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Article

Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy

  • Authors:
    • Fengmei  Wang
    • Jian Xiao
    • Yaofeng Shen
    • Feng Yao
    • Yu Chen
  • View Affiliations / Copyright

    Affiliations: Department of Obstetrics and Gynaecology, Fuzhou General Hospital, Fuzhou, Fujian 350025, P.R. China, Department of Cardiothoracic Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai 200003, P.R. China, Department of Anesthesiology, Shanghai Chest Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200030, P.R. China, Department of Obstetrics and Gynaecology, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
  • Pages: 1509-1512
    |
    Published online on: July 7, 2014
       https://doi.org/10.3892/mmr.2014.2365
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Abstract

Autophagy has a significant role in myocardial injury induced by lipopolysaccharide (LPS). Estrogen (E2) has been demonstrated to protect cardiomyocytes against apoptosis; however, it remains to be determined whether it exhibits anti‑autophagic effects. The aim of the present study was to investigate whether estrogen-regulated autophagy attenuates cardiomyocyte injury induced by LPS. The cardiomyocytes of neonatal rats were randomized to the control (Con), LPS and estrogen + LPS groups. The LPS group was treated with 1 µg LPS for 24 h and the estrogen + LPS group was treated with 10‑8 M estrogen 30 min prior to treatment with LPS. Cardiomyocyte autophagy was quantitated by investigating the mRNA and protein level of autophagy‑related genes (Atgs). The mRNA expression of Atg5 and Beclin1 were measured by quantitative polymerase chain reaction and the microtubule‑associated protein light chain 3 (LC3) protein expression was measured by western blot analysis. To demonstrate the cardiomyocyte protection of estrogen, cell vitality and serum lactate dehydrogenase (LDH) levels were measured following LPS treatment. It was identified that LPS induced cardiomyocyte injury, together with the upregulation of Atg5, Beclin1 mRNA and LC3‑II protein. Furthermore, estrogen attenuated the effect of LPS. The present study provides evidence that estrogen has a myocardial protective role against injury induced by LPS by regulating autophagy.
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Copy and paste a formatted citation
Spandidos Publications style
Wang F, Xiao J, Shen Y, Yao F and Chen Y: Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy. Mol Med Rep 10: 1509-1512, 2014.
APA
Wang, F., Xiao, J., Shen, Y., Yao, F., & Chen, Y. (2014). Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy. Molecular Medicine Reports, 10, 1509-1512. https://doi.org/10.3892/mmr.2014.2365
MLA
Wang, F., Xiao, J., Shen, Y., Yao, F., Chen, Y."Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy". Molecular Medicine Reports 10.3 (2014): 1509-1512.
Chicago
Wang, F., Xiao, J., Shen, Y., Yao, F., Chen, Y."Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy". Molecular Medicine Reports 10, no. 3 (2014): 1509-1512. https://doi.org/10.3892/mmr.2014.2365
Copy and paste a formatted citation
x
Spandidos Publications style
Wang F, Xiao J, Shen Y, Yao F and Chen Y: Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy. Mol Med Rep 10: 1509-1512, 2014.
APA
Wang, F., Xiao, J., Shen, Y., Yao, F., & Chen, Y. (2014). Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy. Molecular Medicine Reports, 10, 1509-1512. https://doi.org/10.3892/mmr.2014.2365
MLA
Wang, F., Xiao, J., Shen, Y., Yao, F., Chen, Y."Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy". Molecular Medicine Reports 10.3 (2014): 1509-1512.
Chicago
Wang, F., Xiao, J., Shen, Y., Yao, F., Chen, Y."Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy". Molecular Medicine Reports 10, no. 3 (2014): 1509-1512. https://doi.org/10.3892/mmr.2014.2365
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