1
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Ruppert M, Korkmaz-Icöz S, Benczik B, Ágg B, Nagy D, Bálint T, Sayour AA, Oláh A, Barta BA, Benke K, Ferdinandy P, Karck M, Merkely B, Radovits T, Szabó G. Pressure overload-induced systolic heart failure is associated with characteristic myocardial microRNA expression signature and post-transcriptional gene regulation in male rats. Sci Rep 2023; 13:16122. [PMID: 37752166 PMCID: PMC10522609 DOI: 10.1038/s41598-023-43171-1] [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: 02/06/2023] [Accepted: 09/20/2023] [Indexed: 09/28/2023] Open
Abstract
Although systolic function characteristically shows gradual impairment in pressure overload (PO)-evoked left ventricular (LV) hypertrophy (LVH), rapid progression to congestive heart failure (HF) occurs in distinct cases. The molecular mechanisms for the differences in maladaptation are unknown. Here, we examined microRNA (miRNA) expression and miRNA-driven posttranscriptional gene regulation in the two forms of PO-induced LVH (with/without systolic HF). PO was induced by aortic banding (AB) in male Sprague-Dawley rats. Sham-operated animals were controls. The majority of AB animals demonstrated concentric LVH and slightly decreased systolic function (termed as ABLVH). In contrast, in some AB rats severely reduced ejection fraction, LV dilatation and increased lung weight-to-tibial length ratio was noted (referred to as ABHF). Global LV miRNA sequencing revealed fifty differentially regulated miRNAs in ABHF compared to ABLVH. Network theoretical miRNA-target analysis predicted more than three thousand genes with miRNA-driven dysregulation between the two groups. Seventeen genes with high node strength value were selected for target validation, of which five (Fmr1, Zfpm2, Wasl, Ets1, Atg16l1) showed decreased mRNA expression in ABHF by PCR. PO-evoked systolic HF is associated with unique miRNA alterations, which negatively regulate the mRNA expression of Fmr1, Zfmp2, Wasl, Ets1 and Atg16l1.
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Affiliation(s)
- Mihály Ruppert
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary.
| | - Sevil Korkmaz-Icöz
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
- Department of Cardiac Surgery, University Hospital Halle (Saale), Halle, Germany
| | - Bettina Benczik
- Pharmahungary Group, Szeged, Hungary
- Cardiometabolic and HUN-REN-SU System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Bence Ágg
- Pharmahungary Group, Szeged, Hungary
- Cardiometabolic and HUN-REN-SU System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Dávid Nagy
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Tímea Bálint
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Alex Ali Sayour
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Attila Oláh
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Bálint András Barta
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Kálmán Benke
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Péter Ferdinandy
- Pharmahungary Group, Szeged, Hungary
- Cardiometabolic and HUN-REN-SU System Pharmacology Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Matthias Karck
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
| | - Béla Merkely
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Tamás Radovits
- Experimental Research Laboratory, Heart and Vascular Center, Semmelweis University, Városmajor u. 68, 1122, Budapest, Hungary
| | - Gábor Szabó
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
- Department of Cardiac Surgery, University Hospital Halle (Saale), Halle, Germany
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2
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Eaton DM, Berretta RM, Lynch JE, Travers JG, Pfeiffer RD, Hulke ML, Zhao H, Hobby ARH, Schena G, Johnson JP, Wallner M, Lau E, Lam MPY, Woulfe KC, Tucker NR, McKinsey TA, Wolfson MR, Houser SR. Sex-specific responses to slow progressive pressure overload in a large animal model of HFpEF. Am J Physiol Heart Circ Physiol 2022; 323:H797-H817. [PMID: 36053749 PMCID: PMC9550571 DOI: 10.1152/ajpheart.00374.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/22/2022]
Abstract
Approximately 50% of all heart failure (HF) diagnoses can be classified as HF with preserved ejection fraction (HFpEF). HFpEF is more prevalent in females compared with males, but the underlying mechanisms are unknown. We previously showed that pressure overload (PO) in male felines induces a cardiopulmonary phenotype with essential features of human HFpEF. The goal of this study was to determine if slow progressive PO induces distinct cardiopulmonary phenotypes in females and males in the absence of other pathological stressors. Female and male felines underwent aortic constriction (banding) or sham surgery after baseline echocardiography, pulmonary function testing, and blood sampling. These assessments were repeated at 2 and 4 mo postsurgery to document the effects of slow progressive pressure overload. At 4 mo, invasive hemodynamic studies were also performed. Left ventricle (LV) tissue was collected for histology, myofibril mechanics, extracellular matrix (ECM) mass spectrometry, and single-nucleus RNA sequencing (snRNAseq). The induced pressure overload (PO) was not different between sexes. PO also induced comparable changes in LV wall thickness and myocyte cross-sectional area in both sexes. Both sexes had preserved ejection fraction, but males had a slightly more robust phenotype in hemodynamic and pulmonary parameters. There was no difference in LV fibrosis and ECM composition between banded male and female animals. LV snRNAseq revealed changes in gene programs of individual cell types unique to males and females after PO. Based on these results, both sexes develop cardiopulmonary dysfunction but the phenotype is somewhat less advanced in females.NEW & NOTEWORTHY We performed a comprehensive assessment to evaluate the effects of slow progressive pressure overload on cardiopulmonary function in a large animal model of heart failure with preserved ejection fraction (HFpEF) in males and females. Functional and structural assessments were performed at the organ, tissue, cellular, protein, and transcriptional levels. This is the first study to compare snRNAseq and ECM mass spectrometry of HFpEF myocardium from males and females. The results broaden our understanding of the pathophysiological response of both sexes to pressure overload. Both sexes developed a robust cardiopulmonary phenotype, but the phenotype was equal or a bit less robust in females.
