Adropin reduces hypoxia/reoxygenation‑induced myocardial injury via the reperfusion injury salvage kinase pathway

  • Authors:
    • Lingzhen Wu
    • Jun Fang
    • Xun Yuan
    • Chang Xiong
    • Lianglong Chen
  • View Affiliations

  • Published online on: August 26, 2019     https://doi.org/10.3892/etm.2019.7937
  • Pages: 3307-3314
  • Copyright: © Wu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Adropin is a secreted polypeptide that has been demonstrated to serve an important role in protecting the vascular endothelium. Pharmacological activation of pro‑survival kinases, such as PI3K‑Akt and ERK1/2, are involved in the reperfusion injury salvage kinase (RISK) pathway. In the present study, the effects of adropin in cardiomyocyte injury induced by simulated ischemia/reperfusion (SI/R) were assessed. Additionally, the current study also assessed the mechanisms that govern SI/R in a H9c2 cardiomyoblast cell model. Cell viability was measured using an MTT assay. Cell injury was assessed using creatine kinase MB measurements. Apoptosis was assessed using flow cytometry and caspase‑3 activity. The inflammatory response was measured using tumor necrosis factor α and interleukin‑10 expression. Oxidative stress was assessed using malondialdehyde and superoxide dismutase. The expression levels of Akt, ERK1/2, glycogen synthase kinase 3β (GSK3β), Bcl‑2 and Bax were determined using western blot analysis. The results of the current study revealed that moderate‑dose adropin increased cell viability, reduced early apoptosis and caspase‑3 activity, promoted Bcl‑2 expression, inhibited Bax and increased the Bcl‑2/Bax ratio. Adropin significantly increased the phosphorylation of Akt, ERK1/2 and GSK3β, whereas inhibitors of PI3K and ERK1/2, respectively, LY294002 and PD98059, abolished the cardioprotective role of adropin. Furthermore, no significant difference was observed in phosphorylated‑STAT3/total‑STAT3 expression between the adropin and SI/R groups and Janus kinase 2 inhibitor AG490 did not significantly inhibit the protective role of adropin. These results indicate that adropin exerts a protective effect against SI/R injury through the RISK pathway instead of the survivor activating factor enhancement pathway.
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November-2019
Volume 18 Issue 5

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Wu L, Fang J, Yuan X, Xiong C and Chen L: Adropin reduces hypoxia/reoxygenation‑induced myocardial injury via the reperfusion injury salvage kinase pathway. Exp Ther Med 18: 3307-3314, 2019
APA
Wu, L., Fang, J., Yuan, X., Xiong, C., & Chen, L. (2019). Adropin reduces hypoxia/reoxygenation‑induced myocardial injury via the reperfusion injury salvage kinase pathway. Experimental and Therapeutic Medicine, 18, 3307-3314. https://doi.org/10.3892/etm.2019.7937
MLA
Wu, L., Fang, J., Yuan, X., Xiong, C., Chen, L."Adropin reduces hypoxia/reoxygenation‑induced myocardial injury via the reperfusion injury salvage kinase pathway". Experimental and Therapeutic Medicine 18.5 (2019): 3307-3314.
Chicago
Wu, L., Fang, J., Yuan, X., Xiong, C., Chen, L."Adropin reduces hypoxia/reoxygenation‑induced myocardial injury via the reperfusion injury salvage kinase pathway". Experimental and Therapeutic Medicine 18, no. 5 (2019): 3307-3314. https://doi.org/10.3892/etm.2019.7937