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do Val Lima PR, Ronconi KS, Morra EA, Rodrigues PL, Ávila RA, Merlo E, Graceli JB, Simões MR, Stefanon I, Ribeiro Júnior RF. Testosterone deficiency impairs cardiac interfibrillar mitochondrial function and myocardial contractility while inducing oxidative stress. Front Endocrinol (Lausanne) 2023; 14:1206387. [PMID: 37780627 PMCID: PMC10534000 DOI: 10.3389/fendo.2023.1206387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/06/2023] [Indexed: 10/03/2023] Open
Abstract
Introduction Clinical studies have shown that low levels of endogenous testosterone are associated with cardiovascular diseases. Considering the intimate connection between oxidative metabolism and myocardial contractility, we determined the effects of testosterone deficiency on the two spatially distinct subpopulations of cardiac mitochondria, subsarcolemmal (SSM) and interfibrillar (IFM). Methods We assessed cardiac function and cardiac mitochondria structure of SSM and IFM after 12 weeks of testosterone deficiency in male Wistar rats. Results and Discussion Results show that low testosterone reduced myocardial contractility. Orchidectomy increased total left ventricular mitochondrial protein in the SSM, but not in IFM. The membrane potential, size and internal complexity in the IFM after orchidectomy were higher compared to the SHAM group. However, the rate of oxidative phosphorylation with all substrates in the IFM after orchidectomy was lower compared to the SHAM group. Testosterone replacement restored these changes. In the testosterone-deficient SSM group, oxidative phosphorylation was decreased with palmitoyl-L-carnitine as substrate; however, the mitochondrial calcium retention capacity in IFM was increased. There was no difference in swelling of the mitochondria in either group. These changes in IFM were followed by a reduction in phosphorylated form of AMP-activated protein kinase (p-AMPK-α), peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) translocation to mitochondria and decreased mitochondrial transcription factor A (TFAM). Testosterone deficiency increased NADPH oxidase (NOX), angiotensin converting enzyme (ACE) protein expression and reduced mitochondrial antioxidant proteins such as manganese superoxide dismutase (Mn-SOD) and catalase in the IFM. Treatment with apocynin (1.5 mM in drinking water) normalized myocardial contractility and interfibrillar mitochondrial function in the testosterone depleted animals. In conclusion, our findings demonstrate that testosterone deficiency leads to reduced myocardial contractility and impaired cardiac interfibrillar mitochondrial function. Our data suggest the involvement of reactive oxygen species, with a possibility of NOX as an enzymatic source.
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Affiliation(s)
| | - Karoline Sousa Ronconi
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Elis Aguiar Morra
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Paula Lopes Rodrigues
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Renata Andrade Ávila
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Eduardo Merlo
- Department of Morphology, Federal University of Espírito Santo, Vitoria, ES, Brazil
| | - Jones B. Graceli
- Department of Morphology, Federal University of Espírito Santo, Vitoria, ES, Brazil
| | - Maylla Ronacher Simões
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Ivanita Stefanon
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
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Zhao R, Cai K, Yang JJ, Zhou Q, Cao W, Xiang J, Shen YH, Cheng LL, Zang WD, Lin Y, Yuan YY, Xu W, Tao H, Zhao SM, Zhao JY. Nuclear ATR lysine-tyrosylation protects against heart failure by activating DNA damage response. Cell Rep 2023; 42:112400. [PMID: 37071536 DOI: 10.1016/j.celrep.2023.112400] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 01/12/2023] [Accepted: 03/31/2023] [Indexed: 04/19/2023] Open
Abstract
Dysregulated amino acid increases the risk for heart failure (HF) via unclear mechanisms. Here, we find that increased plasma tyrosine and phenylalanine levels are associated with HF. Increasing tyrosine or phenylalanine by high-tyrosine or high-phenylalanine chow feeding exacerbates HF phenotypes in transverse aortic constriction and isoproterenol infusion mice models. Knocking down phenylalanine dehydrogenase abolishes the effect of phenylalanine, indicating that phenylalanine functions by converting to tyrosine. Mechanistically, tyrosyl-tRNA synthetase (YARS) binds to ataxia telangiectasia and Rad3-related gene (ATR), catalyzes lysine tyrosylation (K-Tyr) of ATR, and activates the DNA damage response (DDR) in the nucleus. Increased tyrosine inhibits the nuclear localization of YARS, inhibits the ATR-mediated DDR, accumulates DNA damage, and elevates cardiomyocyte apoptosis. Enhancing ATR K-Tyr by overexpressing YARS, restricting tyrosine, or supplementing tyrosinol, a structural analog of tyrosine, promotes YARS nuclear localization and alleviates HF in mice. Our findings implicate facilitating YARS nuclear translocation as a potential preventive and/or interfering measure against HF.