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Affiliation(s)
- Deborah M Eaton
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Remus M Berretta
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Jacqueline E Lynch
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Pediatrics, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- CENTRe: Consortium for Environmental and Neonatal Therapeutics Research, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Joshua G Travers
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research & Translation, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | | | - Huaqing Zhao
- Center for Biostatistics and Epidemiology, Department of Biomedical Education and Data Science, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Alexander R H Hobby
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Giana Schena
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Jaslyn P Johnson
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Markus Wallner
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Division of Cardiology, Medical University of Graz, Graz, Austria
| | - Edward Lau
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research & Translation, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Maggie P Y Lam
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research & Translation, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Kathleen C Woulfe
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research & Translation, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Nathan R Tucker
- Masonic Medical Research Institute, Utica, New York
- Cardiovascular Disease Initiative, Broad Institute of MIT and Harvard, Boston, Massachusetts
| | - Timothy A McKinsey
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Consortium for Fibrosis Research & Translation, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Marla R Wolfson
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Pediatrics, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- CENTRe: Consortium for Environmental and Neonatal Therapeutics Research, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
| | - Steven R Houser
- Cardiovascular Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
- Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania
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3
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Ruppert M, Barta BA, Korkmaz-Icöz S, Loganathan S, Oláh A, Sayour AA, Benke K, Nagy D, Bálint T, Karck M, Schilling O, Merkely B, Radovits T, Szabó G. Sex similarities and differences in the reverse and anti-remodeling effect of pressure unloading therapy in a rat model of aortic banding and debanding. Am J Physiol Heart Circ Physiol 2022; 323:H204-H222. [PMID: 35687503 DOI: 10.1152/ajpheart.00654.2021] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Investigating the effect of sex on pressure unloading therapy in a clinical scenario is limited by several non-standardized factors. Hence, we sought to study sex-related similarities and differences under laboratory conditions. METHODS Pressure overload was induced in male and female rats by aortic banding (AB) for 6 and 12 weeks. Age-matched sham operated animals served as controls. Pressure unloading was performed by aortic debanding at week 6. Different aspects of myocardial remodeling were characterized by echocardiography, pressure-volume analysis, histology, qRT-PCR and explorative proteomics. RESULTS Hypertrophy, increased fetal gene expression, interstitial fibrosis, and prolonged active relaxation were noted in the AB groups at week 6 in both sexes. However, decompensation of systolic function and further deterioration of diastolic function only occurred in male AB rats at week 12. AB induced similar proteomic alterations in both sexes at week 6, while characteristic differences were found at week 12. After debanding, regression of hypertrophy and recovery of diastolic function took place to a similar extent in both sexes. Nevertheless, fibrosis, transcription of β-to-α myosin-heavy chain ratio, and myocardial proteomic alterations were reduced to a greater degree in females compared to males. Debanding exposed anti-remodeling properties in both sexes, and prevented the functional decline in males. CONCLUSIONS Female sex is associated with greater reversibility of fibrosis, fetal gene expression, and proteomic alterations. Nevertheless, pressure unloading exposes a more pronounced anti-remodeling effect on the functional level in males, which is attributed to the more progressive functional deterioration in AB animals.
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Affiliation(s)
- Mihály Ruppert
- Heart and Vascular Centre, Semmelweis University, Budapest, Pest, Hungary
| | - Bálint András Barta
- Heart and Vascular Centre, Semmelweis University; Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg Medical Center; Faculty of Biology, University of Freiburg, Budapest
| | - Sevil Korkmaz-Icöz
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | | | - Attila Oláh
- Heart and Vascular Centre, Semmelweis University, Budapest, Hungary
| | | | - Kalman Benke
- Heart and Vascular Centre, Semmelweis University; Department of Cardiac Surgery, University Hospital Halle
| | - Dávid Nagy
- Heart and Vascular Centre, Semmelweis University, Budapest, Pest, Hungary
| | - Tímea Bálint
- Heart and Vascular Centre, Semmelweis University, Budapest, Pest, Hungary
| | - Matthias Karck
- Department of Cardiac Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Oliver Schilling
- Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg Medical Center, Freiburg, Baden-Württemberg, Germany
| | - Béla Merkely
- Heart and Vascular Centre, Semmelweis University, Budapest, Hungary
| | - Tamás Radovits
- Heart and Vascular Centre, Semmelweis University, Budapest, Hungary
| | - Gábor Szabó
- Department of Cardiac Surgery, University Hospital Heidelberg; Department of Cardiac Surgery, University Hospital Halle, Germany
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4
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Cheng TC, Tabima DM, Caggiano LR, Frump AL, Hacker TA, Eickhoff JC, Lahm T, Chesler NC. Sex differences in right ventricular adaptation to pressure overload in a rat model. J Appl Physiol (1985) 2022; 132:888-901. [PMID: 35112927 PMCID: PMC8934674 DOI: 10.1152/japplphysiol.00175.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
With severe right ventricular (RV) pressure overload, women demonstrate better clinical outcomes compared with men. The mechanoenergetic mechanisms underlying this protective effect, and their dependence on female endogenous sex hormones, remain unknown. To investigate these mechanisms and their impact on RV systolic and diastolic functional adaptation, we created comparable pressure overload via pulmonary artery banding (PAB) in intact male and female Wistar rats and ovariectomized (OVX) female rats. At 8 wk after surgery, right heart catheterization demonstrated increased RV energy input [indexed pressure-volume area (iPVA)] in all PAB groups, with the greatest increase in intact females. PAB also increased RV energy output [indexed stroke or external work (iEW)] in all groups, again with the greatest increase in intact females. In contrast, PAB only increased RV contractility-indexed end-systolic elastance (iEes)] in females. Despite these sex-dependent differences, no statistically significant effects were observed in the ratio of RV energy output to input (mechanical efficiency) or in mechanoenergetic cost to pump blood with pressure overload. These metrics were similarly unaffected by loss of endogenous sex hormones in females. Also, despite sex-dependent differences in collagen content and organization with pressure overload, decreases in RV compliance and relaxation time constant (tau Weiss) were not determined to be sex dependent. Overall, despite sex-dependent differences in RV contractile and fibrotic responses, RV mechanoenergetics for this degree and duration of pressure overload are comparable between sexes and suggest a homeostatic target.NEW & NOTEWORTHY Sex differences in right ventricular mechanical efficiency and energetic adaptation to increased right ventricular afterload were measured. Despite sex-dependent differences in contractile and fibrotic responses, right ventricular mechanoenergetic adaptation was comparable between the sexes, suggesting a homeostatic target.
