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Chalise U, Hale TM. Fibroblasts under pressure: cardiac fibroblast responses to hypertension and antihypertensive therapies. Am J Physiol Heart Circ Physiol 2024; 326:H223-H237. [PMID: 37999643 PMCID: PMC11219059 DOI: 10.1152/ajpheart.00401.2023] [Citation(s) in RCA: 3] [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: 07/03/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
Approximately 50% of Americans have hypertension, which significantly increases the risk of heart failure. In response to increased peripheral resistance in hypertension, intensified mechanical stretch in the myocardium induces cardiomyocyte hypertrophy and fibroblast activation to withstand increased pressure overload. This changes the structure and function of the heart, leading to pathological cardiac remodeling and eventual progression to heart failure. In the presence of hypertensive stimuli, cardiac fibroblasts activate and differentiate to myofibroblast phenotype capable of enhanced extracellular matrix secretion in coordination with other cell types, mainly cardiomyocytes. Both systemic and local renin-angiotensin-aldosterone system activation lead to increased angiotensin II stimulation of fibroblasts. Angiotensin II directly activates fibrotic signaling such as transforming growth factor β/SMAD and mitogen-activated protein kinase (MAPK) signaling to produce extracellular matrix comprised of collagens and matricellular proteins. With the advent of single-cell RNA sequencing techniques, heterogeneity in fibroblast populations has been identified in the left ventricle in models of hypertension and pressure overload. The various clusters of fibroblasts reveal a range of phenotypes and activation states. Select antihypertensive therapies have been shown to be effective in limiting fibrosis, with some having direct actions on cardiac fibroblasts. The present review focuses on the fibroblast-specific changes that occur in response to hypertension and pressure overload, the knowledge gained from single-cell analyses, and the effect of antihypertensive therapies. Understanding the dynamics of hypertensive fibroblast populations and their similarities and differences by sex is crucial for the advent of new targets and personalized medicine.
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Affiliation(s)
- Upendra Chalise
- Department of Medicine, University of Minnesota-Twin Cities, Minneapolis, Minnesota, United States
| | - Taben M Hale
- Department of Basic Medical Sciences, University of Arizona, College of Medicine-Phoenix, Phoenix, Arizona, United States
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Yuan W, Fan H, Yang H, Tang L, Liu Z, Ouyang F, Luo W, Yan Y. Effect and mechanism of HMG-CoA reductase inhibitor on the improvement of elderly essential hypertension-induced vascular endothelial function impairment based on the JAK/STAT pathway. Diagn Pathol 2023; 18:108. [PMID: 37759223 PMCID: PMC10536732 DOI: 10.1186/s13000-023-01393-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023] Open
Abstract
OBJECTIVE Our research was designed to figure out the influence and mechanism of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor on the improvement of elderly essential hypertension-induced vascular endothelial function impairment based on the JAK/STAT pathway. METHODS Eighty-six elderly patients with essential hypertension were randomized into a control group (oral Amlodipine Besylate Tablets) and an observation group (oral Amlodipine Besylate Tablets + HMG-CoA reductase inhibitor atorvastatin calcium). Patients in both groups were treated with the drug for 12 weeks. Blood pressure, serum levels of inflammatory factors, and vascular endothelial function indicators, and levels of blood lipids were measured. The modeled rats were treated with atorvastatin calcium and a JAK/STAT pathway inhibitor (AG490), and the levels of cardiac function-related indices, left ventricular mass index, lipid levels, serum inflammatory factors and vascular endothelial function-related indices were detected in each group. RESULTS HMG-CoA reductase inhibitor improved blood pressure levels, lipid levels, serum inflammatory factor levels and cardiac function in elderly patients with essential hypertension. Both HMG-CoA reductase inhibitor and AG490 improved blood pressure levels, lipid levels, serum inflammatory factor levels and cardiac function in SHR rats. Both HMG-CoA reductase inhibitor and AG490 decreased p-JAK2/JAK2 and p-STAT3/STAT3 expression levels. CONCLUSION Our study demonstrates that HMG-CoA reductase inhibitor improves elderly essential hypertension-induced vascular endothelial function impairment by blocking the JAK/STAT pathway.
