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Childers RC, Trask AJ, Liu J, Lucchesi PA, Gooch KJ. Paired Pressure-Volume Loop Analysis and Biaxial Mechanical Testing Characterize Differences in Left Ventricular Tissue Stiffness of Volume Overload and Angiotensin-Induced Pressure Overload Hearts. J Biomech Eng 2021; 143:081003. [PMID: 33729495 PMCID: PMC10782875 DOI: 10.1115/1.4050541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 01/29/2021] [Indexed: 12/18/2022]
Abstract
Pressure overload (PO) and volume overload (VO) of the heart result in distinctive changes to geometry, due to compensatory structural remodeling. This remodeling potentially leads to changes in tissue mechanical properties. Understanding such changes is important, as tissue modulus has an impact on cardiac performance, disease progression, and influences on cell phenotype. Pressure-volume (PV) loop analysis, a clinically relevant method for measuring left ventricular (LV) chamber stiffness, was performed in vivo on control rat hearts and rats subjected to either chronic PO through Angiotensin-II infusion (4-weeks) or VO (8-weeks). Immediately following PV loops, biaxial testing was performed on LV free wall tissue to directly measure tissue mechanical properties. The β coefficient, an index of chamber stiffness calculated from the PV loop analysis, increased 98% in PO (n = 4) and decreased 38% in VO (n = 5) compared to control (n = 6). Material constants of LV walls obtained from ex vivo biaxial testing (n = 9-10) were not changed in Angiotensin-II induced PO and decreased by about half in VO compared to control (47% in the circumferential and 57% the longitudinal direction). PV loop analysis showed the expected increase in chamber stiffness of PO and expected decrease in chamber stiffness of VO. Biaxial testing showed a decreased modulus of the myocardium of the VO model, but no changes in the PO model, this suggests the increased chamber stiffness in PO, as shown in the PV loop analysis, may be secondary to changes in tissue mass and/or geometry but not an increase in passive tissue mechanical properties.
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Affiliation(s)
- Rachel C. Childers
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210
| | - Aaron J. Trask
- Center for Cardiovascular Research and The Heart Center, Department of Pediatrics, Nationwide Children's Hospital, The Ohio State University, Columbus, OH 43205
| | - Jun Liu
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210
| | - Pamela A. Lucchesi
- Departments of Pharmacology and Physiology, New York Medical College, Valhalla, NY 10595
| | - Keith J. Gooch
- Institute Frick Center for Heart Failure, Department of Biomedical Engineering, Davis Heart Lung Research, The Ohio State University Fontana Labs, 140 W 19th Avenue, Columbus, OH 43210
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2
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Childers RC, Lucchesi PA, Gooch KJ. Decreased Substrate Stiffness Promotes a Hypofibrotic Phenotype in Cardiac Fibroblasts. Int J Mol Sci 2021; 22:ijms22126231. [PMID: 34207723 PMCID: PMC8230133 DOI: 10.3390/ijms22126231] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/20/2021] [Accepted: 05/26/2021] [Indexed: 11/16/2022] Open
Abstract
A hypofibrotic phenotype has been observed in cardiac fibroblasts (CFs) isolated from a volume overload heart failure model, aortocaval fistula (ACF). This paradoxical phenotype results in decreased ECM synthesis despite increased TGF-β presence. Since ACF results in decreased tissue stiffness relative to control (sham) hearts, this study investigates whether the effects of substrate stiffness could account for the observed hypofibrotic phenotype in CFs isolated from ACF. CFs isolated from ACF and sham hearts were plated on polyacrylamide gels of a range of stiffness (2 kPa to 50 kPa). Markers related to cytoskeletal and fibrotic proteins were measured. Aspects of the hypofibrotic phenotype observed in ACF CFs were recapitulated by sham CFs on soft substrates. For instance, sham CFs on the softest gels compared to ACF CFs on the stiffest gels results in similar CTGF (0.80 vs. 0.76) and transgelin (0.44 vs. 0.57) mRNA expression. The changes due to stiffness may be explained by the observed decreased nuclear translocation of transcriptional regulators, MRTF-A and YAP. ACF CFs appear to have a mechanical memory of a softer environment, supported by a hypofibrotic phenotype overall compared to sham with less YAP detected in the nucleus, and less CTGF and transgelin on all stiffnesses.
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Affiliation(s)
- Rachel C. Childers
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA;
| | - Pamela A. Lucchesi
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595, USA
- Correspondence: (P.A.L.); (K.J.G.)
| | - Keith J. Gooch
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA;
- Correspondence: (P.A.L.); (K.J.G.)
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Pascale JV, Lucchesi PA, Garcia V. Unraveling the Role of 12- and 20- HETE in Cardiac Pathophysiology: G-Protein-Coupled Receptors, Pharmacological Inhibitors, and Transgenic Approaches. J Cardiovasc Pharmacol 2021; 77:707-717. [PMID: 34016841 PMCID: PMC8523029 DOI: 10.1097/fjc.0000000000001013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 03/03/2021] [Indexed: 12/17/2022]
Abstract
ABSTRACT Arachidonic acid-derived lipid mediators play crucial roles in the development and progression of cardiovascular diseases. Eicosanoid metabolites generated by lipoxygenases and cytochrome P450 enzymes produce several classes of molecules, including the epoxyeicosatrienoic acid (EET) and hydroxyeicosatetraenoic acids (HETE) family of bioactive lipids. In general, the cardioprotective effects of EETs have been documented across a number of cardiac diseases. In contrast, members of the HETE family have been shown to contribute to the pathogenesis of ischemic cardiac disease, maladaptive cardiac hypertrophy, and heart failure. The net effect of 12(S)- and 20-HETE depends upon the relative amounts generated, ratio of HETEs:EETs produced, timing of synthesis, as well as cellular and subcellular mechanisms activated by each respective metabolite. HETEs are synthesized by and affect multiple cell types within the myocardium. Moreover, cytochrome P450-derived and lipoxygenase- derived metabolites have been shown to directly influence cardiac myocyte growth and the regulation of cardiac fibroblasts. The mechanistic data uncovered thus far have employed the use of enzyme inhibitors, HETE antagonists, and the genetic manipulation of lipid-producing enzymes and their respective receptors, all of which influence a complex network of outcomes that complicate data interpretation. This review will summarize and integrate recent findings on the role of 12(S)-/20-HETE in cardiac diseases.
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Affiliation(s)
| | | | - Victor Garcia
- Department of Pharmacology, New York Medical College, Valhalla, NY
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4
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Childers RC, Sunyecz I, West TA, Cismowski MJ, Lucchesi PA, Gooch KJ. Role of the cytoskeleton in the development of a hypofibrotic cardiac fibroblast phenotype in volume overload heart failure. Am J Physiol Heart Circ Physiol 2018; 316:H596-H608. [PMID: 30575422 DOI: 10.1152/ajpheart.00095.2018] [Citation(s) in RCA: 12] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hemodynamic load regulates cardiac remodeling. In contrast to pressure overload (increased afterload), hearts subjected to volume overload (VO; preload) undergo a distinct pattern of eccentric remodeling, chamber dilation, and decreased extracellular matrix content. Critical profibrotic roles of cardiac fibroblasts (CFs) in postinfarct remodeling and in response to pressure overload have been well established. Little is known about the CF phenotype in response to VO. The present study characterized the phenotype of primary cultures of CFs isolated from hearts subjected to 4 wk of VO induced by an aortocaval fistula. Compared with CFs isolated from sham hearts, VO CFs displayed a "hypofibrotic" phenotype, characterized by a ~50% decrease in the profibrotic phenotypic markers α-smooth muscle actin, connective tissue growth factor, and collagen type I, despite increased levels of profibrotic transforming growth factor-β1 and an intact canonical transforming growth factor-β signaling pathway. Actin filament dynamics were characterized, which regulate the CF phenotype in response to biomechanical signals. Actin polymerization was determined by the relative amounts of G-actin monomers versus F-actin. Compared with sham CFs, VO CFs displayed ~78% less F-actin and an increased G-actin-to-F-actin ratio (G/F ratio). In sham CFs, treatment with the Rho kinase inhibitor Y-27632 to increase the G/F ratio resulted in recapitulation of the hypofibrotic CF phenotype observed in VO CFs. Conversely, treatment of VO CFs with jasplakinolide to decrease the G/F ratio restored a more profibrotic response (>2.5-fold increase in α-smooth muscle actin, connective tissue growth factor, and collagen type I). NEW & NOTEWORTHY The present study is the first to describe a "hypofibrotic" phenotype of cardiac fibroblasts isolated from a volume overload model. Our results suggest that biomechanical regulation of actin microfilament stability and assembly is a critical mediator of cardiac fibroblast phenotypic modulation.
