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Carraro CC, Turck P, Bahr A, Donatti L, Corssac G, Lacerda D, da Rosa Araujo AS, de Castro AL, Koester L, Belló-Klein A. Effect of free and nanoemulsified β-caryophyllene on monocrotaline-induced pulmonary arterial hypertension. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119704. [PMID: 38462075 DOI: 10.1016/j.bbamcr.2024.119704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 02/06/2024] [Accepted: 02/29/2024] [Indexed: 03/12/2024]
Abstract
Pulmonary arterial hypertension (PAH) is characterized by increased pulmonary vascular resistance (PVR), right ventricular (RV) failure and premature death. Compounds with vasodilatory characteristics, such as β-caryophyllene, could be promising therapeutics for PAH. This study aimed to determine the effects of free and nanoemulsified β-caryophyllene in lung oxidative stress and heart function in PAH rats. Male Wistar rats (170 g, n = 6/group) were divided into four groups: control (CO), monocrotaline (MCT), monocrotaline + β-caryophyllene (MCT-Bcar) and monocrotaline + nanoemulsion with β-caryophyllene (MCT-Nano). PAH was induced by MCT (60 mg/kg i.p.), and 7 days later, treatment with β-caryophyllene, either free or in a nanoemulsion (by gavage, 176 mg/kg/day) or vehicle was given for 14 days. Echocardiographic and hemodynamic measurements were performed, and after, the RV was collected for morphometry and the lungs for evaluation of oxidative stress, antioxidant enzymes, total sulfhydryl compounds, nitric oxide synthase (NOS) activity and endothelin-1 receptor expression. RV hypertrophy, increased PVR and RV systolic and diastolic pressures (RVSP and RVEDP, respectively) and increased mean pulmonary arterial pressure (mPAP) were observed in the MCT group. Treatment with both free and nanoemulsified β-caryophyllene reduced RV hypertrophy, mPAP, RVSP and lipid peroxidation. The reduction in RVSP was more pronounced in the MCT-Nano group. Moreover, RVEDP decreased only in the MCT-Nano group. These treatments also increased superoxide dismutase, catalase and NOS activities and decreased endothelin-1 receptors expression. Both β-caryophyllene formulations improved mPAP, PVR and oxidative stress parameters. However, β-caryophyllene in a nanoemulsion was more effective in attenuating the effects of PAH.
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Affiliation(s)
| | - Patrick Turck
- Laboratório de Fisiologia Cardiovascular, UFRGS, Brazil
| | - Alan Bahr
- Laboratório de Fisiologia Cardiovascular, UFRGS, Brazil
| | - Luiza Donatti
- Laboratório de Fisiologia Cardiovascular, UFRGS, Brazil
| | - Giana Corssac
- Laboratório de Fisiologia Cardiovascular, UFRGS, Brazil
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Campos-Carraro C, Turck P, de Lima-Seolin BG, Teixeira RB, Zimmer A, Araujo ASDR, Belló-Klein A. Copaiba oil improves pulmonary nitric oxide bioavailability in monocrotaline-treated rats. Can J Physiol Pharmacol 2023; 101:447-454. [PMID: 37581356 DOI: 10.1139/cjpp-2023-0028] [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] [Indexed: 08/16/2023]
Abstract
Oxidative stress is involved in increased pulmonary vascular resistance (PVR) and right ventricular (RV) hypertrophy, characteristics of pulmonary arterial hypertension (PAH). Copaiba oil, an antioxidant compound, could attenuate PAH damage. This study's aim was to determine the effects of copaiba oil on lung oxidative stress, PVR, and mean pulmonary arterial pressure (mPAP) in the monocrotaline (MCT) model of PAH. Male Wistar rats (170 g, n = 7/group) were divided into four groups: control, MCT, copaiba oil, and MCT + copaiba oil (MCT-O). PAH was induced by MCT (60 mg/kg i.p.) and, after 1 week, the treatment with copaiba oil (400 mg/kg/day gavage) was started for 14 days. Echocardiographic and hemodynamic measurements were performed. RV was collected for morphometric evaluations and lungs and the pulmonary artery were used for biochemical analysis. Copaiba oil significantly reduced RV hypertrophy, PVR, mPAP, and antioxidant enzyme activities in the MCT-O group. Moreover, increased nitric oxide synthase and decreased NADPH oxidase activities were observed in the MCT-O group. In conclusion, copaiba oil was able to improve the balance between nitric oxide and reactive oxygen species in lungs and the pulmonary artery and to reduce PVR, which could explain a decrease in RV hypertrophy in this PAH model.
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Affiliation(s)
| | - Patrick Turck
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | | | | | - Alexsandra Zimmer
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Adriane Belló-Klein
- Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Becker CU, Sartório CL, Campos-Carraro C, Siqueira R, Colombo R, Zimmer A, Belló-Klein A. Exercise training decreases oxidative stress in skeletal muscle of rats with pulmonary arterial hypertension. Arch Physiol Biochem 2022; 128:1330-1338. [PMID: 32449880 DOI: 10.1080/13813455.2020.1769679] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The effects of exercise training on oxidative stress in gastrocnemius of rats with pulmonary hypertension were studied. Four groups were established: sedentary control (SC), sedentary monocrotaline (SM), trained control (TC), trained monocrotaline (TM). Exercise was applied for 4 weeks, 5 days/week, 50-60 min/session, at 60% of VO2 max. Right ventricular (RV) pressures were measured, heart and gastrocnemius were removed for morphometric/biochemical analysis. Lipid peroxidation (LPO), H2O2, GSH/GSSG, and activity/expression of antioxidant enzymes were evaluated. Increased RV hypertrophy, systolic and end-diastolic pressures (RVEDP) were observed in SM animals, and the RVEDP was decreased in TM vs. SM. H2O2, SOD-1, and LPO were higher in the SM group than in SC. In TM, H2O2 was further increased when compared to SM, with a rise in antioxidant defences and a decrease in LPO. GSH/GSSG was higher only in the TC group. Exercise induced an efficient antioxidant adaptation, preventing oxidative damage to lipids.
