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Liu Y, Shao YH, Zhang JM, Wang Y, Zhou M, Li HQ, Zhang CC, Yu PJ, Gao SJ, Wang XR, Jia LX, Piao CM, Du J, Li YL. Macrophage CARD9 mediates cardiac injury following myocardial infarction through regulation of lipocalin 2 expression. Signal Transduct Target Ther 2023; 8:394. [PMID: 37828006 PMCID: PMC10570328 DOI: 10.1038/s41392-023-01635-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 08/15/2023] [Accepted: 08/31/2023] [Indexed: 10/14/2023] Open
Abstract
Immune cell infiltration in response to myocyte death regulates extracellular matrix remodeling and scar formation after myocardial infarction (MI). Caspase-recruitment domain family member 9 (CARD9) acts as an adapter that mediates the transduction of pro-inflammatory signaling cascades in innate immunity; however, its role in cardiac injury and repair post-MI remains unclear. We found that Card9 was one of the most upregulated Card genes in the ischemic myocardium of mice. CARD9 expression increased considerably 1 day post-MI and declined by day 7 post-MI. Moreover, CARD9 was mainly expressed in F4/80-positive macrophages. Card9 knockout (KO) led to left ventricular function improvement and infarct scar size reduction in mice 28 days post-MI. Additionally, Card9 KO suppressed cardiomyocyte apoptosis in the border region and attenuated matrix metalloproteinase (MMP) expression. RNA sequencing revealed that Card9 KO significantly suppressed lipocalin 2 (Lcn2) expression post-MI. Both LCN2 and the receptor solute carrier family 22 member 17 (SL22A17) were detected in macrophages. Subsequently, we demonstrated that Card9 overexpression increased LCN2 expression, while Card9 KO inhibited necrotic cell-induced LCN2 upregulation in macrophages, likely through NF-κB. Lcn2 KO showed beneficial effects post-MI, and recombinant LCN2 diminished the protective effects of Card9 KO in vivo. Lcn2 KO reduced MMP9 post-MI, and Lcn2 overexpression increased Mmp9 expression in macrophages. Slc22a17 knockdown in macrophages reduced MMP9 release with recombinant LCN2 treatment. In conclusion, our results demonstrate that macrophage CARD9 mediates the deterioration of cardiac function and adverse remodeling post-MI via LCN2.
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Affiliation(s)
- Yan Liu
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Yi-Hui Shao
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Jun-Meng Zhang
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Ying Wang
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Mei Zhou
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Hui-Qin Li
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Cong-Cong Zhang
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Pei-Jie Yu
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Shi-Juan Gao
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Xue-Rui Wang
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Li-Xin Jia
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Chun-Mei Piao
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Jie Du
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China
| | - Yu-Lin Li
- Beijing Anzhen Hospital, Capital Medical University; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Ministry of Education; Beijing Collaborative Innovative Research Center for Cardiovascular Diseases; Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, 100029, China.
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Pearce DP, Nemcek MT, Witzenburg CM. Don't go breakin' my heart: cardioprotective alterations to the mechanical and structural properties of reperfused myocardium during post-infarction inflammation. Biophys Rev 2023; 15:329-353. [PMID: 37396449 PMCID: PMC10310682 DOI: 10.1007/s12551-023-01068-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 05/21/2023] [Indexed: 07/04/2023] Open
Abstract
Myocardial infarctions (MIs) kickstart an intense inflammatory response resulting in extracellular matrix (ECM) degradation, wall thinning, and chamber dilation that leaves the heart susceptible to rupture. Reperfusion therapy is one of the most effective strategies for limiting adverse effects of MIs, but is a challenge to administer in a timely manner. Late reperfusion therapy (LRT; 3 + hours post-MI) does not limit infarct size, but does reduce incidences of post-MI rupture and improves long-term patient outcomes. Foundational studies employing LRT in the mid-twentieth century revealed beneficial reductions in infarct expansion, aneurysm formation, and left ventricle dysfunction. The mechanism by which LRT acts, however, is undefined. Structural analyses, relying largely on one-dimensional estimates of ECM composition, have found few differences in collagen content between LRT and permanently occluded animal models when using homogeneous samples from infarct cores. Uniaxial testing, on the other hand, revealed slight reductions in stiffness early in inflammation, followed soon after by an enhanced resistance to failure for cases of LRT. The use of one-dimensional estimates of ECM organization and gross mechanical function have resulted in a poor understanding of the infarct's spatially variable mechanical and structural anisotropy. To resolve these gaps in literature, future work employing full-field mechanical, structural, and cellular analyses is needed to better define the spatiotemporal post-MI alterations occurring during the inflammatory phase of healing and how they are impacted following reperfusion therapy. In turn, these studies may reveal how LRT affects the likelihood of rupture and inspire novel approaches to guide scar formation.
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Affiliation(s)
- Daniel P. Pearce
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706 USA
| | - Mark T. Nemcek
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706 USA
| | - Colleen M. Witzenburg
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706 USA
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3
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Bräuninger H, Krüger S, Bacmeister L, Nyström A, Eyerich K, Westermann D, Lindner D. Matrix metalloproteinases in coronary artery disease and myocardial infarction. Basic Res Cardiol 2023; 118:18. [PMID: 37160529 PMCID: PMC10169894 DOI: 10.1007/s00395-023-00987-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/11/2023]
Abstract
Cardiovascular diseases (CVDs) remain the leading cause of death worldwide. Most cardiovascular deaths are caused by ischaemic heart diseases such as myocardial infarction (MI). Hereby atherosclerosis in the coronary arteries often precedes disease manifestation. Since tissue remodelling plays an important role in the development and progression of atherosclerosis as well as in outcome after MI, regulation of matrix metalloproteinases (MMPs) as the major ECM-degrading enzymes with diverse other functions is crucial. Here, we provide an overview of the expression profiles of MMPs in coronary artery and left ventricular tissue using publicly available data from whole tissue to single-cell resolution. To approach an association between MMP expression and the development and outcome of CVDs, we further review studies investigating polymorphisms in MMP genes since polymorphisms are known to have an impact on gene expression. This review therefore aims to shed light on the role of MMPs in atherosclerosis and MI by summarizing current knowledge from publically available datasets, human studies, and analyses of polymorphisms up to preclinical and clinical trials of pharmacological MMP inhibition.
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Affiliation(s)
- Hanna Bräuninger
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Side Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Saskia Krüger
- Clinic for Cardiology, University Heart and Vascular Centre Hamburg, Hamburg, Germany
| | - Lucas Bacmeister
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Alexander Nyström
- Department of Dermatology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Kilian Eyerich
- Department of Dermatology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Dirk Westermann
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany
| | - Diana Lindner
- Department of Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106, Freiburg, Germany.
- German Centre for Cardiovascular Research (DZHK), Partner Side Hamburg/Kiel/Lübeck, Hamburg, Germany.
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4
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Chen H, Chen S, Ye H, Guo X. Protective Effects of Circulating TIMP3 on Coronary Artery Disease and Myocardial Infarction: A Mendelian Randomization Study. J Cardiovasc Dev Dis 2022; 9:jcdd9080277. [PMID: 36005441 PMCID: PMC9410056 DOI: 10.3390/jcdd9080277] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/07/2022] [Accepted: 08/09/2022] [Indexed: 12/15/2022] Open
Abstract
Tissue inhibitor of metalloproteinase 3 (TIMP3) is a protease with high expression levels in the heart and plays an essential role in extracellular matrix turnover by maintaining equilibrium with matrix metalloproteinases. Considerable data in experimental models have demonstrated a protective role of TIMP3 in coronary artery disease (CAD) and myocardial infarction (MI). However, causality remains unexplored in population studies. Here, we sought to decipher the potential causality between TIMP3 and CAD/MI using the Mendelian randomization (MR) method. We extracted summary−level datasets for TIMP3 and CAD/MI from the genome−wide association studies performed in the KORA study and CARDIoGRAMplusC4D consortium, respectively. Seven independent SNPs were obtained as instrumental variables for TIMP3. The MR analyses were replicated using FinnGen datasets, and the main results were combined in meta−analyses. Elevated genetically predicted serum TIMP3 levels were causally associated with a lower risk of CAD [odds ratio (OR), 0.97; 95% confidence interval (CI), 0.95, 0.98; p = 5.29 × 10−5] and MI (OR, 0.96; 95% CI, 0.95, 0.98; p = 3.85 × 10−5). The association patterns persisted in the meta−analyses combining the different datasets (CAD: OR, 0.97; 95% CI, 0.96, 0.99; p = 4.37 × 10−5; MI: OR, 0.97; 95% CI, 0.96, 0.99; p = 9.96 × 10−5) and was broadly consistent across a set of complementary analyses. Evidence of heterogeneity and horizontal pleiotropy was limited for all associations considered. In conclusion, this MR study supports inverse causal associations between serum TIMP3 and the risk of CAD and MI. Strategies for raising TIMP3 levels may offer new avenues for the prevention strategies of atherosclerotic cardiovascular diseases.
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Affiliation(s)
- Heng Chen
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou 310003, China
| | - Siyuan Chen
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou 310003, China
| | - Hengni Ye
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310003, China
| | - Xiaogang Guo
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou 310003, China
- Correspondence:
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5
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Large Animal Models of Cell-Free Cardiac Regeneration. Biomolecules 2020; 10:biom10101392. [PMID: 33003617 PMCID: PMC7600588 DOI: 10.3390/biom10101392] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 09/23/2020] [Accepted: 09/27/2020] [Indexed: 12/13/2022] Open
Abstract
The adult mammalian heart lacks the ability to sufficiently regenerate itself, leading to the progressive deterioration of function and heart failure after ischemic injuries such as myocardial infarction. Thus far, cell-based therapies have delivered unsatisfactory results, prompting the search for cell-free alternatives that can induce the heart to repair itself through cardiomyocyte proliferation, angiogenesis, and advantageous remodeling. Large animal models are an invaluable step toward translating basic research into clinical applications. In this review, we give an overview of the state-of-the-art in cell-free cardiac regeneration therapies that have been tested in large animal models, mainly pigs. Cell-free cardiac regeneration therapies involve stem cell secretome- and extracellular vesicles (including exosomes)-induced cardiac repair, RNA-based therapies, mainly regarding microRNAs, but also modified mRNA (modRNA) as well as other molecules including growth factors and extracellular matrix components. Various methods for the delivery of regenerative substances are used, including adenoviral vectors (AAVs), microencapsulation, and microparticles. Physical stimulation methods and direct cardiac reprogramming approaches are also discussed.
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6
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Lobb DC, Doviak H, Brower GL, Romito E, O'Neill JW, Smith S, Shuman JA, Freels PD, Zellars KN, Freeburg LA, Khakoo AY, Lee T, Spinale FG. Targeted Injection of a Truncated Form of Tissue Inhibitor of Metalloproteinase 3 Alters Post-Myocardial Infarction Remodeling. J Pharmacol Exp Ther 2020; 375:296-307. [PMID: 32958629 DOI: 10.1124/jpet.120.000047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 08/18/2020] [Indexed: 12/28/2022] Open
Abstract
Infarct expansion can occur after myocardial infarction (MI), which leads to adverse left ventricular (LV) remodeling and failure. An imbalance between matrix metalloproteinase (MMP) induction and tissue inhibitors of MMPs (TIMPs) can accelerate this process. Past studies have shown different biologic effects of TIMP-3, which may depend upon specific domains within the TIMP-3 molecule. This study tested the hypothesis that differential effects of direct myocardial injections of either a full-length recombinant TIMP-3 (F-TIMP-3) or a truncated form encompassing the N-terminal region (N-TIMP-3) could be identified post-MI. MI was induced in pigs that were randomized for MI injections (30 mg) and received targeted injections within the MI region of F-TIMP-3 (n = 8), N-TIMP-3 (n = 9), or saline injection (MI-only, n = 11). At 14 days post-MI, LV ejection fraction fell post-MI but remained higher in both TIMP-3 groups. Tumor necrosis factor and interleukin-10 mRNA increased by over 10-fold in the MI-only and N-TIMP-3 groups but were reduced with F-TIMP-3 at this post-MI time point. Direct MI injection of either a full-length or truncated form of TIMP-3 is sufficient to favorably alter the course of post-MI remodeling. The functional and differential relevance of TIMP-3 domains has been established in vivo since the TIMP-3 constructs demonstrated different MMP/cytokine expression profiles. These translational studies identify a unique and more specific therapeutic strategy to alter the course of LV remodeling and dysfunction after MI. SIGNIFICANCE STATEMENT: Using different formulations of tissue inhibitor of matrix metalloproteinase-3 (TIMP-3), when injected into the myocardial infarction (MI) region, slowed the progression of indices of left ventricular (LV) failure, suggesting that the N terminus of TIMP-3 is sufficient to attenuate early adverse functional events post-MI. Injections of full-length recombinant TIMP-3, but not of the N-terminal region of TIMP-3, reduced relative indices of inflammation at the mRNA level, suggesting that the C-terminal region affects other biological pathways. These unique proof-of-concept studies demonstrate the feasibility of using recombinant small molecules to selectively interrupt adverse LV remodeling post-MI.
