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Zhang W, Dong E, Zhang J, Zhang Y. CaMKII, 'jack of all trades' in inflammation during cardiac ischemia/reperfusion injury. J Mol Cell Cardiol 2023; 184:48-60. [PMID: 37813179 DOI: 10.1016/j.yjmcc.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/11/2023]
Abstract
Myocardial infarction and revascularization cause cardiac ischemia/reperfusion (I/R) injury featuring cardiomyocyte death and inflammation. The Ca2+/calmodulin dependent protein kinase II (CaMKII) family are serine/ threonine protein kinases that are involved in I/R injury. CaMKII exists in four different isoforms, α, β, γ, and δ. In the heart, CaMKII-δ is the predominant isoform,with multiple splicing variants, such as δB, δC and δ9. During I/R, elevated intracellular Ca2+ concentrations and reactive oxygen species activate CaMKII. In this review, we summarized the regulation and function of CaMKII in multiple cell types including cardiomyocytes, endothelial cells, and macrophages during I/R. We conclude that CaMKII mediates inflammation in the microenvironment of the myocardium, resulting in cell dysfunction, elevated inflammation, and cell death. However, different CaMKII-δ variants exhibit distinct or even opposite functions. Therefore, reagents/approaches that selectively target specific CaMKII isoforms and variants are needed for evaluating and counteracting the exact role of CaMKII in I/R injury and developing effective treatments against I/R injury.
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Affiliation(s)
- Wenjia Zhang
- State Key Laboratory of Vascular Homeostasis and Remodeling, Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China
| | - Erdan Dong
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China; Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing 100191, China; Haihe Laboratory of Cell Ecosystem, Beijing 100191, China
| | - Junxia Zhang
- Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China; Department of Cardiology and Institute of Vascular Medicine, Peking University Third Hospital, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing 100191, China; Haihe Laboratory of Cell Ecosystem, Beijing 100191, China.
| | - Yan Zhang
- State Key Laboratory of Vascular Homeostasis and Remodeling, Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China; Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing 100191, China.
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2
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Xu L, He D, Wu Y, Shen L, Wang Y, Xu Y. Tanshinone IIA inhibits cardiomyocyte apoptosis and rescues cardiac function during doxorubicin-induced cardiotoxicity by activating the DAXX/MEK/ERK1/2 pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 107:154471. [PMID: 36182795 DOI: 10.1016/j.phymed.2022.154471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 09/05/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Heart failure (HF) is a common cardiovascular syndrome. Tanshinone IIA (Tan IIA) is a pharmacologically active monomer that exerts a significant cardioprotective effect in the clinic; however, the specific mechanisms are not fully understood. PURPOSE We mainly investigated the protective effects of Tan IIA on doxorubicin (DOX)-induced HF. METHODS In an in vitro study, H9C2 and HL-1 cells were cultured and treated with DOX and Tan IIA for 24 h, we investigated the mechanism underlying Tan IIA-mediated protection. In an in vivo study, a model of DOX-induced HF was established in C57BL/6 mice that were divided into the six groups randomly: a control group, a DOX group, DOX groups treated with Tan IIA (DOX+Tan IIA) at dosages of 2.5, 5 and 10 mg/kg/day and DOX groups treated with N-acetylcysteine (NAC) at dosages of 200 mg/kg/day. RESULT The results demonstrated that Tan IIA significantly increased cell viability and protected against DOX-induced apoptosis. RNA-sequencing showed that the genes expression associated with the apoptotic signaling pathway was altered by Tan IIA. Among the differentially expressed genes, death-domain associated protein (DAXX), which plays an critical role in apoptotic signaling, exhibited increased expression under Tan IIA treatment. In addition, RNA interference was used to silence the expression of DAXX, which abolished Tan IIA-mediated protection against DOX-induced apoptosis; this effect was associated with extracellular signal-regulated protein kinase 1/2 (ERK1/2) and mitogen-activated protein kinase (MEK) expression. In the in vivo study, the echocardiography results revealed that heart function was rescued by Tan IIA, and the histomorphology results showed that Tan IIA prevented myocardial structural alteration and myofibril disruption. Furthermore, Tan IIA induced the expressions of DAXX, p-ERK1/2 and p-MEK. Tan IIA also inhibited apoptosis by suppressing the expression of cleaved caspase-8, p-P38 and cleaved caspase-3. CONCLUSION Our results provide novel interpretations into the important role of DAXX in DOX-induced cardiotoxicity and show that Tan IIA may be a novel agent strategy for HF treatment via activating the DAXX/MEK/ERK1/2 pathway.
