1
|
Pharmacological mechanisms of sodium-glucose co-transporter 2 inhibitors in heart failure with preserved ejection fraction. BMC Cardiovasc Disord 2022; 22:261. [PMID: 35689186 PMCID: PMC9188076 DOI: 10.1186/s12872-022-02693-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/25/2022] [Indexed: 02/06/2023] Open
Abstract
Background More and more evidence indicates sodium-glucose co-transporter 2 inhibitors (SGLT2is) may display clinical benefits for heart failure with preserved ejection fraction (HFpEF). However, the mechanisms of the action remain unclear. Methods A systematic pharmacology-based strategy was applied for predicting the potential molecular mechanisms of SGLT2is in HFpEF. The potential targets of SGLT2is and HFpEF were contained from diverse databases. After networks were constructed, Metascape was applied to functional enrichment. Moreover, the key findings were validated through molecular docking. Results We obtained 487 SGLT2is related targets and 1505 HFpEF related targets. The networks showed the complex relationship of HFpEF-target-HFpEF. The results of functional enrichment analysis suggested that several biological processes, including muscle system process, inflammatory response, vasculature development, heart development, regulation of MAPK cascade, positive regulation of ion transport, negative regulation of cell population proliferation, cellular response to nitrogen compound, apoptotic signaling pathway, multicellular organismal homeostasis, response to oxidative stress, regulation of cell adhesion, positive regulation of cell death, response to growth factor, and cellular response to lipid, and signaling pathways, such as cardiomyopathy, cAMP signaling pathway, cytokine-cytokine receptor interaction, apoptosis, MAPK signaling pathway, HIF-1 signaling pathway, calcium signaling pathway, and NF-kappa B signaling pathway. Finally, we validated the interactions and combinations of SGLT2is and core targets. Conclusion SGLT2is play the potential role of anti-HFpEF through the direct or indirect synergy of multiple targets and pathways. Our study promotes the explanation of the molecular mechanisms of SGLT2is in HFpEF. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-022-02693-8.
Collapse
|
2
|
Nasciutti PR, Moraes AT, Santos TK, Gonçalves Queiroz KK, Costa APA, Amaral AR, Fernando Gomes Olivindo R, Pontieri CFF, Jeremias JT, Vendramini THA, Brunetto MA, Carvalho RDOA. Protective effects of omega-3 fatty acids in dogs with myxomatous mitral valve disease stages B2 and C. PLoS One 2021; 16:e0254887. [PMID: 34265016 PMCID: PMC8282066 DOI: 10.1371/journal.pone.0254887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 07/07/2021] [Indexed: 12/02/2022] Open
Abstract
Myxomatous mitral valve disease (MMVD) is characterized by thickening of the valve leaflets and omega-3 (ω-3) supplementation has been associated with modulation of blood pressure (BP) and heart rate, improvement of doppler echocardiographic indices, antiarrhythmic, anti-inflammatory and anti-dislipidemic effects in dogs and humans, although prospective studies of it single use are still absent in the veterinary literature. The objective of this study was to evaluate the influence of ω-3 supplementation in dogs with MMVD. Twenty-nine dogs were followed quarterly for 12 months by clinical evaluation, arterial blood pressure, electrocardiography, doppler echocardiography, thoracic radiography and laboratory tests including inflammatory mediators and cardiac biomarker blood concentrations. The dogs were classified in stages B2 and C, according to the classification proposed by ACVIM 2019. They were randomly assigned to either ω-3 group (ω-3G) or control group (CG). The ingestion of ω-3 reduced the chance of developing arrhythmias by 2.96 times (p = 0.003). The vertebral heart size (VHS) measurements were higher in the control group (p = 0.033). In conclusion, at the dosages used in this study, ω-3 dietary supplementation reduces the volumetric overload, has antiarrhythmic effect and keeps dogs with B2 and C stages of MMVD in milder stages of the disease.