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Affiliation(s)
- David C Lobb
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Heather Doviak
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Gregory L Brower
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Eva Romito
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Jason W O'Neill
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Stephen Smith
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - James A Shuman
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Parker D Freels
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Kia N Zellars
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Lisa A Freeburg
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Aarif Y Khakoo
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - TaeWeon Lee
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
| | - Francis G Spinale
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the WJB Dorn Veteran Affairs Medical Center, Columbia, South Carolina (D.C.L., H.D., G.L.B., E.R., J.A.S., P.D.F., K.N.Z., L.A.F., F.G.S.) and Amgen, Metabolic Disorders, South San Francisco, California (J.W.O., S.S., A.Y.K., T.L.)
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7
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Ushakov A, Ivanchenko V, Gagarina A. Regulation of Myocardial Extracellular Matrix Dynamic Changes in Myocardial Infarction and Postinfarct Remodeling. Curr Cardiol Rev 2020; 16:11-24. [PMID: 31072294 PMCID: PMC7393593 DOI: 10.2174/1573403x15666190509090832] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 04/22/2019] [Accepted: 04/29/2019] [Indexed: 02/07/2023] Open
Abstract
The article represents literature review dedicated to molecular and cellular mechanisms underlying clinical manifestations and outcomes of acute myocardial infarction. Extracellular matrix adaptive changes are described in detail as one of the most important factors contributing to healing of damaged myocardium and post-infarction cardiac remodeling. Extracellular matrix is reviewed as dynamic constantly remodeling structure that plays a pivotal role in myocardial repair. The role of matrix metalloproteinases and their tissue inhibitors in fragmentation and degradation of extracellular matrix as well as in myocardium healing is discussed. This review provides current information about fibroblasts activity, the role of growth factors, particularly transforming growth factor β and cardiotrophin-1, colony-stimulating factors, adipokines and gastrointestinal hormones, various matricellular proteins. In conclusion considering the fact that dynamic transformation of extracellular matrix after myocardial ischemic damage plays a pivotal role in myocardial infarction outcomes and prognosis, we suggest a high importance of further investigation of mechanisms underlying extracellular matrix remodeling and cell-matrix interactions in cardiovascular diseases.
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Affiliation(s)
- Alexey Ushakov
- Department of Internal Medicine #1 with Clinical Pharmacology Course, Medical Academy named after S.I. Georgievsky of V.I. Vernadsky Crimean Federal University, Simferopol, Russian Federation
| | - Vera Ivanchenko
- Department of Internal Medicine #1 with Clinical Pharmacology Course, Medical Academy named after S.I. Georgievsky of V.I. Vernadsky Crimean Federal University, Simferopol, Russian Federation
| | - Alina Gagarina
- Department of Internal Medicine #1 with Clinical Pharmacology Course, Medical Academy named after S.I. Georgievsky of V.I. Vernadsky Crimean Federal University, Simferopol, Russian Federation
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8
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Fan Z, Xu Z, Niu H, Sui Y, Li H, Ma J, Guan J. Spatiotemporal delivery of basic fibroblast growth factor to directly and simultaneously attenuate cardiac fibrosis and promote cardiac tissue vascularization following myocardial infarction. J Control Release 2019; 311-312:233-244. [PMID: 31521744 DOI: 10.1016/j.jconrel.2019.09.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/16/2019] [Accepted: 09/05/2019] [Indexed: 12/15/2022]
Abstract
Following myocardial infarction (MI), the destruction of vasculature in the infarcted heart muscle and progression of cardiac fibrosis lead to cardiac function deterioration. Vascularization of the damaged tissue and prevention of cardiac fibrosis represent promising strategies to improve cardiac function. Herein we have developed a bFGF release system with suitable release kinetics to simultaneously achieve the two goals. The release system was based on an injectable, thermosensitive, and fast gelation hydrogel and bFGF. The hydrogel had gelation time <7 s. It can quickly solidify upon injection into tissue so as to increase drug retention in the tissue. Hydrogel complex modulus can be tuned by hydrogel solution concentration. The complex modulus of 176.6 Pa and lower allowed cardiac fibroblast to maintain its phenotype. Bioactive bFGF was able to gradually release from the hydrogel for 4 weeks. The released bFGF promoted cardiac fibroblast survival under ischemic conditions mimicking those of the infarcted hearts. It also attenuated cardiac fibroblasts from differentiating into myofibroblasts in the presence of TGFβ when tested in 3D collagen model mimicking the scenario when the bFGF release system was injected into hearts. Furthermore, the released bFGF stimulated human umbilical endothelial cells to form endothelial lumen. After 4 weeks of implantation into infarcted hearts, the bFGF release system significantly increased blood vessel density, decreased myofibroblast density and collagen content, augmented cardiac cell survival/proliferation, and reduced macrophage density. In addition, the bFGF release system significantly increased cardiac function. These results demonstrate that delivery of bFGF with appropriate release kinetics alone may represent an efficient approach to control cardiac remodeling after MI.
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Affiliation(s)
- Zhaobo Fan
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, United States of America
| | - Zhaobin Xu
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, United States of America
| | - Hong Niu
- Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Yang Sui
- Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO 63130, USA
| | - Haichang Li
- Department of Surgery, The Ohio State University, Columbus, OH 43210, United States of America
| | - Jianjie Ma
- Department of Surgery, The Ohio State University, Columbus, OH 43210, United States of America
| | - Jianjun Guan
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, United States of America; Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, MO 63130, USA.
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9
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Abstract
Matrix metalloproteinases (MMPs) and their endogenous inhibitors have been studied in the myocardium for the past 2 decades. An incomplete knowledge base and experimental design issues with inhibitors have hampered attempts at translation, but clinical interest remains high because of strong associations between MMPs and outcomes after myocardial infarction (MI) as well as mechanistic studies showing MMP involvement at multiple stages of the MI wound-healing process. This Review focuses on how our understanding of MMPs has evolved from a one-dimensional early focus on measuring MMP activity, monitoring MMP:inhibitor ratios, and evaluating one MMP-substrate pair to the current use of systems biology approaches to integrate the whole MMP repertoire of roles in the left ventricular response to MI. MMP9 is used as an example MMP to explain these concepts and to provide a template for examining MMPs as mechanistic mediators of cardiac remodelling.
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Affiliation(s)
- Merry L Lindsey
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS, USA. .,Research Service,, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, USA.
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10
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Li W, Zhang F, Ju C, Lv S, Huang K. The role of CD27-CD70 signaling in myocardial infarction and cardiac remodeling. Int J Cardiol 2018; 278:210-216. [PMID: 30527529 DOI: 10.1016/j.ijcard.2018.11.132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/16/2018] [Accepted: 11/28/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND CD4+ T cells are key players in regulating the inflammatory processes and physiological repair mechanisms engaged after acute myocardial infarction (AMI). Although signaling through the CD27-CD70 co-stimulatory pathway are known to be important in CD4+ T cell activation and proliferation in certain contexts, the role of the CD27-CD70 pathway in AMI remains unclear. METHODS AND RESULTS A total of 43 control subjects, 42 unstable angina patients, and 90 AMI patients were enrolled in the present study. The serum levels of soluble CD27 (sCD27) in patients were measured, revealing a significant increase in serum sCD27 levels in AMI patients within 24 h of the cardiac event, after which they decreased. Correlation analyses revealed that serum sCD27 was positively correlated with cardiac troponin I (c-TnI) (r = 0.267, P = 0.011). When anti-CD70 antibody was used to block the CD27-CD70 pathway in MI model mice, we found that this treatment increased left ventricular end-diastolic dimension (LVEDD) (P < 0.01) and left ventricular end-systolic dimension (LVESD) (P < 0.01), and decreased ejection fraction (P < 0.01). Flow cytometric analysis revealed that the percentage of regulatory T cells was lower in blocking antibody-treated mice (P < 0.01), while neutrophils levels were higher (P < 0.01). The number of CD31-positive endothelial cells (P = 0.026) and α-smooth muscle actin-positive arterioles (P < 0.01) were significantly down-regulated in anti-CD70 treated-AMI mice. The formation of the extracellular matrix (ECM) was also impaired. CONCLUSION Serum sCD27 may be a potential biomarker for AMI. Blockade of the CD27-CD70 pathway worsens cardiac dysfunction, aggravates left ventricular remodeling, and impairs scar healing after AMI, resulting in heart failure.
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Affiliation(s)
- Wei Li
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fengxiao Zhang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chenhui Ju
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Suying Lv
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Huang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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11
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Lyngbakken MN, Myhre PL, Røsjø H, Omland T. Novel biomarkers of cardiovascular disease: Applications in clinical practice. Crit Rev Clin Lab Sci 2018; 56:33-60. [DOI: 10.1080/10408363.2018.1525335] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Magnus Nakrem Lyngbakken
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway
- Center for Heart Failure Research, University of Oslo, Oslo, Norway
| | - Peder Langeland Myhre
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway
- Center for Heart Failure Research, University of Oslo, Oslo, Norway
| | - Helge Røsjø
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway
- Center for Heart Failure Research, University of Oslo, Oslo, Norway
| | - Torbjørn Omland
- Division of Medicine, Akershus University Hospital, Lørenskog, Norway
- Center for Heart Failure Research, University of Oslo, Oslo, Norway
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12
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Cathepsin K-deficiency impairs mouse cardiac function after myocardial infarction. J Mol Cell Cardiol 2018; 127:44-56. [PMID: 30465799 DOI: 10.1016/j.yjmcc.2018.11.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/08/2018] [Accepted: 11/16/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Extracellular matrix metabolism and cardiac cell death participate centrally in myocardial infarction (MI). This study tested the roles of collagenolytic cathepsin K (CatK) in post-MI left ventricular remodeling. METHODS AND RESULTS Patients with acute MI had higher plasma CatK levels (20.49 ± 7.07 pmol/L, n = 26) than those in subjects with stable angina pectoris (8.34 ± 1.66 pmol/L, n = 28, P = .01) or those without coronary heart disease (6.63 ± 0.84 pmol/L, n = 93, P = .01). CatK protein expression increases in mouse hearts at 7 and 28 days post-MI. Immunofluorescent staining localized CatK expression in cardiomyocytes, endothelial cells, fibroblasts, macrophages, and CD4+ T cells in infarcted mouse hearts at 7 days post-MI. To probe the direct participation of CatK in MI, we produced experimental MI in CatK-deficient mice (Ctsk-/-) and their wild-type (Ctsk+/+) littermates. CatK-deficiency yielded worsened cardiac function at 7 and 28 days post-MI, compared to Ctsk+/+ littermates (fractional shortening percentage: 5.01 ± 0.68 vs. 8.62 ± 1.04, P < .01, 7 days post-MI; 4.32 ± 0.52 vs. 7.60 ± 0.82, P < .01, 28 days post-MI). At 7 days post-MI, hearts from Ctsk-/- mice contained less CatK-specific type-I collagen fragments (10.37 ± 1.91 vs. 4.60 ± 0.49 ng/mg tissue extract, P = .003) and more fibrosis (1.67 ± 0.93 vs. 0.69 ± 0.20 type-III collagen positive area percentage, P = .01; 14.25 ± 4.12 vs. 6.59 ± 0.79 α-smooth muscle actin-positive area percentage, P = .016; and 0.82 ± 0.06 vs. 0.31 ± 0.08 CD90-positive area percentage, P = .008) than those of Ctsk+/+ mice. Immunostaining demonstrated that CatK-deficiency yielded elevated cardiac cell death but reduced cardiac cell proliferation. In vitro studies supported a role of CatK in cardiomyocyte survival. CONCLUSION Plasma CatK levels are increased in MI patients. Heart CatK expression is also elevated post-MI, but CatK-deficiency impairs post-MI cardiac function in mice by increasing myocardial fibrosis and cardiomyocyte death.
