1
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Li M, Nguyen L, Ferens D, Spizzo I, Wang Y, Denton KM, Del Borgo M, Kulkarni K, Aguilar MI, Qin CH, Samuel CS, Gaspari TA, Widdop RE. Novel AT 2R agonist, β-Pro 7Ang III, is cardio- and vaso-protective in diabetic spontaneously hypertensive rats. Biomed Pharmacother 2023; 165:115238. [PMID: 37536036 DOI: 10.1016/j.biopha.2023.115238] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/15/2023] [Accepted: 07/25/2023] [Indexed: 08/05/2023] Open
Abstract
Stimulation of the angiotensin II type 2 receptor (AT2R) evokes protective effects in various cardiovascular diseases. Thus, this study aimed to investigate the effects of AT2R stimulation, with or without AT1R blockade, in a model of hypertension with concomitant type 1 diabetes mellitus (T1DM). Spontaneously hypertensive rats (SHRs) were given either citrate or a single dose of streptozotocin (STZ; 55 mg/kg, i.p.) to induce diabetes. After 4 weeks of diabetes, animals were administered either a vehicle (saline), AT2R agonist, β-Pro7Ang III (0.1 mg/kg/day via osmotic mini-pump), AT1R blocker, candesartan (2 mg/kg/day via drinking water), or a combination of both for a further 8 weeks. β-Pro7Ang III treatment had no effect on blood pressure, but attenuated the significant increase in cardiac interstitial collagen and protein expression of fibrotic and inflammatory markers, and superoxide levels that was evident in diabetic SHRs. These effects were not observed with candesartan, despite its blood pressure lowering effects. Although β-Pro7Ang III had no effect on aortic fibrosis, it significantly attenuated MCP-1 protein expression and superoxide levels when compared to both the non-diabetic and diabetic SHRs, to a similar extent as candesartan. In both the heart and vasculature, the effects of β-Pro7Ang III in combination with candesartan were similar to those of β-Pro7Ang III alone, and superior to candesartan alone. It was concluded that in hypertension with concomitant diabetes, AT2R stimulation with a novel ligand alone, or in combination with AT1R blockade, improved the cardiac and vascular structural changes that were strongly associated with inflammation and oxidative stress, independent of blood pressure regulation.
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Affiliation(s)
- Mandy Li
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Levi Nguyen
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Dorota Ferens
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Iresha Spizzo
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Yan Wang
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Kate M Denton
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Physiology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Mark Del Borgo
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Ketav Kulkarni
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Marie-Isabel Aguilar
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Chengxue Helena Qin
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Chrishan S Samuel
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Tracey A Gaspari
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia
| | - Robert E Widdop
- Cardiovascular Disease Program, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia; Department of Pharmacology, Monash Biomedicine Discovery Institute (BDI), Monash University, Clayton, VIC, Australia.
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2
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Jin B, Wang J, Chen Y, Zuo W, Hong B, Li J, Huang F, Zhang M, Wang Y. Focal adhesion kinase induces cardiac remodeling through NF-κB-mediated inflammatory responses in diabetic cardiomyopathy. Int Immunopharmacol 2023; 120:110280. [PMID: 37216798 DOI: 10.1016/j.intimp.2023.110280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/11/2022] [Accepted: 05/01/2023] [Indexed: 05/24/2023]
Abstract
BACKGROUND Hyperglycemia-induced chronic inflammation is a crucial risk factor that causes undesirable cardiac alternations in diabetic cardiomyopathy (DCM). Focal adhesion kinase (FAK) is a non-receptor protein tyrosine kinase that primarily regulates cell adhesion and migration. Based on recent studies, FAK is involved in inflammatory signaling pathway activation in cardiovascular diseases. Here, we evaluated the possibility of FAK as a therapeutic target for DCM. METHODS A small molecular selective FAKinhibitor, PND-1186 (PND), was used to evaluate the effect of FAK on DCM in both high glucose-stimulated cardiomyocytes and streptozotocin (STZ)-induced type 1 diabetes mellitus (T1DM) mice. RESULTS Increased FAK phosphorylation was found in the hearts of STZ-induced T1DM mice. PND treatment significantly decreased the expression of inflammatory cytokines and fibrogenic markers in cardiac specimens of diabetic mice. Notably, these reductions were correlated with improved cardiac systolic function. Furthermore, PND suppressed transforming growth factor-β-activated kinase 1 (TAK1) phosphorylation and NF-κB activation in the hearts of diabetic mice. Cardiomyocytes were identified as the main contributor to FAK-mediated cardiac inflammation and the involvement of FAK in cultured primary mouse cardiomyocytes and H9c2 cells was identified. Both FAK inhibition or FAK deficiency prevented hyperglycemia-induced inflammatory and fibrotic responses in cardiomyocytes owing to the inhibition of NF-κB. Herein, FAK activation was revealed to FAK directly binding to TAK1, leading to activation of TAK1 and downstream NF-κB signaling pathway. CONCLUSIONS FAK is a key regulator of diabetes-associated myocardial inflammatory injury by directly targeting to TAK1.
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Affiliation(s)
- Bo Jin
- Department of Gastroenterology, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang, China; Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jiong Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yi Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wei Zuo
- Department of Gastroenterology, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang, China
| | - Bo Hong
- Department of Gastroenterology, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang, China
| | - Jie Li
- Department of Gastroenterology, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang, China
| | - Fang Huang
- Department of Gastroenterology, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang, China
| | - Mengpei Zhang
- Department of Gastroenterology, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang, China.
| | - Yi Wang
- Department of Gastroenterology, The Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo, Zhejiang, China; Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, China.
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3
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Sanganalmath SK, Dubey S, Veeranki S, Narisetty K, Krishnamurthy P. The interplay of inflammation, exosomes and Ca 2+ dynamics in diabetic cardiomyopathy. Cardiovasc Diabetol 2023; 22:37. [PMID: 36804872 PMCID: PMC9942322 DOI: 10.1186/s12933-023-01755-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 01/25/2023] [Indexed: 02/22/2023] Open
Abstract
Diabetes mellitus is one of the prime risk factors for cardiovascular complications and is linked with high morbidity and mortality. Diabetic cardiomyopathy (DCM) often manifests as reduced cardiac contractility, myocardial fibrosis, diastolic dysfunction, and chronic heart failure. Inflammation, changes in calcium (Ca2+) handling and cardiomyocyte loss are often implicated in the development and progression of DCM. Although the existence of DCM was established nearly four decades ago, the exact mechanisms underlying this disease pathophysiology is constantly evolving. Furthermore, the complex pathophysiology of DCM is linked with exosomes, which has recently shown to facilitate intercellular (cell-to-cell) communication through biomolecules such as micro RNA (miRNA), proteins, enzymes, cell surface receptors, growth factors, cytokines, and lipids. Inflammatory response and Ca2+ signaling are interrelated and DCM has been known to adversely affect many of these signaling molecules either qualitatively and/or quantitatively. In this literature review, we have demonstrated that Ca2+ regulators are tightly controlled at different molecular and cellular levels during various biological processes in the heart. Inflammatory mediators, miRNA and exosomes are shown to interact with these regulators, however how these mediators are linked to Ca2+ handling during DCM pathogenesis remains elusive. Thus, further investigations are needed to understand the mechanisms to restore cardiac Ca2+ homeostasis and function, and to serve as potential therapeutic targets in the treatment of DCM.
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Affiliation(s)
- Santosh K Sanganalmath
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Nevada Las Vegas School of Medicine, Las Vegas, NV, 89102, USA.
| | - Shubham Dubey
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, University Blvd., Birmingham, AL, 35294, USA
| | - Sudhakar Veeranki
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, 40506, USA
| | | | - Prasanna Krishnamurthy
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, University Blvd., Birmingham, AL, 35294, USA
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Najjar RS, Knapp D, Wanders D, Feresin RG. Raspberry and blackberry act in a synergistic manner to improve cardiac redox proteins and reduce NF-κB and SAPK/JNK in mice fed a high-fat, high-sucrose diet. Nutr Metab Cardiovasc Dis 2022; 32:1784-1796. [PMID: 35487829 DOI: 10.1016/j.numecd.2022.03.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND AIMS Increased cardiac inflammation and oxidative stress are common features in obesity, and toll-like receptor (TLR)4 signaling is a key inflammatory pathway in this deleterious process. This study aimed to investigate whether berries could attenuate the detrimental effects of a high-fat, high-sucrose (HFHS) diet on the myocardium at the molecular level. METHODS AND RESULTS Eight-week-old male C57BL/6 mice consumed a low-fat, low-sucrose (LFLS) diet alone or supplemented with 10% blackberry (BL), 10% raspberry (RB) or 10% blackberry + raspberry (BL + RB) for four weeks. Animals were then switched to a HFHS diet for 24 weeks with or without berry supplementation or maintained on a LFLS control diet without berry supplementation. Left ventricles of the heart were isolated for protein and mRNA analysis. Berry consumption, particularly BL + RB reduced NADPH-oxidase (NOX)1 and NOX2 and increased catalase (CAT) and superoxide dismutase (SOD)2, expression while BL and RB supplementation alone was less efficacious. Downstream TLR4 signaling was attenuated mostly by both RB and BL + RB supplementation, while NF-κB pathway was attenuated by BL + RB supplementation. Stress-activated protein kinase (SAPK)/Jun amino-terminal kinase (JNK) was also attenuated by BL + RB supplementation, and reduced TNF-α transcription and protein expression was observed only with BL + RB supplementation. CONCLUSION The synergistic effects of BL + RB may reduce obesity-induced cardiac inflammation and oxidative stress to a greater extent than BL or RB alone.
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Affiliation(s)
- Rami S Najjar
- Department of Nutrition, Georgia State University, Atlanta, GA, USA
| | - Denise Knapp
- Department of Nutrition, Georgia State University, Atlanta, GA, USA; Department of Exercise Science and Sport Management, Kennesaw State University, Kennesaw, GA, USA
| | - Desiree Wanders
- Department of Nutrition, Georgia State University, Atlanta, GA, USA
| | - Rafaela G Feresin
- Department of Nutrition, Georgia State University, Atlanta, GA, USA.
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Youssef ME, El-Azab MF, Abdel-Dayem MA, Yahya G, Alanazi IS, Saber S. Electrocardiographic and histopathological characterizations of diabetic cardiomyopathy in rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:25723-25732. [PMID: 34845640 DOI: 10.1007/s11356-021-17831-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
Diabetes is a clinical condition that is associated with insulin deficiency and hyperglycemia. Cardiomyopathy, retinopathy, neuropathy, and nephropathy are well known complications of the elevated blood glucose. Diabetic cardiomyopathy is a clinical disorder that is associated with systolic and diastolic dysfunction along with cardiac fibrosis, inflammation, and elevated oxidative stress. In this study, diabetes was induced by intraperitoneal injection of streptozotocin (STZ) 50 mg/kg. We determined the plasma levels of cardiac troponin-T (cTnT) and creatinine kinase MB (CK-MB) by ELISA. Diabetic rats showed abnormal cardiac architecture and increased collagen production. Significant elevation in ST-segment, prolonged QRS, and QT-intervals and increased ventricular rate were detected. Additionally, diabetic rats showed a prolongation in P wave duration and atrial tachyarrhythmia was observed. Plasma levels of cTnT and CK-MB were elevated. In conclusion, these electrocardiographic changes (elevated ST-segment, prolonged QT interval, and QRS complex, and increased heart rate) along with histopathological changes and increased collagen formation could be markers for the development of diabetic cardiomyopathy in rats.
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Affiliation(s)
- Mahmoud E Youssef
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology Gamasa, Talkha, Egypt
| | - Mona F El-Azab
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Marwa A Abdel-Dayem
- Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Horus University, New Damietta, Egypt
| | - Galal Yahya
- Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Al Sharqia, 44519, Egypt.
| | - Ibtesam S Alanazi
- Department of Biology, Faculty of Sciences, University of Hafr Al Batin, Hafr Al Batin, Saudi Arabia
| | - Sameh Saber
- Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology Gamasa, Talkha, Egypt
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6
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Wang M, Zhang Z, Huo Q, Wang M, Sun Y, Liu H, Chang J, He B, Liang Y. Targeted Polymeric Nanoparticles Based on Mangiferin for Enhanced Protection of Pancreatic β-Cells and Type 1 Diabetes Mellitus Efficacy. ACS APPLIED MATERIALS & INTERFACES 2022; 14:11092-11103. [PMID: 35199981 DOI: 10.1021/acsami.1c22964] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mangiferin (MGF) is found in many natural plants, such as Rhizoma Anemarrhenae, and has anti-diabetes effects. However, its clinical applications and development are limited by poor solubility and low-concentration enrichment in pancreatic islets. In this paper, targeted polymeric nanoparticles were constructed for MGF delivery with the desired drug loading content (6.86 ± 0.60%), excellent blood circulation, and missile-like delivery to the pancreas. Briefly, Glucagon-like peptide 1 (GLP-1) as an active targeting agent to the pancreas was immobilized on the block copolymer polyethyleneglycol-polycaprolactone (PEG-PCL) to obtain final GLP-1-PEG-PCL amphiphiles. Spherical MGF-loaded polymeric nanoparticles were acquired from the self-assembly of the targeted GDPP nanoparticles and MGF with a homogeneous size of 158.9 ± 1.7 nm and a negative potential for a good steady state in circulation. In this drug vehicle, GLP-1 acts as the missile vanguard via the GLP-1 receptor on the surface of the pancreas for improving the accumulation and efficiency of MGF in the pancreas, the hypoglycemic effect of MGF, and the restorative effect on pancreatic islets, which were investigated. As compared to free MGF, MGF/GDPP nanoparticles appeared to be more concentrated in the pancreas, with better blood glucose and glucose tolerance, enhanced insulin levels, increased β-cell proliferation, reduced β-cell apoptosis, and islet repair in vivo. This targeted drug delivery system provided a novel strategy and hope for enhancing MGF delivery and anti-diabetes efficacy.