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Affiliation(s)
- Wen Yuan
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Hongjun Fan
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Haibing Yang
- Department of Cardiology, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Liang Tang
- Department of Cardiology, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Zhiming Liu
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China
| | - Fan Ouyang
- Department of Cardiology, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China.
| | - Wei Luo
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China.
| | - Yong Yan
- Department of Neurosurgery, Central Hospital of Zhuzhou, No. 116, Changjiang South Road, Tianyuan District, 412000, Zhuzhou, Hunan, China.
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The Effects of Renal Nerve Denervation on Blood Pressure and Target Organs in Different Hypertensive Rat Models. Int J Hypertens 2021; 2021:8615253. [PMID: 33884205 PMCID: PMC8041559 DOI: 10.1155/2021/8615253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 01/25/2021] [Accepted: 03/02/2021] [Indexed: 11/26/2022] Open
Abstract
Background Hypertension contributes to the progression of cardiac remodeling and renal damage. In turn, renal sympathetic hyperactivation showed elevated sympathetic nervous system activity and led to blood pressure increase in certain patients. The purpose of this study was to observe the effect of renal nerve denervation on blood pressure and target organ changes in two hypertensive rat models. Methods Hypertensive rats were randomly divided into a renal denervation (RDN) group and sham operation group. Wistar–Kyoto (WKY) rats of the same age were set as the baseline control group. In the secondary hypertension model, SD rats were randomly divided into five groups. Blood pressure and bodyweight were measured every week until they were euthanized. Results The two rat models underwent RDN at key timepoints. At these timepoints, the hearts and kidneys were collected for norepinephrine and angiotensin II measurements and histological analysis. Conclusion RDN performed before development of hypertension showed a significant antihypertensive effect on the secondary hypertension model.
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Physical Exercise Combined with Antihypertensive Drug Therapy on Left Ventricular Hypertrophy: Systematic Review and Meta-Analysis. High Blood Press Cardiovasc Prev 2020; 27:493-503. [PMID: 32776302 DOI: 10.1007/s40292-020-00403-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/28/2020] [Indexed: 10/23/2022] Open
Abstract
INTRODUCTION Physical exercise and antihypertensive drugs contribute to reduce or prevent hypertensive heart disease (HHD). The effect on blood pressure (BP) of both combined therapy is well documented, but not for the left ventricular (LV) function. AIM A systematic review and meta-analysis was conducted for LV biomarkers analysis regarding to HHD on subjects treated with antihypertensive drugs combined with physical exercise practice. METHODS The search was conducted on the Pubmed, Bireme, Lilacs, Central (Cochrane) and Science direct databases, comprising undetermined period of time, including randomized studies comparing trained and sedentary subjects, both treated with antihypertensive drugs. We analyzed the influence of combined therapy on echocardiogram parameters and BP. A significance level of 5% and 95% CI was considered for all outcomes. RESULTS Five studies (N = 1738) were included in meta-analysis. Combined therapy decreased significantly LV mass (CI - 21.63 to - 1.81, N = 783) and heart rate (HR; CI - 4.23 to - 1.59, N = 1738), compared to antihypertensive drugs alone. There was a trend to decrease LV mass index (LVMI; CI - 5.57 to 0.71, N = 1674), systolic BP (CI - 2.47 to 1.23, N = 1674) and diastolic BP (CI - 2.16 to 0.28, N = 1674), a trend to increase of ejection fraction (EF; 95% CI - 0.50 to 2.12, N = 783) and LV end-diastolic diameter (CI - 0.85 to 0.92, N = 847) was similar. CONCLUSION The antihypertensive therapy combined with physical exercise practice can reduce LV mass and HR. Therefore, combined therapy prescription should be considered for prevention and treatment of LV hypertrophy of hypertensive subjects.