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13
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Long-term oral atazanavir attenuates myocardial infarction-induced cardiac fibrosis. Eur J Pharmacol 2018; 828:97-102. [DOI: 10.1016/j.ejphar.2018.03.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/28/2018] [Accepted: 03/28/2018] [Indexed: 11/22/2022]
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14
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El Hajj EC, El Hajj MC, Ninh VK, Gardner JD. Inhibitor of lysyl oxidase improves cardiac function and the collagen/MMP profile in response to volume overload. Am J Physiol Heart Circ Physiol 2018; 315:H463-H473. [PMID: 29775412 DOI: 10.1152/ajpheart.00086.2018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The cardiac extracellular matrix is a complex architectural network that serves many functions, including providing structural and biochemical support to surrounding cells and regulating intercellular signaling pathways. Cardiac function is directly affected by extracellular matrix (ECM) composition, and alterations of the ECM contribute to the progression of heart failure. Initially, collagen deposition is an adaptive response that aims to preserve tissue integrity and maintain normal ventricular function. However, the synergistic effects of proinflammatory and profibrotic responses induce a vicious cycle, which causes excess activation of myofibroblasts, significantly increasing collagen deposition and accumulation in the matrix. Furthermore, excess synthesis and activation of the enzyme lysyl oxidase (LOX) during disease increases collagen cross-linking, which significantly increases collagen resistance to degradation by matrix metalloproteinases (MMPs). In the present study, the aortocaval fistula model of volume overload (VO) was used to determine whether LOX inhibition could prevent adverse changes in the ECM and subsequent cardiac dysfunction. The major findings from this study were that LOX inhibition 1) prevented VO-induced increases in left ventricular wall stress; 2) partially attenuated VO-induced ventricular hypertrophy; 3) completely blocked the increases in fibrotic proteins, including collagens, MMPs, and their tissue inhibitors; and 4) prevented the VO-induced decline in cardiac function. It remains unclear whether a direct interaction between LOX and MMPs exists; however, our experiments suggest a potential link between the two because LOX inhibition completely attenuated VO-induced increases in MMPs. Overall, our study demonstrated key cardioprotective effects of LOX inhibition against adverse cardiac remodeling due to chronic VO. NEW & NOTEWORTHY Although the primary role of lysyl oxidase (LOX) is to cross-link collagens, we found that elevated LOX during cardiac disease plays a key role in the progression of heart failure. Here, we show that inhibition of LOX in volume-overloaded rats prevented the development of cardiac dysfunction and improved ventricular collagen and matrix metalloproteinase/tissue inhibitor of metalloproteinase profiles.
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Affiliation(s)
- Elia C El Hajj
- Department of Physiology, LSU Health Sciences Center , New Orleans, Louisiana
| | - Milad C El Hajj
- Department of Physiology, LSU Health Sciences Center , New Orleans, Louisiana
| | - Van K Ninh
- Department of Physiology, LSU Health Sciences Center , New Orleans, Louisiana
| | - Jason D Gardner
- Department of Physiology, LSU Health Sciences Center , New Orleans, Louisiana
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15
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Abstract
BACKGROUND Prostaglandin E2 (PGE2) signals through 4 separate G-protein coupled receptor sub-types to elicit a variety of physiologic and pathophysiological effects. We recently reported that PGE2 via its EP3 receptor could reduce cardiac contractility of isolated myocytes and the working heart preparation. We thus hypothesized that there is an imbalance in the EP3/EP4 ratio towards EP3 in the failing heart and that overexpression of EP4 in a mouse model of heart failure would improve cardiac function. METHODS AND RESULTS Our hypothesis was tested in a mouse model of myocardial infarction (MI) with the use of AAV9-EP4 driven by the myosin heavy chain promoter to overexpress EP4 in the cardiac myocytes. Echocardiography was performed to assess cardiac function. We found that overexpression of EP4 improved shortening fraction (p = 0.0025), ejection fraction (p = 0.0003), and reduced left ventricular dimension at systole (p = 0.0013). Overexpression of EP4 also significantly reduced indices of cardiac hypertrophy and interstitial collagen fraction. Animals treated with AAV9-EP4 also had a significant decrease in TNFα mRNA expression and in the number of macrophages and T cells migrated post MI coupled with a reduction in the expression of iNOS. CONCLUSION Overexpression of EP4 improves cardiac function post MI. This may be mediated through reductions in adverse cardiac remodeling or via inhibition of cytokine/chemokine production.
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16
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Meschiari CA, Jung M, Iyer RP, Yabluchanskiy A, Toba H, Garrett MR, Lindsey ML. Macrophage overexpression of matrix metalloproteinase-9 in aged mice improves diastolic physiology and cardiac wound healing after myocardial infarction. Am J Physiol Heart Circ Physiol 2018; 314:H224-H235. [PMID: 29030341 PMCID: PMC5867652 DOI: 10.1152/ajpheart.00453.2017] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 10/03/2017] [Accepted: 10/09/2017] [Indexed: 12/26/2022]
Abstract
Matrix metalloproteinase (MMP)-9 increases in the myocardium with advanced age and after myocardial infarction (MI). Because young transgenic (TG) mice overexpressing human MMP-9 only in macrophages show better outcomes post-MI, whereas aged TG mice show a worse aging phenotype, we wanted to evaluate the effect of aging superimposed on MI to see if the detrimental effect of aging counteracted the benefits of macrophage MMP-9 overexpression. We used 17- to 28-mo-old male and female C57BL/6J wild-type (WT) and TG mice ( n = 10-21 mice/group) to evaluate the effects of aging superimposed on MI. Despite similar infarct areas and mortality rates at day 7 post-MI, aging TG mice showed improved diastolic properties and remodeling index compared with WT mice (both P < 0.05). Macrophage numbers were higher in TG than WT mice at days 0 and 7 post-MI, and the post-MI increase was due to elevated cluster of differentiation 18 protein levels (all P < 0.05). RNA sequencing analysis of cardiac macrophages isolated from day 7 post-MI infarcts identified 1,276 statistically different (all P < 0.05) genes (994 increased and 282 decreased in TG mice). Reduced expression of vascular endothelial growth factor A, platelet-derived growth factor subunit A, and transforming growth factor-β3, along with elevated expression of tissue inhibitor of MMP-4, in macrophages revealed mechanisms of indirect downstream effects on fibroblasts and neovascularization. While collagen accumulation was enhanced in TG mice compared with WT mice at days 0 and 7 post-MI ( P < 0.05 for both), the post-MI collagen cross-linking ratio was higher in WT mice ( P < 0.05), consistent with increased diastolic volumes. Vessel numbers [by Griffonia ( Bandeiraea) simplicifolia lectin I staining] were decreased in TG mice compared with WT mice at days 0 and 7 post-MI ( P < 0.05 for both). In conclusion, macrophage-derived MMP-9 improved post-MI cardiac wound healing through direct and indirect mechanisms to improve diastolic physiology and remodeling. NEW & NOTEWORTHY Aging mice with macrophage overexpression of matrix metalloproteinase-9 have increased macrophage numbers 7 days after myocardial infarction, resulting in improved diastolic physiology and left ventricular remodeling through effects on cardiac wound healing.
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Affiliation(s)
- Cesar A Meschiari
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center , Jackson, Mississippi
| | - Mira Jung
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center , Jackson, Mississippi
| | - Rugmani Padmanabhan Iyer
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center , Jackson, Mississippi
| | - Andriy Yabluchanskiy
- Department of Geriatric Medicine, University of Oklahoma Health Sciences Center , Oklahoma City, Oklahoma
| | - Hiroe Toba
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center , Jackson, Mississippi
- Division of Pathological Sciences, Department of Clinical Pharmacology, Kyoto Pharmaceutical University , Kyoto , Japan
| | - Michael R Garrett
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center , Jackson, Mississippi
| | - Merry L Lindsey
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center , Jackson, Mississippi
- G. V. (Sonny) Montgomery Veterans Affairs Medical Center , Jackson, Mississippi
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17
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Kong P, Shinde AV, Su Y, Russo I, Chen B, Saxena A, Conway SJ, Graff JM, Frangogiannis NG. Opposing Actions of Fibroblast and Cardiomyocyte Smad3 Signaling in the Infarcted Myocardium. Circulation 2017; 137:707-724. [PMID: 29229611 DOI: 10.1161/circulationaha.117.029622] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 10/20/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Transforming growth factor-βs regulate a wide range of cellular responses by activating Smad-dependent and Smad-independent cascades. In the infarcted heart, Smad3 signaling is activated in both cardiomyocytes and interstitial cells. We hypothesized that cell-specific actions of Smad3 regulate repair and remodeling in the infarcted myocardium. METHODS To dissect cell-specific Smad3 actions in myocardial infarction, we generated mice with Smad3 loss in activated fibroblasts or cardiomyocytes. Cardiac function was assessed after reperfused or nonreperfused infarction using echocardiography. The effects of cell-specific Smad3 loss on the infarcted heart were studied using histological studies, assessment of protein, and gene expression levels. In vitro, we studied Smad-dependent and Smad-independent actions in isolated cardiac fibroblasts. RESULTS Mice with fibroblast-specific Smad3 loss had accentuated adverse remodeling after reperfused infarction and exhibited an increased incidence of late rupture after nonreperfused infarction. The consequences of fibroblast-specific Smad3 loss were not a result of effects on acute infarct size but were associated with unrestrained fibroblast proliferation, impaired scar remodeling, reduced fibroblast-derived collagen synthesis, and perturbed alignment of myofibroblast arrays in the infarct. Polarized light microscopy in Sirius red-stained sections demonstrated that the changes in fibroblast morphology were associated with perturbed organization of the collagenous matrix in the infarcted area. In contrast, α-smooth muscle actin expression by infarct myofibroblasts was not affected by Smad3 loss. Smad3 critically regulated fibroblast function, activating integrin-mediated nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-2 (NOX-2) expression. Smad3 loss in cardiomyocytes attenuated remodeling and dysfunction after infarction. Cardiomyocyte-specific Smad3 loss did not affect acute infarct size but was associated with attenuated cardiomyocyte apoptosis in the remodeling myocardium, accompanied by decreased myocardial NOX-2 levels, reduced nitrosative stress, and lower matrix metalloproteinase-2 expression. CONCLUSIONS In healing myocardial infarction, myofibroblast- and cardiomyocyte-specific activation of Smad3 has contrasting functional outcomes that may involve activation of an integrin/reactive oxygen axis.