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Affiliation(s)
- Tik-Chee Cheng
- 1Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Diana M. Tabima
- 1Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Laura R. Caggiano
- 2University of California, Irvine Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, Irvine, California
| | - Andrea L. Frump
- 3Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Timothy A. Hacker
- 4Cardiovascular Physiology Core Facility, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin
| | - Jens C. Eickhoff
- 5Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, Wisconsin
| | - Tim Lahm
- 3Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana,6Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, Colorado,7Richard L. Roudebush Department of Veterans Affairs Medical Center, Indianapolis, Indiana
| | - Naomi C. Chesler
- 1Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin,2University of California, Irvine Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, Irvine, California,8Department of Biomedical Engineering, University of California, Irvine, California
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5
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Barta BA, Ruppert M, Fröhlich KE, Cosenza-Contreras M, Oláh A, Sayour AA, Kovács K, Karvaly GB, Biniossek M, Merkely B, Schilling O, Radovits T. Sex-related differences of early cardiac functional and proteomic alterations in a rat model of myocardial ischemia. J Transl Med 2021; 19:507. [PMID: 34895263 PMCID: PMC8666068 DOI: 10.1186/s12967-021-03164-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 11/23/2021] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Reduced cardiovascular risk in premenopausal women has been the focus of research in recent decades. Previous hypothesis-driven experiments have highlighted the role of sex hormones on distinct inflammatory responses, mitochondrial proteins, extracellular remodeling and estrogen-mediated cardioprotective signaling pathways related to post-ischemic recovery, which were associated with better cardiac functional outcomes in females. We aimed to investigate the early, sex-specific functional and proteomic changes following myocardial ischemia in an unbiased approach. METHODS Ischemia was induced in male (M-Isch) and female (F-Isch) rats with sc. injection of isoproterenol (85 mg/kg) daily for 2 days, while controls (M-Co, F-Co) received sc. saline solution. At 48 h after the first injection pressure-volume analysis was carried out to assess left ventricular function. FFPE tissue slides were scanned and analyzed digitally, while myocardial proteins were quantified by liquid chromatography-tandem mass spectrometry (LC-MS/MS) using isobaric labeling. Concentrations of circulating steroid hormones were measured with LC-MS/MS. Feature selection (PLS and PLS-DA) was used to examine associations among functional, proteomic and hormonal datasets. RESULTS Induction of ischemia resulted in 38% vs 17% mortality in M-Isch and F-Isch respectively. The extent of ischemic damage to surviving rats was comparable between the sexes. Systolic dysfunction was more pronounced in males, while females developed a more severe impairment of diastolic function. 2224 proteins were quantified, with 520 showing sex-specific differential regulation. Our analysis identified transcriptional, cytoskeletal, contractile, and mitochondrial proteins, molecular chaperones and the extracellular matrix as sources of disparity between the sexes. Bioinformatics highlighted possible associations of estrogens and their metabolites with early functional and proteomic alterations. CONCLUSIONS Our study has highlighted sex-specific alterations in systolic and diastolic function shortly after ischemia, and provided a comprehensive look at the underlying proteomic changes and the influence of estrogens and their metabolites. According to our bioinformatic analysis, inflammatory, mitochondrial, chaperone, cytoskeletal, extracellular and matricellular proteins are major sources of intersex disparity, and may be promising targets for early sex-specific pharmacologic interventions.
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Affiliation(s)
- Bálint András Barta
- Experimental Research Laboratory, Heart and Vascular Center, Faculty of Medicine, Semmelweis University, Városmajor u. 68, Budapest, 1122, Hungary. .,Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg Medical Center, Freiburg, Germany. .,Faculty of Biology, University of Freiburg, Freiburg, Germany.
