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Dark N, Cosson MV, Tsansizi LI, Owen TJ, Ferraro E, Francis AJ, Tsai S, Bouissou C, Weston A, Collinson L, Abi-Gerges N, Miller PE, MacLeod KT, Ehler E, Mitter R, Harding SE, Smith JC, Bernardo AS. Generation of left ventricle-like cardiomyocytes with improved structural, functional, and metabolic maturity from human pluripotent stem cells. CELL REPORTS METHODS 2023; 3:100456. [PMID: 37159667 PMCID: PMC10163040 DOI: 10.1016/j.crmeth.2023.100456] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 01/23/2023] [Accepted: 03/25/2023] [Indexed: 05/11/2023]
Abstract
Decreased left ventricle (LV) function caused by genetic mutations or injury often leads to debilitating and fatal cardiovascular disease. LV cardiomyocytes are, therefore, a potentially valuable therapeutical target. Human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs) are neither homogeneous nor functionally mature, which reduces their utility. Here, we exploit cardiac development knowledge to instruct differentiation of hPSCs specifically toward LV cardiomyocytes. Correct mesoderm patterning and retinoic acid pathway blocking are essential to generate near-homogenous LV-specific hPSC-CMs (hPSC-LV-CMs). These cells transit via first heart field progenitors and display typical ventricular action potentials. Importantly, hPSC-LV-CMs exhibit increased metabolism, reduced proliferation, and improved cytoarchitecture and functional maturity compared with age-matched cardiomyocytes generated using the standard WNT-ON/WNT-OFF protocol. Similarly, engineered heart tissues made from hPSC-LV-CMs are better organized, produce higher force, and beat more slowly but can be paced to physiological levels. Together, we show that functionally matured hPSC-LV-CMs can be obtained rapidly without exposure to current maturation regimes.
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Affiliation(s)
| | | | - Lorenza I. Tsansizi
- The Francis Crick Institute, London, UK
- NHLI, Imperial College London, London, UK
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Andreia S. Bernardo
- The Francis Crick Institute, London, UK
- NHLI, Imperial College London, London, UK
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2
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Gunata M, Parlakpinar H. Experimental heart failure models in small animals. Heart Fail Rev 2023; 28:533-554. [PMID: 36504404 DOI: 10.1007/s10741-022-10286-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/08/2022] [Indexed: 12/14/2022]
Abstract
Heart failure (HF) is one of the most critical health and economic burdens worldwide, and its prevalence is continuously increasing. HF is a disease that occurs due to a pathological change arising from the function or structure of the heart tissue and usually progresses. Numerous experimental HF models have been created to elucidate the pathophysiological mechanisms that cause HF. An understanding of the pathophysiology of HF is essential for the development of novel efficient therapies. During the past few decades, animal models have provided new insights into the complex pathogenesis of HF. Success in the pathophysiology and treatment of HF has been achieved by using animal models of HF. The development of new in vivo models is critical for evaluating treatments such as gene therapy, mechanical devices, and new surgical approaches. However, each animal model has advantages and limitations, and none of these models is suitable for studying all aspects of HF. Therefore, the researchers have to choose an appropriate experimental model that will fully reflect HF. Despite some limitations, these animal models provided a significant advance in the etiology and pathogenesis of HF. Also, experimental HF models have led to the development of new treatments. In this review, we discussed widely used experimental HF models that continue to provide critical information for HF patients and facilitate the development of new treatment strategies.
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Affiliation(s)
- Mehmet Gunata
- Department of Medical Pharmacology, Faculty of Medicine, Inonu University, Malatya, 44280, Türkiye
| | - Hakan Parlakpinar
- Department of Medical Pharmacology, Faculty of Medicine, Inonu University, Malatya, 44280, Türkiye.
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3
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Welcome MO, Dogo D, Nikos E Mastorakis. Cellular mechanisms and molecular pathways linking bitter taste receptor signalling to cardiac inflammation, oxidative stress, arrhythmia and contractile dysfunction in heart diseases. Inflammopharmacology 2023; 31:89-117. [PMID: 36471190 PMCID: PMC9734786 DOI: 10.1007/s10787-022-01086-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/11/2022] [Indexed: 12/12/2022]
Abstract
Heart diseases and related complications constitute a leading cause of death and socioeconomic threat worldwide. Despite intense efforts and research on the pathogenetic mechanisms of these diseases, the underlying cellular and molecular mechanisms are yet to be completely understood. Several lines of evidence indicate a critical role of inflammatory and oxidative stress responses in the development and progression of heart diseases. Nevertheless, the molecular machinery that drives cardiac inflammation and oxidative stress is not completely known. Recent data suggest an important role of cardiac bitter taste receptors (TAS2Rs) in the pathogenetic mechanism of heart diseases. Independent groups of researchers have demonstrated a central role of TAS2Rs in mediating inflammatory, oxidative stress responses, autophagy, impulse generation/propagation and contractile activities in the heart, suggesting that dysfunctional TAS2R signalling may predispose to cardiac inflammatory and oxidative stress disorders, characterised by contractile dysfunction and arrhythmia. Moreover, cardiac TAS2Rs act as gateway surveillance units that monitor and detect toxigenic or pathogenic molecules, including microbial components, and initiate responses that ultimately culminate in protection of the host against the aggression. Unfortunately, however, the molecular mechanisms that link TAS2R sensing of the cardiac milieu to inflammatory and oxidative stress responses are not clearly known. Therefore, we sought to review the possible role of TAS2R signalling in the pathophysiology of cardiac inflammation, oxidative stress, arrhythmia and contractile dysfunction in heart diseases. Potential therapeutic significance of targeting TAS2R or its downstream signalling molecules in cardiac inflammation, oxidative stress, arrhythmia and contractile dysfunction is also discussed.
