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Yang Y, Johnson J, Troupes CD, Feldsott EA, Kraus L, Megill E, Bian Z, Asangwe N, Kino T, Eaton DM, Wang T, Wagner M, Ma L, Bryan C, Wallner M, Kubo H, Berretta RM, Khan M, Wang H, Kishore R, Houser SR, Mohsin S. miR-182/183-Rasa1 axis induced macrophage polarization and redox regulation promotes repair after ischemic cardiac injury. Redox Biol 2023; 67:102909. [PMID: 37801856 PMCID: PMC10570148 DOI: 10.1016/j.redox.2023.102909] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 09/26/2023] [Indexed: 10/08/2023] Open
Abstract
Few therapies have produced significant improvement in cardiac structure and function after ischemic cardiac injury (ICI). Our possible explanation is activation of local inflammatory responses negatively impact the cardiac repair process following ischemic injury. Factors that can alter immune response, including significantly altered cytokine levels in plasma and polarization of macrophages and T cells towards a pro-reparative phenotype in the myocardium post-MI is a valid strategy for reducing infarct size and damage after myocardial injury. Our previous studies showed that cortical bone stem cells (CBSCs) possess reparative effects after ICI. In our current study, we have identified that the beneficial effects of CBSCs appear to be mediated by miRNA in their extracellular vesicles (CBSC-EV). Our studies showed that CBSC-EV treated animals demonstrated reduced scar size, attenuated structural remodeling, and improved cardiac function versus saline treated animals. These effects were linked to the alteration of immune response, with significantly altered cytokine levels in plasma, and polarization of macrophages and T cells towards a pro-reparative phenotype in the myocardium post-MI. Our detailed in vitro studies demonstrated that CBSC-EV are enriched in miR-182/183 that mediates the pro-reparative polarization and metabolic reprogramming in macrophages, including enhanced OXPHOS rate and reduced ROS, via Ras p21 protein activator 1 (RASA1) axis under Lipopolysaccharides (LPS) stimulation. In summary, CBSC-EV deliver unique molecular cargoes, such as enriched miR-182/183, that modulate the immune response after ICI by regulating macrophage polarization and metabolic reprogramming to enhance repair.
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Affiliation(s)
- Yijun Yang
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Jaslyn Johnson
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Constantine D Troupes
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Eric A Feldsott
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Lindsay Kraus
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Emily Megill
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Zilin Bian
- Tandon School of Engineering, New York University, NY, United States
| | - Ngefor Asangwe
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Tabito Kino
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Deborah M Eaton
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Tao Wang
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Marcus Wagner
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Lena Ma
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Christopher Bryan
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Markus Wallner
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States; Division of Cardiology, Medical University of Graz, 8036, Graz, Austria
| | - Hajime Kubo
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Remus M Berretta
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Mohsin Khan
- Center for Metabolic Disease Research (CMDR), Temple University Lewis Katz School of Medicine, PA, United States
| | - Hong Wang
- Center for Metabolic Disease Research (CMDR), Temple University Lewis Katz School of Medicine, PA, United States
| | - Raj Kishore
- Center for Translational Medicine, Temple University Lewis Katz School of Medicine, PA, United States
| | - Steven R Houser
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States
| | - Sadia Mohsin
- Cardiovascular Research Center (CVRC), Temple University Lewis Katz School of Medicine, PA, United States.
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Sabe SA, Scrimgeour LA, Karbasiafshar C, Sabra M, Xu CM, Aboulgheit A, Abid MR, Sellke FW. Extracellular vesicles modulate inflammatory signaling in chronically ischemic myocardium of swine with metabolic syndrome. J Thorac Cardiovasc Surg 2023; 165:e225-e236. [PMID: 36028364 PMCID: PMC9898465 DOI: 10.1016/j.jtcvs.2022.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/20/2022] [Accepted: 07/07/2022] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Extracellular vesicle (EV) therapy has been shown to mitigate inflammation in animal models of acute myocardial ischemia/reperfusion. This study evaluates the effect of EV therapy on inflammatory signaling in a porcine model of chronic myocardial ischemia and metabolic syndrome. METHODS Yorkshire swine were fed a high-cholesterol diet for 4 weeks to induce metabolic syndrome, then underwent placement of an ameroid constrictor to the left circumflex artery to induce chronic myocardial ischemia. Two weeks later, pigs received intramyocardial injection of either saline (control) (n = 6) or EVs (n = 8). Five weeks later, pigs were put to death and left ventricular myocardial tissue in ischemic and nonischemic territories were harvested. Protein expression was measured with immunoblotting, and macrophage count was determined by immunofluorescent staining of cluster of differentiation 68. Data were statistically analyzed via Wilcoxon rank-sum test. RESULTS EV treatment was associated with decreased expression of proinflammatory markers nuclear factor kappa B (P = .002), pro-interleukin (IL) 1ß (P = .020), and cluster of differentiation 11c (P = .001) in ischemic myocardium, and decreased expression of nuclear factor kappa B in nonischemic myocardium (P = .03) compared with control. EV treatment was associated with increased expression of anti-inflammatory markers IL-10 (P = .020) and cluster of differentiation 163 (P = .043) in ischemic myocardium compared with control. There were no significant differences in expression of IL-6, tumor necrosis factor alpha, arginase, HLA class II histocompatibility antigen DR alpha chain, nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor alpha, or phosphorylated nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor alpha in ischemic myocardium or pro-IL1ß, IL-6, tumor necrosis factor alpha, IL-10, or nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor alpha in nonischemic myocardium of EV-treated pigs compared with control. There were no differences in macrophage count in ischemic myocardium between EV-treated pigs and control. CONCLUSIONS In the setting of metabolic syndrome and chronic myocardial ischemia, intramyocardial EV therapy attenuates proinflammatory signaling.
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Affiliation(s)
- Sharif A Sabe
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI
| | - Laura A Scrimgeour
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI
| | - Catherine Karbasiafshar
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI
| | - Mohamed Sabra
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI
| | - Cynthia M Xu
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI
| | - Ahmed Aboulgheit
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI
| | - M Ruhul Abid
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI
| | - Frank W Sellke
- Division of Cardiothoracic Surgery, Department of Surgery, Cardiovascular Research Center, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, RI.
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Du L, Yue H, Rorabaugh BR, Li OQY, DeHart AR, Toloza‐Alvarez G, Hong L, Denvir J, Thompson E, Li W. Thymidine Phosphorylase Deficiency or Inhibition Preserves Cardiac Function in Mice With Acute Myocardial Infarction. J Am Heart Assoc 2023; 12:e028023. [PMID: 36974758 PMCID: PMC10122909 DOI: 10.1161/jaha.122.028023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/22/2023] [Indexed: 03/29/2023]
Abstract
Background Ischemic cardiovascular disease is the leading cause of death worldwide. Current pharmacologic therapy has multiple limitations, and patients remain symptomatic despite maximal medical therapies. Deficiency or inhibition of thymidine phosphorylase (TYMP) in mice reduces thrombosis, suggesting that TYMP could be a novel therapeutic target for patients with acute myocardial infarction (AMI). Methods and Results A mouse AMI model was established by ligation of the left anterior descending coronary artery in C57BL/6J wild-type and TYMP-deficient (Tymp-/-) mice. Cardiac function was monitored by echocardiography or Langendorff assay. TYMP-deficient hearts had lower baseline contractility. However, cardiac function, systolic left ventricle anterior wall thickness, and diastolic wall strain were significantly greater 4 weeks after AMI compared with wild-type hearts. TYMP deficiency reduced microthrombus formation after AMI. TYMP deficiency did not affect angiogenesis in either normal or infarcted myocardium but increased arteriogenesis post-AMI. TYMP deficiency enhanced the mobilization of bone marrow stem cells and promoted mesenchymal stem cell (MSC) proliferation, migration, and resistance to inflammation and hypoxia. TYMP deficiency increased the number of larger MSCs and decreased matrix metalloproteinase-2 expression, resulting in a high homing capability. TYMP deficiency induced constitutive AKT phosphorylation in MSCs but reduced expression of genes associated with retinoid-interferon-induced mortality-19, a molecule that enhances cell death. Inhibition of TYMP with its selective inhibitor, tipiracil, phenocopied TYMP deficiency, improved post-AMI cardiac function and systolic left ventricle anterior wall thickness, attenuated diastolic stiffness, and reduced infarct size. Conclusions This study demonstrated that TYMP plays an adverse role after AMI. Targeting TYMP may be a novel therapy for patients with AMI.