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Affiliation(s)
- Ping Kong
- Department of Medicine (Cardiology), Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (P.K., A.V.S., Y.S., I.R., B.C., A.S., N.G.F.)
| | - Arti V Shinde
- Department of Medicine (Cardiology), Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (P.K., A.V.S., Y.S., I.R., B.C., A.S., N.G.F.)
| | - Ya Su
- Department of Medicine (Cardiology), Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (P.K., A.V.S., Y.S., I.R., B.C., A.S., N.G.F.)
| | - Ilaria Russo
- Department of Medicine (Cardiology), Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (P.K., A.V.S., Y.S., I.R., B.C., A.S., N.G.F.)
| | - Bijun Chen
- Department of Medicine (Cardiology), Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (P.K., A.V.S., Y.S., I.R., B.C., A.S., N.G.F.)
| | - Amit Saxena
- Department of Medicine (Cardiology), Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (P.K., A.V.S., Y.S., I.R., B.C., A.S., N.G.F.)
| | - Simon J Conway
- Department of Pediatrics, Indiana University, Indianapolis (S.J.C.)
| | - Jonathan M Graff
- Department of Developmental Biology, University of Texas Southwestern, Dallas (J.M.G.)
| | - Nikolaos G Frangogiannis
- Department of Medicine (Cardiology), Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, NY (P.K., A.V.S., Y.S., I.R., B.C., A.S., N.G.F.)
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18
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Zhu JJ, Zhao Q, Qu HJ, Li XM, Chen QJ, Liu F, Chen BD, Yang YN. Usefulness of plasma matrix metalloproteinase-9 levels in prediction of in-hospital mortality in patients who received emergent percutaneous coronary artery intervention following myocardial infarction. Oncotarget 2017; 8:105809-105818. [PMID: 29285294 PMCID: PMC5739681 DOI: 10.18632/oncotarget.22401] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 09/21/2017] [Indexed: 11/25/2022] Open
Abstract
The aim of the present study was to investigate the predictive value of the plasma matrix metalloproteinase-9 (MMP-9) level at admission for in-hospital mortality in patients who received emergency percutaneous coronary intervention (PCI) following AMI. A single blood sample was collected at admission from 155 consecutive AMI patients who underwent emergent PCI. The plasma levels of MMP-9 value (528.9±191.6 ng/ml) were significantly higher in the patients who died (n=24) than in the survivors (385.4±236.0 ng/ml) during 14 days of hospitalization (P=0.005). The age, left ventricle wall motion score index (WMIS), Global Registry of Acute Coronary Events (GRACE) score and B-type natriuretic peptide (BNP) levels and GENSINI score at admission were significantly different between the patients who died and those who survived (P<0.001, P=0.004, P<0.001 and P<0.001, respectively). Cut-off concentrations for prediction of death was identified from receiver operator characteristic (ROC) curves. Using the cut-off value (MMP-9 level 398.2 ng/ml) to stratify the patients into two groups, the group with higher MMP-9 levels had a greater rate of in-hospital mortality than the lower level group (P<0.001). With the exception of the GRACE score, among all biomarkers measured, in stepwise multiple logistic regressions, only the MMP-9 level predicted the risk of in-hospital death after adjustment for all other risk factors (odds ratio 5.02, 95% CI 1.44 to 17.55). In conclusion, a higher MMP-9 level is an independent predictor of in-hospital death in AMI patients who received emergency PCI.
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Affiliation(s)
- Jia-Jun Zhu
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Qian Zhao
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Hui-Juan Qu
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Xiao-Mei Li
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Qing-Jie Chen
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
| | - Fen Liu
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Bang-Dang Chen
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Xinjiang Key Laboratory of Cardiovascular Disease Research, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
| | - Yi-Ning Yang
- Department of Cardiology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
- Clinical Research Institute of Xinjiang Medical University, Urumqi, China
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19
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Barlow SC, Doviak H, Jacobs J, Freeburg LA, Perreault PE, Zellars KN, Moreau K, Villacreses CF, Smith S, Khakoo AY, Lee T, Spinale FG. Intracoronary delivery of recombinant TIMP-3 after myocardial infarction: effects on myocardial remodeling and function. Am J Physiol Heart Circ Physiol 2017; 313:H690-H699. [PMID: 28754718 DOI: 10.1152/ajpheart.00114.2017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 06/19/2017] [Accepted: 07/02/2017] [Indexed: 11/22/2022]
Abstract
Ischemia-reperfusion (IR) and myocardial infarction (MI) cause adverse left ventricular (LV) remodeling and heart failure and are facilitated by an imbalance in matrix metalloproteinase (MMP) activation and the endogenous tissue inhibitors of metalloproteinase (TIMPs). We have identified that myocardial injections of recombinant TIMP-3 (rTIMP-3; human full length) can interrupt post-MI remodeling. However, whether and to what degree intracoronary delivery of rTIMP-3 post-IR is feasible and effective remained to be established. Pigs (25 kg) underwent coronary catheterization and balloon occlusion of the left anterior descending coronary artery (LAD) for 90 min whereby at the final 4 min, rTIMP-3 (30 mg, n = 9) or saline was infused in the distal LAD. LV echocardiography was performed at 3-28 days post-IR, and LV ejection fraction (EF) and LV end-diastolic volume were measured. LV EF fell and LV end-diastolic volume increased from baseline (pre-IR) values (66 ± 1% and 40 ± 1 ml, respectively, means ± standard deviation) in both groups; however, the extent of LV dilation was reduced in the rTIMP-3 group by 40% at 28 days post-IR (P < 0.05) and the fall in LV EF was attenuated. Despite equivalent plasma troponin levels (14 ± 3 ng/ml), computed MI size at 28 days was reduced by over 45% in the rTIMP-3 group (P < 0.05), indicating that rTIMP-3 treatment abrogated MI expansion post-IR. Plasma NH2-terminal pro-brain natriuretic peptide levels, an index of heart failure progression, were reduced by 25% in the rTIMP-3 group compared with MI saline values (P < 0.05). Although the imbalance between MMPs and TIMPs has been recognized as a contributory factor for post-MI remodeling, therapeutic strategies targeting this imbalance have not been forthcoming. This study is the first to demonstrate that a relevant delivery approach (intracoronary) using rTIMP can alter the course of post-MI remodeling.NEW & NOTEWORTHY Myocardial ischemia and reperfusion injury remain significant causes of morbidity and mortality whereby alterations in the balance between matrix metalloproteinase and tissue inhibitor of metalloproteinase have been identified as contributory biological mechanisms. This novel translational study advances the concept of targeted delivery of recombinant proteins to modify adverse myocardial remodeling in ischemia-reperfusion injury.
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Affiliation(s)
- Shayne C Barlow
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Heather Doviak
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Julia Jacobs
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Lisa A Freeburg
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Paige E Perreault
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Kia N Zellars
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Karen Moreau
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Camila F Villacreses
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
| | - Stephen Smith
- CardioMetabolic Disorders, Amgen, South San Francisco, California
| | - Aarif Y Khakoo
- CardioMetabolic Disorders, Amgen, South San Francisco, California
| | - TaeWeon Lee
- CardioMetabolic Disorders, Amgen, South San Francisco, California
| | - Francis G Spinale
- Cardiovascular Translational Research Center, University of South Carolina School of Medicine and the William Jennings Bryan Dorn Veterans Affairs Medical Center, Columbia, South Carolina; and
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Revuelta-López E, Soler-Botija C, Nasarre L, Benitez-Amaro A, de Gonzalo-Calvo D, Bayes-Genis A, Llorente-Cortés V. Relationship among LRP1 expression, Pyk2 phosphorylation and MMP-9 activation in left ventricular remodelling after myocardial infarction. J Cell Mol Med 2017; 21:1915-1928. [PMID: 28378397 PMCID: PMC5571517 DOI: 10.1111/jcmm.13113] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/30/2016] [Indexed: 01/09/2023] Open
Abstract
Left ventricular (LV) remodelling after myocardial infarction (MI) is a crucial determinant of the clinical course of heart failure. Matrix metalloproteinase (MMP) activation is strongly associated with LV remodelling after MI. Elucidation of plasma membrane receptors related to the activation of specific MMPs is fundamental for treating adverse cardiac remodelling after MI. The aim of current investigation was to explore the potential association between the low‐density lipoprotein receptor‐related protein 1 (LRP1) and MMP‐9 and MMP‐2 spatiotemporal expression after MI. Real‐time PCR and Western blot analyses showed that LRP1 mRNA and protein expression levels, respectively, were significantly increased in peri‐infarct and infarct zones at 10 and 21 days after MI. Confocal microscopy demonstrated high colocalization between LRP1 and the fibroblast marker vimentin, indicating that LRP1 is mostly expressed by cardiac fibroblasts in peri‐infarct and infarct areas. LRP1 also colocalized with proline‐rich tyrosine kinase 2 (pPyk2) and MMP‐9 in cardiac fibroblasts in ischaemic areas at 10 and 21 days after MI. Cell culture experiments revealed that hypoxia increases LRP1, pPyk2 protein levels and MMP‐9 activity in fibroblasts, without significant changes in MMP‐2 activity. MMP‐9 activation by hypoxia requires LRP1 and Pyk2 phosphorylation in fibroblasts. Collectively, our in vivo and in vitro data support a major role of cardiac fibroblast LRP1 levels on MMP‐9 up‐regulation associated with ventricular remodelling after MI.
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Affiliation(s)
- Elena Revuelta-López
- Cardiovascular Research Center, CSIC-ICCC, IIB Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.,ICREC (Heart Failure and Cardiac Regeneration) Research Program, Health Sciences Research Institute Germans Tries i Pujol, Badalona (Barcelona), Spain
| | - Carol Soler-Botija
- ICREC (Heart Failure and Cardiac Regeneration) Research Program, Health Sciences Research Institute Germans Tries i Pujol, Badalona (Barcelona), Spain
| | - Laura Nasarre
- Cardiovascular Research Center, CSIC-ICCC, IIB Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Aleyda Benitez-Amaro
- Cardiovascular Research Center, CSIC-ICCC, IIB Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - David de Gonzalo-Calvo
- Cardiovascular Research Center, CSIC-ICCC, IIB Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Antoni Bayes-Genis
- ICREC (Heart Failure and Cardiac Regeneration) Research Program, Health Sciences Research Institute Germans Tries i Pujol, Badalona (Barcelona), Spain.,Cardiology Service, Germans Trias i Pujol University Hospital, Badalona, Spain.,Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Vicenta Llorente-Cortés
- Cardiovascular Research Center, CSIC-ICCC, IIB Sant Pau, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
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21
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Tomek J, Bub G. Hypertension-induced remodelling: on the interactions of cardiac risk factors. J Physiol 2017; 595:4027-4036. [PMID: 28217927 PMCID: PMC5471416 DOI: 10.1113/jp273043] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 01/25/2017] [Indexed: 12/19/2022] Open
Abstract
Hypertension induces considerable cardiac remodelling, such as hypertrophy, interstitial fibrosis, and abnormal activity of the cardiac sympathetic nervous system, which are established risk factors in several highly dangerous heart diseases, such as ventricular fibrillation and congestive heart failure. All these risk factors and heart diseases are studied extensively in isolation, but to our knowledge, there is no comprehensive review of their interactions. At the same time, there is growing evidence suggesting that such interactions are numerous and that a successful therapy against a particular condition may have unexpectedly weak effects on mortality, as treated patients may die of a different cause exacerbated by the therapy. In this article, we present a multiscale review of the literature focusing on the relationships between the above‐mentioned risk factors and heart diseases, and introduce a framework that gives insight into their possible interactions. We use this framework to demonstrate that conditions such as fibrosis and elevated activity of the sympathetic nervous system may be compensatory, rather than purely pathological, mechanisms in certain contexts. Finally, we show why the described mechanisms are relevant not only in hypertension, but also in the case of healed myocardial infarction.