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Affiliation(s)
- Mengdi Wang
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China
| | - Zhuoran Zhang
- Department of Dentistry, Qingdao Special Service Sanatorium of PLA Navy, Qingdao 266021, China
| | - Qingqing Huo
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China
| | - Maolong Wang
- Department of Thoracic Surgery, Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Yong Sun
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China
| | - Hongling Liu
- Department of Pharmacy, Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Jing Chang
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China
| | - Bin He
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Yan Liang
- Department of Pharmaceutics, School of Pharmacy, Qingdao University, Qingdao 266073, China
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7
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Henson SM, Aksentijevic D. Senescence and Type 2 Diabetic Cardiomyopathy: How Young Can You Die of Old Age? Front Pharmacol 2021; 12:716517. [PMID: 34690759 PMCID: PMC8529062 DOI: 10.3389/fphar.2021.716517] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 09/16/2021] [Indexed: 01/10/2023] Open
Abstract
Inflammation is well understood to be a physiological process of ageing however it also underlies many chronic diseases, including conditions without an obvious pathogenic inflammatory element. Recent findings have unequivocally identified type 2 diabetes (T2D) as a chronic inflammatory disease characterized by inflammation and immune senescence. Immunosenescence is a hallmark of the prolonged low-grade systemic inflammation, in particular associated with metabolic syndrome and can be a cause as well as a consequence of T2D. Diabetes is a risk factor for cardiovascular mortality and remodelling and with particular changes to myocardial structure, function, metabolism and energetics collectively resulting in diabetic cardiomyopathy. Both cardiomyocytes and immune cells undergo metabolic remodelling in T2D and as a result become trapped in a vicious cycle of lost metabolic flexibility, thus losing their key adaptive mechanisms to dynamic changes in O2 and nutrient availability. Immunosenescence driven by metabolic stress may be both the cause and key contributing factor to cardiac dysfunction in diabetic cardiomyopathy by inducing metabolic perturbations that can lead to impaired energetics, a strong predictor of cardiac mortality. Here we review our current understanding of the cross-talk between inflammaging and cardiomyocytes in T2D cardiomyopathy. We discuss potential mechanisms of metabolic convergence between cell types which, we hypothesize, might tip the balance between resolution of the inflammation versus adverse cardiac metabolic remodelling in T2D cardiomyopathy. A better understanding of the multiple biological paradigms leading to T2D cardiomyopathy including the immunosenescence associated with inflammaging will provide a powerful target for successful therapeutic interventions.
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Affiliation(s)
- Sian M Henson
- Centre for Translational Medicine and Therapeutics, London, United Kingdom
| | - Dunja Aksentijevic
- Centre for Biochemical Pharmacology, London, United Kingdom.,Centre for Inflammation and Therapeutic Innovation William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
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8
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Wenzl FA, Ambrosini S, Mohammed SA, Kraler S, Lüscher TF, Costantino S, Paneni F. Inflammation in Metabolic Cardiomyopathy. Front Cardiovasc Med 2021; 8:742178. [PMID: 34671656 PMCID: PMC8520939 DOI: 10.3389/fcvm.2021.742178] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/31/2021] [Indexed: 12/24/2022] Open
Abstract
Overlapping pandemics of lifestyle-related diseases pose a substantial threat to cardiovascular health. Apart from coronary artery disease, metabolic disturbances linked to obesity, insulin resistance and diabetes directly compromise myocardial structure and function through independent and shared mechanisms heavily involving inflammatory signals. Accumulating evidence indicates that metabolic dysregulation causes systemic inflammation, which in turn aggravates cardiovascular disease. Indeed, elevated systemic levels of pro-inflammatory cytokines and metabolic substrates induce an inflammatory state in different cardiac cells and lead to subcellular alterations thereby promoting maladaptive myocardial remodeling. At the cellular level, inflammation-induced oxidative stress, mitochondrial dysfunction, impaired calcium handling, and lipotoxicity contribute to cardiomyocyte hypertrophy and dysfunction, extracellular matrix accumulation and microvascular disease. In cardiometabolic patients, myocardial inflammation is maintained by innate immune cell activation mediated by pattern recognition receptors such as Toll-like receptor 4 (TLR4) and downstream activation of the NLRP3 inflammasome and NF-κB-dependent pathways. Chronic low-grade inflammation progressively alters metabolic processes in the heart, leading to a metabolic cardiomyopathy (MC) phenotype and eventually to heart failure with preserved ejection fraction (HFpEF). In accordance with preclinical data, observational studies consistently showed increased inflammatory markers and cardiometabolic features in patients with HFpEF. Future treatment approaches of MC may target inflammatory mediators as they are closely intertwined with cardiac nutrient metabolism. Here, we review current evidence on inflammatory processes involved in the development of MC and provide an overview of nutrient and cytokine-driven pro-inflammatory effects stratified by cell type.
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Affiliation(s)
- Florian A Wenzl
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Samuele Ambrosini
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Shafeeq A Mohammed
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Simon Kraler
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland.,Royal Brompton and Harefield Hospitals and Imperial College, London, United Kingdom
| | - Sarah Costantino
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Francesco Paneni
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland.,University Heart Center, Cardiology, University Hospital Zurich, Zurich, Switzerland.,Department of Research and Education, University Hospital Zurich, Zurich, Switzerland
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9
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Chen X, Yun C, Zheng H, Chen X, Han Q, Pan H, Wang Y, Zhong J. The protective effects of S14G-humanin (HNG) against streptozotocin (STZ)-induced cardiac dysfunction. Bioengineered 2021; 12:5491-5503. [PMID: 34506248 PMCID: PMC8806847 DOI: 10.1080/21655979.2021.1964894] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Excessive oxidative stress, inflammation, and myocardial hypertrophy have been associated with diabetic cardiomyopathy (DCM). S14G-humanin (HNG) is a potent humanin analogue that has demonstrated cytoprotective effects in a variety of cells and tissues. However, the pharmacological function of HNG in diabetic cardiomyopathy has not yet been reported. In the present study, we investigated the protective effects of HNG against streptozotocin (STZ)-induced cardiac dysfunction in diabetic mice. Myocardial hypertrophy in diabetic mice was determined using Wheat Gem Agglutinin (WGA) staining. The heart function was measured with Echocardiographic imaging. Levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) proteins in plasma were measured using enzyme-linked immunosorbent assay (ELISA) kits. Protein expression of Phosphorylated p38/p38 was determined using western blots. We found that HNG treatment attenuated the STZ-induced myocardial hypertrophy and significantly improved heart function. Also, its treatment proved effective as it reduced the levels of several myocardial injury indicators, including creatine kinase-MB (CK-MB), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), and both the cardiac and plasma levels of TNF-α and IL-6, highlighting its effect on the STZ-induced myocardial injury. Lastly, HNG suppressed the activation of the p38/nuclear factor kappa-B (NF-κB) signaling pathway. S14G humanin possesses protective effects against streptozotocin-induced cardiac dysfunction through inhibiting the activation of the p38/NF-κB signaling pathway.
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Affiliation(s)
- Xiaopan Chen
- Department Of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Chuan Yun
- Department Of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Hailong Zheng
- Department Of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Xu Chen
- Department Of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Qianfei Han
- Department Of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Hua Pan
- Department Of Endocrinology, The First Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Yang Wang
- Department Of Cardiology, Affiliated Haikou Hospital Of Xiangya Medical College, Central South University, Haikou, Hainan Province, China
| | - Jianghua Zhong
- Department Of Cardiology, Affiliated Haikou Hospital Of Xiangya Medical College, Central South University, Haikou, Hainan Province, China
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10
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Kaur N, Guan Y, Raja R, Ruiz-Velasco A, Liu W. Mechanisms and Therapeutic Prospects of Diabetic Cardiomyopathy Through the Inflammatory Response. Front Physiol 2021; 12:694864. [PMID: 34234695 PMCID: PMC8257042 DOI: 10.3389/fphys.2021.694864] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/10/2021] [Indexed: 12/14/2022] Open
Abstract
The incidence of heart failure (HF) continues to increase rapidly in patients with diabetes. It is marked by myocardial remodeling, including fibrosis, hypertrophy, and cell death, leading to diastolic dysfunction with or without systolic dysfunction. Diabetic cardiomyopathy (DCM) is a distinct myocardial disease in the absence of coronary artery disease. DCM is partially induced by chronic systemic inflammation, underpinned by a hostile environment due to hyperglycemia, hyperlipidemia, hyperinsulinemia, and insulin resistance. The detrimental role of leukocytes, cytokines, and chemokines is evident in the diabetic heart, yet the precise role of inflammation as a cause or consequence of DCM remains incompletely understood. Here, we provide a concise review of the inflammatory signaling mechanisms contributing to the clinical complications of diabetes-associated HF. Overall, the impact of inflammation on the onset and development of DCM suggests the potential benefits of targeting inflammatory cascades to prevent DCM. This review is tailored to outline the known effects of the current anti-diabetic drugs, anti-inflammatory therapies, and natural compounds on inflammation, which mitigate HF progression in diabetic populations.
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Affiliation(s)
| | | | | | | | - Wei Liu
- Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine, and Health, The University of Manchester, Manchester, United Kingdom
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11
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Rong L, Sun S, Zhu F, Xu Q, Li H, Gao Q, Zhang W, Tang B, Zhang H, Wang H, Kang P. Effects of irbesartan on myocardial injury in diabetic rats: The role of NLRP3/ASC/Caspase-1 pathway. J Renin Angiotensin Aldosterone Syst 2021; 21:1470320320926049. [PMID: 32466695 PMCID: PMC7263129 DOI: 10.1177/1470320320926049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
To observe the mechanism of myocardial injury in diabetic rats after irbesartan intervention and analyze the role of nucleotide binding oligomerization domain-like receptor protein 3 (NLRP3) inflammatory pathway. The experiment was divided into four groups: normal control group (CON), high glucose and high caloric diet group (HC), diabetes group (DM) and diabetes+irbesartan group (DM+Ir). Compared with CON group, in HC group, triglyceride, total cholesterol and fasting blood glucose levels were increased; however, there was no significant difference of the cardiac function, the degree of myocardial fibrosis, NLRP3, ASC, Caspase-1 mRNA and protein expressions and the releasing of inflammatory factors interleukin (IL)-1β and IL-18. Compared with HC group, in DM group, triglyceride, total cholesterol, fasting blood glucose, IL-1β and IL-18 levels, NLRP3, ASC, Caspase-1 mRNA and protein expressions and the degree of myocardial fibrosis were increased, but the cardiac function was decreased. Compared with DM group, there were no changes in total cholesterol and fasting blood glucose, the degree of myocardial fibrosis cardiac function was attenuated, NLRP3, ASC, Caspase-1 expressions, IL-1β and IL-18 levels were reduced in DM+Ir group. The results suggested that irbesartan may exert myocardial protection by inhibiting the expression of the NLRP3/ASC/Caspase-1 pathway in diabetic rats.
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Affiliation(s)
- Li Rong
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China
| | - Shuo Sun
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China
| | - Feiyu Zhu
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China.,Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, PR China
| | - Qingmei Xu
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China.,Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, PR China
| | - Hui Li
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China
| | - Qin Gao
- Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, PR China.,Department of Physiology, Bengbu Medical College, PR China
| | - Wei Zhang
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China
| | - Bi Tang
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China
| | - Heng Zhang
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China
| | - Hongju Wang
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China
| | - Pinfang Kang
- Department of Cardiovascular Disease, The First Affiliated Hospital of Bengbu Medical College, PR China.,Bengbu Medical College Key Laboratory of Cardiovascular and Cerebrovascular Diseases, PR China
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12
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Huang Q, Liu DH, Chen CF, Han Y, Huang ZQ, Zhang JW, Zeng XM. Pgc-1α Promotes Phosphorylation, Inflammation, and Apoptosis in H9c2 Cells During the Early Stage of Lipopolysaccharide Induction. Inflammation 2021; 44:1771-1781. [PMID: 33847873 DOI: 10.1007/s10753-021-01453-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/05/2021] [Accepted: 03/15/2021] [Indexed: 11/26/2022]
Abstract
Cardiac dysfunction in severe sepsis is associated with increased mortality. However, the molecular mechanisms underlying septic heart dysfunction remain unclear. Expression of peroxisome proliferator-activated receptor-γ coactivator 1α (Pgc-1α), concentrations of inflammatory factors, and activation of the nuclear factor kappa-B (NF-κB) signaling pathway were examined in H9c2 cells after a 24-h lipopolysaccharide (LPS) stimulation period using qPCR, enzyme-linked immunosorbent assays (ELISAs), and western blots (WBs), respectively. Pgc-1α was overexpressed and suppressed in cells using a lentivirus vector and siRNA, respectively. The effects of Pgc-1α dysfunction on the release of inflammatory factors and apoptosis were analyzed. Pgc-1α expression was increased after LPS induction for 0.5 h and returned to the pre-induction level at 2 h. Levels of IL-1β, IL-6, and TNF-α increase after LPS induction for 0.5 h and accumulated in the culture supernatants over time. The WBs revealed the highest Pgc-1α and phospho (p)-p65 protein levels after LPS induction for 0.5 h, followed by a decrease; moreover, the cleaved-caspase-3 level increased after LPS induction for 0.5 h and increased gradually thereafter. A functional analysis of Pgc-1α revealed that overexpression of this protein enhanced LPS-induced inflammatory factors and p-p65 levels and inhibited apoptosis during the early stage after LPS induction (0.5 and 4 h). In contrast, the inhibition of Pgc-1α expression inhibited the LPS expression-associated increases in inflammatory factors and p-p65 and promoted apoptosis. Pgc-1α promoted LPS-induced p65 phosphorylation and inflammatory factor release while inhibiting apoptosis.