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Affiliation(s)
- C U Becker
- Cardiovascular Physiology Laboratory, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - C L Sartório
- Department of Physiological Sciences, Federal University of Espírito Santo (UFES), Vitória, Brazil
| | - C Campos-Carraro
- Cardiovascular Physiology Laboratory, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - R Siqueira
- Cardiovascular Physiology Laboratory, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - R Colombo
- Pharmacology and Physiology Laboratory, University of Caxias do Sul, Caxias do Sul, Brazil
| | - A Zimmer
- Cardiovascular Physiology Laboratory, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - A Belló-Klein
- Cardiovascular Physiology Laboratory, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Zancan LR, Bruinsmann FA, Paese K, Türck P, Bahr A, Zimmer A, Carraro CC, Schenkel PC, Belló-Klein A, Schwertz CI, Driemeier D, Pohlmann AR, Guterres SS. Oral delivery of ambrisentan-loaded lipid-core nanocapsules as a novel approach for the treatment of pulmonary arterial hypertension. Int J Pharm 2021; 610:121181. [PMID: 34653563 DOI: 10.1016/j.ijpharm.2021.121181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/04/2021] [Accepted: 10/08/2021] [Indexed: 12/29/2022]
Abstract
Ambrisentan (AMB) is an orphan drug approved for oral administration that has been developed for the treatment of pulmonary arterial hypertension (PAH), a chronic and progressive pathophysiological state that might result in death if left untreated. Lipid-core nanocapsules (LNCs) are versatile nanoformulations capable of loading lipophilic drugs for topical, vaginal, oral, intravenous, pulmonary, and nasal administration. Our hypothesis was to load AMB into these nanocapsules (LNCamb) and test their effect on slowing or reducing the progression of monocrotaline-induced PAH in a rat model, upon oral administration. LNCamb displayed a unimodal distribution of diameters (around 200 nm), negative zeta potential (-11.5 mV), high encapsulation efficiency (78%), spherical shape, and sustained drug release (50-60% in 24 h). The in vivo pharmacodynamic effect of the LNCamb group was evaluated by observing the echocardiography, hemodynamic, morphometric, and histological data, which showed a significant decrease in PAH in this group, as compared to the control group (AMBsolution). LNCamb showed the benefit of reversing systolic dysfunction and preventing vascular remodeling with greater efficacy than that observed in the control group. The originality and contribution of our work reveal the promising value of this nanoformulation as a novel therapeutic strategy for PAH treatment.
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Affiliation(s)
- Lali Ronsoni Zancan
- Programa de Pós-Graduação em Nanotecnologia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil
| | - Franciele Aline Bruinsmann
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil
| | - Karine Paese
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil
| | - Patrick Türck
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite 500, Porto Alegre 90050-170, RS, Brazil
| | - Alan Bahr
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite 500, Porto Alegre 90050-170, RS, Brazil
| | - Alexsandra Zimmer
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite 500, Porto Alegre 90050-170, RS, Brazil
| | - Cristina Campos Carraro
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite 500, Porto Alegre 90050-170, RS, Brazil
| | - Paulo Cavalheiro Schenkel
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite 500, Porto Alegre 90050-170, RS, Brazil
| | - Adriane Belló-Klein
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul (UFRGS), Rua Sarmento Leite 500, Porto Alegre 90050-170, RS, Brazil
| | - Claiton I Schwertz
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9090, Porto Alegre 91540-000, RS, Brazil
| | - David Driemeier
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9090, Porto Alegre 91540-000, RS, Brazil
| | - Adriana Raffin Pohlmann
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil
| | - Sílvia Stanisçuaski Guterres
- Programa de Pós-Graduação em Nanotecnologia, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil.