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Affiliation(s)
- Jakub Tomek
- Department of Physiology Anatomy and Genetics, University of Oxford, Oxford, UK
| | - Gil Bub
- Department of Physiology, McGill University, Canada
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22
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Matrix Metalloproteinases in Myocardial Infarction and Heart Failure. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 147:75-100. [PMID: 28413032 DOI: 10.1016/bs.pmbts.2017.02.001] [Citation(s) in RCA: 163] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cardiovascular disease is the leading cause of death, accounting for 600,000 deaths each year in the United States. In addition, heart failure accounts for 37% of health care spending. Matrix metalloproteinases (MMPs) increase after myocardial infarction (MI) and correlate with left ventricular dysfunction in heart failure patients. MMPs regulate the remodeling process by facilitating extracellular matrix turnover and inflammatory signaling. Due to the critical role MMPs play during cardiac remodeling, there is a need to better understand the pathophysiological mechanism of MMPs, including the biological function of the downstream products of MMP proteolysis. Future studies developing new therapeutic targets that inhibit specific MMP actions to limit the development of heart failure post-MI are warranted. This chapter focuses on the role of MMPs post-MI, the efficiency of MMPs as biomarkers for MI or heart failure, and the future of MMPs and their cleavage products as targets for prevention of post-MI heart failure.
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23
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Morrissey PJ, Murphy KR, Daley JM, Schofield L, Turan NN, Arunachalam K, Abbott JD, Koren G. A novel method of standardized myocardial infarction in aged rabbits. Am J Physiol Heart Circ Physiol 2017; 312:H959-H967. [PMID: 28213402 DOI: 10.1152/ajpheart.00582.2016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 02/01/2017] [Accepted: 02/01/2017] [Indexed: 11/22/2022]
Abstract
The incidence of both myocardial infarction (MI) and sudden cardiac death increases with age. Here, we describe the development of a minimally invasive large animal model of MI that can be applied to young or aged animals. We demonstrate that rabbit coronary anatomy is highly variable, more so than described in previous literature. In this work, we categorize the coronary pattern of 37 young rabbits and 64 aged rabbits. Aged rabbits had a higher degree of branching from the left main coronary artery. Standardizing the model across age cohorts required a new approach, targeting an area of myocardium rather than a specific vessel. Here, we present a method for achieving a reproducible infarct size, one that yielded a consistent scar encompassing ~30% of the apical left ventricular free wall. The model's consistency allowed for more valid comparisons of MI sequelae between age cohorts.NEW & NOTEWORTHY This study describes the coronary angiographic imaging of young and aged rabbits. We developed and improved a novel minimally invasive approach for coil embolization that targets a specific area of myocardium and yielded a consistent scar encompassing ~30% of the left ventricular free wall of young and aged rabbit hearts.
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Affiliation(s)
- Patrick J Morrissey
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Kevin R Murphy
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island; .,Department of Molecular Biology, Cellular Biology and Biochemistry, Brown University, Providence, Rhode Island; and
| | - Jean M Daley
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Lorraine Schofield
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Nilufer N Turan
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Karuppiah Arunachalam
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island.,Department of Internal Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - J Dawn Abbott
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island
| | - Gideon Koren
- Cardiovascular Research Center, Division of Cardiology, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island;
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24
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Minocycline attenuates cardiac dysfunction in tumor-burdened mice. J Mol Cell Cardiol 2016; 100:35-42. [PMID: 27663174 DOI: 10.1016/j.yjmcc.2016.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 09/15/2016] [Accepted: 09/19/2016] [Indexed: 12/15/2022]
Abstract
Cardiovascular dysfunction as a result of tumor burden is becoming a recognized complication; however, the mechanisms remain unknown. A murine model of cancer cachexia has shown marked increases of matrix metalloproteinases (MMPs), known mediators of cardiac remodeling, in the left ventricle. The extent to which MMPs are involved in remodeling remains obscured. To this end a common antibiotic, minocycline, with MMP inhibitory properties was used to elucidate MMP involvement in tumor induced cardiovascular dysfunction. Tumor-bearing mice showed decreased cardiac function with reduced posterior wall thickness (PWTs) during systole, increased MMP and collagen expression consistent with fibrotic remodeling. Administration of minocycline preserved cardiac function in tumor bearing mice and decreased collagen RNA expression in the left ventricle. MMP protein levels were unaffected by minocycline administration, with the exception of MMP-9, indicating minocycline inhibition mechanisms are directly affecting MMP activity. Cancer induced cardiovascular dysfunction is an increasing concern; novel therapeutics are needed to prevent cardiac complications. Minocycline is a well-known antibiotic and recently has been shown to possess MMP inhibitory properties. Our findings presented here show that minocycline could represent a novel use for a long established drug in the prevention and treatment of cancer induced cardiovascular dysfunction.
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25
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Liu Q, Tian J, Xu Y, Li C, Meng X, Fu F. Protective Effect of RA on Myocardial Infarction-Induced Cardiac Fibrosis via AT1R/p38 MAPK Pathway Signaling and Modulation of the ACE2/ACE Ratio. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:6716-22. [PMID: 27538767 DOI: 10.1021/acs.jafc.6b03001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Rosmarinic acid (α-o-caffeoyl-3,4-dihydroxyphenyllactic acid, RA) is a major active constituent of Rosmarinus officinalis Linn. (rosemary) having significant anti-inflammatory, anti-apoptotic, and antioxidant effects. However, the cardioprotection of RA is still not understood. The present study was designed, for the first time, to investigate the cardioprotection of RA on myocardial infarction (MI)-induced cardiac fibrosis and to clarify the possible mechanisms. MI was induced in adult rats by left anterior descending coronary artery ligation, and animals were then administered RA (50, 100, or 200 mg/kg) by gavage. Compared with the model group, RA treatment ameliorated changes in the left ventricular systolic pressure (LVSP), +dp/dtmax, and -dp/dtmax after 4 weeks. This was associated with attenuation of infarct size, collagen volume fraction (CVF), expression of collagen I, collagen III, alpha smooth muscle actin (α-SMA), and hydroxyproline (Hyp) concentrations. RA treatment was also associated with decreased angiotensin-converting enzyme (ACE) expression and increased ACE2 expression, as well as decreased expression of angiotensin type 1 receptor (AT1R) and phospho-p38 mitogen-activated protein kinase (p38 MAPK). Thus, RA can protect against cardiac dysfunction and fibrosis following MI, likely due to decreasing ACE expression and increasing ACE2 expression via the AT1R/p38 MAPK pathway.
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Affiliation(s)
- Qiaofeng Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University , Yantai 264005, P.R. China
| | - Jingwei Tian
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University , Yantai 264005, P.R. China
| | - Yanan Xu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University , Yantai 264005, P.R. China
| | - Chunmei Li
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University , Yantai 264005, P.R. China
| | - Xiangjing Meng
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University , Yantai 264005, P.R. China
| | - Fenghua Fu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University , Yantai 264005, P.R. China
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26
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Kirk JA, Cingolani OH. Thrombospondins in the transition from myocardial infarction to heart failure. J Mol Cell Cardiol 2015; 90:102-10. [PMID: 26686988 DOI: 10.1016/j.yjmcc.2015.12.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/02/2015] [Accepted: 12/09/2015] [Indexed: 11/27/2022]
Abstract
The heart's reaction to ischemic injury from a myocardial infarction involves complex cross-talk between the extra-cellular matrix (ECM) and different cell types within the myocardium. The ECM functions not only as a scaffold where myocytes beat synchronously, but an active signaling environment that regulates the important post-MI responses. The thrombospondins are matricellular proteins that modulate cell--ECM interactions, functioning as "sensors" that mediate outside-in and inside-out signaling. Thrombospondins are highly expressed during embryonic stages, and although their levels decrease during adult life, can be re-expressed in high quantities in response to cardiac stress including myocardial infarction and heart failure. Like a Swiss-army knife, the thrombospondins possess many tools: numerous binding domains that allow them to interact with other elements of the ECM, cell surface receptors, and signaling molecules. It is through these that the thrombospondins function. In the present review, we provide basic as well as clinical evidence linking the thrombospondin proteins with the post myocardial infarction response, including inflammation, fibrotic matrix remodeling, angiogenesis, as well as myocyte hypertrophy, apoptosis, and contractile dysfunction in heart failure. We will describe what is known regarding the intracellular signaling pathways that are involved with these responses, paving the road for future studies identifying these proteins as therapeutic targets for cardiac disease.
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Affiliation(s)
- Jonathan A Kirk
- Department of Cell and Molecular Physiology, Health Sciences Division, Loyola University Chicago, Maywood, IL 60153, United States.
| | - Oscar H Cingolani
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, United States
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27
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Clarke SA, Richardson WJ, Holmes JW. Modifying the mechanics of healing infarcts: Is better the enemy of good? J Mol Cell Cardiol 2015; 93:115-24. [PMID: 26631496 DOI: 10.1016/j.yjmcc.2015.11.028] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/09/2015] [Accepted: 11/26/2015] [Indexed: 02/06/2023]
Abstract
Myocardial infarction (MI) is a major source of morbidity and mortality worldwide, with over 7 million people suffering infarctions each year. Heart muscle damaged during MI is replaced by a collagenous scar over a period of several weeks, and the mechanical properties of that scar tissue are a key determinant of serious post-MI complications such as infarct rupture, depression of heart function, and progression to heart failure. Thus, there is increasing interest in developing therapies that modify the structure and mechanics of healing infarct scar. Yet most prior attempts at therapeutic scar modification have failed, some catastrophically. This article reviews available information about the mechanics of healing infarct scar and the functional impact of scar mechanical properties, and attempts to infer principles that can better guide future attempts to modify scar. One important conclusion is that collagen structure, mechanics, and remodeling of healing infarct scar vary so widely among experimental models that any novel therapy should be tested across a range of species, infarct locations, and reperfusion protocols. Another lesson from past work is that the biology and mechanics of healing infarcts are sufficiently complex that the effects of interventions are often counterintuitive; for example, increasing infarct stiffness has little effect on heart function, and inhibition of matrix metalloproteases (MMPs) has little effect on scar collagen content. Computational models can help explain such counterintuitive results, and are becoming an increasingly important tool for integrating known information to better identify promising therapies and design experiments to test them. Moving forward, potentially exciting new opportunities for therapeutic modification of infarct mechanics include modulating anisotropy and promoting scar compaction.
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Affiliation(s)
- Samantha A Clarke
- Department of Biomedical Engineering, University of Virginia, United States
| | - William J Richardson
- Department of Biomedical Engineering, University of Virginia, United States; Robert M. Berne Cardiovascular Research Center, University of Virginia, United States
| | - Jeffrey W Holmes
- Department of Biomedical Engineering, University of Virginia, United States; Department of Medicine, University of Virginia, United States; Robert M. Berne Cardiovascular Research Center, University of Virginia, United States.
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28
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Iyer RP, Jung M, Lindsey ML. Using the laws of thermodynamics to understand how matrix metalloproteinases coordinate the myocardial response to injury. ACTA ACUST UNITED AC 2015; 2:75-82. [PMID: 27376092 PMCID: PMC4930103 DOI: 10.2147/mnm.s74093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Following myocardial infarction (MI), the left ventricle (LV) undergoes a series of molecular, cellular, and functional alterations that are both part of the wound healing response to form a scar in the infarct region and the consequence of that response. Using the laws of thermodynamics as an analogy, we present here three laws for categorizing the post-MI LV remodeling process. The first law is that the LV will attempt to maintain equilibrium and compensate as a way to maximize function, the second law is that remodeling is progressive and unidirectional, and the third law is that the final goal is (ideally, but not always achievable) a stable, equilibrated scar. This comparison helps to define the boundaries of the system, whether it be the infarct zone, the LV, the heart, or the entire body. This review provides an overview for those not directly in the field and establishes a framework to help prioritize future research directions.
