traditional treatments. https://news.mit.edu/2025/new-patch-could-help-heal-heart-1104?utm_source=substack&utm_medium=email
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