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Ma J, Pang X, Wang T, Ning M, Liang Y, Li X, Tian X, Mo Y, Laher I, Li S. Acute aerobic exercise regulation of myocardial calcium homeostasis involves CASQ1, CASQ2, and TRDN. J Appl Physiol (1985) 2023; 135:707-716. [PMID: 37589058 DOI: 10.1152/japplphysiol.00299.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/20/2023] [Accepted: 08/10/2023] [Indexed: 08/18/2023] Open
Abstract
Exercise maintains cardiac calcium homeostasis and promotes cardiovascular health. This study explored temporal changes of calcium-related myocardial transcriptome changes during the recovery phase following a single bout of moderate-intensity aerobic exercise. Healthy male Sprague-Dawley rats were anesthetized with sodium pentobarbital after moderate-intensity aerobic exercise at four time points (0, 12, 24, and 72 h postexercise). The hearts were removed and RNA-seq and bioinformatics analyses were used to examine temporal transcriptional changes in the myocardium. Casq1, Casq2, and Trdn were identified as key genes in the regulation of calcium homeostasis during myocardial recovery. The highest expression of Casq1, Casq2, and Trdn genes and the proteins they encode occurred 24 h after exercise. An in vitro calcium overload heart model using the Langendorff heart perfusion method was used to examine myocardial calcium buffering capacity. Calcium overload caused the least changes in left ventricular developed pressure, infarct area, Lactate dehydrogenase release, and extent of morphological damage to myocardial cells, with the highest protein expressions of CASQ1, CASQ2, and TRDN at 24 h after acute exercise. This study indicates that maximal myocardial Ca2+ buffering capacity occurs 24 h postexercise in rats. Our study provides insights into exercise-mediated improvements in cardiovascular function and exercise preconditioning.NEW & NOTEWORTHY Acute aerobic exercise upregulates myocardial Casq1, Casq2, and Trdn genes and the proteins they encode in rats. Higher protein levels of CASQ1, CASQ2, and TRDN conferred an improved ability of the myocardium to resist calcium overload. Furthermore, 24 h postexercise is the time point with optimal myocardial calcium buffer capacity.
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Affiliation(s)
- Jiacheng Ma
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Xiaoli Pang
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Tutu Wang
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Miaomiao Ning
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Yu Liang
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Xiaole Li
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Xinyu Tian
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Yurou Mo
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
| | - Ismail Laher
- Department of Anesthesiology, Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Shunchang Li
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, People's Republic of China
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Cordeiro JP, Silva VLD, Campos DH, Cicogna AC, Leopoldo AS, Lima-Leopoldo AP. Isolated obesity resistance condition or associated with aerobic exercise training does not promote cardiac impairment. ACTA ACUST UNITED AC 2021; 54:e10669. [PMID: 34287576 PMCID: PMC8289349 DOI: 10.1590/1414-431x2020e10669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 05/28/2021] [Indexed: 11/30/2022]
Abstract
Mechanisms involved in cardiac function and calcium (Ca2+) handling in obese-resistant (OR) rats are still poorly determined. We tested the hypothesis that unsaturated high-fat diet (HFD) promotes myocardial dysfunction in OR rats, which it is related to Ca2+ handling. In addition, we questioned whether exercise training (ET) becomes a therapeutic strategy. Male Wistar rats (n=80) were randomized to standard or HFD diets for 20 weeks. The rats were redistributed for the absence or presence of ET and OR: control (C; n=12), control + ET (CET; n=14), obese-resistant (OR; n=9), and obese-resistant + ET (ORET; n=10). Trained rats were subjected to aerobic training protocol with progressive intensity (55-70% of the maximum running speed) and duration (15 to 60 min/day) for 12 weeks. Nutritional, metabolic, and cardiovascular parameters were determined. Cardiac function and Ca2+ handling tests were performed in isolated left ventricle (LV) papillary muscle. OR rats showed cardiac atrophy with reduced collagen levels, but there was myocardial dysfunction. ET was efficient in improving most parameters of body composition. However, the mechanical properties and Ca2+ handling from isolated papillary muscle were similar among groups. Aerobic ET does not promote morphological and cardiac functional adaptation under the condition of OR.