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Affiliation(s)
- Rugmani Padmanabhan Iyer
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, School of Medicine, University of Mississippi Medical Center, University of Mississippi
| | - Mira Jung
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, School of Medicine, University of Mississippi Medical Center, University of Mississippi
| | - Merry L Lindsey
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, School of Medicine, University of Mississippi Medical Center, University of Mississippi; Research Service, GV (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, USA
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29
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Abstract
Myocardial infarction is defined as sudden ischemic death of myocardial tissue. In the clinical context, myocardial infarction is usually due to thrombotic occlusion of a coronary vessel caused by rupture of a vulnerable plaque. Ischemia induces profound metabolic and ionic perturbations in the affected myocardium and causes rapid depression of systolic function. Prolonged myocardial ischemia activates a "wavefront" of cardiomyocyte death that extends from the subendocardium to the subepicardium. Mitochondrial alterations are prominently involved in apoptosis and necrosis of cardiomyocytes in the infarcted heart. The adult mammalian heart has negligible regenerative capacity, thus the infarcted myocardium heals through formation of a scar. Infarct healing is dependent on an inflammatory cascade, triggered by alarmins released by dying cells. Clearance of dead cells and matrix debris by infiltrating phagocytes activates anti-inflammatory pathways leading to suppression of cytokine and chemokine signaling. Activation of the renin-angiotensin-aldosterone system and release of transforming growth factor-β induce conversion of fibroblasts into myofibroblasts, promoting deposition of extracellular matrix proteins. Infarct healing is intertwined with geometric remodeling of the chamber, characterized by dilation, hypertrophy of viable segments, and progressive dysfunction. This review manuscript describes the molecular signals and cellular effectors implicated in injury, repair, and remodeling of the infarcted heart, the mechanistic basis of the most common complications associated with myocardial infarction, and the pathophysiologic effects of established treatment strategies. Moreover, we discuss the implications of pathophysiological insights in design and implementation of new promising therapeutic approaches for patients with myocardial infarction.
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Affiliation(s)
- Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Division of Cardiology, Department of Medicine, Albert Einstein College of Medicine, Bronx, New York, USA
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30
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Richardson WJ, Clarke SA, Quinn TA, Holmes JW. Physiological Implications of Myocardial Scar Structure. Compr Physiol 2015; 5:1877-909. [PMID: 26426470 DOI: 10.1002/cphy.c140067] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Once myocardium dies during a heart attack, it is replaced by scar tissue over the course of several weeks. The size, location, composition, structure, and mechanical properties of the healing scar are all critical determinants of the fate of patients who survive the initial infarction. While the central importance of scar structure in determining pump function and remodeling has long been recognized, it has proven remarkably difficult to design therapies that improve heart function or limit remodeling by modifying scar structure. Many exciting new therapies are under development, but predicting their long-term effects requires a detailed understanding of how infarct scar forms, how its properties impact left ventricular function and remodeling, and how changes in scar structure and properties feed back to affect not only heart mechanics but also electrical conduction, reflex hemodynamic compensations, and the ongoing process of scar formation itself. In this article, we outline the scar formation process following a myocardial infarction, discuss interpretation of standard measures of heart function in the setting of a healing infarct, then present implications of infarct scar geometry and structure for both mechanical and electrical function of the heart and summarize experiences to date with therapeutic interventions that aim to modify scar geometry and structure. One important conclusion that emerges from the studies reviewed here is that computational modeling is an essential tool for integrating the wealth of information required to understand this complex system and predict the impact of novel therapies on scar healing, heart function, and remodeling following myocardial infarction.
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Affiliation(s)
- William J Richardson
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA.,Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
| | - Samantha A Clarke
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
| | - T Alexander Quinn
- Department of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jeffrey W Holmes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA.,Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.,Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
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31
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Deleon-Pennell KY, Altara R, Yabluchanskiy A, Modesti A, Lindsey ML. The circular relationship between matrix metalloproteinase-9 and inflammation following myocardial infarction. IUBMB Life 2015; 67:611-8. [PMID: 26269290 DOI: 10.1002/iub.1408] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 07/16/2015] [Indexed: 12/26/2022]
Abstract
Matrix metalloproteinase-9 (MMP-9) regulates remodeling of the left ventricle after myocardial infarction (MI) and is tightly linked to the inflammatory response. The inflammatory response serves to recruit leukocytes as part of the wound healing reaction to the MI injury, and infiltrated leukocytes produce cytokines and chemokines that stimulate MMP-9 production and release. In turn, MMP-9 proteolyzes cytokines and chemokines. Although in most cases, MMP-9 cleavage of the cytokine or chemokine substrate serves to increase activity, there are cases where cleavage results in reduced activity. Global MMP-9 deletion in mouse MI models has proven beneficial, suggesting inhibition of some aspects of MMP-9 activity may be valuable for clinical use. At the same time, overexpression of MMP-9 in macrophages has also proven beneficial, indicating that we still do not fully understand the complexity of MMP-9 mechanisms of action. In this review, we summarize the cycle of MMP-9 effects on cytokine production and cleavage to regulate leukocyte functions. Although we use MI as the example process, similar events occur in other inflammatory and wound healing conditions.
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Affiliation(s)
- Kristine Y Deleon-Pennell
- Department of Physiology and Biophysics, San Antonio Cardiovascular Proteomics Center and Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Raffaele Altara
- Department of Physiology and Biophysics, San Antonio Cardiovascular Proteomics Center and Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Andriy Yabluchanskiy
- Department of Physiology and Biophysics, San Antonio Cardiovascular Proteomics Center and Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA
| | - Alessandra Modesti
- Dipartimento di Scienze Biomediche, Sperimentali e Cliniche, Università degli Studi di Firenze, Firenze, Italy
| | - Merry L Lindsey
- Department of Physiology and Biophysics, San Antonio Cardiovascular Proteomics Center and Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, USA.,Research Service, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, USA
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32
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Tratwal J, Mathiasen AB, Juhl M, Brorsen SK, Kastrup J, Ekblond A. Influence of vascular endothelial growth factor stimulation and serum deprivation on gene activation patterns of human adipose tissue-derived stromal cells. Stem Cell Res Ther 2015; 6:62. [PMID: 25889587 PMCID: PMC4431456 DOI: 10.1186/s13287-015-0062-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 11/05/2014] [Accepted: 03/24/2015] [Indexed: 02/07/2023] Open
Abstract
Introduction Stimulation of mesenchymal stromal cells and adipose tissue-derived stromal cells (ASCs) with vascular endothelial growth factor (VEGF) has been used in multiple animal studies and clinical trials for regenerative purposes. VEGF stimulation is believed to promote angiogenesis and VEGF stimulation is usually performed under serum deprivation. Potential regenerative molecular mechanisms are numerous and the role of contributing factors is uncertain. The aim of the current study was to investigate the effect of in vitro serum deprivation and VEGF stimulation on gene expression patterns of ASCs. Methods Gene expressions of ASCs cultured in complete medium, ASCs cultured in serum-deprived medium and ASCs stimulated with VEGF in serum-deprived medium were compared. ASC characteristics according to criteria set by the International Society of Cellular Therapy were confirmed by flow cytometry. Microarray gene expressions were obtained using the Affymetrix HT HG-U133+ GeneChip®. Gene set enrichment analysis was performed using the Kyoto Encyclopedia of Genes and Genomes and gene ontology terms. Transcription of selected genes of interest was confirmed by quantitative PCR. Results Compared to ASCs in complete medium, 190 and 108 genes were significantly altered by serum deprivation and serum deprivation combined with VEGF, respectively. No significant differences in gene expression patterns between serum-deprived ASCs and serum-deprived ASCs combined with VEGF stimulation were found. Genes most prominently and significantly upregulated by both conditions were growth factors (IGF1, BMP6, PDGFD, FGF9), adhesion molecule CLSTN2, extracellular matrix-related proteins such as matricellular proteins SMOC2, SPON1 and ADAMTS12, and inhibitors of proliferation (JAG1). The most significantly downregulated genes included matrix metalloproteinases (MMP3, MMP1), and proliferation markers (CDKN3) and GREM2 (a BMP6 antagonist). Conclusion The decisive factor for the observed change in ASC gene expression proves to be serum starvation rather than VEGF stimulation. Changes in expression of growth factors, matricellular proteins and matrix metalloproteinases in concert, diverge from direct pro-angiogenic paracrine mechanisms as a primary consequence of the used protocol. In vitro serum starvation (with or without VEGF present) appears to favour cardioprotection, extracellular matrix remodelling and blood vessel maturation relevant for the late maturation phase in infarct healing.
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Affiliation(s)
- Josefine Tratwal
- Cardiology Stem Cell Centre, The Heart Centre, Rigshospitalet, University Hospital Copenhagen, Juliane Maries Vej 20, dept. 9302, Copenhagen, 2100, Denmark.
| | - Anders Bruun Mathiasen
- Cardiology Stem Cell Centre, The Heart Centre, Rigshospitalet, University Hospital Copenhagen, Juliane Maries Vej 20, dept. 9302, Copenhagen, 2100, Denmark.
| | - Morten Juhl
- Cardiology Stem Cell Centre, The Heart Centre, Rigshospitalet, University Hospital Copenhagen, Juliane Maries Vej 20, dept. 9302, Copenhagen, 2100, Denmark.
| | - Sonja Kim Brorsen
- Cardiology Stem Cell Centre, The Heart Centre, Rigshospitalet, University Hospital Copenhagen, Juliane Maries Vej 20, dept. 9302, Copenhagen, 2100, Denmark.
| | - Jens Kastrup
- Cardiology Stem Cell Centre, The Heart Centre, Rigshospitalet, University Hospital Copenhagen, Juliane Maries Vej 20, dept. 9302, Copenhagen, 2100, Denmark.
| | - Annette Ekblond
- Cardiology Stem Cell Centre, The Heart Centre, Rigshospitalet, University Hospital Copenhagen, Juliane Maries Vej 20, dept. 9302, Copenhagen, 2100, Denmark.
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Chymase inhibition improves vascular dysfunction and survival in stroke-prone spontaneously hypertensive rats. J Hypertens 2015; 32:1637-48; discussion 1649. [PMID: 24886822 DOI: 10.1097/hjh.0000000000000231] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To clarify the role of chymase in hypertension, we evaluated the effect of a chymase inhibitor, TY-51469, on vascular dysfunction and survival in stroke-prone spontaneously hypertensive rats (SHR-SP). METHODS SHR-SP were treated with TY-51469 (1 mg/kg per day) or placebo from 4 to 12 weeks old or until death. Wistar-Kyoto rats were used as a normal group. RESULTS SBP was significantly higher in both the placebo and TY-51469 groups than in the normal group, but there was no significant difference between the two treatment groups. Plasma renin, angiotensin-converting enzyme activity and angiotensin II levels were not different between the placebo and TY-51469 groups. In contrast, vascular chymase-like activity was significantly higher in the placebo than in the normal group, but it was reduced by TY-51469. Acetylcholine-induced vascular relaxation was significantly higher in the TY-51469 group than in the placebo group. There was significant augmentation of the number of monocytes/macrophages and matrix metalloproteinase-9 activity in aortic tissue from the placebo group compared with the normal group, and these changes were attenuated by TY-51469. There were also significant increases in mRNA levels of monocyte chemoattractant protein-1 and tumor necrosis factor-α in the placebo group that were attenuated by TY-51469. Cumulative survival was significantly prolonged in the TY-51469 group compared with the placebo group. CONCLUSION Chymase might play an important role in vascular dysfunction via augmentation both of matrix metalloproteinase-9 activity and monocyte/macrophage accumulation in SHR-SP, and its inhibition may be useful for preventing vascular remodeling and prolonging survival.