Collapse
Affiliation(s)
- Priscilla Regina Nasciutti
- Veterinary Cardiology Service of the Veterinary Hospital of the School of Veterinary Medicine and Animal Science, Federal University of Goias, Goiania, Brazil
| | - Aline Tavares Moraes
- Veterinary Cardiology Service of the Veterinary Hospital of the School of Veterinary Medicine and Animal Science, Federal University of Goias, Goiania, Brazil
| | - Thaiz Krawczyk Santos
- Veterinary Cardiology Service of the Veterinary Hospital of the School of Veterinary Medicine and Animal Science, Federal University of Goias, Goiania, Brazil
| | - Karine Kelly Gonçalves Queiroz
- Veterinary Cardiology Service of the Veterinary Hospital of the School of Veterinary Medicine and Animal Science, Federal University of Goias, Goiania, Brazil
| | - Ana Paula Araújo Costa
- Veterinary Cardiology Service of the Veterinary Hospital of the School of Veterinary Medicine and Animal Science, Federal University of Goias, Goiania, Brazil
| | - Andressa Rodrigues Amaral
- Nutrition and Production Department, Pet Nutrology Research Center, School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Rodrigo Fernando Gomes Olivindo
- Nutrition and Production Department, Pet Nutrology Research Center, School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | | | - Juliana Toloi Jeremias
- Nutritional Development Center, Grandfood Indústria e Comércio Ltda (Premier Pet), Dourado, Brazil
| | - Thiago Henrique Annibale Vendramini
- Nutrition and Production Department, Pet Nutrology Research Center, School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Marcio Antonio Brunetto
- Nutrition and Production Department, Pet Nutrology Research Center, School of Veterinary Medicine and Animal Science, University of Sao Paulo (USP), Pirassununga, Brazil
| | - Rosângela de Oliveira Alves Carvalho
- Veterinary Cardiology Service of the Veterinary Hospital of the School of Veterinary Medicine and Animal Science, Federal University of Goias, Goiania, Brazil
| |
Collapse
|
3
|
Nemec Svete A, Verk B, Čebulj-Kadunc N, Salobir J, Rezar V, Domanjko Petrič A. Inflammation and its association with oxidative stress in dogs with heart failure. BMC Vet Res 2021; 17:176. [PMID: 33902566 PMCID: PMC8077822 DOI: 10.1186/s12917-021-02878-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 04/13/2021] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Inflammation and oxidative stress can contribute to the development and progression of heart failure. This study aimed to investigate the association between inflammatory and oxidative stress markers in dogs with congestive heart failure (CHF). Associations between the disease severity marker N-terminal pro-B-type natriuretic peptide (NT-proBNP) and markers of inflammation and oxidative stress were also determined. RESULTS Thirty-seven dogs with cardiovascular diseases (dilated cardiomyopathy, DCM (16 dogs), myxomatous mitral valve disease, MMVD (21 dogs)) and ten healthy dogs were included in this prospective study. The patients were further divided into groups with (26) and without CHF (11). We found a significantly higher serum concentration of C-reactive protein (P = 0.012), white blood cell (P = 0.001), neutrophil (P = 0.001) and monocyte counts (P = 0.001) in patients with CHF compared to control dogs. The concentration of tumor necrosis factor-alpha (TNF-α) was significantly higher in patients with CHF compared to patients without CHF (P = 0.030). No significant difference was found in most of the measured parameters between MMVD and DCM patients, except for glutathione peroxidase (GPX) and NT-proBNP. In patients with CHF, TNF-α correlated positively with malondialdehyde (P = 0.014, r = 0.474) and negatively with GPX (P = 0.026, r = - 0.453), and interleukin-6 correlated negatively with GPX (P = 0.046, r = - 0.412). NT-proBNP correlated positively with malondialdehyde (P = 0.011, r = 0.493). In patients without CHF none of the inflammatory and oxidative stress markers correlated significantly. Furthermore, in the group of all cardiac patients, GPX activity significantly negatively correlated with NT-proBNP (P = 0.050, r = - 0.339) and several markers of inflammation, including TNF-α (P = 0.010, r = - 0.436), interleukin-6 (P = 0.026, r = - 0.382), white blood cell (P = 0.032, r = - 0.369), neutrophil (P = 0.027, r = - 0.379) and monocyte counts (P = 0.024, r = - 0.386). CONCLUSION Inflammatory and oxidative stress markers are linked in canine CHF patients, but not in patients without CHF. These results suggest complex cross communication between the two biological pathways in advanced stages of CHF.
