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Interleukin-10 protects the ischemic heart from reperfusion injury via the STAT3 pathway. | LitMetric

AI Article Synopsis

Article Abstract

Background: Cardiac surgery induces the release of inflammatory mediators that can prolong cardiac dysfunction after operative intervention. Interleukin-10 (IL-10), a potent inhibitor of myocardial inflammation, is a known factor in myocardial protection after ischemia/reperfusion (I/R) injury. We hypothesized that IL-10 activity during initial reperfusion is mediated through the signal transducer and activator of transcription 3 (STAT3) pathway.

Methods: Adult rat hearts were isolated and perfused via Langendorff protocol and subjected to global I/R. After determining the effective IL-10 dose, hearts were administered vehicle, IL-10, or IL-10 + Stattic (specific STAT3 inhibitor) 1 min prior to ischemia. After reperfusion, hearts were sectioned and assessed for levels of myocardial inflammatory cytokines and protein.

Results: The IL-10 minimum effective dose was 1 μg. IL-10-treated hearts had improved markedly myocardial function after global I/R compared to both vehicle and IL-10 + Stattic groups. In addition, IL-10 treatment was associated with a significant decrease in myocardial interleukin-1β (IL-1β) and interleukin-6 (IL-6) and increase in myocardial IL-10. Myocardial STAT3 was elevated markedly in IL-10 treated hearts.

Conclusion: IL-10 improves myocardial function after acute global I/R and suppresses inflammation through the STAT3 pathway. The administration of anti-inflammatory agents may have potential therapeutic applications in cardiac surgery.

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Source
http://dx.doi.org/10.1016/j.surg.2011.05.017DOI Listing

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