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Affiliation(s)
- Rui Zhao
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China; Institute for Developmental and Regenerative Cardiovascular Medicine, MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Ke Cai
- Institute for Developmental and Regenerative Cardiovascular Medicine, MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jing-Jing Yang
- Department of Cardiothoracic Surgery, Second Hospital of Anhui Medical University, and Cardiovascular Research Center, Anhui Medical University, Hefei 230601, China
| | - Qian Zhou
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China; Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Wei Cao
- Department of Cardiothoracic Surgery, Second Hospital of Anhui Medical University, and Cardiovascular Research Center, Anhui Medical University, Hefei 230601, China
| | - Jie Xiang
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China
| | - Yi-Hui Shen
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China
| | - Lei-Lei Cheng
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China
| | - Wei-Dong Zang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Yan Lin
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China
| | - Yi-Yuan Yuan
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China
| | - Wei Xu
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China
| | - Hui Tao
- Institute for Developmental and Regenerative Cardiovascular Medicine, MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; Department of Cardiothoracic Surgery, Second Hospital of Anhui Medical University, and Cardiovascular Research Center, Anhui Medical University, Hefei 230601, China.
| | - Shi-Min Zhao
- Obstetrics & Gynecology Hospital of Fudan University, Zhongshan Hospital of Fudan University, State Key Laboratory of Genetic Engineering, School of Life Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200438, China.
| | - Jian-Yuan Zhao
- Institute for Developmental and Regenerative Cardiovascular Medicine, MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; Department of Cardiothoracic Surgery, Second Hospital of Anhui Medical University, and Cardiovascular Research Center, Anhui Medical University, Hefei 230601, China; School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China.
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3
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Nogueira ME, Sousa Neto IV, Motta-Santos D, Cantuária APDC, Lima SMDF, Rezende TMB, Santana HADP, Petriz BA, Marqueti RDC, Almeida JA. High-protein diet associated with resistance training reduces cardiac TNF-α levels and up-regulates MMP-2 activity in rats. Arch Physiol Biochem 2022; 128:1630-1636. [PMID: 32686511 DOI: 10.1080/13813455.2020.1787456] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The consumption of high-protein diets (HPD) is associated with resistance training (RT) due to effects on metabolism. However, little is known about these effects on cardiac tissue. This study aimed to investigate effects of HPD and RT on cardiac biomarkers. 18 rats were divided into normo-protein (NPD), and HPD groups: NPD-Control, NPD-RT, HPD-Control, and HPD-RT. Interleukin-6 (IL-6), tumour necrosis factor alpha (TNF-a), nitric oxide (NO), activity of metalloproteinase-2 (MMP-2), and vascular factor (VEGF) were analysed. RT was effective in regulating body weight, increasing strength, and reducing food consumption (p < .05). HPD induces higher levels of interleukin 6 (p = .0169), and lowers NO (p < .0001). When associated with RT, the HPD decreases levels of tumour necrosis factor alpha, while enhances NO, and MMP activity (p < .05). The association of RT with HDP decreases inflammatory parameters and indicates an enhancement in the molecular parameters of cardiac tissue.