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Farahmand F, Malik A, Sharma A, Bagchi AK, Singal PK. Role of oxidative stress versus lipids in monocrotaline-induced pulmonary hypertension and right heart failure. Physiol Rep 2021; 9:e15090. [PMID: 34816616 PMCID: PMC8611258 DOI: 10.14814/phy2.15090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 10/03/2021] [Indexed: 11/24/2022] Open
Abstract
Pulmonary hypertension (PH) is a global health issue with a prevalence of 10% in ages >65 years. Right heart failure (RHF) is the main cause of death in PH. We have previously shown that monocrotaline (MCT)-induced PH and RHF are due to an increase in oxidative stress. In this study, probucol (PROB), a strong antioxidant with a lipid-lowering property, versus lovastatin (LOV), a strong lipid-lowering drug with some antioxidant effects, were evaluated for their effects on the MCT-induced RHF. Rats were treated (I.P.) with PROB (10 mg/kg ×12) or LOV (4 mg/kg ×12), daily 6 days before and 6 days after a single MCT injection (60 mg/kg). Serial echocardiography was performed and at 4-week post-MCT, lung wet-to-dry weight, hemodynamics, RV glutathione peroxidase (GSHPx), superoxide dismutase (SOD), catalase, lipid peroxidation, and myocardial as well as plasma lipids were examined. MCT increased RV systolic and diastolic pressures, wall thickness, RV end diastolic diameter, mortality, and decreased ejection fraction as well as pulmonary artery acceleration time. These changes were mitigated by PROB while LOV had no effect. Furthermore, PROB prevented lipid peroxidation, lowered lipids, and increased GSHPx and SOD in RV myocardium. LOV did decrease the lipids but had no effect on antioxidants and lipid peroxidation. A reduction in oxidative stress and not the lipid-lowering effect of PROB may explain the prevention of MCT-induced PH, RHF, and mortality. Thus targeting of oxidative stress as an adjuvant therapy is suggested.
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Affiliation(s)
| | - Akshi Malik
- Institute of Cardiovascular SciencesSt. Boniface Hospital Albrechtsen Research CentreDepartment of Physiology and PathophysiologyRady Faculty of Health SciencesUniversity of ManitobaWinnipegCanada
| | - Anita Sharma
- Research and Graduate StudiesThompson Rivers UniversityKamloopsCanada
| | - Ashim K. Bagchi
- Institute of Cardiovascular SciencesSt. Boniface Hospital Albrechtsen Research CentreDepartment of Physiology and PathophysiologyRady Faculty of Health SciencesUniversity of ManitobaWinnipegCanada
| | - Pawan K. Singal
- Institute of Cardiovascular SciencesSt. Boniface Hospital Albrechtsen Research CentreDepartment of Physiology and PathophysiologyRady Faculty of Health SciencesUniversity of ManitobaWinnipegCanada
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Diaba-Nuhoho P, Cour M, Hadebe N, Marais D, Lecour S, Blackhurst D. Chronic and moderate consumption of reduced-alcohol wine confers cardiac benefits in a rat model of pulmonary arterial hypertension. BMC Res Notes 2021; 14:324. [PMID: 34425891 PMCID: PMC8381534 DOI: 10.1186/s13104-021-05738-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/12/2021] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES In pulmonary arterial hypertension (PAH), right ventricular (RV) dysfunction develops via mechanisms involving oxidative stress. Moderate and chronic red wine (RW) consumption reduces oxidative stress and confers cardioprotection but its effect on PAH is unknown. We evaluated whether moderate and chronic consumption of reduced-alcohol RW (RARW) confers cardioprotection in a monocrotaline (MCT)-induced PAH rat model. RESULTS Rats were randomly grouped: control; MCT; RARW; MCT + RARW. Wine was diluted to mimic moderate intake for humans, and consumed from 7 days before, until 28 days after MCT-injection. Echocardiography measured pulmonary artery acceleration time (PAAT) and RV thickness. Conjugated dienes (CD), and thiobarbituric acid reactive substances (TBARS) concentrations were assessed. MCT induced RV thickness and decreased PAAT compared to controls [1.22 ± 0.09 mm vs 0.46 ± 0.02 mm and 14 ± 1 vs 23 ± 2 m/s, respectively (p < 0.001)]. Chronic RARW consumption limited MCT-induced RV hypertrophy and increased PAAT. CD and TBARS increased in MCT-treated animals compared to controls (672 ± 43 nmol/L vs 453 ± 35 nmol/L; p < 0.01 and 13 ± 2 µmol/L vs 4 ± 0.3 µmol/L; p < 0.01). RARW reduced MCT-induced CD (472 ± 27 nmol/L vs 672 ± 43 nmol/L; p < 0.01). CONCLUSION Chronic and moderate intake of RARW ameliorates MCT-induced PAH in rats, which may be partly attributable to reduction of lipid peroxidation.
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Affiliation(s)
- Patrick Diaba-Nuhoho
- Division of Chemical Pathology, Department of Pathology, University of Cape Town, Cape Town, South Africa.