Collapse
Affiliation(s)
- Alenka Nemec Svete
- Small Animal Clinic, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Barbara Verk
- Small Animal Clinic, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Nina Čebulj-Kadunc
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia
| | - Janez Salobir
- Institute of Nutrition, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1230, Domžale, Slovenia
| | - Vida Rezar
- Institute of Nutrition, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1230, Domžale, Slovenia
| | - Aleksandra Domanjko Petrič
- Small Animal Clinic, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000, Ljubljana, Slovenia.
| |
Collapse
|
4
|
Gasparini S, Fonfara S, Kitz S, Hetzel U, Kipar A. Canine Dilated Cardiomyopathy: Diffuse Remodeling, Focal Lesions, and the Involvement of Macrophages and New Vessel Formation. Vet Pathol 2020; 57:397-408. [PMID: 32125251 DOI: 10.1177/0300985820906895] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Dilated cardiomyopathy (DCM) is among the most common cardiac diseases in dogs. Its pathogenesis is not fully understood, but myocardial remodeling and inflammation are suspected to be involved. The present study aimed to characterize the pathological processes in canine DCM, investigating morphological changes in association with the expression of relevant cytokines and remodeling markers. The myocardium of 17 dogs with DCM and 6 dogs without cardiac diseases was histologically evaluated, and selected cases were further examined by immunohistochemistry, morphometry, and reverse transcription quantitative PCR. In DCM, the myocardium exhibited subtle but statistically significant diffuse quantitative changes. These comprised increased interstitial collagen deposition and macrophage numbers, as well as an overall reduced proportion of contractile tissue. This was accompanied by a significant increase in myocardial transcription of intracellular adhesion molecule (ICAM) 1, inflammatory cytokines, and remodeling enzymes. Laser microdissection showed that cardiomyocytes transcribed most relevant markers including ICAM-1, tumor necrosis factor α, transforming growth factor β (TGF-β), matrix metalloproteinase 2 (MMP-2), tissue inhibitor of MMP (TIMP) 1 and TIMP-2. In addition, there were multifocal cell-rich lesions characterized by fibrosis, neovascularization, macrophage infiltration, and cardiomyocyte degeneration. In these, macrophages were often found to express ICAM-1, TGF-β, and vascular endothelial growth factor; the former two were also expressed by cardiomyocytes. These results characterize the diffuse myocardial remodeling processes that occur in DCM. The observed multifocal cell-rich lesions might result from reduced tissue perfusion. Macrophages and cardiomyocytes seem to actively contribute to the remodeling processes, which ultimately lead to cardiac dilation and dysfunction. The precise role of the involved cells and the factors initiating the remodeling process still needs to be identified.
Collapse
Affiliation(s)
- Stefania Gasparini
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Sonja Fonfara
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Canada
| | - Sarah Kitz
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Udo Hetzel
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Anja Kipar
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| |
Collapse
|
5
|
Tan K, Markby G, Muirhead R, Blake R, Bergeron L, Fici G, Summers K, Macrae V, Corcoran B. Evaluation of canine 2D cell cultures as models of myxomatous mitral valve degeneration. PLoS One 2019; 14:e0221126. [PMID: 31415646 PMCID: PMC6695117 DOI: 10.1371/journal.pone.0221126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/30/2019] [Indexed: 12/02/2022] Open
Abstract
The utility of cells cultured from the mitral valve as models of myxomatous diseases needs to be properly validated. In this study valve interstitial cells (VICs) and valve endothelial cells (VECs) were cultured from normal and diseased canine mitral valves in 2% (v/v) or 10% FBS media, in the presence of TGFβ1, 2 and 3, the TGFβ RI kinase inhibitor SB431542 and TGFβ neutralising antibodies, 5HT and the 5HT2RB antagonist LY272015. Cultures were examined by morphology, transcriptomic profiling, protein expression of the cell specific markers αSMA and SM22α (VICs), and CD31 (VECs), deposition of proteoglycans (PG), the PG versican, and the TGFβs themselves. VECs derived from normal valves were CD31+/αSMA-, but those from diseased valves were αSMA+, indicating endothelial-to-mesenchymal (EndoMT) transition had occurred. The TGFβs induced EndoMT in normal VECs, and this was abolished by