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Affiliation(s)
- Murilo Esteves Nogueira
- Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Ivo Vieira Sousa Neto
- Graduate Program of Sciences and Technology of Health, University of Brasilia, Distrito Federal, Brazil
| | - Daisy Motta-Santos
- Sports Science Postgraduate Program, Sports Department, EEFFTO, UFMG, Belo Horizonte, Brazil
| | - Ana Paula de Castro Cantuária
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Post graduation of Health Sciences, University of Brasilia, Distrito Federal, Brazil
| | - Stella Maris de Freitas Lima
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Dental course, Catholic University of Brasilia, Brasília, Brazil
| | - Taia Maria Berto Rezende
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Post graduation of Health Sciences, University of Brasilia, Distrito Federal, Brazil
- Dental course, Catholic University of Brasilia, Brasília, Brazil
| | - Hugo Alexandre de Paula Santana
- Research in Exercise and Nutrition in Health and Sports Performance - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Bernardo Assis Petriz
- Graduate Program in Genomics Science and Biotechnology, Catholic University of Brasilia, Brasília, Brazil
- Laboratory of Molecular Exercise Physiology, University Center - UDF, Brasília, Brazil
- Graduate Program in Health Promotion, University of Franca - UNIFRAN, Franca, Brazil
| | - Rita de Cássia Marqueti
- Graduate Program of Sciences and Technology of Health, University of Brasilia, Distrito Federal, Brazil
- Graduate Program of Rehabilitation Sciences, University of Brasilia, Distrito Federal, Brazil
| | - Jeeser Alves Almeida
- Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
- Research in Exercise and Nutrition in Health and Sports Performance - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
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4
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Nakamura M, Odanovic N, Nakada Y, Dohi S, Zhai P, Ivessa A, Yang Z, Abdellatif M, Sadoshima J. Dietary carbohydrates restriction inhibits the development of cardiac hypertrophy and heart failure. Cardiovasc Res 2021; 117:2365-2376. [PMID: 33070172 PMCID: PMC8861266 DOI: 10.1093/cvr/cvaa298] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 10/06/2020] [Indexed: 12/14/2022] Open
Abstract
AIMS A diet with modified components, such as a ketogenic low-carbohydrate (LC) diet, potentially extends longevity and healthspan. However, how an LC diet impacts on cardiac pathology during haemodynamic stress remains elusive. This study evaluated the effects of an LC diet high in either fat (Fat-LC) or protein (Pro-LC) in a mouse model of chronic hypertensive cardiac remodelling. METHODS AND RESULTS Wild-type mice were subjected to transverse aortic constriction, followed by feeding with the Fat-LC, the Pro-LC, or a high-carbohydrate control diet. After 4 weeks, echocardiographic, haemodynamic, histological, and biochemical analyses were performed. LC diet consumption after pressure overload inhibited the development of pathological hypertrophy and systolic dysfunction compared to the control diet. An anti-hypertrophic serine/threonine kinase, GSK-3β, was re-activated by both LC diets; however, the Fat-LC, but not the Pro-LC, diet exerted cardioprotection in GSK-3β cardiac-specific knockout mice. β-hydroxybutyrate, a major ketone body in mammals, was increased in the hearts of mice fed the Fat-LC, but not the Pro-LC, diet. In cardiomyocytes, ketone body supplementation inhibited phenylephrine-induced hypertrophy, in part by suppressing mTOR signalling. CONCLUSION Strict carbohydrate restriction suppresses pathological cardiac growth and heart failure after pressure overload through distinct anti-hypertrophic mechanisms elicited by supplemented macronutrients.