- Division of Vascular Endothelium and Microcirculation, Department of Medicine III, University of Technology Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
| | - Martin Cour
- Cardioprotection Group, Hatter Cardiovascular Institute and Lionel Opie Preclinical Imaging Core Facility, University of Cape Town, Cape Town, South Africa
| | - Nkanyiso Hadebe
- Cardioprotection Group, Hatter Cardiovascular Institute and Lionel Opie Preclinical Imaging Core Facility, University of Cape Town, Cape Town, South Africa
- Department of Anaesthesia, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
| | - David Marais
- Division of Chemical Pathology, Department of Pathology, University of Cape Town, Cape Town, South Africa
| | - Sandrine Lecour
- Cardioprotection Group, Hatter Cardiovascular Institute and Lionel Opie Preclinical Imaging Core Facility, University of Cape Town, Cape Town, South Africa
| | - Dee Blackhurst
- Division of Chemical Pathology, Department of Pathology, University of Cape Town, Cape Town, South Africa
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Pulmonary arterial hypertension induces the release of circulating extracellular vesicles with oxidative content and alters redox and mitochondrial homeostasis in the brains of rats. Hypertens Res 2021; 44:918-931. [PMID: 33875858 DOI: 10.1038/s41440-021-00660-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/09/2021] [Accepted: 03/14/2021] [Indexed: 02/03/2023]
Abstract
Pulmonary arterial hypertension (PAH) is characterized by increased resistance of the pulmonary vasculature and afterload imposed on the right ventricle (RV). Two major contributors to the worsening of this disease are oxidative stress and mitochondrial impairment. This study aimed to explore the effects of monocrotaline (MCT)-induced PAH on redox and mitochondrial homeostasis in the RV and brain and how circulating extracellular vesicle (EV) signaling is related to these phenomena. Wistar rats were divided into control and MCT groups (60 mg/kg, intraperitoneal), and EVs were isolated from blood on the day of euthanasia (21 days after MCT injections). There was an oxidative imbalance in the RV, brain, and EVs of MCT rats. PAH impaired mitochondrial function in the RV, as seen by a decrease in the activities of mitochondrial complex II and citrate synthase and manganese superoxide dismutase (MnSOD) protein expression, but this function was preserved in the brain. The key regulators of mitochondrial biogenesis, namely, proliferator-activated receptor gamma coactivator 1-alpha and sirtuin 1, were poorly expressed in the EVs of MCT rats, and this result was positively correlated with MnSOD expression in the RV and negatively correlated with MnSOD expression in the brain. Based on these findings, we can conclude that the RV is severely impacted by the development of PAH, but this pathological injury may signal the release of circulating EVs that communicate with different organs, such as the brain, helping to prevent further damage through the upregulation of proteins involved in redox and mitochondrial function.
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Zimmer A, Teixeira RB, Constantin RL, Campos-Carraro C, Aparicio Cordero EA, Ortiz VD, Donatti L, Gonzalez E, Bahr AC, Visioli F, Baldo G, Luz de Castro A, Araujo AS, Belló-Klein A. The progression of pulmonary arterial hypertension induced by monocrotaline is characterized by lung nitrosative and oxidative stress, and impaired pulmonary artery reactivity. Eur J Pharmacol 2021; 891:173699. [PMID: 33160936 DOI: 10.1016/j.ejphar.2020.173699] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/20/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023]
Abstract
The time-course of pulmonary arterial hypertension in the monocrotaline (MCT) model was investigated. Male rats were divided into two groups: MCT (received a 60 mg/kg i.p. injection) and control (received saline). The MCT and control groups were further divided into three cohorts, based on the follow-up interval: 1, 2, and 3 weeks. Right ventricle (RV) catheterization was performed and RV hypertrophy (RVH) was estimated. The lungs were used for biochemical, histological, molecular, and immunohistochemical analysis, while pulmonary artery rings were used for vascular reactivity. MCT promoted lung perivascular edema, inflammatory cells exudation, greater neutrophils and lymphocytes profile, and arteriolar wall thickness, compared to CTR group. Increases in pulmonary artery pressure and in RVH were observed in the MCT 2- and 3-week groups. The first week was marked by the presence of nitrosative stress (50% moderate and 33% accentuated staining by nitrotyrosine). These alterations lead to an adaptation of NO production by NO synthase activity after 2 weeks. Oxidative stress was evident in the third week, probably by an imbalance between endothelin-1 receptors, resulting in extracellular matrix remodeling, endothelial dysfunction, and RVH. Also, it was found a reduced pulmonary arterial vasodilatory response to acetylcholine after 2 (55%) and 3 (45%) weeks in MCT groups. The relevance of this study is precisely to show that nitrosative and oxidative stress predominate in distinct time windows of the disease progression.
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Affiliation(s)
- Alexsandra Zimmer
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Rayane Brinck Teixeira
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Rosalia Lempk Constantin
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Cristina Campos-Carraro
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | | | - Vanessa Duarte Ortiz
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Luiza Donatti
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Esteban Gonzalez
- Gene Therapy Center, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
| | - Alan Christhian Bahr
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Fernanda Visioli
- Faculty of Dentistry, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Guilherme Baldo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil; Gene Therapy Center, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
| | - Alexandre Luz de Castro
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Alex Sander Araujo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Adriane Belló-Klein
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
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9
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Türck P, Fraga S, Salvador I, Campos-Carraro C, Lacerda D, Bahr A, Ortiz V, Hickmann A, Koetz M, Belló-Klein A, Henriques A, Agostini F, da Rosa Araujo AS. Blueberry extract decreases oxidative stress and improves functional parameters in lungs from rats with pulmonary arterial hypertension. Nutrition 2019; 70:110579. [PMID: 31743815 DOI: 10.1016/j.nut.2019.110579] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 05/08/2019] [Accepted: 05/20/2019] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Pulmonary arterial hypertension (PAH) is a condition characterized by an increased resistance of pulmonary vasculature, culminating in an increase in pulmonary pressure. This process involves disturbances in lung redox homeostasis, causing progressive right heart failure. In this context, the use of natural antioxidants, such as those found in blueberries, may represent a therapeutic approach. The aim of this study was to evaluate the effect of blueberry extract (BB) on functional parameters and oxidative stress levels in rat lungs with induced PAH. METHODS Forty-eight male Wistar rats (weighing 200 ± 20 g) were randomized into five groups: control, monocrotaline, monocrotaline + BB 50, monocrotaline + BB 100, and monocrotaline + BB 200. PAH was induced by the administration of monocrotaline (60 mg/kg, intraperitoneal). Rats were treated with BB at doses of 50, 100, and 200 mg/kg via gavage for 5 wk (2 wk before monocrotaline and 3 wk after monocrotaline injection). At day 35, rats were submitted to echocardiography and catheterization. They were then sacrificed and lungs were harvested for biochemical analyses. RESULTS BB increased the E/A ratio of blood flow across the tricuspid valve and tricuspid annular phase systolic excursion, as wells as decreased the mean pulmonary artery pressure of animals compared with the PAH group. Moreover, BB decreased total reactive species concentration and lipid oxidation, reduced activity of nicotinamide adenine dinucleotide phosphate oxidase and expression of xanthine oxidase, increased the activity of superoxide dismutase and restored sulfhydryl content in the animal lungs compared with those in the PAH group. Additionally, BB restored expression of the antioxidant transcriptional factor Nrf2 in the lungs of the animal subjects. Finally, BB normalized the endothelin receptor (ETA/ETB) expression ratio in the animal lungs, which were increased in the PAH group. CONCLUSION Intervention with BB mitigated functional PAH outcomes through improvement of the pulmonary redox state. Our results provide a basis for future research on natural antioxidant interventions as a novel treatment strategy in PAH.
