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Lisboa CD, Maciel de Souza JL, Gaspar CJ, Turck P, Ortiz VD, Teixeira Proença IC, Fernandes TRG, Fernandes E, Tasca S, Carraro CC, Belló-Klein A, Sander da Rosa Araujo A, Luz de Castro A. Melatonin effects on oxidative stress and on TLR4/NF-kβ inflammatory pathway in the right ventricle of rats with pulmonary arterial hypertension. Mol Cell Endocrinol 2024; 592:112330. [PMID: 39002930 DOI: 10.1016/j.mce.2024.112330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/19/2024] [Accepted: 07/10/2024] [Indexed: 07/15/2024]
Abstract
Pulmonary arterial hypertension (PAH) is characterised by an increase in mean pulmonary arterial pressure and a compromised the right ventricle (RV), together with progression to heart failure and premature death. Studies have evaluated the role of melatonin as a promising therapeutic strategy for PAH. The objective of this study was to evaluate melatonin's effects on oxidative stress and on the TLR4/NF-kβ inflammatory pathway in the RV of rats with PAH. Male Wistar rats were divided into the following groups: control, monocrotaline (MCT), and monocrotaline plus melatonin groups. These two last groups received one intraperitoneal injection of MCT (60 mg/kg) on the first day of experimental protocol. The monocrotaline plus melatonin group received 10 mg/kg/day of melatonin by gavage for 21 days. Echocardiographic analysis was performed, and the RV was collected for morphometric analysis oxidative stress and molecular evaluations. The main findings of the present study were that melatonin administration attenuated the reduction in RV function that was induced by monocrotaline, as assessed by TAPSE. In addition, melatonin prevented RV diastolic area reduction caused by PAH. Furthermore, animals treated with melatonin did not show an increase in ROS levels or in NF-kβ expression. In addition, the monocrotaline plus melatonin group showed a reduction in TLR4 expression when compared with control and monocrotaline groups. To our knowledge, this is the first study demonstrating a positive effect of melatonin on the TLR4/NF-kβ pathway in the RV of rats with PAH. In this sense, this study makes it possible to think of melatonin as a possible ally in mitigating RV alterations caused by PAH.
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Affiliation(s)
- Cristiane Dias Lisboa
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - José Luciano Maciel de Souza
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Custódio José Gaspar
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Patrick Turck
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Vanessa Duarte Ortiz
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Isabel Cristina Teixeira Proença
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Tânia Regina G 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), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Elissa 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), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Silvio Tasca
- Laboratory of Cardiovascular Physiology and Reactive Oxygen Species, Physiology Department, Institute of Basic Health Science (ICBS), Federal University of Rio Grande do Sul (UFRGS), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, 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), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, 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), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, 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), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, 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), Ramiro Barcelos Street, 2600, Santa Cecília, CEP: 90035-003, Porto Alegre, RS, Brazil.
