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Head KZ, Bolatimi OE, Gripshover TC, Tan M, Li Y, Audam TN, Jones SP, Klinge CM, Cave MC, Wahlang B. Investigating the effects of long-term Aroclor 1260 exposure on fatty liver disease in a diet-induced obesity mouse model. Front Gastroenterol (Lausanne) 2023; 2:1180712. [PMID: 37426695 PMCID: PMC10327714 DOI: 10.3389/fgstr.2023.1180712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Introduction Polychlorinated biphenyls (PCBs) are persistent environmental toxicants that have been implicated in numerous health disorders including liver diseases such as non-alcoholic fatty liver disease (NAFLD). Toxicant-associated NAFLD, also known as toxicant-associated fatty liver disease (TAFLD), consists of a spectrum of disorders ranging from steatosis and steatohepatitis to fibrosis and hepatocellular carcinoma. Previously, our group demonstrated that 12-week exposure to the PCB mixture, Aroclor 1260, exacerbated steatohepatitis in high-fat diet (HFD)-fed mice; however, the longer-term effects of PCBs on TAFLD remain to be elucidated. This study aims to examine the longer-term effects of Aroclor 1260 (>30 weeks) in a diet-induced obesity model to better understand how duration of exposure can impact TAFLD. Methods Male C57BL/6 mice were exposed to Aroclor 1260 (20 mg/kg) or vehicle control by oral gavage at the beginning of the study period and fed either a low-fat diet (LFD) or HFD throughout the study period. Results Aroclor 1260 exposure (>30 weeks) led to steatohepatitis only in LFD-fed mice. Several Aroclor 1260 exposed LFD-fed mice also developed hepatocellular carcinoma (25%), which was absent in HFD-fed mice. The LFD+Aroclor1260 group also exhibited decreased hepatic Cyp7a1 expression and increased pro-fibrotic Acta2 expression. In contrast, longer term Aroclor 1260 exposure in conjunction with HFD did not exacerbate steatosis or inflammatory responses beyond those observed with HFD alone. Further, hepatic xenobiotic receptor activation by Aroclor 1260 was absent at 31 weeks post exposure, suggesting PCB redistribution to the adipose and other extra-hepatic tissues with time. Discussion Overall, the results demonstrated that longer-term PCB exposure worsened TAFLD outcomes independent of HFD feeding and suggests altered energy metabolism as a potential mechanism fueling PCB mediated toxicity without dietary insult. Additional research exploring mechanisms for these longer-term PCB mediated toxicity in TAFLD is warranted.
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Affiliation(s)
- Kimberly Z. Head
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, United States
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY, United States
| | - Oluwanifemi E. Bolatimi
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Tyler C. Gripshover
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Min Tan
- Department of Surgery, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Yan Li
- Department of Surgery, School of Medicine, University of Louisville, Louisville, KY, United States
| | - Timothy N. Audam
- Center for Cardiometabolic Science, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, United States
| | - Steven P. Jones
- Center for Cardiometabolic Science, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY, United States
| | - Carolyn M. Klinge
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Louisville, Louisville, KY, United States
- The Center for Integrative Environmental Health Sciences, University of Louisville, Louisville, KY, United States
| | - Matthew C. Cave
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, United States
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY, United States
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, Louisville, KY, United States
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Louisville, Louisville, KY, United States
- The Center for Integrative Environmental Health Sciences, University of Louisville, Louisville, KY, United States
- University of Louisville (UofL) Superfund Research Center, University of Louisville, Louisville, KY, United States
- Robley Rex Department of Veterans Affairs Medical Center, Louisville, KY, United States
| | - Banrida Wahlang
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, School of Medicine, University of Louisville, Louisville, KY, United States
- The Hepatobiology and Toxicology Center, University of Louisville, Louisville, KY, United States
- The Center for Integrative Environmental Health Sciences, University of Louisville, Louisville, KY, United States
- University of Louisville (UofL) Superfund Research Center, University of Louisville, Louisville, KY, United States
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Fulghum K, Collins HE, Jones SP, Hill BG. Influence of biological sex and exercise on murine cardiac metabolism. J Sport Health Sci 2022; 11:479-494. [PMID: 35688382 PMCID: PMC9338340 DOI: 10.1016/j.jshs.2022.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/07/2022] [Accepted: 04/27/2022] [Indexed: 05/03/2023]
Abstract
Although the structural and functional effects of exercise on the heart are well established, the metabolic changes that occur in the heart during and after exercise remain unclear. In this study, we used metabolomics to assess time-dependent changes in the murine cardiac metabolome following 1 session of treadmill exercise. After the exercise bout, we also recorded blood lactate, glucose, and ketone body levels and measured cardiac mitochondrial respiration. In both male and female mice, moderate- and high-intensity exercise acutely increased blood lactate levels. In both sexes, low- and moderate-intensity exercise augmented circulating 3-hydroxybutryrate levels immediately after the exercise bout; however, only in female mice did high-intensity exercise increase 3-hydroxybutyrate levels, with significant increases occurring 1 h after the exercise session. Untargeted metabolomics analyses of sedentary female and male hearts suggest considerable sex-dependent differences in basal cardiac metabolite levels, with female hearts characterized by higher levels of pantothenate, pyridoxamine, homoarginine, tryptophan, and several glycerophospholipid and sphingomyelin species and lower levels of numerous metabolites, including acetyl coenzyme A, glucuronate, gulonate, hydroxyproline, prolyl-hydroxyproline, carnosine, anserine, and carnitinylated and glycinated species, as compared with male hearts. Immediately after a bout of treadmill exercise, both male and female hearts had higher levels of corticosterone; however, female mice showed more extensive exercise-induced changes in the cardiac metabolome, characterized by significant, time-dependent changes in amino acids (e.g., serine, alanine, tyrosine, tryptophan, branched-chain amino acids) and the ketone body 3-hydroxybutyrate. Results from experiments using isolated cardiac mitochondria suggest that high-intensity treadmill exercise does not acutely affect respiration or mitochondrial coupling; however, female cardiac mitochondria demonstrate generally higher adenosine diphosphate sensitivity compared with male cardiac mitochondria. Collectively, these findings in mice reveal key sex-dependent differences in cardiac metabolism and suggest that the metabolic network in the female heart is more responsive to physiological stress caused by exercise.
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Affiliation(s)
- Kyle Fulghum
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA; Department of Physiology, University of Louisville, Louisville, KY 40202, USA
| | - Helen E Collins
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA
| | - Steven P Jones
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA
| | - Bradford G Hill
- Diabetes and Obesity Center, Department of Medicine, Division of Environmental Medicine, Christina Lee Brown Envirome Institute, University of Louisville, Louisville, KY 40202, USA.
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Fulghum KL, Smith JB, Chariker J, Garrett LF, Brittian KR, Lorkiewicz P, McNally LA, Uchida S, Jones SP, Hill BG, Collins HE. Metabolic Signatures of Pregnancy-Induced Cardiac Growth. Am J Physiol Heart Circ Physiol 2022; 323:H146-H164. [PMID: 35622533 DOI: 10.1152/ajpheart.00105.2022] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The goal of this study was to develop an atlas of the metabolic, transcriptional, and proteomic changes that occur with pregnancy in the maternal heart. Timed pregnancy studies in FVB/NJ mice revealed significant increases in heart size by day 8 of pregnancy (mid-pregnancy; MP), which was sustained throughout the rest of the term compared with non-pregnant controls. Cardiac hypertrophy and myocyte cross-sectional area were highest 7 d after birth (post-birth; PB) and were associated with significant increases in end-diastolic and end-systolic left ventricular volumes and cardiac output. Metabolomics analyses revealed that, by day 16 of pregnancy (late pregnancy; LP), metabolites associated with nitric oxide production as well as acylcholines, sphingomyelins, and fatty acid species were elevated, which coincided with a lower activation state of phosphofructokinase and higher levels of pyruvate dehydrogenase kinase 4 (Pdk4). In the postpartum period, urea cycle metabolites, polyamines, and phospholipid levels were markedly elevated in the maternal heart. Cardiac transcriptomics in LP revealed significant increases in not only Pdk4, but also genes that regulate glutamate and ketone body oxidation, which were preceded in MP by higher expression of transcripts controlling cell proliferation and angiogenesis. Proteomics analysis of the maternal heart in LP and PB revealed significant reductions in several contractile filaments and mitochondrial complex subunits. Collectively, these findings describe the coordinated molecular changes that occur in the maternal heart during and after pregnancy.
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Affiliation(s)
- Kyle L Fulghum
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Juliette B Smith
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Julia Chariker
- KY INBRE Genomics Core, University of Louisville, Louisville, KY, United States
| | - Lauren F Garrett
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Kenneth R Brittian
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Pawel Lorkiewicz
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Lindsey A McNally
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Shizuka Uchida
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
| | - Steven P Jones
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Bradford G Hill
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Helen E Collins
- Diabetes and Obesity Center, Christina Lee Brown Envirome Institute, Division of Environmental Medicine, Department of Medicine, University of Louisville, Louisville, KY, United States
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Sadri G, Fischer AG, Brittian KR, Elliott E, Nystoriak MA, Uchida S, Wysoczynski M, Leask A, Jones SP, Moore JB. Collagen type XIX regulates cardiac extracellular matrix structure and ventricular function. Matrix Biol 2022; 109:49-69. [PMID: 35346795 PMCID: PMC9161575 DOI: 10.1016/j.matbio.2022.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/13/2022] [Accepted: 03/22/2022] [Indexed: 12/26/2022]
Abstract
The cardiac extracellular matrix plays essential roles in homeostasis and injury responses. Although the role of fibrillar collagens have been thoroughly documented, the functions of non-fibrillar collagen members remain underexplored. These include a distinct group of non-fibrillar collagens, termed, fibril-associated collagens with interrupted triple helices (FACITs). Recent reports of collagen type XIX (encoded by Col19a1) expression in adult heart and evidence of its enhanced expression in cardiac ischemia suggest important functions for this FACIT in cardiac ECM structure and function. Here, we examined the cellular source of collagen XIX in the adult murine heart and evaluated its involvement in ECM structure and ventricular function. Immunodetection of collagen XIX in fractionated cardiovascular cell lineages revealed fibroblasts and smooth muscle cells as the primary sources of collagen XIX in the heart. Based on echocardiographic and histologic analyses, Col19a1 null (Col19a1N/N) mice exhibited reduced systolic function, thinning of left ventricular walls, and increased cardiomyocyte cross-sectional areas-without gross changes in myocardial collagen content or basement membrane morphology. Col19a1N/N cardiac fibroblasts had augmented expression of several enzymes involved in the synthesis and stability of fibrillar collagens, including PLOD1 and LOX. Furthermore, second harmonic generation-imaged ECM derived from Col19a1N/N cardiac fibroblasts, and transmission electron micrographs of decellularized hearts from Col19a1N/N null animals, showed marked reductions in fibrillar collagen structural organization. Col19a1N/N mice also displayed enhanced phosphorylation of focal adhesion kinase (FAK), signifying de-repression of the FAK pathway-a critical mediator of cardiomyocyte hypertrophy. Collectively, we show that collagen XIX, which had a heretofore unknown role in the mammalian heart, participates in the regulation of cardiac structure and function-potentially through modulation of ECM fibrillar collagen structural organization. Further, these data suggest that this FACIT may modify ECM superstructure via acting at the level of the fibroblast to regulate their expression of collagen synthetic and stabilization enzymes.
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Affiliation(s)
- Ghazal Sadri
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Annalara G Fischer
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Kenneth R Brittian
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Erin Elliott
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Matthew A Nystoriak
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Shizuka Uchida
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
| | - Marcin Wysoczynski
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Andrew Leask
- College of Dentistry, University of Saskatchewan, Saskatoon, SK, Canada
| | - Steven P Jones
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Joseph B Moore
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY, USA.
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5
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Jones SP, Kerner M, Luisoni G. Erratum: Next-to-Leading-Order QCD Corrections to Higgs Boson Plus Jet Production with Full Top-Quark Mass Dependence [Phys. Rev. Lett. 120, 162001 (2018)]. Phys Rev Lett 2022; 128:059901. [PMID: 35179947 DOI: 10.1103/physrevlett.128.059901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Indexed: 06/14/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.120.162001.
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6
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Lindsey ML, Brunt KR, Kirk JA, Kleinbongard P, Calvert JW, de Castro Brás LE, DeLeon-Pennell KY, Del Re DP, Frangogiannis NG, Frantz S, Gumina RJ, Halade GV, Jones SP, Ritchie RH, Spinale FG, Thorp EB, Ripplinger CM, Kassiri Z. Guidelines for in vivo mouse models of myocardial infarction. Am J Physiol Heart Circ Physiol 2021; 321:H1056-H1073. [PMID: 34623181 PMCID: PMC8834230 DOI: 10.1152/ajpheart.00459.2021] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/05/2021] [Accepted: 10/05/2021] [Indexed: 12/11/2022]
Abstract
Despite significant improvements in reperfusion strategies, acute coronary syndromes all too often culminate in a myocardial infarction (MI). The consequent MI can, in turn, lead to remodeling of the left ventricle (LV), the development of LV dysfunction, and ultimately progression to heart failure (HF). Accordingly, an improved understanding of the underlying mechanisms of MI remodeling and progression to HF is necessary. One common approach to examine MI pathology is with murine models that recapitulate components of the clinical context of acute coronary syndrome and subsequent MI. We evaluated the different approaches used to produce MI in mouse models and identified opportunities to consolidate methods, recognizing that reperfused and nonreperfused MI yield different responses. The overall goal in compiling this consensus statement is to unify best practices regarding mouse MI models to improve interpretation and allow comparative examination across studies and laboratories. These guidelines will help to establish rigor and reproducibility and provide increased potential for clinical translation.
