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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. Exp Ther Med 2018; 16:5161-5165. [PMID: 30542471 PMCID: PMC6257438 DOI: 10.3892/etm.2018.6822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 09/11/2018] [Indexed: 12/17/2022] Open
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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Affiliation(s)
- Zhaoqi Huang
- Department of Cardiovascular Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Wei Xu
- Department of Cardiovascular Medicine, Huadu District People's Hospital of Guangzhou, Guangzhou, Guangdong 510000, P.R. China
| | - Jinlei Wu
- Department of Cardiovascular Medicine, Hexian Memorial Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Shengqiang Chen
- Institute for Neurological Research, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510260, P.R. China
| | - Ximing Chen
- Department of Cardiovascular Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
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Lehner S, Todica A, Brunner S, Uebleis C, Wang H, Wängler C, Herbach N, Herrler T, Böning G, Laubender RP, Cumming P, Schirrmacher R, Franz W, Hacker M. Temporal Changes in Phosphatidylserine Expression and Glucose Metabolism after Myocardial Infarction: An in Vivo Imaging Study in Mice. Mol Imaging 2012. [DOI: 10.2310/7290.2012.00010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Sebastian Lehner
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Andrei Todica
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Stefan Brunner
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Christopher Uebleis
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Hao Wang
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Carmen Wängler
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Nadja Herbach
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Tanja Herrler
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Guido Böning
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Rüdiger Paul Laubender
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Paul Cumming
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Ralf Schirrmacher
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Wolfgang Franz
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
| | - Marcus Hacker
- From the Departments of Nuclear Medicine, Cardiology, Experimental Surgery, Institute of Veterinary Pathology, Institute of Medical Informatics, Biometry and Epidemiology, University of Munich, Munich, Germany; McConnell Brain Imaging Centre, McGill University, Montreal, PQ
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12
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Kanashiro-Takeuchi RM, Takeuchi LM, Hatzistergos K, Quevedo H, Selem SM, Treuer AV, Premer C, Balkan W, Margitich I, Song Y, Hu Q, Hare JM. Effects of combination of proliferative agents and erythropoietin on left ventricular remodeling post-myocardial infarction. Clin Transl Sci 2011; 4:168-74. [PMID: 21707946 DOI: 10.1111/j.1752-8062.2011.00278.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
UNLABELLED Erythropoietin (EPO) has the potential to improve ischemic tissue by mobilizing endothelial progenitor cells and enhancing neovascularization. We hypothesized that combining EPO with human chorionic gonadotrophin (hCG) would improve post-myocardial infarction (MI) effects synergistically. METHODS After MI, five to seven animals were randomly assigned to each of the following treatments: control; hCG; EPO; hCG + EPO, and prolactin (PRL) + EPO. Follow-up echocardiograms were performed to assess cardiac structure and function. Apoptosis was determined by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) assay and western blot analysis for apoptosis-related proteins, and cell proliferation by immunostaining for Ki67 and c-kit cells. RESULTS The MI-mediated increased chamber systolic dimension (p < 0.05 in controls) was attenuated by hCG, EPO, and hCG + EPO (p < 0.05 vs. control) but not PRL + EPO. Similarly all treatment groups, except PRL + EPO, reduced MI-induced increases (p < 0.05 vs. control) in ejection fraction (EF). The functional improvement in the EPO-treated groups was accompanied by increased capillary density. Apoptosis was markedly reduced in all treated groups. Significantly more cardiac c-kit(+) cells were found in the hCG + EPO group. CONCLUSION Our findings revealed that EPO, hCG, or their combination ameliorate cardiac remodeling post-MI. Whereas EPO stimulates neovascularization only and hCG + EPO stimulates c-kit+ cell proliferation. These data suggest that combining mobilizing and proliferative agents adds to the durability and sustainability of cytokine-based therapies for remodeling post-MI.
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