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Affiliation(s)
- Rachel C Childers
- Department of Biomedical Engineering, The Ohio State University , Columbus, Ohio.,The Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital , Columbus, Ohio.,The Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University , Columbus, Ohio
| | - Ian Sunyecz
- Department of Biomedical Engineering, The Ohio State University , Columbus, Ohio.,The Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital , Columbus, Ohio
| | - T Aaron West
- The Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital , Columbus, Ohio
| | - Mary J Cismowski
- The Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital , Columbus, Ohio
| | - Pamela A Lucchesi
- The Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital , Columbus, Ohio.,Department of Pediatrics, The Ohio State University , Columbus, Ohio
| | - Keith J Gooch
- Department of Biomedical Engineering, The Ohio State University , Columbus, Ohio.,The Dorothy M. Davis Heart & Lung Research Institute, The Ohio State University , Columbus, Ohio
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Bosse K, Hans CP, Zhao N, Koenig SN, Huang N, Guggilam A, LaHaye S, Tao G, Lucchesi PA, Lincoln J, Lilly B, Garg V. Corrigendum to "Endothelial nitric oxide signaling regulates Notch1 in aortic valve disease" [J. Mol. Cell. Cardiol. 60 (2013) 27-35]. J Mol Cell Cardiol 2018; 121:307. [PMID: 29778253 DOI: 10.1016/j.yjmcc.2018.04.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 10/14/2022]
Affiliation(s)
- K Bosse
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - C P Hans
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - N Zhao
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - S N Koenig
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - N Huang
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - A Guggilam
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - S LaHaye
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - G Tao
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - P A Lucchesi
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - J Lincoln
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - B Lilly
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - V Garg
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA.
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Abstract
While the isolation and culture of vascular smooth muscle cells (VSMCs) from large vessels is well established, we sought to isolate and culture VSMCs from the coronary circulation. Hearts with intact aortic arches were removed and perfused via retrograde Langendorff with digestion solution containing 300 Units/ml of collagenase type II, 0.1 mg/ml soybean trypsin inhibitor and 1 M CaCl2. The perfusates were collected at 15 min intervals for 90 min, pelleted by centrifugation, resuspended in plating media, and plated on tissue culture dishes. VSMCs were characterized by presence of SM22α, α-SMA, and vimentin. One of the main advantages of using this technique is the ability to isolate VSMCs from the coronary circulation of mice. Although the small number of cells obtained can limit some of the applications for which the cells can be utilized, isolated coronary VSMCs can be used in a variety of well-established cell culture techniques and assays. Studies investigating VSMCs from genetically modified mice can provide further information about structure-function and signaling processes associated with vascular pathologies.
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Affiliation(s)
- Kathryn E Husarek
- School of Biomedical Science, The Ohio State University College of Medicine; Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital
| | - Xiaojin Zhang
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital
| | - Patricia E McCallinhart
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital
| | - Pamela A Lucchesi
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital; Department of Pediatrics, The Ohio State University College of Medicine
| | - Aaron J Trask
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital; Department of Pediatrics, The Ohio State University College of Medicine;
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Thompson MD, Cismowski MJ, Trask AJ, Lallier SW, Graf AE, Rogers LK, Lucchesi PA, Brigstock DR. Enhanced Steatosis and Fibrosis in Liver of Adult Offspring Exposed to Maternal High-Fat Diet. Gene Expr 2016; 17:47-59. [PMID: 27342733 PMCID: PMC5611859 DOI: 10.3727/105221616x692135] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Early life exposures can increase the risk of developing chronic diseases including nonalcoholic fatty liver disease. Maternal high-fat diet increases susceptibility to development of steatosis in the offspring. We determined the effect of maternal high-fat diet exposure in utero and during lactation on offspring liver histopathology, particularly fibrosis. Female C57Bl/6J mice were fed a control or high-fat diet (HFD) for 8 weeks and bred with lean males. Nursing dams were continued on the same diet with offspring sacrificed during the perinatal period or maintained on either control or high-fat diet for 12 weeks. Increased hepatocyte proliferation and stellate cell activation were observed in the liver of HFD-exposed pups. Offspring exposed to perinatal high-fat diet and high-fat diet postweaning showed extensive hepatosteatosis compared to offspring on high-fat diet after perinatal control diet. Offspring exposed to perinatal high-fat diet and then placed on control diet for 12 weeks developed steatosis and pericellular fibrosis. Importantly, we found that exposure to perinatal high-fat diet unexpectedly promotes more rapid disease progression of nonalcoholic fatty liver disease, with a sustained fibrotic phenotype, only in adult offspring fed a postweaning control diet.
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Affiliation(s)
- Michael D. Thompson
- *Division of Endocrinology, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Mary J. Cismowski
- †Center for Cardiovascular and Pulmonary Research, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Aaron J. Trask
- †Center for Cardiovascular and Pulmonary Research, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Scott W. Lallier
- ‡Center for Perinatal Research, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Amanda E. Graf
- ‡Center for Perinatal Research, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Lynette K. Rogers
- ‡Center for Perinatal Research, Nationwide Children’s Hospital, Columbus, OH, USA
| | - Pamela A. Lucchesi
- †Center for Cardiovascular and Pulmonary Research, Nationwide Children’s Hospital, Columbus, OH, USA
- §Department of Basic Sciences, The Commonwealth Medical College, Scranton, PA, USA
| | - David R. Brigstock
- ¶Center for Clinical and Translational Research, Nationwide Children’s Hospital, Columbus, OH, USA
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Hibino N, Cismowski MJ, Lilly B, McConnell PI, Shinoka T, Cheatham JP, Lucchesi PA, Galantowicz ME, Trask AJ. Potential Molecular Mechanism of Retrograde Aortic Arch Stenosis in the Hybrid Approach to Hypoplastic Left Heart Syndrome. Ann Thorac Surg 2015; 100:1013-9; discussion 1019-20. [PMID: 26163359 DOI: 10.1016/j.athoracsur.2015.04.125] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/14/2015] [Accepted: 04/17/2015] [Indexed: 01/13/2023]
Abstract
BACKGROUND The hybrid palliation for hypoplastic left heart syndrome has emerged as an alternative approach to the Norwood procedure. The development of patent ductus arteriosus (PDA) in-stent stenosis can cause retrograde aortic arch stenosis (RAAS), leading to significant morbidity. This study aimed to identify potential mechanisms of PDA in-stent stenosis contributing to RAAS. METHODS Tissues from stented PDAs were collected from 17 patients undergoing comprehensive stage II repair between 2009 and 2014. Patients requiring RAAS intervention based on cardiology-surgery consensus were defined as RAAS(+) (n = 10), whereas patients without any RAAS intervention were defined as RAAS(-) (n = 7). Tissues were examined by quantitative polymerase chain reaction analysis for vascular smooth muscle cell (VSMC) differentiation and proliferation markers. RESULTS Patient characteristics were hypoplastic left heart syndrome with aortic atresia in 6 and with aortic stenosis in 3; unbalanced atrioventricular canal in 3; double-inlet left ventricle/transposition of the great arteries in 3; and double-outlet right ventricle in 2. VSMC differentiation markers (β-actin, SM22, and calponin) and signaling pathways for VSMC modulation (transforming growth factor-β1, Notch, and platelet derived growth factor-BB) were significantly higher in the RAAS(+) than in RAAS(-) patients. The proliferation marker Ki67 was increased in RAAS(+) patients. Cell cycle markers were comparable in both groups. CONCLUSIONS Increased VSMC differentiation and proliferation markers suggest a mechanism for inward neointima formation of the PDA in RAAS. The apparent lack of change in cell cycle markers is contrary to coronary artery in-stent stenosis, suggesting further targets should be examined. Combined primary in vitro PDA cell culture and proteomics can be strong tools to elucidate targets to reduce PDA in-stent stenosis for RAAS in the future.
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Affiliation(s)
- Narutoshi Hibino
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio
| | - Mary J Cismowski
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio
| | - Brenda Lilly
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio
| | - Patrick I McConnell
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Cardiothoracic Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Toshiharu Shinoka
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Cardiothoracic Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - John P Cheatham
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio
| | - Pamela A Lucchesi
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio
| | - Mark E Galantowicz
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Cardiothoracic Surgery, The Ohio State University College of Medicine, Columbus, Ohio
| | - Aaron J Trask
- The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio.
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Husarek KE, Katz PS, Trask AJ, Galantowicz ML, Cismowski MJ, Lucchesi PA. The angiotensin receptor blocker losartan reduces coronary arteriole remodeling in type 2 diabetic mice. Vascul Pharmacol 2015; 76:28-36. [PMID: 26133668 DOI: 10.1016/j.vph.2015.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/09/2015] [Accepted: 06/27/2015] [Indexed: 01/02/2023]
Abstract
Cardiovascular complications are a leading cause of morbidity and mortality in type 2 diabetes mellitus (T2DM) and are associated with alterations of blood vessel structure and function. Although endothelial dysfunction and aortic stiffness have been documented, little is known about the effects of T2DM on coronary microvascular structural remodeling. The renin-angiotensin-aldosterone system plays an important role in large artery stiffness and mesenteric vessel remodeling in hypertension and T2DM. The goal of this study was to determine whether the blockade of AT1R signaling dictates vascular smooth muscle growth that partially underlies coronary arteriole remodeling in T2DM. Control and db/db mice were given AT1R blocker losartan via drinking water for 4 weeks. Using pressure myography, we found that coronary arterioles from 16-week db/db mice undergo inward hypertrophic remodeling due to increased wall thickness and wall-to-lumen ratio with a decreased lumen diameter. This remodeling was accompanied by decreased elastic modulus (decreased stiffness). Losartan treatment decreased wall thickness, wall-to-lumen ratio, and coronary arteriole cell number in db/db mice. Losartan treatment did not affect incremental elastic modulus. However, losartan improved coronary flow reserve. Our data suggest that Ang II-AT1R signaling mediates, at least in part, coronary arteriole inward hypertrophic remodeling in T2DM without affecting vascular mechanics, further suggesting that targeting the coronary microvasculature in T2DM may help reduce cardiac ischemic events.