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Affiliation(s)
- Menizibeya O Welcome
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Nile University of Nigeria, Plot 681 Cadastral Zone, C-00 Research and Institution Area, Jabi Airport Road Bypass, FCT, Abuja, Nigeria.
| | - Dilli Dogo
- Department of Surgery, Faculty of Clinical Sciences, College of Health Sciences, Nile University of Nigeria, Abuja, Nigeria
| | - Nikos E Mastorakis
- Technical University of Sofia, Klement Ohridksi 8, Sofia, 1000, Bulgaria
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Homocysteine as a Predictor of Paroxysmal Atrial Fibrillation-Related Events: A Scoping Review of the Literature. Diagnostics (Basel) 2022; 12:diagnostics12092192. [PMID: 36140593 PMCID: PMC9498051 DOI: 10.3390/diagnostics12092192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/23/2022] [Accepted: 08/31/2022] [Indexed: 12/06/2022] Open
Abstract
High levels of homocysteine (Hcy) have been linked with adverse cardiovascular outcomes, such as arrhythmias and stroke. In the context of paroxysmal atrial fibrillation (PAF), hyperhomocysteinemia has been demonstrated to be an independent predictor of future events. The aim of this report was to address the potential value of Hcy levels in predicting future paroxysms of atrial fibrillation (AF), as well as to identify the potential mechanisms of action. We searched PubMed and the Cochrane Database on 16 January 2022. Keywords used were homocysteine or hyperhomocysteinemia paired with a total of 67 different keywords or phrases that have been implicated with the pathogenesis of AF. We included primary reports of clinical and non-clinical data in the English language, as well as systematic reviews with or without meta-analyses. We placed no time constraints on our search strategy, which yielded 3748 results. Following title review, 3293 reports were excluded and 455 reports were used for title and abstract review, after which 109 reports were finally used for full-text review. Our review indicates that Hcy levels seem to hold a predictive value in PAF. Herein, potential mechanisms of action are presented and special considerations are made for clinically relevant diagnostic procedures that could complement plasma levels in the prediction of future PAF events. Finally, gaps of evidence are identified and considerations for future clinical trial design are presented.
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5
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Kaya SG, Inanc-Surer S, Cakan-Akdogan G, Oktay G, Utine CA, Kalyoncu S. Roles of matrix metalloproteinases in the cornea: A special focus on macular corneal dystrophy. MEDICINE IN DRUG DISCOVERY 2021. [DOI: 10.1016/j.medidd.2021.100095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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6
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Myocardial transcription of inflammatory and remodeling markers in cats with hypertrophic cardiomyopathy and systemic diseases associated with an inflammatory phenotype. Res Vet Sci 2021; 136:484-494. [PMID: 33848803 DOI: 10.1016/j.rvsc.2021.03.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 12/17/2022]
Abstract
Feline hypertrophic cardiomyopathy (HCM) is characterized by macrophage-driven myocardial remodeling processes in a pro-inflammatory environment. To further investigate the mechanisms behind these processes, the myocardial transcription of cytokines and remodeling enzymes was comparatively assessed in cats with HCM and cats without cardiac diseases. Sixty-seven cats were included, 17 cats with HCM (including 5 with atrial thrombus; AT), and 50 cats without cardiac diseases. The latter comprised 10 control cats (no cardiac or relevant systemic disease), 34 cats with diseases suspected to be associated with a systemic inflammatory state of which 18 suffered from feline infectious peritonitis (FIP), and 6 cats with multicentric lymphoma. Samples from atria, ventricular free walls and interventricular septum were examined using quantitative reverse transcriptase PCR. The overall highest myocardial marker transcriptions were observed in cats with multicentric lymphoma, FIP and HCM, followed by diseases likely associated with a systemic inflammatory state, and control cats. Inflammatory marker transcription predominated in the myocardium of cats with systemic inflammatory diseases, whereas in HCM the transcription of remodeling enzymes prevailed. Sex significantly influenced the myocardial transcription of several remodeling enzymes. These results suggest a versatile myocardial response depending on the disease and illustrates the relevance of sex for the cardiac response to cardiac and systemic disease in cats. A systemic inflammatory state appears to elicit an inflammatory phenotype in the myocardium, whereas in HCM, the myocardium mediates its own remodeling. In HCM, the identified markers might be involved in the ongoing remodeling processes causing structural and functional changes.
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Freitas IAD, Lima NDA, Silva GBD, Castro RLD, Patel P, Lima CCDV, Lino DODC. Novel biomarkers in the prognosis of patients with atherosclerotic coronary artery disease. Rev Port Cardiol 2020; 39:667-672. [PMID: 33239161 DOI: 10.1016/j.repc.2020.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 03/20/2020] [Accepted: 05/05/2020] [Indexed: 10/23/2022] Open
Abstract
Biomarkers have a variety of clinical applications in multiple stages of diagnosis and therapy. Troponin T and brain natriuretic peptide are the best-known in the cardiovascular field, but experimental studies have identified new biomarkers with potential clinical value. In this article, novel biomarkers of kidney injury are investigated in the context of their relationship with atherosclerotic coronary disease. This review was carried out through a search in the PubMed database using as keywords each biomarker to be studied with the descriptor (DECS/MeSH) "Myocardial Infarction", and the keywords "coronary" and "cardiovascular", using the Boolean operator "AND". After the selection, 24 articles published between 2003 and 2017 were identified for the review. Eight biomarkers were investigated: neutrophil gelatinase-associated lipocalin (NGAL), fibroblast growth factor 23 (FGF23), tissue inhibitor of metalloproteinase-2 (TIMP-2), syndecan-1, interleukin-6 (IL-6), galectin-3, and the vascular cell adhesion molecules ICAM-1 and VCAM-1. Most identified articles were experimental studies, studies on human subjects having few participants. There are several promising biomarkers in the setting of coronary disease. The main evidence available in the literature suggests that elevated NGAL levels are associated with better prognosis after cardiac arrest and with comorbid kidney injury; elevated FGF23 is associated with coronary artery disease severity; TIMP-2 protects against coronary artery disease; increased expression of syndecan-1 is observed in myocardial infarction (MI) and protects against an exacerbated inflammatory response; IL-6 is associated with atherosclerotic disease and major cardiovascular outcomes; galectin-3 correlates with adverse clinical events post-MI; and elevated ICAM-1/VCAM-1 levels are associated with risk of coronary disease. Further studies are required to better investigate the role of each of these biomarkers in both stable coronary disease and acute coronary syndrome.