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Affiliation(s)
- Qun Huang
- Emergency Department, Shenzhen Second People's Hospital, Shenzhen University First Affiliated Hospital, No.3002 Sungang West Road, Shenzhen, 518035, Guangdong, People's Republic of China
| | - De-Hong Liu
- Emergency Department, Shenzhen Second People's Hospital, Shenzhen University First Affiliated Hospital, No.3002 Sungang West Road, Shenzhen, 518035, Guangdong, People's Republic of China.
| | - Chang-Feng Chen
- Emergency Department, Shenzhen Second People's Hospital, Shenzhen University First Affiliated Hospital, No.3002 Sungang West Road, Shenzhen, 518035, Guangdong, People's Republic of China
| | - Yong Han
- Emergency Department, Shenzhen Second People's Hospital, Shenzhen University First Affiliated Hospital, No.3002 Sungang West Road, Shenzhen, 518035, Guangdong, People's Republic of China
| | - Zhi-Qiang Huang
- Emergency Department, Shenzhen Second People's Hospital, Shenzhen University First Affiliated Hospital, No.3002 Sungang West Road, Shenzhen, 518035, Guangdong, People's Republic of China
| | - Ji-Wen Zhang
- Emergency Department, Shenzhen Second People's Hospital, Shenzhen University First Affiliated Hospital, No.3002 Sungang West Road, Shenzhen, 518035, Guangdong, People's Republic of China
| | - Xiao-Mei Zeng
- Emergency Department, Shenzhen Second People's Hospital, Shenzhen University First Affiliated Hospital, No.3002 Sungang West Road, Shenzhen, 518035, Guangdong, People's Republic of China
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13
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Youssef ME, Abdelrazek HM, Moustafa YM. Cardioprotective role of GTS-21 by attenuating the TLR4/NF-κB pathway in streptozotocin-induced diabetic cardiomyopathy in rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2021; 394:11-31. [PMID: 32776158 DOI: 10.1007/s00210-020-01957-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/30/2020] [Indexed: 12/13/2022]
Abstract
The cholinergic anti-inflammatory pathway (CAP) was investigated in a variety of inflammatory conditions and constitutes a valuable line in their treatment. In the current study, we investigated the anti-inflammatory effect of GTS-21 (GTS) as a partial selective α7 nicotinic acetylcholine receptor (α7-nAchR) agonist in diabetic cardiomyopathy model in rats. This mechanism was elaborated to study whether it could alleviate the electrocardiographic, histopathological, and molecular levels of Toll-like receptor 4 (TLR4)/nuclear factor κB (NF-κB) pathway proteins. Diabetes was induced by the injection of streptozotocin (STZ) (50 mg/kg). Diabetic rats were treated with GTS (1 or 2 mg/kg/day), methyllycaconitine (MLA), a selective α7-nAchR antagonist (2 mg/kg/day) plus GTS (2 mg/kg/day), or the vehicle. All treatments were given by the intraperitoneal route. Ventricular rate and different electrocardiograph (ECG) anomalies were detected. Plasma levels of cardiac troponin T (cTnT) and creatine kinase MB (CK-MB) were measured by ELISA. Additionally, we elucidated the levels of several proteins involved in the TLR4/NF-κB pathway. Cardiac levels of TLR4 and phosphorylated protein kinase B (p-Akt) were detected by ELISA. The cardiac expression of myeloid differentiation primary response 88 (Myd88), tumor necrosis factor receptor-associated factor 6 (TRAF6), NF-κB, interleukin 1β (IL-1β), and active caspase-1 were evaluated by immunohistochemical staining. Finally, the cardiac levels of interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α) were determined by ELISA. Diabetic rats showed (i) ECG signs of cardiomyopathy such as significant ST segment elevations, prolonged QRS, QT intervals, and ventricular tachycardia; (ii) increased plasma levels of cTnT and CK-MB; (iii) increased expression of cardiac TLR4; (iv) elevated immunohistochemical expression of cardiac, Myd88, TRAF6, and NF-κB; (v) diminution in the cardiac expression of p-Akt; and (vi) adaptive increases in cardiac expression of TNF-α and IL-6. These effects were ameliorated in diabetic rats treated with both doses of GTS. Pretreatment with MLA did not completely reverse the ameliorative effect of GTS on cTnT, TRAF6, TNF-α, and IL-6, thereby reinforcing the presence of possible α7-nAchR-independent mechanisms. The activation of α7-nAchR with GTS offers a promising prophylactic strategy for diabetic cardiomyopathy by attenuating the TLR4/NF-κB pathway.
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Affiliation(s)
- Mahmoud E Youssef
- Department of pharmacology and biochemistry, Faculty of pharmacy, Delta University for Science and Technology, Mansoura, Egypt.
| | - Heba M Abdelrazek
- Department of Physiology, Faculty of veterinary medicine, Suez Canal University, Ismailia, Egypt
| | - Yasser M Moustafa
- Department of Pharmacology and Toxicology, Dean of the Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
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14
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Xu Q, Tan X, Xian W, Geng J, Li H, Tang B, Zhang H, Wang H, Gao Q, Kang P. Changes of Necroptosis in Irbesartan Medicated Cardioprotection in Diabetic Rats. Diabetes Metab Syndr Obes 2021; 14:3851-3863. [PMID: 34522112 PMCID: PMC8434868 DOI: 10.2147/dmso.s300388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 08/05/2021] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is strongly linked to microvascular disease, renin-angiotensin system (RAS) activation, cardiac inflammation and cell apoptosis. Irbesartan is an angiotensin II (Ang II) receptor antagonist in RAS system, which inhibited the conversion of Ang I into Ang II, while the specific mechanism is still obscure. OBJECTIVE This study aims to investigate the expressions necroptosis RIP1-RIP3-MLKL pathway in myocardium of diabetic rats, and the protective action of irbesartan on myocardial damage. MATERIALS AND METHODS In our study, 30 Sprague-Dawley rats were divided into 5 groups: CON4W, high glucose and high caloric (HC4W), diabetes mellitus 4 weeks (DM4W group), diabetes mellitus 8 weeks (DM8W group), and irbesartan diabetes 8 weeks (Ir DM8W group). RESULTS We discovered that as diabetes progresses, the rats gradually lost weight, the HW/BW ratio were increased gradually, and the cardiac function became worse accompanied with the aggravation of inflammatory injury. Meanwhile, the myocardial fibers and cells were disordered, and the expression of positive substances, RIP1 and RIP3 increased significantly. The mRNA and protein levels of myocardial RIP1, RIP3 and MLKL were all increased with the progression of DM. After the intervention of irbesartan in diabetic rats, the cardiac function was improved, whereas inflammatory injury and HW/BW ratio were decreased. Also, the myocardial fibrosis injury was attenuated, and the PAS positive substances, RIP1 and RIP3 were significantly decreased. The curative effect of irbesartan was related to decreased myocardial RIP1, RIP3 and MLKL mRNA and protein levels. CONCLUSION In conclusion, irbesartan has a cardioprotective effect on the diabetic rats, and its mechanism may be connected with inhibition of RIP1-RIP3-MLKL pathway.
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Affiliation(s)
- Qingmei Xu
- Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of China
| | - Xin Tan
- Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of China
| | - Wei Xian
- Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of China
| | - Jiayi Geng
- Department of Preventive Medicine, Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Haoyu Li
- Clinic Medical College of AnHui Medical University, Hefei, Anhui, 230000, People’s Republic of China
| | - Bi Tang
- Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of China
- Cardiovascular Disease Research Center of Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Heng Zhang
- Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of China
| | - Hongju Wang
- Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of China
- Cardiovascular Disease Research Center of Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
| | - Qin Gao
- Department of Physiology, Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Pinfang Kang
- Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of China
- Cardiovascular Disease Research Center of Bengbu Medical College, Bengbu, Anhui, 233030, People’s Republic of China
- Correspondence: Pinfang Kang Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233004, People’s Republic of ChinaTel +86 552-3086107 Email
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15
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Tan YY, Chen LX, Fang L, Zhang Q. Cardioprotective effects of polydatin against myocardial injury in diabetic rats via inhibition of NADPH oxidase and NF-κB activities. BMC Complement Med Ther 2020; 20:378. [PMID: 33308195 PMCID: PMC7733248 DOI: 10.1186/s12906-020-03177-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 12/06/2020] [Indexed: 02/06/2023] Open
Abstract
Background Diabetic cardiomyopathy is a main cause of the increased morbidity in diabetic patients, no effective treatment is available so far. Polydatin, a resveratrol glucoside isolated from the Polygonum cuspidatum, was found by our and others have antioxidant and cardioprotective activities. Therapeutic effects of polydatin on diabetic cardiomyopathy and the possible mechanisms remains unclear. This study aimed to investigate the cardioprotective effects and underlying mechanisms of polydatin on myocardial injury induced by hyperglycemia. Methods Diabetes in rats was made by high-fat diet combined with multiple low doses of streptozotocin, and then treated with polydatin (100 mg·kg-1·day-1, by gavage) for 8 weeks. Cardiac function was examined by echocardiography. Myocardial tissue and blood samples were collected for histology, protein and metabolic characteristics analysis. In cultured H9c2 cells with 30 mM of glucose, the direct effects of polydatin on myocyte injury were also observed. Results In diabetic rats, polydatin administration significantly improved myocardial dysfunction and attenuated histological abnormalities, as evidenced by elevating left ventricular shortening fraction and ejection fraction, as well as reducing cardiac hypertrophy and interstitial fibrosis. In cultured H9c2 cells, pretreatment of polydatin dose-dependently inhibited high glucose-induced cardiomyocyte injury. Further observation evidenced that polydatin suppressed the increase in the reactive oxygen species levels, NADPH oxidase activity and inflammatory cytokines production induced by hyperglycemia in vivo and in vitro. Polydatin also prevented the increase expression of NOX4, NOX2 and NF-κB in the high glucose -stimulated H9c2 cells and diabetic hearts. Conclusions Our results demonstrate that the cardioprotective effect of polydatin against hyperglycemia-induced myocardial injury is mediated by inhibition of NADPH oxidase and NF-κB activity. The findings may provide a novel understanding the mechanisms of the polydatin to be a potential treatment of diabetic cardiomyopathy. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-020-03177-y.
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Affiliation(s)
- Ying-Ying Tan
- Shaanxi Key Laboratory of Chinese Medicine Encephalopathy, Shaanxi University of Chinese Medicine, Century Avenue, Xianyang, Shaanxi, 712046, P. R. China.,Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, 712046, P. R. China
| | - Lei-Xin Chen
- Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi, 712046, P. R. China
| | - Ling Fang
- Shaanxi Key Laboratory of Chinese Medicine Encephalopathy, Shaanxi University of Chinese Medicine, Century Avenue, Xianyang, Shaanxi, 712046, P. R. China
| | - Qi Zhang
- Shaanxi Key Laboratory of Chinese Medicine Encephalopathy, Shaanxi University of Chinese Medicine, Century Avenue, Xianyang, Shaanxi, 712046, P. R. China.
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16
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Cheng G, Li L. High-glucose-induced apoptosis, ROS production and pro-inflammatory response in cardiomyocytes is attenuated by metformin treatment via PP2A activation. J Biosci 2020. [DOI: 10.1007/s12038-020-00096-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Tan Y, Zhang Z, Zheng C, Wintergerst KA, Keller BB, Cai L. Mechanisms of diabetic cardiomyopathy and potential therapeutic strategies: preclinical and clinical evidence. Nat Rev Cardiol 2020; 17:585-607. [PMID: 32080423 PMCID: PMC7849055 DOI: 10.1038/s41569-020-0339-2] [Citation(s) in RCA: 322] [Impact Index Per Article: 80.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/16/2020] [Indexed: 02/07/2023]
Abstract
The pathogenesis and clinical features of diabetic cardiomyopathy have been well-studied in the past decade, but effective approaches to prevent and treat this disease are limited. Diabetic cardiomyopathy occurs as a result of the dysregulated glucose and lipid metabolism associated with diabetes mellitus, which leads to increased oxidative stress and the activation of multiple inflammatory pathways that mediate cellular and extracellular injury, pathological cardiac remodelling, and diastolic and systolic dysfunction. Preclinical studies in animal models of diabetes have identified multiple intracellular pathways involved in the pathogenesis of diabetic cardiomyopathy and potential cardioprotective strategies to prevent and treat the disease, including antifibrotic agents, anti-inflammatory agents and antioxidants. Some of these interventions have been tested in clinical trials and have shown favourable initial results. In this Review, we discuss the mechanisms underlying the development of diabetic cardiomyopathy and heart failure in type 1 and type 2 diabetes mellitus, and we summarize the evidence from preclinical and clinical studies that might provide guidance for the development of targeted strategies. We also highlight some of the novel pharmacological therapeutic strategies for the treatment and prevention of diabetic cardiomyopathy.
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Affiliation(s)
- Yi Tan
- Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, USA.
- Wendy Novak Diabetes Center, University of Louisville, Norton Children's Hospital, Louisville, KY, USA.
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA.
| | - Zhiguo Zhang
- Department of Cardiology, The First Hospital of Jilin University, Changchun, China
| | - Chao Zheng
- The Second Affiliated Hospital Center of Chinese-American Research Institute for Diabetic Complications, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Kupper A Wintergerst
- Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, USA
- Wendy Novak Diabetes Center, University of Louisville, Norton Children's Hospital, Louisville, KY, USA
- Division of Endocrinology, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, USA
| | - Bradley B Keller
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA
- Kosair Charities Pediatric Heart Research Program, Cardiovascular Innovation Institute, University of Louisville, Louisville, KY, USA
| | - Lu Cai
- Pediatric Research Institute, Department of Pediatrics, University of Louisville School of Medicine, Louisville, KY, USA.
- Wendy Novak Diabetes Center, University of Louisville, Norton Children's Hospital, Louisville, KY, USA.
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY, USA.
- Department of Radiation Oncology, University of Louisville School of Medicine, Louisville, KY, USA.
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18
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Rong L, Sun S, Zhu F, Zhao Y, Gao Q, Zhang H, Tang B, Wang H, Kang P. [Expression of NLRP1 inflammasomes in myocardial tissue of diabetic rats]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2020; 40:87-92. [PMID: 32376565 DOI: 10.12122/j.issn.1673-4254.2020.01.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To observe the expression of NLRP1 inflammasomes in myocardial tissues in rats with a high-fat and highsugar diet and in diabetic rats analyze the role of NLRP1 inflammasomes in the pathogenesis of diabetic cardiomyopathy. METHODS Male SD rats were divided into normal control group, high-sugar and high-fat diet (HC) group and diabetes group. Rat models of diabetes were established by intraperitoneal injection of streptozotocin (STZ; 30 mg/kg). Serum levels of cholesterol (TC), triglyceride (TG), and fasting insulin (FINS) were measured after 8 weeks of feeding, and the insulin resistance index (IRI) and insulin sensitivity index (ISI) were calculated; Echocardiographic evaluation of cardiac structure and function was performed, and Western blotting and real-time fluorescent quantitative PCR (RT-qRCP) were used to detect the protein and mRNA expressions of NLRP1, ASC, and caspase 1 in the myocardial tissue. RESULTS Compared with the control rats, the rats in the HC group had significantly increased body weight (BW), serum levels of TG and TC, mRNA expressions of NLRP1 and caspase 1, and the protein expression of NLRP1 (P < 0.01) without significant changes in FINS, IRI, ISI, or cardiac ultrasound findings (P > 0.05) or in myocardial ASC and caspase 1 protein expressions or serum levels of IL-1β and IL-18 (P > 0.05). In the diabetic rats, TC, TG, and FBG levels increased and FINS, ISI decreased significantly (P < 0.01); the left ventricular end-diastolic diameter (LVID) and the left ventricular end-systolic diameter (LVSD) increased while the ejection fraction (LVEF), short axis shortening rate (FS), and E/A ratio all decreased. The expressions of NLRP1/ASC/caspase 1 pathway mRNA and NLRP1 and caspase 1 proteins also increased but myocardium ASC protein expression did not show significant changes in the diabetic rats (P > 0.05). IL-1β and IL-18 levels were also significantly higher in the diabetic rats than in the control group (P < 0.05). Compared with those in HC group, the diabetic rats showed significantly increased serum FBG and decreased FINS, ISI and BW (P < 0.01) with decreased LVSD, LVEF and E/A ratio and increased levels of NLRP1 and caspase 1 protein expressions and serum L-1β and IL-18 levels (P < 0.01). CONCLUSIONS Diabetes can cause abnormal changes in cardiac structure and functions and induce inflammatory response in the myocardium, which may be related to the activation of NLRP1/ASC/ caspase 1 inflammasomes.