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Affiliation(s)
- Patrick Türck
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil.
| | - Schauana Fraga
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Isadora Salvador
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Cristina Campos-Carraro
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Denise Lacerda
- Postgraduate Program in Biological Sciences: Pharmacology and Therapeutics, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Alan Bahr
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Vanessa Ortiz
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Alexandre Hickmann
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Mariana Koetz
- Postgraduate Program in Pharmaceutical Sciences, Pharmacy College, Federal University of Rio Grande do Sul, Brazil
| | - Adriane Belló-Klein
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
| | - Amélia Henriques
- Postgraduate Program in Pharmaceutical Sciences, Pharmacy College, Federal University of Rio Grande do Sul, Brazil
| | - Fabiana Agostini
- Postgraduate Program at Biosciences and Rehabilitation, Centro Universitário Metodista-IPA, Porto Alegre, Brazil
| | - Alex Sander da Rosa Araujo
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil; Postgraduate Program in Biological Sciences: Pharmacology and Therapeutics, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Brazil
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10
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Copaiba Oil Attenuates Right Ventricular Remodeling by Decreasing Myocardial Apoptotic Signaling in Monocrotaline-Induced Rats. J Cardiovasc Pharmacol 2019; 72:214-221. [PMID: 30212415 DOI: 10.1097/fjc.0000000000000617] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
There is an increase in oxidative stress and apoptosis signaling during the transition from hypertrophy to right ventricular (RV) failure caused by pulmonary arterial hypertension (PAH) induced by monocrotaline (MCT). In this study, it was evaluated the action of copaiba oil on the modulation of proteins involved in RV apoptosis signaling in rats with PAH. Male Wistar rats (±170 g, n = 7/group) were divided into 4 groups: control, MCT, copaiba oil, and MCT + copaiba oil. PAH was induced by MCT (60 mg/kg intraperitoneally) and, 7 days later, treatment with copaiba oil (400 mg/kg by gavage) was given for 14 days. Echocardiographic and hemodynamic measurements were performed, and the RV was collected for morphometric evaluations, oxidative stress, apoptosis, and cell survival signaling, and eNOS protein expression. Copaiba oil reduced RV hypertrophy (24%), improved RV systolic function, and reduced RV end-diastolic pressure, increased total sulfhydryl levels and eNOS protein expression, reduced lipid and protein oxidation, and the expression of proteins involved in apoptosis signaling in the RV of MCT + copaiba oil as compared to MCT group. In conclusion, copaiba oil reduced oxidative stress, and apoptosis signaling in RV of rats with PAH, which may be associated with an improvement in cardiac function caused by this compound.
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11
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de Lima-Seolin BG, Hennemann MM, Fernandes RO, Colombo R, Bonetto JHP, Teixeira RB, Khaper N, Godoy AEG, Litvin IE, Sander da Rosa Araujo A, Schenkel PC, Belló-Klein A. Bucindolol attenuates the vascular remodeling of pulmonary arteries by modulating the expression of the endothelin-1 A receptor in rats with pulmonary arterial hypertension. Biomed Pharmacother 2018; 99:704-714. [DOI: 10.1016/j.biopha.2018.01.127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 12/19/2022] Open
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12
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Effect of Free and Nanoencapsulated Copaiba Oil on Monocrotaline-induced Pulmonary Arterial Hypertension. J Cardiovasc Pharmacol 2017; 69:79-85. [PMID: 27798416 DOI: 10.1097/fjc.0000000000000442] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Copaiba oil comes from an Amazonian tree and has been used as an alternative medicine in Brazil. However, it has not been investigated yet in the treatment of cardiovascular diseases. This study was designed to test whether copaiba oil or nanocapsules containing this oil could modulate monocrotaline (MCT)-induced pulmonary arterial hypertension (PAH). Male Wistar rats (170 ± 20 g) received oil or nanocapsules containing this oil (400 mg/kg) by gavage daily for 1 week. At the end of this period, a single injection of MCT (60 mg/kg i.p.) was administered and measurements were performed after 3 weeks. The animals were divided into 6 groups: control, copaiba oil, nanocapsules with copaiba oil, MCT, oil + MCT, and nanocapsules + MCT. Afterward, echocardiographic assessments were performed, and rats were killed to collect hearts for morphometry and oxidative stress. MCT promoted a significant increase in pulmonary vascular resistance, right ventricle (RV) hypertrophy, and RV oxidative stress. Both oil and copaiba nanocapsules significantly reduced RV hypertrophy and oxidative stress. Pulmonary vascular resistance was reduced by copaiba oil in natura but not by nanocapsules. In conclusion, copaiba oil seems to offer protection against MCT-induced PAH. Our preliminary results suggest that copaiba oil may be an important adjuvant treatment for PAH.