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Affiliation(s)
- J P Cordeiro
- Programa de Pós-Graduação em Educação Física, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brasil
| | - V L da Silva
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - D H Campos
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - A C Cicogna
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - A S Leopoldo
- Programa de Pós-Graduação em Educação Física, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brasil
| | - A P Lima-Leopoldo
- Programa de Pós-Graduação em Educação Física, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brasil
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Mazeto I, Okoshi K, Silveira C, Sant'Ana P, da Silva V, Mota G, de Souza S, Vileigas D, Padovani C, Cicogna A. Calcium homeostasis behavior and cardiac function on left ventricular remodeling by pressure overload. Braz J Med Biol Res 2021; 54:e10138. [PMID: 33624728 PMCID: PMC7894392 DOI: 10.1590/1414-431x202010138] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/12/2020] [Indexed: 11/22/2022] Open
Abstract
Sarcoplasmic reticulum Ca2+-ATPase (SERCA2a) and sarcolemmal Na+/Ca2+ exchanger (NCX1) structures are involved in heart cell Ca2+ homeostasis. Previous studies have shown discrepancies in their function and expression in heart failure. The goal of this study was to evaluate heart function and hypertrophied muscle Ca2+-handling protein behavior under pressure overload. Twenty male Wistar rats were divided into two groups: Aortic stenosis (AoS), induced by a clip placed at the beginning of the aorta, and Control (Sham). After 18 weeks, heart function and structure were evaluated by echocardiogram. Myocardial function was analyzed by isolated papillary muscle (IPM) at basal condition and Ca2+ protein functions were evaluated after post-pause contraction and blockage with cyclopiazonic acid in IPM. Ca2+-handling protein expression was studied by western blot (WB). Echocardiogram showed that AoS caused concentric hypertrophy with enhanced ejection fraction and diastolic dysfunction inferred by dilated left atrium and increased relative wall thickness. IPM study showed developed tension was the same in both groups. AoS showed increased stiffness revealed by enhanced resting tension, and changes in Ca2+ homeostasis shown by calcium elevation and SERCA2a blockage maneuvers. WB revealed decreased NCX1, SERCA2a, and phosphorylated phospholambam (PLB) on serine-16 in AoS. AoS had left ventricular hypertrophy and diastolic dysfunction compared to Sham; this could be related to our findings regarding calcium homeostasis behavior: deficit in NCX1, SERCA2a, and phosphorylated PLB on serine-16.
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Affiliation(s)
- I.F.S. Mazeto
- Departamento de Infectologia, Dermatologia, Diagnóstico por Imagem e Radioterapia, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - K. Okoshi
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - C.F.S.M.P. Silveira
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - P.G. Sant'Ana
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - V.L. da Silva
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - G.A.F. Mota
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - S.L.B. de Souza
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - D.F. Vileigas
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - C.R. Padovani
- Departamento de Bioestatística, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - A.C. Cicogna
- Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brasil
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Abreu GV, Claudio ERG, Aguiar AF, Giordani MA, de Queiroz EAIF, Lima-Leopoldo AP, Leopoldo AS, Sugizaki MM. Digoxin Combined with Aerobic Interval Training Improved Cardiomyocyte Contractility. Int J Sports Med 2020; 42:694-702. [PMID: 33321522 DOI: 10.1055/a-1300-2583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Digoxin is a cardiotonic that increases the cardiac output without causing deleterious effects on heart, as well as improves the left ventricular performance during physical exercise. We tested whether the association between chronic digoxin administration and aerobic interval training (AIT) promotes beneficial cardiovascular adaptations by improving the myocardial contractility and calcium (Ca2+) handling. Male Wistar rats were randomly assigned to sedentary control (C), interval training (T), sedentary digoxin (DIGO) and T associated to digoxin (TDIGO). AIT was performed on a treadmill (1h/day, 5 days/week) for 60 days, consisting of successive 8-min periods at 80% and 20% of VO2máx for 2 min. Digoxin was administered by orogastric gavage for 60 days. Left ventricle samples were collected to analysis of Ca2+ handling proteins; contractility and Ca2+ handling were performed on isolated cardiomyocytes. TDIGO group had a greater elevation in fractional shortening (44%) than DIGO, suggesting a cardiomyocyte contractile improvement. In addition, T or TDIGO groups showed no change in cardiomyocytes properties after Fura2-acetoxymethyl ester, as well as in sarcoplasmic reticulum Ca2+-ATPase (SERCA2a), phospholamban and calcineurin expressions. The main findings indicate that association of digoxin and aerobic interval training improved the cardiomyocyte contractile function, but these effects seem to be unrelated to Ca2+ handling.