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Affiliation(s)
- Li Rong
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Shuo Sun
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Feiyu Zhu
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Yi Zhao
- Department of Clinical Medicine, South Campus, Anhui Medical University, Hefei 230000, China
| | - Qin Gao
- Department of Physiology, Bengbu Medical College, Bengbu 233030, China
| | - Heng Zhang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Bi Tang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Hongju Wang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Pinfang Kang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
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19
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MD2 activation by direct AGE interaction drives inflammatory diabetic cardiomyopathy. Nat Commun 2020; 11:2148. [PMID: 32358497 PMCID: PMC7195432 DOI: 10.1038/s41467-020-15978-3] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 04/07/2020] [Indexed: 12/12/2022] Open
Abstract
Hyperglycemia activates toll-like receptor 4 (TLR4) to induce inflammation in diabetic cardiomyopathy (DCM). However, the mechanisms of TLR4 activation remain unclear. Here we examine the role of myeloid differentiation 2 (MD2), a co-receptor of TLR4, in high glucose (HG)- and diabetes-induced inflammatory cardiomyopathy. We show increased MD2 in heart tissues of diabetic mice and serum of human diabetic subjects. MD2 deficiency in mice inhibits TLR4 pathway activation, which correlates with reduced myocardial remodeling and improved cardiac function. Mechanistically, we show that HG induces extracellular advanced glycation end products (AGEs), which bind directly to MD2, leading to formation of AGEs-MD2-TLR4 complex and initiation of pro-inflammatory pathways. We further detect elevated AGE-MD2 complexes in heart tissues and serum of diabetic mice and human subjects with DCM. In summary, we uncover a new mechanism of HG-induced inflammatory responses and myocardial injury, in which AGE products directly bind MD2 to drive inflammatory DCM. The mechanisms underlying cardiac inflammation in diabetic cardiomyopathy are incompletely understood. Here the authors show that advanced glycation end products bind to the TLR4 co-receptor MD2 initiating pro-inflammatory pathways.
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20
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Song KY, Zhang XZ, Li F, Ji QR. Silencing of ATP2B1-AS1 contributes to protection against myocardial infarction in mouse via blocking NFKBIA-mediated NF-κB signalling pathway. J Cell Mol Med 2020; 24:4466-4479. [PMID: 32155320 PMCID: PMC7176878 DOI: 10.1111/jcmm.15105] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 01/14/2020] [Accepted: 01/31/2020] [Indexed: 12/17/2022] Open
Abstract
Myocardial infarction (MI) is an acute coronary syndrome that refers to tissue infarction of the myocardium. This study aimed to investigate the effect of long intergenic non‐protein‐coding RNA (lincRNA) ATPase plasma membrane Ca2+ transporting 1 antisense RNA 1 (ATP2B1‐AS1) against MI by targeting nuclear factor‐kappa‐B inhibitor alpha (NFKBIA) and mediating the nuclear factor‐kappa‐B (NF‐κB) signalling pathway. An MI mouse model was established and idenepsied by cardiac function evaluation. It was determined that ATP2B1‐AS1 was highly expressed, while NFKBIA was poorly expressed and NF‐κB signalling pathway was activated in MI mice. Cardiomyocytes were extracted from mice and introduced with a series of mouse ATP2B1‐AS1 vector, NFKBIA vector, siRNA‐mouse ATP2B1‐AS1 and siRNA‐NFKBIA. The expression of NF‐κBp50, NF‐κBp65 and IKKβ was determined to idenepsy whether ATP2B1‐AS1 and NFKBIA affect the NF‐κB signalling pathway, the results of which suggested that ATP2B1‐AS1 down‐regulated the expression of NFKBIA and activated the NF‐κB signalling pathway in MI mice. Based on the data from assessment of cell viability, cell cycle, apoptosis and levels of inflammatory cytokines, either silencing of mouse ATP2B1‐AS1 or overexpression of NFKBIA was suggested to result in reduced cardiomyocyte apoptosis and expression of inflammatory cytokines, as well as enhanced cardiomyocyte viability. Our study provided evidence that mouse ATP2B1‐AS1 silencing may have the potency to protect against MI in mice through inhibiting cardiomyocyte apoptosis and inflammation, highlighting a great promise as a novel therapeutic target for MI.
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Affiliation(s)
- Kai-You Song
- Department of Cardiology, Linyi People's Hospital, Linyi, China
| | - Xian-Zhao Zhang
- Department of Cardiology, Linyi People's Hospital, Linyi, China
| | - Feng Li
- Clinical Laboratory, The Third People's Hospital of Linyi, Linyi, China
| | - Qing-Rong Ji
- Department of Cardiology, Linyi People's Hospital, Linyi, China
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21
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Shi C, Wu H, Xu K, Cai T, Qin K, Wu L, Cai B. Liquiritigenin-Loaded Submicron Emulsion Protects Against Doxorubicin-Induced Cardiotoxicity via Antioxidant, Anti-Inflammatory, and Anti-Apoptotic Activity. Int J Nanomedicine 2020; 15:1101-1115. [PMID: 32110010 PMCID: PMC7034974 DOI: 10.2147/ijn.s235832] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 02/01/2020] [Indexed: 12/15/2022] Open
Abstract
Background The clinical use of doxorubicin (DOX) is severely limited due to its cardiotoxicity. Thus, there is a need for prophylactic and treatment strategies against DOX-induced cardiotoxicity. Purpose The purpose of this study was to develop a liquiritigenin-loaded submicron emulsion (Lq-SE) with enhanced oral bioavailability and to explore its efficacy against DOX-induced cardiotoxicity. Methods Lq-SE was prepared using high-pressure homogenization and characterized using several analytical techniques. The formulation was optimized by central composite design response surface methodology (CCD-RSM). In vivo pharmacokinetic studies, biochemical analyses, reactive oxygen species (ROS) assays, histopathologic assays, and Western blot analyses were performed. Results Each Lq-SE droplet had a mean particle size of 221.7 ± 5.80 nm, a polydispersity index (PDI) of 0.106 ± 0.068 and a zeta potential of -28.23 ± 0.42 mV. The area under the curve (AUC) of Lq-SE was 595% higher than that of liquiritigenin (Lq). Lq-SE decreased the release of serum cardiac enzymes and ameliorated histopathological changes in the hearts of DOX-challenged mice. Lq-SE significantly reduced oxidative stress by adjusting the levels of ROS, increasing the activity of antioxidative enzymes and inhibiting the protein expression of NOX4 and NOX2. Furthermore, Lq-SE significantly improved the inflammatory response through the mitogen-activated protein kinase (MAPK)/nuclear factor-κB (NF-κB) signalling pathway and induced cardiomyocyte apoptosis. Conclusion Lq-SE could be used as an effective cardioprotective agent against DOX in chemotherapy to enable better treatment outcomes.
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Affiliation(s)
- Changcan Shi
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210046, People's Republic of China
| | - Hongjuan Wu
- Nanjing Jiangning District Hospital of Traditional Chinese Medicine, Nanjing 211100, People's Republic of China
| | - Ke Xu
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Ting Cai
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Kunming Qin
- Nanjing Haichang Chinese Medicine Group Corporation, Nanjing 210061, People's Republic of China
| | - Li Wu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210046, People's Republic of China
| | - Baochang Cai
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210046, People's Republic of China.,Nanjing Haichang Chinese Medicine Group Corporation, Nanjing 210061, People's Republic of China
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22
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Aziz MM, Abd El Fattah MA, Ahmed KA, Sayed HM. Protective effects of olmesartan and l-carnitine on doxorubicin-induced cardiotoxicity in rats. Can J Physiol Pharmacol 2019; 98:183-193. [PMID: 31665614 DOI: 10.1139/cjpp-2019-0299] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Doxorubicin (DOX), an anthracycline antibiotic, is an important antineoplastic agent due to its high antitumor efficacy in hematological as well as in solid malignancies. The clinical use of DOX is limited due to its cardiotoxic effects. The present study aimed to investigate the possible protective effect of olmesartan (Olm), l-carnitine (L-CA), and their combination in cardiotoxicity induced by DOX in rats. Male albino rats were randomly divided into seven experimental groups (n = 8): group I: normal control, group II: L-CA, group III: Olm, group IV: DOX. The other three groups were treated with Olm (10 mg/kg), L-CA (300 mg/kg), and their combination for 2 weeks after induction of cardiotoxicity by a single dose of DOX (20 mg/kg). In the results, DOX showed a significant elevation in serum troponin I, creatine kinase-MB (CK-MB), and lactate dehydrogenase (LDH) together with increased inflammation manifested by the rise of tumor necrosis factor-alpha (TNF-α), intercellular adhesion molecules-1 (ICAM-1), interleukin IL-1β (IL-1β), myeloperoxidase (MPO), nuclear factor-kappa B (NF-κB), and transforming growth factor beta (TGF-β) in cardiac tissues as well as DOX-induced oxidative stress by increasing in malondialdehyde (MDA) and decreasing in superoxide dismutase (SOD) and glutathione (GSH) in heart tissues. In addition, caspase-3 activity was boosted as indication of increased apoptosis. On the other hand, administration of L-CA and Olm attenuated the DOX-evoked disturbances in the abovementioned parameters. In addition, DOX exhibited echocardiographic changes and severe histopathological changes, which were significantly reversed by L-CA and Olm treatment. In conclusion, the present study data confirm the protective role of L-CA and Olm in DOX-induced cardiotoxicity, which may be related to its antioxidant, antiinflammatory, and antiapoptotic agents.
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Affiliation(s)
- Malek M Aziz
- Faculty of Medicine and Health Science, Thamar University, Yemen
| | - Mai A Abd El Fattah
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr Al-Aini St., Cairo 11562, Egypt
| | - Kawkab A Ahmed
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - Helmy M Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr Al-Aini St., Cairo 11562, Egypt
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23
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Liberale L, Carbone F, Camici GG, Montecucco F. IL-1β and Statin Treatment in Patients with Myocardial Infarction and Diabetic Cardiomyopathy. J Clin Med 2019; 8:jcm8111764. [PMID: 31652822 PMCID: PMC6912287 DOI: 10.3390/jcm8111764] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/18/2019] [Accepted: 10/21/2019] [Indexed: 12/17/2022] Open
Abstract
Statins are effective lipid-lowering drugs with a good safety profile that have become, over the years, the first-line therapy for patients with dyslipidemia and a real cornerstone of cardiovascular (CV) preventive therapy. Thanks to both cholesterol-related and “pleiotropic” effects, statins have a beneficial impact against CV diseases. In particular, by reducing lipids and inflammation statins, they can influence the pathogenesis of both myocardial infarction and diabetic cardiomyopathy. Among inflammatory mediators involved in these diseases, interleukin (IL)-1β is a pro-inflammatory cytokine that recently been shown to be an effective target in secondary prevention of CV events. Statins are largely prescribed to patients with myocardial infarction and diabetes, but their effects on IL-1β synthesis and release remain to be fully characterized. Of interest, preliminary studies even report IL-1β secretion to rise after treatment with statins, with a potential impact on the inflammatory microenvironment and glycemic control. Here, we will summarize evidence of the role of statins in the prevention and treatment of myocardial infarction and diabetic cardiomyopathy. In accordance with the dual lipid-lowering and anti-inflammatory effect of these drugs and in light of the important results achieved by IL-1β inhibition through canakinumab in CV secondary prevention, we will dissect the current evidence linking statins with IL-1β and outline the possible benefits of a potential double treatment with statins and canakinumab.
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Affiliation(s)
- Luca Liberale
- Center for Molecular Cardiology, University of Zürich, Schlieren, 8092, Switzerland.
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy.
| | - Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy.
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, 16132 Genoa, Italy.
| | - Giovanni G Camici
- Center for Molecular Cardiology, University of Zürich, Schlieren, 8092, Switzerland.
- University Heart Center, Department of Cardiology, University Hospital Zurich, 8001 Zurich, Switzerland.
- Department of Research and Education, University Hospital Zurich, 8001 Zurich, Switzerland.
| | - Fabrizio Montecucco
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, 16132 Genoa, Italy.
- First Clinic of Internal Medicine, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, University of Genoa, 16132 Genoa, Italy.
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24
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Li H, Dai B, Fan J, Chen C, Nie X, Yin Z, Zhao Y, Zhang X, Wang DW. The Different Roles of miRNA-92a-2-5p and let-7b-5p in Mitochondrial Translation in db/db Mice. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 17:424-435. [PMID: 31319246 PMCID: PMC6637210 DOI: 10.1016/j.omtn.2019.06.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 12/21/2022]
Abstract
Excessive reactive oxygen species (ROS) generated in mitochondria is known to be a causal event in diabetic cardiomyopathy. Recent studies suggest that microRNAs (miRNAs) are able to translocate to mitochondria to modulate mitochondrial activities, but the roles of such miRNAs in diabetic cardiomyopathy remain unclear. We observed a marked reduction of mitochondrial gene cytochrome-b (mt-Cytb) in the heart of db/db mice compared with controls. Downregulation of mt-Cytb by small interfering RNA (siRNA) recaptured some key features of diabetes, including elevated ROS production. Microarray revealed that none of the miRNAs were upregulated, but 14 miRNAs were downregulated in mitochondria of db/db heart. miR-92a-2-5p and let-7b-5p targeted mt-Cytb and positively modulated mt-Cytb expression. Re-expression of miR-92a-2-5p and let-7b-5p into cardiomyocytes led to reduced ROS production. Furthermore, recombinant adeno-associated virus (rAAV)-mediated delivery of miR-92a-2-5p, but not let-7b-5p, was sufficient to rescue cardiac diastolic dysfunction in db/db heart. Let-7b-5p not only upregulated mt-Cytb in mitochondria, but also downregulated insulin receptor substrate 1 in cytosol and finally lead to no efficiency for improvement of diastolic dysfunction in db/db mice. Our findings demonstrate that reduced mitochondrial miRNAs contribute to impaired mitochondrial gene expression and elevated ROS production. Re-expression of miR-92a-2-5p enhances mitochondrial translation and reduces ROS production and lipid deposition, which finally rescues diabetic cardiomyopathy.