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Affiliation(s)
- Kathryn E Husarek
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States; School of Biomedical Science, The Ohio State University College of Medicine, Columbus, OH, United States
| | - Paige S Katz
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States; Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA, United States
| | - Aaron J Trask
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, United States
| | - Maarten L Galantowicz
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States
| | - Mary J Cismowski
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States
| | - Pamela A Lucchesi
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, United States; Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, United States.
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10
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Wilson K, Guggilam A, West TA, Zhang X, Trask AJ, Cismowski MJ, de Tombe P, Sadayappan S, Lucchesi PA. Effects of a myofilament calcium sensitizer on left ventricular systolic and diastolic function in rats with volume overload heart failure. Am J Physiol Heart Circ Physiol 2014; 307:H1605-17. [PMID: 25260618 DOI: 10.1152/ajpheart.00423.2014] [Citation(s) in RCA: 13] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Aortocaval fistula (ACF)-induced volume overload (VO) heart failure (HF) results in progressive left ventricular (LV) dysfunction. Hemodynamic load reversal during pre-HF (4 wk post-ACF; REV) results in rapid structural but delayed functional recovery. This study investigated myocyte and myofilament function in ACF and REV and tested the hypothesis that a myofilament Ca(2+) sensitizer would improve VO-induced myofilament dysfunction in ACF and REV. Following the initial sham or ACF surgery in male Sprague-Dawley rats (200-240 g) at week 0, REV surgery and experiments were performed at weeks 4 and 8, respectively. In ACF, decreased LV function is accompanied by impaired sarcomeric shortening and force generation and decreased Ca(2+) sensitivity, whereas, in REV, impaired LV function is accompanied by decreased Ca(2+) sensitivity. Intravenous levosimendan (Levo) elicited the best inotropic and lusitropic responses and was selected for chronic oral studies. Subsets of ACF and REV rats were given vehicle (water) or Levo (1 mg/kg) in drinking water from weeks 4-8. Levo improved systolic (% fractional shortening, end-systolic elastance, and preload-recruitable stroke work) and diastolic (τ, dP/dtmin) function in ACF and REV. Levo improved Ca(2+) sensitivity without altering the amplitude and kinetics of the intracellular Ca(2+) transient. In ACF-Levo, increased cMyBP-C Ser-273 and Ser-302 and cardiac troponin I Ser-23/24 phosphorylation correlated with improved diastolic relaxation, whereas, in REV-Levo, increased cMyBP-C Ser-273 phosphorylation and increased α-to-β-myosin heavy chain correlated with improved diastolic relaxation. We concluded that Levo improves LV function, and myofilament composition and regulatory protein phosphorylation likely play a key role in improving function.
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Affiliation(s)
- Kristin Wilson
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio; Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio
| | - Anuradha Guggilam
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio
| | - T Aaron West
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio
| | - Xiaojin Zhang
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio
| | - Aaron J Trask
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, Ohio
| | - Mary J Cismowski
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, Ohio
| | - Pieter de Tombe
- Department of Cellular and Molecular Physiology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois
| | - Sakthivel Sadayappan
- Department of Cellular and Molecular Physiology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois
| | - Pamela A Lucchesi
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, College of Medicine, The Ohio State University, Columbus, Ohio;
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12
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Wilson K, Lucchesi PA. Myofilament dysfunction as an emerging mechanism of volume overload heart failure. Pflugers Arch 2014; 466:1065-77. [PMID: 24488008 DOI: 10.1007/s00424-014-1455-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 01/17/2014] [Accepted: 01/19/2014] [Indexed: 11/28/2022]
Abstract
Two main hemodynamic overload mechanisms [i.e., volume and pressure overload (VO and PO, respectively] result in heart failure (HF), and these two mechanisms have divergent pathologic alterations and different pathophysiological mechanisms. Extensive evidence from animal models and human studies of PO demonstrate a clear association with alterations in Ca(2+) homeostasis. By contrast, emerging evidence from animal models and patients with regurgitant valve disease and dilated cardiomyopathy point toward a more prominent role of myofilament dysfunction. With respect to VO HF, key features of excitation-contraction coupling defects, myofilament dysfunction, and extracellular matrix composition will be discussed.
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Affiliation(s)
- Kristin Wilson
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
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Bosse K, Hans CP, Zhao N, Koenig SN, Huang N, Guggilam A, LaHaye S, Tao G, Lucchesi PA, Lincoln J, Lilly B, Garg V. Endothelial nitric oxide signaling regulates Notch1 in aortic valve disease. J Mol Cell Cardiol 2013; 60:27-35. [PMID: 23583836 DOI: 10.1016/j.yjmcc.2013.04.001] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [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] [Received: 10/17/2012] [Revised: 03/14/2013] [Accepted: 04/03/2013] [Indexed: 01/22/2023]
Abstract
The mature aortic valve is composed of a structured trilaminar extracellular matrix that is interspersed with aortic valve interstitial cells (AVICs) and covered by endothelium. Dysfunction of the valvular endothelium initiates calcification of neighboring AVICs leading to calcific aortic valve disease (CAVD). The molecular mechanism by which endothelial cells communicate with AVICs and cause disease is not well understood. Using a co-culture assay, we show that endothelial cells secrete a signal to inhibit calcification of AVICs. Gain or loss of nitric oxide (NO) prevents or accelerates calcification of AVICs, respectively, suggesting that the endothelial cell-derived signal is NO. Overexpression of Notch1, which is genetically linked to human CAVD, retards the calcification of AVICs that occurs with NO inhibition. In AVICs, NO regulates the expression of Hey1, a downstream target of Notch1, and alters nuclear localization of Notch1 intracellular domain. Finally, Notch1 and NOS3 (endothelial NO synthase) display an in vivo genetic interaction critical for proper valve morphogenesis and the development of aortic valve disease. Our data suggests that endothelial cell-derived NO is a regulator of Notch1 signaling in AVICs in the development of the aortic valve and adult aortic valve disease.
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Affiliation(s)
- Kevin Bosse
- Center for Cardiovascular and Pulmonary Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
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14
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Halleck KE, Katz PS, Dos Santos KT, Trask AJ, Lucchesi PA. Angiotensin II and mitochondrial‐derived oxidative stress play a role in coronary arteriole remodeling in type 2 diabetes. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1185.6] [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: 11/11/2022]
Affiliation(s)
- Kathryn Elizabeth Halleck
- Biomedical Science Graduate ProgramOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchResearch Institute at Nationwide Childrens HospitalColumbusOH
| | - Paige S Katz
- Center for Cardiovascular and Pulmonary ResearchResearch Institute at Nationwide Childrens HospitalColumbusOH
- LSU Health Sciences CenterNew OrleansLA
| | - Karen Tiago Dos Santos
- Center for Cardiovascular and Pulmonary ResearchResearch Institute at Nationwide Childrens HospitalColumbusOH
| | - Aaron J. Trask
- Department of PediatricsOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchResearch Institute at Nationwide Childrens HospitalColumbusOH
| | - Pamela A. Lucchesi
- Department of PediatricsOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchResearch Institute at Nationwide Childrens HospitalColumbusOH
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15
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Lewis K, Guggilam A, Trask AJ, Cismowski MJ, Lucchesi PA. The myofilament Ca2+ sensitizer levosimendan maintains systolic function in volume overload heart failure in rats. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.879.6] [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: 11/11/2022]
Affiliation(s)
- Kristin Lewis
- Veterinary BiosciencesThe Ohio State UniversityColumbusOH
- Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Anuradha Guggilam
- Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Aaron J Trask
- PediatricsThe Ohio State UniversityColumbusOH
- Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Mary J Cismowski
- PediatricsThe Ohio State UniversityColumbusOH
- Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Pamela A Lucchesi
- PediatricsThe Ohio State UniversityColumbusOH
- Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
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16
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Affiliation(s)
- Aaron J. Trask
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
| | - Mary J. Cismowski
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
| | - Kathryn Halleck
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Integrated Biomedical Graduate ProgramThe Ohio State UniversityColumbusOH
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
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17
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Galantowicz M, West TA, Zhang X, Childers RC, Gooch KJ, Weibel JC, Cismowski MJ, Lucchesi PA. The Passive Mechanical Environment Alters the Phenotype of Cardiac Fibroblasts. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1129.15] [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: 11/11/2022]
Affiliation(s)
- Maarten Galantowicz
- Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - T. Aaron West
- Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Xiaojin Zhang
- Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | | | - Keith J. Gooch
- Biomedical EngineeringThe Ohio State UniversityColumbusOH
- Davis Heart and Lung Research InstituteThe Ohio State UniversityColumbusOH
| | - John C. Weibel
- Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Mary J. Cismowski
- Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- PediatricsThe Ohio State UniversityColumbusOH
| | - Pamela A. Lucchesi
- Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- PediatricsThe Ohio State UniversityColumbusOH
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18
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Guggilam A, Hutchinson KR, West TA, Kelly AP, Galantowicz ML, Davidoff AJ, Sadayappan S, Lucchesi PA. In vivo and in vitro cardiac responses to beta-adrenergic stimulation in volume-overload heart failure. J Mol Cell Cardiol 2012; 57:47-58. [PMID: 23220155 DOI: 10.1016/j.yjmcc.2012.11.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [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] [Received: 06/05/2012] [Revised: 11/08/2012] [Accepted: 11/22/2012] [Indexed: 01/26/2023]
Abstract
Hearts in volume overload (VO) undergo progressive ventricular hypertrophy resulting in chronic heart failure that is unresponsive to β-adrenergic agonists. This study compared left ventricular (LV) and isolated cardiomyocyte contractility and β-adrenergic responsiveness in rats with end-stage VO heart failure (HF). Adult male Sprague-Dawley rats were studied 21 weeks after aortocaval fistula (ACF) or sham surgery. Echocardiography revealed decreased fractional shortening accompanied by increased LV chamber diameter and decreased eccentric dilatation index at end-stage ACF compared to sham. Hemodynamic measurements showed a decrease in the slope of end-systolic pressure-volume relationship, indicating systolic dysfunction. Isolated LV myocytes from ACF exhibited decreased peak sarcomere shortening and kinetics. Both Ca2+ transient amplitude and kinetics were increased in ACF myocytes, with no change under the integrated Ca2+ curves relating to contraction and relaxation phases. Increases in ryanodine receptor and phospholamban phosphorylation, along with a decrease in SERCA2 levels, were observed in ACF. These changes were associated with decreased expression of β-myosin heavy chain, cardiac troponin I and cardiac myosin binding protein-C. In vivo inotropic responses to β-adrenergic stimulation were attenuated in ACF. Interestingly, ACF myocytes exhibited a similar peak shortening to those of sham in response to a β-adrenergic agonist. The protein expression of the gap junction protein connexin-43 was decreased, although its phosphorylation at Ser-368 increased. These changes were associated with alterations in Src and ZO-1. In summary, these data suggest that the disconnect in β-adrenergic responsiveness between in vivo and in vitro conditions may be associated with altered myofilament Ca2+ sensitivity and connexin-43 degradation.
