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Zhang S, Zhou Y, Zhao L, Tian X, Jia M, Gu X, Feng N, An R, Yang L, Zheng G, Li J, Guo H, Fan R, Pei J. κ-opioid receptor activation protects against myocardial ischemia-reperfusion injury via AMPK/Akt/eNOS signaling activation. Eur J Pharmacol 2018; 833:100-108. [PMID: 29856969 DOI: 10.1016/j.ejphar.2018.05.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 11/20/2022]
Abstract
This study aims to investigate the effect of κ-opioid receptor activation on myocardial ischemia and reperfusion(I/R) injury and elucidate the underlying mechanisms. Myocardial I/R rat model and simulated I/R cardiomyocytes model were established. In vivo study showed that U50,488 H improved cardiac function, reduced myocardial infarct size and serum cTnT significantly. The effect of U50,488 H was abolished by nor-BNI(a κ-opioid receptor antagonist), Compound C(an AMPK inhibitor), Akt inhibitor and L-NAME(an eNOS inhibitor). AICAR, an AMPK activator, mimicked the effect of U50,488 H. U50,488 H up-regulated p-AMPK, p-Akt, and p-eNOS, which were abolished by nor-BNI. AICAR increased p-Akt and p-eNOS, which was abolished by Compound C. In vitro study showed that U50,488 H increased p-AMPK, p-Akt, and p-eNOS via κ-OR activation. The effect of U50,488 H on p-AMPK was abolished by compound C, but not Akt inhibitor and L-NAME. The effect of U50,488 H on p-Akt was abolished by compound C and Akt inhibitor, but not L-NAME. AICAR increased p-Akt and p-eNOS, which was abolished by Akt inhibitor, but not L-NAME. U50,488 H and AICAR also increased the viability of cardiomyocytes subjected to simulated I/R, the effects of U50,488 H and AICAR were blocked by nor-BNI, Compound C, Akt inhibitor, and L-NAME, respectively. In conclusion, κ-OR activation confers cardioprotection via AMPK/Akt/eNOS signaling.
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MESH Headings
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/pharmacology
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/therapeutic use
- AMP-Activated Protein Kinases/antagonists & inhibitors
- AMP-Activated Protein Kinases/metabolism
- Aminoimidazole Carboxamide/analogs & derivatives
- Aminoimidazole Carboxamide/pharmacology
- Aminoimidazole Carboxamide/therapeutic use
- Animals
- Cell Line
- Cell Survival/drug effects
- Male
- Myocardial Reperfusion Injury/drug therapy
- Myocardial Reperfusion Injury/metabolism
- Myocardial Reperfusion Injury/physiopathology
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- NG-Nitroarginine Methyl Ester/pharmacology
- Naltrexone/analogs & derivatives
- Naltrexone/pharmacology
- Nitric Oxide Synthase Type III/antagonists & inhibitors
- Nitric Oxide Synthase Type III/metabolism
- Proto-Oncogene Proteins c-akt/antagonists & inhibitors
- Proto-Oncogene Proteins c-akt/metabolism
- Rats, Sprague-Dawley
- Receptors, Opioid, kappa/agonists
- Receptors, Opioid, kappa/antagonists & inhibitors
- Receptors, Opioid, kappa/metabolism
- Ribonucleotides/pharmacology
- Ribonucleotides/therapeutic use
- Signal Transduction
- Troponin T/blood
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Affiliation(s)
- Shumiao Zhang
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Yaguang Zhou
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Lei Zhao
- Department of Neurosurgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710033, Shaanxi Province, China
| | - Xin Tian
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China; Department of Cardiology, Traditional Chinese Medicine Hospital of Shaanxi Province, Xi'an 710003, Shaanxi Province, China
| | - Min Jia
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Xiaoming Gu
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Na Feng
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Rui An
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710033, Shaanxi Province, China
| | - Lu Yang
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Guoxu Zheng
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Juan Li
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Haitao Guo
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
| | - Rong Fan
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China.
| | - Jianming Pei
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China.
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A New Chimeric Natriuretic Peptide, C NAA C, for the Treatment of Left Ventricular Dysfunction after Myocardial Infarction. Sci Rep 2017; 7:10099. [PMID: 28855643 PMCID: PMC5577105 DOI: 10.1038/s41598-017-10748-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 08/14/2017] [Indexed: 01/14/2023] Open
Abstract
An innovative natriuretic peptide analog named CNAAC (structurally consisting of the C-terminus and ring of ANP and the N-terminus of CNP) that has been shown to exhibit potent vasodilatory, diuretic, and hypotensive effects in our previous study was evaluated for the treatment of left ventricular dysfunction following myocardial infarction. The temporal relaxation effect and metabolic status of CNAAC were determined. A myocardial ischemic model was established. Rats were randomly divided into Sham, MI, MI-ANP, MI-CNP, MI-VNP, and MI-CNAAC groups. Humoral factors were measured; echocardiography and hemodynamics methods were employed to assess the cardiac function at the fourth week after modeling. The results showed that CNAAC had a potent relaxant effect and longer duration of action than ANP, CNP, or VNP. The stability of CNAAC in blood was higher than other three NPs. Four weeks of NP administration ameliorated diastolic and systolic dysfunction, the hypertrophic index, myocardial fibrosis, and infarct size; it also restored the abnormal changes in humoral factors. These results demonstrate that CNAAC has a potent cardioprotective effect against left ventricular dysfunction after myocardial infarction. The results may lay the foundation for the clinical application of this newly designed NP chimera in the treatment and prevention of heart failure.
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