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Nguyen J, Sievers R, Motion JPM, Kivimäe S, Fang Q, Lee RJ. Delivery of Lipid Micelles into Infarcted Myocardium Using a Lipid-Linked Matrix Metalloproteinase Targeting Peptide. Mol Pharm 2015; 12:1150-7. [DOI: 10.1021/mp500653y] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Juliane Nguyen
- Department
of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical
Sciences, University at Buffalo, The State University of New York, Buffalo, New York 14214, United States
| | - Richard Sievers
- Department
of Medicine, Cardiovascular Research Institute, and Institute of Regeneration
Medicine, University of California—San Francisco, San Francisco, California 94143, United States
| | - J. P. Michael Motion
- Department
of Bioengineering and Therapeutic Sciences, University of California—San Francisco, San Francisco, California 94143, United States
| | - Saul Kivimäe
- Department
of Bioengineering and Therapeutic Sciences, University of California—San Francisco, San Francisco, California 94143, United States
| | - Qizhi Fang
- Department
of Medicine, Cardiovascular Research Institute, and Institute of Regeneration
Medicine, University of California—San Francisco, San Francisco, California 94143, United States
| | - Randall J. Lee
- Department
of Medicine, Cardiovascular Research Institute, and Institute of Regeneration
Medicine, University of California—San Francisco, San Francisco, California 94143, United States
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Ye S. Putative targeting of matrix metalloproteinase-8 in atherosclerosis. Pharmacol Ther 2015; 147:111-22. [DOI: 10.1016/j.pharmthera.2014.11.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 11/06/2014] [Indexed: 12/20/2022]
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Hughes BG, Schulz R. Targeting MMP-2 to treat ischemic heart injury. Basic Res Cardiol 2014; 109:424. [PMID: 24986221 DOI: 10.1007/s00395-014-0424-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 06/23/2014] [Indexed: 10/24/2022]
Abstract
Matrix metalloproteinase (MMPs) are long understood to be involved in remodeling of the extracellular matrix. However, over the past decade, it has become clear that one of the most ubiquitous MMPs, MMP-2, has numerous intracellular targets in cardiac myocytes. Notably, MMP-2 proteolyzes components of the sarcomere, and its intracellular activity contributes to ischemia-reperfusion injury of the heart. Together with the well documented role played by MMPs in the myocardial remodeling that occurs following myocardial infarction, this has led to great interest in targeting MMPs to treat cardiac ischemic injury. In this review we will describe the expanding understanding of intracellular MMP-2 biology, and how this knowledge may lead to improved treatments for ischemic heart injury. We also critically review the numerous preclinical studies investigating the effects of MMP inhibition in animal models of myocardial infarction and ischemia-reperfusion injury, as well as the recent clinical trials that are part of the effort to translate these results into clinical practice. Acknowledging the disappointing results of past clinical trials of MMP inhibitors for other diseases, we discuss the need for carefully designed preclinical and clinical studies to avoid mistakes that have been previously made. We conclude that inhibition of MMPs, and in particular MMP-2, shows promise as a therapy to prevent the progression from ischemic injury to heart failure. However, it is critical that the full breadth of MMP-2 biology be taken into account as such therapies are developed.
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Affiliation(s)
- Bryan G Hughes
- Departments of Pediatrics and Pharmacology, Mazankowski Alberta Heart Institute/Cardiovascular Research Centre, University of Alberta, 4-62 HMRC, Edmonton, AB, T6G 2S2, Canada
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Imidapril and Enalapril Similarly Inhibit Plasma Matrix Metalloproteinase Activities and Attenuate Left Ventricular Remodeling in Patients With Acute Myocardial Infarction. J Cardiovasc Pharmacol 2014; 63:528-32. [DOI: 10.1097/fjc.0000000000000077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang S, Dehn S, DeBerge M, Rhee KJ, Hudson B, Thorp EB. Phagocyte-myocyte interactions and consequences during hypoxic wound healing. Cell Immunol 2014; 291:65-73. [PMID: 24862542 DOI: 10.1016/j.cellimm.2014.04.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Accepted: 04/14/2014] [Indexed: 12/24/2022]
Abstract
Myocardial infarction (MI), secondary to atherosclerotic plaque rupture and occlusive thrombi, triggers acute margination of inflammatory neutrophils and monocyte phagocyte subsets to the damaged heart, the latter of which may give rise briefly to differentiated macrophage-like or dendritic-like cells. Within the injured myocardium, a primary function of these phagocytic cells is to remove damaged extracellular matrix, necrotic and apoptotic cardiac cells, as well as immune cells that turn over. Recognition of dying cellular targets by phagocytes triggers intracellular signaling, particularly in macrophages, wherein cytokines and lipid mediators are generated to promote inflammation resolution, fibrotic scarring, angiogenesis, and compensatory organ remodeling. These actions cooperate in an effort to preserve myocardial contractility and prevent heart failure. Immune cell function is modulated by local tissue factors that include secreted protease activity, oxidative stress during clinical reperfusion, and hypoxia. Importantly, experimental evidence suggests that monocyte function and phagocytosis efficiency is compromised in the setting of MI risk factors, including hyperlipidemia and ageing, however underlying mechanisms remain unclear. Herein we review seminal phagocyte and cardiac molecular factors that lead to, and culminate in, the recognition and removal of dying injured myocardium, the effects of hypoxia, and their relationship to cardiac infarct size and heart healing.
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Affiliation(s)
- Shuang Zhang
- Department of Pathology and Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Shirley Dehn
- Department of Pathology and Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Matthew DeBerge
- Department of Pathology and Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Ki-Jong Rhee
- Department of Pathology and Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Barry Hudson
- Department of Pathology and Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Edward B Thorp
- Department of Pathology and Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
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Iyer RP, de Castro Brás LE, Jin YF, Lindsey ML. Translating Koch's postulates to identify matrix metalloproteinase roles in postmyocardial infarction remodeling: cardiac metalloproteinase actions (CarMA) postulates. Circ Res 2014; 114:860-71. [PMID: 24577966 DOI: 10.1161/circresaha.114.301673] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The first matrix metalloproteinase (MMP) was described in 1962; and since the 1990s, cardiovascular research has focused on understanding how MMPs regulate many aspects of cardiovascular pathology from atherosclerosis formation to myocardial infarction and stroke. Although much information has been gleaned by these past reports, to a large degree MMP cardiovascular biology remains observational, with few studies homing in on cause and effect relationships. Koch's postulates were first developed in the 19th century as a way to establish microorganism function and were modified in the 20th century to include methods to establish molecular causality. In this review, we outline the concept for establishing a similar approach to determine causality in terms of MMP functions. We use left ventricular remodeling postmyocardial infarction as an example, but this approach will have broad applicability across both the cardiovascular and the MMP fields.
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Affiliation(s)
- Rugmani Padmanabhan Iyer
- From the San Antonio Cardiovascular Proteomics Center and Mississippi Center for Heart Research (R.P.I., L.E.d.C.B., Y.-F.J., M.L.L.) and Department of Biophysics and Physiology (R.P.I., L.E.d.C.B., M.L.L.), University of Mississippi Medical Center, Jackson; Department of Electrical and Computer Engineering, University of Texas at San Antonio (Y.-F.J.); and Research Service, G.V. (Sonny) Department of Physiology and Biophysics, Montgomery Veterans Affairs Medical Center, Jackson, MS (M.L.L.)
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Jia ZB, Tian H, Kang K, Miao HZ, Liu KY, Jiang SL, Wang LP. Expression of the tissue inhibitor of metalloproteinase-3 by transplanted VSMCs modifies heart structure and function after myocardial infarction. Transpl Immunol 2014; 30:149-58. [PMID: 24727088 DOI: 10.1016/j.trim.2014.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 03/28/2014] [Accepted: 03/31/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVES Extracellular matrix (ECM) remodelling is a critical aspect of cardiac remodelling following myocardial infarction. Tissue inhibitors of metalloproteinases (TIMPs) are physiological inhibitors of matrix metalloproteinases (MMPs) that degrade the ECM proteins. TIMP-3 is highly expressed in the heart and is markedly downregulated in patients with ischaemic cardiomyopathy. Cell-based gene therapy can enhance the effects of cell transplantation by temporally and spatially regulating the release of the gene product. The purpose of this study was to investigate the role of TIMP-3 gene-transfected vascular smooth muscle cells (VSMCs) in modifying heart structure and function in rats when transplanted 3days after myocardial infarction (MI). METHODS Anesthetised rats were subjected to coronary artery ligation followed 3days later by thoracotomy and transplantation of TIMP-3 gene-transfected VSMCs, untransfected VSMCs or medium injected directly into the ischaemic myocardium. We assessed left ventricular structure and function by echocardiography and morphometry, and measured the levels of myocardial matrix metalloproteinase-2 and -9 (MMP-2, MMP-9), TIMP-3 and tumour necrosis factor-α (TNF-α) at 4weeks post-myocardial infarction. RESULTS Transplantation of TIMP-3 gene-transfected VSMCs and untransfected VSMCs significantly decreased scar expansion and ventricular dilatation 25days post-transplantation (4weeks after MI). MMPs and TNF-α levels were reduced in the transplantation groups when compared to the group that was given an injection of medium only. Transplantation of TIMP-3 gene-transfected VSMCs was more effective in preventing progressive cardiac dysfunction, ventricular dilatation and in reducing MMP-2, MMP-9 and TNF-α levels when compared to the transplantation of untransfected VSMCs. CONCLUSIONS TIMP-3 gene transfection was associated with attenuated left ventricular dilation and recovery of systolic function after MI compared with the control. TIMP-3 transfection enhanced the effects of transplanted VSMCs in rats by inhibiting matrix degradation and inflammatory cytokine expression, leading to improved myocardial remodelling.
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Affiliation(s)
- Zhi-Bo Jia
- Department of Cardiovascular Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hai Tian
- Department of Cardiovascular Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Kai Kang
- Department of Cardiovascular Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hong-Zhi Miao
- Department of Cardiothoracic Surgery, First Hospital of Qiqihaer, Qiqihaer, China
| | - Kai-Yu Liu
- Department of Cardiovascular Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shu-Lin Jiang
- Department of Cardiovascular Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Li-Ping Wang
- Department of Geriatrics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
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Matrix metalloproteinases 2 and 9 as diagnostic markers in the progression to Chagas cardiomyopathy. Am Heart J 2013; 165:558-66. [PMID: 23537973 DOI: 10.1016/j.ahj.2013.01.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Accepted: 01/03/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND Infection with the Trypanosoma cruzi parasite is endemic in parts of Central and South America. Approximately 30% of those infected develop Chagas cardiomyopathy, the most common cause of heart failure in this region. No suitable biomarker is available that reflects the evolution of the disease. Although there is substantial evidence of a strong inflammatory reaction following infection that could activate matrix metalloproteinases (MMPs), their role in the development of Chagas cardiomyopathy is unknown. METHODS A cross-sectional study was conducted in Bucaramanga, Colombia, from 2002 to 2006, including 144 patients at different stages of Chagas disease and 44 control patients. The potential enzyme activities of MMP-2 and MMP-9 in plasma samples were determined by gelatin zymography. Clinical data including T cruzi serology, electrocardiograms, and echocardiograms were recorded for all patients. RESULTS Densitometric analysis of potential enzyme activities in plasma samples showed a significant increase of 72-kd MMP-2 (P < .001) and 92-kd MMP-9 (P < .001) in T cruzi seropositive patients compared with control subjects. Matrix metalloproteinase 9 showed significantly increased activity in patients with abnormal electrocardiogram (P < .004) and with dilated cardiomyopathy compared (P < .001) with controls. Analysis of the MMP-2 and MMP-9 results in relation to clinical data revealed that abnormal heart relaxation correlated positively with high MMP-2 levels in patients with dilated cardiomyopathy (r = 0.75, P < .01). CONCLUSIONS Plasma MMP-2 and MMP-9 both appear to be useful biomarkers for detecting the advent and progression of cardiomyopathy in T cruzi-infected individuals.