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Affiliation(s)
- Ingrid Alves de Freitas
- Department of Cardiology, Hospital de Messejana Dr. Carlos Alberto Studart Gomes, Cardiology, Fortaleza, Brazil
| | - Neiberg de Alcantara Lima
- Department of Cardiology, Hospital de Messejana Dr. Carlos Alberto Studart Gomes, Cardiology, Fortaleza, Brazil; Department of Internal Medicine, Western Michigan University, Internal Medicine, Kalamazoo, MI, USA.
| | | | - Ricardo Lessa de Castro
- Department of Cardiology, Hospital de Messejana Dr. Carlos Alberto Studart Gomes, Cardiology, Fortaleza, Brazil; Department of Internal Medicine, Western Michigan University, Internal Medicine, Kalamazoo, MI, USA
| | - Prashant Patel
- Department of Internal Medicine, Western Michigan University, Internal Medicine, Kalamazoo, MI, USA
| | | | - Danielli Oliveira da Costa Lino
- Department of Cardiology, Hospital de Messejana Dr. Carlos Alberto Studart Gomes, Cardiology, Fortaleza, Brazil; Department of Public Health, Universidade de Fortaleza, Fortaleza, Brazil
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Freitas IAD, Lima NDA, Silva Jr GBD, Castro Jr RLD, Patel P, Lima CCDV, Lino DODC. Novel biomarkers in the prognosis of patients with atherosclerotic coronary artery disease. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2020. [DOI: 10.1016/j.repce.2020.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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9
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Alimadadi A, Manandhar I, Aryal S, Munroe PB, Joe B, Cheng X. Machine learning-based classification and diagnosis of clinical cardiomyopathies. Physiol Genomics 2020; 52:391-400. [PMID: 32744882 DOI: 10.1152/physiolgenomics.00063.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Dilated cardiomyopathy (DCM) and ischemic cardiomyopathy (ICM) are two common types of cardiomyopathies leading to heart failure. Accurate diagnostic classification of different types of cardiomyopathies is critical for precision medicine in clinical practice. In this study, we hypothesized that machine learning (ML) can be used as a novel diagnostic approach to analyze cardiac transcriptomic data for classifying clinical cardiomyopathies. RNA-Seq data of human left ventricle tissues were collected from 41 DCM patients, 47 ICM patients, and 49 nonfailure controls (NF) and tested using five ML algorithms: support vector machine with radial kernel (svmRadial), neural networks with principal component analysis (pcaNNet), decision tree (DT), elastic net (ENet), and random forest (RF). Initial ML classifications achieved ~93% accuracy (svmRadial) for NF vs. DCM, ~82% accuracy (RF) for NF vs. ICM, and ~80% accuracy (ENet and svmRadial) for DCM vs. ICM. Next, 50 highly contributing genes (HCGs) for classifying NF and DCM, 68 HCGs for classifying NF and ICM, and 59 HCGs for classifying DCM and ICM were selected for retraining ML models. Impressively, the retrained models achieved ~90% accuracy (RF) for NF vs. DCM, ~90% accuracy (pcaNNet) for NF vs. ICM, and ~85% accuracy (pcaNNet and RF) for DCM vs. ICM. Pathway analyses further confirmed the involvement of those selected HCGs in cardiac dysfunctions such as cardiomyopathies, cardiac hypertrophies, and fibrosis. Overall, our study demonstrates the promising potential of using artificial intelligence via ML modeling as a novel approach to achieve a greater level of precision in diagnosing different types of cardiomyopathies.
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Affiliation(s)
- Ahmad Alimadadi
- Bioinformatics & Artificial Intelligence Laboratory, Center for Hypertension and Precision Medicine, Program in Physiological Genomics, Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio.,Bioinformatics Program, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Ishan Manandhar
- Bioinformatics & Artificial Intelligence Laboratory, Center for Hypertension and Precision Medicine, Program in Physiological Genomics, Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio.,Bioinformatics Program, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Sachin Aryal
- Bioinformatics & Artificial Intelligence Laboratory, Center for Hypertension and Precision Medicine, Program in Physiological Genomics, Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio.,Bioinformatics Program, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Patricia B Munroe
- Clinical Pharmacology, William Harvey Research Institute & National Institute of Health Research Barts Cardiovascular Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Bina Joe
- Bioinformatics & Artificial Intelligence Laboratory, Center for Hypertension and Precision Medicine, Program in Physiological Genomics, Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio.,Bioinformatics Program, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Xi Cheng
- Bioinformatics & Artificial Intelligence Laboratory, Center for Hypertension and Precision Medicine, Program in Physiological Genomics, Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
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The Role of Connexin-43 in the Inflammatory Process: A New Potential Therapy to Influence Keratitis. J Ophthalmol 2019; 2019:9312827. [PMID: 30805212 PMCID: PMC6360563 DOI: 10.1155/2019/9312827] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 11/12/2018] [Accepted: 11/19/2018] [Indexed: 12/22/2022] Open
Abstract
The studies outlined in this review highlight the relationship between inflammatory signaling molecules and connexin-43 (Cx43). Gap junction (GJ) channels and hemichannels (HCs) participate in the metabolic activity between intra- and extracellular space. Some ions and small molecules are exchanged from cell to cell or cell to extracellular space to affect the process of inflammation via GJ. We analyzed the effects of signaling molecules, such as innate immunity messengers, transcription factors, LPS, cytokine, inflammatory chemokines, and MMPs, on Cx43 expression during the inflammatory process. At the same time, we found that these signaling molecules play a critical role in the pathogenesis of keratitis. Thus, we assessed the function of Cx43 during inflammatory corneal disease. Corneal healing plays an essential role in the late stage of keratitis. We found that Cx43 is involved in wound healing. Studies have shown that the decrease of Cx43 can decrease the time of healing. We also report several Cx43 mimic peptides which can inhibit the activity of Cx43 Hc to mediate the releasing of adenosine triphosphate (ATP), which may in turn influence the inflammatory process.