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13
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Siqueira R, Colombo R, Conzatti A, de Castro AL, Carraro CC, Tavares AMV, Fernandes TRG, Araujo ASDR, Belló-Klein A. Effects of ovariectomy on antioxidant defence systems in the right ventricle of female rats with pulmonary arterial hypertension induced by monocrotaline. Can J Physiol Pharmacol 2017; 96:295-303. [PMID: 28854338 DOI: 10.1139/cjpp-2016-0445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to evaluate the impact of ovariectomy on oxidative stress in the right ventricle (RV) of female rats with pulmonary arterial hypertension (PAH) induced by monocrotaline (MCT). Rats were divided into 4 groups (n = 6 per group): sham (S), sham + MCT (SM), ovariectomized (O), and ovariectomized + MCT (OM). MCT (60 mg·kg-1 i.p.) was injected 1 week after ovariectomy or sham surgery. Three weeks later, echocardiographic analysis and RV catheterisation were performed. RV morphometric, biochemical, and protein expression analysis through Western blotting were done. MCT promoted a slight increase in pulmonary artery pressure, without differences between the SM and OM groups, but did not induce RV hypertrophy. RV hydrogen peroxide increased in the MCT groups, but SOD, CAT, and GPx activities were also enhanced. Non-classical antioxidant defenses diminished in ovariectomized groups, probably due to a decrease in the nuclear factor Nrf2. Hemoxygenase-1 and thioredoxin-1 protein expression was increased in the OM group compared with SM, being accompanied by an elevation in the estrogen receptor β (ER-β). Hemoxygenase-1 and thioredoxin-1 may be involved in the modulation of oxidative stress in the OM group, and this could be responsible for attenuation of PAH and RV remodeling.
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Affiliation(s)
- Rafaela Siqueira
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Rafael Colombo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Adriana Conzatti
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Alexandre Luz de Castro
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Cristina Campos Carraro
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Angela Maria Vicente Tavares
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Tânia Regina Gattelli Fernandes
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Alex Sander da Rosa Araujo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Adriane Belló-Klein
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.,Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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14
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Puukila S, Fernandes RO, Türck P, Carraro CC, Bonetto JHP, de Lima-Seolin BG, da Rosa Araujo AS, Belló-Klein A, Boreham D, Khaper N. Secoisolariciresinol diglucoside attenuates cardiac hypertrophy and oxidative stress in monocrotaline-induced right heart dysfunction. Mol Cell Biochem 2017; 432:33-39. [PMID: 28321539 DOI: 10.1007/s11010-017-2995-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 03/04/2017] [Indexed: 10/19/2022]
Abstract
Pulmonary arterial hypertension (PAH) occurs when remodeling of pulmonary vessels leads to increased pulmonary vascular resistance resulting in increased pulmonary arterial pressure. Increased pulmonary arterial pressure results in right ventricle hypertrophy and eventually heart failure. Oxidative stress has been implicated in the pathogenesis of PAH and may play a role in the regulation of cellular signaling involved in cardiac response to pressure overload. Secoisolariciresinol diglucoside (SDG), a component from flaxseed, has been shown to reduce cardiac oxidative stress in various pathophysiological conditions. We investigated the potential protective effects of SDG in a monocrotaline-induced model of PAH. Five- to six-week-old male Wistar rats were given a single intraperitoneal injection of monocrotaline (60 mg/kg) and sacrificed 21 days later where heart, lung, and plasma were collected. SDG (25 mg/kg) was given via gavage as either a 21-day co-treatment or pre-treatment of 14 days before monocrotaline administration and continued for 21 days. Monocrotaline led to right ventricle hypertrophy, increased lipid peroxidation, and elevated plasma levels of alanine transaminase (ALT) and aspartate transaminase (AST). Co-treatment with SDG did not attenuate hypertrophy or ALT and AST levels but decreased reactive oxygen species (ROS) levels and catalase and superoxide dismutase activity compared to the monocrotaline-treated group. Pre-treatment with SDG decreased right ventricle hypertrophy, ROS levels, lipid peroxidation, catalase, superoxide dismutase, and glutathione peroxidase activity and plasma levels of ALT and AST when compared to the monocrotaline group. These findings indicate that pre-treatment with SDG provided better protection than co-treatment in this model of right heart dysfunction, suggesting an important role for SDG in PAH and right ventricular remodeling.
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Affiliation(s)
- Stephanie Puukila
- Department of Biology, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B 5E1, Canada
| | - Rafael Oliveira Fernandes
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil.,Department of Pediatrics, Sainte-Justine University Hospital Research Center, University of Montreal, 3175 Côte Sainte-Catherine, Montreal, QC, H3T 1C5, Canada
| | - Patrick Türck
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Cristina Campos Carraro
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Jéssica Hellen Poletto Bonetto
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Bruna Gazzi de Lima-Seolin
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Alex Sander da Rosa Araujo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Adriane Belló-Klein
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, Porto Alegre, RS, 90050-170, Brazil
| | - Douglas Boreham
- Northern Ontario School of Medicine, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON, P3E 2C6, Canada
| | - Neelam Khaper
- Medical Sciences Division, Northern Ontario School of Medicine, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B 5E1, Canada.