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Affiliation(s)
- Gabriel Vasconcelos Abreu
- Laboratory of Metabolic and Cardiovascular Diseases, Health Education and Research Center (NUPADS), Institute of Health Science, Federal University of Mato Grosso, Sinop, Brazil
| | - Erick Roberto Gonçalves Claudio
- Center of Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Andreo Fernando Aguiar
- North University of Paraná (UNOPAR), Centre of Research in Biological and Healthy Sciences, Londrina, Paraná, Brazil
| | - Morenna Alana Giordani
- Laboratory of Metabolic and Cardiovascular Diseases, Health Education and Research Center (NUPADS), Institute of Health Science, Federal University of Mato Grosso, Sinop, Brazil
| | | | - Ana Paula Lima-Leopoldo
- Center of Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - André Soares Leopoldo
- Center of Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Mário Mateus Sugizaki
- Laboratory of Metabolic and Cardiovascular Diseases, Health Education and Research Center (NUPADS), Institute of Health Science, Federal University of Mato Grosso, Sinop, Brazil
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Melo AB, Damiani APL, Coelho PM, de Assis ALEM, Nogueira BV, Guimarães Ferreira L, Leite RD, Ribeiro Júnior RF, Lima-Leopoldo AP, Leopoldo AS. Resistance training promotes reduction in Visceral Adiposity without improvements in Cardiomyocyte Contractility and Calcium handling in Obese Rats. Int J Med Sci 2020; 17:1819-1832. [PMID: 32714085 PMCID: PMC7378665 DOI: 10.7150/ijms.42612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 03/23/2020] [Indexed: 11/05/2022] Open
Abstract
Resistance training (RT) improves the cardiomyocyte calcium (Ca2+) cycling during excitation-contraction coupling. However, the role of RT in cardiomyocyte contractile function associated with Ca2+ handling in obesity is unclear. Wistar rats were distributed into four groups: control, sedentary obese, control plus RT, and obesity plus RT. The 10-wk RT protocol was used (4-5 vertical ladder climbs, 60-second interval, 3× a week, 50-100% of maximum load). Metabolic, hormonal, cardiovascular and biochemical parameters were determined. Reduced leptin levels, epididymal, retroperitoneal and visceral fat pads, lower body fat, and adiposity index were observed in RT. Obesity promoted elevation of collagen, but RT did not promote modifications of LV collagen in ObRT. RT induced elevation in maximum rates of contraction and relaxation, and reduction of time to 50% relaxation. ObRT group did not present improvement in the cardiomyocyte contractile function in comparison to Ob group. Reduced cardiac PLB serine16 phosphorylation (pPLB Ser16) and pPLB Ser16/PLB ratio with no alterations in sarcoplasmic reticulum Ca2+ ATPase (SERCA2a) and phospholamban (PLB) expression were observed in Ob groups. Resistance training improved body composition reduced fat pads and plasma leptin levels but did not promote positive alterations in cardiomyocyte contractile function, Ca2+ handling and phospholamban phosphorylation.
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Affiliation(s)
- Alexandre Barroso Melo
- Centre for Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Andressa Prata Leite Damiani
- Centre for Health Sciences, Department of Nutrition, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Priscila Murucci Coelho
- Centre for Health Sciences, Department of Nutrition, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | | | - Breno Valentim Nogueira
- Center of Health Sciences, Department of Morphology, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Lucas Guimarães Ferreira
- Centre for Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Richard Diego Leite
- Centre for Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Rogério Faustino Ribeiro Júnior
- Center of Health Sciences, Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Ana Paula Lima-Leopoldo
- Centre for Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - André Soares Leopoldo
- Centre for Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
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Peoples JN, Taylor DG, Katchman AN, Ebert SN. Intact calcium signaling in adrenergic-deficient embryonic mouse hearts. Biochem Biophys Res Commun 2018; 495:2547-2552. [PMID: 29288665 DOI: 10.1016/j.bbrc.2017.12.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 12/26/2017] [Indexed: 11/30/2022]
Abstract
Mouse embryos that lack the ability to produce the adrenergic hormones, norepinephrine (NE) and epinephrine (EPI), due to disruption of the dopamine beta-hydroxylase (Dbh-/-) gene inevitably perish from heart failure during mid-gestation. Since adrenergic stimulation is well-known to enhance calcium signaling in developing as well as adult myocardium, and impairments in calcium signaling are typically associated with heart failure, we hypothesized that adrenergic-deficient embryonic hearts would display deficiencies in cardiac calcium signaling relative to adrenergic-competent controls at a developmental stage immediately preceding the onset of heart failure, which first appears beginning or shortly after mouse embryonic day 10.5 (E10.5). To test this hypothesis, we used ratiometric fluorescent calcium imaging techniques to measure cytosolic calcium transients, [Ca2+]i in isolated E10.5 mouse hearts. Our results show that spontaneous [Ca2+]i oscillations were intact and robustly responded to a variety of stimuli including extracellular calcium (5 mM), caffeine (5 mM), and NE (100 nM) in a manner that was indistinguishable from controls. Further, we show similar patterns of distribution (via immunofluorescent histochemical staining) and activity (via patch-clamp recording techniques) for the major voltage-gated plasma membrane calcium channel responsible for the L-type calcium current, ICa,L, in adrenergic-deficient and control embryonic cardiac cells. These results demonstrate that despite the absence of vital adrenergic hormones that consistently leads to embryonic lethality in vivo, intracellular and extracellular calcium signaling remain essentially intact and functional in embryonic mouse hearts through E10.5. These findings suggest that adrenergic stimulation is not required for the development of intracellular calcium oscillations or extracellular calcium signaling through ICa,L and that aberrant calcium signaling does not likely contribute to the onset of heart failure in this model.