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Affiliation(s)
- Merry L Lindsey
- Department of Cellular and Integrative Physiology, Center for Heart and Vascular Research, University of Nebraska Medical Center, Omaha, Nebraska
- Research Service, Nebraska-Western Iowa Health Care System, Omaha, Nebraska
| | - Keith R Brunt
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Saint John, New Brunswick, Canada
| | - Jonathan A Kirk
- Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Chicago, Illinois
| | - Petra Kleinbongard
- Institute for Pathophysiology, West German Heart and Vascular Center, University of Essen Medical School, Essen, Germany
| | - John W Calvert
- Carlyle Fraser Heart Center of Emory University Hospital Midtown, Atlanta, Georgia
- Division of Cardiothoracic Surgery, Department of Surgery, Emory University School of Medicine, Atlanta, Georgia
| | - Lisandra E de Castro Brás
- Department of Physiology, The Brody School of Medicine, East Carolina University, Greenville, North Carolina
| | - Kristine Y DeLeon-Pennell
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
- Research Service, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
| | - Dominic P Del Re
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, Newark, New Jersey
| | - Nikolaos G Frangogiannis
- Division of Cardiology, Department of Medicine, The Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, New York
| | - Stefan Frantz
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Richard J Gumina
- Division of Cardiovascular Medicine, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical Center, Columbus, Ohio
- The Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Ganesh V Halade
- Division of Cardiovascular Sciences, Department of Medicine, University of South Florida, Tampa, Florida
| | - Steven P Jones
- Department of Medicine, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
| | - Rebecca H Ritchie
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), Victoria, Australia
| | - Francis G Spinale
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the Columbia Veteran Affairs Medical Center, Columbia, South Carolina
| | - Edward B Thorp
- Department of Pathology and Feinberg Cardiovascular and Renal Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Crystal M Ripplinger
- Department of Pharmacology, University of California Davis School of Medicine, Davis, California
| | - Zamaneh Kassiri
- Department of Physiology, Cardiovascular Research Center, University of Alberta, Edmonton, Alberta, Canada
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Zelko IN, Dassanayaka S, Malovichko MV, Howard CM, Garrett LF, Uchida S, Brittian KR, Conklin DJ, Jones SP, Srivastava S. Chronic Benzene Exposure Aggravates Pressure Overload-Induced Cardiac Dysfunction. Toxicol Sci 2021; 185:64-76. [PMID: 34718823 DOI: 10.1093/toxsci/kfab125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Benzene is a ubiquitous environmental pollutant abundant in household products, petrochemicals and cigarette smoke. Benzene is a well-known carcinogen in humans and experimental animals; however, little is known about the cardiovascular toxicity of benzene. Recent population-based studies indicate that benzene exposure is associated with an increased risk for heart failure. Nonetheless, it is unclear whether benzene exposure is sufficient to induce and/or exacerbate heart failure. We examined the effects of benzene (50 ppm, 6 h/day, 5 days/week, 6 weeks) or HEPA-filtered air exposure on transverse aortic constriction (TAC)-induced pressure overload in male C57BL/6J mice. Our data show that benzene exposure had no effect on cardiac function in the Sham group; however, it significantly compromised cardiac function as depicted by a significant decrease in fractional shortening and ejection fraction, as compared with TAC/Air-exposed mice. RNA-seq analysis of the cardiac tissue from the TAC/benzene-exposed mice showed a significant increase in several genes associated with adhesion molecules, cell-cell adhesion, inflammation, and stress response. In particular, neutrophils were implicated in our unbiased analyses. Indeed, immunofluorescence studies showed that TAC/benzene exposure promotes infiltration of CD11b+/S100A8+/myeloperoxidase+-positive neutrophils in the hearts by 3-fold. In vitro, the benzene metabolites, hydroquinone and catechol, induced the expression of P-selectin in cardiac microvascular endothelial cells by 5-fold and increased the adhesion of neutrophils to these endothelial cells by 1.5-2.0-fold. Benzene metabolite-induced adhesion of neutrophils to the endothelial cells was attenuated by anti-P-selectin antibody. Together, these data suggest that benzene exacerbates heart failure by promoting endothelial activation and neutrophil recruitment.
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Affiliation(s)
- Igor N Zelko
- University of Louisville Superfund Research Center.,Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Sujith Dassanayaka
- Diabetes and Obesity Center.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Marina V Malovichko
- University of Louisville Superfund Research Center.,Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Caitlin M Howard
- Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Lauren F Garrett
- Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Shizuka Uchida
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen SV, Denmark
| | - Kenneth R Brittian
- Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Daniel J Conklin
- University of Louisville Superfund Research Center.,Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Steven P Jones
- Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
| | - Sanjay Srivastava
- University of Louisville Superfund Research Center.,Diabetes and Obesity Center.,Envirome Institute.,Department of Medicine, Division of Environmental Medicine, University of Louisville, Louisville, KY 40202
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Audam TN, Howard CM, Garrett LF, Zheng YW, Bradley JA, Brittian KR, Frank MW, Fulghum KL, Pólos M, Herczeg S, Merkely B, Radovits T, Uchida S, Hill BG, Dassanayaka S, Jackowski S, Jones SP. Cardiac PANK1 deletion exacerbates ventricular dysfunction during pressure overload. Am J Physiol Heart Circ Physiol 2021; 321:H784-H797. [PMID: 34533403 PMCID: PMC8794231 DOI: 10.1152/ajpheart.00411.2021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/03/2021] [Accepted: 09/03/2021] [Indexed: 12/13/2022]
Abstract
Coenzyme A (CoA) is an essential cofactor required for intermediary metabolism. Perturbations in homeostasis of CoA have been implicated in various pathologies; however, whether CoA homeostasis is changed and the extent to which CoA levels contribute to ventricular function and remodeling during pressure overload has not been explored. In this study, we sought to assess changes in CoA biosynthetic pathway during pressure overload and determine the impact of limiting CoA on cardiac function. We limited cardiac CoA levels by deleting the rate-limiting enzyme in CoA biosynthesis, pantothenate kinase 1 (Pank1). We found that constitutive, cardiomyocyte-specific Pank1 deletion (cmPank1-/-) significantly reduced PANK1 mRNA, PANK1 protein, and CoA levels compared with Pank1-sufficient littermates (cmPank1+/+) but exerted no obvious deleterious impact on the mice at baseline. We then subjected both groups of mice to pressure overload-induced heart failure. Interestingly, there was more ventricular dilation in cmPank1-/- during the pressure overload. To explore potential mechanisms contributing to this phenotype, we performed transcriptomic profiling, which suggested a role for Pank1 in regulating fibrotic and metabolic processes during the pressure overload. Indeed, Pank1 deletion exacerbated cardiac fibrosis following pressure overload. Because we were interested in the possibility of early metabolic impacts in response to pressure overload, we performed untargeted metabolomics, which indicated significant changes to metabolites involved in fatty acid and ketone metabolism, among other pathways. Collectively, our study underscores the role of elevated CoA levels in supporting fatty acid and ketone body oxidation, which may be more important than CoA-driven, enzyme-independent acetylation in the failing heart.NEW & NOTEWORTHY Changes in CoA homeostasis have been implicated in a variety of metabolic diseases; however, the extent to which changes in CoA homeostasis impacts remodeling has not been explored. We show that limiting cardiac CoA levels via PANK deletion exacerbated ventricular remodeling during pressure overload. Our results suggest that metabolic alterations, rather than structural alterations, associated with Pank1 deletion may underlie the exacerbated cardiac phenotype during pressure overload.
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Affiliation(s)
- Timothy N Audam
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Caitlin M Howard
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Lauren F Garrett
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Yi Wei Zheng
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - James A Bradley
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Kenneth R Brittian
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Matthew W Frank
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Kyle L Fulghum
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Miklós Pólos
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Szilvia Herczeg
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Shizuka Uchida
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Bradford G Hill
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Sujith Dassanayaka
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Suzanne Jackowski
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Steven P Jones
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
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9
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Jones SP. Angiotensinogen Takes Some of the Spotlight From Angiotensin II in the Cardiohepatic Axis. Circ Res 2021; 129:565-567. [PMID: 34410822 DOI: 10.1161/circresaha.121.319784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Steven P Jones
- Diabetes and Obesity Center, University of Louisville, KY
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10
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Alcaide P, Jones SP. The Sweet Smell of Progress With Hyaluronan and Heart Failure. Hypertension 2021; 77:1928-1930. [PMID: 33979180 DOI: 10.1161/hypertensionaha.121.17211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Pilar Alcaide
- Department of Immunology, Tufts University School of Medicine, Boston, MA (P.A.)
| | - Steven P Jones
- Diabetes and Obesity Center, University of Louisville School of Medicine, Louisville, KY (S.P.J.)
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11
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Dassanayaka S, Brittian KR, Long BW, Higgins LA, Bradley JA, Audam TN, Jurkovic A, Gumpert AM, Harrison LT, Hartyánszky I, Perge P, Merkely B, Radovits T, Hanover JA, Jones SP. Cardiomyocyte Oga haploinsufficiency increases O-GlcNAcylation but hastens ventricular dysfunction following myocardial infarction. PLoS One 2020; 15:e0242250. [PMID: 33253217 PMCID: PMC7703924 DOI: 10.1371/journal.pone.0242250] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 10/29/2020] [Indexed: 01/02/2023] Open
Abstract
Rationale The beta-O-linkage of N-acetylglucosamine (i.e., O-GlcNAc) to proteins is a pro-adaptive response to cellular insults. To this end, increased protein O-GlcNAcylation improves short-term survival of cardiomyocytes subjected to acute injury. This observation has been repeated by multiple groups and in multiple models; however, whether increased protein O-GlcNAcylation plays a beneficial role in more chronic settings remains an open question. Objective Here, we queried whether increasing levels of cardiac protein O-GlcNAcylation would be beneficial during infarct-induced heart failure. Methods and results To achieve increased protein O-GlcNAcylation, we targeted Oga, the gene responsible for removing O-GlcNAc from proteins. Here, we generated mice with cardiomyocyte-restricted, tamoxifen-inducible haploinsufficient Oga gene. In the absence of infarction, we observed a slight reduction in ejection fraction in Oga deficient mice. Overall, Oga reduction had no major impact on ventricular function. In additional cohorts, mice of both sexes and both genotypes were subjected to infarct-induced heart failure and followed for up to four weeks, during which time cardiac function was assessed via echocardiography. Contrary to our prediction, the Oga deficient mice exhibited exacerbated—not improved—cardiac function at one week following infarction. When the observation was extended to 4 wk post-MI, this acute exacerbation was lost. Conclusions The present findings, coupled with our previous work, suggest that altering the ability of cardiomyocytes to either add or remove O-GlcNAc modifications to proteins exacerbates early infarct-induced heart failure. We speculate that more nuanced approaches to regulating O-GlcNAcylation are needed to understand its role—and, in particular, the possibility of cycling, in the pathophysiology of the failing heart.
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Affiliation(s)
- Sujith Dassanayaka
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - Kenneth R. Brittian
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - Bethany W. Long
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - Lauren A. Higgins
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - James A. Bradley
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - Timothy N. Audam
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - Andrea Jurkovic
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - Anna M. Gumpert
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - Linda T. Harrison
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
| | - István Hartyánszky
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary, United states of America
| | - Péter Perge
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary, United states of America
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary, United states of America
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary, United states of America
| | - John A. Hanover
- Laboratory of Cell and Molecular Biology, NIH-NIDDK, Bethesda, MD, United states of America
| | - Steven P. Jones
- Department of Medicine, University of Louisville, Louisville, KY, United states of America
- * E-mail:
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12
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Fulghum KL, Lorkiewicz PK, Cassel T, Fan TM, Jones SP, Hill BG. Abstract 524: Phosphofructokinase Coordinates Anabolic Pathways in the Heart. Circ Res 2020. [DOI: 10.1161/res.127.suppl_1.524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Energy provision and biosynthesis are thought to be controlled by amphibolic enzymes such as phosphofructokinase (PFK). Nevertheless, it remains unclear how PFK influences collateral biosynthetic pathways in the heart. Here, we investigated the control exerted by PFK on anabolic pathways in the heart using
in vivo
deep network tracing. Wild-type (WT) mice and mice overexpressing kinase- or phosphatase-deficient 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase transgenes, termed respectively Glyco
Lo
or Glyco
Hi
mice, were fed a liquid diet containing
13
C
6
-glucose for 18 h. From freeze-clamped hearts, metabolite abundance and
13
C enrichment were then assessed by ion chromatography-mass spectrometry. Compared with Glyco
Hi
and WT hearts, Glyco
Lo
hearts had remarkably higher levels and
13
C enrichment of glucose 6-phosphate, fructose 6-phosphate (F6P) (p<0.01 each,
n
=4/gp), and purine and pyrimidine biosynthetic pathway intermediates. In addition to elevated activity of nucleotide biosynthetic pathways, we also found in Glyco
Lo
hearts higher
13
C-hexose incorporation into N-acetyl-D-glucosamine 6-phosphate (p<0.05); however, the levels of UDP-GlcNAc and its enrichment with
13
C were not different between the groups, which suggests that PFK activity influences the hexosamine biosynthetic pathway primarily by modulating F6P incorporation. Whereas Glyco
Lo
hearts showed lower
13
C fractional enrichment in triacylglycerols and hexosyl ceramide species, Glyco
Hi
hearts showed higher
13
C fractional enrichment in ceramide species. Interestingly, Glyco
Lo
hearts had 2-fold lower levels of alpha-ketoglutarate with concomitant increases in glutamate abundance. Energy charge values ranged from 0.69-0.81 with no differences observed between groups.These results suggest that PFK regulates lipid biosynthesis and collateral biosynthetic pathways of glucose metabolism in the heart. Understanding how these pathways contribute to cardiac remodeling could be important for developing metabolic therapies to improve cardiac health.
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13
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Collins HE, Fulghum K, McNally LA, Foster ML, Brittian K, Uchida S, Nystoriak MA, Jones SP, Hill BG. Abstract 526: Unraveling the Molecular Signature of Pregnancy Induced Hypertrophy. Circ Res 2020. [DOI: 10.1161/res.127.suppl_1.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cardiovascular disease is the leading cause of death in pregnant and postpartum women. During pregnancy, the maternal heart rapidly adapts to the increasing physiological and metabolic demands of the growing fetus. This adaptation often takes the form of a physiological hypertrophy in which the maternal heart grows to increase cardiac output; however, the molecular processes underlying pregnancy-induced hypertrophy (PIH) are poorly understood. The goal of this study was to examine the transcriptomic and metabolic signatures associated with the structural and functional adaptations of the heart to pregnancy. Therefore, we performed timed pregnancy studies in 12-week-old female FVB/NJ mice, which were distributed into the following groups: non-pregnant control (NP;
n
= 14), mid-pregnancy (MP, 6d pregnant;
n
= 11), late-pregnancy (LP, 16d pregnant;
n
= 13), and 1-wk post birth (PB;
n
= 8). Heart weight to tibia length were higher in MP (7.77±1.02 mg/mm;
p
<0.05), LP (7.84±0.87 mg/mm;
p
<0.05), and PB mice (9.86±1.14 mg/mm;
p
<0.05) compared with NP mice (6.54±0.74 mg/mm). The sustained increase in PB heart weight was associated with increased myocyte cross sectional area, consistent with cardiomyocyte hypertrophy. Compared with NP hearts, echocardiographic measurements suggest significant increases in both end diastolic (36.0±5.1 vs 61.2±5.9 μl;
p
<0.05) and systolic LV volume (9.4±3.8 vs 21.0±1.4 μl;
p
<0.05) in PB hearts. These changes in PB hearts were associated with a significant increase in LV mass and a decline in ejection fraction. In LP and PB hearts, we also found higher expression of markers of hypertrophy (
Nppa, Nppb, Myh7
). Subsequent RNA-seq analyses revealed enrichment in genes involved in cell proliferation, cytokinesis, and transcription in MP hearts; in metabolism genes in LP hearts; and in fibrotic and extracellular matrix genes in PB hearts. Together, these findings reveal the key molecular signature underlying the structural and functional adaptation of the heart during pregnancy and parturition, and may shed light on the molecular processes underlying PIH.