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Xu X, Ruan L, Tian X, Pan F, Yang C, Liu G. Calcium inhibitor inhibits high glucose‑induced hypertrophy of H9C2 cells. Mol Med Rep 2020; 22:1783-1792. [PMID: 32705176 PMCID: PMC7411357 DOI: 10.3892/mmr.2020.11275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 05/21/2020] [Indexed: 02/07/2023] Open
Abstract
The aim of the present study was to explore whether the hypertrophy of H9C2 cardiomyocytes was induced by high glucose, to investigate whether the calcium channel inhibitor (Norvasc) could inhibit this process and to clarify the possible signaling pathways. The morphology of H9C2 cells was observed under an optical microscope, and the cell surface area was measured by Image Pro Plus 6.1 software. Furthermore, fluorescence spectrophotometry was used to detect intracellular calcium concentration ([Ca2+]i). ELISA was performed to detect calcineurin (CaN) activity; reverse transcription-quantitative PCR and western blotting were performed to detect the mRNA and protein expression levels of CaN Aβ subunit (CnAβ), nuclear factor of activated T cells 3 (NFAT3) and β type myosin heavy chain (β-MHC). Cell size was increased with the increase in glucose concentration of culture medium at 48 and 72 h, respectively, and decreased with the addition of Norvasc compared with those without Norvasc (P<0.05). There was no significant difference in cell size with the addition of Norvasc compared with cells cultured with 5 mM glucose (P>0.05). The average [Ca2+]i activity of single cells in the 48- and 72-h culture groups treated with 50 mM glucose was significantly higher than cells treated with 5 mM glucose (P<0.05); and the fluorescent value of average [Ca2+]i activity of single cells was lower, following the addition of Norvasc than that without Norvasc (P<0.05). CaN activity in the 48- and 72-h culture group treated with 50 mM glucose was markedly higher than that treated with 5 mM glucose, and the activity of CaN notably decreased with the addition of Norvasc compared with those without Norvasc. The mRNA and protein expression levels of CnAβ, NFAT3 and β-MHC in the 48- and 72-h culture groups treated with 50 mM glucose were all significantly higher than those treated with 5 mM glucose (P<0.05). The mRNA and protein expression of CnAβ, NFAT3 and β-MHC cultured with 50 mM glucose were significantly decreased following the addition of Norvasc (P<0.05). Thus, the calcium channel inhibitor Norvasc may inhibit high glucose-induced hypertrophy of H9C2 cardiomyocytes by inhibiting the Ca2+-CaN-NFAT3 signaling pathway.
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Affiliation(s)
- Xiaohong Xu
- Department of Pediatrics, Guangzhou Hospital of Integrated Traditional and West Medicine, Guangzhou, Guangdong 510800, P.R. China
| | - Luoyang Ruan
- Department of Anesthesiology, Guangzhou Hospital of Integrated Traditional and West Medicine, Guangzhou, Guangdong 510800, P.R. China
| | - Xiaohua Tian
- Department of Pediatrics, Central Hospital of Guangdong Nongken, Zhanjiang, Guangdong 524002, P.R. China
| | - Fengjuan Pan
- Department of Pediatrics, Central Hospital of Guangdong Nongken, Zhanjiang, Guangdong 524002, P.R. China
| | - Cailan Yang
- Department of Pediatrics, Central Hospital of Guangdong Nongken, Zhanjiang, Guangdong 524002, P.R. China
| | - Guosheng Liu
- Department of Pediatrics, The First Clinical Medical College of Jinan University, Guangzhou, Guangdong 510632, P.R. China
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Schlüter KD, Kutsche HS, Hirschhäuser C, Schreckenberg R, Schulz R. Review on Chamber-Specific Differences in Right and Left Heart Reactive Oxygen Species Handling. Front Physiol 2018; 9:1799. [PMID: 30618811 PMCID: PMC6304434 DOI: 10.3389/fphys.2018.01799] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/29/2018] [Indexed: 01/21/2023] Open
Abstract
Reactive oxygen species (ROS) exert signaling character (redox signaling), or damaging character (oxidative stress) on cardiac tissue depending on their concentration and/or reactivity. The steady state of ROS concentration is determined by the interplay between its production (mitochondrial, cytosolic, and sarcolemmal enzymes) and ROS defense enzymes (mitochondria, cytosol). Recent studies suggest that ROS regulation is different in the left and right ventricle of the heart, specifically by a different activity of superoxide dismutase (SOD). Mitochondrial ROS defense seems to be lower in right ventricular tissue compared to left ventricular tissue. In this review we summarize the current evidence for heart chamber specific differences in ROS regulation that may play a major role in an observed inability of the right ventricle to compensate for cardiac stress such as pulmonary hypertension. Based on the current knowledge regimes to increase ROS defense in right ventricular tissue should be in the focus for the development of future therapies concerning right heart failure.