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Hardy E, Hardy-Sosa A, Fernandez-Patron C. MMP-2: is too low as bad as too high in the cardiovascular system? Am J Physiol Heart Circ Physiol 2018; 315:H1332-H1340. [DOI: 10.1152/ajpheart.00198.2018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Matrix metalloproteinase (MMP)-2 cleaves a broad spectrum of substrates, including extracellular matrix components (responsible for normal tissue remodeling) and cytokines (modulators of the inflammatory response to physiological insults such as tissue damage). MMP-2 expression is elevated in many cardiovascular pathologies (e.g., myocardial infarction, hypertensive heart disease) where tissue remodeling and inflammatory responses are perturbed. Thus, it has generally been assumed that blockade of MMP-2 activity will yield therapeutic effects. Here, we provide a counterargument to this dogma based on 1) preclinical studies on Mmp2-null ( Mmp2−/−) mice and 2) clinical studies on patients with inactivating MMP2 gene mutations. Furthermore, we put forward the hypothesis that, when MMP-2 activity falls below baseline, the bioavailability of proinflammatory cytokines normally cleaved and inactivated by MMP-2 increases, leading to the production of cytokines and cardiac secretion of phospholipase A2activity into the circulation, which stimulate systemic inflammation that perturbs lipid metabolism in target organs. Finally, we suggest that insufficient understanding of the consequences of MMP-2 deficiency remains a major factor in the failure of MMP-2 inhibitor-based therapeutic approaches. This paucity of knowledge precludes our ability to effectively intervene in cardiovascular and noncardiovascular pathologies at the level of MMP-2.
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Affiliation(s)
- Eugenio Hardy
- Biotechnology Laboratory, Study Center for Research and Biological Evaluations, Institute of Pharmacy and Foods, University of Havana, Havana, Cuba
| | | | - Carlos Fernandez-Patron
- Department of Biochemistry, Cardiovascular Research Centre, Mazankowski Alberta Heart Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
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Okada M, Imoto K, Sugiyama A, Yasuda J, Yamawaki H. New Insights into the Role of Basement Membrane-Derived Matricryptins in the Heart. Biol Pharm Bull 2018; 40:2050-2060. [PMID: 29199230 DOI: 10.1248/bpb.b17-00308] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The extracellular matrix (ECM), which contributes to structural homeostasis as well as to the regulation of cellular function, is enzymatically cleaved by proteases, such as matrix metalloproteinases and cathepsins, in the normal and diseased heart. During the past two decades, matricryptins have been defined as fragments of ECM with a biologically active cryptic site, namely the 'matricryptic site,' and their biological activities have been initially identified and clarified, including anti-angiogenic and anti-tumor effects. Thus, matricryptins are expected to be novel anti-tumor drugs, and thus widely investigated. Although there are a smaller number of studies on the expression and function of matricryptins in fields other than cancer research, some matricryptins have been recently clarified to have biological functions beyond an anti-angiogenic effect in heart. This review particularly focuses on the expression and function of basement membrane-derived matricryptins, including arresten, canstatin, tumstatin, endostatin and endorepellin, during cardiac diseases leading to heart failure such as cardiac hypertrophy and myocardial infarction.
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Affiliation(s)
- Muneyoshi Okada
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Keisuke Imoto
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Akira Sugiyama
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Jumpei Yasuda
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Hideyuki Yamawaki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
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Hacker TA. Animal Models and Cardiac Extracellular Matrix Research. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1098:45-58. [DOI: 10.1007/978-3-319-97421-7_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Liu Y, Li S, Zhang Z, Lv Z, Jiang H, Tan X, Liu F. Effects of valproic acid on sympathetic activity and left ventricularmyocardial remodelling in rats during pressure overload. Turk J Med Sci 2017; 47:1651-1660. [PMID: 29152949 DOI: 10.3906/sag-1704-142] [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] [Indexed: 11/03/2022] Open
Abstract
Background/aim: Pressure overload induces cardiac remodelling and results in heart failure. Enhanced sympathetic outflow participates in the development of cardiac remodelling for the duration of pressure overload as an independent factor. Valproic acid has recently been shown to reduce neuronal injury and have antiinflammatory and antiapoptotic effects as a histone deacetylase inhibitor. We speculate that the drug plays a specific role in alleviating cardiac remodelling by inhibiting sympathetic activity. Materials and methods: Surgery of partial abdominal aortic constriction was performed on male Sprague-Dawley rats. After 4 weeks, animal models of pressure overload were validated and then valproic acid (300 mg/kg) was administrated to rats once a day for the next 4 weeks. Experimental parameters were detected 4 weeks after validation. Results: The administration of valproic acid alleviated cardiomyocyte hypertrophy, myocardial interstitial fibrosis and left ventricular diastolic dysfunction caused by partial abdominal aortic constriction. Valproic acid reduced the levels of plasma and local norepinephrine, augmented concentrations of hypothalamic gamma-aminobutyric acid, and had no side effects on the hepatic and renal function of the animals. Conclusion: These results suggest that valproic acid may be a safe and effective therapeutic strategy for the inhibition of sympathetic outflow and cardiac remodelling.
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15
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Singh M, Tyagi SC. Metalloproteinases as mediators of inflammation and the eyes: molecular genetic underpinnings governing ocular pathophysiology. Int J Ophthalmol 2017; 10:1308-1318. [PMID: 28861360 DOI: 10.18240/ijo.2017.08.20] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/01/2017] [Indexed: 12/18/2022] Open
Abstract
There are many vision threatening diseases of the eye affecting millions of people worldwide. In this article, we are summarizing potential role of various matrix metalloproteinases (MMPs); the Zn (2+)-dependent endoproteases in eye health along with pathogenesis of prominent ocular diseases such as macular degeneration, diabetic retinopathy, and glaucoma via understanding MMPs regulation in affected patients, interactions of MMPs with their substrate molecules, and key regulatory functions of tissue inhibitor of metalloproteinases (TIMPs) towards maintaining overall homeostasis.