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Affiliation(s)
- Anuradha Guggilam
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
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19
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Tao G, Levay AK, Peacock JD, Huk DJ, Both SN, Purcell NH, Pinto JR, Galantowicz ML, Koch M, Lucchesi PA, Birk DE, Lincoln J. Collagen XIV is important for growth and structural integrity of the myocardium. J Mol Cell Cardiol 2012; 53:626-38. [PMID: 22906538 DOI: 10.1016/j.yjmcc.2012.08.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [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] [Received: 06/09/2012] [Revised: 07/20/2012] [Accepted: 08/04/2012] [Indexed: 01/01/2023]
Abstract
Collagen XIV is a fibril-associated collagen with an interrupted triple helix (FACIT). Previous studies have shown that this collagen type regulates early stages of fibrillogenesis in connective tissues of high mechanical demand. Mice null for Collagen XIV are viable, however formation of the interstitial collagen network is defective in tendons and skin leading to reduced biomechanical function. The assembly of a tightly regulated collagen network is also required in the heart, not only for structural support but also for controlling cellular processes. Collagen XIV is highly expressed in the embryonic heart, notably within the cardiac interstitium of the developing myocardium, however its role has not been elucidated. To test this, we examined cardiac phenotypes in embryonic and adult mice devoid of Collagen XIV. From as early as E11.5, Col14a1(-/-) mice exhibit significant perturbations in mRNA levels of many other collagen types and remodeling enzymes (MMPs, TIMPs) within the ventricular myocardium. By post natal stages, collagen fibril organization is in disarray and the adult heart displays defects in ventricular morphogenesis. In addition to the extracellular matrix, Col14a1(-/-) mice exhibit increased cardiomyocyte proliferation at post natal, but not E11.5 stages, leading to increased cell number, yet cell size is decreased by 3 months of age. In contrast to myocytes, the number of cardiac fibroblasts is reduced after birth associated with increased apoptosis. As a result of these molecular and cellular changes during embryonic development and post natal maturation, cardiac function is diminished in Col14a1(-/-) mice from 3 months of age; associated with dilation in the absence of hypertrophy, and reduced ejection fraction. Further, Col14a1 deficiency leads to a greater increase in left ventricular wall thickening in response to pathological pressure overload compared to wild type animals. Collectively, these studies identify a new role for type XIV collagen in the formation of the cardiac interstitium during embryonic development, and highlight the importance of the collagen network for myocardial cell survival, and function of the working myocardium after birth.
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Affiliation(s)
- Ge Tao
- Molecular, Cell and Developmental Biology Graduate Program, Leonard M. Miller School of Medicine, Miami, FL 33101, USA
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20
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Trask AJ, Delbin MA, Katz PS, Zanesco A, Lucchesi PA. Differential coronary resistance microvessel remodeling between type 1 and type 2 diabetic mice: impact of exercise training. Vascul Pharmacol 2012; 57:187-93. [PMID: 22885305 DOI: 10.1016/j.vph.2012.07.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 07/25/2012] [Accepted: 07/26/2012] [Indexed: 11/19/2022]
Abstract
The goals of the present study were to compare coronary resistance microvessel (CRM) remodeling between type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) mice, and to determine the impact of aerobic exercise training on CRM remodeling in diabetes. Eight week old male mice were divided into T1DM: control sedentary (Control-SD), T1DM sedentary (T1DM-SD) induced by streptozotocin, and T1DM exercise trained (T1DM-TR); T2DM: control sedentary (Db/db-SD), T2DM sedentary (db/db-SD), and T2DM trained (db/db-TR). Aerobic exercise training (TR) was performed on a mouse treadmill for 8weeks. CRMs were isolated and mounted on a pressure myograph to measure and record vascular remodeling and mechanics. CRM diameters, wall thickness, stress-strain, incremental modulus remained unchanged in T1DM-SD mice compared to control, and exercise training showed no effect. In contrast, CRMs isolated from db/db-SD mice exhibited decreased luminal diameter with thicker microvascular walls, which significantly increased the wall:lumen ratio (Db/db-SD: 5.8±0.3 vs. db/db-SD: 8.9±0.7, p<0.001). Compared to db/db-SD mice, coronary arterioles isolated from db/db-TR mice had similar internal diameter and wall thickness, while wall:lumen ratio (6.8±0.2, p<0.05) and growth index (db/db-SD: 16.2 vs. db/db-TR: 4.3, % over Db/db) were reduced. These data show that CRMs undergo adverse inward hypertrophic remodeling only in T2DM, but not T1DM, and that aerobic exercise training can partially mitigate this process.
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Affiliation(s)
- Aaron J Trask
- Center for Cardiovascular and Pulmonary Research, The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, OH 43205, USA.
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21
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22
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Trask AJ, Katz PS, Kelly AP, Galantowicz ML, Cismowski MJ, West TA, Neeb ZP, Berwick ZC, Goodwill AG, Alloosh M, Tune JD, Sturek M, Lucchesi PA. Dynamic micro- and macrovascular remodeling in coronary circulation of obese Ossabaw pigs with metabolic syndrome. J Appl Physiol (1985) 2012; 113:1128-40. [PMID: 22837170 DOI: 10.1152/japplphysiol.00604.2012] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Previous studies from our laboratory showed that coronary arterioles from type 2 diabetic mice undergo inward hypertrophic remodeling and reduced stiffness. The aim of the current study was to determine if coronary resistance microvessels (CRMs) in Ossabaw swine with metabolic syndrome (MetS) undergo remodeling distinct from coronary conduit arteries. Male Ossabaw swine were fed normal (n = 7, Lean) or hypercaloric high-fat (n = 7, MetS) diets for 6 mo, and then CRMs were isolated and mounted on a pressure myograph. CRMs isolated from MetS swine exhibited decreased luminal diameters (126 ± 5 and 105 ± 9 μm in Lean and MetS, respectively, P < 0.05) with thicker walls (18 ± 3 and 31 ± 3 μm in Lean and MetS, respectively, P < 0.05), which doubled the wall-to-lumen ratio (14 ± 2 and 30 ± 2 in Lean and MetS, respectively, P < 0.01). Incremental modulus of elasticity (IME) and beta stiffness index (BSI) were reduced in CRMs isolated from MetS pigs (IME: 3.6 × 10(6) ± 0.7 × 10(6) and 1.1 × 10(6) ± 0.2 × 10(6) dyn/cm(2) in Lean and MetS, respectively, P < 0.001; BSI: 10.3 ± 0.4 and 7.3 ± 1.8 in Lean and MetS, respectively, P < 0.001). BSI in the left anterior descending coronary artery was augmented in pigs with MetS. Structural changes were associated with capillary rarefaction, decreased hyperemic-to-basal coronary flow velocity ratio, and augmented myogenic tone. MetS CRMs showed a reduced collagen-to-elastin ratio, while immunostaining for the receptor for advanced glycation end products was selectively increased in the left anterior descending coronary artery. These data suggest that MetS causes hypertrophic inward remodeling of CRMs and capillary rarefaction, which contribute to decreased coronary flow and myocardial ischemia. Moreover, our data demonstrate novel differential remodeling between coronary micro- and macrovessels in a clinically relevant model of MetS.
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Affiliation(s)
- Aaron J Trask
- Center for Cardiovascular and Pulmonary Research, The Heart Center, The Research Institute at Nationwide Children's Hospital, 700 Children’s Drive, Columbus, OH 43205, USA.