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Affiliation(s)
- Lili Du
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
- Department of PathophysiologyCollege of Basic Medical Science, China Medical UniversityShenyangLiaoningChina
| | - Hong Yue
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
| | - Boyd R. Rorabaugh
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
- Department of Pharmaceutical SciencesSchool of Pharmacy at Marshall UniversityHuntingtonWVUSA
| | - Oliver Q. Y. Li
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
| | - Autumn R. DeHart
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
| | - Gretel Toloza‐Alvarez
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
| | - Liang Hong
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
| | - James Denvir
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
| | - Ellen Thompson
- Department of MedicineJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
| | - Wei Li
- Department of Biomedical SciencesJoan C. Edwards School of Medicine at Marshall UniversityHuntingtonWVUSA
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The multifaceted actions of the lncRNA H19 in cardiovascular biology and diseases. Clin Sci (Lond) 2022; 136:1157-1178. [PMID: 35946958 PMCID: PMC9366862 DOI: 10.1042/cs20210994] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 07/07/2022] [Accepted: 07/13/2022] [Indexed: 12/13/2022]
Abstract
Cardiovascular diseases are the leading cause of death and debility worldwide. Various molecular mechanisms have been studied to better understand the development and progression of cardiovascular pathologies with hope to eradicate these diseases. With the advancement of the sequencing technology, it is revealed that the majority of our genome is non-coding. A growing body of literature demonstrates the critical role of long non-coding RNAs (lncRNAs) as epigenetic regulators of gene expression. LncRNAs can regulate cellular biological processes through various distinct molecular mechanisms. The abundance of lncRNAs in the cardiovascular system indicates their significance in cardiovascular physiology and pathology. LncRNA H19, in particular, is a highly evolutionarily conserved lncRNA that is enriched in cardiac and vascular tissue, underlining its importance in maintaining homeostasis of the cardiovascular system. In this review, we discuss the versatile function of H19 in various types of cardiovascular diseases. We highlight the current literature on H19 in the cardiovascular system and demonstrate how dysregulation of H19 induces the development of cardiovascular pathophysiology.
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Bajic Z, Sobot T, Skrbic R, Stojiljkovic MP, Ponorac N, Matavulj A, Djuric DM. Homocysteine, Vitamins B6 and Folic Acid in Experimental Models of Myocardial Infarction and Heart Failure—How Strong Is That Link? Biomolecules 2022; 12:biom12040536. [PMID: 35454125 PMCID: PMC9027107 DOI: 10.3390/biom12040536] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 12/29/2022] Open
Abstract
Cardiovascular diseases are the leading cause of death and the main cause of disability. In the last decade, homocysteine has been found to be a risk factor or a marker for cardiovascular diseases, including myocardial infarction (MI) and heart failure (HF). There are indications that vitamin B6 plays a significant role in the process of transsulfuration in homocysteine metabolism, specifically, in a part of the reaction in which homocysteine transfers a sulfhydryl group to serine to form α-ketobutyrate and cysteine. Therefore, an elevated homocysteine concentration (hyperhomocysteinemia) could be a consequence of vitamin B6 and/or folate deficiency. Hyperhomocysteinemia in turn could damage the endothelium and the blood vessel wall and induce worsening of atherosclerotic process, having a negative impact on the mechanisms underlying MI and HF, such as oxidative stress, inflammation, and altered function of gasotransmitters. Given the importance of the vitamin B6 in homocysteine metabolism, in this paper, we review its role in reducing oxidative stress and inflammation, influencing the functions of gasotransmitters, and improving vasodilatation and coronary flow in animal models of MI and HF.
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Affiliation(s)
- Zorislava Bajic
- Department of Physiology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (Z.B.); (T.S.); (N.P.); (A.M.)
| | - Tanja Sobot
- Department of Physiology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (Z.B.); (T.S.); (N.P.); (A.M.)
| | - Ranko Skrbic
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (R.S.); (M.P.S.)
| | - Milos P. Stojiljkovic
- Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (R.S.); (M.P.S.)
| | - Nenad Ponorac
- Department of Physiology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (Z.B.); (T.S.); (N.P.); (A.M.)
| | - Amela Matavulj
- Department of Physiology, Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (Z.B.); (T.S.); (N.P.); (A.M.)
| | - Dragan M. Djuric
- Faculty of Medicine, Institute of Medical Physiology “Richard Burian”, University of Belgrade, 11000 Belgrade, Serbia
- Correspondence:
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Infarct in the Heart: What's MMP-9 Got to Do with It? Biomolecules 2021; 11:biom11040491. [PMID: 33805901 PMCID: PMC8064345 DOI: 10.3390/biom11040491] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 12/12/2022] Open
Abstract
Over the past three decades, numerous studies have shown a strong connection between matrix metalloproteinase 9 (MMP-9) levels and myocardial infarction (MI) mortality and left ventricle remodeling and dysfunction. Despite this fact, clinical trials using MMP-9 inhibitors have been disappointing. This review focuses on the roles of MMP-9 in MI wound healing. Infiltrating leukocytes, cardiomyocytes, fibroblasts, and endothelial cells secrete MMP-9 during all phases of cardiac repair. MMP-9 both exacerbates the inflammatory response and aids in inflammation resolution by stimulating the pro-inflammatory to reparative cell transition. In addition, MMP-9 has a dual effect on neovascularization and prevents an overly stiff scar. Here, we review the complex role of MMP-9 in cardiac wound healing, and highlight the importance of targeting MMP-9 only for its detrimental actions. Therefore, delineating signaling pathways downstream of MMP-9 is critical.
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Sia CH, Leow AST, Tan BYQ, Low CJ, Kaur R, Yeo TC, Chan MYY, Tay ELW, Yeo LLL, Yap ES, Loh JPY. The neutrophil-lymphocyte ratio and platelet-lymphocyte ratio predict left ventricular thrombus resolution in acute myocardial infarction without percutaneous coronary intervention. Thromb Res 2020; 194:16-20. [PMID: 32559523 DOI: 10.1016/j.thromres.2020.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/18/2020] [Accepted: 06/01/2020] [Indexed: 02/04/2023]
Abstract
BACKGROUND Left ventricular thrombosis (LVT) is a potentially devastating complication in post-acute myocardial infarction (AMI) patients. Previous studies have demonstrated that inflammation may contribute to thrombus formation, but its role on thrombus resolution is uncertain. The neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) are easily accessible haematological markers of inflammation. OBJECTIVES We aimed to identify differences between post-AMI LVT patients with and without LVT resolution, and to evaluate the utility of NLR and PLR in predicting LVT resolution. METHODS We included 289 consecutive post-AMI patients with LVT. Acute LVT was diagnosed based on echocardiogram. Patients were stratified based on LVT resolution. Logistic regression was performed to evaluate for independent predictors of thrombus resolution. RESULTS Compared to post-AMI patients with eventual LVT resolution, those with unresolved LVT had more co-morbidities such as hypertension (p = 0.003) and ischaemic heart disease (p < 0.001), fewer underwent percutaneous coronary intervention (PCI) (p < 0.001) or were treated with triple therapy (p < 0.001). NLR (p = 0.064) and PLR (p = 0.028) were higher in unresolved LVT patients. In non-PCI patients, NLR (OR 0.818, 95% CI 0.674-0.994, p = 0.043) and PLR (OR 0.989, 95% CI 0.979-0.999, p = 0.026) were independent predictors of thrombus resolution after adjustment for age and anticoagulation use. CONCLUSIONS Post-AMI patients not receiving PCI may have a greater inflammatory response and a higher NLR and PLR, which is associated with less LVT resolution despite anticoagulation. Further studies are required to study this association.