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Affiliation(s)
- Linhao Xu
- Department of Cardiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, #261 Huansha Road, Shangcheng District, Hangzhou, Zhejiang 310006, China; Translational Medicine Research Center, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Daqiang He
- Department of Laboratory Medicine, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Yirong Wu
- Department of Cardiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, #261 Huansha Road, Shangcheng District, Hangzhou, Zhejiang 310006, China
| | - Lishui Shen
- Department of Cardiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, #261 Huansha Road, Shangcheng District, Hangzhou, Zhejiang 310006, China
| | - Yongmei Wang
- Department of Cardiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, #261 Huansha Road, Shangcheng District, Hangzhou, Zhejiang 310006, China
| | - Yizhou Xu
- Department of Cardiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, #261 Huansha Road, Shangcheng District, Hangzhou, Zhejiang 310006, China.
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Kompa AR, Khong FL, Zhang Y, Nguyen C, Edgley AJ, Woodman OL, McLachlan G, Kelly DJ. NP202 treatment improves left ventricular systolic function and attenuates pathological remodelling following chronic myocardial infarction. Life Sci 2022; 289:120220. [PMID: 34902438 DOI: 10.1016/j.lfs.2021.120220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 11/19/2022]
Abstract
AIMS Myocardial injury is a major contributor to left ventricular (LV) remodelling activating neurohormonal and inflammatory processes that create an environment of enhanced oxidative stress. This results in geometric and structural alterations leading to reduced LV systolic function. In this study we evaluated the efficacy of NP202, a synthetic flavonol, on cardiac remodelling in a chronic model of myocardial infarction (MI). MAIN METHODS A rat model of chronic MI was induced by permanent surgical ligation of the coronary artery. NP202 treatment was commenced 2 days post-MI for 6 weeks at different doses (1, 10 and 20 mg/kg/day) to determine efficacy. Cardiac function was assessed by echocardiography prior to treatment and at week 6, and pressure-volume measurements were performed prior to tissue collection. Tissues were analysed for changes in fibrotic and inflammatory markers using immunohistochemistry and gene expression analysis. KEY FINDINGS Rats treated with NP202 demonstrated improved LV systolic function and LV geometry compared to vehicle treated animals. Furthermore, measures of hypertrophy and interstitial fibrosis were attenuated in the non-infarct region of the myocardium with NP202 at the higher dose of 20 mg/kg (P < 0.05). At the tissue level, NP202 reduced monocyte chemoattractant protein-1 expression (P < 0.05) and tended to attenuate active caspase-3 expression to similar levels observed in sham animals (P = 0.075). SIGNIFICANCE Improved LV function and structural changes observed with NP202 may be mediated through inhibition of inflammatory and apoptotic processes in the MI setting. NP202 could therefore prove a useful addition to standard therapy in patients with post-MI LV dysfunction.
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Affiliation(s)
- Andrew R Kompa
- The University of Melbourne, Department of Medicine, St Vincent's Hospital, Fitzroy, VIC, Australia.