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Affiliation(s)
- Mahavir Singh
- Eye and Vision Science Laboratory, Department of Physiology, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Suresh C Tyagi
- Eye and Vision Science Laboratory, Department of Physiology, University of Louisville School of Medicine, Louisville, KY 40202, USA
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Kanbay M, Afsar B, Siriopol D, Unal HU, Karaman M, Saglam M, Gezer M, Taş A, Eyileten T, Guler AK, Aydin İ, Oguz Y, Tarim K, Covic A, Yilmaz MI. Endostatin in chronic kidney disease: Associations with inflammation, vascular abnormalities, cardiovascular events and survival. Eur J Intern Med 2016; 33:81-7. [PMID: 27394925 DOI: 10.1016/j.ejim.2016.06.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 06/26/2016] [Accepted: 06/27/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Endostatin, generated from collagen XVIII, and endorepellin, possess dual activity as modifiers of both angiogenesis and endothelial cell autophagy. Plasma endostatin levels are elevated in a large number of diseases, and may reflect endothelial cell dysfunction. Few data on endostatins are available for patients with chronic kidney disease (CKD). We tested whether serum endostatin values are predictive for all-cause mortality and cardiovascular events (CVEs) in a CKD population. MATERIALS AND METHOD A total of 519 CKD pre-dialysis patients were included. Baseline plasma endostatin levels were measured in all patients. All included patients were followed-up (time-to-event analysis) until occurrence of death, fatal or nonfatal CVEs. Fatal and nonfatal CVE including death, stroke, and myocardial infarction were recorded prospectively RESULTS The mean age of the patients was 52.2±12.3years. There were 241 (46.4%) males, 111 (21.4%) had diabetes, 229 (44.1%) were smokers and 103 (19.8%) had a previous CVE. After a median follow-up of 46months, 46 patients died and 172 had a new CVE. In the univariable Cox survival analysis, higher endostatin levels were associated with a higher risk for both outcomes. However, after adjusting for traditional (age, gender, smoking status, diabetes, systolic blood pressure, HDL and total cholesterol) and renal-specific (eGFR, proteinuria and hsCRP) risk factors, endostatin levels remained associated only with the CVE outcome (HR=1.88, 95% CI 1.37-2.41 for a 1 SD increase in log endostatin values). CONCLUSION Endostatin levels are independently associated with incident CVE in CKD patients, but show limited prediction abilities for all-cause mortality and CVE above traditional and renal-specific risk factors.
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Affiliation(s)
- Mehmet Kanbay
- Department of Medicine, Division of Nephrology, Koc University School of Medicine, Istanbul, Turkey.
| | - Baris Afsar
- Department of Medicine, Division of Nephrology, Konya Numune State Hospital, Konya, Turkey
| | - Dimitrie Siriopol
- Nephrology Clinic, Dialysis and Renal Transplant Center, 'C.I. PARHON' University Hospital, Romania; 'Grigore T. Popa' University of Medicine, Iasi, Romania
| | - Hilmi Umut Unal
- Department of Nephrology, Gülhane School of Medicine, Ankara, Turkey
| | - Murat Karaman
- Department of Nephrology, Gülhane School of Medicine, Ankara, Turkey
| | - Mutlu Saglam
- Department of Radiology, Gülhane School of Medicine, Ankara, Turkey
| | - Mustafa Gezer
- Department of Nephrology, Gülhane School of Medicine, Ankara, Turkey
| | - Ahmet Taş
- Department of Biochemistry, Gülhane School of Medicine, Ankara, Turkey
| | - Tayfun Eyileten
- Department of Nephrology, Gülhane School of Medicine, Ankara, Turkey
| | | | - İbrahim Aydin
- Department of Biochemistry, Gülhane School of Medicine, Ankara, Turkey
| | - Yusuf Oguz
- Department of Nephrology, Gülhane School of Medicine, Ankara, Turkey
| | - Kayhan Tarim
- Koc University School of Medicine, Ankara, Turkey
| | - Adrian Covic
- Nephrology Clinic, Dialysis and Renal Transplant Center, 'C.I. PARHON' University Hospital, Romania
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Abstract
Although cardiac resuscitation can revive the whole body, the mechanisms are unclear. To this end, we propose that reviving a dead/dysfunctional cardiomyocyte will shed light on resuscitation mechanisms and pave the way to treat cardiac myopathies. The degradation of the myocyte cytoskeleton by the proteasome system which involves calpains, ubiquitin, caspases and matrix metalloproteases is the main focus of this review. The activation of calpains beyond the calpastatin-mediated inhibition due to extensive calcium harbor can lead to titin degradation, damage to the sarcomere and contractile dysfunction. The ubiquitin proteasome system can disturb the protein homeostasis within the cell and generate a dysfunctional myocyte. The matrix metalloproteases disrupt the collagen/elastin ratio and connexins to generate arrhythmias. The concept of cardiac resuscitation stems from protecting the myocyte cytoskeleton and keeping the protein homeostasis intact through management of the degradation machinery. In this regard, proteasome inhibitors for the degradation machinery have an elegant space. Recently exosomes have been identified potentially, as carriers of microRNAs or proteins that can modify the target cells. Exosomes loaded with the inhibitor "cargo" which comprises microRNAs, siRNAs or proteins to inhibit the degradation machinery can be a method of choice for cardiac resuscitation-a process difficult to execute.