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Affiliation(s)
- Huaping Li
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China.
| | - Beibei Dai
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Jiahui Fan
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Chen Chen
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Xiang Nie
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Zhongwei Yin
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Yanru Zhao
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Xudong Zhang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China
| | - Dao Wen Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan 430030, China.
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25
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Abstract
Inflammatory processes underlie many diseases associated with injury of the heart muscle, including conditions without an obvious inflammatory pathogenic component such as hypertensive and diabetic cardiomyopathy. Persistence of cardiac inflammation can cause irreversible structural and functional deficits. Some are induced by direct damage of the heart muscle by cellular and soluble mediators but also by metabolic adaptations sustained by the inflammatory microenvironment. It is well established that both cardiomyocytes and immune cells undergo metabolic reprogramming in the site of inflammation, which allow them to deal with decreased availability of nutrients and oxygen. However, like in cancer, competition for nutrients and increased production of signalling metabolites such as lactate initiate a metabolic cross-talk between immune cells and cardiomyocytes which, we propose, might tip the balance between resolution of the inflammation versus adverse cardiac remodeling. Here we review our current understanding of the metabolic reprogramming of both heart tissue and immune cells during inflammation, and we discuss potential key mechanisms by which these metabolic responses intersect and influence each other and ultimately define the prognosis of the inflammatory process in the heart.
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Affiliation(s)
- Federica M Marelli-Berg
- William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom.,Centre for Inflammation and Therapeutic Innovation, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
| | - Dunja Aksentijevic
- School of Biological and Chemical Sciences, Queen Mary University of London, G.E. Fogg Building, Mile End Road, London E1 4NS, United Kingdom.,Centre for Inflammation and Therapeutic Innovation, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
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26
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Nakamura M, Sadoshima J. Cardiomyopathy in obesity, insulin resistance and diabetes. J Physiol 2019; 598:2977-2993. [PMID: 30869158 DOI: 10.1113/jp276747] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 02/25/2019] [Indexed: 12/17/2022] Open
Abstract
The prevalence of obesity, insulin resistance and diabetes is increasing rapidly. Most patients with these disorders have hypertriglyceridaemia and increased plasma levels of fatty acids, which are taken up and stored in lipid droplets in the heart. Intramyocardial lipids that exceed the capacity for storage and oxidation can be lipotoxic and induce non-ischaemic and non-hypertensive cardiomyopathy, termed diabetic or lipotoxic cardiomyopathy. The clinical features of diabetic cardiomyopathy are cardiac hypertrophy and diastolic dysfunction, which lead to heart failure, especially heart failure with preserved ejection fraction. Although the pathogenesis of the cardiomyopathy is multifactorial, diabetic dyslipidaemia and intramyocardial lipid accumulation are the key pathological features, triggering cellular signalling and modifications of proteins and lipids via generation of toxic metabolic intermediates. Most clinical studies have shown no beneficial effect of anti-diabetic agents and statins on outcomes in heart failure patients without atherosclerotic diseases, indicating the importance of identifying underlying mechanisms and early interventions for diabetic cardiomyopathy. Here, we summarize the molecular mechanisms of diabetic cardiomyopathy, with a special emphasis on cardiac lipotoxicity, and discuss the role of peroxisome proliferator-activated receptor α and dysregulated fatty acid metabolism as potential therapeutic targets.
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Affiliation(s)
- Michinari Nakamura
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, 185 South Orange Ave, Newark, NJ, 07103, USA
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, 185 South Orange Ave, Newark, NJ, 07103, USA
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27
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Al Zoubi S, Chen J, Murphy C, Martin L, Chiazza F, Collotta D, Yaqoob MM, Collino M, Thiemermann C. Linagliptin Attenuates the Cardiac Dysfunction Associated With Experimental Sepsis in Mice With Pre-existing Type 2 Diabetes by Inhibiting NF-κB. Front Immunol 2018; 9:2996. [PMID: 30619349 PMCID: PMC6305440 DOI: 10.3389/fimmu.2018.02996] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 12/04/2018] [Indexed: 01/04/2023] Open
Abstract
The mortality rate of patients who develop sepsis-related cardiac dysfunction is high. Many disease conditions (e.g., diabetes) increase the susceptibility to infections and subsequently sepsis. Activation of the NF-κB pathway plays a crucial role in the pathophysiology of sepsis-associated cardiac dysfunction and diabetic cardiomyopathy. The effect of diabetes on outcomes in patients with sepsis is still highly controversial. We here hypothesized that type 2 diabetes (T2DM) augments the cardiac (organ) dysfunction associated with sepsis, and that inhibition of the NF-κB pathway with linagliptin attenuates the cardiac (organ) dysfunction in mice with T2DM/sepsis. To investigate this, 10-week old male C57BL/6 mice were randomized to receive normal chow or high fat diet (HFD), 60% of calories derived from fat). After 12 weeks, mice were subjected to sham surgery or cecal ligation and puncture (CLP) for 24 h. At 1 hour after surgery, mice were treated with linagliptin (10 mg/kg, i.v.), IKK-16 (1 mg/kg, i.v.), or vehicle (2% DMSO, 3 ml/kg, i.v.). Mice also received analgesia, fluids and antibiotics at 6 and 18 h after surgery. Mice that received HFD showed a significant increase in body weight, impairment in glucose tolerance, reduction in ejection fraction (%EF), and increase in alanine aminotransferase (ALT). Mice on HFD subjected to CLP showed further reduction in %EF, increase in ALT, developed acute kidney dysfunction and lung injury. They also showed significant increase in NF-κB pathway, iNOS expression, and serum inflammatory cytokines compared to sham surgery group. Treatment of HFD-CLP mice with linagliptin or IKK-16 resulted in significant reductions in (i) cardiac, liver, kidney, and lung injury associated with CLP-sepsis, (ii) NF-κB activation and iNOS expression in the heart, and (iii) serum inflammatory cytokine levels compared to HFD-CLP mice treated with vehicle. Our data show that pre-existing type 2 diabetes phenotype worsens the organ dysfunction/injury associated with CLP-sepsis in mice. Most notably, inhibition of NF-κB reduces the organ dysfunction/injury associated with sepsis in mice with pre-existing T2DM.
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Affiliation(s)
- Sura Al Zoubi
- Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Jianmin Chen
- Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Catherine Murphy
- Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Lukas Martin
- Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Fausto Chiazza
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Debora Collotta
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Muhammad M Yaqoob
- Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Massimo Collino
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Christoph Thiemermann
- Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
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28
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Zhang QL, Yang JJ, Zhang HS. Carvedilol (CAR) combined with carnosic acid (CAA) attenuates doxorubicin-induced cardiotoxicity by suppressing excessive oxidative stress, inflammation, apoptosis and autophagy. Biomed Pharmacother 2018; 109:71-83. [PMID: 30396094 DOI: 10.1016/j.biopha.2018.07.037] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 07/07/2018] [Accepted: 07/07/2018] [Indexed: 01/10/2023] Open
Abstract
Doxorubicin (DOX) is a wide spectrum antitumor drug. However, its clinical application is limited due to the cardiotoxicity. Carvedilol (CAR) is a β-blocker used to treat high blood pressure and heart failure. Accordingly, supplementation with natural antioxidants or plant extracts exerts protective effects against various injury in vivo. Carnosic acid (CAA), the principal constituent of rosemary, has various biological activities, including antioxidant, antitumor, and anti-inflammatory. Here, heart injury mouse model was established using DOX (20 mg/kg) in vivo. And cardiac muscle cell line of H9C2 was subjected to 0.5 μM of DOX for 24 h in vitro. Then, the protective effects of CAA and CAR alone, or the two in combination on DOX-induced cardiotoxicity in vivo and in vitro were explored. The results indicated that both CAA and CAR, when used alone, were moderately effective in attenuating DOX-induced cardiotoxicity. The combination of two drugs functioned synergistically to ameliorate cardiac injury caused by DOX, as evidenced by the significantly reduced collagen accumulation and improved dysfunction of heart. CAA and CAR exhibited stronger anti-oxidative role in DOX-treated mice partly by augmenting the expression and activities of the anti-oxidative enzymes. In addition, inflammatory response was significantly suppressed by the two in combination, proved by the decreased pro-inflammatory cytokines (COX2, TNF-α, IL-6, IL-1β and IL-18), which was associated with the inactivation of nuclear factor κB (NF-κB). Furthermore, DOX-stirred apoptosis and autophagy were dramatically attenuated by the co-treatments of CAA and CAR through down-regulating cleaved Caspase-3 and LC3B signaling pathways. The effects of CAA and CAR combination against cardiotoxicity were observed in H9C2 cells with DOX stimulation. Our findings above suggested that the use of CAR and CAA in combination could be expected to have synergistic efficacy and significant potential against cardiotoxicity induced by DOX.
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Affiliation(s)
- Qiu-Lan Zhang
- Department of Cardiology, Jining Second People's Hospital, Jining 272000, China
| | - Jing-Jie Yang
- Department of Emergency, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Hong-Sheng Zhang
- Department of Cardiology, Affiliated Hospital of Jining Medical University, 272000, China.
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29
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Jia G, Aroor AR, Hill MA, Sowers JR. Role of Renin-Angiotensin-Aldosterone System Activation in Promoting Cardiovascular Fibrosis and Stiffness. Hypertension 2018; 72:537-548. [PMID: 29987104 PMCID: PMC6202147 DOI: 10.1161/hypertensionaha.118.11065] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Guanghong Jia
- Diabetes and Cardiovascular Research Center, University of Missouri School of Medicine, Columbia, MO, 65212, USA
- Research Service, Truman Memorial Veterans Hospital, Columbia, MO, 65201, USA
| | - Annayya R. Aroor
- Diabetes and Cardiovascular Research Center, University of Missouri School of Medicine, Columbia, MO, 65212, USA
- Research Service, Truman Memorial Veterans Hospital, Columbia, MO, 65201, USA
| | - Michael A. Hill
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, MO, 65212, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, 65211, USA
| | - James R. Sowers
- Diabetes and Cardiovascular Research Center, University of Missouri School of Medicine, Columbia, MO, 65212, USA
- Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, MO, 65212, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, 65211, USA
- Research Service, Truman Memorial Veterans Hospital, Columbia, MO, 65201, USA
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30
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Peterson JM, Wang DJ, Shettigar V, Roof SR, Canan BD, Bakkar N, Shintaku J, Gu JM, Little SC, Ratnam NM, Londhe P, Lu L, Gaw CE, Petrosino JM, Liyanarachchi S, Wang H, Janssen PML, Davis JP, Ziolo MT, Sharma SM, Guttridge DC. NF-κB inhibition rescues cardiac function by remodeling calcium genes in a Duchenne muscular dystrophy model. Nat Commun 2018; 9:3431. [PMID: 30143619 PMCID: PMC6109146 DOI: 10.1038/s41467-018-05910-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 07/25/2018] [Indexed: 12/20/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is a neuromuscular disorder causing progressive muscle degeneration. Although cardiomyopathy is a leading mortality cause in DMD patients, the mechanisms underlying heart failure are not well understood. Previously, we showed that NF-κB exacerbates DMD skeletal muscle pathology by promoting inflammation and impairing new muscle growth. Here, we show that NF-κB is activated in murine dystrophic (mdx) hearts, and that cardiomyocyte ablation of NF-κB rescues cardiac function. This physiological improvement is associated with a signature of upregulated calcium genes, coinciding with global enrichment of permissive H3K27 acetylation chromatin marks and depletion of the transcriptional repressors CCCTC-binding factor, SIN3 transcription regulator family member A, and histone deacetylase 1. In this respect, in DMD hearts, NF-κB acts differently from its established role as a transcriptional activator, instead promoting global changes in the chromatin landscape to regulate calcium genes and cardiac function.
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Affiliation(s)
- Jennifer M Peterson
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Pharmacy and Pharmaceutical Sciences, SUNY Binghamton University, Binghamton, NY, 13902, USA
| | - David J Wang
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina, 29425, USA
| | - Vikram Shettigar
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Physiology and Cell Biology, The Ohio State University Medical Center, Columbus, 43210, Ohio, USA
| | - Steve R Roof
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Physiology and Cell Biology, The Ohio State University Medical Center, Columbus, 43210, Ohio, USA.,Q Test Labs, Columbus, OH, 43235, USA
| | - Benjamin D Canan
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Physiology and Cell Biology, The Ohio State University Medical Center, Columbus, 43210, Ohio, USA
| | - Nadine Bakkar
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Neurobiology, St Joseph's Hospital and Medical Center-Barrow Neurological Institute, Phoenix, AZ, 85013, USA
| | - Jonathan Shintaku
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Jin-Mo Gu
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Biomedical Engineering and Pediatrics, Emory University, Decatur, GA, 30322, USA
| | - Sean C Little
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Physiology and Cell Biology, The Ohio State University Medical Center, Columbus, 43210, Ohio, USA.,Bristol-Myers Squibb, Wallingford, CT, 06492, USA
| | - Nivedita M Ratnam
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA
| | - Priya Londhe
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Molecular Oncology Research Institute, Tufts Medical Center, Boston, MA, 02111, USA
| | - Leina Lu
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Christopher E Gaw
- The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Jennifer M Petrosino
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA
| | - Sandya Liyanarachchi
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA
| | - Huating Wang
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Paul M L Janssen
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Physiology and Cell Biology, The Ohio State University Medical Center, Columbus, 43210, Ohio, USA
| | - Jonathan P Davis
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Physiology and Cell Biology, The Ohio State University Medical Center, Columbus, 43210, Ohio, USA
| | - Mark T Ziolo
- Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA.,The Ohio State University Medical Center, Columbus, OH, 43210, USA.,Department of Physiology and Cell Biology, The Ohio State University Medical Center, Columbus, 43210, Ohio, USA
| | - Sudarshana M Sharma
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Denis C Guttridge
- Department of Cancer Biology and Genetics, Columbus, OH, 43210, USA. .,Center for Muscle Health and Neuromuscular Disorders, Columbus, OH, 43210, USA. .,The Ohio State University Medical Center, Columbus, OH, 43210, USA. .,Department of Pediatrics, Medical University of South Carolina, Charleston, South Carolina, 29425, USA.