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14
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Altamimi TR, Audam TN, Zheng Y, Gibb A, Liu S, Jones SP, Hill BG. Abstract 517: Substrate Dependence of Mitochondrial Supercomplex Abundance in Murine Heart. Circ Res 2020. [DOI: 10.1161/res.127.suppl_1.517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mitochondrial supercomplexes are prominent in mammalian tissues that have high energy demand. Nevertheless, the mechanisms that regulate supercomplex formation and abundance remain unclear. In this study, we examined how myocardial fuel preference regulated by constitutive changes in phosphofructokinase (PFK) activity
in vivo
or by differential substrate provision to isolated mitochondria affect mitochondrial supercomplexes. Protein complexes from digitonin-solubilized cardiac mitochondria were resolved by blue-native polyacrylamide gel electrophoresis and were identified by mass spectrometry and immunoblotting to contain Complexes I, III, and IV as well as accessory proteins. Mitochondria from hearts with low PFK activity (Glyco
Lo
hearts) had higher mitochondrial supercomplex abundance and activity compared with mitochondria from wild-type (WT) or Glyco
Hi
hearts. Incubation of WT mitochondria with fatty acyl carnitine promoted higher supercomplex formation than did incubation with pyruvate, suggesting that substrate utilization is sufficient to regulate mitochondrial supercomplex abundance. These data are consistent with the hypothesis that mitochondrial supercomplex abundance is regulated in a substrate-dependent manner and suggest that metabolic scenarios favoring fat oxidation may promote supercomplex abundance.
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15
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Doherty AJ, Jones SP, Chauhan U, Gibson J. Eating well, living well and weight management: A co-produced semi-qualitative study of barriers and facilitators experienced by adults with intellectual disabilities. J Intellect Disabil 2020; 24:158-176. [PMID: 29764278 DOI: 10.1177/1744629518773938] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Adults with intellectual disabilities in England experience health inequalities. They are more likely than their non-disabled peers to be obese and at risk of serious medical conditions such as heart disease, stroke and type 2 diabetes. This semi-qualitative study engaged adults with intellectual disabilities in a co-production process to explore their perceived barriers and facilitators to eating well, living well and weight management. Nineteen participants with intellectual disabilities took part in four focus groups and one wider group discussion. They were supported by eight of their carers or support workers. Several barriers were identified including personal income restrictions, carers' and support workers' unmet training needs, a lack of accessible information, inaccessible services and societal barriers such as the widespread advertising of less healthy foodstuffs. A key theme of frustration with barriers emerged from analysis of participants' responses. Practical solutions suggested by participants included provision of clear and accessible healthy lifestyle information, reasonable adjustments to services, training, 'buddying' support systems or schemes and collaborative working to improve policy and practice.
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Affiliation(s)
- A J Doherty
- School of Nursing, Faculty of Health & Wellbeing, University of Central Lancashire, UK
| | - S P Jones
- School of Nursing, Faculty of Health & Wellbeing, University of Central Lancashire, UK
| | - U Chauhan
- MacKenzie Chair in Primary Care Medicine, Faculty of Clinical and Biomedical Sciences, University of Central Lancashire
| | - Jme Gibson
- School of Nursing, Faculty of Health & Wellbeing, University of Central Lancashire, UK
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16
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Audam TN, Nong Y, Tomlin A, Jurkovic A, Li H, Zhu X, Long BW, Zheng YW, Weirick T, Brittian KR, Riggs DW, Gumpert A, Uchida S, Guo Y, Wysoczynski M, Jones SP. Cardiac mesenchymal cells from failing and nonfailing hearts limit ventricular dilation when administered late after infarction. Am J Physiol Heart Circ Physiol 2020; 319:H109-H122. [PMID: 32442025 DOI: 10.1152/ajpheart.00114.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Although cell therapy-mediated cardiac repair offers promise for treatment/management of heart failure, lack of fundamental understanding of how cell therapy works limits its translational potential. In particular, whether reparative cells from failing hearts differ from cells derived from nonfailing hearts remains unexplored. Here, we assessed differences between cardiac mesenchymal cells (CMC) derived from failing (HF) versus nonfailing (Sham) hearts and whether the source of donor cells (i.e., from HF vs. Sham) limits reparative capacity, particularly when administered late after infarction. To determine the impact of the donor source of CMCs, we characterized the transcriptional profile of CMCs isolated from sham (Sham-CMC) and failing (HF-CMC) hearts. RNA-seq analysis revealed unique transcriptional signatures in Sham-CMC and HF-CMC, suggesting that the donor source impacts CMC. To determine whether the donor source affects reparative potential, C57BL6/J female mice were subjected to 60 min of regional myocardial ischemia and then reperfused for 35 days. In a randomized, controlled, and blinded fashion, vehicle, HF-CMC, or Sham-CMC were injected into the lumen of the left ventricle at 35 days post-MI. An additional 5 weeks later, cardiac function was assessed by echocardiography, which indicated that delayed administration of Sham-CMC and HF-CMC attenuated ventricular dilation. We also determined whether Sham-CMC and HF-CMC treatments affected ventricular histopathology. Our data indicate that the donor source (nonfailing vs. failing hearts) affects certain aspects of CMC, and these insights may have implications for future studies. Our data indicate that delayed administration of CMC limits ventricular dilation and that the source of CMC may influence their reparative actions.NEW & NOTEWORTHY Most preclinical studies have used only cells from healthy, nonfailing hearts. Whether donor condition (i.e., heart failure) impacts cells used for cell therapy is not known. We directly tested whether donor condition impacted the reparative effects of cardiac mesenchymal cells in a chronic model of myocardial infarction. Although cells from failing hearts differed in multiple aspects, they retained the potential to limit ventricular remodeling.
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Affiliation(s)
- Timothy N Audam
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Yibing Nong
- Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Alex Tomlin
- Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Andrea Jurkovic
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Hong Li
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Xiaoping Zhu
- Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Bethany W Long
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Yi Wei Zheng
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Tyler Weirick
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky.,Cardiovascular Innovation Institute, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Kenneth R Brittian
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Daniel W Riggs
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Anna Gumpert
- Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Shizuka Uchida
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky.,Cardiovascular Innovation Institute, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Yiru Guo
- Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Marcin Wysoczynski
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
| | - Steven P Jones
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, Kentucky
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17
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Hammouda K, Khalifa F, Abdeltawab H, Elnakib A, Giridharan GA, Zhu M, Ng CK, Dassanayaka S, Kong M, Darwish HE, Mohamed TMA, Jones SP, El-Baz A. A New Framework for Performing Cardiac Strain Analysis from Cine MRI Imaging in Mice. Sci Rep 2020; 10:7725. [PMID: 32382124 PMCID: PMC7205890 DOI: 10.1038/s41598-020-64206-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 04/13/2020] [Indexed: 01/17/2023] Open
Abstract
Cardiac magnetic resonance (MR) imaging is one of the most rigorous form of imaging to assess cardiac function in vivo. Strain analysis allows comprehensive assessment of diastolic myocardial function, which is not indicated by measuring systolic functional parameters using with a normal cine imaging module. Due to the small heart size in mice, it is not possible to perform proper tagged imaging to assess strain. Here, we developed a novel deep learning approach for automated quantification of strain from cardiac cine MR images. Our framework starts by an accurate localization of the LV blood pool center-point using a fully convolutional neural network (FCN) architecture. Then, a region of interest (ROI) that contains the LV is extracted from all heart sections. The extracted ROIs are used for the segmentation of the LV cavity and myocardium via a novel FCN architecture. For strain analysis, we developed a Laplace-based approach to track the LV wall points by solving the Laplace equation between the LV contours of each two successive image frames over the cardiac cycle. Following tracking, the strain estimation is performed using the Lagrangian-based approach. This new automated system for strain analysis was validated by comparing the outcome of these analysis with the tagged MR images from the same mice. There were no significant differences between the strain data obtained from our algorithm using cine compared to tagged MR imaging. Furthermore, we demonstrated that our new algorithm can determine the strain differences between normal and diseased hearts.
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Affiliation(s)
- K Hammouda
- BioImaging Laboratory, Department of Bioengineering, University of Louisville, Louisville, KY, USA
| | - F Khalifa
- BioImaging Laboratory, Department of Bioengineering, University of Louisville, Louisville, KY, USA
| | - H Abdeltawab
- BioImaging Laboratory, Department of Bioengineering, University of Louisville, Louisville, KY, USA
| | - A Elnakib
- Electronics and Communications Engineering Department, Faculty of Engineeering, Mansoura University, Mansoura, Egypt
| | - G A Giridharan
- BioImaging Laboratory, Department of Bioengineering, University of Louisville, Louisville, KY, USA
| | - M Zhu
- Department of Radiology, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - C K Ng
- Department of Radiology, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - S Dassanayaka
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - M Kong
- Department of Bioinformatics and Biostatistics, SPHIS, University of Louisville, Louisville, KY, USA
| | - H E Darwish
- Mathematics Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - T M A Mohamed
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, KY, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - S P Jones
- Diabetes and Obesity Center, Department of Medicine, University of Louisville, Louisville, KY, USA
| | - A El-Baz
- BioImaging Laboratory, Department of Bioengineering, University of Louisville, Louisville, KY, USA.
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18
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Hankin RA, Jones SP. The impact of educational interventions on clinicians' knowledge of radiation protection: An integrative review. Radiography (Lond) 2020; 26:e179-e185. [PMID: 32052790 DOI: 10.1016/j.radi.2020.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 01/31/2023]
Abstract
OBJECTIVES The aim of this review is to explore the impact of educational interventions on clinicians' knowledge of radiation protection. KEY FINDINGS Following a comprehensive search of MEDLINE and EMBASE from 2000 to 2018, 1795 studies were identified, eight of which met the criteria for this review. All eight studies utilised pretest-posttest designs and involved the education of medical students or doctors. All studies reported an increase in participants' knowledge of radiation protection, five of which were statistically significant. In two studies, over half of participants stated that education received would impact on their future imaging requesting practice. CONCLUSION Whilst a range of educational interventions have been shown to improve knowledge of radiation protection, there was wide variation in the study settings and type of educational programmes delivered. No studies assessed long-term knowledge retention or the impact on clinical practice. Therefore, robust research is needed to accurately measure the impact of educational programmes on knowledge of radiation protection in the UK and the implications this may have on referral practices. IMPLICATIONS FOR PRACTICE This review revealed that educational interventions are effective in increasing participants' knowledge levels of radiation protection. It is necessary to assess and ensure that this improvement in knowledge actually translates into an impact on referral practice/behaviour. The ideal outcome being that fewer unnecessary examinations are requested and our patients are protected from a needless increased radiation burden.
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Affiliation(s)
- R A Hankin
- Main X-ray, Royal Preston Hospital, Lancashire Teaching Hospitals NHS Foundation Trust, Sharoe Green Lane, Fulwood, Preston, PR2 9HT, UK.
| | - S P Jones
- Brook Building Room 445, School of Nursing, University of Central Lancashire, Preston, PR1 2HE, UK.
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19
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Audam TN, Dassanayaka S, Jurkovic A, Long B, Brittian KR, Wysoczynski M, Jones SP. Abstract 823: The Extracellular Matrix Component, Hyaluronan, Provokes a Pro-Inflammatory Phenotype in Macrophages. Circ Res 2019. [DOI: 10.1161/res.125.suppl_1.823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
The extracellular matrix (ECM) provides structural and functional support for the myocardium, but myocardial infarction (MI) changes the composition of the ECM. One of the chief components of the ECM, hyaluronan (HA), is elevated after MI; however, specific biological actions of HA—particularly at the level of infiltrating immune cells and implications of such interactions on ventricular remodeling—have not been explored.
Goals:
Because upregulation of HA coincides with macrophage infiltration after MI, we determined whether hyaluronan interacts with macrophages and investigated the implication of such interactions on macrophage function.
Methods:
WT mice were subjected to non-reperfused MI to determine changes in hyaluronan synthases (HAS), hyaluronidases (HYAL), and HA levels in the heart. Interaction of HA with macrophages was studied by polarizing bone marrow derived macrophages and analyzing cells by flow cytometry. Next, we characterized the ability of macrophages to metabolize HA by profiling polarized macrophages for HA-metabolizing enzymes, HA receptors, HA-binding proteins, hyaluronidase activity, and phagocytosis.
Results:
Compared to Sham hearts, MI (n=5/group) augmented the expression of HAS-2 (10-fold, p=0.002) and HYAL-2 (2 to 4-fold, p=0.0004) in the infarct and remote regions of the heart at 5 d post-MI. HA levels (n=8/group) were elevated in the infarct (1 to 2-fold, p=0.0200) and remote (2 to 3-fold, p=0.0007) regions of the heart compared to sham hearts. Polarizing macrophages (n=3/group) in the presence fluorescein-conjugated HA (HA-FL) showed that naïve (M0), pro-inflammatory (M1), and pro-resolving (M2) macrophages interact with HA-FL; M1 showed the highest FITC intensity. Interestingly, exposing macrophages (n=5/group) to HA provoked an inflammatory phenotype, as reflected by enhanced expression of TNFα (4-fold, p=0.0001) and IL-1β (7-fold, p=0.0094) mRNA; HA also enhanced macrophage phagocytosis (0.5-fold, p= 0.0476).
Conclusion:
Hyaluronan is elevated following MI and can influence macrophage function. Because of the accumulation of hyaluronan and macrophages in the post-MI heart, macrophage-hyaluronan interactions may be a nexus regulating ventricular remodeling.
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20
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Abouleisa R, Ou Q, Jacobson Z, Tang XL, Hindi SM, Kumar A, Ivey KN, Giridharan G, Al-Baz A, Brittian K, Rood B, Hill BG, Jones SP, Bolli R, Mohamed TM. Abstract 208: Reliable Biomimetic Culture System for Pig and Human Heart Slices. Circ Res 2019. [DOI: 10.1161/res.125.suppl_1.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
Heart failure is the number one killer and drug induced cardiotoxicity is a major cause of market withdrawal. The lack of availability of culture systems for human heart tissue that is functionally and structurally viable for more than 24 hours is a limiting factor in validation of novel heart failure therapies as well as reliable cardiotoxicity testing. Therefore, there is an urgent need to develop a reliable system for culturing human heart tissue for testing drug efficacy and toxicity.