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Jain P, Saravanan C, Singh SK. Sulphonamides: Deserving class as MMP inhibitors? Eur J Med Chem 2012; 60:89-100. [PMID: 23287054 DOI: 10.1016/j.ejmech.2012.10.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 09/26/2012] [Accepted: 10/02/2012] [Indexed: 12/14/2022]
Abstract
The importance of sulphonamide moiety in medicinal chemistry cannot be ignored as it constitutes an important class of extensively used drugs. Recently, sulphonamides have also been reported for their matrix metalloproteinase (MMP) inhibitory activity. MMPs are calcium- and zinc-dependent endopeptidases, involved in both inter- and intra-cellular activity. This review documents the emergence of sulphonamides as matrix metalloproteinase inhibitors (MMPIs) from the first generation to the recent third generation MMPIs, their mode of action - how sulphonamides act on MMPs? as well as the structure activity relationship along with their therapeutic uses in chronic obstructive pulmonary disease (COPD), ulcer, asthma, arthritis and cancer. From this review, readers can get answer for the question- is sulphonamides a potential class of MMPIs?
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Affiliation(s)
- Pranjali Jain
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutics, Indian Institute of Technology (BHU), Varanasi 221005, India
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43
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Mishra A, Srivastava A, Mittal T, Garg N, Mittal B. Association of matrix metalloproteinases (MMP2, MMP7 and MMP9) genetic variants with left ventricular dysfunction in coronary artery disease patients. Clin Chim Acta 2012; 413:1668-74. [DOI: 10.1016/j.cca.2012.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 04/13/2012] [Accepted: 05/16/2012] [Indexed: 01/06/2023]
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Macrophages in the infarct: fiery friends or friendly fire? J Mol Cell Cardiol 2012; 53:591-2. [PMID: 22975014 DOI: 10.1016/j.yjmcc.2012.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 09/01/2012] [Accepted: 09/04/2012] [Indexed: 11/19/2022]
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Plasma fractionation enriches post-myocardial infarction samples prior to proteomics analysis. INTERNATIONAL JOURNAL OF PROTEOMICS 2012; 2012:397103. [PMID: 22778955 PMCID: PMC3385641 DOI: 10.1155/2012/397103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 04/09/2012] [Indexed: 11/25/2022]
Abstract
Following myocardial infarction (MI), matrix metalloproteinase-9 (MMP-9) levels increase, and MMP-9 deletion improves post-MI remodeling of the left ventricle (LV). We provide here a technical report on plasma-analysis from wild type (WT) and MMP-9 null mice using fractionation and mass-spectrometry-based proteomics. MI was induced by coronary artery ligation in male WT and MMP-9 null mice (4–8 months old; n = 3/genotype). Plasma was collected on days 0 (pre-) and 1 post-MI. Plasma proteins were fractionated and proteins in the lowest (fraction 1) and highest (fraction 12) molecular weight fractions were separated by 1-D SDS-PAGE, digested in-gel with trypsin and analyzed by HPLC-ESI-MS/MS on an Orbitrap Velos. We tried five different fractionation protocols, before reaching an optimized protocol that allowed us to identify over 100 proteins. Serum amyloid A substantially increased post-MI in both genotypes, while alpha-2 macroglobulin increased only in the null samples. In fraction 12, extracellular matrix proteins were observed only post-MI. Interestingly, fibronectin-1, a substrate of MMP-9, was identified at both day 0 and day 1 post-MI in the MMP-9 null mice but was only identified post-MI in the WT mice. In conclusion, plasma fractionation offers an improved depletion-free method to evaluate plasma changes following MI.
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Dai DF, Chen T, Johnson SC, Szeto H, Rabinovitch PS. Cardiac aging: from molecular mechanisms to significance in human health and disease. Antioxid Redox Signal 2012; 16:1492-526. [PMID: 22229339 PMCID: PMC3329953 DOI: 10.1089/ars.2011.4179] [Citation(s) in RCA: 219] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cardiovascular diseases (CVDs) are the major causes of death in the western world. The incidence of cardiovascular disease as well as the rate of cardiovascular mortality and morbidity increase exponentially in the elderly population, suggesting that age per se is a major risk factor of CVDs. The physiologic changes of human cardiac aging mainly include left ventricular hypertrophy, diastolic dysfunction, valvular degeneration, increased cardiac fibrosis, increased prevalence of atrial fibrillation, and decreased maximal exercise capacity. Many of these changes are closely recapitulated in animal models commonly used in an aging study, including rodents, flies, and monkeys. The application of genetically modified aged mice has provided direct evidence of several critical molecular mechanisms involved in cardiac aging, such as mitochondrial oxidative stress, insulin/insulin-like growth factor/PI3K pathway, adrenergic and renin angiotensin II signaling, and nutrient signaling pathways. This article also reviews the central role of mitochondrial oxidative stress in CVDs and the plausible mechanisms underlying the progression toward heart failure in the susceptible aging hearts. Finally, the understanding of the molecular mechanisms of cardiac aging may support the potential clinical application of several "anti-aging" strategies that treat CVDs and improve healthy cardiac aging.
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Affiliation(s)
- Dao-Fu Dai
- Department of Pathology, University of Washington, Seattle, Washington, USA
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Fomovsky GM, Clark SA, Parker KM, Ailawadi G, Holmes JW. Anisotropic reinforcement of acute anteroapical infarcts improves pump function. Circ Heart Fail 2012; 5:515-22. [PMID: 22665716 DOI: 10.1161/circheartfailure.111.965731] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND We hypothesize that a therapy that improves left ventricular (LV) pump function early after infarction should decrease the need for compensation through sympathetic activation and dilation, thereby reducing the risk of developing heart failure. The mechanical properties of healing myocardial infarcts are an important determinant of LV function, yet improving function by altering infarct properties has proven unexpectedly difficult. Using a computational model, we recently predicted that stiffening a large anterior infarct anisotropically (in only one direction) would improve LV function, whereas isotropic stiffening, the focus of previous studies and therapies, would not. The goal of this study was to test the novel strategy of anisotropic infarct reinforcement. METHODS AND RESULTS We tested the effects of anisotropic infarct reinforcement in 10 open-chest dogs with large anteroapical infarcts that depressed LV pump function. We measured regional mechanics, LV volumes, and cardiac output at a range of preloads at baseline, 45 minutes after coronary ligation (ischemia), and 30 minutes later, after surgical reinforcement in the longitudinal direction (anisotropic). Ischemia shifted the end-systolic pressure-volume relationship and cardiac output curves rightward, decreasing cardiac output at matched end-diastolic pressure by 44%. Anisotropic reinforcement significantly improved systolic function without impairing diastolic function, recovering half the deficit in overall LV function. CONCLUSIONS We conclude that anisotropic reinforcement is a promising new approach to improving LV function after a large myocardial infarction.
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Affiliation(s)
- Gregory M Fomovsky
- Departments of Biomedical Engineering, Medicine, and Surgery and the Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, VA 22908, USA
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Zhang Z, Sun K, Saloner DA, Wallace AW, Ge L, Baker AJ, Guccione JM, Ratcliffe MB. The benefit of enhanced contractility in the infarct borderzone: a virtual experiment. Front Physiol 2012; 3:86. [PMID: 22509168 PMCID: PMC3321638 DOI: 10.3389/fphys.2012.00086] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Accepted: 03/22/2012] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Contractile function in the normally perfused infarct borderzone (BZ) is depressed. However, the impact of reduced BZ contractility on left ventricular (LV) pump function is unknown. As a consequence, there have been no therapies specifically designed to improve BZ contractility. We tested the hypothesis that an improvement in borderzone contractility will improve LV pump function. METHODS From a previously reported study, magnetic resonance imaging (MRI) images with non-invasive tags were used to calculate 3D myocardial strain in five sheep 16 weeks after anteroapical myocardial infarction. Animal-specific finite element (FE) models were created using MRI data and LV pressure obtained at early diastolic filling. Analysis of borderzone function using those FE models has been previously reported. Chamber stiffness, pump function (Starling's law) and stress in the fiber, cross fiber, and circumferential directions were calculated. Animal-specific FE models were performed for three cases: (a) impaired BZ contractility (INJURED); (b) BZ-contractility fully restored (100% BZ IMPROVEMENT); or (c) BZ-contractility partially restored (50% BZ IMPROVEMENT). RESULTS 100% BZ IMPROVEMENT and 50% BZ IMPROVEMENT both caused an upward shift in the Starling relationship, resulting in a large (36 and 26%) increase in stroke volume at LVP(ED) = 20 mmHg (8.0 ml, p < 0.001). Moreover, there were a leftward shift in the end-systolic pressure volume relationship, resulting in a 7 and 5% increase in LVP(ES) at 110 mmHg (7.7 ml, p < 0.005). It showed that even 50% BZ IMPROVEMENT was sufficient to drive much of the calculated increase in function. CONCLUSION Improved borderzone contractility has a beneficial effect on LV pump function. Partial improvement of borderzone contractility was sufficient to drive much of the calculated increase in function. Therapies specifically designed to improve borderzone contractility should be developed.
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Affiliation(s)
- Zhihong Zhang
- Department of Surgery, University of California San Francisco San Francisco, CA, USA
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Koenig GC, Rowe RG, Day SM, Sabeh F, Atkinson JJ, Cooke KR, Weiss SJ. MT1-MMP-dependent remodeling of cardiac extracellular matrix structure and function following myocardial infarction. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 180:1863-78. [PMID: 22464947 DOI: 10.1016/j.ajpath.2012.01.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 01/19/2012] [Accepted: 01/26/2012] [Indexed: 01/23/2023]
Abstract
The myocardial extracellular matrix (ECM), an interwoven meshwork of proteins, glycoproteins, proteoglycans, and glycosaminoglycans that is dominated by polymeric fibrils of type I collagen, serves as the mechanical scaffold on which myocytes are arrayed for coordinated and synergistic force transduction. Following ischemic injury, cardiac ECM remodeling is initiated via localized proteolysis, the bulk of which has been assigned to matrix metalloproteinase (MMP) family members. Nevertheless, the key effector(s) of myocardial type I collagenolysis both in vitro and in vivo have remained unidentified. In this study, using cardiac explants from mice deficient in each of the major type I collagenolytic MMPs, including MMP-13, MMP-8, MMP-2, MMP-9, or MT1-MMP, we identify the membrane-anchored MMP, MT1-MMP, as the dominant collagenase that is operative within myocardial tissues in vitro. Extending these observations to an in vivo setting, mice heterozygous for an MT1-MMP-null allele display a distinct survival advantage and retain myocardial function relative to wild-type littermates in an experimental model of myocardial infarction, effects associated with preservation of the myocardial type I collagen network as a consequence of the decreased collagenolytic potential of cardiac fibroblasts. This study identifies MT1-MMP as a key MMP responsible for effecting postinfarction cardiac ECM remodeling and cardiac dysfunction.
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Affiliation(s)
- Gerald C Koenig
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109-2216, USA
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50
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Turner NA, Porter KE. Regulation of myocardial matrix metalloproteinase expression and activity by cardiac fibroblasts. IUBMB Life 2012; 64:143-50. [PMID: 22215527 DOI: 10.1002/iub.594] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 10/17/2011] [Indexed: 12/13/2022]
Abstract
Cardiac fibroblasts (CF) play a key role in orchestrating the structural remodeling of the myocardium in response to injury or stress, in part through direct regulation of extracellular matrix (ECM) turnover. The matrix metalloproteinases (MMPs) are a family of over 25 zinc-dependent proteases that together have the capacity to degrade all the protein components of the ECM. Fibroblasts are a major source of several MMPs in the heart, thereby representing a viable therapeutic target for regulating ECM turnover in cardiac pathologies characterized by adverse remodeling, such as myocardial infarction, cardiomyopathy, hypertension and heart failure. This review summarizes current knowledge on the identity and regulation of MMPs expressed by CF and discusses future directions for reducing adverse myocardial remodeling by modulating the expression and/or activity of CF-derived MMPs.
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Affiliation(s)
- Neil A Turner
- Division of Cardiovascular Medicine, Leeds Institute of Genetics, Health and Therapeutics (LIGHT) and Multidisciplinary Cardiovascular Research Centre (MCRC), University of Leeds, Leeds, UK.
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