SB431542, with significant changes in αSMA, CD31 and HAS2 expression (P<0.05). Normal VICs cultured in 10% FBS media were αSMA+ (activated myofibroblast (disease) phenotype), but were αSMA- when grown in 2% FBS. VICs from diseased dogs were αSMA+ in 2% FBS (retention of the activated myofibroblast disease phenotype), with significantly increased TGFβ1 expression (P<0.05) compared to normal cells. Treatment of normal and diseased VICs with the TGFβs significantly increased expression of αSMA, SM22α, versican, the TGFβs themselves, and deposition of PGs (P<0.05), with TGFβ1 being the most potent activator. These effects were either abolished or markedly reduced by SB431542 and a pan-TGFβ neutralizing antibody (P<0.05). SB431542 also markedly reduced αSMA expression in VICs from diseased valves, but 5HT and LY272015 had no effect on VIC phenotype. Transcriptomic profiling identified clear differences in gene expression for the different conditions and treatments that partially matched that seen in native diseased valve tissue, including changes in expression of ACTA2 (αSMA), 5HTR2B, TAGLN (SM22α) and MYH10 (SMemb), gene ontology terms and canonical signalling pathways. Normal and diseased VICs and normal VECs from canine mitral valves can be successfully grown in culture with retention of phenotype, which can be manipulated using TGFβ1 and the TGFβ RI kinase inhibitor SB431542. This optimized cell system can now be used to model MMVD to elucidate disease mechanisms and identify key regulators of disease progression.
Collapse
Affiliation(s)
- Karen Tan
- Roslin Institute, University of Edinburgh, Roslin, United Kingdom
| | - Greg Markby
- Roslin Institute, University of Edinburgh, Roslin, United Kingdom
| | - Rhona Muirhead
- Roslin Institute, University of Edinburgh, Roslin, United Kingdom
| | - Rachel Blake
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin, United Kingdom
| | - Lisa Bergeron
- Zoetis Animal Health, Kalamazoo, Michigan, United States of America
| | - Greg Fici
- Zoetis Animal Health, Kalamazoo, Michigan, United States of America
| | - Kim Summers
- Roslin Institute, University of Edinburgh, Roslin, United Kingdom
| | - Vicky Macrae
- Roslin Institute, University of Edinburgh, Roslin, United Kingdom
| | - Brendan Corcoran
- Roslin Institute, University of Edinburgh, Roslin, United Kingdom
- Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin, United Kingdom
- * E-mail:
| |
Collapse
|
6
|
Hamilton-Elliott J, Ambrose E, Christley R, Dukes-McEwan J. White blood cell differentials in dogs with congestive heart failure (CHF) in comparison to those in dogs without cardiac disease. J Small Anim Pract 2018; 59:364-372. [PMID: 29314019 DOI: 10.1111/jsap.12809] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/14/2017] [Accepted: 11/15/2017] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To determine if dogs with congestive heart failure have different white blood cell differential cell counts than dogs without cardiac disease. MATERIALS AND METHODS In total, 72 dogs with congestive heart failure and 143 controls were included in this retrospective study. Signalment, white blood cell differential counts and echocardiography data were retrieved. Basic statistical analysis was performed on white blood cell differential counts, and principal component analysis was used to compare these counts between cases and controls, with age, gender and case/control status as supplementary variables. Cases and controls were compared with binary logistic regression for the principal components identified and individual white blood cell differential counts. Principal component analysis of cases alone was conducted with age, gender, weight and mitral E wave:isovolumic relaxation time as supplementary variables. Linear regression analysis was used to explore the association between mitral E wave:isovolumic relaxation time and the principal components, weight, gender, age and diagnosis (mitral valve disease or dilated cardiomyopathy). RESULTS Among cases and controls, the largest variance in data (component 1) was associated with neutrophils, band neutrophils, monocytes and case status (P<0·01). The odds of an individual being a case increased 2·5-fold (95% confidence interval: 1·4 to 4·4) for each unit increase in component 1. Among the cases, mitral E wave:isovolumic relaxation time was associated with neutrophil count and case/control category. CLINICAL SIGNIFICANCE Dogs with congestive heart failure had a statistically significant increase in neutrophils, band neutrophils and monocytes in comparison with those without cardiac disease but the cell counts remained within normal reference intervals.