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Affiliation(s)
- Ching-Hui Sia
- Department of Cardiology, National University Heart Centre, Singapore, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
| | | | | | | | - Rajinderdeep Kaur
- Department of Cardiology, National University Heart Centre, Singapore, Singapore
| | - Tiong-Cheng Yeo
- Department of Cardiology, National University Heart Centre, Singapore, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Mark Yan-Yee Chan
- Department of Cardiology, National University Heart Centre, Singapore, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Edgar Lik-Wui Tay
- Department of Cardiology, National University Heart Centre, Singapore, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Leonard Leong-Litt Yeo
- Division of Neurology, Department of Medicine, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Eng-Soo Yap
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Haematology-Oncology, National University Cancer Institute, Singapore
| | - Joshua Ping-Yun Loh
- Department of Cardiology, National University Heart Centre, Singapore, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Chen Q, Liu Y, Ding X, Li Q, Qiu F, Wang M, Shen Z, Zheng H, Fu G. Bone marrow mesenchymal stem cell-secreted exosomes carrying microRNA-125b protect against myocardial ischemia reperfusion injury via targeting SIRT7. Mol Cell Biochem 2019; 465:103-114. [PMID: 31858380 PMCID: PMC6955239 DOI: 10.1007/s11010-019-03671-z] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 11/30/2019] [Indexed: 12/15/2022]
Abstract
MicroRNA-125b (miR-125b) reduces myocardial infarct area and restrains myocardial ischemia reperfusion injury (I/R). In this study, we aimed to investigate the effect of bone marrow mesenchymal stem cell (BMSC)-derived exosomes carrying miR-125b on I/R rats. The myocardial I/R model in rats was constructed by ligation of the left anterior descending coronary artery (LAD). Rats were randomly divided into I/R and Sham group. Lv-cel-miR-67 (control) or Lv-miR-125b was transfected into BMSCs. Exosomes were extracted from transfected BMSCs, and separately named BMSC-Exo-67, BMSC-Exo-125b, and BMSC-Exo. MTT assay and flow cytometry were used to detect the viability and apoptosis of I/R myocardium cells, respectively. The expression of cell apoptosis proteins and the levels of inflammatory factors were examined by Western blot and ELISA assay, respectively. The target relationship between miR-125b and SIRT7 was predicted by using StarBase3.0, and was confirmed by using dual-luciferase reporter gene assay. qRT-PCR, immunohistochemistry staining, and Western blot were used to evaluate the expression of SIRT7 in myocardium tissues in I/R rats. BMSC-derived exosomes were successfully isolated and identified by TEM and positive expression of CD9 and CD63. The expression of miR-125b was down-regulated in I/R myocardium tissues and cells. BMSC-Exo-125b significantly up-regulated miR-125b in I/R myocardium cells. The intervention of BMSC-Exo-125b significantly increased the cell viability, decreased the apoptotic ratio, down-regulated Bax and caspase-3, up-regulated Bcl-2, and decreased the levels of IL-1β, IL-6, and TNF-α in I/R myocardium cells. SIRT7 was a target of miR-125b, and BMSC-Exo-125b significantly down-regulated SIRT7 in myocardium cells. In addition, the injection of BMSC-Exo-125b alleviated the pathological damages and down-regulated SIRT7 in myocardium tissues of I/R rats. BMSC-derived exosomes carrying miR-125b protected against myocardial I/R by targeting SIRT7.
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Affiliation(s)
- Qi Chen
- Department of Cardiology, School of Medicine, Sir Run Run Shaw Hospital, Biomedical Research Center, Zhejiang University, No. 3, East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - Yu Liu
- Department of Cardiology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, No. 321, Zhongshan Road, Nanjing, 210008, Jiangsu, China
| | - Xueyan Ding
- Department of Cardiology, Zhejiang Provincial People's Hospital, No. 158, Shangtang Road, Hangzhou, 310014, Zhejiang, China
| | - Qinfeng Li
- Department of Cardiology, School of Medicine, Sir Run Run Shaw Hospital, Biomedical Research Center, Zhejiang University, No. 3, East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - Fuyu Qiu
- Department of Cardiology, School of Medicine, Sir Run Run Shaw Hospital, Biomedical Research Center, Zhejiang University, No. 3, East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - Meihui Wang
- Department of Cardiology, School of Medicine, Sir Run Run Shaw Hospital, Biomedical Research Center, Zhejiang University, No. 3, East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - Zhida Shen
- Department of Cardiology, School of Medicine, Sir Run Run Shaw Hospital, Biomedical Research Center, Zhejiang University, No. 3, East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - Hao Zheng
- Department of Cardiology, Zhejiang Provincial People's Hospital, No. 158, Shangtang Road, Hangzhou, 310014, Zhejiang, China.
| | - Guosheng Fu
- Department of Cardiology, School of Medicine, Sir Run Run Shaw Hospital, Biomedical Research Center, Zhejiang University, No. 3, East Qingchun Road, Hangzhou, 310016, Zhejiang, China.
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Temporal dynamics of immune response following prolonged myocardial ischemia/reperfusion with and without cyclosporine A. Acta Pharmacol Sin 2019; 40:1168-1183. [PMID: 30858476 PMCID: PMC6786364 DOI: 10.1038/s41401-018-0197-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 11/21/2018] [Indexed: 12/19/2022] Open
Abstract
Understanding the dynamics of the immune response following late myocardial reperfusion is critical for the development of immunomodulatory therapy for myocardial infarction (MI). Cyclosporine A (CSA) possesses multiple therapeutic applications for MI, but its effects on the inflammation caused by acute MI are not clear. This study aimed to determine the dynamics of the immune response following myocardial ischemia/reperfusion (I/R) and the effects of CSA in a mouse model of prolonged myocardial ischemia designated to represent the human condition of late reperfusion. Adult C57BL/6 mice were subjected to 90 min of closed-chest myocardial I/R, which induced severe myocardial injury and excessive inflammation in the heart. Multicomponent analysis of the immune response caused by prolonged I/R revealed that the peak of cytokines/chemokines in the systemic circulation was synchronized with the maximal influx of neutrophils and T-cells in the heart 1 day after MI. The peak of cytokine/chemokine secretion in the infarcted heart coincided with the maximal macrophage and natural killer cell infiltration on day 3 after MI. The cellular composition of the mediastinal lymph nodes changed similarly to that of the infarcted hearts. CSA (10 mg/kg/day) given after prolonged I/R impaired heart function, enlarged the resulting scar, and reduced heart vascularization. It did not change the content of immune cells in hearts exposed to prolonged I/R, but the levels of MCP-1 and MIP-1α (hearts) and IL-12 (hearts and serum) were significantly reduced in the CSA-treated group in comparison to the untreated group, indicating alterations in immune cell function. Our findings provide new knowledge necessary for the development of immunomodulatory therapy targeting the immune response after prolonged myocardial ischemia/reperfusion.
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Yan W, Abu-El-Rub E, Saravanan S, Kirshenbaum LA, Arora RC, Dhingra S. Inflammation in myocardial injury: mesenchymal stem cells as potential immunomodulators. Am J Physiol Heart Circ Physiol 2019; 317:H213-H225. [PMID: 31125258 PMCID: PMC6732476 DOI: 10.1152/ajpheart.00065.2019] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 05/13/2019] [Accepted: 05/20/2019] [Indexed: 02/08/2023]
Abstract
Ischemic heart disease is a growing worldwide epidemic. Improvements in medical and surgical therapies have reduced early mortality after acute myocardial infarction and increased the number of patients living with chronic heart failure. The irreversible loss of functional cardiomyocytes puts these patients at significant risk of ongoing morbidity and mortality after their index event. Recent evidence suggests that inflammation is a key mediator of postinfarction adverse remodeling in the heart. In this review, we discuss the cardioprotective and deleterious effects of inflammation and its mediators during acute myocardial infarction. We also explore the role of mesenchymal stem cell therapy to limit secondary injury and promote myocardial healing after myocardial infarction.
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Affiliation(s)
- Weiang Yan
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
- Section of Cardiac Surgery, Department of Surgery, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Ejlal Abu-El-Rub
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Sekaran Saravanan
- Centre for Nanotechnology and Advanced Biomaterials, Department of Bioengineering, SASTRA University , Thanjavur, Tamil Nadu , India
| | - Lorrie A Kirshenbaum
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Rakesh C Arora
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
- Section of Cardiac Surgery, Department of Surgery, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
| | - Sanjiv Dhingra
- Institute of Cardiovascular Sciences, Saint Boniface Hospital Research Centre, Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba , Winnipeg , Canada
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11
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Ali SS, Mohamed SFA, Rozalei NH, Boon YW, Zainalabidin S. Anti-fibrotic Actions of Roselle Extract in Rat Model of Myocardial Infarction. Cardiovasc Toxicol 2019; 19:72-81. [PMID: 30128816 DOI: 10.1007/s12012-018-9478-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Heart failure-associated morbidity and mortality is largely attributable to extensive and unregulated cardiac remodelling. Roselle (Hibiscus sabdariffa) calyces are enriched with natural polyphenols known for antioxidant and anti-hypertensive effects, yet its effects on early cardiac remodelling in post myocardial infarction (MI) setting are still unclear. Thus, the aim of this study was to investigate the actions of roselle extract on cardiac remodelling in rat model of MI. Male Wistar rats (200-300 g) were randomly allotted into three groups: Control, MI, and MI + Roselle. MI was induced with isoprenaline (ISO) (85 mg/kg, s.c) for two consecutive days followed by roselle treatment (100 mg/kg, orally) for 7 days. Isoprenaline administration showed changes in heart weight to body weight (HW/BW) ratio. MI was especially evident by the elevated cardiac injury marker, troponin-T, and histological observation. Upregulation of plasma levels and cardiac gene expression levels of inflammatory cytokines such as interleukin (IL)-6 and IL-10 was seen in MI rats. A relatively high percentage of fibrosis was observed in rat heart tissues with over-expression of collagen (Col)-1 and Col-3 genes following isoprenaline-induced MI. On top of that, cardiomyocyte areas were larger in heart tissues of MI rats with upregulation of atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) gene expression, indicating cardiac hypertrophy. Interestingly, roselle supplementation attenuated elevation of plasma troponin-T, IL-6, IL10, and gene expression level of IL-10. Furthermore, reduction of cardiac fibrosis and hypertrophy were observed. In conclusion, roselle treatment was able to limit early cardiac remodelling in MI rat model by alleviating inflammation, fibrosis, and hypertrophy; hence, the potential application of roselle in early adjunctive treatment to prevent heart failure.