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MESH Headings
- 3-Hydroxybutyric Acid/metabolism
- Animal Feed
- Animals
- Cells, Cultured
- Diet, High-Protein Low-Carbohydrate
- Diet, Ketogenic
- Dietary Carbohydrates/administration & dosage
- Dietary Carbohydrates/metabolism
- Disease Models, Animal
- Glycogen Synthase Kinase 3 beta/genetics
- Glycogen Synthase Kinase 3 beta/metabolism
- Heart Failure/metabolism
- Heart Failure/physiopathology
- Heart Failure/prevention & control
- Hemodynamics
- Hypertrophy, Left Ventricular/metabolism
- Hypertrophy, Left Ventricular/physiopathology
- Hypertrophy, Left Ventricular/prevention & control
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Myocytes, Cardiac/metabolism
- Nutritive Value
- Rats, Wistar
- Signal Transduction
- TOR Serine-Threonine Kinases/metabolism
- Ventricular Function, Left
- Ventricular Remodeling
- Mice
- Rats
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Affiliation(s)
- Michinari Nakamura
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Natalija Odanovic
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Yasuki Nakada
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Satomi Dohi
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Peiyong Zhai
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Andreas Ivessa
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Zhi Yang
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Maha Abdellatif
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Ave, MSB G-609, Newark, NJ 07103, USA
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5
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P66Shc Deletion Ameliorates Oxidative Stress and Cardiac Dysfunction in Pressure Overload-Induced Heart Failure. J Card Fail 2019; 26:243-253. [PMID: 31536807 DOI: 10.1016/j.cardfail.2019.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 08/29/2019] [Accepted: 09/03/2019] [Indexed: 01/27/2023]
Abstract
OBJECTIVE p66Shc is a redox enzyme that plays an important role in the response of oxidative stress and the p53-dependent apoptosis. The expression level of p66Shc has a negative correlation with the resistance of oxidative stress in vivo and in vitro. We aim to demonstrate the function of p66Shc in pressure overload-induced heart failure. METHODS AND RESULTS The pressure overload-induced heart failure was induced in mice by transverse aortic constriction (TAC). Cardiac dysfunction was shown by transthoracic echocardiography. Western blot was used to check the protein levels of phosphodiesterase type 5 (PDE5) and ventricular oxidative stress markers. Superoxide dismutase (SOD) mimetic M40401 and PDE5 inhibitor sildenafil were used in the treatment of mice. The deletion of p66Shc attenuated cardiac dysfunction and oxidative stress in pressure overload-induced heart failure. p66Shc deletion also decreased the expression of ventricular oxidative stress markers and enhanced PKG signaling by promoting the expression of PDE5. M40401 and sildenafil attenuated the TAC-induced cardiac dysfunction and oxidative stress in p66Shc overexpression mice. CONCLUSIONS Our findings suggest that p66Shc participates in the regulation of cardiac dysfunction and oxidative stress in TAC-derived pressure overload-induced heart failure in mice, and SOD and PDE5 are molecules downstream of p66Shc in this regulatory process.
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6
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Morra EA, Rodrigues PL, Jesus ICGD, Do Val Lima PR, Ávila RA, Zanardo TÉC, Nogueira BV, Bers DM, Guatimosim S, Stefanon I, Ribeiro Júnior RF. Endurance training restores spatially distinct cardiac mitochondrial function and myocardial contractility in ovariectomized rats. Free Radic Biol Med 2019; 130:174-188. [PMID: 30315935 DOI: 10.1016/j.freeradbiomed.2018.10.406] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 10/03/2018] [Accepted: 10/06/2018] [Indexed: 01/24/2023]
Abstract
We previously demonstrated that the loss of female hormones induces cardiac and mitochondrial dysfunction in the female heart. Here, we show the impact of endurance training for twelve weeks, a nonpharmacological therapy against cardiovascular disease caused by ovariectomy and its contribution to cardiac contractility, mitochondrial quality control, bioenergetics and oxidative damage. We found that ovariectomy induced cardiac hypertrophy and dysfunction by decreasing SERCA2 and increasing phospholamban protein expression. Endurance training restored myocardial contractility, SERCA2 levels, increased calcium transient in ovariectomized rats but did not change phospholamban protein expression or cardiac hypertrophy. Additionally, ovariectomy decreased the amount of intermyofibrillar mitochondria and induced mitochondrial fragmentation that were accompanied by decreased levels of mitofusin 1, PGC-1α, NRF-1, total AMPK-α and mitochondrial Tfam. Endurance training prevented all these features except for mitofusin 1. Ovariectomy reduced O2 consumption, elevated O2.- release and increased Ca2+-induced mitochondrial permeability transition pore opening in both mitochondrial subpopulations. Ovariectomy also increased NOX-4 protein expression in the heart, reduced mitochondrial Mn-SOD, catalase protein expression and increased protein carbonylation in both mitochondrial subpopulations, which were prevented by endurance training. Taken together, our findings show that endurance training prevented cardiac contractile dysfunction and mitochondrial quality control in ovariectomized rats.