| | - Mihály Ruppert
- Experimental Research Laboratory, Heart and Vascular Center, Faculty of Medicine, Semmelweis University, Városmajor u. 68, Budapest, 1122, Hungary
| | - Klemens Erwin Fröhlich
- Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg Medical Center, Freiburg, Germany.,Faculty of Biology, University of Freiburg, Freiburg, Germany.,Spemann Graduate School of Biology and Medicine, University of Freiburg, Freiburg, Germany
| | - Miguel Cosenza-Contreras
- Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg Medical Center, Freiburg, Germany.,Faculty of Biology, University of Freiburg, Freiburg, Germany.,MeInBio Graduate School, University of Freiburg, Freiburg, Germany
| | - Attila Oláh
- Experimental Research Laboratory, Heart and Vascular Center, Faculty of Medicine, Semmelweis University, Városmajor u. 68, Budapest, 1122, Hungary
| | - Alex Ali Sayour
- Experimental Research Laboratory, Heart and Vascular Center, Faculty of Medicine, Semmelweis University, Városmajor u. 68, Budapest, 1122, Hungary
| | - Krisztián Kovács
- Department of Laboratory Medicine, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Gellért Balázs Karvaly
- Department of Laboratory Medicine, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Martin Biniossek
- Center for Biological Systems Analysis, University of Freiburg, Freiburg, Germany
| | - Béla Merkely
- Experimental Research Laboratory, Heart and Vascular Center, Faculty of Medicine, Semmelweis University, Városmajor u. 68, Budapest, 1122, Hungary
| | - Oliver Schilling
- Institute of Surgical Pathology, Faculty of Medicine, University of Freiburg Medical Center, Freiburg, Germany
| | - Tamás Radovits
- Experimental Research Laboratory, Heart and Vascular Center, Faculty of Medicine, Semmelweis University, Városmajor u. 68, Budapest, 1122, Hungary
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6
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Lakatos BK, Ruppert M, Tokodi M, Oláh A, Braun S, Karime C, Ladányi Z, Sayour AA, Barta BA, Merkely B, Radovits T, Kovács A. Myocardial work index: a marker of left ventricular contractility in pressure- or volume overload-induced heart failure. ESC Heart Fail 2021; 8:2220-2231. [PMID: 33754487 PMCID: PMC8120402 DOI: 10.1002/ehf2.13314] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/15/2021] [Accepted: 03/02/2021] [Indexed: 12/11/2022] Open
Abstract
Aims While global longitudinal strain (GLS) is considered to be a sensitive marker of left ventricular (LV) function, it is significantly influenced by loading conditions. We hypothesized that global myocardial work index (GMWI), a novel marker of LV function, may show better correlation with load‐independent markers of LV contractility in rat models of pressure‐induced or volume overload‐induced heart failure. Methods and results Male Wistar rats underwent either transverse aortic constriction (TAC; n = 12) or aortocaval fistula creation (ACF; n = 12), inducing LV pressure or volume overload, respectively. Sham procedures were performed to establish control groups (n = 12/12). Echocardiographic loops were obtained to determine GLS and GMWI. Pressure‐volume analysis with transient occlusion of the inferior caval vein was carried out to calculate preload recruitable stroke work (PRSW), a load‐independent ‘gold‐standard’ parameter of LV contractility. Myocardial samples were collected to assess interstitial and perivascular fibrosis area and also myocardial atrial‐type natriuretic peptide (ANP) and brain‐type natriuretic peptide (BNP) relative mRNA expression. Compared with controls, GLS was substantially lower in the TAC group (−7.0 ± 2.8 vs. −14.5 ± 2.5%; P < 0.001) and was only mildly reduced in the ACF group (−13.2 ± 2.4 vs. −15.4 ± 2.0%, P < 0.05). In contrast with these findings, PRSW and GMWI were comparable with sham in TAC (110 ± 26 vs. 116 ± 68 mmHg; 1687 ± 275 mmHg% vs. 1537 ± 662 mmHg%; both P = NS), while it was found to be significantly reduced in ACF (58 ± 14 vs. 111 ± 40 mmHg; 1328 ± 411 vs. 1934 ± 308 mmHg%, both P < 0.01). In the pooled population, GMWI (r = 0.70; P < 0.001) but not GLS (r = −0.23; P = 0.12) showed a strong correlation with PRSW. GLS correlated with interstitial (r = 0.61; P < 0.001) and perivascular fibrosis area (r = 0.54; P < 0.001), and also with myocardial ANP (r = 0.85; P < 0.001) and BNP relative mRNA expression (r = 0.75; P < 0.001), while GMWI demonstrated no or only marginal correlation with these parameters. Conclusions Being significantly influenced by loading conditions, GLS may not be a reliable marker of LV contractility in heart failure induced by pressure or volume overload. GMWI better reflects contractility in haemodynamic overload states, making it a more robust marker of systolic function, while GLS should be considered as an integrative marker, incorporating systolic function, haemodynamic loading state, and adverse tissue remodelling of the LV.
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Affiliation(s)
- Bálint Károly Lakatos
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Mihály Ruppert
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Márton Tokodi
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Attila Oláh
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Szilveszter Braun
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Christian Karime
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Zsuzsanna Ladányi
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Alex Ali Sayour
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Bálint András Barta
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
| | - Attila Kovács
- Heart and Vascular Center, Semmelweis University, Városmajor St. 68, Budapest, H-1122, Hungary
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7
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Kakimoto Y, Asakura K, Osawa M. Cutoff value for hypertrophic heart weight in the Japanese population. Leg Med (Tokyo) 2020; 48:101831. [PMID: 33370634 DOI: 10.1016/j.legalmed.2020.101831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/08/2020] [Accepted: 12/15/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Cardiac hypertrophy is a clinical risk factor for cardiovascular death (CVD) frequently recorded in autopsy reports, but the diagnostic criteria for the condition have not been clearly-established for autopsy. This study aimed to estimate the cutoff value for hypertrophic heart weight that can efficiently assist the postmortem diagnosis of CVD. METHODS We analyzed accumulated autopsy data from 3534 individuals aged 0-101 years. RESULTS We found that heart weight increased linearly with a person's age until 20 years, after which it remained stable. The mean heart weight in CVD cases was 473 g in men and 379 g in women. The mean heart weight in non-CVD cases was 385 g in men and 320 g in women. Receiver operating characteristic curve analysis for CVD assessment revealed that the cutoff value of heart weight was 407 g (odds ratio of 4.2) in men and 327 g (2.6) in women, and that of heart weight/body height was 2.38 g/cm (4.0) in men and 2.15 g/cm (2.6) in women, respectively. Overall, heart weight was a more useful predictor of CVD in men than in women. In logistic regression analysis, the predictive power of heart weight for CVD was higher than that of body mass index in both sexes. CONCLUSION Thus, the criteria for hypertrophic heart weight are practical and useful for autopsy recordings, and it can be helpful for postmortem diagnosis of CVD. Our report is the first to reveal the cutoff value for hypertrophic heart weight in the Japanese population.