| | - Fay L Khong
- The University of Melbourne, Department of Medicine, St Vincent's Hospital, Fitzroy, VIC, Australia
| | - Yuan Zhang
- The University of Melbourne, Department of Medicine, St Vincent's Hospital, Fitzroy, VIC, Australia
| | - Cindy Nguyen
- The University of Melbourne, Department of Medicine, St Vincent's Hospital, Fitzroy, VIC, Australia
| | - Amanda J Edgley
- The University of Melbourne, Department of Medicine, St Vincent's Hospital, Fitzroy, VIC, Australia
| | - Owen L Woodman
- Monash University, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | | | - Darren J Kelly
- The University of Melbourne, Department of Medicine, St Vincent's Hospital, Fitzroy, VIC, Australia
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Zhang Y, Liu S, Ding L, Wang D, Li Q, Li D. Circ_0030235 knockdown protects H9c2 cells against OGD/R-induced injury via regulation of miR-526b. PeerJ 2021; 9:e11482. [PMID: 34820154 PMCID: PMC8603820 DOI: 10.7717/peerj.11482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/27/2021] [Indexed: 11/20/2022] Open
Abstract
Backgrounds Acute myocardial infarction (MI) is the common clinical manifestation of coronary heart disease. Circular RNAs (circRNAs) act key roles in cardiomyocytes growth and angiogenesis. However, their functions in MI are not entirely clear. This research intended to investigate the role and underlying mechanisms of circ_0030235 in H9c2 cells. Methods H9c2 cells were conducted to oxygen glucose deprivation/reperfusion (OGD/R) inducement to establish the MI model. Circ_0030235 and miR-526b expression was tested and altered by qRT-PCR and transfection. Cell viability, apoptosis and reactive oxygen species (ROS) injury were tested by CCK-8 assay, TUNEL assay kit, and ROS Detection Assay Kit, respectively. Assessment of cell injury-related factors was performed by employing ELISA, Mitochondrial Viability Staining and the JC-1-Mitochondrial Membrane Potential Assay Kit. The relationship between circ_0030235 and miR-526b was analyzed by dual luciferase reporter assay. The expression of key proteins was analyzed by western blot. Results Circ_0030235 was highly expressed in OGD/R-induced H9c2 cells. OGD/R inducement cell viability, while accelerated apoptosis. Besides, the level ROS, cell injury-related factors, mitochondrial membrane potential were notably elevated by OGD/R inducement, while mitochondrial viability was remarkably declined. Whereas, these impacts were all noticeably remitted by circ_0030235 knockdown. miR-526b was a target of circ_0030235. Circ_0030235 knockdown-induced impacts were all notably abrogated by miR-526b inhibition, including the activating impacts on PI3K/AKT and MEK/ERK pathways. Conclusions This research implied that circ_0030235 knockdown might remit OGD/R-induced impacts via activation of PI3K/AKT and MEK/ERK pathways and regulation of miR-526b.
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Affiliation(s)
- Yuquan Zhang
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Shuzhu Liu
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Limin Ding
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Dawei Wang
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Qiangqiang Li
- Department of Library, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Library, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
| | - Dongdong Li
- Department of Gerontology, The First Hospital of Qiqihar, Qiqihar, Heilongjiang, China.,Department of Gerontology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China
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Antiapoptotic Effect by PAR-1 Antagonist Protects Mouse Liver Against Ischemia-Reperfusion Injury. J Surg Res 2019; 246:568-583. [PMID: 31653415 DOI: 10.1016/j.jss.2019.09.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/30/2019] [Accepted: 09/19/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND Coagulation disturbances in several liver diseases lead to thrombin generation, which triggers intracellular injury via activation of protease-activated receptor-1 (PAR-1). Little is known about the thrombin/PAR-1 pathway in hepatic ischemia-reperfusion injury (IRI). The present study aimed to clarify whether a newly selective PAR-1 antagonist, vorapaxar, can attenuate liver damage caused by hepatic IRI, with a focus on apoptosis and the survival-signaling pathway. METHODS A 60-min hepatic partial-warm IRI model was used to evaluate PAR-1 expression in vivo. Subsequently, IRI mice were treated with or without vorapaxar (with vehicle). In addition, hepatic sinusoidal endothelial cells (SECs) pretreated with or without vorapaxar (with vehicle) were incubated during hypoxia-reoxygenation in vitro. RESULTS In naïve livers, PAR-1 was confirmed by immunohistochemistry and immunofluorescence analysis to be located on hepatic SECs, and IRI strongly enhanced PAR-1 expression. In IRI mice models, vorapaxar treatment significantly decreased serum transaminase levels, improved liver histological damage, reduced the number of apoptotic cells as evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling staining (median: 135 versus 25, P = 0.004), and induced extracellular signal-regulated kinase 1/2 (ERK 1/2) cell survival signaling (phospho-ERK/total ERK 1/2: 0.96 versus 5.34, P = 0.004). Pretreatment of SECs with vorapaxar significantly attenuated apoptosis and induced phosphorylation of ERK 1/2 in vitro (phospho-ERK/total ERK 1/2: 0.66 versus 3.04, P = 0.009). These changes were abolished by the addition of PD98059, the ERK 1/2 pathway inhibitor, before treatment with vorapaxar. CONCLUSIONS The results of the present study revealed that hepatic IRI induces significant enhancement of PAR-1 expression on SECs, which may be associated with suppression of survival signaling pathways such as ERK 1/2, resulting in severe apoptosis-induced hepatic damage. Thus, the selective PAR-1 antagonist attenuates hepatic IRI through an antiapoptotic effect by the activation of survival-signaling pathways.