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Affiliation(s)
- Elis Aguiar Morra
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Paula Lopes Rodrigues
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | | | | | - Renata Andrade Ávila
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | | | | | - Donald M Bers
- Department of Pharmacology, University of California, Davis, USA
| | - Silvia Guatimosim
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Minas Gerais, MG, Brazil
| | - Ivanita Stefanon
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Rogério Faustino Ribeiro Júnior
- Department of Physiological Sciences, Federal University of Espírito Santo, Vitória, ES, Brazil; Department of Pharmacology, University of California, Davis, USA.
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7
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Bianchi VE. Impact of Nutrition on Cardiovascular Function. Curr Probl Cardiol 2018; 45:100391. [PMID: 30318107 DOI: 10.1016/j.cpcardiol.2018.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 08/31/2018] [Indexed: 12/11/2022]
Abstract
The metabolic sources of energy for myocardial contractility include mainly free fatty acids (FFA) for 95%, and in lesser amounts for 5% from glucose and minimal contributions from other substrates such lactate, ketones, and amino acids. However, myocardial efficiency is influenced by metabolic condition, overload, and ischemia. During cardiac stress, cardiomyocytes increase glucose oxidation and reduce FFA oxidation. In patients with ischemic coronary disease and heart failure, the low oxygen availability limits myocardial reliance on FFA and glucose utilization must increase. Although glucose uptake is fundamental to cardiomyocyte function, an excessive intracellular glucose level is detrimental. Insulin plays a fundamental role in maintaining myocardial efficiency and in reducing glycemia and inflammation; this is particularly evident in obese and type-2 diabetic patients. An excess of F availability increase fat deposition within cardiomyocytes and reduces glucose oxidation. In patients with high body mass index, a restricted diet or starvation have positive effects on cardiac metabolism and function while, in patients with low body mass index, restrictive diets, or starvation have a deleterious effect. Thus, weight loss in obese patients has positive impacts on ventricular mass and function, whereas, in underweight heart failure patients, such weight reduction adds to the risk of heart damage, predisposing to cachexia. Nutrition plays an essential role in the evolution of cardiovascular disease and should be taken into account. An energy-restricted diet improves myocardial efficiency but can represent a potential risk of heart damage, particularly in patients affected by cardiovascular disease. Micronutrient integration has a marginal effect on cardiovascular efficiency.
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8
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Ribeiro Junior RF, Dabkowski ER, Shekar KC, O Connell KA, Hecker PA, Murphy MP. MitoQ improves mitochondrial dysfunction in heart failure induced by pressure overload. Free Radic Biol Med 2018; 117:18-29. [PMID: 29421236 PMCID: PMC5866124 DOI: 10.1016/j.freeradbiomed.2018.01.012] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/03/2018] [Accepted: 01/10/2018] [Indexed: 01/01/2023]
Abstract
Heart failure remains a major public-health problem with an increase in the number of patients worsening from this disease. Despite current medical therapy, the condition still has a poor prognosis. Heart failure is complex but mitochondrial dysfunction seems to be an important target to improve cardiac function directly. Our goal was to analyze the effects of MitoQ (100 µM in drinking water) on the development and progression of heart failure induced by pressure overload after 14 weeks. The main findings are that pressure overload-induced heart failure in rats decreased cardiac function in vivo that was not altered by MitoQ. However, we observed a reduction in right ventricular hypertrophy and lung congestion in heart failure animals treated with MitoQ. Heart failure also decreased total mitochondrial protein content, mitochondrial membrane potential in the intermyofibrillar mitochondria. MitoQ restored membrane potential in IFM but did not restore mitochondrial protein content. These alterations are associated with the impairment of basal and stimulated mitochondrial respiration in IFM and SSM induced by heart failure. Moreover, MitoQ restored mitochondrial respiration in heart failure induced by pressure overload. We also detected higher levels of hydrogen peroxide production in heart failure and MitoQ restored the increase in ROS production. MitoQ was also able to improve mitochondrial calcium retention capacity, mainly in the SSM whereas in the IFM we observed a small alteration. In summary, MitoQ improves mitochondrial dysfunction in heart failure induced by pressure overload, by decreasing hydrogen peroxide formation, improving mitochondrial respiration and improving mPTP opening.