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Affiliation(s)
- Yu Kakimoto
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan; Tokyo Medical Examiner's Office, Tokyo, Japan.
| | | | - Motoki Osawa
- Department of Forensic Medicine, Tokai University School of Medicine, Kanagawa, Japan
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8
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Cheng TC, Philip JL, Tabima DM, Kumari S, Yakubov B, Frump AL, Hacker TA, Bellofiore A, Li R, Sun X, Goss KN, Lahm T, Chesler NC. Estrogen receptor-α prevents right ventricular diastolic dysfunction and fibrosis in female rats. Am J Physiol Heart Circ Physiol 2020; 319:H1459-H1473. [PMID: 33064565 PMCID: PMC7792707 DOI: 10.1152/ajpheart.00247.2020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 10/09/2020] [Accepted: 10/09/2020] [Indexed: 12/24/2022]
Abstract
Although women are more susceptible to pulmonary arterial hypertension (PAH) than men, their right ventricular (RV) function is better preserved. Estrogen receptor-α (ERα) has been identified as a likely mediator for estrogen protection in the RV. However, the role of ERα in preserving RV function and remodeling during pressure overload remains poorly understood. We hypothesized that loss of functional ERα removes female protection from adverse remodeling and is permissive for the development of a maladapted RV phenotype. Male and female rats with a loss-of-function mutation in ERα (ERαMut) and wild-type (WT) littermates underwent RV pressure overload by pulmonary artery banding (PAB). At 10 wk post-PAB, WT and ERαMut demonstrated RV hypertrophy. Analysis of RV pressure waveforms demonstrated RV-pulmonary vascular uncoupling and diastolic dysfunction in female, but not male, ERαMut PAB rats. Similarly, female, but not male, ERαMut exhibited increased RV fibrosis, comprised primarily of thick collagen fibers. There was an increased protein expression ratio of TIMP metallopeptidase inhibitor 1 (Timp1) to matrix metalloproteinase 9 (Mmp9) in female ERαMut compared with WT PAB rats, suggesting less collagen degradation. RNA-sequencing in female WT and ERαMut RV revealed kallikrein-related peptidase 10 (Klk10) and Jun Proto-Oncogene (Jun) as possible mediators of female RV protection during PAB. In summary, ERα in females is protective against RV-pulmonary vascular uncoupling, diastolic dysfunction, and fibrosis in response to pressure overload. ERα appears to be dispensable for RV adaptation in males. ERα may be a mediator of superior RV adaptation in female patients with PAH.NEW & NOTEWORTHY Using a novel loss-of-function mutation in estrogen receptor-α (ERα), we demonstrate that female, but not male, ERα mutant rats display right ventricular (RV)-vascular uncoupling, diastolic dysfunction, and fibrosis following pressure overload, indicating a sex-dependent role of ERα in protecting against adverse RV remodeling. TIMP metallopeptidase inhibitor 1 (Timp1), matrix metalloproteinase 9 (Mmp9), kallikrein-related peptidase 10 (Klk10), and Jun Proto-Oncogene (Jun) were identified as potential mediators in ERα-regulated pathways in RV pressure overload.
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MESH Headings
- Animals
- Disease Models, Animal
- Estrogen Receptor alpha/genetics
- Estrogen Receptor alpha/metabolism
- Female
- Fibrillar Collagens/metabolism
- Fibrosis
- Hypertrophy, Right Ventricular/metabolism
- Hypertrophy, Right Ventricular/pathology
- Hypertrophy, Right Ventricular/physiopathology
- Hypertrophy, Right Ventricular/prevention & control
- Kallikreins/genetics
- Kallikreins/metabolism
- Male
- Mitochondria, Heart/metabolism
- Mitochondria, Heart/pathology
- Mutation
- Myocardium/metabolism
- Myocardium/pathology
- Proto-Oncogene Proteins c-jun/genetics
- Proto-Oncogene Proteins c-jun/metabolism
- Rats, Mutant Strains
- Rats, Sprague-Dawley
- Sex Factors
- Signal Transduction
- Ventricular Dysfunction, Right/metabolism
- Ventricular Dysfunction, Right/pathology
- Ventricular Dysfunction, Right/physiopathology
- Ventricular Dysfunction, Right/prevention & control
- Ventricular Function, Right
- Ventricular Remodeling
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Affiliation(s)
- Tik-Chee Cheng
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Jennifer L Philip
- Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin
| | - Diana M Tabima
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
| | - Santosh Kumari
- Division of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin-Madison, Madison, Wisconsin
- Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Bakhtiyor Yakubov
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Andrea L Frump
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Timothy A Hacker
- Cardiovascular Research Center, University of Wisconsin-Madison, Madison, Wisconsin
| | - Alessandro Bellofiore
- Department of Biomedical, Chemical and Materials Engineering, San Jose State University, San Jose, California
| | - Rongbo Li
- Department of Pediatrics, University of California San Diego, La Jolla, California
| | - Xin Sun
- Department of Pediatrics, University of California San Diego, La Jolla, California
| | - Kara N Goss
- Division of Allergy, Pulmonary and Critical Care Medicine, University of Wisconsin-Madison, Madison, Wisconsin
- Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | - Tim Lahm
- Division of Pulmonary, Critical Care, Sleep and Occupational Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
- Department of Cellular and Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, Indiana
- Richard L. Roudebush Veterans Affairs Medical Center, Indianapolis, Indiana
| | - Naomi C Chesler
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin
- Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin
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9