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Affiliation(s)
- Jessica N Peoples
- Burnett School of Biomedical Sciences, Division of Metabolic and Cardiovascular Sciences, College of Medicine, University of Central Florida, 6900 Lake Nona Blvd, Orlando, FL 32827, United States
| | - David G Taylor
- Burnett School of Biomedical Sciences, Division of Metabolic and Cardiovascular Sciences, College of Medicine, University of Central Florida, 6900 Lake Nona Blvd, Orlando, FL 32827, United States
| | - Alexander N Katchman
- Department of Pharmacology, Georgetown University Medical Center, 3900 Reservoir Rd, NW, Washington, DC 20007, United States
| | - Steven N Ebert
- Burnett School of Biomedical Sciences, Division of Metabolic and Cardiovascular Sciences, College of Medicine, University of Central Florida, 6900 Lake Nona Blvd, Orlando, FL 32827, United States.
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da Silva VL, Lima-Leopoldo AP, Ferron AJT, Cordeiro JP, Freire PP, de Campos DHS, Padovani CR, Sugizaki MM, Cicogna AC, Leopoldo AS. Moderate exercise training does not prevent the reduction in myocardial L-type Ca 2+ channels protein expression at obese rats. Physiol Rep 2017; 5:5/19/e13466. [PMID: 29038363 PMCID: PMC5641941 DOI: 10.14814/phy2.13466] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 09/01/2017] [Accepted: 09/04/2017] [Indexed: 01/08/2023] Open
Abstract
Authors have showed that obesity implicates cardiac dysfunction associated with myocardial L-type calcium channels (LTCCs) activity impairments, as well as moderate exercise training (MET) seems to be an important therapeutic tool. We tested the hypothesis that MET promotes improvements on LTCCS activity and protein expression at obesity induced by unsaturated high-fat diets, which could represent a protective effects against development of cardiovascular damage. Male Wistar rats were randomized in control (C, n = 40), which received a standard diet and obese (Ob; n = 40), which received high-fat diet. After 20 weeks, the animals were assigned at four groups: control (C; n = 12); control submitted to exercise training (ET; n = 14); obese (Ob; n = 10); and obese submitted to exercise training (ObET; n = 11). ET (5 days/week during 12 weeks) began in the 21th week and consisted of treadmill running that was progressively increased to reach 60 min. Final body weight (FBW), body fat (BF), adiposity index (AI), comorbidities, and hormones were evaluated. Cardiac remodeling was assessed by morphological and isolated papillary muscles function. LTCCs activity was determined using specific blocker, while protein expression of LTCCs was evaluated by Western blot. Unsaturated high-fat diet promoted obesity during all experimental protocol. MET controlled obesity process by decreasing of FBW, BF, and AI. Obesity implicated to LTCCs protein expression reduction and MET was not effective to prevent this condition. ET was efficient to promote several improvements to body composition and metabolic parameters; however, it was not able to prevent or reverse the downregulation of LTCCs protein expression at obese rats.
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Affiliation(s)
- Vitor L da Silva
- Department of Internal Medicine, São Paulo State University, Botucatu, Brazil
| | - Ana P Lima-Leopoldo
- Center of Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Brazil
| | - Artur J T Ferron
- Department of Internal Medicine, São Paulo State University, Botucatu, Brazil
| | - Jóctan P Cordeiro
- Center of Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Brazil
| | - Paula P Freire
- Department of Morphology, São Paulo State University, Botucatu, Brazil
| | - Dijon H S de Campos
- Department of Internal Medicine, São Paulo State University, Botucatu, Brazil
| | - Carlos R Padovani
- Department of Biostatistics, Institute of Biosciences, São Paulo State University, Botucatu, Brazil
| | - Mário M Sugizaki
- Institute of Health Science, Federal University of Mato Grosso, Sinop, Brazil
| | - Antonio C Cicogna
- Department of Internal Medicine, São Paulo State University, Botucatu, Brazil
| | - André S Leopoldo
- Center of Physical Education and Sports, Department of Sports, Federal University of Espírito Santo, Vitória, Brazil
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Guizoni DM, Oliveira-Junior SA, Noor SLR, Pagan LU, Martinez PF, Lima ARR, Gomes MJ, Damatto RL, Cezar MDM, Bonomo C, Zornoff LAM, Okoshi K, Okoshi MP. Effects of late exercise on cardiac remodeling and myocardial calcium handling proteins in rats with moderate and large size myocardial infarction. Int J Cardiol 2016; 221:406-12. [PMID: 27404715 DOI: 10.1016/j.ijcard.2016.07.072] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 07/04/2016] [Indexed: 01/10/2023]
Abstract
BACKGROUND Physical exercise attenuates myocardial infarction (MI)-induced cardiac remodeling. However, it is unsettled whether late exercise modulates post-infarction cardiac remodeling differentially according to infarct size. We investigated the effects of exercise started at late stage heart failure on cardiac remodeling in rats with moderate and large sized MI. METHODS Three months after MI, rats were assigned into sedentary and exercise groups. Exercise rats underwent treadmill for three months. After assessing infarct size by histological analysis, rats were subdivided into four groups: moderate MI sedentary (Mod MI-Sed; n=7), Mod MI exercised (Mod MI-Ex; n=7), Large MI-Sed (n=11), and Large MI-Ex (n=10). RESULTS Before exercise, MI-induced cardiac changes were demonstrated by comparing results to a Sham group; alterations were more intense in rats with large than moderate MI size. Systolic function, evaluated by echocardiogram using the variation in LV fractional area change between after and before exercise, was improved in exercise than sedentary groups. Calsequestrin expression increased in exercised compared to sedentary groups. L-type calcium channel was higher in Mod MI-Ex than Mod MI-Sed. SERCA2a, phospholamban, and Na(+)/Ca(2+) exchanger expression did not differ between groups. CONCLUSION Late exercise improves systolic function and modulates intracellular calcium signaling proteins in rats with moderate and large MI.