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Sabbatini AR, Barbaro NR, de Faria AP, Modolo R, Ritter AMV, Pinho C, Amorim RFB, Fontana V, Moreno H. Increased Circulating Tissue Inhibitor of Metalloproteinase-2 Is Associated With Resistant Hypertension. J Clin Hypertens (Greenwich) 2016; 18:969-975. [PMID: 27412873 DOI: 10.1111/jch.12865] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/08/2016] [Accepted: 04/10/2016] [Indexed: 11/29/2022]
Abstract
Resistant hypertension (RH) is associated with organ damage and cardiovascular risk. Evidence suggests the involvement of matrix metalloproteinase 2 (MMP-2) and tissue inhibitor of metalloproteinase 2 (TIMP-2) in hypertension and in cardiovascular remodeling. The aim of this study was to assess the levels of MMP-2 and TIMP-2 in RH and its relation with organ damage, including arterial stiffness and cardiac hypertrophy. MMP-2 and TIMP-2 levels were compared among 19 patients with normotension (NT), 116 with nonresistant hypertension (HTN) and 116 patients with resistant HTN (RH). MMP-2 levels showed no differences among NT, HTN, and RH groups, while TIMP-2 levels were higher in RH compared with HTN and NT groups (90.0 [76.1-107.3] vs 70.1 [57.7-88.3] vs 54.7 [40.9-58.1] ng/mL, P<.01), respectively. MMP-2/TIMP-2 ratio was reduced in the RH group compared with the HTN and NT groups (2.7 [1.9-3.4] vs 3.3 [2.6-4.2] vs 4.9 [4.5-5.3], P<.01), respectively. No associations were found between MMP-2 levels, TIMP-2, and MMP-2/TIMP-2 ratio with cardiac hypertrophy and arterial stiffness in the RH and HTN groups. Finally, in a regression analysis, reduced MMP-2/TIMP-2 ratio and increased TIMP-2 levels were independently associated with RH. The present findings provide evidence that TIMP-2 is associated with RH and might be a possible biomarker for screening RH patients.
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Affiliation(s)
- Andrea R Sabbatini
- Laboratory of Cardiovascular Pharmacology, Faculty of Medical Sciences and Teaching Hospital, University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil
| | - Natalia R Barbaro
- Laboratory of Cardiovascular Pharmacology, Faculty of Medical Sciences and Teaching Hospital, University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil
| | - Ana Paula de Faria
- Laboratory of Cardiovascular Pharmacology, Faculty of Medical Sciences and Teaching Hospital, University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil
| | - Rodrigo Modolo
- Laboratory of Cardiovascular Pharmacology, Faculty of Medical Sciences and Teaching Hospital, University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil
| | - Alessandra Mileni V Ritter
- Laboratory of Cardiovascular Pharmacology, Faculty of Medical Sciences and Teaching Hospital, University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil
| | - Claudio Pinho
- Faculty of Medicine, Pontifical Catholic University of Campinas (Puccamp), Campinas, Sao Paulo, Brazil
| | - Rivadavio Fernandes Batista Amorim
- Laboratory of Neuromodulation & Center for Clinical Research Learning, Department of Physical Medicine and Rehabilitation (PM&R), Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, MA
| | - Vanessa Fontana
- Laboratory of Cardiovascular Pharmacology, Faculty of Medical Sciences and Teaching Hospital, University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil
| | - Heitor Moreno
- Laboratory of Cardiovascular Pharmacology, Faculty of Medical Sciences and Teaching Hospital, University of Campinas (Unicamp), Campinas, Sao Paulo, Brazil. ,
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Amin M, Pushpakumar S, Muradashvili N, Kundu S, Tyagi SC, Sen U. Regulation and involvement of matrix metalloproteinases in vascular diseases. FRONT BIOSCI-LANDMRK 2016; 21:89-118. [PMID: 26709763 PMCID: PMC5462461 DOI: 10.2741/4378] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Matrix metalloproteinases (MMPs) are a family of zinc dependent endopeptidases whose main function is to degrade and deposit structural proteins within the extracellular matrix (ECM). A dysregulation of MMPs is linked to vascular diseases. MMPs are classified into collagenases, gelatinases, membrane-type, metalloelastase, stromelysins, matrilysins, enamelysins, and unclassified subgroups. The production of MMPs is stimulated by factors such as oxidative stress, growth factors and inflammation which lead to its up- or down-regulation with subsequent ECM remodeling. Normally, excess activation of MMPs is controlled by their endogenous inhibitors, tissue inhibitors of metalloproteinases (TIMPs). An imbalance of MMPs and TIMPs has been implicated in hypertension, atherosclerotic plaque formation and instability, aortic aneurysms and varicose vein wall remodeling. Also, recent evidence suggests epigenetic regulation of some MMPs in angiogenesis and atherosclerosis. Over the years, pharmacological inhibitors of MMPs have been used to modify or prevent the development of the disease with some success. In this review, we discuss recent advances in MMP biology, and their involvement in the manifestation of vascular disease.
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Affiliation(s)
- Matthew Amin
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Sathnur Pushpakumar
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Nino Muradashvili
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Sourav Kundu
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Suresh C Tyagi
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202
| | - Utpal Sen
- Department of Physiology and Biophysics, University of Louisville, School of Medicine, Louisville, KY-40202,
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Strilakou A, Perelas A, Lazaris A, Papavdi A, Karkalousos P, Giannopoulou I, Kriebardis A, Panayiotides I, Liapi C. Immunohistochemical determination of the extracellular matrix modulation in a rat model of choline-deprived myocardium: the effects of carnitine. Fundam Clin Pharmacol 2015; 30:47-57. [PMID: 26501493 DOI: 10.1111/fcp.12163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 09/06/2015] [Accepted: 10/20/2015] [Indexed: 12/18/2022]
Abstract
Choline has been identified as an essential nutrient with crucial role in many vital biological functions. Recent studies have demonstrated that heart dysfunction can develop in the setting of choline deprivation even in the absence of underlying heart disease. Matrix metalloproteinases (MMPs) are responsible for extracellular matrix degradation, and the dysregulation of MMP-2 and MMP-9 has been involved in the pathogenesis of various cardiovascular disorders. The aim of the study was to investigate the role of MMPs and their inhibitors (TIMPs), in the pathogenesis of choline deficiency-induced cardiomyopathy, and the way they are affected by carnitine supplementation. Male Wistar Albino adult rats were divided into four groups and received standard or choline-deficient diet with or without L-carnitine in drinking water (0.15% w/v) for 1 month. Heart tissue immunohistochemistry for MMP-2, MMP-9, TIMP-1, and TIMP-2 was performed. Choline deficiency was associated with suppressed immunohistochemical expression of MMP-2 and an increased expression of TIMP-2 compared to control, while it had no impact on TIMP-1. MMP-9 expression was decreased without, however, reaching statistical significance. Carnitine did not affect MMP-2, MMP-9, TIMP-1 or TIMP-2 expression. The pattern of TIMP and MMP modulation observed in a choline deficiency setting appears to promote fibrosis. Carnitine, although shown to suppress fibrosis, does not seem to affect MMP-2, MMP-9, TIMP-1 or TIMP-2 expression. Further studies will be required to identify the mechanism underlying the beneficial effects of carnitine.