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2
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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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3
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Making a case for metallothioneins conferring cardioprotection in pulmonary hypertension. Med Hypotheses 2020; 137:109572. [DOI: 10.1016/j.mehy.2020.109572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/30/2019] [Accepted: 01/15/2020] [Indexed: 11/23/2022]
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Zimmer A, Teixeira RB, Bonetto JHP, Bahr AC, Türck P, de Castro AL, Campos-Carraro C, Visioli F, Fernandes-Piedras TR, Casali KR, Scassola CMC, Baldo G, Araujo AS, Singal P, Belló-Klein A. Role of inflammation, oxidative stress, and autonomic nervous system activation during the development of right and left cardiac remodeling in experimental pulmonary arterial hypertension. Mol Cell Biochem 2019; 464:93-109. [DOI: 10.1007/s11010-019-03652-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/08/2019] [Indexed: 12/14/2022]
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5
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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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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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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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Kharin SN, Krandycheva VV, Tsvetkova AS, Shumikhin KV. Remodeling of ventricular repolarization in experimental right ventricular hypertrophy. J Electrocardiol 2017; 50:626-633. [PMID: 28554514 DOI: 10.1016/j.jelectrocard.2017.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Indexed: 01/30/2023]
Abstract
BACKGROUND To understand electrophysiological mechanisms that underlie the progression of compensated right ventricular hypertrophy (RVH) to heart failure, the purpose of the study was to evaluate remodeling of ventricular repolarization in connection with hemodynamic abnormalities and vulnerability of the heart ventricles to arrhythmias in RVH rats with pulmonary arterial hypertension (PAH) and heart failure. METHODS PAH followed by heart failure was induced by monocrotaline in adult female Wistar rats. Unipolar epicardial electrograms and cardiac hemodynamic parameters were recorded in situ. Vulnerability to ventricular arrhythmias was measured as the threshold dose of aconitine required to produce sustained ventricular tachycardia. Histological examination of the heart ventricles was performed. Activation-recovery intervals (ARIs) and ARI dispersions were used as indices of durations and heterogeneity of repolarization respectively to assess ventricular repolarization. RESULTS AND CONCLUSIONS The development of compensated RVH was characterized by the dramatic prolongation of repolarization against the less expressed increase in repolarization heterogeneity, whereas the dramatic increase in repolarization heterogeneity against the less expressed but inhomogeneous prolongation of repolarization occurred in the progression of compensated RVH to heart failure. These changes increased vulnerability of the failing heart but not the compensated heart to aconitine-induced ventricular arrhythmias.
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Affiliation(s)
- S N Kharin
- Laboratory of Cardiac Physiology, Institute of Physiology of the Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 50 Pervomayskaya Street, GSP-2, Syktyvkar, Komi Republic, Russian Federation; Department of Physiology, Medical Institute, Federal State Budget Educational Institution of Higher Education «Syktyvkar State University named after Pitirim Sorokin», 11 Babushkin Street, Syktyvkar, Komi Republic, Russian Federation.
| | - V V Krandycheva
- Laboratory of Cardiac Physiology, Institute of Physiology of the Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 50 Pervomayskaya Street, GSP-2, Syktyvkar, Komi Republic, Russian Federation; Department of Physiology, Medical Institute, Federal State Budget Educational Institution of Higher Education «Syktyvkar State University named after Pitirim Sorokin», 11 Babushkin Street, Syktyvkar, Komi Republic, Russian Federation
| | - A S Tsvetkova
- Laboratory of Cardiac Physiology, Institute of Physiology of the Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, 50 Pervomayskaya Street, GSP-2, Syktyvkar, Komi Republic, Russian Federation
| | - K V Shumikhin
- Department of Physiology, Medical Institute, Federal State Budget Educational Institution of Higher Education «Syktyvkar State University named after Pitirim Sorokin», 11 Babushkin Street, Syktyvkar, Komi Republic, Russian Federation
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9
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Maarman GJ, Schulz R, Sliwa K, Schermuly RT, Lecour S. Novel putative pharmacological therapies to protect the right ventricle in pulmonary hypertension: a review of current literature. Br J Pharmacol 2017; 174:497-511. [PMID: 28099680 DOI: 10.1111/bph.13721] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/06/2016] [Accepted: 09/27/2016] [Indexed: 12/15/2022] Open
Abstract
Pulmonary hypertension (PH) is defined by elevated mean pulmonary artery pressure following the pathological remodelling of small pulmonary arteries. An increase in right ventricular (RV) afterload results in RV hypertrophy and RV failure. The pathophysiology of PH, and RV remodelling in particular, is not well understood, thus explaining, at least in part, why current PH therapies have a limited effect. Existing therapies mostly target the pulmonary circulation. Because the remodelled RV fails to support normal cardiac function, patients eventually succumb from RV failure. Developing novel therapies that directly target the function of the RV may therefore benefit patients with PH. In the past decade, several promising studies have investigated novel cardioprotective strategies in experimental models of PH. This review aims to comprehensively discuss and highlight these novel experimental approaches to confer, in the long-term, greater health benefit in patients with PH.