Objective:
To develop a reliable method to culture pig and human heart slices under full physiological conditions for a period of time sufficient to test therapeutic efficacy and acute drug toxicity.
Methods and Results:
Here we describe a novel biomimetic culture system that maintains full viability and functionality of human and pig heart slices (300 μm thickness) for 6 days in culture through optimization of the medium and culture conditions with continuous electrical stimulation at 1.2 Hz and oxygenation of the medium. Functional viability of these slices over 6 days was confirmed by assessing their calcium homeostasis, twitch force generation, and response to β-adrenergic stimulation. Temporal transcriptome analysis using RNAseq at day 2, 6, and 10 in culture confirmed overall maintenance of normal gene expression for up to 6 days, while over 500 transcripts were differentially regulated after 10 days. Electron microscopy demonstrated intact mitochondria and Z-disc ultra-structures after 6 days in culture under our optimized conditions. This biomimetic culture system was successful in keeping human heart slices completely viable and functionally and structurally intact for 6 days in culture. We also used this system to demonstrate the effects of a novel gene therapy approach in human heart slices.
Conclusions:
We have developed and optimized a reliable and easily reproducible culture system for pig and human heart slices as a platform for testing the efficacy of novel heart failure therapeutics as well as reliable testing of cardiotoxicity in a 3D heart model.
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21
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Ou Q, Jacobson Z, Abouleisa RRE, Tang XL, Hindi SM, Kumar A, Ivey KN, Giridharan G, El-Baz A, Brittian K, Rood B, Lin YH, Watson SA, Perbellini F, McKinsey TA, Hill BG, Jones SP, Terracciano CM, Bolli R, Mohamed TMA. Physiological Biomimetic Culture System for Pig and Human Heart Slices. Circ Res 2019; 125:628-642. [PMID: 31310161 DOI: 10.1161/circresaha.119.314996] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
RATIONALE Preclinical testing of cardiotoxicity and efficacy of novel heart failure therapies faces a major limitation: the lack of an in situ culture system that emulates the complexity of human heart tissue and maintains viability and functionality for a prolonged time. OBJECTIVE To develop a reliable, easily reproducible, medium-throughput method to culture pig and human heart slices under physiological conditions for a prolonged period of time. METHODS AND RESULTS Here, we describe a novel, medium-throughput biomimetic culture system that maintains viability and functionality of human and pig heart slices (300 µm thickness) for 6 days in culture. We optimized the medium and culture conditions with continuous electrical stimulation at 1.2 Hz and oxygenation of the medium. Functional viability of these slices over 6 days was confirmed by assessing their calcium homeostasis, twitch force generation, and response to β-adrenergic stimulation. Temporal transcriptome analysis using RNAseq at day 2, 6, and 10 in culture confirmed overall maintenance of normal gene expression for up to 6 days, while over 500 transcripts were differentially regulated after 10 days. Electron microscopy demonstrated intact mitochondria and Z-disc ultra-structures after 6 days in culture under our optimized conditions. This biomimetic culture system was successful in keeping human heart slices completely viable and functionally and structurally intact for 6 days in culture. We also used this system to demonstrate the effects of a novel gene therapy approach in human heart slices. Furthermore, this culture system enabled the assessment of contraction and relaxation kinetics on isolated single myofibrils from heart slices after culture. CONCLUSIONS We have developed and optimized a reliable medium-throughput culture system for pig and human heart slices as a platform for testing the efficacy of novel heart failure therapeutics and reliable testing of cardiotoxicity in a 3-dimensional heart model.
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Affiliation(s)
- Qinghui Ou
- From the Department of Medicine, Institute of Molecular Cardiology (Q.O., R.R.E.A., X.-L.T., K.B., S.P.J., R.B., T.M.A.M.), University of Louisville, KY
| | - Zoë Jacobson
- Tenaya Therapeutics, South San Francisco, CA (Z.J., K.N.I.)
| | - Riham R E Abouleisa
- From the Department of Medicine, Institute of Molecular Cardiology (Q.O., R.R.E.A., X.-L.T., K.B., S.P.J., R.B., T.M.A.M.), University of Louisville, KY
| | - Xian-Liang Tang
- From the Department of Medicine, Institute of Molecular Cardiology (Q.O., R.R.E.A., X.-L.T., K.B., S.P.J., R.B., T.M.A.M.), University of Louisville, KY
| | - Sajedah M Hindi
- Departments of Anatomical Sciences and Neurobiology (S.M.H., A.K.), University of Louisville, KY
| | - Ashok Kumar
- Departments of Anatomical Sciences and Neurobiology (S.M.H., A.K.), University of Louisville, KY
| | - Kathryn N Ivey
- Tenaya Therapeutics, South San Francisco, CA (Z.J., K.N.I.)
| | | | - Ayman El-Baz
- Department of Bioengineering (G.G., A.E.-B.), University of Louisville, KY
| | - Kenneth Brittian
- From the Department of Medicine, Institute of Molecular Cardiology (Q.O., R.R.E.A., X.-L.T., K.B., S.P.J., R.B., T.M.A.M.), University of Louisville, KY
| | - Benjamin Rood
- Envirome Institute, Diabetes and Obesity Center, Department of Medicine (B.R., B.G.H., S.P.J., T.M.A.M.), University of Louisville, KY
| | - Ying-Hsi Lin
- Division of Cardiology and Consortium for Fibrosis Research & Translation, Department of Medicine, University of Colorado, Aurora (Y.-H.L., T.A.M.)
| | - Samuel A Watson
- National Heart & Lung Institute, Imperial College London, United Kingdom (S.A.W., F.P., C.M.T.)
| | - Filippo Perbellini
- National Heart & Lung Institute, Imperial College London, United Kingdom (S.A.W., F.P., C.M.T.).,Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, Germany (F.P.)
| | - Timothy A McKinsey
- Division of Cardiology and Consortium for Fibrosis Research & Translation, Department of Medicine, University of Colorado, Aurora (Y.-H.L., T.A.M.)
| | - Bradford G Hill
- Envirome Institute, Diabetes and Obesity Center, Department of Medicine (B.R., B.G.H., S.P.J., T.M.A.M.), University of Louisville, KY
| | - Steven P Jones
- From the Department of Medicine, Institute of Molecular Cardiology (Q.O., R.R.E.A., X.-L.T., K.B., S.P.J., R.B., T.M.A.M.), University of Louisville, KY.,Envirome Institute, Diabetes and Obesity Center, Department of Medicine (B.R., B.G.H., S.P.J., T.M.A.M.), University of Louisville, KY
| | - Cesare M Terracciano
- National Heart & Lung Institute, Imperial College London, United Kingdom (S.A.W., F.P., C.M.T.)
| | - Roberto Bolli
- From the Department of Medicine, Institute of Molecular Cardiology (Q.O., R.R.E.A., X.-L.T., K.B., S.P.J., R.B., T.M.A.M.), University of Louisville, KY
| | - Tamer M A Mohamed
- From the Department of Medicine, Institute of Molecular Cardiology (Q.O., R.R.E.A., X.-L.T., K.B., S.P.J., R.B., T.M.A.M.), University of Louisville, KY.,Envirome Institute, Diabetes and Obesity Center, Department of Medicine (B.R., B.G.H., S.P.J., T.M.A.M.), University of Louisville, KY.,Department of Pharmacology and Toxicology (T.M.A.M.), University of Louisville, KY.,Institute of Cardiovascular Sciences, University of Manchester, United Kingdom (T.M.A.M.).,Faculty of Pharmacy, Zagazig University, Egypt (T.M.A.M.)
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22
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Friedl RM, Raja S, Metzler MA, Patel ND, Brittian KR, Jones SP, Sandell LL. RDH10 function is necessary for spontaneous fetal mouth movement that facilitates palate shelf elevation. Dis Model Mech 2019; 12:12/7/dmm039073. [PMID: 31300413 PMCID: PMC6679383 DOI: 10.1242/dmm.039073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 06/06/2019] [Indexed: 12/15/2022] Open
Abstract
Cleft palate is a common birth defect, occurring in approximately 1 in 1000 live births worldwide. Known etiological mechanisms of cleft palate include defects within developing palate shelf tissues, defects in mandibular growth and defects in spontaneous fetal mouth movement. Until now, experimental studies directly documenting fetal mouth immobility as an underlying cause of cleft palate have been limited to models lacking neurotransmission. This study extends the range of anomalies directly demonstrated to have fetal mouth movement defects correlated with cleft palate. Here, we show that mouse embryos deficient in retinoic acid (RA) have mispatterned pharyngeal nerves and skeletal elements that block spontaneous fetal mouth movement in utero. Using X-ray microtomography, in utero ultrasound video, ex vivo culture and tissue staining, we demonstrate that proper retinoid signaling and pharyngeal patterning are crucial for the fetal mouth movement needed for palate formation. Embryos with deficient retinoid signaling were generated by stage-specific inactivation of retinol dehydrogenase 10 (Rdh10), a gene crucial for the production of RA during embryogenesis. The finding that cleft palate in retinoid deficiency results from a lack of fetal mouth movement might help elucidate cleft palate etiology and improve early diagnosis in human disorders involving defects of pharyngeal development. Summary: Fetal mouth immobility and defects in pharyngeal patterning underlie cleft palate in retinoid-deficient Rdh10 mutant mouse embryos.
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Affiliation(s)
- Regina M Friedl
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Swetha Raja
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Melissa A Metzler
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Niti D Patel
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
| | - Kenneth R Brittian
- Department of Medicine, Diabetes and Obesity Center, University of Louisville, Louisville, KY 40202, USA
| | - Steven P Jones
- Department of Medicine, Diabetes and Obesity Center, University of Louisville, Louisville, KY 40202, USA
| | - Lisa L Sandell
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY 40202, USA
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23
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Affiliation(s)
- Shizuka Uchida
- From the Cardiovascular Innovation Institute (S.U.) and Institute of Molecular Cardiology, Diabetes and Obesity Center, Division of Cardiovascular Medicine, Department of Medicine (S.P.J.), University of Louisville, KY.
| | - Steven P Jones
- From the Cardiovascular Innovation Institute (S.U.) and Institute of Molecular Cardiology, Diabetes and Obesity Center, Division of Cardiovascular Medicine, Department of Medicine (S.P.J.), University of Louisville, KY
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24
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Dassanayaka S, Brittian KR, Jurkovic A, Higgins LA, Audam TN, Long BW, Harrison LT, Militello G, Riggs DW, Chitre MG, Uchida S, Muthusamy S, Gumpert AM, Jones SP. E2f1 deletion attenuates infarct-induced ventricular remodeling without affecting O-GlcNAcylation. Basic Res Cardiol 2019; 114:28. [PMID: 31152247 DOI: 10.1007/s00395-019-0737-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 05/20/2019] [Indexed: 01/05/2023]
Abstract
Several post-translational modifications figure prominently in ventricular remodeling. The beta-O-linkage of N-acetylglucosamine (O-GlcNAc) to proteins has emerged as an important signal in the cardiovascular system. Although there are limited insights about the regulation of the biosynthetic pathway that gives rise to the O-GlcNAc post-translational modification, much remains to be elucidated regarding the enzymes, such as O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA), which regulate the presence/absence of O-GlcNAcylation. Recently, we showed that the transcription factor, E2F1, could negatively regulate OGT and OGA expression in vitro. The present study sought to determine whether E2f1 deletion would improve post-infarct ventricular function by de-repressing expression of OGT and OGA. Male and female mice were subjected to non-reperfused myocardial infarction (MI) and followed for 1 or 4 week. MI significantly increased E2F1 expression. Deletion of E2f1 alone was not sufficient to alter OGT or OGA expression in a naïve setting. Cardiac dysfunction was significantly attenuated at 1-week post-MI in E2f1-ablated mice. During chronic heart failure, E2f1 deletion also attenuated cardiac dysfunction. Despite the improvement in function, OGT and OGA expression was not normalized and protein O-GlcNAcyltion was not changed at 1-week post-MI. OGA expression was significantly upregulated at 4-week post-MI but overall protein O-GlcNAcylation was not changed. As an alternative explanation, we also performed guided transcriptional profiling of predicted targets of E2F1, which indicated potential differences in cardiac metabolism, angiogenesis, and apoptosis. E2f1 ablation increased heart size and preserved remote zone capillary density at 1-week post-MI. During chronic heart failure, cardiomyocytes in the remote zone of E2f1-deleted hearts were larger than wildtype. These data indicate that, overall, E2f1 exerts a deleterious effect on ventricular remodeling. Thus, E2f1 deletion improves ventricular remodeling with limited impact on enzymes regulating O-GlcNAcylation.
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Affiliation(s)
- Sujith Dassanayaka
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Kenneth R Brittian
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Andrea Jurkovic
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Lauren A Higgins
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Timothy N Audam
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Bethany W Long
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Linda T Harrison
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Giuseppe Militello
- Division of Cardiovascular Medicine, Department of Medicine, Cardiovascular Innovation Institute, University of Louisville, Louisville, KY, USA
| | - Daniel W Riggs
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Mitali G Chitre
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Shizuka Uchida
- Division of Cardiovascular Medicine, Department of Medicine, Cardiovascular Innovation Institute, University of Louisville, Louisville, KY, USA
| | - Senthilkumar Muthusamy
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Anna M Gumpert
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA
| | - Steven P Jones
- Division of Cardiovascular Medicine, Department of Medicine, Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville, 580 South Preston Street-321F, Delia Baxter Building-321F, Louisville, KY, 40202, USA.
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25
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Affiliation(s)
- Steven P Jones
- From the Department of Medicine-Cardiovascular, University of Louisville, KY.
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26
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Jones SP, Kerner M, Luisoni G. Next-to-Leading-Order QCD Corrections to Higgs Boson Plus Jet Production with Full Top-Quark Mass Dependence. Phys Rev Lett 2018; 120:162001. [PMID: 29756904 DOI: 10.1103/physrevlett.120.162001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 06/08/2023]
Abstract
We present the next-to-leading-order QCD corrections to the production of a Higgs boson in association with one jet at the LHC including the full top-quark mass dependence. The mass of the bottom quark is neglected. The two-loop integrals appearing in the virtual contribution are calculated numerically using the method of sector decomposition. We study the Higgs boson transverse momentum distribution, focusing on the high p_{t,H} region, where the top-quark loop is resolved. We find that the next-to-leading-order QCD corrections are large but that the ratio of the next-to-leading-order to leading-order result is similar to that obtained by computing in the limit of large top-quark mass.