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Affiliation(s)
- Daniele M Guizoni
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | | | - Sefora L R Noor
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Luana U Pagan
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Paula F Martinez
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil; School of Physical Therapy, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Aline R R Lima
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Mariana J Gomes
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Ricardo L Damatto
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Marcelo D M Cezar
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Camila Bonomo
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Leonardo A M Zornoff
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Katashi Okoshi
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil
| | - Marina P Okoshi
- Internal Medicine Department, Botucatu Medical School, Sao Paulo State University, UNESP, Botucatu, Brazil.
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9
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Shi L, Zhang Y, Liu Y, Gu B, Cao R, Chen Y, Zhao T. Exercise Prevents Upregulation of RyRs-BKCa Coupling in Cerebral Arterial Smooth Muscle Cells From Spontaneously Hypertensive Rats. Arterioscler Thromb Vasc Biol 2016; 36:1607-17. [PMID: 27339460 DOI: 10.1161/atvbaha.116.307745] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 06/13/2016] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Regular exercise is an effective nonpharmacological means of preventing and controlling hypertension. However, the molecular mechanisms underlying its effects remain undetermined. The hypothesis that hypertension increases the functional coupling of large-conductance Ca(2+)-activated K(+) (BKCa) channels with ryanodine receptors in spontaneously hypertensive rats (SHR) as a compensatory response to an increase in intracellular Ca(2+) concentration in cerebral artery smooth muscle cells was assessed here. It was further hypothesized that exercise training would prevent this increase in functional coupling. APPROACH AND RESULTS SHR and Wistar-Kyoto (WKY) rats were randomly assigned to sedentary groups (SHR-SED and WKY-SED) and exercise training groups (SHR-EX and WKY-EX). Cerebral artery smooth muscle cells displayed spontaneous transient outward currents at membrane potentials more positive than -40 mV. The amplitude of spontaneous transient outward currents together with the spontaneous Ca(2+) sparks in isolated cerebral artery smooth muscle cells was significantly higher in SHR-SED than in WKY-SED. Moreover, hypertension displayed increased whole-cell BKCa, voltage-gated Ca(2+) channel, but decreased KV currents in cerebral artery smooth muscle cells. In SHRs, the activity of the single BKCa channel increased markedly, and the protein expression of BKCa (β1, but not α-subunit) also increased, but KV1.2 decreased significantly. Exercise training ameliorated all of these functional and molecular alterations in hypertensive rats. CONCLUSIONS These data indicate that hypertension leads to enhanced functional coupling of ryanodine receptors-BKCa to buffer pressure-induced constriction of cerebral arteries, which attributes not only to an upregulation of BKCa β1-subunit function but also to an increase of Ca(2+) release from ryanodine receptors. However, regular aerobic exercise efficiently prevents augmented coupling and so alleviates the pathological compensation and restores cerebral arterial function.
