Open Access

Relaxin ameliorates high glucose‑induced cardiomyocyte hypertrophy and apoptosis via the Notch1 pathway

  • Authors:
    • Xiao Wei
    • Yuan Yang
    • Yin‑Jiu Jiang
    • Jian‑Ming Lei
    • Jing‑Wen Guo
    • Hua Xiao
  • View Affiliations

  • Published online on: November 6, 2017     https://doi.org/10.3892/etm.2017.5448
  • Pages:691-698
  • Copyright: © Wei et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study aimed to investigate the role of relaxin (RLX) on high glucose (HG)‑induced cardiomyocyte hypertrophy and apoptosis, as well as the possible molecular mechanism. H9c2 cells were exposed to 33 mmol/l HG with or without RLX (100 nmol/ml). Cell viability, apoptosis, oxidative stress, cell hypertrophy and the levels of Notch1, hairy and enhancer of split 1 (hes1), atrial natriuretic polypeptide (ANP), brain natriuretic peptide (BNP), manganese superoxide dismutase (MnSOD), cytochrome C and caspase‑3 were assessed in cardiomyocytes. Compared with the HG group, the viability of H9c2 cells was increased by RLX in a time‑ and dose‑dependent manner, and was accompanied with a significant reduction in apoptosis. Furthermore, RLX significantly suppressed the formation of reactive oxygen species and malondialdehyde, and enhanced the activity of SOD. In addition, the levels of ANP, BNP, cytochrome C and caspase‑3 were increased and Notch1, hes1 and MnSOD were inhibited in the HG group compared with those in the normal group. However, the Notch inhibitor DAPT almost abolished the protective effects of RLX. These results suggested that RLX protected cardiomyocytes from HG‑induced hypertrophy and apoptosis partly through a Notch1‑dependent pathway, which may be associated with reducing oxidative stress.

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January 2018
Volume 15 Issue 1

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

2016 Impact Factor: 1.261
Ranked #50/128 Medicine Research and Experimental
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APA
Wei, X., Yang, Y., Jiang, Y., Lei, J., Guo, J., & Xiao, H. (2018). Relaxin ameliorates high glucose‑induced cardiomyocyte hypertrophy and apoptosis via the Notch1 pathway. Experimental and Therapeutic Medicine, 15, 691-698. https://doi.org/10.3892/etm.2017.5448
MLA
Wei, X., Yang, Y., Jiang, Y., Lei, J., Guo, J., Xiao, H."Relaxin ameliorates high glucose‑induced cardiomyocyte hypertrophy and apoptosis via the Notch1 pathway". Experimental and Therapeutic Medicine 15.1 (2018): 691-698.
Chicago
Wei, X., Yang, Y., Jiang, Y., Lei, J., Guo, J., Xiao, H."Relaxin ameliorates high glucose‑induced cardiomyocyte hypertrophy and apoptosis via the Notch1 pathway". Experimental and Therapeutic Medicine 15, no. 1 (2018): 691-698. https://doi.org/10.3892/etm.2017.5448