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Chang D, Li H, Qian C, Wang Y. DiOHF Protects Against Doxorubicin-Induced Cardiotoxicity Through ERK1 Signaling Pathway. Front Pharmacol 2019; 10:1081. [PMID: 31611788 PMCID: PMC6777440 DOI: 10.3389/fphar.2019.01081] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Accepted: 08/26/2019] [Indexed: 11/13/2022] Open
Abstract
Doxorubicin (DOX) is an effective anticancer agent. Its clinical use is, however, limited due to its detrimental side effects, especially the cardiotoxicity caused by ROS, mitochondrial dysfunction and apoptosis. 3’,4’-dihydroxyflavonol (DiOHF) is a recently developed potent synthetic flavonoid which has been reported to exert anti-oxidative activity in myocardial ischemia–reperfusion injury and maintain the normal mitochondrial function. The aim of this study was to explore the protective effects of DiOHF on the DOX-induced cardiotoxicity. We established DOX-induced cardiotoxicity in H9C2 cells by incubation with 1 μM DOX and in BALB/c mice by DOX injection. DiOHF effectively prevented and reversed the DOX-induced cardiotoxicity, including ROS production, mitochondrial dysfunction, and apoptosis. The DOX-induced cardiotoxicity was accompanied by ERK1/2 activation and abolished by the silence of ERK1, rather than ERK2. Furthermore, DOX treatment in mice induced an increase in serum CK-MB level and myocardial fibrosis with a reduction in left ventricular (LV) function. These detrimental effects were blunted by DiOHF administration. Conclusion: DiOHF suppresses and reverses the DOX-induced cardiotoxicity by inhibiting ROS release, stabilizing mitochondrial function and reducing apoptosis through activation of the ERK1 signaling.
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Affiliation(s)
- Danqi Chang
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Hang Li
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Cheng Qian
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Yanggan Wang
- Department of Cardiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China.,Medical Research Institute of Wuhan University, Wuhan University, Wuhan, China
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Zhang Z, Li H, Liu M, He J, Zhang X, Chen Y. Skullcapflavone I protects cardiomyocytes from hypoxia-caused injury through up-regulation of lincRNA-ROR. Int J Immunopathol Pharmacol 2019; 33:2058738419857537. [PMID: 31220954 PMCID: PMC6589964 DOI: 10.1177/2058738419857537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Myocardial infarction (MI) is a serious heart disease in which cardiomyocytes are damaged, caused by hypoxia. This study explored the possible protective activity of Skullcapflavone I (SF I), a flavonoid isolated from the root of Scutellaria baicalensis Georgi, on hypoxia-stimulated cardiomyocytes cell injury in vitro. Viability and apoptosis of H9c2 cells and primary cardiomyocytes were tested using cell counting kit–8 (CCK-8) assay and Guava Nexin Reagent, respectively. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) was used to measure the long non-coding RNA regulator of reprogramming (lincRNA-ROR) expression. si-ROR was transfected to knockdown lincRNA-ROR. Western blotting was conducted to assess the protein levels of key molecules related to cell proliferation, apoptosis, and mitogen-activated protein kinase/extracellular signal–regulated kinase (MEK/ERK) pathway. We discovered that hypoxia stimulation obviously reduced H9c2 cell and primary cardiomyocytes’ viability and proliferation, but promoted cell apoptosis. SF I treatment mitigated the cell viability and proliferation inhibition, as well as cell apoptosis caused by hypoxia. Moreover, SF I promoted the hypoxia-caused up-regulation of lincRNA-ROR in H9c2 cells and primary cardiomyocytes. Knockdown of lincRNA-ROR reversed the influence of SF I on hypoxia-stimulated H9c2 cells and primary cardiomyocytes. Besides, SF I activated MEK/ERK pathway in H9c2 cells and primary cardiomyocytes via up-regulating lincRNA-ROR. To sum up, our research verified the beneficial activity of SF I on hypoxia-caused cardiomyocytes injury. SF I protected cardiomyocytes from hypoxia-caused injury through up-regulation of lincRNA-ROR and activation of MEK/ERK pathway.