Collapse
Affiliation(s)
- J Hamilton-Elliott
- Cardiology Service, Small Animal Teaching Hospital, Institute of Veterinary Science, University of Liverpool, Neston, Chester, CH64 7TE, UK
| | - E Ambrose
- Cardiology Service, Small Animal Teaching Hospital, Institute of Veterinary Science, University of Liverpool, Neston, Chester, CH64 7TE, UK
| | - R Christley
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, University of Liverpool, Neston, Chester, CH64 7TE, UK
| | - J Dukes-McEwan
- Cardiology Service, Small Animal Teaching Hospital, Institute of Veterinary Science, University of Liverpool, Neston, Chester, CH64 7TE, UK
| |
Collapse
|
7
|
Cytokine expression in peripheral blood mononuclear cells of dogs with mitral valve disease. Vet J 2016; 211:45-51. [PMID: 27033593 DOI: 10.1016/j.tvjl.2016.03.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 02/12/2016] [Accepted: 03/03/2016] [Indexed: 11/22/2022]
Abstract
Inflammation plays an important role in the pathogenesis of congestive heart failure (CHF). In humans with CHF, increased production and high plasma concentrations of tumour necrosis factor-α (TNF-α), interleukin (IL)-6, IL-1, IL-8 and transforming growth factor-β (TGF-β) have been associated with disease progression and a negative prognosis. The aim of this study was to investigate whether differences in cytokine blood mRNA expression exist between clinically healthy dogs and dogs with myxomatous mitral valve disease (MMVD); to determine if the expression was related to the severity of MMVD, and to detect any correlations with echocardiographic parameters of cardiac remodelling. Twenty-three dogs with MMVD of varying severity and six clinically healthy dogs were included in the study. Whole blood samples were obtained for measurement of mRNA expression of IL-1α, IL-1β, IL-6, IL-8, TGF-β1, TNF-α by reverse transcriptase-PCR (RT-PCR). There were statistically significant differences between clinically healthy dogs and dogs with MMVD for IL-8 and TGF-β1 gene expression. IL-8 expression increased with increasing MMVD severity and TGF-β1 expression was higher in asymptomatic dogs with echocardiographic signs of cardiac remodelling (American College Veterinary Internal Medicine class B2) than in all other groups. These results could suggest the involvement of these cytokines at different stages of the disease.
Collapse
|
8
|
Fonfara S, Hetzel U, Hahn S, Kipar A. Age- and gender-dependent myocardial transcription patterns of cytokines and extracellular matrix remodelling enzymes in cats with non-cardiac diseases. Exp Gerontol 2015; 72:117-23. [DOI: 10.1016/j.exger.2015.09.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 09/01/2015] [Accepted: 09/25/2015] [Indexed: 11/29/2022]
|
9
|
Fonfara S, Hetzel U, Oyama MA, Kipar A. The potential role of myocardial serotonin receptor 2B expression in canine dilated cardiomyopathy. Vet J 2013; 199:406-12. [PMID: 24440442 DOI: 10.1016/j.tvjl.2013.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 11/22/2013] [Accepted: 12/04/2013] [Indexed: 01/14/2023]
Abstract
Serotonin signalling in the heart is mediated by receptor subtype 2B (5-HTR2B). A contribution of serotonin to valvular disease has been reported, but myocardial expression of 5-HTR2B and its role in canine dilated cardiomyopathy (DCM) is not known. The aim of the present study was to investigate myocardial 5-HTR2B mRNA expression in dogs with DCM and to correlate results with expression of markers for inflammation and remodelling. Myocardial samples from eight healthy dogs, four dogs with DCM, five with cardiac diseases other than DCM and six with systemic non-cardiac diseases were investigated for 5-HTR2B mRNA expression using quantitative PCR (qPCR). The results were compared to mRNA expression of selected cytokines, matrix metalloproteinases (MMP) and tissue inhibitors of matrix metalloproteinase (TIMP). Laser microdissection with subsequent qPCR and immunohistochemistry were employed to identify the cells expressing 5-HTR2B. The myocardium of control dogs showed constitutive 5-HTR2B mRNA expression. In dogs with DCM, 5-HTR2B mRNA values were significantly greater than in all other groups, with highest levels of expression in the left ventricle and right atrium. Myocytes were identified as the source of 5-HTR2B mRNA and protein. A significant positive correlation of 5-HTR2B mRNA with expression of several cytokines, MMPs and TIMPs was observed. The findings suggest that serotonin might play a role in normal cardiac structure and function and could contribute to myocardial remodelling and functional impairment in dogs with DCM.