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15
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Lima-Seolin BGD, Colombo R, Bonetto JHP, Teixeira RB, Donatti LM, Casali KR, Godoy AEG, Litvin IE, Schenkel PC, Rosa Araujo ASD, Belló-Klein A. Bucindolol improves right ventricle function in rats with pulmonary arterial hypertension through the reversal of autonomic imbalance. Eur J Pharmacol 2016; 798:57-65. [PMID: 28011346 DOI: 10.1016/j.ejphar.2016.12.028] [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: 09/30/2016] [Revised: 12/15/2016] [Accepted: 12/19/2016] [Indexed: 12/22/2022]
Abstract
Pulmonary arterial hypertension (PAH) is characterised by an elevation in afterload imposed on the right ventricle (RV), leading to hypertrophy and failure. The autonomic nervous system (ANS) plays a key role in the progression to heart failure, and the use of beta-blockers attenuates this process. The aim of this study was to verify the role of bucindolol, aβ1-, β2- and α1-blocker, on the ANS, and its association with RV function in rats with PAH. Male Wistar rats were divided into four groups: control, monocrotaline, control+bucindolol, and monocrotaline+bucindolol. PAH was induced by a single intraperitoneal injection of monocrotaline (60mg/kg). After two weeks, animals were treated for seven days with bucindolol (2mg/kg/day i.p.) or vehicle. At the end of the treatment, animals underwent echocardiographic assessment, catheterisation of the femoral artery and RV, and tissue collection for morphometric and histological evaluation. In the monocrotaline+bucindolol group, there was a decrease in mean pulmonary artery pressure (33%) and pulmonary congestion (21%), when compared to the monocrotaline. Bucindolol treatment also reduced RV pleomorphism, necrosis, fibrosis and infiltration of inflammatory cells. An improvement in RV systolic function was also observed in the monocrotaline+bucindolol group compared to the monocrotaline. In addition, bucindolol promoted a decrease in the cardiac sympathovagal balance (93%) by reducing sympathetic drive (70%) and increasing parasympathetic drive (142%). Bucindolol also reduced blood pressure variability (75%). Our results show that the beneficial effects from bucindolol treatment appeared to be a consequence of the reversal of monocrotaline-induced autonomic imbalance.
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Affiliation(s)
- Bruna Gazzi de Lima-Seolin
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Rafael Colombo
- Laboratory of Pharmacology and Physiology, Universidade de Caxias do Sul (UCS), Rio Grande do Sul, Brazil.
| | - Jéssica Hellen Poletto Bonetto
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Rayane Brinck Teixeira
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Luiza Mezzomo Donatti
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Karina Rabello Casali
- Institute of Science and Technology (ICT), Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Isnard Elman Litvin
- Research Institute for Multicenter Studies (IPCEM), Universidade de Caxias do Sul (UCS), Rio Grande do Sul, Brazil.
| | - Paulo Cavalheiro Schenkel
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Alex Sander da Rosa Araujo
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
| | - Adriane Belló-Klein
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Institute of Basic Health Science (ICBS), Universidade Federal do Rio Grande do Sul (UFRGS), Rio Grande do Sul, Brazil.
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16
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Bal E, Ilgin S, Atli O, Ergun B, Sirmagul B. The effects of gender difference on monocrotaline-induced pulmonary hypertension in rats. Hum Exp Toxicol 2014; 32:766-74. [PMID: 23821593 DOI: 10.1177/0960327113477874] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The present study aimed to compare the effect of gender difference on hemodynamic consequences in the development of monocrotaline (MCT)-induced pulmonary hypertension in rat. The effect of antioxidant enzyme systems on the development of pulmonary hypertension mediated by the phytotoxin MCT and the effect of gender on these antioxidant systems were also investigated. For this purpose, the right ventricular pressures (RVPs) and right ventricular/heart weight (HW) ratios were compared between groups and the glutathione (GSH) level and superoxide dismutase (SOD), catalase (CAT) and glutathione-S-transferase (GST) activities were determined in lung and liver tissue samples of rats. RVP and right ventricular/HW ratios significantly increased in the MCT group compared to the control group. In the MCT group, RVP was significantly higher in males than females. MCT-induced pulmonary hypertension resulted in decreased GSH level, decreased GST and SOD activities and increased CAT activity in lung and liver tissues of both male and female rats. In addition, the lung and liver GSH level and GST and SOD levels were higher in female control rats compared to male control rats. The results of the present study, that antioxidant enzyme activities were different between the groups, highlight the possible role of oxidative stress in the pathogenesis of MCT-induced pulmonary hypertension in rats. Moreover, the lower antioxidant defense capacity of male rats than female rats may be considered as a cause of more aggressive course of MCT-induced pulmonary hypertension in males compared to females.