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Affiliation(s)
- S P Jones
- Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München, Germany
| | - M Kerner
- Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München, Germany
| | - G Luisoni
- Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München, Germany
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27
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Baba SP, Zhang D, Singh M, Dassanayaka S, Xie Z, Jagatheesan G, Zhao J, Schmidtke VK, Brittian KR, Merchant ML, Conklin DJ, Jones SP, Bhatnagar A. Deficiency of aldose reductase exacerbates early pressure overload-induced cardiac dysfunction and autophagy in mice. J Mol Cell Cardiol 2018; 118:183-192. [PMID: 29627295 DOI: 10.1016/j.yjmcc.2018.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 03/29/2018] [Accepted: 04/03/2018] [Indexed: 12/21/2022]
Abstract
Pathological cardiac hypertrophy is associated with the accumulation of lipid peroxidation-derived aldehydes such as 4-hydroxy-trans-2-nonenal (HNE) and acrolein in the heart. These aldehydes are metabolized via several pathways, of which aldose reductase (AR) represents a broad-specificity route for their elimination. We tested the hypothesis that by preventing aldehyde removal, AR deficiency accentuates the pathological effects of transverse aortic constriction (TAC). We found that the levels of AR in the heart were increased in mice subjected to TAC for 2 weeks. In comparison with wild-type (WT), AR-null mice showed lower ejection fraction, which was exacerbated 2 weeks after TAC. Levels of atrial natriuretic peptide and myosin heavy chain were higher in AR-null than in WT TAC hearts. Deficiency of AR decreased urinary levels of the acrolein metabolite, 3-hydroxypropylmercapturic acid. Deletion of AR did not affect the levels of the other aldehyde-metabolizing enzyme - aldehyde dehydrogenase 2 in the heart, or its urinary product - (N-Acetyl-S-(2-carboxyethyl)-l-cystiene). AR-null hearts subjected to TAC showed increased accumulation of HNE- and acrolein-modified proteins, as well as increased AMPK phosphorylation and autophagy. Superfusion with HNE led to a greater increase in p62, LC3II formation, and GFP-LC3-II punctae formation in AR-null than WT cardiac myocytes. Pharmacological inactivation of JNK decreased HNE-induced autophagy in AR-null cardiac myocytes. Collectively, these results suggest that during hypertrophy the accumulation of lipid peroxidation derived aldehydes promotes pathological remodeling via excessive autophagy, and that metabolic detoxification of these aldehydes by AR may be essential for maintaining cardiac function during early stages of pressure overload.
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Affiliation(s)
- Shahid P Baba
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States.
| | - Deqing Zhang
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Mahavir Singh
- Department of Physiology, University of Louisville, Louisville, KY, United States
| | - Sujith Dassanayaka
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Zhengzhi Xie
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Ganapathy Jagatheesan
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Jingjing Zhao
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Virginia K Schmidtke
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Kenneth R Brittian
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Michael L Merchant
- Divisions of Nephrology and Hypertension and the Institute of Molecular Cardiology, University of Louisville, Louisville, KY, United States
| | - Daniel J Conklin
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Steven P Jones
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
| | - Aruni Bhatnagar
- Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States
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28
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Hosen MR, Militello G, Weirick T, Ponomareva Y, Dassanayaka S, Moore JB, Döring C, Wysoczynski M, Jones SP, Dimmeler S, Uchida S. Airn Regulates Igf2bp2 Translation in Cardiomyocytes. Circ Res 2018; 122:1347-1353. [PMID: 29483092 DOI: 10.1161/circresaha.117.312215] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 02/19/2018] [Accepted: 02/23/2018] [Indexed: 11/16/2022]
Abstract
RATIONALE Increasing evidence indicates the presence of lncRNAs in various cell types. Airn is an imprinting gene transcribed from the paternal chromosome. It is in antisense orientation to the imprinted, but maternally derived, Igf2r gene, on which Airn exerts its regulation in cis. Although Airn is highly expressed in the heart, functions aside from imprinting remain unknown. OBJECTIVE Here, we studied the functions of Airn in the heart, especially cardiomyocytes. METHODS AND RESULTS Silencing of Airn via siRNAs augmented cell death, vulnerability to cellular stress, and reduced cell migration. To find the cause of such phenotypes, the potential binding partners of Airn were identified via RNA pull-down followed by mass spectrometry, which indicated Igf2bp2 (insulin-like growth factor 2 mRNA-binding protein 2) and Rpa1 (replication protein A1) as potential binding partners. Further experiments showed that Airn binds to Igf2bp2 to control the translation of several genes. Moreover, silencing of Airn caused less binding of Igf2bp2 to other mRNAs and reduced translation of Igf2bp2 protein. CONCLUSIONS Our study uncovers a new function of Airn and demonstrates that Airn is important for the physiology of cardiomyocytes.
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Affiliation(s)
- Mohammed Rabiul Hosen
- From the Institute of Cardiovascular Regeneration, Centre for Molecular Medicine (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,Department of Biosciences (M.R.H., G.M., T.W., Y.P.).,German Center for Cardiovascular Research, Partner side Rhein-Main, Frankfurt (M.R.H., G.M., T.W., Y.P., S.D., S.U.)
| | - Giuseppe Militello
- From the Institute of Cardiovascular Regeneration, Centre for Molecular Medicine (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,Department of Biosciences (M.R.H., G.M., T.W., Y.P.).,German Center for Cardiovascular Research, Partner side Rhein-Main, Frankfurt (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,Cardiovascular Innovation Institute (G.M., T.W., S.U.)
| | - Tyler Weirick
- From the Institute of Cardiovascular Regeneration, Centre for Molecular Medicine (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,Department of Biosciences (M.R.H., G.M., T.W., Y.P.).,German Center for Cardiovascular Research, Partner side Rhein-Main, Frankfurt (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,Cardiovascular Innovation Institute (G.M., T.W., S.U.)
| | - Yuliya Ponomareva
- From the Institute of Cardiovascular Regeneration, Centre for Molecular Medicine (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,Department of Biosciences (M.R.H., G.M., T.W., Y.P.).,German Center for Cardiovascular Research, Partner side Rhein-Main, Frankfurt (M.R.H., G.M., T.W., Y.P., S.D., S.U.)
| | - Sujith Dassanayaka
- From the Institute of Cardiovascular Regeneration, Centre for Molecular Medicine (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,German Center for Cardiovascular Research, Partner side Rhein-Main, Frankfurt (M.R.H., G.M., T.W., Y.P., S.D., S.U.)
| | - Joseph B Moore
- From the Institute of Cardiovascular Regeneration, Centre for Molecular Medicine (M.R.H., G.M., T.W., Y.P., S.D., S.U.).,Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center (S.D., J.B.M., M.W., S.P.J.), University of Louisville, KY
| | - Claudia Döring
- Dr Senckenberg Institute of Pathology, Goethe University Frankfurt, Germany (C.D.)
| | - Marcin Wysoczynski
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center (S.D., J.B.M., M.W., S.P.J.), University of Louisville, KY
| | - Steven P Jones
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center (S.D., J.B.M., M.W., S.P.J.), University of Louisville, KY
| | - Stefanie Dimmeler
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center (S.D., J.B.M., M.W., S.P.J.), University of Louisville, KY
| | - Shizuka Uchida
- German Center for Cardiovascular Research, Partner side Rhein-Main, Frankfurt (M.R.H., G.M., T.W., Y.P., S.D., S.U.) .,Cardiovascular Innovation Institute (G.M., T.W., S.U.)
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29
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Lindsey ML, Bolli R, Canty JM, Du XJ, Frangogiannis NG, Frantz S, Gourdie RG, Holmes JW, Jones SP, Kloner RA, Lefer DJ, Liao R, Murphy E, Ping P, Przyklenk K, Recchia FA, Schwartz Longacre L, Ripplinger CM, Van Eyk JE, Heusch G. Guidelines for experimental models of myocardial ischemia and infarction. Am J Physiol Heart Circ Physiol 2018; 314:H812-H838. [PMID: 29351451 PMCID: PMC5966768 DOI: 10.1152/ajpheart.00335.2017] [Citation(s) in RCA: 322] [Impact Index Per Article: 53.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Myocardial infarction is a prevalent major cardiovascular event that arises from myocardial ischemia with or without reperfusion, and basic and translational research is needed to better understand its underlying mechanisms and consequences for cardiac structure and function. Ischemia underlies a broad range of clinical scenarios ranging from angina to hibernation to permanent occlusion, and while reperfusion is mandatory for salvage from ischemic injury, reperfusion also inflicts injury on its own. In this consensus statement, we present recommendations for animal models of myocardial ischemia and infarction. With increasing awareness of the need for rigor and reproducibility in designing and performing scientific research to ensure validation of results, the goal of this review is to provide best practice information regarding myocardial ischemia-reperfusion and infarction models. Listen to this article’s corresponding podcast at ajpheart.podbean.com/e/guidelines-for-experimental-models-of-myocardial-ischemia-and-infarction/.
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Affiliation(s)
- Merry L Lindsey
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Research Service, G. V. (Sonny) Montgomery Veterans Affairs Medical Center , Jackson, Mississippi
| | - Roberto Bolli
- Division of Cardiovascular Medicine and Institute of Molecular Cardiology, University of Louisville , Louisville, Kentucky
| | - John M Canty
- Division of Cardiovascular Medicine, Departments of Biomedical Engineering and Physiology and Biophysics, The Veterans Affairs Western New York Health Care System and Clinical and Translational Science Institute, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo , Buffalo, New York
| | - Xiao-Jun Du
- Baker Heart and Diabetes Institute , Melbourne, Victoria , Australia
| | - Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, New York
| | - Stefan Frantz
- Department of Internal Medicine I, University Hospital , Würzburg , Germany
| | - Robert G Gourdie
- Center for Heart and Regenerative Medicine Research, Virginia Tech Carilion Research Institute , Roanoke, Virginia
| | - Jeffrey W Holmes
- Department of Biomedical Engineering, University of Virginia Health System , Charlottesville, Virginia
| | - Steven P Jones
- Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville , Louisville, Kentucky
| | - Robert A Kloner
- HMRI Cardiovascular Research Institute, Huntington Medical Research Institutes , Pasadena, California.,Division of Cardiovascular Medicine, Keck School of Medicine, University of Southern California , Los Angeles, California
| | - David J Lefer
- Cardiovascular Center of Excellence, Louisiana State University Health Science Center , New Orleans, Louisiana
| | - Ronglih Liao
- Harvard Medical School , Boston, Massachusetts.,Division of Genetics and Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital , Boston, Massachusetts
| | - Elizabeth Murphy
- Systems Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland
| | - Peipei Ping
- National Institutes of Health BD2KBig Data to Knowledge (BD2K) Center of Excellence and Department of Physiology, Medicine and Bioinformatics, University of California , Los Angeles, California
| | - Karin Przyklenk
- Cardiovascular Research Institute and Departments of Physiology and Emergency Medicine, Wayne State University School of Medicine , Detroit, Michigan
| | - Fabio A Recchia
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Fondazione G. Monasterio, Pisa , Italy.,Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University , Philadelphia, Pennsylvania
| | - Lisa Schwartz Longacre
- Heart Failure and Arrhythmias Branch, Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, National Institutes of Health , Bethesda, Maryland
| | - Crystal M Ripplinger
- Department of Pharmacology, School of Medicine, University of California , Davis, California
| | - Jennifer E Van Eyk
- The Smidt Heart Institute, Department of Medicine, Cedars Sinai Medical Center , Los Angeles, California
| | - Gerd Heusch
- Institute for Pathophysiology, West German Heart and Vascular Center, University of Essen Medical School , Essen , Germany
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30
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Gibb AA, Epstein PN, Uchida S, Zheng Y, McNally LA, Obal D, Katragadda K, Trainor P, Conklin DJ, Brittian KR, Tseng MT, Wang J, Jones SP, Bhatnagar A, Hill BG. Exercise-Induced Changes in Glucose Metabolism Promote Physiological Cardiac Growth. Circulation 2017; 136:2144-2157. [PMID: 28860122 PMCID: PMC5704654 DOI: 10.1161/circulationaha.117.028274] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 08/25/2017] [Indexed: 12/15/2022]
Abstract
Supplemental Digital Content is available in the text. Background: Exercise promotes metabolic remodeling in the heart, which is associated with physiological cardiac growth; however, it is not known whether or how physical activity–induced changes in cardiac metabolism cause myocardial remodeling. In this study, we tested whether exercise-mediated changes in cardiomyocyte glucose metabolism are important for physiological cardiac growth. Methods: We used radiometric, immunologic, metabolomic, and biochemical assays to measure changes in myocardial glucose metabolism in mice subjected to acute and chronic treadmill exercise. To assess the relevance of changes in glycolytic activity, we determined how cardiac-specific expression of mutant forms of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase affect cardiac structure, function, metabolism, and gene programs relevant to cardiac remodeling. Metabolomic and transcriptomic screenings were used to identify metabolic pathways and gene sets regulated by glycolytic activity in the heart. Results: Exercise acutely decreased glucose utilization via glycolysis by modulating circulating substrates and reducing phosphofructokinase activity; however, in the recovered state following exercise adaptation, there was an increase in myocardial phosphofructokinase activity and glycolysis. In mice, cardiac-specific expression of a kinase-deficient 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase transgene (GlycoLo mice) lowered glycolytic rate and regulated the expression of genes known to promote cardiac growth. Hearts of GlycoLo mice had larger myocytes, enhanced cardiac function, and higher capillary-to-myocyte ratios. Expression of phosphatase-deficient 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase in the heart (GlycoHi mice) increased glucose utilization and promoted a more pathological form of hypertrophy devoid of transcriptional activation of the physiological cardiac growth program. Modulation of phosphofructokinase activity was sufficient to regulate the glucose–fatty acid cycle in the heart; however, metabolic inflexibility caused by invariantly low or high phosphofructokinase activity caused modest mitochondrial damage. Transcriptomic analyses showed that glycolysis regulates the expression of key genes involved in cardiac metabolism and remodeling. Conclusions: Exercise-induced decreases in glycolytic activity stimulate physiological cardiac remodeling, and metabolic flexibility is important for maintaining mitochondrial health in the heart.