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Affiliation(s)
- Lijun Shi
- From the Department of Exercise Physiology, Beijing Sport University, Beijing, P.R. China.
| | - Yanyan Zhang
- From the Department of Exercise Physiology, Beijing Sport University, Beijing, P.R. China
| | - Yujia Liu
- From the Department of Exercise Physiology, Beijing Sport University, Beijing, P.R. China
| | - Boya Gu
- From the Department of Exercise Physiology, Beijing Sport University, Beijing, P.R. China
| | - Run Cao
- From the Department of Exercise Physiology, Beijing Sport University, Beijing, P.R. China
| | - Yu Chen
- From the Department of Exercise Physiology, Beijing Sport University, Beijing, P.R. China
| | - Tengteng Zhao
- From the Department of Exercise Physiology, Beijing Sport University, Beijing, P.R. China
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10
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Araujo CM, Hermidorff MM, Amancio GDCS, Lemos DDS, Silva ME, de Assis LVM, Isoldi MC. Rapid effects of aldosterone in primary cultures of cardiomyocytes - do they suggest the existence of a membrane-bound receptor? J Recept Signal Transduct Res 2015; 36:435-44. [PMID: 27305962 DOI: 10.3109/10799893.2015.1122042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Aldosterone acts on its target tissue through a classical mechanism or through the rapid pathway through a putative membrane-bound receptor. Our goal here was to better understand the molecular and biochemical rapid mechanisms responsible for aldosterone-induced cardiomyocyte hypertrophy. We have evaluated the hypertrophic process through the levels of ANP, which was confirmed by the analysis of the superficial area of cardiomyocytes. Aldosterone increased the levels of ANP and the cellular area of the cardiomyocytes; spironolactone reduced the aldosterone-increased ANP level and cellular area of cardiomyocytes. Aldosterone or spironolactone alone did not increase the level of cyclic 3',5'-adenosine monophosphate (cAMP), but aldosterone plus spironolactone led to increased cAMP level; the treatment with aldosterone + spironolactone + BAPTA-AM reduced the levels of cAMP. These data suggest that aldosterone-induced cAMP increase is independent of mineralocorticoid receptor (MR) and dependent on Ca(2+). Next, we have evaluated the role of A-kinase anchor proteins (AKAP) in the aldosterone-induced hypertrophic response. We have found that St-Ht31 (AKAP inhibitor) reduced the increased level of ANP which was induced by aldosterone; in addition, we have found an increase on protein kinase C (PKC) and extracellular signal-regulated kinase 5 (ERK5) activity when cells were treated with aldosterone alone, spironolactone alone and with a combination of both. Our data suggest that PKC could be responsible for ERK5 aldosterone-induced phosphorylation. Our study suggests that the aldosterone through its rapid effects promotes a hypertrophic response in cardiomyocytes that is controlled by an AKAP, being dependent on ERK5 and PKC, but not on cAMP/cAMP-dependent protein kinase signaling pathways. Lastly, we provide evidence that the targeting of AKAPs could be relevant in patients with aldosterone-induced cardiac hypertrophy and heart failure.
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Affiliation(s)
- Carolina Morais Araujo
- a Laboratory of Hypertension , Research Center in Biological Science, Institute of Exact and Biological Sciences, Federal University of Ouro Preto , Ouro Preto , Brazil
| | - Milla Marques Hermidorff
- a Laboratory of Hypertension , Research Center in Biological Science, Institute of Exact and Biological Sciences, Federal University of Ouro Preto , Ouro Preto , Brazil
| | - Gabriela de Cassia Sousa Amancio
- a Laboratory of Hypertension , Research Center in Biological Science, Institute of Exact and Biological Sciences, Federal University of Ouro Preto , Ouro Preto , Brazil
| | - Denise da Silveira Lemos
- b Laboratory of Immunoparasitology , Center for Research in Biological Sciences, Institute of Biological and Exact Sciences, Federal University of Ouro Preto , Ouro Preto , Brazil
| | - Marcelo Estáquio Silva
- c Laboratory of Experimental Nutrition , School of Nutrition, Federal University of Ouro Preto , Ouro Preto , Brazil , and
| | | | - Mauro César Isoldi
- a Laboratory of Hypertension , Research Center in Biological Science, Institute of Exact and Biological Sciences, Federal University of Ouro Preto , Ouro Preto , Brazil
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11
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Chung HS, Murray CI, Venkatraman V, Crowgey EL, Rainer PP, Cole RN, Bomgarden RD, Rogers JC, Balkan W, Hare JM, Kass DA, Van Eyk JE. Dual Labeling Biotin Switch Assay to Reduce Bias Derived From Different Cysteine Subpopulations: A Method to Maximize S-Nitrosylation Detection. Circ Res 2015; 117:846-57. [PMID: 26338901 DOI: 10.1161/circresaha.115.307336] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/03/2015] [Indexed: 01/09/2023]
Abstract
RATIONALE S-nitrosylation (SNO), an oxidative post-translational modification of cysteine residues, responds to changes in the cardiac redox-environment. Classic biotin-switch assay and its derivatives are the most common methods used for detecting SNO. In this approach, the labile SNO group is selectively replaced with a single stable tag. To date, a variety of thiol-reactive tags have been introduced. However, these methods have not produced a consistent data set, which suggests an incomplete capture by a single tag and potentially the presence of different cysteine subpopulations. OBJECTIVE To investigate potential labeling bias in the existing methods with a single tag to detect SNO, explore if there are distinct cysteine subpopulations, and then, develop a strategy to maximize the coverage of SNO proteome. METHODS AND RESULTS We obtained SNO-modified cysteine data sets for wild-type and S-nitrosoglutathione reductase knockout mouse hearts (S-nitrosoglutathione reductase is a negative regulator of S-nitrosoglutathione production) and nitric oxide-induced human embryonic kidney cell using 2 labeling reagents: the cysteine-reactive pyridyldithiol and iodoacetyl based tandem mass tags. Comparison revealed that <30% of the SNO-modified residues were detected by both tags, whereas the remaining SNO sites were only labeled by 1 reagent. Characterization of the 2 distinct subpopulations of SNO residues indicated that pyridyldithiol reagent preferentially labels cysteine residues that are more basic and hydrophobic. On the basis of this observation, we proposed a parallel dual-labeling strategy followed by an optimized proteomics workflow. This enabled the profiling of 493 SNO sites in S-nitrosoglutathione reductase knockout hearts. CONCLUSIONS Using a protocol comprising 2 tags for dual-labeling maximizes overall detection of SNO by reducing the previously unrecognized labeling bias derived from different cysteine subpopulations.