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Affiliation(s)
| | - Hanna Sarah Kutsche
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| | | | - Rolf Schreckenberg
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
| | - Rainer Schulz
- Department of Physiology, Justus-Liebig-University Giessen, Giessen, Germany
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Eibel B, Kristochek M, Peres TR, Dias LD, Dartora DR, Casali KR, Kalil RAK, Lehnen AM, Irigoyen MC, Markoski MM. β-blockers interfere with cell homing receptors and regulatory proteins in a model of spontaneously hypertensive rats. Cardiovasc Ther 2018; 36:e12434. [PMID: 29752864 DOI: 10.1111/1755-5922.12434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/13/2018] [Accepted: 05/07/2018] [Indexed: 12/28/2022] Open
Abstract
AIM To examine the interference of β-blockers with the chemokine stromal cell-derived factor-1 (SDF-1) found in cell homing receptors, C-X-C chemokine receptor type 4 (CXCR-4) and CXCR-7, and regulatory proteins of homing pathways, we administered atenolol, carvedilol, metoprolol, and propranolol for 30 days using an orogastric tube to hypertensive rats. METHOD We collected blood samples before and after treatment and quantified the levels of SDF-1 with enzyme-linked immunosorbent assay (ELISA). On day 30 of treatment, the spontaneously hypertensive rats (SHR) were euthanized, and heart, liver, lung, and kidney tissues were biopsied. Proteins were isolated for determining the expression of CXCR-4, CXCR-7, GRK-2 (G protein-coupled receptors kinase 2), β-arrestins (β1-AR and β2-AR), and nuclear factor kappa B (NFκB). RESULTS We found that the study drugs modulated these proteins, and metoprolol and propranolol strongly affected the expression of β1-AR (P = .0102) and β2-AR (P = .0034). CONCLUSION β-blockers modulated tissue expression of the proteins and their interactions following 30 days of treatment. It evidences that this class of drugs can interfere with proteins of cell homing pathways.
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Affiliation(s)
- Bruna Eibel
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil
| | - Melissa Kristochek
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil
| | - Thiago R Peres
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil
| | - Lucinara D Dias
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil
| | - Daniela R Dartora
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil.,Sainte-Justine University Hospital Research Center, University of Montreal, Montreal, Canada
| | - Karina R Casali
- Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Renato A K Kalil
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil.,Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - Alexandre M Lehnen
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil.,Faculdade Sogipa de Educação Física (SOGIPA), Porto Alegre, Brazil
| | - Maria Claudia Irigoyen
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil.,Universidade de São Paulo (USP), Porto Alegre, Brazil
| | - Melissa M Markoski
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia (IC/FUC), Porto Alegre, Brazil.,Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
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Li Y, Jiang T, Fu X, Xu H, Ji J. Atorvastatin protects cardiomyocytes against OGD/R‑induced apoptosis by inhibiting miR‑199a‑5p. Mol Med Rep 2017; 16:3807-3816. [PMID: 28765953 PMCID: PMC5646958 DOI: 10.3892/mmr.2017.7084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 05/12/2017] [Indexed: 11/21/2022] Open
Abstract
The present study aimed to evaluate the protective effects of atorvastatin against myocardial ischemia/reperfusion (I/R) injury in cardiomyocytes and its underlying mechanisms. The direct cytotoxic effects of oxygen-glucose deprivation/reperfusion (OGD/R) on cardiomyocytes with and without atorvastatin pretreatment were evaluated. The effects of atorvastatin on the expression of glycogen synthase kinase-3β (GSK-3β) and microRNA (miR)-199a-5p were determined using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blot analyses. In addition, the expression levels of GSK-3β in cells with miR-199a-5p upregulation and downregulation were detected using RT-qPCR, western blot and immunohistochemical analyses. Pretreatment with atorvastatin significantly improved the recovery of cell viability from OGD/R (P<0.05). In addition, atorvastatin pretreatment significantly increased the expression of GSK-3β at the mRNA and protein levels, and the expression of miR-199a-5p at the mRNA level (all P<0.05). The upregulation and downregulation of miR-199a-5p respectively decreased and increased the expression of GSK-3β at the mRNA and protein levels. These results suggested that atorvastatin provided cardioprotective effects against I/R injury via increasing the expression of GSK-3β through the inhibition of miR-199a-5p.
