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Strontium ions protect hearts against myocardial ischemia/reperfusion injury.


ABSTRACT: Timely restoration of blood supply following myocardial infarction is critical to save the infarcted myocardium, while reperfusion would cause additional damage. Strontium ions have been shown to promote angiogenesis, but it is unknown whether they can save the damaged myocardium. We report that myocardial ischemia/reperfusion (I/R)-induced functional deterioration and scar formation were notably attenuated by injection of strontium ion-containing composite hydrogels into murine infarcted myocardium at 20 minutes of reperfusion following 60 minutes of ischemia. These beneficial effects were accompanied by reduced cardiomyocyte apoptosis and increased angiogenesis. The effects of strontium ions were further confirmed by the enhanced viability of cardiomyocytes and stimulated angiogenesis in vitro. These findings are the first to reveal the cardioprotective effects of strontium ions against I/R injury, which may provide a new therapeutic approach to ischemic heart disease at a lower cost, with higher stability, and with potentially greater safety.

SUBMITTER: Xing M 

PROVIDER: S-EPMC7810382 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Strontium ions protect hearts against myocardial ischemia/reperfusion injury.

Xing Min M   Jiang Yun Y   Bi Wei W   Gao Long L   Zhou Yan-Ling YL   Rao Sen-Le SL   Ma Ling-Ling LL   Zhang Zhao-Wenbin ZW   Yang Huang-Tian HT   Chang Jiang J  

Science advances 20210115 3


Timely restoration of blood supply following myocardial infarction is critical to save the infarcted myocardium, while reperfusion would cause additional damage. Strontium ions have been shown to promote angiogenesis, but it is unknown whether they can save the damaged myocardium. We report that myocardial ischemia/reperfusion (I/R)-induced functional deterioration and scar formation were notably attenuated by injection of strontium ion-containing composite hydrogels into murine infarcted myocar  ...[more]

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