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  "path": "/health/a-single-injection-of-mrna-like-treatment-could-help-heart-muscle-heal-after-a-heart-attack-in-mice-and-pigs-could-it-work-in-humans-too",
  "publishedAt": "2026-03-16T15:29:11.000Z",
  "site": "https://www.livescience.com",
  "tags": [
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  "textContent": "Researchers boosted levels of a heart-healing hormone in mice and pigs with a single injection of a new, experimental form of self-amplifying RNA that prolonged hormone synthesis for many weeks.",
  "title": "A single injection of mRNA-like treatment could help heart muscle heal after a heart attack in mice and pigs. Could it work in humans too?",
  "updatedAt": "2026-03-16T15:29:12.000Z"
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