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23
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Wold LE, Ying Z, Hutchinson KR, Velten M, Gorr MW, Velten C, Youtz DJ, Wang A, Lucchesi PA, Sun Q, Rajagopalan S. Cardiovascular remodeling in response to long-term exposure to fine particulate matter air pollution. Circ Heart Fail 2012; 5:452-61. [PMID: 22661498 DOI: 10.1161/circheartfailure.112.966580] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [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: 02/01/2023]
Abstract
BACKGROUND Air pollution is a pervasive environmental health hazard that occurs over a lifetime of exposure in individuals from many industrialized societies. However, studies have focused primarily on exposure durations that correspond to only a portion of the lifespan. We therefore tested the hypothesis that exposure over a considerable portion of the lifespan would induce maladaptive cardiovascular responses. METHODS AND RESULTS C57BL/6 male mice were exposed to concentrated ambient particles <2.5 µm (particulate matter, PM or PM(2.5)) or filtered air (FA), 6 h/d, 5 d/wk, for 9 months. Assessment of cardiac contractile function, coronary arterial flow reserve, isolated cardiomyocyte function, expression of hypertrophic markers, calcium handling proteins, and cardiac fibrosis were then performed. Mean daily concentrations of PM(2.5) in the exposure chamber versus ambient daily PM(2.5) concentration at the study site were 85.3 versus 10.6 µg/m(3) (7.8-fold concentration), respectively. PM(2.5) exposure resulted in increased hypertrophic markers leading to adverse ventricular remodeling characterized by myosin heavy chain (MHC) isoform switch and fibrosis, decreased fractional shortening (39.8 ± 1.4 FA versus 27.9 ± 1.3 PM, FS%), and mitral inflow patterns consistent with diastolic dysfunction (1.95 ± 0.05 FA versus 1.52 ± 0.07 PM, E/A ratio). Contractile reserve to dobutamine was depressed (62.3 ± 0.9 FA versus 49.2 ± 1.5 PM, FS%) in response to PM(2.5) without significant alterations in maximal vasodilator flow reserve. In vitro cardiomyocyte function revealed depressed peak shortening (8.7 ± 0.6 FA versus 7.0 ± 0.4 PM, %PS) and increased time-to-90% shortening (72.5 ± 3.2 FA versus 82.8 ± 3.2 PM, ms) and re-lengthening (253.1 ± 7.9 FA versus 282.8 ± 9.3 PM, ms), which were associated with upregulation of profibrotic markers and decreased total antioxidant capacity. Whole-heart SERCA2a levels and the ratio of α/β-MHC were both significantly decreased (P<0.05) in PM(2.5)-exposed animals, suggesting a switch to fetal programming. CONCLUSIONS Long-term exposure to environmentally relevant concentrations of PM(2.5) resulted in a cardiac phenotype consistent with incipient heart failure.
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Affiliation(s)
- Loren E Wold
- Center for Cardiovascular and Pulmonary Research, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics/Physiology and Cell Biology, The Ohio State University, 700 Children’s Drive, Columbus, OH 43205, USA.
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24
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Misra C, Sachan N, McNally CR, Koenig SN, Nichols HA, Guggilam A, Lucchesi PA, Pu WT, Srivastava D, Garg V. Congenital heart disease-causing Gata4 mutation displays functional deficits in vivo. PLoS Genet 2012; 8:e1002690. [PMID: 22589735 PMCID: PMC3349729 DOI: 10.1371/journal.pgen.1002690] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [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: 11/16/2011] [Accepted: 03/20/2012] [Indexed: 11/19/2022] Open
Abstract
Defects of atrial and ventricular septation are the most frequent form of congenital heart disease, accounting for almost 50% of all cases. We previously reported that a heterozygous G296S missense mutation of GATA4 caused atrial and ventricular septal defects and pulmonary valve stenosis in humans. GATA4 encodes a cardiac transcription factor, and when deleted in mice it results in cardiac bifida and lethality by embryonic day (E)9.5. In vitro, the mutant GATA4 protein has a reduced DNA binding affinity and transcriptional activity and abolishes a physical interaction with TBX5, a transcription factor critical for normal heart formation. To characterize the mutation in vivo, we generated mice harboring the same mutation, Gata4 G295S. Mice homozygous for the Gata4 G295S mutant allele have normal ventral body patterning and heart looping, but have a thin ventricular myocardium, single ventricular chamber, and lethality by E11.5. While heterozygous Gata4 G295S mutant mice are viable, a subset of these mice have semilunar valve stenosis and small defects of the atrial septum. Gene expression studies of homozygous mutant mice suggest the G295S protein can sufficiently activate downstream targets of Gata4 in the endoderm but not in the developing heart. Cardiomyocyte proliferation deficits and decreased cardiac expression of CCND2, a member of the cyclin family and a direct target of Gata4, were found in embryos both homozygous and heterozygous for the Gata4 G295S allele. To further define functions of the Gata4 G295S mutation in vivo, compound mutant mice were generated in which specific cell lineages harbored both the Gata4 G295S mutant and Gata4 null alleles. Examination of these mice demonstrated that the Gata4 G295S protein has functional deficits in early myocardial development. In summary, the Gata4 G295S mutation functions as a hypomorph in vivo and leads to defects in cardiomyocyte proliferation during embryogenesis, which may contribute to the development of congenital heart defects in humans. Cardiac malformations occur due to abnormal heart development and are the most prevalent human birth defect. Defects of atrial and ventricular septation are the most common type of congenital heart defect and are the result of incomplete closure of the atrial and ventricular septa, a process required for formation of a four-chambered heart. The molecular mechanisms that underlie atrial and ventricular septal defects are unknown. We previously published a highly penetrant autosomal dominant mutation (G296S) in GATA4, which was associated with atrial and ventricular septal defects in a large kindred. The disease-causing mutation has a spectrum of biochemical deficits affecting both DNA binding and protein–protein interactions. Here, we report the generation and phenotypic characterization of mice harboring the orthologous mutation in Gata4 (G295S). While homozygous mutant mice display embryonic lethality and cardiac defects, the phenotype is less severe than Gata4-null mice. A subset of Gata4 G295S heterozygote mice display a persistent interatrial communication (patent foramen ovale) and stenosis of the semilunar valves. Molecular characterization of the mutant mice suggests that the Gata4 G295S mutant protein results in diminished expression of Gata4 target genes in the heart and functional deficits in cardiomyocyte proliferation. Thus, cardiomyocyte proliferation defects may contribute to defects of cardiac septation found in humans with GATA4 mutations.
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Affiliation(s)
- Chaitali Misra
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
| | - Nita Sachan
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Caryn Rothrock McNally
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Sara N. Koenig
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
| | - Haley A. Nichols
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Anuradha Guggilam
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
| | - William T. Pu
- Department of Cardiology, Children's Hospital Boston and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Deepak Srivastava
- Gladstone Institute of Cardiovascular Disease, University of California San Francisco, San Francisco, California, United States of America
- Department of Pediatrics, University of California San Francisco, San Francisco, California, United States of America
- Department Biochemistry and Biophysics, University of California San Francisco, San Francisco, California, United States of America
| | - Vidu Garg
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
- Department of Molecular Genetics, The Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
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25
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Galantowicz ML, Guggilam A, Cismowski MJ, Zhang X, West TA, Lucchesi PA. Alterations in Left Ventricular Preload Dynamically Regulate Cardiac Fibroblast Signaling. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1060.17] [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: 11/11/2022]
Affiliation(s)
- Maarten L Galantowicz
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Anuradha Guggilam
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
- PediatricsThe Ohio State UniversityColumbusOH
| | - Mary J Cismowski
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
- PediatricsThe Ohio State UniversityColumbusOH
| | - Xiaojin Zhang
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Thomas A West
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Pamela A Lucchesi
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
- PediatricsThe Ohio State UniversityColumbusOH
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26
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Trask AJ, Delbin MA, Katz PS, Zanesco A, Lucchesi PA. Aerobic Exercise Training Partially Reverses Inward Hypertrophic Coronary Arteriole Remodeling in Type 2 Diabetic db/db Mice. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1138.21] [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: 11/11/2022]
Affiliation(s)
- Aaron J. Trask
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State University College of MedicineColumbusOH
| | - Maria A. Delbin
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Departamento de Educação FísicaUniversidade Estadual PaulistaRio ClaroBrazil
| | - Paige S. Katz
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Angelina Zanesco
- Departamento de Educação FísicaUniversidade Estadual PaulistaRio ClaroBrazil
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State University College of MedicineColumbusOH
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27
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Guggilam A, Galantowicz ML, West AT, Zhang X, Lucchesi PA. Cellular Mechanisms of Cardiac Dysfunction in Volume Overload Induced Heart Failure. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb662] [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: 11/11/2022]
Affiliation(s)
- Anuradha Guggilam
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at the Nationwide Children's HospitalColumbusOH
- PediatricsOhio State UniversityColumbusOH
| | - Maarten L Galantowicz
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at the Nationwide Children's HospitalColumbusOH
| | - Aaron T West
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at the Nationwide Children's HospitalColumbusOH
| | - Xiaojin Zhang
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at the Nationwide Children's HospitalColumbusOH
| | - Pamela A Lucchesi
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at the Nationwide Children's HospitalColumbusOH
- PediatricsOhio State UniversityColumbusOH
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Trask AJ, Katz PS, Kelly AP, Cismowski MJ, Galantowicz ML, Neeb ZP, Alloosh M, Sturek M, Lucchesi PA. Differential Stiffness between Resistance Microvessels and Conduit Arteries in the Coronary Circulation of Ossabaw Swine with Metabolic Syndrome. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1055.8] [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: 11/11/2022]
Affiliation(s)
- Aaron J. Trask
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State University College of MedicineColumbusOH
| | - Paige S. Katz
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Amy P. Kelly
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Mary J. Cismowski
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State University College of MedicineColumbusOH
| | - Maarten L. Galantowicz
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Zachary P. Neeb
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Mouhamad Alloosh
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Michael Sturek
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State University College of MedicineColumbusOH
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29
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Velten M, Hutchinson KR, Gorr MW, Wold LE, Lucchesi PA, Rogers LK. Systemic maternal inflammation and neonatal hyperoxia induces remodeling and left ventricular dysfunction in mice. PLoS One 2011; 6:e24544. [PMID: 21935422 PMCID: PMC3173376 DOI: 10.1371/journal.pone.0024544] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [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: 06/10/2011] [Accepted: 08/12/2011] [Indexed: 12/21/2022] Open
Abstract
AIMS The impact of the neonatal environment on the development of adult cardiovascular disease is poorly understood. Systemic maternal inflammation is linked to growth retardation, preterm birth, and maturation deficits in the developing fetus. Often preterm or small-for-gestational age infants require medical interventions such as oxygen therapy. The long-term pathological consequences of medical interventions on an immature physiology remain unknown. In the present study, we hypothesized that systemic maternal inflammation and neonatal hyperoxia exposure compromise cardiac structure, resulting in LV dysfunction during adulthood. METHODS AND RESULTS Pregnant C3H/HeN mice were injected on embryonic day 16 (E16) with LPS (80 µg/kg; i.p.) or saline. Offspring were placed in room air (RA) or 85% O(2) for 14 days and subsequently maintained in RA. Cardiac echocardiography, cardiomyocyte contractility, and molecular analyses were performed. Echocardiography revealed persistent lower left ventricular fractional shortening with greater left ventricular end systolic diameter at 8 weeks in LPS/O(2) than in saline/RA mice. Isolated cardiomyocytes from LPS/O(2) mice had slower rates of contraction and relaxation, and a slower return to baseline length than cardiomyocytes isolated from saline/RA controls. α-/β-MHC ratio was increased and Connexin-43 levels decreased in LPS/O(2) mice at 8 weeks. Nox4 was reduced between day 3 and 14 and capillary density was lower at 8 weeks of life in LPS/O(2) mice. CONCLUSION These results demonstrate that systemic maternal inflammation combined with neonatal hyperoxia exposure induces alterations in cardiac structure and function leading to cardiac failure in adulthood and supports the importance of the intrauterine and neonatal milieu on adult health.