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Affiliation(s)
- Rogério Faustino Ribeiro Junior
- Division of Cardiology, Department of Medicine, University of Maryland, Baltimore, MD, USA; Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil.
| | - Erinne Rose Dabkowski
- Division of Cardiology, Department of Medicine, University of Maryland, Baltimore, MD, USA
| | | | - Kelly A O Connell
- Division of Cardiology, Department of Medicine, University of Maryland, Baltimore, MD, USA
| | - Peter A Hecker
- Division of Cardiology, Department of Medicine, University of Maryland, Baltimore, MD, USA
| | - Michael P Murphy
- Medical Research Council Mitochondrial Biology Unit, Cambridge BioMedical Campus, Cambridge, UK
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9
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Ribeiro Junior RF, Rodrigues PL, Morra EA, Ronconi KS, Do Val Lima PR, Porto ML, Simões MR, Vassallo DV, Figueiredo SG, Stefanon I. Estrogen regulates spatially distinct cardiac mitochondrial subpopulations. Mitochondrion 2017; 35:87-96. [PMID: 28572055 DOI: 10.1016/j.mito.2017.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 03/24/2017] [Accepted: 05/25/2017] [Indexed: 10/19/2022]
Abstract
Increased susceptibility to permeability transition pore (mPTP) is a significant concern to decreased cardiac performance in postmenopausal females. The goal of this study was to assess the effects of estrogen deficiency on the two spatially distinct mitochondrial subpopulations from left ventricle: subsarcolemmal mitochondria (SSM) and intermyofibrillar mitochondria (IFM) based on: morphology, membrane potential, oxidative phosphorylation, mPTP and reactive oxygen species production. Female rats (8weeks old) that underwent bilateral ovariectomy were randomly assigned to receive daily treatment with placebo (OVX), estrogen replacement (OVX+E2) and Sham for 60days. The yield for IFM was found higher in the OVX group and lower in the SSM. SSM internal complexity and size were higher in the OVX group, although membrane potential was not different. The maximal rate of mitochondrial respiration, states 3 and 4, using glutamate+malate as substrate, were higher in IFM and SSM from the OVX group. The respiratory control ratio (RCR - state3/state 4), was not different in both SSM and IFM with glutamate+malate. The ADP:O ratio was found lower in IFM and SSM from OVX compared to Sham. When pyruvate was used, state 3 was found unchanged in both IFM and SSM, state 4 was greater in IFM from OVX rats compared to Sham and the ADP/O ratio was decreased. The RCR was unchanged in both subpopulations. The IFM from OVX rats presented a lower Ca2+retention capacity compared to Sham, however, the SSM remained unchanged. Hydrogen peroxide formation was found increased in the IFM from OVX animals with glutamate+malate and rotenone+succinate as substrates. The SSM showed increased ROS production only with rotenone+succinate. Western blot analyzes showed decreased levels of PGC-1α and NRF-1 in the OVX group. Estrogen replacement was able to restore most of the alterations induced by ovariectomy. In conclusion, our data shows that estrogen deficiency has distinct effects on the two spatially distinct mitochondrial subpopulations in oxidative phosphorylation, morphology, calcium retention capacity and ROS production.