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31
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Chen H, Zhou W, Ruan Y, Yang L, Xu N, Chen R, Yang R, Sun J, Zhang Z. Reversal of angiotensin ll-induced β-cell dedifferentiation via inhibition of NF-κb signaling. Mol Med 2018; 24:43. [PMID: 30134927 PMCID: PMC6092859 DOI: 10.1186/s10020-018-0044-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 07/30/2018] [Indexed: 12/11/2022] Open
Abstract
Background Type 2 diabetes mellitus (T2DM) is characterized by pancreatic β-cell failure, which arises from metabolic stress and results in β cell dedifferentiation, leading to β-cell death. Pathological activation of the renin–angiotensin system (RAS) contributes to increase cell stress, while RAS intervention reduces the onset of T2DM in high-risk populations and promotes insulin secretion in rodents. In this study, we investigated whether and how RAS induces β-cell dedifferentiation and the mechanism underlying this process. Methods In vitro, with the methods of quantitative real-time reverse transcriptase-PCR (qRT-PCR) and western blotting, we examined the change of cell identity-related gene expression, progenitor like gene expression, cellular function, and nuclear factor kappa b (NF-κb) signaling activity in β cell lines after exposure to angiotensin II (AngII) and disruption of RAS. In vivo, parallel studies were performed using db/db mice. Related protein expression was detected by Immunofluorescence analysis. Result Activation of RAS induced dedifferentiation and impaired insulin secretion, eventually leading to β-cell failure. Mechanistically, Angll induced β-cell dedifferentiation via NF-κb signaling, while treatment with lrbesartan and sc-514 reversed the progenitor state of β cells. Conclusion The present study found that RAS might induce β-cell dedifferentiation via angiotensin II receptor type 1 activation, which was promoted by NF-κb signaling. Therefore, blocking RAS or NF-kb signaling efficiently reversed the dedifferentiated status of β cells, suggesting a potential therapy for patients with type 2 diabetes. Electronic supplementary material The online version of this article (10.1186/s10020-018-0044-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hong Chen
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China
| | - Wenjun Zhou
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China
| | - Yuting Ruan
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China
| | - Lei Yang
- Department of Nephrology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China
| | - Ningning Xu
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China
| | - Rongping Chen
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China
| | - Rui Yang
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China
| | - Jia Sun
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China.
| | - Zhen Zhang
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, 253, Gongyedadao Middle, Guangzhou, Guangdong, 510282, People's Republic of China.
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32
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Bulani Y, Srinivasan K, Sharma SS. Attenuation of type-1 diabetes-induced cardiovascular dysfunctions by direct thrombin inhibitor in rats: a mechanistic study. Mol Cell Biochem 2018; 451:69-78. [PMID: 29971544 DOI: 10.1007/s11010-018-3394-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 06/26/2018] [Indexed: 01/04/2023]
Abstract
Chronic diabetes is associated with ventricular dysfunctions in the absence of hypertension and coronary artery diseases. This condition is termed as diabetic cardiomyopathy (DCM). There is no favourable treatment available for the management of diabetic cardiomyopathy. Recent studies have reported increase in circulating thrombin level among diabetic patients which is responsible for hypercoagulability of blood. Thrombin induces inflammation and fibrosis, and enhances cardiac cell growth and contractility in vitro. In this study, we have investigated the effects of argatroban; a direct thrombin inhibitor against DCM in streptozotocin-induced type-1 diabetes. Diabetes was induced by single dose of streptozotocin (STZ; 50 mg/kg, i.p.) in male Sprague-Dawley rats. After 4 weeks of diabetes induction, the animals were treated with argatroban (0.3 and 1 mg/kg, i.p. daily) for the next 4 weeks. The effect of argatroban was evaluated against diabetes-associated cardiac dysfunction, structural alteration and protein expression. STZ-induced diabetic rats exhibited significant decline in left ventricular functions. Four weeks of treatments with argatroban significantly improved ventricular functions without affecting heart rate. Further, it also protected heart against structural changes induced by diabetes as shown by reduction in fibrosis, hypertrophy and apoptosis. The improvement in cardiac functions and structural changes was associated with significant reduction in left ventricular expression of thrombin receptor also termed as protease-activated receptor-1 or PAR1, p-AKT (ser-473), p-50 NFκB and caspase-3 proteins. This study demonstrates beneficial effects of argatroban via improvement in cardiac functions and structural changes in STZ-induced DCM. These effects may be attributed through reduction in cardiac inflammation, fibrosis and apoptosis.
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Affiliation(s)
- Yogesh Bulani
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, 160062, Punjab, India
| | - Krishnamoorthy Srinivasan
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, 160062, Punjab, India
| | - Shyam Sunder Sharma
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar, Mohali, 160062, Punjab, India.
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33
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Tang SG, Liu XY, Ye JM, Hu TT, Yang YY, Han T, Tan W. Isosteviol ameliorates diabetic cardiomyopathy in rats by inhibiting ERK and NF-κB signaling pathways. J Endocrinol 2018; 238:47-60. [PMID: 29720537 DOI: 10.1530/joe-17-0681] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 04/16/2018] [Indexed: 12/23/2022]
Abstract
Diabetes-induced injury of myocardium, defined as diabetic cardiomyopathy (DCM), accounts for significant mortality and morbidity in diabetic population. Alleviation of DCM by a potent drug remains considerable interests in experimental and clinical researches because hypoglycemic drugs cannot effectively control this condition. Here, we explored the beneficial effects of isosteviol sodium (STVNa) on type 1 diabetes-induced DCM and the potential mechanisms involved. Male Wistar rats were induced to diabetes by injection of streptozotocin (STZ). One week later, diabetic rats were randomly grouped to receive STVNa (STZ/STVNa) or its vehicle (STZ). After 11 weeks of treatment or 11 weeks treatment following 4 weeks of removal of the treatment, the cardiac function and structure were evaluated and related mechanisms were investigated. In diabetic rats, oxidative stress, inflammation, blood glucose and plasma advanced glycation end products (AGEs) were significantly increased, whereas superoxide dismutase 2 (SOD-2) expression and activity were decreased. STVNa treatment inhibited cardiac hypertrophy, fibrosis and inflammation, showed similar ratio of heart to body weight and antioxidant capacities almost similar to the normal controls, which can be sustained at least 4 weeks. Moreover, STVNa inhibited diabetes-inducted stimulation of both extracellular signal-regulated kinase (ERK) and nuclear factor κB (NF-κB) signal pathways. However, blood glucose, plasma AGE and insulin levels were not altered by STVNa treatment. These results indicate that STVNa may be developed into a potent therapy for DCM. The mechanism underlying this therapeutic effect involves the suppression of oxidative stress and inflammation by inhibiting ERK and NF-κB without changing blood glucose or AGEs.
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Affiliation(s)
- Sheng-Gao Tang
- School of Bioscience and BioengineeringSouth China University of Technology, Guangzhou, China
| | - Xiao-Yu Liu
- School of Bioscience and BioengineeringSouth China University of Technology, Guangzhou, China
| | - Ji-Ming Ye
- Molecular Pharmacology for DiabetesSchool of Health and Biomedical Sciences, RMIT University, Melbourne, Victoria, Australia
| | - Ting-Ting Hu
- School of Bioscience and BioengineeringSouth China University of Technology, Guangzhou, China
| | - Ying-Ying Yang
- School of Bioscience and BioengineeringSouth China University of Technology, Guangzhou, China
| | - Ting Han
- School of Bioscience and BioengineeringSouth China University of Technology, Guangzhou, China
| | - Wen Tan
- Institute of Biomedical & Pharmaceutical ScienceGuangdong University of Technology, Guangzhou, China
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34
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Andrographolide Ameliorates Diabetic Cardiomyopathy in Mice by Blockage of Oxidative Damage and NF- κB-Mediated Inflammation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:9086747. [PMID: 30046380 PMCID: PMC6036810 DOI: 10.1155/2018/9086747] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/06/2018] [Accepted: 04/12/2018] [Indexed: 12/12/2022]
Abstract
Andrographolide (Andro), a major bioactive component obtained from Andrographis paniculata Nees, has exerted wide antioxidant as well as cytoprotective properties. However, whether Andro treatment could retard the progress of diabetic cardiomyopathy (DCM) remains unknown. In this study, we evaluated the effects of Andro against diabetes-induced myocardial dysfunction and explored the underlying mechanism in STZ-induced diabetic mice. As a result, treatment with Andro dose dependently suppressed cardiac inflammation and oxidative stress, accompanied by decreasing cardiac apoptosis, which subsequently ameliorated cardiac fibrosis and cardiac hypertrophy. Further, Andro blocked hyperglycemia-triggered reactive oxygen species (ROS) generation by suppressing NADPH oxidase (NOX) activation and augmenting nuclear factor erythroid 2-related factor 2 (Nrf2) expression both in vitro and in vivo. Our results suggest that the cardioprotective effects afforded by Andro treatment involve the modulation of NOX/Nrf2-mediated oxidative stress and NF-κB-mediated inflammation. The present study unravels the therapeutic potential of Andro in the treatment of DCM by attenuating oxidative stress, inflammation, and apoptosis.
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35
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Yang L, Peng C, Xia J, Zhang W, Tian L, Tian Y, Yang X, Cao Y. Effects of icariside II ameliorates diabetic cardiomyopathy in streptozotocin-induced diabetic rats by activating Akt/NOS/NF-κB signaling. Mol Med Rep 2017; 17:4099-4105. [PMID: 29286100 DOI: 10.3892/mmr.2017.8342] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 10/10/2017] [Indexed: 11/06/2022] Open
Abstract
Icariside II is a flavonoid extracted from Epimedium that has antioxidant, anti‑inflammatory and antiapoptotic effects. The aim of the present study was to evaluate the effects icariside II on diabetic cardiomyopathy in streptozotocin-induced diabetic rats. Icariside II treatment improved body weight, heart/body weight ratio and fasting blood glucose in diabetic model rats. Icariside II was demonstrated to reduce the expression levels of creatine kinase and lactate dehydrogenase in serum, and to lower cardiac oxidative stress, inflammation and apoptosis levels in diabetic rats. Icariside II treatment induced phosphoinositide 3‑kinase and phosphorylated‑Akt expression, and suppressed inducible nitric oxide synthase (iNOS) and nuclear factor (NF)‑κB protein expression in diabetic rat. Results from the present study suggested that treatment with icariside II improved diabetic cardiomyopathy in streptozotocin‑induced diabetic rats by activating the Akt/NOS/NF‑κB pathway.
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Affiliation(s)
- Lu Yang
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
| | - Chaosheng Peng
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
| | - Jing Xia
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
| | - Wenluo Zhang
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
| | - Li Tian
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
| | - Yuhong Tian
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
| | - Xiaobin Yang
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
| | - Yuean Cao
- Special Care Medical Center, Navy General Hospital of PLA, Beijing 100048, P.R. China
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36
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Tie Y, Zhai C, Zhang Y, Qin X, Yu F, Li H, Shan M, Zhang C. CCAAT/enhancer-binding protein β overexpression alleviates myocardial remodelling by regulating angiotensin-converting enzyme-2 expression in diabetes. J Cell Mol Med 2017; 22:1475-1488. [PMID: 29266779 PMCID: PMC5824391 DOI: 10.1111/jcmm.13406] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 09/01/2017] [Indexed: 12/27/2022] Open
Abstract
Diabetic cardiomyopathy, a major cardiac complication, contributes to heart remodelling and heart failure. Our previous study discovered that CCAAT/enhancer-binding protein β (C/EBPβ), a transcription factor that belongs to a family of basic leucine zipper transcription factors, interacts with the angiotensin-converting enzyme 2 (ACE2) promoter sequence in other disease models. Here, we aimed to determine the role of C/EBPβ in diabetes and whether ACE2 expression is regulated by C/EBPβ. A type 1 diabetic mouse model was generated by an intraperitoneal injection of streptozotocin. Diabetic mice were injected with a lentivirus expressing either C/EBPβ or sh-C/EBPβ or treated with valsartan after 12 weeks to observe the effects of C/EBPβ. In vitro, cardiac fibroblasts and cardiomyocytes were treated with high glucose (HG) to investigate the anti-fibrosis, anti-apoptosis and regulatory mechanisms of C/EBPβ. C/EBPβ expression was down-regulated in diabetic mice and HG-induced cardiac neonatal cells. C/EBPβ overexpression significantly attenuated collagen deposition and cardiomyocyte apoptosis by up-regulating ACE2 expression. The molecular mechanism involved the binding of C/EBPβ to the ACE2 promoter sequence. Although valsartan, a classic angiotensin receptor blocker, relieved diabetic complications, the up-regulation of ACE2 expression by C/EBPβ overexpression may exert greater beneficial effects on patients with diabetic cardiomyopathy.
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Affiliation(s)
- Yuanyuan Tie
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Chungang Zhai
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Ya Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Xiaoteng Qin
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Fangpu Yu
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Hongxuan Li
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - MeiRong Shan
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Cheng Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital of Shandong University, Jinan, Shandong, China
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37
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Yan F, Sun X, Xu C. Protective effects of resveratrol improve cardiovascular function in rats with diabetes. Exp Ther Med 2017; 15:1728-1734. [PMID: 29434758 DOI: 10.3892/etm.2017.5537] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 03/17/2017] [Indexed: 01/26/2023] Open
Abstract
Resveratrol is a flavonoid with a stilbene structure that is able to suppress acute pulmonary thromboembolism-induced pulmonary artery hypertension. Furthermore, it possesses anti-cancer and antioxidant properties, is able to regulate blood lipids and increase life expectancy. In the present study, it was evaluated whether the protective effect of resveratrol was able to improve cardiovascular function in rats with diabetes. The effects of resveratrol on blood glucose, body weight, heart/body weight ratio, plasma triglyceride levels, heart rate, aspartate transaminase (AST)/alanine transaminase (ALT) ratio and total plasma insulin were evaluated. Levels of inflammation and oxidative stress were also evaluated using ELISA kits, and the expressions of endothelial nitric oxide synthase (eNOS), vascular endothelial growth factor (VEGF) and phosphorylated (p)-p38 protein were evaluated via western blot analysis. The results demonstrated that administration of resveratrol in rats with diabetes-related myocardial infarction (DRMI) significantly reduced blood glucose, body weight, plasma triglyceride levels, heart rate and AST/ALT ratio (all P<0.01) and significantly increased total plasma insulin (P<0.01). Furthermore, resveratrol significantly reduced levels of inflammation factors (P<0.01) and malondialdehyde, a marker for oxidative stress, in rats with DRMI (P<0.01). Resveratrol significantly increased the expression of eNOS (P<0.01) and suppressed the expression of VEGF and p-p38 (both P<0.01) in rats with DRMI. These results suggest that treatment with resveratrol is able to improve cardiovascular function via inhibition of eNOS and VEGF, and suppression of p38 phosphorylation in rats with DRMI.