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Affiliation(s)
- Markus Velten
- Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America.
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30
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Hutchinson KR, Guggilam A, Cismowski MJ, Galantowicz ML, West TA, Stewart JA, Zhang X, Lord KC, Lucchesi PA. Temporal pattern of left ventricular structural and functional remodeling following reversal of volume overload heart failure. J Appl Physiol (1985) 2011; 111:1778-88. [PMID: 21885799 DOI: 10.1152/japplphysiol.00691.2011] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Current surgical management of volume overload-induced heart failure (HF) leads to variable recovery of left ventricular (LV) function despite a return of LV geometry. The mechanisms that prevent restoration of function are unknown but may be related to the timing of intervention and the degree of LV contractile impairment. This study determined whether reduction of aortocaval fistula (ACF)-induced LV volume overload during the compensatory stage of HF results in beneficial LV structural remodeling and restoration of pump function. Rats were subjected to ACF for 4 wk; a subset then received a load-reversal procedure by closing the shunt using a custom-made stent graft approach. Echocardiography or in vivo pressure-volume analysis was used to assess LV morphology and function in sham rats; rats subjected to 4-, 8-, or 15-wk ACF; and rats subjected to 4-wk ACF followed by 4- or 11-wk reversal. Structural and functional changes were correlated to LV collagen content, extracellular matrix (ECM) proteins, and hypertrophic markers. ACF-induced volume overload led to progressive LV chamber dilation and contractile dysfunction. Rats subjected to short-term reversal (4-wk ACF + 4-wk reversal) exhibited improved chamber dimensions (LV diastolic dimension) and LV compliance that were associated with ECM remodeling and normalization of atrial and brain natriuretic peptides. Load-independent parameters indicated LV systolic (preload recruitable stroke work, Ees) and diastolic dysfunction (tau, arterial elastance). These changes were associated with an altered α/β-myosin heavy chain ratio. However, these changes were normalized to sham levels in long-term reversal rats (4-wk ACF + 11-wk reversal). Acute hemodynamic changes following ACF reversal improve LV geometry, but LV dysfunction persists. Gradual restoration of function was related to normalization of eccentric hypertrophy, LV wall stress, and ECM remodeling. These results suggest that mild to moderate LV systolic dysfunction may be an important indicator of the ability of the myocardium to remodel following the reversal of hemodynamic overload.
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Affiliation(s)
- Kirk R Hutchinson
- Center for Cardiovascular and Pulmonary Research, Research Institute at Nationwide Children's Hospital, Columbus, OH 43205, USA
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31
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Souza-Smith FM, Katz PS, Trask AJ, Stewart JA, Lord KC, Varner KJ, Vassallo DV, Lucchesi PA. Mesenteric resistance arteries in type 2 diabetic db/db mice undergo outward remodeling. PLoS One 2011; 6:e23337. [PMID: 21829729 PMCID: PMC3150429 DOI: 10.1371/journal.pone.0023337] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [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: 04/05/2011] [Accepted: 07/14/2011] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Resistance vessel remodeling is controlled by myriad of hemodynamic and neurohormonal factors. This study characterized structural and molecular remodeling in mesenteric resistance arteries (MRAs) in diabetic (db/db) and control (Db/db) mice. METHODS Structural properties were assessed in isolated MRAs from 12 and 16 wk-old db/db and Db/db mice by pressure myography. Matrix regulatory proteins were measured by Western blot analysis. Mean arterial pressure and superior mesenteric blood flow were measured in 12 wk-old mice by telemetry and a Doppler flow nanoprobe, respectively. RESULTS Blood pressure was similar between groups. Lumen diameter and medial cross-sectional area were significantly increased in 16 wk-old db/db MRA compared to control, indicating outward hypertrophic remodeling. Moreover, wall stress and cross-sectional compliance were significantly larger in diabetic arteries. These remodeling indices were associated with increased expression of matrix regulatory proteins matrix metalloproteinase (MMP)-9, MMP-12, tissue inhibitors of matrix metalloproteinase (TIMP)-1, TIMP-2, and plasminogen activator inhibitor-1 (PAI-1) in db/db arteries. Finally, superior mesenteric artery blood flow was increased by 46% in 12 wk-old db/db mice, a finding that preceded mesenteric resistance artery remodeling. CONCLUSIONS These data suggest that flow-induced hemodynamic changes may supersede the local neurohormonal and metabolic milieu to culminate in hypertrophic outward remodeling of type 2 DM mesenteric resistance arteries.
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Affiliation(s)
- Flavia M. Souza-Smith
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, Espirito Santo, Brazil
| | - Paige S. Katz
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
- Center for Cardiovascular and Pulmonary Research and The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
| | - Aaron J. Trask
- Center for Cardiovascular and Pulmonary Research and The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
| | - James A. Stewart
- Center for Cardiovascular and Pulmonary Research and The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
| | - Kevin C. Lord
- Feik School of Pharmacy, University of the Incarnate Word, San Antonio, Texas, United States of America
| | - Kurt J. Varner
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Dalton V. Vassallo
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, Espirito Santo, Brazil
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary Research and The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio, United States of America
- Department of Pediatrics, The Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
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32
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Katz PS, Trask AJ, Souza-Smith FM, Hutchinson KR, Galantowicz ML, Lord KC, Stewart JA, Cismowski MJ, Varner KJ, Lucchesi PA. Coronary arterioles in type 2 diabetic (db/db) mice undergo a distinct pattern of remodeling associated with decreased vessel stiffness. Basic Res Cardiol 2011; 106:1123-34. [PMID: 21744279 DOI: 10.1007/s00395-011-0201-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [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] [Received: 12/22/2010] [Revised: 06/09/2011] [Accepted: 06/28/2011] [Indexed: 12/23/2022]
Abstract
Little is known about the impact of type 2 diabetes mellitus (DM) on coronary arteriole remodeling. The aim of this study was to determine the mechanisms that underlie coronary arteriole structural remodeling in type 2 diabetic (db/db) mice. Passive structural properties of septal coronary arterioles isolated from 12- to 16-week-old diabetic db/db and control mice were assessed by pressure myography. Coronary arterioles from 12-week-old db/db mice were structurally similar to age-matched controls. By 16 weeks of age, coronary wall thickness was increased in db/db arterioles (p < 0.01), while luminal diameter was reduced (control: 118 ± 5 μm; db/db: 102 ± 4 μm, p < 0.05), augmenting the wall-to-lumen ratio by 58% (control: 5.9 ± 0.6; db/db: 9.5 ± 0.4, p < 0.001). Inward hypertrophic remodeling was accompanied by a 56% decrease in incremental elastic modulus (p < 0.05, indicating decreased vessel coronary wall stiffness) and a ~30% reduction in coronary flow reserve (CFR) in diabetic mice. Interestingly, aortic pulse wave velocity and femoral artery incremental elastic modulus were increased (p < 0.05) in db/db mice, indicating macrovascular stiffness. Molecular tissue analysis revealed increased elastin-to-collagen ratio in diabetic coronaries when compared to control and a decrease in the same ratio in the diabetic aortas. These data show that coronary arterioles isolated from type 2 diabetic mice undergo inward hypertrophic remodeling associated with decreased stiffness and increased elastin-to-collagen ratio which results in a decreased CFR. This study suggests that coronary microvessels undergo a different pattern of remodeling from macrovessels in type 2 DM.