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Ruppert M, Lakatos BK, Braun S, Tokodi M, Karime C, Oláh A, Sayour AA, Hizoh I, Barta BA, Merkely B, Kovács A, Radovits T. Longitudinal Strain Reflects Ventriculoarterial Coupling Rather Than Mere Contractility in Rat Models of Hemodynamic Overload–Induced Heart Failure. J Am Soc Echocardiogr 2020; 33:1264-1275.e4. [DOI: 10.1016/j.echo.2020.05.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 05/13/2020] [Accepted: 05/14/2020] [Indexed: 02/07/2023]
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10
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Wang HN, Li JL, Xu T, Yao HQ, Chen GH, Hu J. Effects of Sirt3‑autophagy and resveratrol activation on myocardial hypertrophy and energy metabolism. Mol Med Rep 2020; 22:1342-1350. [PMID: 32468001 PMCID: PMC7339626 DOI: 10.3892/mmr.2020.11195] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/10/2018] [Indexed: 02/05/2023] Open
Abstract
The aim of the present study was to examine the role of sirtuin 3 (Sirt3)‑autophagy in regulating myocardial energy metabolism and inhibiting myocardial hypertrophy in angiotensin (Ang) II‑induced myocardial cell hypertrophy. The primary cultured myocardial cells of neonatal Sprague Dawley rats were used to construct a myocardial hypertrophy model induced with Ang II. Following the activation of Sirt3 by resveratrol (Res), Sirt3 was silenced using small interfering (si)RNA‑Sirt3, and the morphology of the myocardial cells was observed under an optical microscope. Reverse transcription‑polymerase chain reaction was used to detect the mRNA expression of the following myocardial hypertrophy markers; atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), Sirt3, medium‑chain acyl‑CoA dehydrogenase (MCAD) and pyruvate kinase (PK). Western blot analysis was used to detect the protein expression of Sirt3, light chain 3 (LC3) and Beclin1. Ang II may inhibit the protein expression of Sirt3, LC3 and Beclin1. Res, an agonist of Sirt3, may promote the protein expression of Sirt3, LC3 and Beclin1. Res inhibited the mRNA expression of ANP and BNP, and reversed the Ang II‑induced myocardial cell hypertrophy. The addition of siRNA‑Sirt3 decreased the protein expression of Sirt3, LC3 and Beclin1, increased the mRNA expression of ANP and BNP, and weakened the inhibitory effect of Res on myocardial cell hypertrophy. Res promoted the mRNA expression of MCAD, inhibited the mRNA expression of PK, and reversed the influence of Ang II on myocardial energy metabolism. siRNA‑Sirt3 intervention significantly decreased the effect of Res in eliminating abnormal myocardial energy metabolism. In conclusion, Sirt3 may inhibit Ang II‑induced myocardial hypertrophy and reverse the Ang II‑caused abnormal myocardial energy metabolism through activation of autophagy.
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Affiliation(s)
- Hai-Ning Wang
- The First Affiliated Hospital of Shantou University Medical College Cardiac Care Unit, Shantou, Guangdong 515041, P.R. China
- Correspondence to: Dr Hai-Ning Wang, The First Affiliated Hospital of Shantou University Medical College Cardiac Care Unit, 57 Changping Road, Shantou, Guangdong 515041, P. R. China, E-mail:
| | - Ji-Lin Li
- The First Affiliated Hospital of Shantou University Medical College Cardiac Care Unit, Shantou, Guangdong 515041, P.R. China
| | - Tan Xu
- The First Affiliated Hospital of Shantou University Medical College Cardiac Care Unit, Shantou, Guangdong 515041, P.R. China
| | - Huai-Qi Yao
- The First Affiliated Hospital of Shantou University Medical College Cardiac Care Unit, Shantou, Guangdong 515041, P.R. China
| | - Gui-Hua Chen
- The First Affiliated Hospital of Shantou University Medical College Cardiac Care Unit, Shantou, Guangdong 515041, P.R. China
| | - Jing Hu
- The First Affiliated Hospital of Shantou University Medical College Cardiac Care Unit, Shantou, Guangdong 515041, P.R. China
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11
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Incomplete structural reverse remodeling from late-stage left ventricular hypertrophy impedes the recovery of diastolic but not systolic dysfunction in rats. J Hypertens 2020; 37:1200-1212. [PMID: 31026245 DOI: 10.1097/hjh.0000000000002042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Pressure overload-induced left ventricular myocardial hypertrophy (LVH) regresses after pressure unloading. However, distinct structural alterations become less reversible during the progression of LVH, which might influence the restoration of cardiac function. Here, we investigated how a reverse remodeling process from early versus late-stage LVH affects different aspects of left ventricular function. METHODS Pressure overload was induced in rats for 6, 12 and 18 weeks. Sham-operated animals were used as controls. Pressure unloading was evoked by removing the aortic constriction at week 6 (early-debanded) and week 12 (late-debanded). Echocardiography and histological analyses were carried out to detect structural alterations. Pressure-volume analysis was performed to assess left ventricular function. Molecular alterations were analyzed by quantitative real-time-PCR, and western blot. RESULTS Myocardial hypertrophy regressed to a similar degree in early and late-debanded groups. Accordingly, no differences were detected in the extent of regression regarding left ventricular mass, cardiomyocyte diameter, heart weight-to-tibial length ratio and beta-to-alpha myosin heavy chain expression. In contrast, resorption of interstitial and perivascular myocardial fibrosis was only detected in the early-debanded group, whereas it persisted in the late-debanded group. Removing the aortic constriction normalized ventriculo-arterial coupling and increased systolic performance in both debanded groups. However, the residual dysfunction in active relaxation and passive stiffness was more severe in the late-debanded compared to the early-debanded group. CONCLUSION Early debanding led to complete structural reverse remodeling (reduced hypertrophy and fibrosis) and full restoration of left ventricular function. In contrast, myocardial fibrosis persisted after late debanding, which impeded the normalization of diastolic but not systolic function.