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Affiliation(s)
- Fuqin Yan
- Department of Pharmacy, China Armed Police General Hospital, Beijing 100039, P.R. China
| | - Xiaomeng Sun
- Department of Endocrinology, China Armed Police General Hospital, Beijing 100039, P.R. China
| | - Chun Xu
- Department of Endocrinology, China Armed Police General Hospital, Beijing 100039, P.R. China
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Frati G, Schirone L, Chimenti I, Yee D, Biondi-Zoccai G, Volpe M, Sciarretta S. An overview of the inflammatory signalling mechanisms in the myocardium underlying the development of diabetic cardiomyopathy. Cardiovasc Res 2017; 113:378-388. [PMID: 28395009 DOI: 10.1093/cvr/cvx011] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/20/2017] [Indexed: 02/05/2023] Open
Abstract
Heart failure is a highly morbid and mortal clinical condition that represents the last stage of most cardiovascular disorders. Diabetes is strongly associated with an increased incidence of heart failure and directly promotes cardiac hypertrophy, fibrosis, and apoptosis. These changes, in turn, contribute to the development of ventricular dysfunction. The clinical condition associated with the spectrum of cardiac abnormalities induced by diabetes is termed diabetic cardiomyopathy. Myocardial inflammation has recently emerged as a pathophysiological process contributing to cardiac hypertrophy, fibrosis, and dysfunction in cardiac diseases. Myocardial inflammation is also implicated in the development of diabetic cardiomyopathy. Several molecular mechanisms link diabetes to myocardial inflammation. The NF-κB signalling pathway and the renin-angiotensin-aldosterone system are strongly activated in the diabetic heart, thereby promoting myocardial inflammation. Advanced glycation end-products and damage-associated molecular pattern molecules also represent strong triggers for inflammation. The mediators resulting from this inflammatory process modulate specific intracellular signalling mechanisms in cardiac cells that promote the development of diabetic cardiomyopathy. This review article will provide an overview of the signalling molecular mechanisms linking diabetic cardiomyopathy to myocardial inflammation.
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Affiliation(s)
- Giacomo Frati
- Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, 04100 Latina (LT), Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, 86077 Pozzilli (IS), Italy
| | - Leonardo Schirone
- Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, 04100 Latina (LT), Italy
| | - Isotta Chimenti
- Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, 04100 Latina (LT), Italy
| | - Derek Yee
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Giuseppe Biondi-Zoccai
- Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, 04100 Latina (LT), Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, 86077 Pozzilli (IS), Italy
| | - Massimo Volpe
- Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, 04100 Latina (LT), Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, 86077 Pozzilli (IS), Italy
| | - Sebastiano Sciarretta
- Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, Rome, 04100 Latina (LT), Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, 86077 Pozzilli (IS), Italy
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Guo Y, Zhuang X, Huang Z, Zou J, Yang D, Hu X, Du Z, Wang L, Liao X. Klotho protects the heart from hyperglycemia-induced injury by inactivating ROS and NF-κB-mediated inflammation both in vitro and in vivo. Biochim Biophys Acta Mol Basis Dis 2017; 1864:238-251. [PMID: 28982613 DOI: 10.1016/j.bbadis.2017.09.029] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 09/10/2017] [Accepted: 09/28/2017] [Indexed: 12/23/2022]
Abstract
Cardiac inflammation and oxidative stress play a key role in the pathogenesis of diabetic cardiomyopathy (DCM). The anti-aging protein Klotho has been found to protect cells from inflammation and oxidative stress. The current study aimed to explore the cardioprotective effects of Klotho on DCM and the underlying mechanisms. H9c2 cells and neonatal cardiomyocytes were incubated with 33mM glucose in the presence or absence of Klotho. Klotho pretreatment effectively inhibited high glucose-induced inflammation, ROS generation, apoptosis, mitochondrial dysfunction, fibrosis and hypertrophy in both H9c2 cells and neonatal cardiomyocytes. In STZ-induced type 1 diabetic mice, intraperitoneal injection of Klotho at 0.01mg/kg per 48h for 3months completely suppressed cardiac inflammatory cytokines and oxidative stress and prevented cardiac cell death and remodeling, which subsequently improved cardiac dysfunction without affecting hyperglycemia. This study revealed that Klotho may exert its protective effects by augmenting nuclear factor erythroid 2-related factor 2 (Nrf2) expression and inactivating nuclear factor κB (NF-κB) activation both in vitro and in vivo. Thus, this work demonstrated for the first time that the anti-aging protein Klotho may be a potential therapeutic agent to treat DCM by inhibiting oxidative stress and inflammation. We also demonstrated the critical roles of the Nrf2 and NF-κB pathways in diabetes-stimulated cardiac injuries and indicated that they may be key therapeutic targets for diabetic complications.
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Affiliation(s)
- Yue Guo
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China; Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, PR China
| | - Xiaodong Zhuang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Zena Huang
- Department of Critical Care Medicine and Emergency, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, PR China
| | - Jing Zou
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510630, PR China
| | - Daya Yang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Xun Hu
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Zhimin Du
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China
| | - Lichun Wang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China; Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, PR China.
| | - Xinxue Liao
- Department of Cardiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, PR China; Key Laboratory of Assisted Circulation, Ministry of Health, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong 510080, PR China.
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40
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Yang D, Liu W, Ma L, Wang Y, Ma J, Jiang M, Deng X, Huang F, Yang T, Chen M. Profilin‑1 contributes to cardiac injury induced by advanced glycation end‑products in rats. Mol Med Rep 2017; 16:6634-6641. [PMID: 28901418 PMCID: PMC5865800 DOI: 10.3892/mmr.2017.7446] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 07/20/2017] [Indexed: 12/21/2022] Open
Abstract
Cardiac injury, including hypertrophy and fibrosis, induced by advanced glycation end products (AGEs) has an important function in the onset and development of diabetic cardiomyopathy. Profilin-1, a ubiquitously expressed and multifunctional actin-binding protein, has been reported to be an important mediator in cardiac hypertrophy and fibrosis. However, whether profilin-1 is involved in AGE-induced cardiac hypertrophy and fibrosis remains to be determined. Therefore, the present study aimed to investigate the function of profilin-1 in cardiac injury induced by AGEs. The model of cardiac injury was established by chronic tail vein injection of AGEs (50 mg/kg/day for 8 weeks) in Sprague-Dawley rats. Rats were randomly assigned to control, AGEs, AGEs + profilin-1 shRNA adenovirus vectors (AGEs + S)or AGEs + control adenovirus vectors (AGEs + V) groups. Profilin-1 shRNA adenovirus vectors were injected via the tail vein to knockdown profilin-1 expression at a dose of 3×109 plaque forming units every 4 weeks. Echocardiography was performed to measure cardiac contractile function. Cardiac tissues were stained with Masson's trichrome stain to evaluate ventricular remodeling. The serum levels of procollagen type III N-terminal peptide were detected by ELISA. The expression of profilin-1, receptor for AGEs (RAGE), Rho, p65, atrial natriuretic peptide, β-myosin heavy chain, matrix metalloproteinase (MMP)-2 and MMP-9 were determined using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and/or western blot analysis and immunohistochemistry staining. The results demonstrated that chronic injection of exogenous AGEs led to cardiac dysfunction, hypertrophy and fibrosis, as determined by echocardiography, Masson trichrome staining and the expression of associated genes. The expression of profilin-1 was markedly increased in heart tissue at the mRNA and protein level following AGE administration, as determined by RT-qPCR and western blotting, which was further confirmed by immunohistochemistry staining. Furthermore, the expression of RAGE, Rho and p65 was also increased at the protein level. Notably, knockdown of profilin-1 expression ameliorated AGE-induced cardiac injury and reduced the expression of RAGE, Rho and p65. These results indicate an important role for profilin-1 in AGE-induced cardiac injury, which may provide a novel therapeutic target for patients with diabetic heart failure.
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Affiliation(s)
- Dafeng Yang
- Department of Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Weiwei Liu
- Department of Cardiology, The First Hospital of Changsha, Changsha, Hunan 410005, P.R. China
| | - Liping Ma
- Department of Cardiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Ya Wang
- Department of Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Jing Ma
- Department of Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Minna Jiang
- Department of Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Xu Deng
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410006, P.R. China
| | - Fang Huang
- Department of Cardiology, The First Hospital of Changsha, Changsha, Hunan 410005, P.R. China
| | - Tianlun Yang
- Department of Cardiology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Meifang Chen
- Department of Geriatric Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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41
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Naga Prasad SV, Gupta MK, Duan ZH, Surampudi VSK, Liu CG, Kotwal A, Moravec CS, Starling RC, Perez DM, Sen S, Wu Q, Plow EF, Karnik S. A unique microRNA profile in end-stage heart failure indicates alterations in specific cardiovascular signaling networks. PLoS One 2017; 12:e0170456. [PMID: 28329018 PMCID: PMC5362047 DOI: 10.1371/journal.pone.0170456] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 01/05/2017] [Indexed: 01/17/2023] Open
Abstract
It is well established that the gene expression patterns are substantially altered in cardiac hypertrophy and heart failure, however, less is known about the reasons behind such global differences. MicroRNAs (miRNAs) are short non-coding RNAs that can target multiple molecules to regulate wide array of proteins in diverse pathways. The goal of the study was to profile alterations in miRNA expression using end-stage human heart failure samples with an aim to build signaling network pathways using predicted targets for the altered miRNA and to determine nodal molecules regulating individual networks. Profiling of miRNAs using custom designed microarray and validation with an independent set of samples identified eight miRNAs that are altered in human heart failure including one novel miRNA yet to be implicated in cardiac pathology. To gain an unbiased perspective on global regulation by top eight altered miRNAs, functional relationship of predicted targets for these eight miRNAs were examined by network analysis. Ingenuity Pathways Analysis network algorithm was used to build global signaling networks based on the targets of altered miRNAs which allowed us to identify participating networks and nodal molecules that could contribute to cardiac pathophysiology. Majority of the nodal molecules identified in our analysis are targets of altered miRNAs and known regulators of cardiovascular signaling. Cardio-genomics heart failure gene expression public data base was used to analyze trends in expression pattern for target nodal molecules and indeed changes in expression of nodal molecules inversely correlated to miRNA alterations. We have used NF kappa B network as an example to show that targeting other molecules in the network could alter the nodal NF kappa B despite not being a miRNA target suggesting an integrated network response. Thus, using network analysis we show that altering key functional target proteins may regulate expression of the myriad signaling pathways underlying the cardiac pathology.
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Affiliation(s)
- Sathyamangla V. Naga Prasad
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Manveen K. Gupta
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Zhong-Hui Duan
- Department of Computer Sciences, University of Akron, Akron, Ohio, United States of America
| | - Venkata Suresh K. Surampudi
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Chang-Gong Liu
- Department of Molecular Virology, Immunology and Medical Genetics and Comprehensive Cancer Center, Ohio State University, Columbus, Ohio, United States of America
| | - Ashwin Kotwal
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Christine S. Moravec
- Department of Cardiovascular Medicine, Heart and Vascular Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Randall C. Starling
- Department of Cardiovascular Medicine, Heart and Vascular Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Dianne M. Perez
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Subha Sen
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Qingyu Wu
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Edward F. Plow
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Sadashiva Karnik
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
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Ghigo A, Frati G, Sciarretta S. A novel protective role for activating transcription factor 3 in the cardiac response to metabolic stress. Cardiovasc Res 2017; 113:113-114. [PMID: 28082449 DOI: 10.1093/cvr/cvw252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Alessandra Ghigo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, Torino 10126, Italy
| | - Giacomo Frati
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, Latina (LT) 04100, Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, Località Camerelle, Pozzilli (IS) 86077, Italy
| | - Sebastiano Sciarretta
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, Latina (LT) 04100, Italy; .,Department of AngioCardioNeurology, IRCCS Neuromed, Località Camerelle, Pozzilli (IS) 86077, Italy
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43
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Liu B, Yang L, Zhang B, Kuang C, Huang S, Guo R. NF-κB-Dependent Upregulation of NCX1 Induced by Angiotensin II Contributes to Calcium Influx in Rat Aortic Smooth Muscle Cells. Can J Cardiol 2016; 32:1356.e11-1356.e20. [DOI: 10.1016/j.cjca.2016.02.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 02/16/2016] [Accepted: 02/17/2016] [Indexed: 12/17/2022] Open
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Hamar P, Kerjaschki D. Blood capillary rarefaction and lymphatic capillary neoangiogenesis are key contributors to renal allograft fibrosis in an ACE inhibition rat model. Am J Physiol Heart Circ Physiol 2016; 311:H981-H990. [PMID: 27496878 DOI: 10.1152/ajpheart.00320.2016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 07/29/2016] [Indexed: 12/17/2022]
Abstract
Chronic allograft fibrosis is the major cause of graft loss in kidney transplantation. Progression can only be reduced by inhibition of the renin-angiotensin system (RAS). We tested the hypothesis that the protection provided by angiotensin-converting enzyme (ACE) inhibition also decreases capillary rarefaction, lymphangiogenesis, and podocyte injury in allograft fibrosis. Fisher kidneys were transplanted into bilaterally nephrectomized Lewis rats treated with enalapril (60 mg/kg per day) (ACE inhibitor, ACEi) or vehicle. Proteinuria, blood urea nitrogen, and plasma creatinine were regularly assessed, and grafts were harvested for morphological and immunohistological analysis at various times up to 32 wk. In the vehicle group, many new lymphatic capillaries and severe and diffuse mononuclear infiltration of allografts were observed already 1 wk after transplantation. Lymphangiogenesis increased until week 4, by which time inflammatory infiltration became focal. Lymphatic capillaries were often located at sites of inflammation. Progressive interstitial fibrosis, glomerulosclerosis, capillary rarefaction, and proteinuria appeared later, at weeks 4-12 The number of lymphatic capillary cross sections strongly correlated with the interstitial fibrosis score. Podoplanin immunostaining, a marker of healthy podocytes, disappeared from inflamed or sclerotic glomerular areas. ACEi protected from lymphangiogenesis and associated inflammation, preserved glomerular podoplanin protein expression, and reduced glomerulosclerosis, proteinuria, tubulointerstitial fibrosis, and blood capillary rarefaction at 32 wk. In conclusion, ACEi considerably decreased and/or delayed both glomerulosclerosis and tubulointerstitial injury. Prevention of glomerular podoplanin loss and proteinuria could be attributed to the known intraglomerular pressure-lowering effects of ACEi. Reduction of lymphangiogenesis could contribute to amelioration of tubulointerstitial fibrosis and inflammatory infiltration after ACEi.