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MESH Headings
- Animals
- Atrial Natriuretic Factor/genetics
- Atrial Natriuretic Factor/metabolism
- Cardiovascular Agents/isolation & purification
- Cardiovascular Agents/pharmacology
- Collagen Type I/genetics
- Collagen Type I/metabolism
- Collagen Type III/genetics
- Collagen Type III/metabolism
- Disease Models, Animal
- Fibrosis
- Heart Ventricles/drug effects
- Heart Ventricles/metabolism
- Heart Ventricles/physiopathology
- Hibiscus/chemistry
- Hypertrophy, Left Ventricular/chemically induced
- Hypertrophy, Left Ventricular/metabolism
- Hypertrophy, Left Ventricular/physiopathology
- Hypertrophy, Left Ventricular/prevention & control
- Inflammation Mediators/blood
- Interleukin-10/blood
- Interleukin-10/genetics
- Interleukin-6/blood
- Interleukin-6/genetics
- Isoproterenol
- Male
- Myocardial Infarction/chemically induced
- Myocardial Infarction/drug therapy
- Myocardial Infarction/metabolism
- Myocardial Infarction/physiopathology
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Natriuretic Peptide, Brain/genetics
- Natriuretic Peptide, Brain/metabolism
- Rats, Wistar
- Troponin T/blood
- Ventricular Function, Left/drug effects
- Ventricular Remodeling/drug effects
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Affiliation(s)
- Shafreena Shaukat Ali
- Biomedical Science, School of Diagnostic Sciences & Applied Health, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Siti Fatimah Azaharah Mohamed
- Biomedical Science, School of Diagnostic Sciences & Applied Health, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Nur Hafiqah Rozalei
- Biomedical Science, School of Diagnostic Sciences & Applied Health, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Yap Wei Boon
- Biomedical Science, School of Diagnostic Sciences & Applied Health, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia
| | - Satirah Zainalabidin
- Biomedical Science, School of Diagnostic Sciences & Applied Health, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia.
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12
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Ren F, Mu N, Gao M, Sun J, Zhang C, Sun X, Li L, Li J, Liu T, Tse G, Dong M. Role of JNK signalling pathway and platelet‑lymphocyte aggregates in myocardial ischemia‑reperfusion injury and the cardioprotective effect of ischemic postconditioning in rats. Mol Med Rep 2018; 18:5237-5242. [PMID: 30320401 DOI: 10.3892/mmr.2018.9545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Accepted: 08/30/2018] [Indexed: 11/06/2022] Open
Abstract
In myocardial ischemia‑reperfusion injury (MIRI), increased activity of the c‑Jun N‑terminal kinase (JNK) pathway and the activation of platelets that leads to the formation of platelet‑leukocyte aggregates (PLAs) have been observed. It was hypothesized that ischemic postconditioning in MIRI exerts cardioprotective effects by altering JNK activity, which in turn leads to reduced PLA levels. A total of 60 rats were randomly divided into 6 groups (n=10 for each group): i) Control; ii) ischemia‑reperfusion injury alone; iii) ischemia‑reperfusion with postconditioning (PostC group), iv) treatment with the JNK inhibitor‑SP600125; v) postC and treatment with anisomycin; and vi) treatment with the JNK activator‑anisomycin. Subsequently, the levels of PLA, infarct size, myocardial injury markers (creatinine kinase‑muscle/brain and troponin I) and were measured. Western blotting was used to determine the protein expression of phosphorylated‑JNK. MIRI led to increased myocardial infarct size that was associated with raised troponin I and creatine kinase‑muscle/brain. At different time points of MIRI, the level of PLA gradually increased. Compared with the injury‑reperfusion group, the level of PLA in the PostC and Inhibitor‑JNK groups was significantly reduced at 60 min and 3 h following reperfusion. MIRI was able to increase the expression of phosphorylated JNK. These effects were significantly reduced by ischemic postC or by treatment with SP600125. By contrast, the addition of anisomycin attenuated these protective effects. JNK is a critical mediator of MIRI. Ischemic postC can reduce the level of PLA during reperfusion by inhibiting the phosphorylation of JNK MAPK, thereby reducing MIRI. Pharmacological inhibition and activation of JNK can improve and reduce cardioprotective effects, respectively. These results explained the mechanism of the cardioprotection of postC and provided novel insight and target for the therapeutic strategy of MIRI.
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Affiliation(s)
- Faxin Ren
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Nan Mu
- Department of Gynaecology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Mingxiao Gao
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Jing Sun
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Chuanhuan Zhang
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Xiaojian Sun
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Liudong Li
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Jun Li
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Tong Liu
- Tianjin Key Laboratory of Ionic‑Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Gary Tse
- Li Ka Shing Institute of Health Sciences, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Mei Dong
- Department of Cardiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
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13
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Hoffman WH, Sharma M, Cihakova D, Talor MV, Rose NR, Mohanakumar T, Passmore GG. Cardiac antibody production to self-antigens in children and adolescents during and following the correction of severe diabetic ketoacidosis. Autoimmunity 2016; 49:188-96. [PMID: 26911924 DOI: 10.3109/08916934.2015.1134509] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Diabetic cardiomyopathy (DC) is an independent phenotype of diabetic cardiovascular disease. The understanding of the pathogenesis of DC in young patients with type 1 diabetes (T1D) is limited. The cardiac insults of diabetic ketoacidosis (DKA) and progression of DC could include development of antibodies (Abs) to cardiac self-antigens (SAgs) such as: myosin (M), vimentin (V) and k-alpha 1 tubulin (Kα1T). The goal of this study is to determine if the insults of severe DKA and its inflammatory cascade are associated with immune responses to SAgs. Development of Abs to the SAgs were determined by an ELISA using sera collected at three time points in relation to severe DKA (pH < 7.2). Results demonstrate significant differences between the development of Abs to VIM and a previously reported diastolic abnormality (DA) during DKA and its treatment and a NDA group at 2-3 months post DKA (p = 0.0452). A significant association is present between T1D duration (<3 years) and Abs to Kα1T (p = 0.0134). Further, Abs to MYO and VIM are associated with inflammatory cytokines. We propose that severe DKA initiates the synthesis of Abs to cardiac SAgs that are involved in the early immunopathogenesis of DC in young patients with T1D.
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Affiliation(s)
- William H Hoffman
- a Department of Pediatrics , Georgia Regents University (Medical College of Georgia) , Augusta , GA , USA
| | - Monal Sharma
- b Department of Surgery , Washington University School of Medicine , St. Louis, MO , USA
| | - Daniela Cihakova
- c Department of Pathology , The Johns Hopkins University School of Medicine, The William H. Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins University Bloomberg School of Public Health , Baltimore , MD , USA
| | - Monica V Talor
- d Department of Pathology , The Johns Hopkins University School of Medicine , Baltimore , MD , USA
| | - Noel R Rose
- c Department of Pathology , The Johns Hopkins University School of Medicine, The William H. Feinstone Department of Molecular Microbiology and Immunology, The Johns Hopkins University Bloomberg School of Public Health , Baltimore , MD , USA
| | - T Mohanakumar
- e Departments of Surgery , Pathology and Immunology, Washington University School of Medicine , St. Louis, MO , USA , and
| | - Gregory G Passmore
- f Medical Laboratory, Imaging and Radiologic Sciences, Georgia Regents University , Augusta , GA , USA
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14
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Somasuntharam I, Yehl K, Carroll SL, Maxwell JT, Martinez MD, Che PL, Brown ME, Salaita K, Davis ME. Knockdown of TNF-α by DNAzyme gold nanoparticles as an anti-inflammatory therapy for myocardial infarction. Biomaterials 2015; 83:12-22. [PMID: 26773660 DOI: 10.1016/j.biomaterials.2015.12.022] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 12/19/2015] [Indexed: 12/16/2022]
Abstract
In this study, we used deoxyribozyme (DNAzyme) functionalized gold nanoparticles (AuNPs) to catalytically silence tumor necrosis factor-α (TNF-α) in vivo as a potential therapeutic for myocardial infarction (MI). Using primary macrophages as a model, we demonstrated 50% knockdown of TNF-α, which was not attainable using Lipofectamine-based approaches. Local injection of DNAzyme conjugated to gold particles (AuNPs) in the rat myocardium yielded TNF-α knockdown efficiencies of 50%, which resulted in significant anti-inflammatory effects and improvement in acute cardiac function following MI. Our results represent the first example showing the use of DNAzyme AuNP conjugates in vivo for viable delivery and gene regulation. This is significant as TNF-α is a multibillion dollar drug target implicated in many inflammatory-mediated disorders, thus underscoring the potential impact of DNAzyme-conjugated AuNPs.