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12
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Lakatos BK, Kovács A. Global Longitudinal Strain in Moderate Aortic Stenosis: A Chance to Synthesize It All? Circ Cardiovasc Imaging 2020; 13:e010711. [PMID: 32268806 DOI: 10.1161/circimaging.120.010711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Bálint K Lakatos
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Attila Kovács
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
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13
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Ogilvie LM, Edgett BA, Huber JS, Platt MJ, Eberl HJ, Lutchmedial S, Brunt KR, Simpson JA. Hemodynamic assessment of diastolic function for experimental models. Am J Physiol Heart Circ Physiol 2020; 318:H1139-H1158. [PMID: 32216614 DOI: 10.1152/ajpheart.00705.2019] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Traditionally, the evaluation of cardiac function has focused on systolic function; however, there is a growing appreciation for the contribution of diastolic function to overall cardiac health. Given the emerging interest in evaluating diastolic function in all models of heart failure, there is a need for sensitivity, accuracy, and precision in the hemodynamic assessment of diastolic function. Hemodynamics measure cardiac pressures in vivo, offering a direct assessment of diastolic function. In this review, we summarize the underlying principles of diastolic function, dividing diastole into two phases: 1) relaxation and 2) filling. We identify parameters used to comprehensively evaluate diastolic function by hemodynamics, clarify how each parameter is obtained, and consider the advantages and limitations associated with each measure. We provide a summary of the sensitivity of each diastolic parameter to loading conditions. Furthermore, we discuss differences that can occur in the accuracy of diastolic and systolic indices when generated by automated software compared with custom software analysis and the magnitude each parameter is influenced during inspiration with healthy breathing and a mild breathing load, commonly expected in heart failure. Finally, we identify key variables to control (e.g., body temperature, anesthetic, sampling rate) when collecting hemodynamic data. This review provides fundamental knowledge for users to succeed in troubleshooting and guidelines for evaluating diastolic function by hemodynamics in experimental models of heart failure.
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Affiliation(s)
- Leslie M Ogilvie
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
| | - Brittany A Edgett
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.,Department of Pharmacology, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
| | - Jason S Huber
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Mathew J Platt
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Hermann J Eberl
- Department of Mathematics and Statistics, University of Guelph, Guelph, Ontario, Canada
| | - Sohrab Lutchmedial
- Department of Pharmacology, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada.,Department of Cardiology, New Brunswick Heart Center, Saint John Regional Hospital, Horizon Health Network, Saint John, New Brunswick, Canada
| | - Keith R Brunt
- Department of Pharmacology, Dalhousie Medicine New Brunswick, Saint John, New Brunswick, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
| | - Jeremy A Simpson
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.,IMPART Investigator Team Canada, Saint John, New Brunswick, Canada
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14
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Ma JY, Shi XL, Liu L, Xu GL, Zhang JW. Evaluation of nine active components of Lu-Jiao Fang in normal and hypertrophic rat myocardia via LC-MS/MS. Biomed Chromatogr 2020; 34:e4814. [PMID: 32100317 DOI: 10.1002/bmc.4814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 01/09/2020] [Accepted: 02/23/2020] [Indexed: 12/26/2022]
Abstract
Lu-Jiao Fang (LJF), a traditional Chinese medicine prescription, can improve the cardiac function of chronic heart failure (CHF) patients; however, knowledge about the cardiac distribution of LJF, especially in CHF animal models, is rather limited. This work aimed to explore the cardiac distribution of LJF in pressure overload-induced CHF rats at the last gavage administration of LJF after 30 weeks of treatment. LC-MS/MS methods for analyzing nine active components (i.e. loganin, hesperidin, epimedin C, icariin, psoralen, isopsoralen, baohuoside I, morroniside and specnuezhenide) of LJF in cardiac tissue samples were established, and the components were then analyzed in left ventricular wall (LVW) and right ventricular wall (RVW) in parallel at same time point postdose for three dose groups. The results showed that most analytical component levels in LVW (hypertrophic myocardium) were only 39-74% of those in RVW (normal myocardium); however, psoralen and isopsoralen levels in LVW were equal to or even greater than the levels in RVW, suggesting that the hypertrophic myocardium tissue affinity of psoralen and isopsoralen might overcome the negative effect of decreased blood flow on distribution. This study indicated that the pathological state may influence drug distribution, and the efficacy of psoralen and isopsoralen for improving CHF deserves further investigation.
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Affiliation(s)
- Jing-Ya Ma
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, China
| | - Xiao-Li Shi
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, China
| | - Li Liu
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, China
| | - Guang-Lin Xu
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, China
| | - Jian-Wei Zhang
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, China
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15
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Wu J, Dai F, Li C, Zou Y. Gender Differences in Cardiac Hypertrophy. J Cardiovasc Transl Res 2019; 13:73-84. [PMID: 31418109 DOI: 10.1007/s12265-019-09907-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 08/06/2019] [Indexed: 12/17/2022]
Abstract
Cardiac hypertrophy is an adaptive response to abnormal physiological and pathological stimuli, which can be classified into concentric and eccentric hypertrophy, induced by pressure overload or volume overload, respectively. In both physiological and pathological scenarios, females generally show a more favorable form of hypertrophy compared with their male counterparts. However once established, cardiac hypertrophy is a stronger risk factor for heart failure in females. Pre-menopausal women are better protected against cardiac hypertrophy compared with men, but this protection is abolished following menopause and is partially restored after estrogen replacement therapy. Estrogen exerts its protection by counteracting pro-hypertrophy signaling pathways, whereas androgen mostly plays an opposite role in cardiac hypertrophy. We here summarize the progress in the understanding of sexual dimorphisms in cardiac hypertrophy and highlight recent breakthroughs in the regulatory role of sex hormones and their intricate molecular networks, in order to shed light on gender-oriented therapeutic efficacy for pathological hypertrophy.
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Affiliation(s)
- Jian Wu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Feng Lin Road, Shanghai, 200032, China.
| | - Fangjie Dai
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Feng Lin Road, Shanghai, 200032, China
| | - Chang Li
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Feng Lin Road, Shanghai, 200032, China
| | - Yunzeng Zou
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Feng Lin Road, Shanghai, 200032, China.