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Affiliation(s)
- Péter Hamar
- Institute of Pathophysiology, Semmelweis University, Budapest, Hungary; and
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45
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叶 显, 黄 伟, 郑 彦, 梁 莺, 龚 望, 杨 翀, 刘 斌. [Irbesartan ameliorates cardiac inflammation in type 2 diabetic db/db mice]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2016; 37:505-511. [PMID: 28446404 PMCID: PMC6744100 DOI: 10.3969/j.issn.1673-4254.2017.04.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the protective effects of irbesartan against cardiac inflammation associated with diabetes and obesity in the db/db mouse model of type 2 diabetes and explore the underlying mechanisms. METHODS Twenty- four 10-week-old diabetic db/db mice were equally randomized into irbesartan treatment (50 mg/kg per day) group and model group, using 12 nondiabetic littermates (db/+) as the controls, The mice were treated with irbesartan or saline vehicle for 16 consecutive weeks, after which the heart pathology was observed and the heart weight, body weight, and serum levels of fasting blood glucose (FBG), total cholesterol(TC), and triglycerides(TG) were measured. The expression of nuclear factor-kappaB (NF-κB) p65 in the myocardium was assessed with immunohistochemistry, the protein levels of P-IκBα ,IκBα and β-actin were analyzed with Western blotting, and the pro-inflammatory cytokines IL-6 and TNF-α mRNA were detected using quantitative real-time PCR (qPCR). RESULTS Compared with db/+ mice, the saline-treated db/db mice developed obesity, hyperglycemia and hyperlipidemia (P<0.01). Histopathological examination of the heart tissue revealed inflammatory cell infiltration, increased myocardial interstitium and disorders of myocardial fiber arrangement. The diabetic mice showed increased P-IαBα and decreased IκBα protein levels, enhanced activity and expression of NF-κB in the hearts, and increased mRNA expression of IL-6 and TNF-α in the myocardium. These abnormalities were all associated with increased inflammatory response. Treatment with irbesartan improved the heart architecture and attenuated high glucose-induced inflammation in the diabetic mice. CONCLUSION Treatment with irbesartan attenuates cardiac inflammation in type 2 diabetic db/db mice, and this effect was probably associated with the suppression of cardiac angiotensin II and NF-κB signaling pathway.
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Affiliation(s)
- 显朗 叶
- 南方医科大学珠江医院急诊科,广东 广州 510280Department of Emergency Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - 伟昌 黄
- 南方医科大学珠江医院急诊科,广东 广州 510280Department of Emergency Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - 彦涛 郑
- 南方医科大学珠江医院急诊科,广东 广州 510280Department of Emergency Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - 莺 梁
- 南方医科大学珠江医院心血管内科,广东 广州 510280Department of Cardiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - 望球 龚
- 南方医科大学珠江医院肾内科,广东 广州 510280Department of Nephrology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - 翀邈 杨
- 南方医科大学珠江医院急诊科,广东 广州 510280Department of Emergency Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - 斌 刘
- 南方医科大学珠江医院急诊科,广东 广州 510280Department of Emergency Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
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46
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Bai T, Wang F, Mellen N, Zheng Y, Cai L. Diabetic cardiomyopathy: role of the E3 ubiquitin ligase. Am J Physiol Endocrinol Metab 2016; 310:E473-83. [PMID: 26732687 DOI: 10.1152/ajpendo.00467.2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 12/29/2015] [Indexed: 12/21/2022]
Abstract
Diabetic cardiomyopathy (DCM) is the leading cause of mortality in diabetes. As the number of cases of diabetes continues to rise, it is urgent to develop new strategies to protect against DCM, which is characterized by cardiac hypertrophy, increased apoptosis, fibrosis, and altered insulin metabolism. The E3 ubiquitin ligases (E3s), one component of the ubiquitin-proteasome system, play vital roles in all of the features of DCM listed above. They also modulate the activity of several transcription factors involved in the pathogenesis of DCM. In addition, the E3s degrade both insulin receptor and insulin receptor substrates and also regulate insulin gene transcription, leading to insulin resistance and insulin deficiency. Therefore, the E3s may be a driving force for DCM. This review summarizes currently available studies to analyze the roles of the E3s in DCM, enriches our knowledge of how DCM develops, and provides a novel strategy to protect heart from diabetes.
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Affiliation(s)
- Tao Bai
- Cardiovascular Center, First Hospital of Jilin University, Changchun, China; Kosair Children's Hospital Research Institute, Departments of Pediatrics and Radiation Oncology, University of Louisville, Louisville, Kentucky
| | - Fan Wang
- Internal Medicine, People's Hospital of Jilin Province, Changchun, China; and
| | - Nicholas Mellen
- Kosair Children's Hospital Research Institute, Departments of Pediatrics and Radiation Oncology, University of Louisville, Louisville, Kentucky
| | - Yang Zheng
- Cardiovascular Center, First Hospital of Jilin University, Changchun, China;
| | - Lu Cai
- Kosair Children's Hospital Research Institute, Departments of Pediatrics and Radiation Oncology, University of Louisville, Louisville, Kentucky
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47
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Bai D, Zhang Y, Shen M, Sun Y, Xia Q, Zhang Y, Liu X, Wang H, Yuan L. Hyperglycemia and hyperlipidemia blunts the Insulin-Inpp5f negative feedback loop in the diabetic heart. Sci Rep 2016; 6:22068. [PMID: 26908121 PMCID: PMC4764951 DOI: 10.1038/srep22068] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 02/05/2016] [Indexed: 01/30/2023] Open
Abstract
The leading cause of death in diabetic patients is diabetic cardiomyopathy, in which alteration of Akt signal plays an important role. Inpp5f is recently found to be a negative regulator of Akt signaling, while its expression and function in diabetic heart is largely unknown. In this study, we found that in both the streptozotocin (STZ) and high fat diet (HFD) induced diabetic mouse models, Inpp5f expression was coordinately regulated by insulin, blood glucose and lipid levels. Increased Inpp5f was inversely correlated with the cardiac function. Further studies revealed that Insulin transcriptionally activated Inpp5f in an Sp1 dependent manner, and increased Inpp5f in turn reduced the phosphorylation of Akt, forming a negative feedback loop. The negative feedback plays a protective role under diabetic condition. However, high blood glucose and lipid, which are characteristics of uncontrolled diabetes and type 2 diabetes, increased Inpp5f expression through activation of NF-κB, blunts the protective feedback. Thus, our study has revealed that Inpp5f provides as a negative feedback regulator of insulin signaling and downregulation of Inpp5f in diabetes is cardioprotective. Increased Inpp5f by hyperglycemia and hyperlipidemia is an important mediator of diabetic cardiomyopathy and is a promising therapeutic target for the disease.
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Affiliation(s)
- Danna Bai
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an 710032, China.,323 Hospital of PLA, Xi'an 710054, China
| | - Yajun Zhang
- Department of Ultrasound Diagnostics, Tangdu Hospital, the Fourth Military Medical University, Xi'an 710038, China
| | - Mingzhi Shen
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an 710032, China.,Department of Cardiology, Hainan Branch of PLA General Hospital, Sanya 572013, China
| | | | - Qing Xia
- 323 Hospital of PLA, Xi'an 710054, China
| | - Yingmei Zhang
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an 710032, China
| | - Xuedong Liu
- Department of Neurology, Xijing Hospital, the Fourth Military Medical University, Xi'an 710032, China
| | - Haichang Wang
- Department of Cardiology, Xijing Hospital, the Fourth Military Medical University, Xi'an 710032, China
| | - Lijun Yuan
- Department of Ultrasound Diagnostics, Tangdu Hospital, the Fourth Military Medical University, Xi'an 710038, China
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48
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Gu YY, Wang H, Wang S, Gao H, Qiu MC. Effects of Cordyceps sinensis on the Expressions of NF-κB and TGF-β1 in Myocardium of Diabetic Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2015; 2015:369631. [PMID: 26697096 PMCID: PMC4677184 DOI: 10.1155/2015/369631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 07/26/2015] [Accepted: 08/02/2015] [Indexed: 11/17/2022]
Abstract
Objective. To investigate the effect of Cordyceps sinensis (CS) on the expressions of NF-κB and TGF-β1 in myocardium of streptozotocin-induced diabetic rats. Methods. A total of 53 healthy male SD rats, mice age of 8 weeks and weight of 220 ± 20 g, were randomly divided into five groups by randomized block design: normal control group (n = 10), diabetic group (n = 10), low dose of CS group (n = 12; CS 0.6 g·kg(-1)·d(-1)), middle dose of CS group (n = 11; CS 2.5 g·kg(-1)·d(-1)), and high dose of CS group (n = 10; CS 5 g·kg(-1)·d(-1)). The diabetic models with tail intravenous injection by streptozotocin (45 mg·kg(-1)). Diabetic rats were sacrificed after 8 weeks; the expressions of NF-κB and TGF-β1 proteins and mRNA in the cardiac muscle were determined by using immunohistochemistry staining and reverse transcription polymerase chain reaction (RT-PCR) method. The data were analyzed using one factor analysis of variance. Result. The expressions of NF-κB and TGF-β1 proteins and mRNA in the cardiac muscle of diabetic rats were significantly raised (P < 0.05), which could be decreased by CS (P < 0.05). Conclusions. The changes on the expressions of NF-κB and TGF-β1 in myocardium may be involved in the occurrence of diabetic cardiomyopathy (DC). CS may play its role on myocardial protection by regulating the expressions of NF-κB and TGF-β1 in myocardium.
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Affiliation(s)
- You-you Gu
- Department of Endocrinology, The Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - Huan Wang
- Community Health Service Center of Hu Jiayuan Street, Binhai New District, Tianjin 300454, China
- Graduate School of Tianjin Medical University, Tianjin 300070, China
| | - Su Wang
- Department of Endocrinology, The Fifth Central Hospital of Tianjin, Tianjin 300450, China
| | - Hua Gao
- Department of Endocrinology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - Ming-cai Qiu
- Department of Endocrinology, General Hospital of Tianjin Medical University, Tianjin 300052, China
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Cong W, Ruan D, Xuan Y, Niu C, Tao Y, Wang Y, Zhan K, Cai L, Jin L, Tan Y. Cardiac-specific overexpression of catalase prevents diabetes-induced pathological changes by inhibiting NF-κB signaling activation in the heart. J Mol Cell Cardiol 2015; 89:314-25. [PMID: 26456065 DOI: 10.1016/j.yjmcc.2015.10.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 09/14/2015] [Accepted: 10/07/2015] [Indexed: 12/12/2022]
Abstract
Catalase is an antioxidant enzyme that specifically catabolizes hydrogen peroxide (H2O2). Overexpression of catalase via a heart-specific promoter (CAT-TG) was reported to reduce diabetes-induced accumulation of reactive oxygen species (ROS) and further prevent diabetes-induced pathological abnormalities, including cardiac structural derangement and left ventricular abnormity in mice. However, the mechanism by which catalase overexpression protects heart function remains unclear. This study found that activation of a ROS-dependent NF-κB signaling pathway was downregulated in hearts of diabetic mice overexpressing catalase. In addition, catalase overexpression inhibited the significant increase in nitration levels of key enzymes involved in energy metabolism, including α-oxoglutarate dehydrogenase E1 component (α-KGD) and ATP synthase α and β subunits (ATP-α and ATP-β). To assess the effects of the NF-κB pathway activation on heart function, Bay11-7082, an inhibitor of the NF-κB signaling pathway, was injected into diabetic mice, protecting mice against the development of cardiac damage and increased nitrative modifications of key enzymes involved in energy metabolism. In conclusion, these findings demonstrated that catalase protects mouse hearts against diabetic cardiomyopathy, partially by suppressing NF-κB-dependent inflammatory responses and associated protein nitration.
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Affiliation(s)
- Weitao Cong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, PR China
| | - Dandan Ruan
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, PR China; The Health Examination Center, the 117th Hospital of Chinese People's Liberation Army, Hangzhou 310013, PR China
| | - Yuanhu Xuan
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, PR China
| | - Chao Niu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, PR China
| | - Youli Tao
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, PR China
| | - Yang Wang
- Department of Histology and Embryology, Institute of Neuroscience, Wenzhou Medical University, Wenzhou 325000, PR China
| | - Kungao Zhan
- The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, PR China
| | - Lu Cai
- The First Hospital of Jilin University, Changchun 130021, PR China
| | - Litai Jin
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, PR China.
| | - Yi Tan
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, PR China.
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50
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Wende AR. Post-translational modifications of the cardiac proteome in diabetes and heart failure. Proteomics Clin Appl 2015; 10:25-38. [PMID: 26140508 PMCID: PMC4698356 DOI: 10.1002/prca.201500052] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/03/2015] [Accepted: 06/29/2015] [Indexed: 12/19/2022]
Abstract
Cardiovascular complications are the leading cause of death in diabetic patients. Decades of research has focused on altered gene expression, altered cellular signaling, and altered metabolism. This work has led to better understanding of disease progression and treatments aimed at reversing or stopping this deadly process. However, one of the pieces needed to complete the puzzle and bridge the gap between altered gene expression and changes in signaling/metabolism is the proteome and its host of modifications. Defining the mechanisms of regulation includes examining protein levels, localization, and activity of the functional component of cellular machinery. Excess or misutilization of nutrients in obesity and diabetes may lead to PTMs contributing to cardiovascular disease progression. PTMs link regulation of metabolic changes in the healthy and diseased heart with regulation of gene expression itself (e.g. epigenetics), protein enzymatic activity (e.g. mitochondrial oxidative capacity), and function (e.g. contractile machinery). Although a number of PTMs are involved in each of these pathways, we will highlight the role of the serine and threonine O‐linked addition of β‐N‐acetyl‐glucosamine or O‐GlcNAcylation. This nexus of nutrient supply, utilization, and storage allows for the modification and translation of mitochondrial function to many other aspects of the cell.
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Affiliation(s)
- Adam R Wende
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
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