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The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats

  • Authors:
    • Zhaoqi Huang
    • Wei Xu
    • Jinlei Wu
    • Shengqiang Chen
    • Ximing Chen
  • View Affiliations / Copyright

    Affiliations: Department of Cardiovascular Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China, Department of Cardiovascular Medicine, Huadu District People's Hospital of Guangzhou, Guangzhou, Guangdong 510000, P.R. China, Department of Cardiovascular Medicine, Hexian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China, Institute for Neurological Research, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, P.R. China
    Copyright: © Huang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 5161-5165
    |
    Published online on: October 2, 2018
       https://doi.org/10.3892/etm.2018.6822
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Abstract

The possible role of phosphoinositide 3-kinase (PI3-K)/protein kinase B (Akt) signal pathway in the antagonist effect of carbamylated erythropoietin (CEPO) on chronic heart failure (CHF) in rats was investigated. Twenty of 120 rats were randomly selected as the control group, and the remaining rats as the model group. Rats in the model group received intraperitoneal injection of isoproterenol, those in the control group underwent intraperitoneal injection of equivalent normal saline. Rats with successful model establishment were divided into 4 groups, i.e. CHF group, CEPO group, LY294002 (LY) group and CEPO + LY group. Rats in the CEPO group underwent intraperitoneal injection of CEPO, while those in the CHF group received intraperitoneal injection of equivalent normal saline at the same time, those in the LY group received intraperitoneal injection of LY after model establishment, and those in the CEPO + LY group received the combined intraperitoneal injection of CEPO and LY simultaneously. Indicators for hemodynamics were determined using BL-410S bio-functional experiment system, including heart rate (HR), left ventricular end-diastolic pressure (LVEDP), left ventricular systolic pressure (LVSP) and maximal increased rate of left ventricular pressure (LVP)/maximal reduced rate of LVP (±dp/dtmax). Western blotting assay was utilized to determine the changes in activity of PI3-K/Akt signal pathway. LVSP and ±dp/dtmax in the CHF, the CEPO, the CEPO + LY and the LY groups were significantly lower than those in the control group (P<0.05); LVSP and ±dp/dtmax in the CEPO group were also elevated significantly compared with CHF, LY and CEPO + LY groups (P<0.05) with significant decreases in LVEDP and HR (P<0.05); compared with the CHF group, LVSP and ±dp/dtmax in the LY group were each significantly decreased (P<0.05) , in the LY group, pAkt level was significantly lower than that in the CHF group (P<0.05). In conclusion, CEPO can generate the antagonist effect on CHF in rats through activation of PI3-K/Akt signal pathway.
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Copy and paste a formatted citation
Spandidos Publications style
Huang Z, Xu W, Wu J, Chen S and Chen X: The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats. Exp Ther Med 16: 5161-5165, 2018.
APA
Huang, Z., Xu, W., Wu, J., Chen, S., & Chen, X. (2018). The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats. Experimental and Therapeutic Medicine, 16, 5161-5165. https://doi.org/10.3892/etm.2018.6822
MLA
Huang, Z., Xu, W., Wu, J., Chen, S., Chen, X."The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats". Experimental and Therapeutic Medicine 16.6 (2018): 5161-5165.
Chicago
Huang, Z., Xu, W., Wu, J., Chen, S., Chen, X."The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats". Experimental and Therapeutic Medicine 16, no. 6 (2018): 5161-5165. https://doi.org/10.3892/etm.2018.6822
Copy and paste a formatted citation
x
Spandidos Publications style
Huang Z, Xu W, Wu J, Chen S and Chen X: The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats. Exp Ther Med 16: 5161-5165, 2018.
APA
Huang, Z., Xu, W., Wu, J., Chen, S., & Chen, X. (2018). The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats. Experimental and Therapeutic Medicine, 16, 5161-5165. https://doi.org/10.3892/etm.2018.6822
MLA
Huang, Z., Xu, W., Wu, J., Chen, S., Chen, X."The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats". Experimental and Therapeutic Medicine 16.6 (2018): 5161-5165.
Chicago
Huang, Z., Xu, W., Wu, J., Chen, S., Chen, X."The role of PI3-K/Akt signal pathway in the antagonist effect of CEPO on CHF rats". Experimental and Therapeutic Medicine 16, no. 6 (2018): 5161-5165. https://doi.org/10.3892/etm.2018.6822
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