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Affiliation(s)
- Zhenxiao Zhang
- 1 Department of Emergency, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hui Li
- 1 Department of Emergency, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mingyang Liu
- 1 Department of Emergency, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jianshuai He
- 2 Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaotian Zhang
- 2 Department of Anesthesiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuehua Chen
- 3 Department of Intensive Care Unit, The Affiliated Hospital of Qingdao University, Qingdao, China
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Li Q, Zhang Z, Li H, Pan X, Chen S, Cui Z, Ma J, Zhou Z, Xing B. Lycium barbarum polysaccharides protects H9c2 cells from hypoxia-induced injury by down-regulation of miR-122. Biomed Pharmacother 2019; 110:20-28. [DOI: 10.1016/j.biopha.2018.11.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 10/22/2018] [Accepted: 11/02/2018] [Indexed: 02/07/2023] Open
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Pretreatment with Total Flavonoid Extract from Dracocephalum Moldavica L. Attenuates Ischemia Reperfusion-induced Apoptosis. Sci Rep 2018; 8:17491. [PMID: 30504832 PMCID: PMC6269513 DOI: 10.1038/s41598-018-35726-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 11/08/2018] [Indexed: 02/08/2023] Open
Abstract
We previously demonstrated the cardio-protection mediated by the total flavonoid extracted from Dracocephalum moldavica L. (TFDM) following myocardial ischemia reperfusion injury (MIRI). The present study assessed the presence and mechanism of TFDM-related cardio-protection on MIRI-induced apoptosis in vivo. Male Sprague-Dawley rats experienced 45-min ischemia with 12 h of reperfusion. Rats pretreated with TFDM (3, 10 or 30 mg/kg/day) were compared with Sham (no MIRI and no TFDM), MIRI (no TFDM), and Positive (trapidil tablets, 13.5 mg/kg/day) groups. In MIRI-treated rats, high dose-TFDM (H-TFDM) pre-treatment with apparently reduced release of LDH, CK-MB and MDA, enhanced the concentration of SOD in plasma, and greatly reduced the infarct size, apoptotic index and mitochondrial injury. H-TFDM pretreatment markedly promoted the phosphorylation of PI3K, Akt, GSK-3β and ERK1/2 in comparison with the MIRI model group. Western blot analysis after reperfusion also showed that H-TFDM decreased release of Bax, cleaved caspase-3, caspase-7 and caspase-9, and increased expression of Bcl-2 as evident by the higher Bcl-2/Bax ratio. TFDM cardio-protection was influenced by LY294002 (PI3K inhibitor) and PD98059 (ERK1/2 inhibitor). Taken together, these results provide convincing evidence of the benefit of TFDM pretreatment due to inhibited myocardial apoptosis as mediated by the PI3K/Akt/GSK-3β and ERK1/2 signaling pathways.