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Affiliation(s)
- Andrew A Gibb
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Department of Physiology (A.A.G., B.G.H.)
| | | | | | - Yuting Zheng
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | - Lindsey A McNally
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | - Detlef Obal
- Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Department of Anesthesiology (D.O.)
| | - Kartik Katragadda
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | - Patrick Trainor
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | - Daniel J Conklin
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | - Kenneth R Brittian
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | | | - Jianxun Wang
- University of Louisville, KY. Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (J.W.)
| | - Steven P Jones
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | - Aruni Bhatnagar
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.)
| | - Bradford G Hill
- Institute of Molecular Cardiology (A.A.G., Y.Z., L.A.M., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.) .,Diabetes and Obesity Center (A.A.G., Y.Z., L.A.M., D.O., K.K., P.T., D.J.C., K.R.B., S.P.J., A.B., B.G.H.).,Department of Physiology (A.A.G., B.G.H.)
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31
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Zucker IH, Lindsey ML, Delmar M, De Windt LJ, Des Rosiers C, Diz DI, Hester RL, Jones SP, Kanagy NL, Kitakaze M, Liao R, Lopaschuk GD, Patel KP, Recchia FA, Sadoshima J, Shah AM, Ungvari Z, Benjamin IJ, Blaustein MP, Charkoudian N, Efimov IR, Gutterman D, Kass DA, Liao Y, O'Leary DS, Ripplinger CM, Wolin MS. Why publish in the American Journal of Physiology-Heart and Circulatory Physiology? Am J Physiol Heart Circ Physiol 2017. [PMID: 28626081 DOI: 10.1152/ajpheart.00329.2017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Merry L Lindsey
- University of Mississippi Medical Center and G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, Mississippi
| | | | - Leon J De Windt
- Cardiovascular Research Institute Maastricht, Maastricht, The Netherlands
| | | | - Debra I Diz
- Hypertension and Vascular Research, Cardiovascular Sciences Center, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Robert L Hester
- University of Mississippi Medical Center, Jackson, Mississippi
| | | | - Nancy L Kanagy
- University of New Mexico School of Medicine, Albuquerque, New Mexico
| | | | - Ronglih Liao
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | | | | | - Fabio A Recchia
- Temple University Lewis Katz School of Medicine, Philadelphia, Pennslyvania, and Scuola Superiore Sant'Anna, Pisa, Italy
| | | | - Ajay M Shah
- King's College London British Heart Foundation Centre of Excellence, London, United Kingdom
| | - Zoltan Ungvari
- Reynolds Oklahoma Center on Aging, University of Oklahoma, Oklahoma City, Oklahoma
| | | | | | - Nisha Charkoudian
- United States Army Research Institute of Environmental Medicine, Natick, Massachusetts
| | - Igor R Efimov
- George Washington University, Washington, District of Columbia
| | - David Gutterman
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - David A Kass
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - Yulin Liao
- Southern Medical University, Guangzhou, China
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32
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Dassanayaka S, Brainard RE, Watson LJ, Long BW, Brittian KR, DeMartino AM, Aird AL, Gumpert AM, Audam TN, Kilfoil PJ, Muthusamy S, Hamid T, Prabhu SD, Jones SP. Cardiomyocyte Ogt limits ventricular dysfunction in mice following pressure overload without affecting hypertrophy. Basic Res Cardiol 2017; 112:23. [PMID: 28299467 PMCID: PMC5555162 DOI: 10.1007/s00395-017-0612-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/08/2017] [Indexed: 10/20/2022]
Abstract
The myocardial response to pressure overload involves coordination of multiple transcriptional, posttranscriptional, and metabolic cues. The previous studies show that one such metabolic cue, O-GlcNAc, is elevated in the pressure-overloaded heart, and the increase in O-GlcNAcylation is required for cardiomyocyte hypertrophy in vitro. Yet, it is not clear whether and how O-GlcNAcylation participates in the hypertrophic response in vivo. Here, we addressed this question using patient samples and a preclinical model of heart failure. Protein O-GlcNAcylation levels were increased in myocardial tissue from heart failure patients compared with normal patients. To test the role of OGT in the heart, we subjected cardiomyocyte-specific, inducibly deficient Ogt (i-cmOgt -/-) mice and Ogt competent littermate wild-type (WT) mice to transverse aortic constriction. Deletion of cardiomyocyte Ogt significantly decreased O-GlcNAcylation and exacerbated ventricular dysfunction, without producing widespread changes in metabolic transcripts. Although some changes in hypertrophic and fibrotic signaling were noted, there were no histological differences in hypertrophy or fibrosis. We next determined whether significant differences were present in i-cmOgt -/- cardiomyocytes from surgically naïve mice. Interestingly, markers of cardiomyocyte dedifferentiation were elevated in Ogt-deficient cardiomyocytes. Although no significant differences in cardiac dysfunction were apparent after recombination, it is possible that such changes in dedifferentiation markers could reflect a larger phenotypic shift within the Ogt-deficient cardiomyocytes. We conclude that cardiomyocyte Ogt is not required for cardiomyocyte hypertrophy in vivo; however, loss of Ogt may exert subtle phenotypic differences in cardiomyocytes that sensitize the heart to pressure overload-induced ventricular dysfunction.
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Affiliation(s)
- Sujith Dassanayaka
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Robert E Brainard
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Lewis J Watson
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA.,Kentucky College of Osteopathic Medicine, University of Pikeville, Pikeville, KY, USA
| | - Bethany W Long
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Kenneth R Brittian
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Angelica M DeMartino
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Allison L Aird
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Anna M Gumpert
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Timothy N Audam
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Peter J Kilfoil
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Senthilkumar Muthusamy
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA
| | - Tariq Hamid
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA.,Division of Cardiovascular Disease and Comprehensive Cardiovascular Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Sumanth D Prabhu
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA.,Division of Cardiovascular Disease and Comprehensive Cardiovascular Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Steven P Jones
- Division of Cardiovascular Medicine, Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, 580 South Preston Street, Louisville, KY, 40202, USA.
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33
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Kingery JR, Hamid T, Lewis RK, Ismahil MA, Bansal SS, Rokosh G, Townes TM, Ildstad ST, Jones SP, Prabhu SD. Leukocyte iNOS is required for inflammation and pathological remodeling in ischemic heart failure. Basic Res Cardiol 2017; 112:19. [PMID: 28238121 DOI: 10.1007/s00395-017-0609-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 02/23/2017] [Indexed: 12/18/2022]
Abstract
In the failing heart, iNOS is expressed by both macrophages and cardiomyocytes. We hypothesized that inflammatory cell-localized iNOS exacerbates left ventricular (LV) remodeling. Wild-type (WT) C57BL/6 mice underwent total body irradiation and reconstitution with bone marrow from iNOS-/- mice (iNOS-/-c) or WT mice (WTc). Chimeric mice underwent coronary ligation to induce large infarction and ischemic heart failure (HF), or sham surgery. After 28 days, as compared with WTc sham mice, WTc HF mice exhibited significant (p < 0.05) mortality, LV dysfunction, hypertrophy, fibrosis, oxidative/nitrative stress, inflammatory activation, and iNOS upregulation. These mice also exhibited a ~twofold increase in circulating Ly6Chi pro-inflammatory monocytes, and ~sevenfold higher cardiac M1 macrophages, which were primarily CCR2- cells. In contrast, as compared with WTc HF mice, iNOS-/-c HF mice exhibited significantly improved survival, LV function, hypertrophy, fibrosis, oxidative/nitrative stress, and inflammatory activation, without differences in overall cardiac iNOS expression. Moreover, iNOS-/-c HF mice exhibited lower circulating Ly6Chi monocytes, and augmented cardiac M2 macrophages, but with greater infiltrating monocyte-derived CCR2+ macrophages vs. WTc HF mice. Lastly, upon cell-to-cell contact with naïve cardiomyocytes, peritoneal macrophages from WT HF mice depressed contraction, and augmented cardiomyocyte oxygen free radicals and peroxynitrite. These effects were not observed upon contact with macrophages from iNOS-/- HF mice. We conclude that leukocyte iNOS is obligatory for local and systemic inflammatory activation and cardiac remodeling in ischemic HF. Activated macrophages in HF may directly induce cardiomyocyte contractile dysfunction and oxidant stress upon cell-to-cell contact; this juxtacrine response requires macrophage-localized iNOS.
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Affiliation(s)
- Justin R Kingery
- Department of Medicine, University of Louisville, Louisville, KY, USA.,Department of Medicine, Weill Cornell Medical College, New York, NY, USA
| | - Tariq Hamid
- Department of Medicine, University of Louisville, Louisville, KY, USA.,Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, and Birmingham VAMC, Birmingham, AL, USA
| | - Robert K Lewis
- Department of Medicine, University of Louisville, Louisville, KY, USA.,Department of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Mohamed Ameen Ismahil
- Department of Medicine, University of Louisville, Louisville, KY, USA.,Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, and Birmingham VAMC, Birmingham, AL, USA
| | - Shyam S Bansal
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, and Birmingham VAMC, Birmingham, AL, USA
| | - Gregg Rokosh
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, and Birmingham VAMC, Birmingham, AL, USA
| | - Tim M Townes
- Department of Biochemistry & Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Suzanne T Ildstad
- Department of Surgery, University of Louisville, Louisville, KY, USA
| | - Steven P Jones
- Department of Medicine, University of Louisville, Louisville, KY, USA
| | - Sumanth D Prabhu
- Department of Medicine, University of Louisville, Louisville, KY, USA. .,Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham, and Birmingham VAMC, Birmingham, AL, USA.
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34
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Hamid T, Xu Y, Ismahil MA, Li Q, Jones SP, Bhatnagar A, Bolli R, Prabhu SD. TNF receptor signaling inhibits cardiomyogenic differentiation of cardiac stem cells and promotes a neuroadrenergic-like fate. Am J Physiol Heart Circ Physiol 2016; 311:H1189-H1201. [PMID: 27591224 DOI: 10.1152/ajpheart.00904.2015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 08/25/2016] [Indexed: 01/23/2023]
Abstract
Despite expansion of resident cardiac stem cells (CSCs; c-kit+Lin-) after myocardial infarction, endogenous repair processes are insufficient to prevent adverse cardiac remodeling and heart failure (HF). This suggests that the microenvironment in post-ischemic and failing hearts compromises CSC regenerative potential. Inflammatory cytokines, such as tumor necrosis factor-α (TNF), are increased after infarction and in HF; whether they modulate CSC function is unknown. As the effects of TNF are specific to its two receptors (TNFRs), we tested the hypothesis that TNF differentially modulates CSC function in a TNFR-specific manner. CSCs were isolated from wild-type (WT), TNFR1-/-, and TNFR2-/- adult mouse hearts, expanded and evaluated for cell competence and differentiation in vitro in the absence and presence of TNF. Our results indicate that TNF signaling in murine CSCs is constitutively related primarily to TNFR1, with TNFR2 inducible after stress. TNFR1 signaling modestly diminished CSC proliferation, but, along with TNFR2, augmented CSC resistance to oxidant stress. Deficiency of either TNFR1 or TNFR2 did not impact CSC telomerase activity. Importantly, TNF, primarily via TNFR1, inhibited cardiomyogenic commitment during CSC differentiation, and instead promoted smooth muscle and endothelial fates. Moreover, TNF, via both TNFR1 and TNFR2, channeled an alternate CSC neuroadrenergic-like fate (capable of catecholamine synthesis) during differentiation. Our results suggest that elevated TNF in the heart restrains cardiomyocyte differentiation of resident CSCs and may enhance adrenergic activation, both effects that would reduce the effectiveness of endogenous cardiac repair and the response to exogenous stem cell therapy, while promoting adverse cardiac remodeling.
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Affiliation(s)
- Tariq Hamid
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham and Birmingham Veterans Affairs Medical Center, Birmingham, Alabama; and
| | - Yuanyuan Xu
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham and Birmingham Veterans Affairs Medical Center, Birmingham, Alabama; and
| | - Mohamed Ameen Ismahil
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham and Birmingham Veterans Affairs Medical Center, Birmingham, Alabama; and
| | - Qianhong Li
- Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
| | - Steven P Jones
- Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
| | - Aruni Bhatnagar
- Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
| | - Roberto Bolli
- Department of Medicine, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky
| | - Sumanth D Prabhu
- Division of Cardiovascular Disease, Department of Medicine, University of Alabama at Birmingham and Birmingham Veterans Affairs Medical Center, Birmingham, Alabama; and
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35
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Borowka S, Greiner N, Heinrich G, Jones SP, Kerner M, Schlenk J, Schubert U, Zirke T. Erratum: Higgs Boson Pair Production in Gluon Fusion at Next-to-Leading Order with Full Top-Quark Mass Dependence [Phys. Rev. Lett. 117, 012001 (2016)]. Phys Rev Lett 2016; 117:079901. [PMID: 27564003 DOI: 10.1103/physrevlett.117.079901] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Indexed: 06/06/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.117.012001.
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36
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Wysoczynski M, Dassanayaka S, Zafir A, Ghafghazi S, Long BW, Noble C, DeMartino AM, Brittian KR, Bolli R, Jones SP. A New Method to Stabilize C-Kit Expression in Reparative Cardiac Mesenchymal Cells. Front Cell Dev Biol 2016; 4:78. [PMID: 27536657 PMCID: PMC4971111 DOI: 10.3389/fcell.2016.00078] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 07/13/2016] [Indexed: 11/13/2022] Open
Abstract
Cell therapy improves cardiac function. Few cells have been investigated more extensively or consistently shown to be more effective than c-kit sorted cells; however, c-kit expression is easily lost during passage. Here, our primary goal was to develop an improved method to isolate c-kit(pos) cells and maintain c-kit expression after passaging. Cardiac mesenchymal cells (CMCs) from wild-type mice were selected by polystyrene adherence properties. CMCs adhering within the first hours are referred to as rapidly adherent (RA); CMCs adhering subsequently are dubbed slowly adherent (SA). Both RA and SA CMCs were c-kit sorted. SA CMCs maintained significantly higher c-kit expression than RA cells; SA CMCs also had higher expression endothelial markers. We subsequently tested the relative efficacy of SA vs. RA CMCs in the setting of post-infarct adoptive transfer. Two days after coronary occlusion, vehicle, RA CMCs, or SA CMCs were delivered percutaneously with echocardiographic guidance. SA CMCs, but not RA CMCs, significantly improved cardiac function compared to vehicle treatment. Although the mechanism remains to be elucidated, the more pronounced endothelial phenotype of the SA CMCs coupled with the finding of increased vascular density suggest a potential pro-vasculogenic action. This new method of isolating CMCs better preserves c-kit expression during passage. SA CMCs, but not RA CMCs, were effective in reducing cardiac dysfunction. Although c-kit expression was maintained, it is unclear whether maintenance of c-kit expression per se was responsible for improved function, or whether the differential adherence property itself confers a reparative phenotype independently of c-kit.
