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Article

Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury

  • Authors:
    • Yong Zhao
    • Yan Xu
    • Jianhua Zhang
    • Tingting Ji
  • View Affiliations / Copyright

    Affiliations: Department of Emergency, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China, Department of Cardiovascular Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
  • Pages: 1092-1096
    |
    Published online on: July 24, 2014
       https://doi.org/10.3892/etm.2014.1863
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Abstract

Carvedilol is a non‑selective β‑blocker used in the treatment of cardiovascular disease, including myocardial ischemia. The aim of the present study was to investigate the molecular mechanisms underlying the effects of carvedilol on simulated ischemia/reperfusion (SI/R)‑induced cardiomyocyte apoptosis in vitro. H9c2 cardiomyocytes were incubated with either a vehicle or an ischemic buffer during hypoxia followed by reoxygenation with or without carvedilol. In two additional groups, toll‑like receptor 4 (TLR4) and nuclear factor κ-light-chain-enhancer of activated B cells (NF‑κB) were inhibited by a TLR4 antibody and pyrrolidine dithiocarbamate, respectively. The results revealed that carvedilol markedly decreased SI/R‑induced apoptosis in a concentration‑dependent manner, as demonstrated by flow‑cytometric analysis. This effect was shown to be associated with an increase in the B-cell lymphoma 2 (Bcl‑2)/Bcl-2-associated X (Bax) protein ratio and concurrent reductions in the expression levels of TLR4 and NF‑κB. These results suggest that carvedilol provides significant cardioprotection against SI/R‑induced injury in H9c2 cardiomyocytes, an effect likely to be mediated through the TLR4/NF‑κB signaling pathway.
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Copy and paste a formatted citation
Spandidos Publications style
Zhao Y, Xu Y, Zhang J and Ji T: Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury. Exp Ther Med 8: 1092-1096, 2014.
APA
Zhao, Y., Xu, Y., Zhang, J., & Ji, T. (2014). Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury. Experimental and Therapeutic Medicine, 8, 1092-1096. https://doi.org/10.3892/etm.2014.1863
MLA
Zhao, Y., Xu, Y., Zhang, J., Ji, T."Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury". Experimental and Therapeutic Medicine 8.4 (2014): 1092-1096.
Chicago
Zhao, Y., Xu, Y., Zhang, J., Ji, T."Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury". Experimental and Therapeutic Medicine 8, no. 4 (2014): 1092-1096. https://doi.org/10.3892/etm.2014.1863
Copy and paste a formatted citation
x
Spandidos Publications style
Zhao Y, Xu Y, Zhang J and Ji T: Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury. Exp Ther Med 8: 1092-1096, 2014.
APA
Zhao, Y., Xu, Y., Zhang, J., & Ji, T. (2014). Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury. Experimental and Therapeutic Medicine, 8, 1092-1096. https://doi.org/10.3892/etm.2014.1863
MLA
Zhao, Y., Xu, Y., Zhang, J., Ji, T."Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury". Experimental and Therapeutic Medicine 8.4 (2014): 1092-1096.
Chicago
Zhao, Y., Xu, Y., Zhang, J., Ji, T."Cardioprotective effect of carvedilol: inhibition of apoptosis in H9c2 cardiomyocytes via the TLR4/NF‑κB pathway following ischemia/reperfusion injury". Experimental and Therapeutic Medicine 8, no. 4 (2014): 1092-1096. https://doi.org/10.3892/etm.2014.1863
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