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Sun N, Yang L, Zhang Q, Zou C. Pioglitazone alleviates oxygen and glucose deprivation-induced injury by up-regulation of miR-454 in H9c2 cells. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2018; 21:1050-1055. [PMID: 30524679 PMCID: PMC6281065 DOI: 10.22038/ijbms.2018.29223.7063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/18/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Pioglitazone, an anti-diabetic agent, has been widely used to treat type II diabetes. However, the effect of pioglitazone on myocardial ischemia reperfusion injury (MIRI) is still unclear. Herein, the objective of this study is to learn about the regulation and mechanism of pioglitazone effects on oxygen glucose deprivation (OGD)-induced myocardial cell injury. MATERIALS AND METHODS A cellular injury model of OGD-treated H9c2 cells in vitro was constructed to simulate ischemic/reperfusion (I/R) injury. Then, various concentrations of pioglitazone (0, 2.5, 5, 7.5 and 10 μM) were used for the treatment of H9c2 cells, and CCK-8, flow cytometry and western blot assays were performed to examine cell viability, apoptosis, and the protein levels of factors involved in cell cycle and apoptosis in OGD-treated cells. MiR-454 inhibitor was used to suppress miR-454 expression, and whether miR-454 was involved in regulating OGD-induced cell injury was studied. Two key signal pathways were examined to uncover the underlying mechanism. RESULTS OGD reduced cell proliferation and induced apoptosis in H9c2 cells (P<0.05, P<0.01 or P< 0.001). OGD-induced injury was significantly attenuated by pioglitazone at the concentration of 5 μM. Additionally, pioglitazone significantly up-regulated miR-454 expression in OGD-injured cells (P< 0.05 or P< 0.01). MiR-454 suppression declined the protective effect of pioglitazone on OGD-injured H9c2 cells (P<0.05 or P< 0.01). Besides, pioglitazone activated PI3K/AKT and ERK/MAPK pathways via up-regulating miR-454. CONCLUSION Pioglitazone protected H9c2 cells against OGD-induced injury through up-regulating miR-454, indicating a novel therapeutic strategy for treatment of MIRI.
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Affiliation(s)
- Nianzi Sun
- Shandong University, Jinan 250100, Shangdong, China
- Department of Cardiac Surgery, Linyi People’s Hospital, Linyi 276000, Shandong, China
| | - Lin Yang
- Department of Equipment, Linyi People’s Hospital, Linyi 276000, Shandong, China
| | - Qian Zhang
- Department of Cardiac Surgery, Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
| | - Chengwei Zou
- Department of Cardiac Surgery, Provincial Hospital Affiliated to Shandong University, Jinan 250021, Shandong, China
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Chin KY, Silva LS, Darby IA, Ng DC, Woodman OL. Protection against reperfusion injury by 3′,4′-dihydroxyflavonol in rat isolated hearts involves inhibition of phospholamban and JNK2. Int J Cardiol 2018; 254:265-271. [DOI: 10.1016/j.ijcard.2017.11.101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 11/21/2017] [Accepted: 11/27/2017] [Indexed: 11/29/2022]
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12
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Tong S, Zhang L, Joseph J, Jiang X. Celastrol pretreatment attenuates rat myocardial ischemia/ reperfusion injury by inhibiting high mobility group box 1 protein expression via the PI3K/Akt pathway. Biochem Biophys Res Commun 2018; 497:843-849. [PMID: 29475002 DOI: 10.1016/j.bbrc.2018.02.121] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 02/13/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND/AIMS Celastrol pretreatment has been shown to protect against myocardial ischemia/reperfusion (I/R) injury, but the underlying mechanism is poorly understood. This study aimed to investigate the cardioprotective effects of celastrol pretreatment on I/R injury and to further explore whether its mechanism of action was associated with the inhibition of high mobility group box 1 protein (HMGB1) expression via the phosphoinositide 3-kinase (PI3K)/Akt pathway. METHODS In a fixed-dose study, hematoxylin and eosin staining and myocardial enzyme measurements were used to determine the optimal dose of celastrol that elicited the best cardioprotective effects against I/R injury. Furthermore, rats were pretreated with 4 mg/kg celastrol, and infarct size and the levels of myocardial enzymes, apoptosis, inflammatory and oxidative indices, and HMGB1 and p-Akt expression were measured. RESULTS Our results indicated that celastrol dose-dependently attenuated histopathological changes and the elevation in myocardial enzymes induced by I/R. Moreover, the celastrol pretreatment (4 mg/kg) not only significantly decreased infarct size as well as myocardial enzyme levels but also inhibited myocardial apoptosis, inflammatory response and oxidative stress. Additionally, celastrol downregulated HMGB1 expression and upregulated p-Akt expression in the myocardium. LY294002, a specific pI3k inhibitor, partially reversed the decreased HMGB1 expression, increased p-Akt expression induced by celastrol, and abolished the anti-apoptotic, anti-inflammatory and anti-oxidative effects of celastrol. CONCLUSION These findings suggest that short-term pretreatment with celastrol protects against myocardial I/R injury by suppressing myocardial apoptosis, inflammatory response and oxidative stress via pI3k/Akt pathway activation and HMGB1 inhibition.