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Affiliation(s)
- Heaseung Sophia Chung
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Christopher I Murray
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Vidya Venkatraman
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Erin L Crowgey
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Peter P Rainer
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Robert N Cole
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Ryan D Bomgarden
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - John C Rogers
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Wayne Balkan
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Joshua M Hare
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - David A Kass
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.)
| | - Jennifer E Van Eyk
- From the Department of Biological Chemistry (H.S.C., C.I.M., R.N.C., J.E.V.E.), Division of Cardiology, Department of Medicine (V.V., P.P.R., D.A.K., J.E.V.E.), The Johns Hopkins NHLBI Proteomics Innovation Center on Heart Failure (H.S.C., V.V., D.A.K., J.E.V.E.), Department of Medicine, Mass Spectrometry and Proteomic Core Facility (R.N.C.), Johns Hopkins University School of Medicine, Baltimore, MD; Thermo Fisher Scientific, Rockford, IL (R.D.B., J.C.R.); Advanced Clinical Biosystems Research Institute, Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (V.V., E.L.C., J.E.V.E.); Department of Medicine, Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, FL (W.B., J.M.H.); Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada (C.I.M.); and Division of Cardiology, Medical University of Graz, Austria (P.P.R.).
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12
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Locatelli J, Monteiro de Assis LV, Morais Araújo C, Carvalho Alzamora A, Wanderson Geraldo de Lima, Campagnole-Santos MJ, Augusto dos Santos R, Isoldi MC. Swimming training promotes cardiac remodeling and alters the expression of mRNA and protein levels involved in calcium handling in hypertensive rats. Life Sci 2015; 117:67-74. [PMID: 25283082 DOI: 10.1016/j.lfs.2014.09.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 09/09/2014] [Accepted: 09/20/2014] [Indexed: 11/26/2022]
Abstract
AIM The aim of this study was to identify the effects of swimming training on the mRNA expression and protein levels of the calcium handling proteins in the hearts of renovascular hypertensive rats submitted to swimming protocol during 6 weeks. MAIN METHODS Fischer rats with renovascular hypertension 2-kidney 1-clip (2K1C) and SHAM groups were divided among sedentary and exercised groups. The exercise protocol lasted for 6 weeks (1 h/day, 5×/week), and the mean arterial pressure, cardiomyocytes hypertrophy parameters, mRNA expression and protein levels of some calcium handling proteins in the left ventricle were evaluated. KEY FINDINGS Swimming training was able to reduce the levels of mean arterial pressure in the hypertensive group compared to 2K1C SED, and to promote cardiac hypertrophy in SHAM EX and 2K1C EX groups in comparison to the respective control groups. The mRNA levels of B-type natriuretic peptide were reduced in the 2K1C EX when compared to 2K1C SED. The mRNA and protein levels of the sarcoplasmic reticulum Ca2 +-ATPase increased after the swimming training in SHAM and 2K1C groups. The mRNA and protein levels of phospholamban, displayed an increase in their levels in the exercised SHAM and in hypertensive rats in comparison to their respective controls; while mRNA levels of Na+/Ca2 + exchanger was reduced in the left ventricle comparing to the sedentary hypertensive rats. SIGNIFICANCE Taken altogether, we provide evidence that the aerobic training may lead to cardiac remodeling, and modulate the calcium handling proteins expression in the heart of hypertensive rats.