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16
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Oláh A, Mátyás C, Kellermayer D, Ruppert M, Barta BA, Sayour AA, Török M, Koncsos G, Giricz Z, Ferdinandy P, Merkely B, Radovits T. Sex Differences in Morphological and Functional Aspects of Exercise-Induced Cardiac Hypertrophy in a Rat Model. Front Physiol 2019; 10:889. [PMID: 31354526 PMCID: PMC6639783 DOI: 10.3389/fphys.2019.00889] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 06/26/2019] [Indexed: 01/20/2023] Open
Abstract
Background: Recent evidences suggest that sex hormones may be involved in the regulation of exercise-induced left ventricular (LV) hypertrophy. However, the sex-specific functional consequences of exercise-induced myocardial hypertrophy is still not investigated in detail. We aimed at understanding the sex-specific functional and morphological alterations in the LV and the underlying molecular changes in a rat model of athlete’s heart. Methods: We divided our young, adult male and female rats into control and exercised groups. Athlete’s heart was induced by a 12-week long swim training. Following the training period, we assessed LV hypertrophy with echocardiography, while pressure-volume analysis was performed to investigate in vivo LV function. After in vivo experiments, molecular biological studies and histological investigations were performed. Results: Echocardiography and post-mortem measured heart weight data indicated LV hypertrophy in both genders, nevertheless it was more pronounced in females. Despite the more significant relative hypertrophy in females, characteristic functional parameters did not show notable differences between the genders. LV pressure-volume analysis showed increased stroke volume, improved contractility and stroke work and unaltered LV stiffness in both male and female exercised rats, while active relaxation was ameliorated solely in male animals. The induction of Akt signaling was more significant in females compared to males. There was also a characteristic difference in the mitogen-activated protein kinase pathway as suppressed phosphorylation of p44/42 MAPK (Erk) and mTOR was observed in female exercised rats, but not in male ones. Myosin heavy chain α (MHC)/β-MHC ratio did not differ in males, but increased markedly in females. Conclusion: Our results confirm that there is a more pronounced exercise-induced LV hypertrophy in females as compared to the males, however, there are only minor differences regarding LV function. There are characteristic molecular differences between male and female animals, that can explain different degrees of LV hypertrophy.
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Affiliation(s)
- Attila Oláh
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Csaba Mátyás
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | | | - Mihály Ruppert
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | | | - Alex Ali Sayour
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Marianna Török
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Gábor Koncsos
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Zoltáng Giricz
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
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17
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Ruppert M, Bódi B, Korkmaz-Icöz S, Loganathan S, Jiang W, Lehmann L, Oláh A, Barta BA, Sayour AA, Merkely B, Karck M, Papp Z, Szabó G, Radovits T. Myofilament Ca 2+ sensitivity correlates with left ventricular contractility during the progression of pressure overload-induced left ventricular myocardial hypertrophy in rats. J Mol Cell Cardiol 2019; 129:208-218. [PMID: 30844361 DOI: 10.1016/j.yjmcc.2019.02.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/31/2019] [Accepted: 02/28/2019] [Indexed: 10/27/2022]
Abstract
AIM Here we aimed at investigating the relation between left ventricular (LV) contractility and myofilament function during the development and progression of pressure overload (PO)-induced LV myocardial hypertrophy (LVH). METHODS Abdominal aortic banding (AB) was performed to induce PO in rats for 6, 12 and 18 weeks. Sham operated animals served as controls. Structural and molecular alterations were investigated by serial echocardiography, histology, quantitative real-time PCR and western blot. LV function was assessed by pressure-volume analysis. Force measurement was carried out in permeabilized cardiomyocytes. RESULTS AB resulted in the development of pathological LVH as indicated by increased heart weight-to-tibial length ratio, LV mass index, cardiomyocyte diameter and fetal gene expression. These alterations were already present at early stage of LVH (AB-week6). Furthermore, at more advanced stages (AB-week12, AB-week18), myocardial fibrosis and chamber dilatation were also observed. From a hemodynamic point of view, the AB-wk6 group was associated with increased LV contractility, maintained ventriculo-arterial coupling (VAC) and preserved systolic function. In the same experimental group, increased myofilament Ca2+ sensitivity (pCa50) and hyperphosphorylation of cardiac troponin-I (cTnI) at Threonine-144 was detected. In contrast, in the AB-wk12 and AB-wk18 groups, the initial augmentation of LV contractility, as well as the increased myofilament Ca2+ sensitivity and cTnI (Threonine-144) hyperphosphorylation diminished, leading to impaired VAC and reduced systolic performance. Strong correlation was found between LV contractility parameters and myofilament Ca2+-sensitivity among the study groups. CONCLUSION Changes in myofilament Ca2+ sensitivity might underlie the alterations in LV contractility during the development and progression of PO-induced LVH.
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Affiliation(s)
- Mihály Ruppert
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary; Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany.
| | - Beáta Bódi
- Division of Clinical Physiology, Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Sevil Korkmaz-Icöz
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
| | | | - Weipeng Jiang
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
| | - Lorenz Lehmann
- Department of Cardiology, Angiology and Pulmonology, University Hospital Heidelberg, Heidelberg, Germany
| | - Attila Oláh
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | | | - Alex Ali Sayour
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary; Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
| | - Béla Merkely
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
| | - Matthias Karck
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
| | - Zoltán Papp
- Division of Clinical Physiology, Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary; HAS-UD Vascular Biology and Myocardial Pathophysiology Research Group, Hungarian Academy of Sciences, Debrecen, Hungary
| | - Gábor Szabó
- Department of Cardiac Surgery, University of Heidelberg, Heidelberg, Germany
| | - Tamás Radovits
- Heart and Vascular Center, Semmelweis University, Budapest, Hungary
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