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Affiliation(s)
- Inthirai Somasuntharam
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Suite W200, Atlanta, GA 30322, USA; Division of Cardiology, Emory University School of Medicine, 101 Woodruff Circle Room 319, Atlanta, GA 30322, USA
| | - Kevin Yehl
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA
| | - Sheridan L Carroll
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Suite W200, Atlanta, GA 30322, USA
| | - Joshua T Maxwell
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Suite W200, Atlanta, GA 30322, USA
| | - Mario D Martinez
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Suite W200, Atlanta, GA 30322, USA
| | - Pao-Lin Che
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Suite W200, Atlanta, GA 30322, USA
| | - Milton E Brown
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Suite W200, Atlanta, GA 30322, USA; Division of Cardiology, Emory University School of Medicine, 101 Woodruff Circle Room 319, Atlanta, GA 30322, USA
| | - Khalid Salaita
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA 30322, USA.
| | - Michael E Davis
- Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 1760 Haygood Drive, Suite W200, Atlanta, GA 30322, USA; Division of Cardiology, Emory University School of Medicine, 101 Woodruff Circle Room 319, Atlanta, GA 30322, USA.
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15
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Liu SQ, Ma XL, Qin G, Liu Q, Li YC, Wu YH. Trans-system mechanisms against ischemic myocardial injury. Compr Physiol 2015; 5:167-92. [PMID: 25589268 DOI: 10.1002/cphy.c140026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A mammalian organism possesses a hierarchy of naturally evolved protective mechanisms against ischemic myocardial injury at the molecular, cellular, and organ levels. These mechanisms comprise regional protective processes, including upregulation and secretion of paracrine cell-survival factors, inflammation, angiogenesis, fibrosis, and resident stem cell-based cardiomyocyte regeneration. There are also interactive protective processes between the injured heart, circulation, and selected remote organs, defined as trans-system protective mechanisms, including upregulation and secretion of endocrine cell-survival factors from the liver and adipose tissue as well as mobilization of bone marrow, splenic, and hepatic cells to the injury site to mediate myocardial protection and repair. The injured heart and activated remote organs exploit molecular and cellular processes, including signal transduction, gene expression, cell proliferation, differentiation, migration, mobilization, and/or extracellular matrix production, to establish protective mechanisms. Both regional and trans-system cardioprotective mechanisms are mediated by paracrine and endocrine messengers and act in coordination and synergy to maximize the protective effect, minimize myocardial infarction, and improve myocardial function, ensuring the survival and timely repair of the injured heart. The concept of the trans-system protective mechanisms may be generalized to other organ systems-injury in one organ may initiate regional as well as trans-system protective responses, thereby minimizing injury and ensuring the survival of the entire organism. Selected trans-system processes may serve as core protective mechanisms that can be exploited by selected organs in injury. These naturally evolved protective mechanisms are the foundation for developing protective strategies for myocardial infarction and injury-induced disorders in other organ systems.
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Affiliation(s)
- Shu Q Liu
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois Department of Emergency Medicine, Thomas Jefferson University Hospitals, Philadelphia, Pennsylvania Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois Carbohydrate and Lipid Metabolism Research Laboratory, College of Life Science and Technology, Dalian University, Dalian, China Department of Medicine, Division of Biological Sciences, The University of Chicago, Chicago, Illinois
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16
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Role of vascular inflammation in coronary artery disease: potential of anti-inflammatory drugs in the prevention of atherothrombosis. Inflammation and anti-inflammatory drugs in coronary artery disease. Am J Cardiovasc Drugs 2015; 15:1-11. [PMID: 25369900 DOI: 10.1007/s40256-014-0094-z] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Coronary artery disease (CAD) and acute myocardial infarction (AMI) are inflammatory pathologies, involving interleukins (ILs), such as IL-1β, IL-6 and tumor necrosis factor (TNF)-α, and acute phase proteins production, such as for C reactive protein (CRP). The process begins with retention of low-density lipoprotein (LDL) and its oxidation inside the intima, with the formation of the "foam cells." Toll-like receptors and inflamassomes participate in atherosclerosis formation, as well as in the activation of the complement system. In addition to innate immunity, adaptive immunity is also associated with atherosclerosis through antigen-presenting cells, T and B lymphocytes. AMI also increases the expression of some ILs and promotes macrophage and lymphocyte accumulation. Reperfusion increases the expression of anti-inflammatory ILs (such as IL-10) and generates oxygen free radicals. Although CAD and AMI are inflammatory disorders, the only drugs with anti-inflammatory effect so far widely used in ischemic heart disease are aspirin and statins. Some immunomodulatory or immunosuppressive promising therapies, such as cyclosporine and colchicine, may have benefits in CAD. Methotrexate also has potential cardioprotective anti-inflammatory effects, through increased adenosine levels. The TETHYS trial (The Effects of mETHotrexate Therapy on ST Segment Elevation MYocardial InfarctionS trial) will evaluate low-dose methotrexate in ST elevation AMI. The CIRT (Cardiovascular Inflammation Reduction Trial), in turn, will evaluate low-dose methotrexate in patients with a high prevalence of subclinical vascular inflammation. The CANTOS (The Canakinumab Antiinflammatory Thrombosis Outcomes Study) will evaluate canakinumab in patients with CAD and persistently elevated CRP. The blockage of other potential targets, such as the IL-6 receptor, CC2 chemokine receptor and CD20, could bring benefits in CAD.
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17
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Ben-Mordechai T, Palevski D, Glucksam-Galnoy Y, Elron-Gross I, Margalit R, Leor J. Targeting macrophage subsets for infarct repair. J Cardiovasc Pharmacol Ther 2014; 20:36-51. [PMID: 24938456 DOI: 10.1177/1074248414534916] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Macrophages are involved in every cardiovascular disease and are an attractive therapeutic target. Macrophage activation is complex and can be either beneficial or deleterious, depending upon its mode of action, its timing, and its duration. An important macrophage characteristic is its plasticity, which enables it to switch from one subset to another. Macrophages, which regulate healing and repair after myocardial infarction, have become a major target for both treatment and diagnosis (theranostic). The aim of the present review is to describe the recent discoveries related to targeting and modulating of macrophage function to improve infarct repair. We will briefly review macrophage polarization, plasticity, heterogeneity, their role in infarct repair, regeneration, and cross talk with mesenchymal cells. Particularly, we will focus on the potential of macrophage targeting in situ by liposomes. The ability to modulate macrophage function could delineate pathways to reactivate the endogenous programs of myocardial regeneration. This will eventually lead to development of small molecules or biologics to enhance the endogenous programs of regeneration and repair.
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Affiliation(s)
- Tamar Ben-Mordechai
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
| | - Dahlia Palevski
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
| | - Yifat Glucksam-Galnoy
- Department of Biochemistry and Molecular Biology, the George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Inbar Elron-Gross
- Department of Biochemistry and Molecular Biology, the George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Rimona Margalit
- Department of Biochemistry and Molecular Biology, the George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Jonathan Leor
- Sackler Faculty of Medicine, Neufeld Cardiac Research Institute, Tel Aviv University, Tel Aviv, Israel Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel-hashomer, Israel Sheba Center for Regenerative Medicine, Stem Cell, and Tissue Engineering, Tel-Hashomer, Israel
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18
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Hong J, Ku SH, Lee MS, Jeong JH, Mok H, Choi D, Kim SH. Cardiac RNAi therapy using RAGE siRNA/deoxycholic acid-modified polyethylenimine complexes for myocardial infarction. Biomaterials 2014; 35:7562-73. [PMID: 24917027 DOI: 10.1016/j.biomaterials.2014.05.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 05/12/2014] [Indexed: 10/25/2022]
Abstract
Inflammatory response in myocardial ischemia-reperfusion injury plays a critical role in ventricular remodeling. To avoid deleterious effects of overwhelming inflammation, we blocked the expression of receptor for advanced glycation end-products (RAGE), a key mediator of the local and systemic inflammatory responses, via RNAi mechanism. Herein, a facial amphipathic deoxycholic acid-modified low molecular weight polyethylenimine (DA-PEI) was used as a siRNA delivery carrier to myocardium. The DA-PEI conjugate formed a stable complex with siRNA via electrostatic and hydrophobic interactions. The siRAGE/DA-PEI formulation having negligible toxicity could enhance intracellular delivery efficiency and successfully suppress RAGE expression both in vitro and in vivo. Furthermore, the cardiac administration of siRAGE/DA-PEI reduced apoptosis and inflammatory cytokine release, subsequently led to attenuation of left ventricular remodeling in rat myocardial infarction model. The potential therapeutic effects of RAGE gene silencing on myocardial ischemia-reperfusion injury may suggest that the siRAGE/DA-PEI delivery system can be considered as a promising strategy for treating myocardial infarction.