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Affiliation(s)
- E Bal
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, Eskisehir, Turkey
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17
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Peinado J, López de Lerma N, Peralbo-Molina A, Priego-Capote F, de Castro C, McDonagh B. Sunlight exposure increases the phenolic content in postharvested white grapes. An evaluation of their antioxidant activity in Saccharomyces cerevisiae. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.06.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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18
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Colombo R, Siqueira R, Becker CU, Fernandes TG, Pires KM, Valença SS, Souza-Rabbo MP, Araujo AS, Belló-Klein A. Effects of exercise on monocrotaline-induced changes in right heart function and pulmonary artery remodeling in rats. Can J Physiol Pharmacol 2013; 91:38-44. [DOI: 10.1139/cjpp-2012-0261] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Pulmonary arterial hypertension (PAH) induced by monocrotaline (MCT) is an experimental protocol of right heart failure. We analyzed the role of exercise training on the right ventricle structure and function, pulmonary artery remodeling, and GSK-3β expression. Rats were divided among the following groups: sedentary control (SC), sedentary monocrotaline (SM), trained control (TC), and trained monocrotaline (TM). Rats underwent exercise training for a period of 5 weeks, with 3 weeks post-MCT injection. Rats in the SM and TM groups presented with an increase in right ventricle hypertrophy indexes and lung congestion. The right ventricular end diastolic pressure (RVEDP), right ventricular systolic pressure (RVSP), and its minimum and maximal pressure derivates were increased in the SM and TM groups. The right ventricle interstitial volume pulmonary artery thickness and p-GSK-3β/GSK-3β were increased in the MCT groups as compared with the control groups. The TM group had a reduction in interstitial volume, p-GSK-3β/GSK-3β ratio, pulmonary artery thickness, RVEDP, and an increase in intramyocardial vessels volume as compared with the SM group. The overall results have shown that the exercise protocol used promoted positive changes in right ventricle and pulmonary artery remodeling. These observations also suggest that structural remodeling may be influenced by signaling proteins, such as GSK-3β.
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Affiliation(s)
- Rafael Colombo
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, CEP 90050-170, Porto Alegre, Brasil
| | - Rafaela Siqueira
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, CEP 90050-170, Porto Alegre, Brasil
| | - Cristiano Urbano Becker
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, CEP 90050-170, Porto Alegre, Brasil
| | - Tânia Gatelli Fernandes
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, CEP 90050-170, Porto Alegre, Brasil
| | - Karla Maria Pires
- Laboratório de Inflamação, Estresse Oxidativo e Câncer, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | - Samuel Santos Valença
- Laboratório de Inflamação, Estresse Oxidativo e Câncer, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil
| | | | - Alex Sander Araujo
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, CEP 90050-170, Porto Alegre, Brasil
| | - Adriane Belló-Klein
- Laboratório de Fisiologia Cardiovascular e Espécies Ativas de Oxigênio, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500, CEP 90050-170, Porto Alegre, Brasil
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Effects of Purple Grape Juice in the Redox-sensitive Modulation of Right Ventricular Remodeling in a Pulmonary Arterial Hypertension Model. J Cardiovasc Pharmacol 2012; 60:15-22. [DOI: 10.1097/fjc.0b013e3182550fd6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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20
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Leichsenring-Silva F, Tavares AMV, Mosele F, Berger B, Llesuy S, Belló-Klein A. Association of the time course of pulmonary arterial hypertension with changes in oxidative stress in the left ventricle. Clin Exp Pharmacol Physiol 2011; 38:804-10. [DOI: 10.1111/j.1440-1681.2011.05608.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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21
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Siqueira R, Campos C, Colombo R, Becker CU, Fernandes TRG, Araújo ASR, Belló-Klein A. Influence of estrogen on pulmonary arterial hypertension: role of oxidative stress. Cell Biochem Funct 2011; 29:543-8. [DOI: 10.1002/cbf.1784] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- R. Siqueira
- Laboratório de Fisiologia Cardiovascular; Departamento de Fisiologia; Instituto de Ciências Básicas da Saúde; Universidade Federal do Rio Grande do Sul; Porto Alegre; RS; Brazil
| | - C. Campos
- Laboratório de Fisiologia Cardiovascular; Departamento de Fisiologia; Instituto de Ciências Básicas da Saúde; Universidade Federal do Rio Grande do Sul; Porto Alegre; RS; Brazil
| | - R. Colombo
- Laboratório de Fisiologia Cardiovascular; Departamento de Fisiologia; Instituto de Ciências Básicas da Saúde; Universidade Federal do Rio Grande do Sul; Porto Alegre; RS; Brazil
| | - C. U. Becker
- Laboratório de Fisiologia Cardiovascular; Departamento de Fisiologia; Instituto de Ciências Básicas da Saúde; Universidade Federal do Rio Grande do Sul; Porto Alegre; RS; Brazil
| | - T. R. G. Fernandes
- Laboratório de Fisiologia Cardiovascular; Departamento de Fisiologia; Instituto de Ciências Básicas da Saúde; Universidade Federal do Rio Grande do Sul; Porto Alegre; RS; Brazil
| | - A. S. R. Araújo
- Laboratório de Fisiologia Cardiovascular; Departamento de Fisiologia; Instituto de Ciências Básicas da Saúde; Universidade Federal do Rio Grande do Sul; Porto Alegre; RS; Brazil
| | - A. Belló-Klein
- Laboratório de Fisiologia Cardiovascular; Departamento de Fisiologia; Instituto de Ciências Básicas da Saúde; Universidade Federal do Rio Grande do Sul; Porto Alegre; RS; Brazil
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