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Affiliation(s)
- Suiyang Tong
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, PR China; Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Liangliang Zhang
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Jacob Joseph
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States
| | - Xuejun Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei, PR China.
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13
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Serum Exosomes Attenuate H 2O 2-Induced Apoptosis in Rat H9C2 Cardiomyocytes via ERK1/2. J Cardiovasc Transl Res 2018; 12:37-44. [PMID: 29404859 DOI: 10.1007/s12265-018-9791-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 01/09/2018] [Indexed: 12/30/2022]
Abstract
Exosomes are small-sized vesicles that can be released from cells into the serum. Exosomes play important roles in regulating many biological processes including cell proliferation, apoptosis, cell cycle, and metabolism. However, the roles and mechanisms of plasma exosomes in the apoptosis of rat H9C2 cardiomyocytes are largely unknown. In this study, we isolated plasma exosomes as confirmed by the marker protein CD63. Using flow cytometry and western blot analysis, we found that exosomes attenuated hydrogen peroxide (H2O2)-induced apoptosis and improved survival of rat H9C2 cardiomyocytes. Furthermore, the anti-apoptosis effects of serum exosomes in rat H9C2 cardiomyocytes were mediated by the activation of ERK1/2 signaling pathway. These data indicated that plasma exosomes had the protective effects against cardiomyocyte apoptosis and might be a novel therapy strategy for myocardial injury.
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14
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Qi J, Pan W, Tan Y, Luo J, Fan D, Yu J, Wu J, Zhang M. Shexiang Tongxin dropping pill protects against isoproterenol-induced myocardial ischemia in vivo and in vitro. Oncotarget 2017; 8:108958-108969. [PMID: 29312582 PMCID: PMC5752495 DOI: 10.18632/oncotarget.22440] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 10/28/2017] [Indexed: 12/19/2022] Open
Abstract
Shexiang Tongxin dropping pill (STDP) is a formulae of Chinese Medicine commonly used to treating angina pectoris in China. However, its mechanism of action is still yet unclear. This study investigated the roles of STDP on myocardial ischemia injury. We constructed a rat model of myocardial injury (isoproterenol subcutaneous injection, i.h, 85 mg/kg/day for 2 days), and compared among 4 groups: CON (control), ISO (ischemic injury model), MET (metoprolol), and STDP. Serum contents of Troponin I (cTnI), creatine kinase (CK), CK-MB, lactate dehydrogenase (LDH), alpha-hydroxybutyric dehydrogenase (α-HBD), and Aspartate Aminotransferase were detected and five STDP doses (1, 10, 100, 1000 and 10000 mg/kg/day) were chosen to obtain a dose-response curve. Western-blot was used to detect phosphorylations of extracellular signal-regulated kinase 1/2 (ERK1/2), protein kinase B (AKT), and camodulin kinase II (CamkII). Furthermore, an ERK1/2 inhibitor PD98059, a phosphatidylinositol-3-kinase inhibitor, LY294002, and a CamKII inhibitor, KN-93 were administered i.h. RESULTS cTnI, CK, CK-MB, α-HBD, and LDH were significantly lower in STDP than ISO (P<0.05). STDP exhibited a dose-dependent effect with a half maximal inhibitory concentration of 42 mg/kg/day. Phosphorylation of ERK1/2 was enhanced in the STDP group (vs. ISO, P<0.05), while AKT and CamkII were not changed. Further, the protective effects of STDP were offset by PD98059 administration i.h. In conclusion, STDP protected against the ISO-induced myocardial ischemic injury via an ERK1/2 signaling pathway, which provided a mechanism to support clinical applications of STDP as treatment for ischemic heart disease.