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Affiliation(s)
- Jueun Hong
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University Health System, Seoul 120-752, Republic of Korea; Korea Testing & Research Institue (KTR), 155 Beodeunaru-ro, Yeongdeungpo-gu, Seoul 150-038, Republic of Korea
| | - Sook Hee Ku
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul 136-791, Republic of Korea
| | - Min Sang Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Ji Hoon Jeong
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul 136-791, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Hyejung Mok
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Republic of Korea
| | - Donghoon Choi
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University Health System, Seoul 120-752, Republic of Korea.
| | - Sun Hwa Kim
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Seoul 136-791, Republic of Korea.
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Diosgenin attenuates inflammatory response induced by myocardial reperfusion injury: role of mitochondrial ATP-sensitive potassium channels. J Physiol Biochem 2014; 70:425-32. [PMID: 24535716 DOI: 10.1007/s13105-014-0320-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Accepted: 02/03/2014] [Indexed: 12/11/2022]
Abstract
Reperfusion injury is one of the main reasons of cardiac disease morbidity. Phytopharmaceuticals are gaining importance in modern medicine of cardioprotection because of their multiplex capacity. The aim of this study was to investigate the effect of diosgenin on the inflammatory response induced by myocardial ischemia and reperfusion injury and the role of mitochondrial ATP-sensitive potassium (mitoKATP) channels in this regard. Wistar rats (250-300 g) were used in this study. The Langendorff-perfused hearts of animals were subjected to a 30-min global ischemia followed by a 90-min reperfusion. The lactate dehydrogenase (LDH) release was measured by spectrophotometry. The levels of inflammatory mediators tumor necrosis factor-alpha (TNF-α), interleukin-1beta (IL-1β), and IL-6 in the supernatant of heart's left ventricle were measured using an enzyme-linked immunosorbent assay rat specific ELISA kit. The LDH release into the coronary effluent during reperfusion was significantly decreased, and cardiac contractility significantly improved by diosgenin preadministration as compared with those of control or Cremophor-EL (solvent of diosgenin) groups (398 ± 48 vs. 665 ± 65 or 650 ± 73 ml/min) (P < 0.01). Administration of diosgenin before the main ischemia significantly reduced the levels of IL-6 (P < 0.05), IL-1β, and TNF-α (P < 0.01) in the reperfusion phase of diosgenin-treated hearts as compared with untreated control hearts. Inhibition of mitoKATP channels by 5-hydroxydecanoate significantly reverses the cardioprotective effects of diosgenin (P < 0.05). The findings of the present study indicate that preconditioning with diosgenin may induce cardioprotective effect against reperfusion injury through reducing the production of inflammatory mediators and activating the mitoKATP channels.
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20
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Correlations between severity of coronary atherosclerosis and persistent elevation of circulating C-reactive protein levels 30 days after an acute myocardial infarction. ACTA ACUST UNITED AC 2014. [DOI: 10.2478/rrlm-2014-0005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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22
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Research Spotlight: Functionalized nanoparticles for future cardiovascular medicine. Ther Deliv 2013; 4:1353-7. [DOI: 10.4155/tde.13.102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
All research investment has the goal of improving quality of life and health status. In recent years, the emerging technologies in nanomedicine research provide us a new frontier in the fight against human disease. By taking advantage of the unique physicochemical properties of nanoparticles (NPs), nanomedicine where drugs are blended into nanomaterials readily offers a wide range of applications in the tracing, diagnosis and treatment of disease. Although the application of therapeutic NPs is predominantly for cancer treatment, growing evidence has demonstrated the feasibility and potency of utilizing NPs for cardiovascular disease therapy. However, more consideration is required in this aspect due to limitations such as unfavorable particle retention in the contractile heart and the lack of cardiomyocyte markers for targeting.
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Bai Y, Hu L, Wu J, Gu Y, Li L, Gao B, Jiang H. Effects of intravenous diltiazem in a rat model of experimental coronary thrombotic microembolism. Exp Ther Med 2013; 6:873-882. [PMID: 24137281 PMCID: PMC3797315 DOI: 10.3892/etm.2013.1263] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 08/05/2013] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to assess the feasibility of evaluating the therapeutic effects of intravenous diltiazem in a newly established rat model of coronary thrombotic micro-embolism (CME). CME was induced by injecting 0.199 ml saline containing 5 mg of automicrothrombotic particulates (∼10 μm) into the aorta of Sprague Dawley rats. The injection was carried out over 10 sec using a tuberculin syringe with a 28-gauge needle. The CME model rats were randomly divided into untreated (CME, n=38) and diltiazem-treated (CME+DIL, n=38) groups. Diltiazem (1 mg/ml, 50 μg/min/kg) was intravenously injected using an infusion pump through the tail vein for 175 min, 5 min following the injection of the automicrothrombotic particulates. Hemodynamic measurements, echocardiography and pathohistological examinations were performed at various time-points (3 h, 24 h and 7 and 28 days) postoperatively. Arteriolar thrombosis, multifocal myocardial necrosis, inflammatory cell infiltration with markedly increased myocardial tumor necrosis factor α (TNF-α) and interleukin-6 (IL-6) expression, reduced left ventricular (LV) systolic function and increased plasma von Willebrand factor (vWF), endothelin-1 (ET-1) and serum c-troponin I (c-TnI) levels (indicating vascular endothelial injury and myocardial necrosis) were observed in the CME model rats. These pathological responses in CME rats were partly attenuated by intravenous diltiazem treatment. The present CME model is suitable for evaluating the therapeutic effects of intravenous diltiazem; intravenous diltiazem treatment significantly improved cardiac function through alleviating inflammatory responses and microvascular thrombotic injury in this rat model of CME.
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Affiliation(s)
- Yupeng Bai
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060
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Value of C-reactive protein in predicting left ventricular remodelling in patients with a first ST-segment elevation myocardial infarction. Mediators Inflamm 2012; 2012:250867. [PMID: 22973074 PMCID: PMC3438801 DOI: 10.1155/2012/250867] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Revised: 07/07/2012] [Accepted: 07/21/2012] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVE To assess the value of C-reactive protein (CRP) in predicting postinfarct left ventricular remodelling (LVR). METHODS We measured in-hospital plasma CRP concentrations in patients with a first ST-segment elevation myocardial infarction (STEMI). RESULTS LVR was present at 6 months in 27.8% of 198 patients. CRP concentration rose during the first 24 h, mainly in LVR group. The prevalence of LVR was higher in patients from the highest quartile of CRP concentrations at 24 h as compared to those from any other quartile (odds ratio (OR) 3.48, 95% confidence interval (95% CI) 1.76-6.88). Multivariate analysis identified CRP concentration at 24 h (OR for a 10 mg/L increase 1.29, 95% CI 1.04-1.60), B-type natriuretic peptide at discharge (OR for a 100 pg/mL increase 1.21, 95% CI 1.05-1.39), body mass index (OR for a 1 kg/m(2) increase 1.10, 95% CI 1.01-1.21), and left ventricular end-diastolic volume (OR for a 1 mL increase 0.98, 95% CI 0.96-0.99) as independent predictors of LVR. The ROC analysis revealed a limited discriminative value of CRP (area under the curve 0.61; 95% CI 0.54-0.68) in terms of LVR prediction. CONCLUSIONS Measurement of CRP concentration at 24 h after admission possesses a significant but modest value in predicting LVR after a first STEMI.