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Affiliation(s)
- Yong Li
- Department of Cardiology, The Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu 213017, P.R. China
| | - Ting Jiang
- Department of Emergency, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Xingli Fu
- Health Science Center of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Hao Xu
- Department of Cardiology, The Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu 213017, P.R. China
| | - Jianguo Ji
- Department of Cardiology, The Affiliated Wujin Hospital of Jiangsu University, Changzhou, Jiangsu 213017, P.R. China
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Moris D, Spartalis M, Spartalis E, Karachaliou GS, Karaolanis GI, Tsourouflis G, Tsilimigras DI, Tzatzaki E, Theocharis S. The role of reactive oxygen species in the pathophysiology of cardiovascular diseases and the clinical significance of myocardial redox. ANNALS OF TRANSLATIONAL MEDICINE 2017; 5:326. [PMID: 28861423 DOI: 10.21037/atm.2017.06.27] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Acute and chronic excessive intracellular increase of reactive oxygen species (ROS) is involved in the development and progression of cardiovascular diseases. ROS are by-products of various oxidative physiological and biochemical processes. Sources of ROS are mitochondrial respiration, NADH/NADPH oxidase, xanthine oxidoreductase or the uncoupling of nitric oxide synthase (NOS) in vascular cells. ROS mediate various signaling pathways that underlie cardiovascular pathophysiology. The delicate equilibrium between free-radical generation and antioxidant defense is altered in favor of the former, thus leading to redox imbalance, oxidative stress, and increased cellular injury. An understanding of the pathophysiological mechanisms mediated by oxidative stress is crucial to the prevention and treatment of cardiovascular diseases.
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Affiliation(s)
- Demetrios Moris
- Department of Surgery, The Ohio State University Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Michael Spartalis
- Division of Cardiology, Onassis Cardiac Surgery Center, Athens, Greece
| | - Eleftherios Spartalis
- Laboratory of Experimental Surgery and Surgical Research, Medical School, University of Athens, Athens, Greece
| | - Georgia-Sofia Karachaliou
- Laboratory of Experimental Surgery and Surgical Research, Medical School, University of Athens, Athens, Greece
| | - Georgios I Karaolanis
- Department of Vascular Surgery, Medical School, University of Athens, Athens, Greece
| | - Gerasimos Tsourouflis
- Laboratory of Experimental Surgery and Surgical Research, Medical School, University of Athens, Athens, Greece
| | | | - Eleni Tzatzaki
- Division of Cardiology, Onassis Cardiac Surgery Center, Athens, Greece
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Li D, Paterson DJ. Cyclic nucleotide regulation of cardiac sympatho-vagal responsiveness. J Physiol 2016; 594:3993-4008. [PMID: 26915722 DOI: 10.1113/jp271827] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 02/17/2016] [Indexed: 12/22/2022] Open
Abstract
Cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) are now recognized as important intracellular signalling molecules that modulate cardiac sympatho-vagal balance in the progression of heart disease. Recent studies have identified that a significant component of autonomic dysfunction associated with several cardiovascular pathologies resides at the end organ, and is coupled to impairment of cyclic nucleotide targeted pathways linked to abnormal intracellular calcium handling and cardiac neurotransmission. Emerging evidence also suggests that cyclic nucleotide coupled phosphodiesterases (PDEs) play a key role limiting the hydrolysis of cAMP and cGMP in disease, and as a consequence this influences the action of the nucleotide on its downstream biological target. In this review, we illustrate the action of nitric oxide-CAPON signalling and brain natriuretic peptide on cGMP and cAMP regulation of cardiac sympatho-vagal transmission in hypertension and ischaemic heart disease. Moreover, we address how PDE2A is now emerging as a major target that affects the efficacy of soluble/particulate guanylate cyclase coupling to cGMP in cardiac dysautonomia.