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Affiliation(s)
- Gerald J Maarman
- Hatter Institute for Cardiovascular Research in Africa (HICRA) and MRC Inter-University Cape Heart Group, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Rainer Schulz
- Institute of Physiology, Justus Liebig University Giessen, Giessen, Germany
| | - Karen Sliwa
- Hatter Institute for Cardiovascular Research in Africa (HICRA) and MRC Inter-University Cape Heart Group, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Ralph Theo Schermuly
- Universities of Giessen and Marburg Lung Centre, Member of the German Lung Centre (DZL), Justus Liebig University Giessen, Giessen, Germany
| | - Sandrine Lecour
- Hatter Institute for Cardiovascular Research in Africa (HICRA) and MRC Inter-University Cape Heart Group, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
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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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Maarman G, Blackhurst D, Thienemann F, Blauwet L, Butrous G, Davies N, Sliwa K, Lecour S. Melatonin as a preventive and curative therapy against pulmonary hypertension. J Pineal Res 2015. [PMID: 26201290 DOI: 10.1111/jpi.12263] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Pulmonary hypertension (PH) is characterized by elevated pulmonary arterial pressure, which leads to right ventricular (RV) hypertrophy and failure. The pathophysiological mechanisms of PH remain unclear but oxidative stress is believed to contribute to RV dysfunction. Melatonin is a powerful antioxidant and is cardioprotective against ischemia-reperfusion injury and hypertension. Therefore, we hypothesized that a chronic treatment with melatonin, given as a curative or preventive therapy, may confer cardiovascular benefits in PH. PH was induced in Long Evans rats (n ≥ 6 per group), with a single subcutaneous injection of monocrotaline (MCT, 80 mg/kg). Melatonin was given daily in the drinking water, with the treatment starting either on the day of the injection of MCT (dose testing: melatonin 75 ng/L and 6 mg/kg), 14 days after the injection of MCT (curative treatment: 6 mg/kg), or 5 days before the injection (preventive treatment: 6 mg/kg). The development of PH was assessed by measuring RV hypertrophy, RV function, cardiac interstitial fibrosis, and plasma oxidative stress. Compared with controls, MCT-treated rats displayed RV hypertrophy and dysfunction, increased interstitial fibrosis, and elevated plasma oxidative stress. A chronic melatonin treatment (75 ng/L or 6 mg/kg) reduced RV hypertrophy, improved RV function and reduced plasma oxidative stress. Curative and preventive treatment improved RV functional and plasma oxidative stress parameters and reduced cardiac interstitial fibrosis. Our data demonstrate that melatonin confers cardioprotection in this model of PH. As melatonin is an inexpensive and safe drug, we propose that clinical investigation of the effects of melatonin on RV function in patients with PH should be considered.
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MESH Headings
- Animals
- Antioxidants/therapeutic use
- Hypertension, Pulmonary/chemically induced
- Hypertension, Pulmonary/drug therapy
- Hypertension, Pulmonary/prevention & control
- Hypertrophy, Right Ventricular/chemically induced
- Hypertrophy, Right Ventricular/drug therapy
- Hypertrophy, Right Ventricular/prevention & control
- Male
- Melatonin/therapeutic use
- Monocrotaline/toxicity
- Rats
- Rats, Long-Evans
- Ventricular Dysfunction, Right/chemically induced
- Ventricular Dysfunction, Right/drug therapy
- Ventricular Dysfunction, Right/prevention & control
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Affiliation(s)
- Gerald Maarman
- Hatter Institute for Cardiovascular Research in Africa and Inter University MRC Cape Heart Group, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Dee Blackhurst
- Division of Chemical Pathology, Department of Clinical Laboratory Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Friedrich Thienemann
- Clinical Infectious Diseases Research Initiative, Institute of Infectious Diseases and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | | | | | - Neil Davies
- Cardiovascular Research Unit, Chris Barnard Division of Cardiothoracic Surgery, University of Cape Town, Faculty of Health Sciences, Cape Town, South Africa
| | - Karen Sliwa
- Hatter Institute for Cardiovascular Research in Africa and Inter University MRC Cape Heart Group, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Sandrine Lecour
- Hatter Institute for Cardiovascular Research in Africa and Inter University MRC Cape Heart Group, Department of Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
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