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Affiliation(s)
- Marcin Wysoczynski
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Sujith Dassanayaka
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Ayesha Zafir
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Shahab Ghafghazi
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Bethany W Long
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Camille Noble
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Angelica M DeMartino
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Kenneth R Brittian
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Roberto Bolli
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
| | - Steven P Jones
- Institute of Molecular Cardiology, University of Louisville School of MedicineLouisville, KY, USA; Diabetes and Obesity Center, University of Louisville School of MedicineLouisville, KY, USA
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Dassanayaka S, Long BW, Zafir A, Ghafghazi S, Hunt GN, Noble CT, DeMartino AM, Brittian KR, Jones SP, Wysoczynski M. Abstract 25: A Streamlined Technique to Stabilize C-kit Expression in Cardiac Mesenchymal Cells. Circ Res 2016. [DOI: 10.1161/res.119.suppl_1.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Adoptive transfer of various reparative cells attenuates cardiac dysfunction in preclinical models of heart failure. Although c-kit sorted cells do not transdifferentiate to an extent sufficient to explain improvements in ventricular function, their adoptive transfer reliably attenuates cardiac dysfunction. Curiously, few studies report maintenance of c-kit expression with passage, and our experience indicates rapid dissipation of c-kit. Here, we asked whether we could stabilize c-kit expression during passage of c-kit sorted cells. To this end, we standardized an approach to isolate c-kit
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cardiac mesenchymal cells (CMCs) and to preserve c-kit expression over several passages (panel A). This protocol was predicated on the differential adhesion capacity of c-kit sorted CMCs, allowing their stratification into two groups: rapidly adhering (RA) and slowly adhering (SA). After characterization of these cells (panel B), we tested their reparative capacity using echo-guided, percutaneous intracavitary delivery in mice at two days following myocardial infarction (MI). SA, but not RA, CMCs significantly reduced scar area and improved ejection fraction (EF) compared to [cell-free] vehicle (panels C, D, and E). Examination of the post-MI hearts indicated augmented ischemic zone capillary formation in the SA group (panel F), consistent with potential neovascularization. In conclusion, we established a method to stabilize c-kit expression in a reparative subset of CMCs (i.e. SA CMCs). Our results, however, did not reconcile whether such maintenance of c-kit expression is required for the reparative function of the SA CMCs, which is the subject of future investigation.
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Borowka S, Greiner N, Heinrich G, Jones SP, Kerner M, Schlenk J, Schubert U, Zirke T. Higgs Boson Pair Production in Gluon Fusion at Next-to-Leading Order with Full Top-Quark Mass Dependence. Phys Rev Lett 2016; 117:012001. [PMID: 27419563 DOI: 10.1103/physrevlett.117.012001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Indexed: 06/06/2023]
Abstract
We present the calculation of the cross section and invariant mass distribution for Higgs boson pair production in gluon fusion at next-to-leading order (NLO) in QCD. Top-quark masses are fully taken into account throughout the calculation. The virtual two-loop amplitude has been generated using an extension of the program GoSam supplemented with an interface to Reduze for the integral reduction. The occurring integrals have been calculated numerically using the program SecDec. Our results, including the full top-quark mass dependence for the first time, allow us to assess the validity of various approximations proposed in the literature, which we also recalculate. We find substantial deviations between the NLO result and the different approximations, which emphasizes the importance of including the full top-quark mass dependence at NLO.
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Affiliation(s)
- S Borowka
- Institute for Physics, Universität Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland and Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA
| | - N Greiner
- Institute for Physics, Universität Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - G Heinrich
- Max Planck Institute for Physics, Föhringer Ring 6, 80805 München, Germany
| | - S P Jones
- Max Planck Institute for Physics, Föhringer Ring 6, 80805 München, Germany
| | - M Kerner
- Max Planck Institute for Physics, Föhringer Ring 6, 80805 München, Germany
| | - J Schlenk
- Max Planck Institute for Physics, Föhringer Ring 6, 80805 München, Germany
| | - U Schubert
- Max Planck Institute for Physics, Föhringer Ring 6, 80805 München, Germany
| | - T Zirke
- Max Planck Institute for Physics, Föhringer Ring 6, 80805 München, Germany
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Affiliation(s)
- Sujith Dassanayaka
- From the Division of Cardiovascular Medicine, Department of Medicine and Department of Physiology and Biophysics, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, KY
| | - Steven P Jones
- From the Division of Cardiovascular Medicine, Department of Medicine and Department of Physiology and Biophysics, Institute of Molecular Cardiology, Diabetes and Obesity Center, University of Louisville, KY.
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Zafir A, Bradley JA, Long BW, Muthusamy S, Li Q, Hill BG, Wysoczynski M, Prabhu SD, Bhatnagar A, Bolli R, Jones SP. O-GlcNAcylation Negatively Regulates Cardiomyogenic Fate in Adult Mouse Cardiac Mesenchymal Stromal Cells. PLoS One 2015; 10:e0142939. [PMID: 26565625 PMCID: PMC4643874 DOI: 10.1371/journal.pone.0142939] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/28/2015] [Indexed: 11/25/2022] Open
Abstract
In both preclinical and clinical studies, cell transplantation of several cell types is used to promote repair of damaged organs and tissues. Nevertheless, despite the widespread use of such strategies, there remains little understanding of how the efficacy of cell therapy is regulated. We showed previously that augmentation of a unique, metabolically derived stress signal (i.e., O-GlcNAc) improves survival of cardiac mesenchymal stromal cells; however, it is not known whether enhancing O-GlcNAcylation affects lineage commitment or other aspects of cell competency. In this study, we assessed the role of O-GlcNAc in differentiation of cardiac mesenchymal stromal cells. Exposure of these cells to routine differentiation protocols in culture increased markers of the cardiomyogenic lineage such as Nkx2.5 and connexin 40, and augmented the abundance of transcripts associated with endothelial and fibroblast cell fates. Differentiation significantly decreased the abundance of O-GlcNAcylated proteins. To determine if O-GlcNAc is involved in stromal cell differentiation, O-GlcNAcylation was increased pharmacologically during the differentiation protocol. Although elevated O-GlcNAc levels did not significantly affect fibroblast and endothelial marker expression, acquisition of cardiomyocyte markers was limited. In addition, increasing O-GlcNAcylation further elevated smooth muscle actin expression. In addition to lineage commitment, we also evaluated proliferation and migration, and found that increasing O-GlcNAcylation did not significantly affect either; however, we found that O-GlcNAc transferase--the protein responsible for adding O-GlcNAc to proteins--is at least partially required for maintaining cellular proliferative and migratory capacities. We conclude that O-GlcNAcylation contributes significantly to cardiac mesenchymal stromal cell lineage and function. O-GlcNAcylation and pathological conditions that may affect O-GlcNAc levels (such as diabetes) should be considered carefully in the context of cardiac cell therapy.
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Affiliation(s)
- Ayesha Zafir
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - James A. Bradley
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Bethany W. Long
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Senthilkumar Muthusamy
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Qianhong Li
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Bradford G. Hill
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Marcin Wysoczynski
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Sumanth D. Prabhu
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Aruni Bhatnagar
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Roberto Bolli
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Steven P. Jones
- Institute of Molecular Cardiology; Diabetes and Obesity Center, Department of Medicine, Division of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky, United States of America
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Muthusamy S, Hong KU, Dassanayaka S, Hamid T, Jones SP. E2F1 Transcription Factor Regulates O-linked N-acetylglucosamine (O-GlcNAc) Transferase and O-GlcNAcase Expression. J Biol Chem 2015; 290:31013-24. [PMID: 26527687 DOI: 10.1074/jbc.m115.677534] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Indexed: 11/06/2022] Open
Abstract
Protein O-GlcNAcylation, which is controlled by O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA), has emerged as an important posttranslational modification that may factor in multiple diseases. Until recently, it was assumed that OGT/OGA protein expression was relatively constant. Several groups, including ours, have shown that OGT and/or OGA expression changes in several pathologic contexts, yet the cis and trans elements that regulate the expression of these enzymes remain essentially unexplored. Here, we used a reporter-based assay to analyze minimal promoters and leveraged in silico modeling to nominate several candidate transcription factor binding sites in both Ogt (i.e. the gene for OGT protein) and Mgea5 (i.e. the gene for OGA protein). We noted multiple E2F binding site consensus sequences in both promoters. We performed chromatin immunoprecipitation in both human and mouse cells and found that E2F1 bound to candidate E2F binding sites in both promoters. In HEK293 cells, we overexpressed E2F1, which significantly reduced OGT and MGEA5 expression. Conversely, E2F1-deficient mouse fibroblasts had increased Ogt and Mgea5 expression. Of the known binding partners for E2F1, we queried whether retinoblastoma 1 (Rb1) might be involved. Rb1-deficient mouse embryonic fibroblasts showed increased levels of Ogt and Mgea5 expression, yet overexpression of E2F1 in the Rb1-deficient cells did not alter Ogt and Mgea5 expression, suggesting that Rb1 is required for E2F1-mediated suppression. In conclusion, this work identifies and validates some of the promoter elements for mouse Ogt and Mgea5 genes. Specifically, E2F1 negatively regulates both Ogt and Mgea5 expression in an Rb1 protein-dependent manner.
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Affiliation(s)
- Senthilkumar Muthusamy
- From the Institute of Molecular Cardiology and the Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Kyung U Hong
- From the Institute of Molecular Cardiology and the Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Sujith Dassanayaka
- From the Institute of Molecular Cardiology and the Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Tariq Hamid
- From the Institute of Molecular Cardiology and the Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Steven P Jones
- From the Institute of Molecular Cardiology and the Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
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Brooks AC, DeMartino AM, Brainard RE, Brittian KR, Bhatnagar A, Jones SP. Induction of activating transcription factor 3 limits survival following infarct-induced heart failure in mice. Am J Physiol Heart Circ Physiol 2015; 309:H1326-35. [PMID: 26342068 DOI: 10.1152/ajpheart.00513.2015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 08/07/2015] [Indexed: 01/24/2023]
Abstract
Numerous fibrotic and inflammatory changes occur in the failing heart. Recent evidence indicates that certain transcription factors, such as activating transcription factor 3 (ATF3), are activated during heart failure. Because ATF3 may be upregulated in the failing heart and affect inflammation, we focused on the potential role of ATF3 on postinfarct heart failure. We subjected anesthetized, wild-type mice to nonreperfused myocardial infarction and observed a significant induction in ATF3 expression and nuclear translocation. To test whether the induction of ATF3 affected the severity of heart failure, we subjected wild-type and ATF3-null mice to nonreperfused infarct-induced heart failure. There were no differences in cardiac function between the two genotypes, except at the 2-wk time point; however, ATF3-null mice survived the heart failure protocol at a significantly higher rate than the wild-type mice. Similar to the slight favorable improvements in chamber dimensions at 2 wk, we also observed greater cardiomyocyte hypertrophy and more fibrosis in the noninfarcted regions of the ATF3-null hearts compared with the wild-type. Nevertheless, there were no significant group differences at 4 wk. Furthermore, we found no significant differences in markers of inflammation between the wild-type and ATF3-null hearts. Our data suggest that ATF3 suppresses fibrosis early but not late during infarct-induced heart failure. Although ATF3 deficiency was associated with more fibrosis, this did not occur at the expense of survival, which was higher in the ATF3-null mice. Overall, ATF3 may serve a largely maladaptive role during heart failure.
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Affiliation(s)
- Alan C Brooks
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Angelica M DeMartino
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Robert E Brainard
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Kenneth R Brittian
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Aruni Bhatnagar
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
| | - Steven P Jones
- Institute of Molecular Cardiology and Diabetes and Obesity Center, Department of Medicine - Cardiovascular Division, University of Louisville School of Medicine, Louisville, Kentucky
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Abstract
INTRODUCTION In this study, we compared the shear bond strengths of five different adhesive techniques for attaching metal orthodontic brackets onto acrylic pontics. MATERIALS AND METHODS Two hundred upper left lateral incisor acrylic teeth with bonded brackets were divided into five groups - composite alone (control), composite following sandblasting, composite held with a mechanical undercut, cyanoacrylate adhesive and Panavia(®). The initial bond strength was tested using the Instron Universal Testing Machine. The fatigue bond strength was tested by subjecting each bracket to 5000 repetitive low-load cycles at 50% of the mean shear bond strength using the Dartec machine at 2 Hz. RESULTS Cyanoacrylate adhesive statistically exhibited the highest mean bond strength (19·82 MPa). This was followed by the mechanical undercut group (17·69 MPa) and the sandblasted group (17·18 MPa). There was no statistically significant difference when considering the effect of fatiguing (p = 0·238) as well as the interaction between the adhesive technique and the effect of fatiguing on the bond strength (p = 0·440). CONCLUSION The initial and fatigue bond strengths of the cyanoacrylate adhesive, sandblasted and undercut groups were significantly higher than the control and Panavia(®) groups when tested under laboratory conditions.
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Abstract
OBJECTIVE To investigate the force retention, and rates of space closure achieved by elastomeric chain and nickel titanium coil springs. DESIGN Randomized clinical trial. SETTING Eastman Dental Hospital, London and Queen Mary's University Hospital, Roehampton, 1998-2000. SUBJECTS, MATERIALS AND METHODS Twenty-two orthodontic patients, wearing the pre-adjusted edgewise appliance undergoing space closure in opposing quadrants, using sliding mechanics on 0.019 x 0.025-inch posted stainless steel archwires. Medium-spaced elastomeric chain [Durachain, OrthoCare (UK) Ltd., Bradford, UK] and 9-mm nickel titanium coil springs [OrthoCare (UK) Ltd.] were placed in opposing quadrants for 15 patients. Elastomeric chain only was used in a further seven patients. The initial forces on placement and residual forces at the subsequent visit were measured with a dial push-pull gauge [Orthocare (UK) Ltd]. Study models of eight patients were taken before and after space closure, from which measurements were made to establish mean space closure. MAIN OUTCOME MEASURES The forces were measured in grammes and space closure in millimetres. RESULTS Fifty-nine per cent (31/53) of the elastomeric sample maintained at least 50 per cent of the initial force over a time period of 1-15 weeks. No sample lost all its force, and the mean loss was 47 per cent (range: 0-76 per cent). Nickel titanium coil springs lost force rapidly over 6 weeks, following that force levels plateaued. Forty-six per cent (12/26) maintained at least 50 per cent of their initial force over a time period of 1-22 weeks, and mean force loss was 48 per cent (range: 12-68 per cent). The rate of mean weekly space closure for elastomeric chain was 0.21 mm and for nickel titanium coil springs 0.26 mm. There was no relationship between the initial force applied and rate of space closure. None of the sample failed during the study period giving a 100 per cent response rate. CONCLUSIONS In clinical use, the force retention of elastomeric chain was better than previously concluded. High initial forces resulted in high force decay. Nickel titanium coil springs and elastomeric chain closed spaces at a similar rate.