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Affiliation(s)
- Dan Li
- Burdon Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics, Sherrington Building, University of Oxford, Parks Road, Oxford, OX1 3PT, UK
| | - David J Paterson
- Burdon Sanderson Cardiac Science Centre, Department of Physiology, Anatomy and Genetics, Sherrington Building, University of Oxford, Parks Road, Oxford, OX1 3PT, UK
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11
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Hu H, Liu B, Zuo Y, Liu D, Xie R, Cui W. dl -3- n -butylphthalide suppresses PDGF-BB-stimulated vascular smooth muscle cells proliferation via induction of autophagy. Life Sci 2016; 151:182-188. [DOI: 10.1016/j.lfs.2016.03.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 02/29/2016] [Accepted: 03/06/2016] [Indexed: 11/16/2022]
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12
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Zhang K, He X, Zhou Y, Gao L, Qi Z, Chen J, Gao X. Atorvastatin Ameliorates Radiation-Induced Cardiac Fibrosis in Rats. Radiat Res 2015; 184:611-20. [DOI: 10.1667/rr14075.1] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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13
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Atorvastatin improves cardiac function and remodeling in chronic non-ischemic heart failure: A clinical and pre-clinical study. Egypt Heart J 2015. [DOI: 10.1016/j.ehj.2014.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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14
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Hale TM. Persistent phenotypic shift in cardiac fibroblasts: impact of transient renin angiotensin system inhibition. J Mol Cell Cardiol 2015; 93:125-32. [PMID: 26631495 DOI: 10.1016/j.yjmcc.2015.11.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/24/2015] [Accepted: 11/25/2015] [Indexed: 12/13/2022]
Abstract
Fibrotic cardiac remodeling ultimately leads to heart failure - a debilitating and costly condition. Select antihypertensive agents have been effective in reducing or slowing the development of cardiac fibrosis. Moreover, some experimental studies have shown that the reduction in fibrosis induced by these agents persists long after stopping treatment. What has not been as well investigated is whether this transient treatment results in a protection against future fibrotic cardiac remodeling. In the present review, previously published studies are re-examined to assess whether the relative percent increase in collagen deposition over an off-treatment period is attenuated, relative to control, following transient antihypertensive treatment in young or adult rats. Present findings suggest that transient inhibition of the renin angiotensin system (RAS) not only produces a sustained reduction in cardiac fibrosis, but also results in a degree of protection against future collagen deposition. In addition, prior transient RAS inhibition appears to alter the cardiac fibroblast phenotype such that these cells show a muted response to myocardial injury - namely reduced proliferation, chemokine release, and collagen deposition. This review puts forth several potential mechanisms underlying this long-term cardiac protection that is afforded by transient RAS inhibition. Specifically, fibroblast phenotypic change, cardiac fibroblast apoptosis, sustained suppression of the RAS, persistent reduction in left ventricular hypertrophy, and persistent reduction in arterial pressure are each discussed. Identifying the mechanisms ultimately responsible for this change in cardiac fibroblast response to injury, hypertension, and aging may reveal novel targets for therapy.
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Affiliation(s)
- Taben M Hale
- Department of Basic Medical Sciences, University of Arizona, College of Medicine - Phoenix, 425 N 5th St, ABC1, Rm 327, USA.
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15
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Yu JG, Zhou RR, Cai GJ. From hypertension to stroke: mechanisms and potential prevention strategies. CNS Neurosci Ther 2012; 17:577-84. [PMID: 21951373 DOI: 10.1111/j.1755-5949.2011.00264.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Stroke is a major cause of disability and death worldwide. Prevention aimed at risk factors of stroke is the most effective strategy to curb the stroke pandemic. Hypertension is one of the most important risk factors for stroke. Despite the substantial evidence of the benefits of lowering blood pressure, conventional treatment does not normalize the burden of major cardiovascular events in patients with hypertension. Fully understanding the factors involved in the hypertension-induced stroke helps to develop new strategies for stroke prevention. Antihypertensive therapies selected should have positive blood pressure-independent effects on stroke risk. This review summarizes the factors involved in the hypertension-induced stroke, such as oxidative stress, inflammation, and arterial baroreflex dysfunction, and potential strategies for its prevention, therefore, provides clues for clinicians.