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Affiliation(s)
- Paige S Katz
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA, USA
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33
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Trask AJ, Katz PS, Stewart JA, Lucchesi PA. Receptor for advanced glycation end products is involved in remodeling of diabetic coronary arterioles. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.1025.11] [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: 11/11/2022]
Affiliation(s)
- Aaron J Trask
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Paige S Katz
- Department of PhysiologyLouisiana State University Health Science CenterNew OrleansLA
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - James A Stewart
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | - Pamela A Lucchesi
- Center for Cardiovascular and Pulmonary ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
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34
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Guggilam A, Hutchinson KR, West TA, Galantowicz ML, Lord KC, Lucchesi PA. Changes in mechanical and electrical coupling affect cardiac function following volume overload reversal. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.1096.6] [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: 11/11/2022]
Affiliation(s)
- Anuradha Guggilam
- PediatricsOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Kirk R Hutchinson
- PharmacologyLSUHSCNew OrleansLA
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Thomas A West
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Maarten L Galantowicz
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Kevin C Lord
- Feik School of PharmacyUniversity of the Incarnate WordSan AntonioTX
| | - Pamela A Lucchesi
- PediatricsOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
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35
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Youtz DJ, Hutchinson KR, Velten M, Xu H, Gorr M, Lucchesi PA, McCarthy DO, Wold LE. Myocardial dysfunction in an animal model of cancer cachexia. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.1112.12] [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: 11/11/2022]
Affiliation(s)
- Dane J Youtz
- Center for Cardiovascular and Pulmonary Research
| | - Kirk R Hutchinson
- Department of Pharmacology and Experimental TherapeuticsLouisiana State University Health Sciences CenterNew OrleansLA
- Center for Cardiovascular and Pulmonary Research
| | - Markus Velten
- Center for Perinatal ResearchThe Research Institute at Nationwide Children's HospitalColumbusOH
| | | | - Matthew Gorr
- Center for Cardiovascular and Pulmonary Research
| | - Pamela A Lucchesi
- Department of PediatricsThe Ohio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary Research
| | | | - Loren E Wold
- Department of PediatricsThe Ohio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary Research
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36
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West TA, Galantowicz ML, Guggilam A, Hutchinson KR, Cismowski MJ, Lucchesi PA. Rapid changes in genes regulating cardiac remodeling following reversal of LV volume overload. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.1031.3] [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: 11/11/2022]
Affiliation(s)
- Thomas A West
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Maarten L Galantowicz
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Anuradha Guggilam
- PediatricsOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Kirk R Hutchinson
- PharmacologyLSUHSCNew OrleansLA
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Mary J Cismowski
- PediatricsOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Pamela A Lucchesi
- PediatricsOhio State UniversityColumbusOH
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
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37
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McAllister MC, Wold LE, Lucchesi PA. DEP‐Induced Changes Observed in Early‐stage Volume Overload Heart Failure Cardiomyocytes. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.1000.11] [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: 11/11/2022]
Affiliation(s)
| | - Loren E Wold
- Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
| | - Pamela A Lucchesi
- Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
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38
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Perez J, Torres RA, Rocic P, Cismowski MJ, Weber DS, Darley-Usmar VM, Lucchesi PA. PYK2 signaling is required for PDGF-dependent vascular smooth muscle cell proliferation. Am J Physiol Cell Physiol 2011; 301:C242-51. [PMID: 21451101 DOI: 10.1152/ajpcell.00315.2010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Aberrant vascular smooth muscle cell (VSMC) growth is associated with many vascular diseases including atherosclerosis, hypertension, and restenosis. Platelet-derived growth factor-BB (PDGF) induces VSMC proliferation through control of cell cycle progression and protein and DNA synthesis. Multiple signaling cascades control VSMC growth, including members of the mitogen-activated protein kinase (MAPK) family as well as phosphatidylinositol 3-kinase (PI3K) and its downstream effector AKT/protein kinase B (PKB). Little is known about how these signals are integrated by mitogens and whether there are common receptor-proximal signaling control points that synchronize the execution of physiological growth functions. The nonreceptor proline-rich tyrosine kinase 2 (PYK2) is activated by a variety of growth factors and G protein receptor agonists in VSMC and lies upstream of both PI3K and MAPK cascades. The present study investigated the role of PYK2 in PDGF signaling in cultured rat aortic VSMC. PYK2 downregulation attenuated PDGF-dependent protein and DNA synthesis, which correlated with inhibition of AKT and extracellular signal-regulated kinases 1 and 2 (ERK1/2) but not p38 MAPK activation. Inhibition of PDGF-dependent protein kinase B (AKT) and ERK1/2 signaling by inhibitors of upstream kinases PI3K and MEK, respectively, as well as downregulation of PYK2 resulted in modulation of the G(1)/S phase of the cell cycle through inhibition of retinoblastoma protein (Rb) phosphorylation and cyclin D(1) expression, as well as p27(Kip) upregulation. Cell division kinase 2 (cdc2) phosphorylation at G(2)/M was also contingent on PDGF-dependent PI3K-AKT and ERK1/2 signaling. These data suggest that PYK2 is an important upstream mediator in PDGF-dependent signaling cascades that regulate VSMC proliferation.
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Affiliation(s)
- Jessica Perez
- Department of Cell Biology, University of Alabama at Birmingham, Alabama, USA
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39
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Stewart JA, West TA, Lucchesi PA. Nitric oxide-induced collagen IV expression and angiogenesis: FAK or fiction? Focus on "Collagen IV contributes to nitric oxide-induced angiogenesis of lung endothelial cells". Am J Physiol Cell Physiol 2011; 300:C968-9. [PMID: 21389280 DOI: 10.1152/ajpcell.00059.2011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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Xu H, Crawford D, Hutchinson KR, Youtz DJ, Lucchesi PA, Velten M, McCarthy DO, Wold LE. Myocardial dysfunction in an animal model of cancer cachexia. Life Sci 2010; 88:406-10. [PMID: 21167183 DOI: 10.1016/j.lfs.2010.12.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 11/29/2010] [Accepted: 12/08/2010] [Indexed: 01/11/2023]
Abstract
AIMS Fatigue is a common occurrence in cancer patients regardless of tumor type or anti-tumor therapies and is an especially problematic symptom in persons with incurable tumor disease. In rodents, tumor-induced fatigue is associated with a progressive loss of skeletal muscle mass and increased expression of biomarkers of muscle protein degradation. The purpose of the present study was to determine if muscle wasting and expression of biomarkers of muscle protein degradation occur in the hearts of tumor-bearing mice, and if these effects of tumor growth are associated with changes in cardiac function. MAIN METHODS The colon26 adenocarcinoma cell line was implanted into female CD2F1 mice and skeletal muscle wasting, in vivo heart function, in vitro cardiomyocyte function, and biomarkers of muscle protein degradation were determined. KEY FINDINGS Expression of biomarkers of protein degradation were increased in both the gastrocnemius and heart muscle of tumor-bearing mice and caused systolic dysfunction in vivo. Cardiomyocyte function was significantly depressed during both cellular contraction and relaxation. SIGNIFICANCE These results suggest that heart muscle is directly affected by tumor growth, with myocardial function more severely compromised at the cellular level than what is observed using echocardiography.
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Affiliation(s)
- Hui Xu
- College of Nursing, The Ohio State University, United States
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41
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Bevan AK, Hutchinson KR, Foust KD, Braun L, McGovern VL, Schmelzer L, Ward JG, Petruska JC, Lucchesi PA, Burghes AHM, Kaspar BK. Early heart failure in the SMNDelta7 model of spinal muscular atrophy and correction by postnatal scAAV9-SMN delivery. Hum Mol Genet 2010; 19:3895-905. [PMID: 20639395 DOI: 10.1093/hmg/ddq300] [Citation(s) in RCA: 164] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Proximal spinal muscular atrophy (SMA) is a debilitating neurological disease marked by isolated lower motor neuron death and subsequent atrophy of skeletal muscle. Historically, SMA pathology was thought to be limited to lower motor neurons and the skeletal muscles they control, yet there are several reports describing the coincidence of cardiovascular abnormalities in SMA patients. As new therapies for SMA emerge, it is necessary to determine whether these non-neuromuscular systems need to be targeted. Therefore, we have characterized left ventricular (LV) function of SMA mice (SMN2+/+; SMNΔ7+/+; Smn-/-) and compared it with that of their unaffected littermates at 7 and 14 days of age. Anatomical and physiological measurements made by electrocardiogram and echocardiography show that affected mouse pups have a dramatic decrease in cardiac function. At 14 days of age, SMA mice have bradycardia and develop a marked dilated cardiomyopathy with a concomitant decrease in contractility. Signs of decreased cardiac function are also apparent as early as 7 days of age in SMA animals. Delivery of a survival motor neuron-1 transgene using a self-complementary adeno-associated virus serotype 9 abolished the symptom of bradycardia and significantly decreased the severity of the heart defect. We conclude that severe SMA animals have compromised cardiac function resulting at least partially from early bradycardia, which is likely attributable to aberrant autonomic signaling. Further cardiographic studies of human SMA patients are needed to clarify the clinical relevance of these findings from this SMA mouse.