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Alam SR, Shah ASV, Richards J, Lang NN, Barnes G, Joshi N, MacGillivray T, McKillop G, Mirsadraee S, Payne J, Fox KAA, Henriksen P, Newby DE, Semple SIK. Ultrasmall superparamagnetic particles of iron oxide in patients with acute myocardial infarction: early clinical experience. Circ Cardiovasc Imaging 2012; 5:559-65. [PMID: 22875883 DOI: 10.1161/circimaging.112.974907] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Inflammation following acute myocardial infarction (MI) has detrimental effects on reperfusion, myocardial remodelling, and ventricular function. Magnetic resonance imaging using ultrasmall superparamagnetic particles of iron oxide can detect cellular inflammation in tissues, and we therefore explored their role in acute MI in humans. METHODS AND RESULTS Sixteen patients with acute ST-segment elevation MI were recruited to undergo 3 sequential magnetic resonance scans within 5 days of admission at baseline, 24 and 48 hours following no infusion (controls; n=6) or intravenous infusion of ultrasmall superparamagnetic particles of iron oxide (n=10; 4 mg/kg). T2*-weighted multigradient-echo sequences were acquired and R2* values were calculated for specific regions of interest. In the control group, R2* values remained constant in all tissues across all scans with excellent repeatability (bias of -0.208 s(-1), coefficient of repeatability of 26.96 s(-1); intraclass coefficient 0.989). Consistent with uptake by the reticuloendothelial system, R2* value increased in the liver (84±49.5 to 319±70.0 s(-1); P<0.001) but was unchanged in skeletal muscle (54±8.4 to 67.0±9.5 s(-1); P>0.05) 24 hours after administration of ultrasmall superparamagnetic particles of iron oxide. In the myocardial infarct, R2* value increased from 41.0±12.0 s(-1) (baseline) to 155±45.0 s(-1) (P<0.001) and 124±35.0 s(-1) (P<0.05) at 24 and 48 hours, respectively. A similar but lower magnitude response was seen in the remote myocardium, where it increased from 39±3.2 s(-1) (baseline) to 80±14.9 s(-1) (P<0.001) and 67.0±15.7 s(-1) (P<0.05) at 24 and 48 hours, respectively. CONCLUSIONS Following acute MI, uptake of ultrasmall superparamagnetic particles of iron oxide occurs with the infarcted and remote myocardium. This technique holds major promise as a potential method for assessing cellular myocardial inflammation and left ventricular remodelling, which may have a range of applications in patients with MI and other inflammatory cardiac conditions.
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Affiliation(s)
- Shirjel R Alam
- Centre of Cardiovascular Science, Clinical Research Imaging Centre, Edinburgh, UK.
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Swiatkiewicz I, Kozinski M, Magielski P, Gierach J, Fabiszak T, Kubica A, Sukiennik A, Navarese EP, Odrowaz-Sypniewska G, Kubica J. Usefulness of C-reactive protein as a marker of early post-infarct left ventricular systolic dysfunction. Inflamm Res 2012; 61:725-34. [PMID: 22446726 PMCID: PMC3375005 DOI: 10.1007/s00011-012-0466-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 02/28/2012] [Accepted: 03/08/2012] [Indexed: 01/20/2023] Open
Abstract
Objective To assess the usefulness of in-hospital measurement of C-reactive protein (CRP) concentration in comparison to well-established risk factors as a marker of post-infarct left ventricular systolic dysfunction (LVSD) at discharge. Materials and methods Two hundred and four consecutive patients with ST-segment-elevation myocardial infarction (STEMI) were prospectively enrolled into the study. CRP plasma concentrations were measured before reperfusion, 24 h after admission and at discharge with an ultra-sensitive latex immunoassay. Results CRP concentration increased significantly during the first 24 h of hospitalization (2.4 ± 1.9 vs. 15.7 ± 17.0 mg/L; p < 0.001) and persisted elevated at discharge (14.7 ± 14.7 mg/L), mainly in 57 patients with LVSD (2.4 ± 1.8 vs. 25.0 ± 23.4 mg/L; p < 0.001; CRP at discharge 21.9 ± 18.6 mg/L). The prevalence of LVSD was significantly increased across increasing tertiles of CRP concentration both at 24 h after admission (13.2 vs. 19.1 vs. 51.5 %; p < 0.0001) and at discharge (14.7 vs. 23.5 vs. 45.6 %; p < 0.0001). Multivariate analysis demonstrated CRP concentration at discharge to be an independent marker of early LVSD (odds ratio of 1.38 for a 10 mg/L increase, 95 % confidence interval 1.01–1.87; p < 0.04). Conclusion Measurement of CRP plasma concentration at discharge may be useful as a marker of early LVSD in patients after a first STEMI.
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Affiliation(s)
- Iwona Swiatkiewicz
- Department of Cardiology and Internal Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, 9 Sklodowskiej-Curie Street, 85-094 Bydgoszcz, Poland.
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Palee S, Weerateerangkul P, Surinkeaw S, Chattipakorn S, Chattipakorn N. Effect of rosiglitazone on cardiac electrophysiology, infarct size and mitochondrial function in ischaemia and reperfusion of swine and rat heart. Exp Physiol 2011; 96:778-89. [PMID: 21666037 DOI: 10.1113/expphysiol.2011.057885] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Rosiglitazone, a peroxisome proliferator-activated receptor γ agonist, has been used to treat type 2 diabetes. Despite debates regarding its cardioprotection, the effects of rosiglitazone on cardiac electrophysiology are still unclear. This study determined the effect of rosiglitazone on ventricular fibrillation (VF) incidence, VF threshold (VFT), defibrillation threshold (DFT) and mitochondrial function during ischaemia and reperfusion. Twenty-six pigs were used. In each pig, either rosiglitazone (1 mg kg(-1)) or normal saline solution was administered intravenously for 60 min. Then, the left anterior descending coronary artery was ligated for 60 min and released to promote reperfusion for 120 min. The cardiac electrophysiological parameters were determined at the beginning of the study and during the ischaemia and reperfusion periods. The heart was removed, and the area at risk and infarct size in each heart were determined. Cardiac mitochondria were isolated for determination of mitochondrial function. Rosiglitazone did not improve the DFT and VFT during the ischaemia-reperfusion period. In the rosiglitazone group, the VF incidence was increased (58 versus 10%) and the time to the first occurrence of VF was decreased (3 ± 2 versus 19 ± 1 min) in comparison to the vehicle group (P < 0.05). However, the infarct size related to the area at risk in the rosiglitazone group was significantly decreased (P < 0.05). In the cardiac mitochondria, rosiglitazone did not alter the level of production of reactive oxygen species and could not prevent mitochondrial membrane potential changes. Rosiglitazone increased the propensity for VF, and could neither increase defibrillation efficacy nor improve cardiac mitochondrial function.
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Affiliation(s)
- Siripong Palee
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
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Weaver JC, Rees D, Prasan AM, Ramsay DD, Binnekamp MF, McCrohon JA. Grade 3 ischemia on the admission electrocardiogram is associated with severe microvascular injury on cardiac magnetic resonance imaging after ST elevation myocardial infarction. J Electrocardiol 2011; 44:49-57. [DOI: 10.1016/j.jelectrocard.2010.09.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Indexed: 10/18/2022]
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Gu Y, Bai Y, Wu J, Hu L, Gao B. Establishment and characterization of an experimental model of coronary thrombotic microembolism in rats. THE AMERICAN JOURNAL OF PATHOLOGY 2010; 177:1122-30. [PMID: 20651237 DOI: 10.2353/ajpath.2010.090889] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
To establish a model of coronary thrombotic microembolism in rats, either automicrothrombotic particulates (CM group) or saline control (SHAM group) was injected into temporarily clamped aortas of male Sprague-Dawley rats. After automicrothrombotic particulate injection, serum c-troponin I and von Willebrand factor levels, the no-flow area as evaluated by Thioflavin S, myocardial leukocyte infiltration levels, myocardial expressions of tumor necrosis factor alpha and interleukin-6, the percentage of arterioles obstructed by thrombosis, and myocardial fibrosis were all significantly increased whereas cardiac function as evaluated by echocardiography and hemodynamic measurements were significantly reduced compared with the sham group. Thus, aortic automicrothrombotic particulate injection could induce coronary microembolism in rats, and this model could be of value in improving the understanding of pathophysiology of coronary microembolism.