Collapse
Affiliation(s)
- Sonja Fonfara
- Veterinary Pathology, Faculty of Veterinary Medicine, P.O. Box 66, 00014 University of Helsinki, Finland.
| | - Udo Hetzel
- Veterinary Pathology, Faculty of Veterinary Medicine, P.O. Box 66, 00014 University of Helsinki, Finland
| | - Mark A Oyama
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, 3900 Delancy St, Philadelphia, PA 19104, USA
| | - Anja Kipar
- Veterinary Pathology, Faculty of Veterinary Medicine, P.O. Box 66, 00014 University of Helsinki, Finland; Veterinary Pathology, School of Veterinary Science and Department of Infection Biology, Institute of Global Health, University of Liverpool, Leahurst Campus, Neston CH64 7TE, UK
| |
Collapse
|
10
|
Fonfara S, Hetzel U, Tew SR, Cripps P, Dukes-McEwan J, Clegg PD. Expression of matrix metalloproteinases, their inhibitors, and lysyl oxidase in myocardial samples from dogs with end-stage systemic and cardiac diseases. Am J Vet Res 2013; 74:216-23. [PMID: 23363345 DOI: 10.2460/ajvr.74.2.216] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To compare the degree of mRNA expression for matrix metalloproteinases (MMPs), tissue inhibitors (TIMPs), and lysyl oxidase in myocardial samples from dogs with cardiac and systemic diseases and from healthy control dogs. SAMPLE Myocardial samples from the atria, ventricles, and septum of 8 control dogs, 6 dogs with systemic diseases, 4 dogs with dilated cardiomyopathy (DCM), and 5 dogs with other cardiac diseases. PROCEDURES Degrees of mRNA expression for MMP-1, -2, -3, -9, and -13; TIMP-1, -2, -3, and -4; and lysyl oxidase were measured via quantitative real-time PCR assay. Histologic examination of the hearts was performed to identify pathological changes. RESULTS In myocardial samples from control dogs, only TIMP-3 and TIMP-4 mRNA expression was detected, with a significantly higher degree in male versus female dogs. In dogs with systemic and cardiac diseases, all investigated markers were expressed, with a significantly higher degree of mRNA expression than in control dogs. Furthermore, the degree of expression for MMP-2, TIMP-1, and TIMP-2 was significantly higher in dogs with DCM than in dogs with systemic diseases and cardiac diseases other than DCM. Expression was generally greater in atrial than in ventricular tissue for MMP-2, MMP-13, and lysyl oxidase in samples from dogs with atrial fibrillation. CONCLUSIONS AND CLINICAL RELEVANCE Degrees of myocardial MMP, TIMP, and lysyl oxidase mRNA expression were higher in dogs with cardiac and systemic diseases than in healthy dogs, suggesting that expression of these markers is a nonspecific consequence of end-stage diseases. Selective differences in the expression of some markers may reflect specific pathogenic mechanisms and may play a role in disease progression, morbidity and mortality rates, and treatment response.
Collapse
Affiliation(s)
- Sonja Fonfara
- Small Animal Teaching Hospital, School of Veterinary Science, University of Liverpool, Leahurst Campus, Neston, Cheshire, CH64 7TE, England.
| | | | | | | | | | | |
Collapse
|