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Affiliation(s)
- Jian-Guang Yu
- Department of Pharmacology, Second Military Medical University, Shanghai, China
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Toma L, Stancu CS, Sanda GM, Sima AV. Anti-oxidant and anti-inflammatory mechanisms of amlodipine action to improve endothelial cell dysfunction induced by irreversibly glycated LDL. Biochem Biophys Res Commun 2011; 411:202-7. [DOI: 10.1016/j.bbrc.2011.06.137] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Accepted: 06/20/2011] [Indexed: 10/18/2022]
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Bayeva M, Ardehali H. Mitochondrial dysfunction and oxidative damage to sarcomeric proteins. Curr Hypertens Rep 2011; 12:426-32. [PMID: 20865351 DOI: 10.1007/s11906-010-0149-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Hypertension is an important risk factor for the development of heart failure. Increased production of reactive oxygen species (ROS) contributes to cardiac dysfunction by activating numerous pro-hypertrophic signaling cascades and damaging the mitochondria, thus setting off a vicious cycle of ROS generation. The way in which oxidative stress leads to exacerbation of systolic and diastolic dysfunction is still unclear, however. In skeletal muscle and ischemic myocardium, increased ROS production causes preferential oxidation of myofibrillar proteins and provides a mechanistic link between oxidative damage and impaired contractility through disruption of actin-myosin interactions, enzymatic functions, calcium sensitivity, and efficiency of cross-bridge cycling. In this review, we summarize recent findings in the fields of heart failure and sarcomere biology and speculate that oxidative damage to myofibrils may contribute to the development of heart failure.
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Affiliation(s)
- Marina Bayeva
- Feinberg Cardiovascular Research Institute, Northwestern University, Feinberg School of Medicine, 303 East Chicago Avenue, Tarry 14-733, Chicago, IL 60611, USA.
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Synergism of Telmisartan and Amlodipine on Blood Pressure Reduction and Cardiorenal Protection in Hypertensive Rats. J Cardiovasc Pharmacol 2011; 57:308-16. [DOI: 10.1097/fjc.0b013e3182073e41] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Current world literature. Curr Opin Allergy Clin Immunol 2010; 10:603-7. [PMID: 21030837 DOI: 10.1097/aci.0b013e3283413126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Cisternas JR, Valenti VE, Alves TB, Ferreira C, Petenusso M, Breda JR, Pires AC, Tassi N, de Abreu LC. Cardiac baroreflex is already blunted in eight weeks old spontaneously hypertensive rats. Int Arch Med 2010; 3:2. [PMID: 20181028 PMCID: PMC2830929 DOI: 10.1186/1755-7682-3-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Accepted: 01/27/2010] [Indexed: 12/19/2022] Open
Abstract
Background The literature did not evidence yet with which age spontaneously hypertensive rats (SHR) start to present baroreflex reduction. We endeavored to evaluate the baroreflex function in eight-week-old SHR. Methods Male Wistar Kyoto (WKY) normotensive rats and SHR aged eight weeks were studied. Baroreflex was calculated as the variation of heart rate (HR) divided by the mean arterial pressure (MAP) variation (ΔHR/ΔMAP) tested with a depressor dose of sodium nitroprusside (SNP, 50 μg/kg) and with a pressor dose of phenylephrine (PHE, 8 μg/kg) in the right femoral venous approach through an inserted cannula in the animals. Significant differences for p < 0.05. Results Baseline MAP (p < 0.0001) and HR (p = 0.0028) was higher in SHR. Bradycardic peak was attenuated in SHR (p < 0.0001), baroreflex gain tested with PHE was also reduced in the SHR group (p = 0.0012). PHE-induced increase in MAP was increased in WKY compared to SHR (p = 0.039). Bradycardic reflex responses to intravenous PHE was decreased in SHR (p < 0.0001). Conclusion Eight weeks old SHR already presents impairment of the parasympathetic component of baroreflex.
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Affiliation(s)
- José R Cisternas
- Department of Morphology and Physiology, School of Medicine of ABC, Av, Príncipe de Gales, 821, Santo André 09060-650, Brazil
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