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Affiliation(s)
- Ye Gu
- Department of Cardiology, Puai Hospital, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
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Henning RJ, Shariff M, Eadula U, Alvarado F, Vasko M, Sanberg PR, Sanberg CD, Delostia V. Human cord blood mononuclear cells decrease cytokines and inflammatory cells in acute myocardial infarction. Stem Cells Dev 2009; 17:1207-19. [PMID: 18393684 DOI: 10.1089/scd.2008.0023] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We investigated whether human umbilical cord blood mononuclear cells (HUCBC), which contain hematopoietic and mesenchymal progenitor cells, can limit myocardial cytokine expression and inflammatory cell infiltration in acute myocardial infarction. We permanently ligated the left coronary artery of rats and injected into the myocardium either Isolyte or 4 x 10(6) HUCBC in Isolyte and measured myocardial cytokines with antibody arrays at 2, 6, 12, 24, and 72 hours after infarction. We then measured with flow cytometry myocardial macrophages, neutrophils and lymphocytes at 12, 24, and 72 hours after infarctions in rats treated with either intramyocardial Isolyte or 4 x 10(6) HUCBC. In the Isolyte-treated hearts, between 2 and 12 hours after myocardial infarction, tumor necrosis factor-alpha increased from 6.7 +/- 0.9% to 52.3 +/- 4.7%, monocyte chemoattract protein increased from 9.5 +/- 1.2% to 39.8 +/- 2.1%, fractalkine increased from 11 +/- 1.5% to 28.1 +/- 1.3%, ciliary neurotrophic factor increased from 12.1 +/- 0.02% to 25.9 +/- 1.1%, macrophage inflammatory protein increased from 10.3 +/- 1.5% to 23.9.0 +/- 1.4%, interferon-gamma increased from 8.7 +/- 0.4% to 26.0 +/- 1.6%, interleukin-1beta increased from 6.1 +/- 0.04% to 19.0 +/- 1.2%, and IL-4 increased from 5.9 +/- 0.03% to 15 +/- 1.5% (all p < 0.001 compared with controls). The concentrations of fractalkine remained significantly increased at 72 hours after acute infarction. In contrast, the myocardial concentrations of these cytokines did not significantly change in HUCBC treated hearts at 2, 6, 12, 24, or 72 hours after infarction. The percentage of neutrophils increased from 0.04 +/- 0.2%/50,000 heart cells in the controls to 5.3 +/- 1.2%/50,000 heart cells 12 hours after infarction in Isolyte-treated hearts but averaged only 1.3 +/- 0.7%/50,000 heart cells in HUCBC treated hearts (p < 0.02). Thereafter, the percentages of neutrophils rapidly decreased at 24 and at 72 hours after infarction and averaged 0.6 +/- 0.2%/50,000 heart cells at 72 hours after infarction in Isolyte-treated hearts in contrast to 0.2 +/- 0.1%/50,000 cells in HUCBC hearts (p < 0.05). Moreover, the percentages of neutrophils at 24 and 72 hours in HUCBC hearts were not significantly different from controls. At 24 hours post infarction, the percentage of CD3 and CD4 lymphocytes were 10.7 +/- 1.4% and 6.3 +/- 1.1%/50,000 cells in Isolyte hearts in comparison with only 4.9 +/- 0.8% and 2.9 +/- 0.5% in HUCBC hearts (p < 0.005 for Isolyte versus HUCBC). The percentage of CD11b macrophages was 2.8 +/- 0.3% in Isolyte hearts and 1.9 +/- 0.2% in HUCBC treated hearts (p < 0.05). At 72 hours after infarction, the percentage of CD3 and CD4 lymphocytes averaged 8.0 +/- 1.1% and 5.1 +/- 0.8%/50,000 heart cells in Isolyte hearts in comparison with only 4.1 +/- 0.5% and 2.3 +/- 0.4%/50,000 heart cells in the HUCBC treated infarctions (p < 0.005). Left ventricular infarct sizes in Isolyte-treated hearts at 72 hours post infarction averaged 15.7 +/- 1.4% of the left ventricular muscle area in contrast to HUCBC treated infarctions that averaged 6.9 +/- 1.4% of the left ventricular muscle area (p < 0.02). Moreover in rats followed for 2 months post infarction, the LV ejection fractions decreased to 65.4 +/- 1.9% and 69.1 +/- 1.9% at 1 and 2 months after infarction in Isolyte-treated hearts and were significantly different from HUCBC treated hearts that averaged 72.1 +/- 1.3% and 75.7 +/- 1.4% (both p < 0.02). The present experiments suggest that an important mechanism whereby HUCBC limit infarct size and improve left ventricular ejection fraction is by significantly limiting inflammatory cytokines and inflammatory cells in infarcted myocardium.
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Affiliation(s)
- Robert J Henning
- Center for Cardiovascular Research, Department of Medicine of the James A. Haley Medical Center, University of South Florida College of Medicine, Tampa, Florida 33612, USA.
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Marfella R, Di Filippo C, Portoghese M, Siniscalchi M, Martis S, Ferraraccio F, Guastafierro S, Nicoletti G, Barbieri M, Coppola A, Rossi F, Paolisso G, D'Amico M. The ubiquitin-proteasome system contributes to the inflammatory injury in ischemic diabetic myocardium: the role of glycemic control. Cardiovasc Pathol 2009; 18:332-45. [PMID: 19144543 DOI: 10.1016/j.carpath.2008.09.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2008] [Revised: 08/30/2008] [Accepted: 09/30/2008] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Because the ubiquitin-proteasome pathway (UPS) is required for activation of nuclear factor kappa beta (NFkB), a transcription factor that regulates inflammatory genes, we evaluated the UPS activity, NFkB activation, and tumor necrosis factor-alpha (TNF-alpha), a proinflammatory cytokine, in ischemic specimens of diabetic myocardium and relate them to the glycemic control (HbA(1c)), oxidative stress (nitrotyrosine, a modified amino acid produced by reactive O(2)), and cardiac outcome (echocardiographic parameters). Moreover, the role of UPS, NFkB, and TNF-alpha in the cardiac tissue injury of acute ischemia/reperfusion (I/R) was evaluated in streptozotocin (STZ)-hyperglycemic rats. Finally, this study aimed to elucidate whether an intervention on UPS with bortezomib, an inhibitor of UPS, may counteract the extensive myocardial infarction and increased inflammatory reaction into the hyperglycemic myocardium. METHODS Ventricular biopsy specimens from 16 nondiabetic and 18 type 2 diabetic patients presenting with unstable angina who underwent coronary artery bypass were collected during coronary bypass surgery. Ejection fraction (EF); myocardial performance index (MPI), which measures both systolic and diastolic function, immunostaining, and cardiac levels of nitrotyrosine; UPS activity; NFkB; and TNF-alpha were investigated in both ischemic human myocardium and heart tissue from STZ-hyperglycemic rats subject to a myocardial ischemia/reperfusion procedure. RESULTS We found that diabetic patients had higher MPI (P<.041) and reduced EF (P<.008) compared with nondiabetic patients. Diabetic specimens had higher nitrotyrosine, UPS activity, NFkB, and TNF-alpha levels compared with nondiabetic patients (P<.001). This was mirrored by consistently high levels of UPS and inflammatory markers in STZ-infarcted hearts, associated with high myocardial damage. In contrast, lesions from normoglycemic animals as well as from hyperglycemic rats treated with bortezomib showed low levels of ubiquitin-proteasome activity, inflammation, and myocardial damage (P<.01). CONCLUSIONS By contributing to the increased inflammation, the UPS overactivity may enhance the risk of complication during myocardial ischemia in diabetic patients.
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Affiliation(s)
- Raffaele Marfella
- Department of Geriatrics and Metabolic Diseases, Second University of Naples, Naples, Italy.
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Stakos DA, Kotsianidis I, Tziakas DN, Spanoudakis E, Chalikias G, Bourikas G, Katsaris G, Boudoulas H. Leukocyte activation after coronary stenting in patients during the subacute phase of a previous ST-elevation myocardial infarction. Coron Artery Dis 2007; 18:105-10. [PMID: 17301601 DOI: 10.1097/mca.0b013e328011c094] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To study leukocyte activation after percutaneous coronary intervention in patients with previous ST elevation myocardial infarction. METHODS Neutrophil and monocyte activation (by flow cytometric assessment of the surface expression of CD11b and CD62L adhesion molecules) was assessed in 39 patients during the subacute period of a previous ST elevation myocardial infarction initially treated with fibrinolytic agents, before and after diagnostic coronary angiography (coronary angiography control phase) as well as before and after stent implantation (percutaneous coronary intervention phase). Simultaneous evaluation of C-reactive protein (C-reactive protein immonoturbidimetry) and plasma cytokine levels (interleukins-1, -6, -10 and tumor necrosis alpha by immunoassay) was also performed. To track the earliest detectable change in the first few minutes after stent deployment, all measurements were performed before and 60 min after the procedures. RESULTS CD11b expression increased 1 h after stent deployment in neutrophils (P<0.0001) and monocytes (P<0.0001). A comparable increase, however, was also observed after coronary angiography (neutrophils, P=0.03; monocytes, P=0.01), although the increase of CD11b expression was greater after percutaneous coronary intervention on both neutrophils (90 vs. 40%, P=0.014) and monocytes (65 vs. 33%, P=0.04). CD62L expression decreased significantly after percutaneous coronary intervention (neutrophils, P=0.01; monocytes, P=0.006), but remained unchanged after coronary angiography. Plasma cytokine and C-reactive protein concentrations did not change after the procedures. CONCLUSION CD62L appears to be a specific and reliable early cellular biomarker of leukocyte activation after percutaneous coronary intervention, when this procedure is performed in patients with previous ST elevation myocardial infarction. Whether this marker represents also a potential predictor of future events and/or restenosis in this group of patients remains to be defined.
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Affiliation(s)
- Dimitrios A Stakos
- Cardiology Department, Democritus University of Thrace, Alexandroupolis, and 2nd Cardiology Department, Papanikolaou General Hospital, Thessaloniki, Greece.
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