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Affiliation(s)
- Athina Strilakou
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527, Athens, Greece
| | - Apostolos Perelas
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527, Athens, Greece
| | - Andreas Lazaris
- 1st Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527, Athens, Greece
| | - Asteria Papavdi
- 1st Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527, Athens, Greece
| | - Petros Karkalousos
- Department of Medical Laboratories, Technological Institute of Athens, Agiou Spyridonos and Dimitsanas Street, Egaleo, 12210, Athens, Greece
| | - Ioanna Giannopoulou
- 1st Department of Pathology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527, Athens, Greece
| | - Anastasios Kriebardis
- Department of Medical Laboratories, Technological Institute of Athens, Agiou Spyridonos and Dimitsanas Street, Egaleo, 12210, Athens, Greece
| | - Ioannis Panayiotides
- 2nd Department of Pathology, Medical School, National and Kapodistrian University of Athens, Attikon Hospital, 1Rimini Street, Chaidari, 12462, Athens, Greece
| | - Charis Liapi
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, Goudi, 11527, Athens, Greece
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Fonfara S, Hetzel U, Hahn S, Kipar A. Age- and gender-dependent myocardial transcription patterns of cytokines and extracellular matrix remodelling enzymes in cats with non-cardiac diseases. Exp Gerontol 2015; 72:117-23. [DOI: 10.1016/j.exger.2015.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 09/01/2015] [Accepted: 09/25/2015] [Indexed: 11/29/2022]
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Intracellular Cleavage of the Cx43 C-Terminal Domain by Matrix-Metalloproteases: A Novel Contributor to Inflammation? Mediators Inflamm 2015; 2015:257471. [PMID: 26424967 PMCID: PMC4573893 DOI: 10.1155/2015/257471] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 08/13/2015] [Indexed: 01/11/2023] Open
Abstract
The coordination of tissue function is mediated by gap junctions (GJs) that enable direct cell-cell transfer of metabolic and electric signals. GJs are formed by connexin (Cx) proteins of which Cx43 is most widespread in the human body. Beyond its role in direct intercellular communication, Cx43 also forms nonjunctional hemichannels (HCs) in the plasma membrane that mediate the release of paracrine signaling molecules in the extracellular environment. Both HC and GJ channel function are regulated by protein-protein interactions and posttranslational modifications that predominantly take place in the C-terminal domain of Cx43. Matrix metalloproteases (MMPs) are a major group of zinc-dependent proteases, known to regulate not only extracellular matrix remodeling, but also processing of intracellular proteins. Together with Cx43 channels, both GJs and HCs, MMPs contribute to acute inflammation and a small number of studies reports on an MMP-Cx43 link. Here, we build further on these reports and present a novel hypothesis that describes proteolytic cleavage of the Cx43 C-terminal domain by MMPs and explores possibilities of how such cleavage events may affect Cx43 channel function. Finally, we set out how aberrant channel function resulting from cleavage can contribute to the acute inflammatory response during tissue injury.
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Evidence for pelvic organ prolapse predisposition genes on chromosomes 10 and 17. Am J Obstet Gynecol 2015; 212:771.e1-7. [PMID: 25557205 DOI: 10.1016/j.ajog.2014.12.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 11/07/2014] [Accepted: 12/17/2014] [Indexed: 01/16/2023]
Abstract
OBJECTIVE We conducted a genomewide linkage analysis to identify pelvic organ prolapse (POP) predisposition genes using a resource of high-risk POP pedigrees. STUDY DESIGN Cases are defined as women who reported bothersome symptoms of POP based on standardized symptom questions (Pelvic Floor Distress Inventory, moderately or quite bothered), and/or received treatment for POP documented in medical records. Our complete pedigree resource contains 299 familial POP cases in 83 high-risk pedigrees. Genotype data were obtained from Illumina HumanHap550, 610Q, the Human1M-Duo, Human Omni1-Quad, or the Human Omni 2.5 platforms. A set of single nucleotide polymorphism markers common to all platforms was identified and markers in high linkage disequilibrium were removed. We performed a genomewide linkage analysis under general dominant and recessive models using a Markov chain, Monte Carlo linkage analysis method implemented in MCLINK (University of Utah) software. Because 70 individuals in 32 pedigrees were used in a previously published linkage analysis for a phenotype of POP requiring treatment/surgery, we also performed linkage only including the 225 newly recruited and genotyped cases in 61 pedigrees. RESULTS Linkage analysis using our complete pedigree resource for the loosened criteria of bothersome POP showed evidence for significant genomewide linkage on chromosome 10q24-26 (recessive model, maximum heterogeneity logarithm of odds 3.4); suggestive evidence was identified on chromosomes 6 and 17, and an additional region on chromosome 10. In the subset of only the newly recruited familial POP cases, significant evidence for genomewide linkage was observed on chromosome 17q25 (recessive model, maximum heterogeneity logarithm of odds 3.3), and suggestive evidence for linkage was observed on chromosomes 10 and 11. Neither analysis duplicated the previously published linkage evidence for the POP requiring treatment/surgery phenotype observed on chromosome 9. CONCLUSION While the etiology of this common condition is unknown, this study provides evidence that loci on chromosomes 10q and 17q may contribute to POP etiology.