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Affiliation(s)
- Adam K Bevan
- Department of Gene Therapy, The Research Institute, Nationwide Children’s Hospital, Columbus, OH 43205, USA
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42
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Monreal G, Youtz DJ, Phillips AB, Eyman ME, Gorr MW, Velten C, Lucchesi PA, Wold LE, Gerhardt MA. Right ventricular remodeling in restrictive ventricular septal defect. J Mol Cell Cardiol 2010; 49:699-706. [PMID: 20637777 DOI: 10.1016/j.yjmcc.2010.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [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] [Received: 05/23/2010] [Revised: 06/18/2010] [Accepted: 07/07/2010] [Indexed: 02/04/2023]
Abstract
Restrictive ventricular septal defect (rVSD) presents with little/no hemodynamic aberrations despite a patent septal defect. Clinically, these patients are observed with the hope that the defect will functionally close over time without the need for surgical repair and development of heart failure. Without evidence supporting a definitive therapeutic strategy, rVSD patients may have increased risk of a poor outcome. We tested the hypothesis that rVSD results in subclinical RV diastolic dysfunction and molecular remodeling. Five pigs underwent surgical rVSD creation. Echocardiography, hemodynamics, myocyte contractility experiments, and proteomics/Western blot were performed 6-weeks post-rVSD and in controls. *p<0.05. LV and RV hemodynamics in rVSD were comparable to controls. The tricuspid valve early/late diastolic inflow velocity ratio (TV E/A ratio) decreased from 1.6+/-0.05 in controls to 1.0+/-0.08* in rVSD, indicating RV diastolic dysfunction. rVSD RV myocytes showed abnormalities in contraction (departure velocity (Vd) -51%*, Vd time +55%*) and relaxation (return velocity (Vr) -50%*, Vr time +62%*). Mitochondrial proteins (fatty acid, TCA cycle) increased 2-fold*, indicating heightened RV work. Desmin protein upregulated 285%* in rVSD RV myocardium, suggesting cytoskeletal remodeling. rVSD causes RV diastolic dysfunction, myocyte functional impairment, and mitochondrial/cytoskeletal protein upregulation in our model. Desmin upregulation may hinder sarcomeric organization/relaxation, representing a key subclinical early marker for future RV dysfunction. TV E/A measurements are a non-invasive modality to assess rVSD patients for diastolic dysfunction. Translational research applications may lead to fundamental changes in the clinical management of rVSD by providing evidence for early repair of the defect.
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Affiliation(s)
- Gretel Monreal
- Department of Anesthesiology, The Ohio State University, Columbus, OH, USA
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43
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Trask AJ, Katz PS, Neeb ZP, Alloosh M, Sturek M, Lucchesi PA. Coronary artery microvascular narrowing downstream of stent implantation. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.789.6] [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: 11/11/2022]
Affiliation(s)
- Aaron J. Trask
- Center for Cardiovascular and Pulmonary Research and The Heart CenterNationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
| | - Paige S. Katz
- Center for Cardiovascular and Pulmonary Research and The Heart CenterNationwide Children's HospitalColumbusOH
- Department of PhysiologyLouisiana State University Health Sciences CenterNew OrleansLA
| | - Zachary P. Neeb
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Mouhamad Alloosh
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Michael Sturek
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary Research and The Heart CenterNationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
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Katz PS, Trask AJ, Lucchesi PA. Progressive Coronary Artery Remodeling in Diabetic db/db Mice. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.790.9] [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: 11/11/2022]
Affiliation(s)
- Paige Shattuck Katz
- Center for Cardiovascular and Pulmonary Research & The Heart CenterThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PhysiologyLouisiana State Health Sciences CenterNew OrleansLA
| | - Aaron J. Trask
- Center for Cardiovascular and Pulmonary Research & The Heart CenterThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary Research & The Heart CenterThe Research Institute at Nationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
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Trask AJ, Katz PS, Neeb ZP, Alloosh M, Sturek M, Lucchesi PA. Inward coronary artery microvessel remodeling in Ossabaw swine with metabolic syndrome. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.789.3] [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: 11/11/2022]
Affiliation(s)
- Aaron J. Trask
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
| | - Paige S. Katz
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
- Department of PhysiologyLouisiana State University Health Sciences CenterNew OrleansLA
| | - Zachary P. Neeb
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Mouhamad Alloosh
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Michael Sturek
- Department of Cellular and Integrative PhysiologyIndiana University School of MedicineIndianapolisIN
| | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary ResearchNationwide Children's HospitalColumbusOH
- Department of PediatricsThe Ohio State UniversityColumbusOH
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Lord KC, Shenouda SK, McIlwain E, Charalampidis D, Lucchesi PA, Varner KJ. Oxidative stress contributes to methamphetamine-induced left ventricular dysfunction. Cardiovasc Res 2010; 87:111-8. [PMID: 20139112 DOI: 10.1093/cvr/cvq043] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [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: 01/19/2023] Open
Abstract
AIMS Our aim was to test the hypothesis that the repeated, binge administration of methamphetamine would produce oxidative stress in the myocardium leading to structural remodeling and impaired left ventricular function. METHODS AND RESULTS Echocardiography and Millar pressure-volume catheters were used to monitor left ventricular structure and function in rats subjected to four methamphetamine binges (3 mg/kg, iv for 4 days, separated by a 10-day drug-free period). Hearts from treated and control rats were used for histological or proteomic analysis. When compared with saline treatment, four methamphetamine binges produced eccentric left ventricular hypertrophy. The drug also significantly impaired systolic function (decreased fractional shortening, ejection fraction, and adjusted maximal power) and produced significant diastolic dysfunction (increased -dP/dt and tau). Dihydroethedium staining showed that methamphetamine significantly increased (285%) the levels of reactive oxygen species in the left ventricle. Treatment with methamphetamine also resulted in the tyrosine nitration of myofilament (desmin, myosin light chain) and mitochondrial (ATP synthase, NADH dehydrogenase, cytochrome c oxidase, prohibitin) proteins. Treatment with the superoxide dismutase mimetic, tempol in the drinking water prevented methamphetamine-induced left ventricular dilation and systolic dysfunction; however, tempol (2.5 mM) did not prevent the diastolic dysfunction. Tempol significantly reduced, but did not eliminate dihydroethedium staining in the left ventricle, nor did it prevent the tyrosine nitration of mitochondrial and contractile proteins. CONCLUSION This study shows that oxidative stress plays a significant role in mediating methamphetamine-induced eccentric left ventricular dilation and systolic dysfunction.
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Affiliation(s)
- Kevin C Lord
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Science Center, 1901 Perdido Street, New Orleans, LA 70112, USA
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Hutchinson KR, Stewart JA, Lucchesi PA. Extracellular matrix remodeling during the progression of volume overload-induced heart failure. J Mol Cell Cardiol 2009; 48:564-9. [PMID: 19524591 DOI: 10.1016/j.yjmcc.2009.06.001] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2009] [Revised: 05/28/2009] [Accepted: 06/02/2009] [Indexed: 11/17/2022]
Abstract
Volume overload-induced heart failure results in progressive left ventricular remodeling characterized by chamber dilation, eccentric cardiac myocyte hypertrophy and changes in extracellular matrix (ECM) remodeling changes. The ECM matrix scaffold is an important determinant of the structural integrity of the myocardium and actively participates in force transmission across the LV wall. In response to this hemodynamic overload, the ECM undergoes a distinct pattern of remodeling that differs from pressure overload. Once thought to be a static entity, the ECM is now regarded to be a highly adaptive structure that is dynamically regulated by mechanical stress, neurohormonal activation, inflammation and oxidative stress, that result in alterations in collagen and other matrix components and a net change in matrix metalloproteinase (MMP) expression and activation. These changes dictate overall ECM turnover during volume overload hear failure progression. This review will discuss the cellular and molecular mechanisms that dictate the temporal patterns of ECM remodeling during heart disease progression.
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Affiliation(s)
- Kirk R Hutchinson
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA, USA
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Souza FM, Katz PS, Stewart JA, Vassallo DV, Lucchesi PA. Vascular Remodeling of Mesenteric Resistance Arteries in Diabetic Mice. FASEB J 2009. [DOI: 10.1096/fasebj.23.1_supplement.990.19] [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: 11/11/2022]
Affiliation(s)
| | | | - James A. Stewart
- Center for Cardiovascular and Pulmonary Research The Research Institute at Nationwide Children's Hos, OSUColumbusOH
| | | | - Pamela A. Lucchesi
- Center for Cardiovascular and Pulmonary Research The Research Institute at Nationwide Children's Hos, OSUColumbusOH
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Affiliation(s)
| | | | - Pamela A. Lucchesi
- Cardiovascular and Pulmonary Research CenterNationwide Children's HospitalColumbusOH
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