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Affiliation(s)
- Jianyong Qi
- AMI Key Laboratory of Chinese Medicine in Guangzhou, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China.,Intensive Care Research Team of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Wenjun Pan
- AMI Key Laboratory of Chinese Medicine in Guangzhou, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China.,Intensive Care Research Team of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Yafang Tan
- AMI Key Laboratory of Chinese Medicine in Guangzhou, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China.,Intensive Care Research Team of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Jiaru Luo
- AMI Key Laboratory of Chinese Medicine in Guangzhou, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China.,Intensive Care Research Team of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Dancai Fan
- AMI Key Laboratory of Chinese Medicine in Guangzhou, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China.,Intensive Care Research Team of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Juan Yu
- Animal Center, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China
| | - Jiashin Wu
- Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, Ohio 44272, USA
| | - Minzhou Zhang
- AMI Key Laboratory of Chinese Medicine in Guangzhou, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China.,Intensive Care Research Team of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Province Hospital of Chinese Medicine, Guangzhou 510006, China
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15
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Mattera R, Benvenuto M, Giganti MG, Tresoldi I, Pluchinotta FR, Bergante S, Tettamanti G, Masuelli L, Manzari V, Modesti A, Bei R. Effects of Polyphenols on Oxidative Stress-Mediated Injury in Cardiomyocytes. Nutrients 2017; 9:nu9050523. [PMID: 28531112 PMCID: PMC5452253 DOI: 10.3390/nu9050523] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/09/2017] [Accepted: 05/16/2017] [Indexed: 12/20/2022] Open
Abstract
Cardiovascular diseases are the main cause of mortality and morbidity in the world. Hypertension, ischemia/reperfusion, diabetes and anti-cancer drugs contribute to heart failure through oxidative and nitrosative stresses which cause cardiomyocytes nuclear and mitochondrial DNA damage, denaturation of intracellular proteins, lipid peroxidation and inflammation. Oxidative or nitrosative stress-mediated injury lead to cardiomyocytes apoptosis or necrosis. The reactive oxygen (ROS) and nitrogen species (RNS) concentration is dependent on their production and on the expression and activity of anti-oxidant enzymes. Polyphenols are a large group of natural compounds ubiquitously expressed in plants, and epidemiological studies have shown associations between a diet rich in polyphenols and the prevention of various ROS-mediated human diseases. Polyphenols reduce cardiomyocytes damage, necrosis, apoptosis, infarct size and improve cardiac function by decreasing oxidative stress-induced production of ROS or RNS. These effects are achieved by the ability of polyphenols to modulate the expression and activity of anti-oxidant enzymes and several signaling pathways involved in cells survival. This report reviews current knowledge on the potential anti-oxidative effects of polyphenols to control the cardiotoxicity induced by ROS and RNS stress.
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Affiliation(s)
- Rosanna Mattera
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy.
| | - Monica Benvenuto
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy.
| | - Maria Gabriella Giganti
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy.
| | - Ilaria Tresoldi
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy.
| | | | - Sonia Bergante
- IRCCS "S. Donato" Hospital, San Donato Milanese, Piazza Edmondo Malan, 20097 Milan, Italy.
| | - Guido Tettamanti
- IRCCS "S. Donato" Hospital, San Donato Milanese, Piazza Edmondo Malan, 20097 Milan, Italy.
| | - Laura Masuelli
- Department of Experimental Medicine, University of Rome "Sapienza", 00164 Rome, Italy.
| | - Vittorio Manzari
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy.
| | - Andrea Modesti
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy.
- Center for Regenerative Medicine (CIMER), University of Rome "Tor Vergata", 00133 Rome, Italy.
| | - Roberto Bei
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy.
- Center for Regenerative Medicine (CIMER), University of Rome "Tor Vergata", 00133 Rome, Italy.
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