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Jones SP, Tang XL, Guo Y, Steenbergen C, Lefer DJ, Kukreja RC, Kong M, Li Q, Bhushan S, Zhu X, Du J, Nong Y, Stowers HL, Kondo K, Hunt GN, Goodchild TT, Orr A, Chang CC, Ockaili R, Salloum FN, Bolli R. The NHLBI-sponsored Consortium for preclinicAl assESsment of cARdioprotective therapies (CAESAR): a new paradigm for rigorous, accurate, and reproducible evaluation of putative infarct-sparing interventions in mice, rabbits, and pigs. Circ Res 2014; 116:572-86. [PMID: 25499773 DOI: 10.1161/circresaha.116.305462] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
RATIONALE Despite 4 decades of intense effort and substantial financial investment, the cardioprotection field has failed to deliver a single drug that effectively reduces myocardial infarct size in patients. A major reason is insufficient rigor and reproducibility in preclinical studies. OBJECTIVE To develop a multicenter, randomized, controlled, clinical trial-like infrastructure to conduct rigorous and reproducible preclinical evaluation of cardioprotective therapies. METHODS AND RESULTS With support from the National Heart, Lung, and Blood Institute, we established the Consortium for preclinicAl assESsment of cARdioprotective therapies (CAESAR), based on the principles of randomization, investigator blinding, a priori sample size determination and exclusion criteria, appropriate statistical analyses, and assessment of reproducibility. To validate CAESAR, we tested the ability of ischemic preconditioning to reduce infarct size in 3 species (at 2 sites/species): mice (n=22-25 per group), rabbits (n=11-12 per group), and pigs (n=13 per group). During this validation phase, (1) we established protocols that gave similar results between centers and confirmed that ischemic preconditioning significantly reduced infarct size in all species and (2) we successfully established a multicenter structure to support CAESAR's operations, including 2 surgical centers for each species, a Pathology Core (to assess infarct size), a Biomarker Core (to measure plasma cardiac troponin levels), and a Data Coordinating Center-all with the oversight of an external Protocol Review and Monitoring Committee. CONCLUSIONS CAESAR is operational, generates reproducible results, can detect cardioprotection, and provides a mechanism for assessing potential infarct-sparing therapies with a level of rigor analogous to multicenter, randomized, controlled clinical trials. This is a revolutionary new approach to cardioprotection. Importantly, we provide state-of-the-art, detailed protocols ("CAESAR protocols") for measuring infarct size in mice, rabbits, and pigs in a manner that is rigorous, accurate, and reproducible.
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Affiliation(s)
- Steven P Jones
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Xian-Liang Tang
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Yiru Guo
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Charles Steenbergen
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - David J Lefer
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Rakesh C Kukreja
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Maiying Kong
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Qianhong Li
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Shashi Bhushan
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Xiaoping Zhu
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Junjie Du
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Yibing Nong
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Heather L Stowers
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Kazuhisa Kondo
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Gregory N Hunt
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Traci T Goodchild
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Adam Orr
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Carlos C Chang
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Ramzi Ockaili
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Fadi N Salloum
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.)
| | - Roberto Bolli
- From the Cardiovascular Division, Department of Medicine, Institute of Molecular Cardiology, School of Medicine (S.P.J., X.-L.T., Y.G., Q.L., X.Z., J.D., Y.N., H.L.S., G.N.H., A.O., R.B.) and Department of Bioinformatics and Biostatistics, School of Public Health and Information Sciences (M.K.), University of Louisville, KY; Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD (C.S.); Department of Pharmacology, Center for Cardiovascular Excellence, Louisiana State University Health Sciences Center, New Orleans (D.J.L., S.B., K.K., T.T.G., C.C.C.); and Department of Medicine-Cardiovascular, Medical College of Virginia, Richmond (R.C.K., R.O., F.N.S.).
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Muthusamy S, DeMartino AM, Watson LJ, Brittian KR, Zafir A, Dassanayaka S, Hong KU, Jones SP. MicroRNA-539 is up-regulated in failing heart, and suppresses O-GlcNAcase expression. J Biol Chem 2014; 289:29665-76. [PMID: 25183011 DOI: 10.1074/jbc.m114.578682] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Derangements in metabolism and related signaling pathways characterize the failing heart. One such signal, O-linked β-N-acetylglucosamine (O-GlcNAc), is an essential post-translational modification regulated by two enzymes, O-GlcNAc transferase and O-GlcNAcase (OGA), which modulate the function of many nuclear and cytoplasmic proteins. We recently reported reduced OGA expression in the failing heart, which is consistent with the pro-adaptive role of increased O-GlcNAcylation during heart failure; however, molecular mechanisms regulating these enzymes during heart failure remain unknown. Using miRNA microarray analysis, we observed acute and chronic changes in expression of several miRNAs. Here, we focused on miR-539 because it was predicted to target OGA mRNA. Indeed, co-transfection of the OGA-3'UTR containing reporter plasmid and miR-539 overexpression plasmid significantly reduced reporter activity. Overexpression of miR-539 in neonatal rat cardiomyocytes significantly suppressed OGA expression and consequently increased O-GlcNAcylation; conversely, the miR-539 inhibitor rescued OGA protein expression and restored O-GlcNAcylation. In conclusion, this work identifies the first target of miR-539 in the heart and the first miRNA that regulates OGA. Manipulation of miR-539 may represent a novel therapeutic target in the treatment of heart failure and other metabolic diseases.
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Affiliation(s)
- Senthilkumar Muthusamy
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Angelica M DeMartino
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Lewis J Watson
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Kenneth R Brittian
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Ayesha Zafir
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Sujith Dassanayaka
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Kyung U Hong
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
| | - Steven P Jones
- From the Institute of Molecular Cardiology, and, Diabetes and Obesity Center, University of Louisville, Louisville, Kentucky 40202
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Leucker TM, Jones SP. Endothelial dysfunction as a nexus for endothelial cell-cardiomyocyte miscommunication. Front Physiol 2014; 5:328. [PMID: 25206341 PMCID: PMC4144117 DOI: 10.3389/fphys.2014.00328] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 08/08/2014] [Indexed: 12/16/2022] Open
Abstract
Most studies of the heart focus on cardiomyocytes (CM) at the exclusion of other cell types such as myocardial endothelial cells (EC). Such mono-cellular approaches propagate the presumption that EC provide a mere “passive lining” or supportive role. In fact, EC contribute to a dynamic network regulating vascular tone, cardiac development, and repair. Two distinct EC types, vascular EC and epicardial EC, possess important structural and signaling properties within both the healthy and diseased myocardium. In this review, we address EC-CM interactions in mature, healthy myocardium, followed by a discussion of diseases characterized by EC dysfunction. Finally, we consider strategies to reverse EC-CM “miscommunication” to improve patients' outcomes in various cardiovascular diseases.
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Affiliation(s)
- Thorsten M Leucker
- Division of Cardiology, Johns Hopkins University School of Medicine Baltimore, MD, USA
| | - Steven P Jones
- Department of Medicine - Cardiovascular, Institute of Molecular Cardiology, and Diabetes and Obesity Center, School of Medicine, University of Louisville Louisville, KY, USA
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Sansbury BE, DeMartino AM, Xie Z, Brooks AC, Brainard RE, Watson LJ, DeFilippis AP, Cummins TD, Harbeson MA, Brittian KR, Prabhu SD, Bhatnagar A, Jones SP, Hill BG. Metabolomic analysis of pressure-overloaded and infarcted mouse hearts. Circ Heart Fail 2014; 7:634-42. [PMID: 24762972 DOI: 10.1161/circheartfailure.114.001151] [Citation(s) in RCA: 165] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cardiac hypertrophy and heart failure are associated with metabolic dysregulation and a state of chronic energy deficiency. Although several disparate changes in individual metabolic pathways have been described, there has been no global assessment of metabolomic changes in hypertrophic and failing hearts in vivo. Hence, we investigated the impact of pressure overload and infarction on myocardial metabolism. METHODS AND RESULTS Male C57BL/6J mice were subjected to transverse aortic constriction or permanent coronary occlusion (myocardial infarction [MI]). A combination of LC/MS/MS and GC/MS techniques was used to measure 288 metabolites in these hearts. Both transverse aortic constriction and MI were associated with profound changes in myocardial metabolism affecting up to 40% of all metabolites measured. Prominent changes in branched-chain amino acids were observed after 1 week of transverse aortic constriction and 5 days after MI. Changes in branched-chain amino acids after MI were associated with myocardial insulin resistance. Longer duration of transverse aortic constriction and MI led to a decrease in purines, acylcarnitines, fatty acids, and several lysolipid and sphingolipid species but a marked increase in pyrimidines as well as ascorbate, heme, and other indices of oxidative stress. Cardiac remodeling and contractile dysfunction in hypertrophied hearts were associated with large increases in myocardial, but not plasma, levels of the polyamines putrescine and spermidine as well as the collagen breakdown product prolylhydroxyproline. CONCLUSIONS These findings reveal extensive metabolic remodeling common to both hypertrophic and failing hearts that are indicative of extracellular matrix remodeling, insulin resistance and perturbations in amino acid, and lipid and nucleotide metabolism.
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Affiliation(s)
- Brian E Sansbury
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Angelica M DeMartino
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Zhengzhi Xie
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Alan C Brooks
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Robert E Brainard
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Lewis J Watson
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Andrew P DeFilippis
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Timothy D Cummins
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Matthew A Harbeson
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Kenneth R Brittian
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Sumanth D Prabhu
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Aruni Bhatnagar
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Steven P Jones
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.)
| | - Bradford G Hill
- From the Department of Medicine, Institute of Molecular Cardiology, Division of Cardiology (B.E.S., A.M.D.M., Z.X., A.C.B., R.E.B., L.J.W., A.P.D., K.R.B., A.B., S.P.J., B.G.H.), Department of Medicine, Diabetes and Obesity Center (B.E.S., Z.X., A.C.B., T.D.C., M.A.H., K.R.B., A.B., S.P.J., B.G.H.), Department of Biochemistry and Molecular Biology (A.C.B., A.B., B.G.H.), and Department of Physiology and Biophysics (B.E.S., A.M.D., R.E.B., L.J.W., A.B., S.P.J., B.G.H.), University of Louisville, KY; Department of Medicine, Division of Cardiovascular Disease, University of Alabama at Birmingham, and Birmingham VAMC, AL (S.D.P.); and Department of Medicine, Johns Hopkins University, Baltimore, MD (A.P.D.).
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Brainard RE, Watson LJ, DeMartino AM, Brittian KR, Readnower RD, Boakye AA, Zhang D, Hoetker JD, Bhatnagar A, Baba SP, Jones SP. High fat feeding in mice is insufficient to induce cardiac dysfunction and does not exacerbate heart failure. PLoS One 2013; 8:e83174. [PMID: 24367585 PMCID: PMC3867436 DOI: 10.1371/journal.pone.0083174] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 11/11/2013] [Indexed: 12/31/2022] Open
Abstract
Preclinical studies of animals with risk factors, and how those risk factors contribute to the development of cardiovascular disease and cardiac dysfunction, are clearly needed. One such approach is to feed mice a diet rich in fat (i.e. 60%). Here, we determined whether a high fat diet was sufficient to induce cardiac dysfunction in mice. We subjected mice to two different high fat diets (lard or milk as fat source) and followed them for over six months and found no significant decrement in cardiac function (via echocardiography), despite robust adiposity and impaired glucose disposal. We next determined whether antecedent and concomitant exposure to high fat diet (lard) altered the murine heart's response to infarct-induced heart failure; high fat feeding during, or before and during, heart failure did not significantly exacerbate cardiac dysfunction. Given the lack of a robust effect on cardiac dysfunction with high fat feeding, we then examined a commonly used mouse model of overt diabetes, hyperglycemia, and obesity (db/db mice). db/db mice (or STZ treated wild-type mice) subjected to pressure overload exhibited no significant exacerbation of cardiac dysfunction; however, ischemia-reperfusion injury significantly depressed cardiac function in db/db mice compared to their non-diabetic littermates. Thus, we were able to document a negative influence of a risk factor in a relevant cardiovascular disease model; however, this did not involve exposure to a high fat diet. High fat diet, obesity, or hyperglycemia does not necessarily induce cardiac dysfunction in mice. Although many investigators use such diabetes/obesity models to understand cardiac defects related to risk factors, this study, along with those from several other groups, serves as a cautionary note regarding the use of murine models of diabetes and obesity in the context of heart failure.
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Affiliation(s)
- Robert E. Brainard
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Lewis J. Watson
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Angelica M. DeMartino
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Kenneth R. Brittian
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Ryan D. Readnower
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Adjoa Agyemang Boakye
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Deqing Zhang
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Joseph David Hoetker
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Aruni Bhatnagar
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Shahid Pervez Baba
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Steven P. Jones
- Department of Physiology and Biophysics, Institute of Molecular Cardiology, Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
- * E-mail:
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Casey C, Gill DS, Jones SP. A comparison of skeletal maturation in patients with tooth agenesis and unaffected controls assessed by the cervical vertebral maturation (CVM) index. J Orthod 2013; 40:286-98. [PMID: 24297960 DOI: 10.1179/1465313313y.0000000070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVE The aims of this study were to (1) investigate if there is a difference in skeletal maturation between tooth agenesis and control patients and (2) whether skeletal maturation is affected by the severity of tooth agenesis. The cervical vertebral maturation (CVM) index can be used to assess skeletal maturation. DESIGN A retrospective cross-sectional study. SETTING Eastman Dental Hospital, London, UK. METHODS AND MATERIALS A total of 360 cephalograms of patients aged 9-17 years (164 males and 196 females) allocated to four subgroups (mild, moderate and severe tooth agenesis patients, and controls) were assessed retrospectively. There were 90 patients in each of the four subgroups. The skeletal maturation of each subject was assessed both quantitatively and qualitatively using the CVM index. All patients in the study were either currently receiving treatment or had been discharged from the hospital. RESULTS There was no statistically significant relationship between skeletal maturation and the presence of tooth agenesis. Furthermore, there was no statistically significant relationship between the skeletal maturity of patients and different severities of tooth agenesis. CONCLUSIONS The data obtained from this group of patients and using this measurement tool alone does not supply sufficient reason to reject the null hypothesis. However, it suggests that it is possible that no difference exists between the groups.
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Affiliation(s)
- Christine Casey
- C. Casey, Orthodontic Department, Eastman Dental Hospital, 256 Gray's Inn Road, London WC1X 8LD, UK.
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