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13
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Lane AD, Yan H, Ranadive SM, Kappus RM, Sun P, Cook MD, Harvey I, Woods J, Wilund K, Fernhall B. Sex differences in ventricular-vascular coupling following endurance training. Eur J Appl Physiol 2014; 114:2597-606. [PMID: 25142819 PMCID: PMC4228114 DOI: 10.1007/s00421-014-2981-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 08/11/2014] [Indexed: 01/20/2023]
Abstract
Introduction
Ventricular and vascular coupling is defined as the ratio of arterial elastance (Ea) to ventricular elastance (Elv) and describes the interaction between the heart and arterial system. There are sex differences in both arterial and ventricular function in response to both acute exercise and aerobic exercise training. Purpose To examine the effects of aerobic exercise training on elastances and the coupling ratio in young adult men and women. We hypothesized a reduction in the coupling ratio in both sexes due to a decrease in Ea that would be more pronounced in men and an increase in Elv that would be larger in women. Methods Fifty-three healthy, young adults completed the study. Central pulse wave velocity and heart volumes were measured before and after an 8-week aerobic training intervention. Elastances were calculated as Ea = end-systolic pressure/stroke volume and Elv = end-systolic pressure/end-systolic volume and indexed to body surface area. Results After the intervention, women augmented indexed and un-indexed Elv from 2.09 ± 0.61 to 2.52 ± 0.80 mmHg/ml, p < 0.05, and reduced the coupling ratio from 0.72 ± 18 to 0.62 ± 15, p < 0.05, while men maintained their pre-training ratio (from 0.66 ± 0.20 to 0.74 ± 0.21, p > 0.05). Women also reduced end-systolic pressure (from 91 ± 10 to 87 ± 10 mmHg), and both groups reduced central pulse wave velocity (from 6.0 ± 1.0 to 5.6 ± 0.6 m/s, p < 0.05). Conclusion We conclude that after 8 weeks of aerobic training, only women reduced their coupling ratio due to an increase in Elv. This suggests that aerobic exercise training elicits sex-dependent changes in the coupling ratio in young, healthy individuals.
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Affiliation(s)
- A D Lane
- Department of Health and Human Physiology, University of Iowa, Iowa City, IA, USA,
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14
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Ferreira R, Vitorino R, Padrão AI, Espadas G, Mancuso FM, Moreira-Gonçalves D, Castro-Sousa G, Henriques-Coelho T, Oliveira PA, Barros AS, Duarte JA, Sabidó E, Amado F. Lifelong exercise training modulates cardiac mitochondrial phosphoproteome in rats. J Proteome Res 2014; 13:2045-55. [PMID: 24467267 DOI: 10.1021/pr4011926] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Moderate physical activity has traditionally been associated with the improvement of cardiac function and, consequently, with the extension of life span. Mitochondria play a key role in the adaptation of heart muscle to exercise-related metabolic demands. In order to disclose the molecular mechanisms underlying the beneficial effect of lifelong physical activity in cardiac function, we performed label-free quantitative mass spectrometry-based proteomics of Sprague-Dawley rat heart mitochondrial proteome and phosphoproteome. Our data revealed that 54 weeks of moderate treadmill exercise modulates the abundance of proteins involved in the generation of precursor metabolites and cellular respiration, suggesting an increase in carbohydrate oxidation-based metabolism. Moreover, from the 1335 phosphopeptides identified in this study, 6 phosphosites were exclusively assigned to heart mitochondria from sedentary rats and 17 to exercised animals, corresponding to 6 and 16 proteins, respectively. Most proteins exhibiting significant alterations in specific phosphorylation sites were involved in metabolism. Analysis of the acquired data led to the identification of several kinases potentially modulated by exercise training, which were selected for further validation. Indeed, higher protein abundance levels of RAF and p38 in mitochondria were confirmed to be modulated by sustained exercise. Our work describes the plasticity of heart mitochondria in response to long exercise programs manifested by the reprogramming of phosphoproteome and provides evidence for the kinases involved in the regulation of metabolic pathways and mitochondrial maintenance.
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Affiliation(s)
- Rita Ferreira
- QOPNA, Department of Chemistry and ¶School of Health Sciences, University of Aveiro , Aveiro 3810-193, Portugal
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15
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Exercise perspective on common cardiac medications. Integr Med Res 2013; 2:49-55. [PMID: 28664054 PMCID: PMC5481675 DOI: 10.1016/j.imr.2013.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 04/15/2013] [Accepted: 04/15/2013] [Indexed: 12/20/2022] Open
Abstract
Medicinal tablets have been used for a long time to treat cardiovascular disease. However, mortality rate is steadily increasing partly because of the patients’ sedentary lifestyle and unhealthy diet. By contrast, exercise has been systematically shown to have multiple benefits. Regular exercise training can prevent various diseases in healthy individuals. Combined exercise and cardiac medications may lead to the improvement of heart disease. Numerous exercise training pathways still need further investigations. How exercise can prevent, treat, or attenuate diseases remains somewhat elusive. Thus, this review will discuss cardiac medications in parallel with the mechanism of action of exercise.
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