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The Cardioprotective Effects of Hydrogen Sulfide in Heart Diseases: From Molecular Mechanisms to Therapeutic Potential. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:925167. [PMID: 26078822 PMCID: PMC4442295 DOI: 10.1155/2015/925167] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 12/18/2014] [Indexed: 11/23/2022]
Abstract
Hydrogen sulfide (H2S) is now recognized as a third gaseous mediator along with nitric oxide (NO) and carbon monoxide (CO), though it was originally considered as a malodorous and toxic gas. H2S is produced endogenously from cysteine by three enzymes in mammalian tissues. An increasing body of evidence suggests the involvement of H2S in different physiological and pathological processes. Recent studies have shown that H2S has the potential to protect the heart against myocardial infarction, arrhythmia, hypertrophy, fibrosis, ischemia-reperfusion injury, and heart failure. Some mechanisms, such as antioxidative action, preservation of mitochondrial function, reduction of apoptosis, anti-inflammatory responses, angiogenic actions, regulation of ion channel, and interaction with NO, could be responsible for the cardioprotective effect of H2S. Although several mechanisms have been identified, there is a need for further research to identify the specific molecular mechanism of cardioprotection in different cardiac diseases. Therefore, insight into the molecular mechanisms underlying H2S action in the heart may promote the understanding of pathophysiology of cardiac diseases and lead to new therapeutic targets based on modulation of H2S production.
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Ratio between fms-like tyrosine kinase 1 and placental growth factor in children with congenital heart disease. Pediatr Cardiol 2015; 36:591-9. [PMID: 25388629 DOI: 10.1007/s00246-014-1054-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 10/31/2014] [Indexed: 12/30/2022]
Abstract
Serum levels of soluble fms-like tyrosine kinase 1 (sFlt-1), an antiangiogenic factor, and its binding protein, placental growth factor (PlGF), are altered in women with preeclampsia. Recently, the sFlt-1/PlGF ratio has been shown to predict acute coronary syndrome in adults. However, few reports have described the use of the sFlt-1/PlGF ratio for evaluating an abnormal hemodynamic load in children with congenital heart disease (CHD). The sFlt-1/PlGF ratio was determined in 20 children with atrial septal defects (ASD), 26 children with ventricular septal defects (VSD), 57 children with tetralogy of Fallot (ToF), 35 children who were Fontan candidates (Fontan), and 14 controls. The preoperative sFlt-1/PlGF ratios in the ASD, VSD, and Fontan were significantly higher than those in the controls and were significantly decreased after surgical repair in the ASD and VSD. In the ToF, the sFlt-1/PlGF ratio was highest after first-stage repair and second-highest after final-stage palliation compared with the preoperative levels. The sFlt-1/PlGF ratio was highest after first-stage repair and much lower after final-stage palliation in the Fontan. Furthermore, these ratios correlated with the degree of the ventricular volume overload and hypoxia. Our study clearly demonstrated that the sFlt-1/PlGF ratio increases with volume overload and persistent hypoxia after surgery with CHD. These findings may prove useful in the management of CHD in children.
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Ueland T, Aukrust P, Nymo SH, Kjekshus J, McMurray JJ, Wikstrand J, Wienhues-Thelen UH, Block D, Zaugg C, Gullestad L. Predictive Value of Endostatin in Chronic Heart Failure Patients with Poor Kidney Function. Cardiology 2014; 130:17-22. [DOI: 10.1159/000368220] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 09/03/2014] [Indexed: 11/19/2022]
Abstract
Objectives: Increased circulating endostatin levels have been demonstrated in progressive cardiovascular (CV) and renal disorders. We investigated the predictive value of endostatin in patients with chronic heart failure (HF) and the association between endostatin and renal function. Methods: The interaction between serum endostatin, estimated glomerular filtration rate (eGFR) and predefined endpoints, including the primary endpoint (CV death, nonfatal myocardial infarction, nonfatal stroke; n = 397), all-cause mortality (n = 410), CV death (n = 335) or the coronary endpoint (n = 317), was evaluated in 1,390 patients >60 years of age with ischemic systolic HF in the Controlled Rosuvastatin Multinational Trial in HF (CORONA) population, who were randomly assigned to 10 mg rosuvastatin or placebo. Results: In the population as a whole, endostatin added no predictive information after full multivariable adjustment including eGFR and N-terminal pro-brain natriuretic peptide. Serum endostatin was strongly correlated with eGFR (r = 0.59, p < 0.001). After full multivariable adjustment, an association between high serum endostatin and increased risk of all-cause mortality and decreased risk of the primary and coronary endpoints was seen in HF patients with impaired and preserved renal function, respectively. Conclusions: Endostatin added no predictive information regarding the adverse outcome in patients with chronic systolic HF of ischemic etiology. An increased risk of all-cause mortality was seen in patients with decreased renal function. i 2014 S. Karger AG, Basel
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Moreno-Moral A, Mancini M, D'Amati G, Camici P, Petretto E. Transcriptional network analysis for the regulation of left ventricular hypertrophy and microvascular remodeling. J Cardiovasc Transl Res 2013; 6:931-44. [PMID: 23929067 DOI: 10.1007/s12265-013-9504-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 07/21/2013] [Indexed: 12/31/2022]
Abstract
Hypertension and cardiomyopathies share maladaptive changes of cardiac morphology, eventually leading to heart failure. These include left ventricular hypertrophy (LVH), myocardial fibrosis, and structural remodeling of coronary microcirculation, which is the morphologic hallmark of coronary microvascular dysfunction. To pinpoint the complex molecular mechanisms and pathways underlying LVH-associated cardiac remodeling independent of blood pressure effects, we employed gene network approaches to the rat heart. We used the Spontaneously Hypertensive Rat model showing many features of human hypertensive cardiomyopathy, for which we collected histological and histomorphometric data of the heart and coronary vasculature, and genome-wide cardiac gene expression. Here, we provide a large catalogue of gene co-expression networks in the heart that are significantly associated with quantitative variation in LVH, microvascular remodeling, and fibrosis-related traits. Many of these networks were significantly conserved to human idiopathic and/or ischemic cardiomyopathy patients, suggesting a potential role for these co-expressed genes in human heart disease.
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Affiliation(s)
- Aida Moreno-Moral
- Medical Research Council (MRC) Clinical Sciences Centre, Faculty of Medicine, Imperial College London, Hammersmith Hospital, Imperial Centre for Translational and Experimental Medicine (ICTEM) Building, Du Cane Road, London, W12 0NN, UK
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