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Affiliation(s)
| | - Paula Lopes Rodrigues
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Elis Aguiar Morra
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Karoline Sousa Ronconi
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | | | - Marcella Leite Porto
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Maylla Ronacher Simões
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | | | - Suely Gomes Figueiredo
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Ivanita Stefanon
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
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10
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Bozkurt B, Aguilar D, Deswal A, Dunbar SB, Francis GS, Horwich T, Jessup M, Kosiborod M, Pritchett AM, Ramasubbu K, Rosendorff C, Yancy C. Contributory Risk and Management of Comorbidities of Hypertension, Obesity, Diabetes Mellitus, Hyperlipidemia, and Metabolic Syndrome in Chronic Heart Failure: A Scientific Statement From the American Heart Association. Circulation 2016; 134:e535-e578. [DOI: 10.1161/cir.0000000000000450] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Ribeiro RF, Ronconi KS, Morra EA, Do Val Lima PR, Porto ML, Vassallo DV, Figueiredo SG, Stefanon I. Sex differences in the regulation of spatially distinct cardiac mitochondrial subpopulations. Mol Cell Biochem 2016; 419:41-51. [PMID: 27370644 DOI: 10.1007/s11010-016-2748-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/18/2016] [Indexed: 02/03/2023]
Abstract
Spatially distinct mitochondrial subpopulation may mediate myocardial pathology through permeability transition pore opening (MPTP). The goal of this study was to assess sex differences on the two spatially distinct mitochondrial subpopulations: subsarcolemmal mitochondria (SSM) and intermyofibrillar mitochondria (IFM) based on morphology, membrane potential, mitochondrial function, oxidative phosphorylation, and MPTP. Aged matched Wistar rats were used to study SSM and IFM. Mitochondrial size was larger in SSM than in IFM in both genders. However, SSM internal complexity, yield, and membrane potential were higher in male than in female. The maximal rate of mitochondrial respiration, states 3 and 4, using glutamate + malate as substrate, were higher in IFM and SSM in the male group compared to female. The respiratory control ratio (RCR-state3/state 4), was not different in both SSM and IFM with glutamate + malate. The ADP:O ratio was found higher in IFM and SSM from female compared to males. When pyruvate was used, state 3 was found unchanged in both IFM and SSM, state 4 was also greater in male IFM compared to female. The RCR increased in the SSM while IFM remained the same. State 4 was higher in male SSM while in the IFM remained the same. The IFM presented a higher Ca(2+) retention capacity compared with SSM, however, there was a greater sensitivity to Ca(2+)-induced MPTP in SSM and IFM in the male group compared to female. In conclusion, our data show that spatially distinct mitochondrial subpopulations have sex-based differences in oxidative phosphorylation, morphology, and calcium retention capacity.
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Affiliation(s)
- Rogério Faustino Ribeiro
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil.
| | - Karoline Sousa Ronconi
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Elis Aguiar Morra
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | | | - Marcella Leite Porto
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | | | - Suely Gomes Figueiredo
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Ivanita Stefanon
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
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12
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Taegtmeyer H, Young ME, Lopaschuk GD, Abel ED, Brunengraber H, Darley-Usmar V, Des Rosiers C, Gerszten R, Glatz JF, Griffin JL, Gropler RJ, Holzhuetter HG, Kizer JR, Lewandowski ED, Malloy CR, Neubauer S, Peterson LR, Portman MA, Recchia FA, Van Eyk JE, Wang TJ. Assessing Cardiac Metabolism: A Scientific Statement From the American Heart Association. Circ Res 2016; 118:1659-701. [PMID: 27012580 DOI: 10.1161/res.0000000000000097] [Citation(s) in RCA: 185] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In a complex system of interrelated reactions, the heart converts chemical energy to mechanical energy. Energy transfer is achieved through coordinated activation of enzymes, ion channels, and contractile elements, as well as structural and membrane proteins. The heart's needs for energy are difficult to overestimate. At a time when the cardiovascular research community is discovering a plethora of new molecular methods to assess cardiac metabolism, the methods remain scattered in the literature. The present statement on "Assessing Cardiac Metabolism" seeks to provide a collective and curated resource on methods and models used to investigate established and emerging aspects of cardiac metabolism. Some of those methods are refinements of classic biochemical tools, whereas most others are recent additions from the powerful tools of molecular biology. The aim of this statement is to be useful to many and to do justice to a dynamic field of great complexity.
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13
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LIU W, WANG X, MEI Z, GONG J, GAO X, ZHAO Y, MA J, XIE F, QIAN L. Chronic Stress Promotes the Progression of Pressure Overload-Induced Cardiac Dysfunction Through Inducing More Apoptosis and Fibrosis. Physiol Res 2015; 64:325-34. [DOI: 10.33549/physiolres.932778] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Stress serves as a risk factor in the etiology of hypertension. The present study was designed to decipher the effect and mechanism of chronic stress on the progression of pressure overload-induced cardiac dysfunction. We used abdominal aortic constriction (AAC) to induce pressure overload with or without chronic restraint stress to establish the animal models. Echocardiographic analysis showed pressure overload-induced cardiac dysfunction was worsened by chronic stress. Compared with the AAC rats, there is a significant increase in cardiac hypertrophy, injury, apoptosis and fibrosis of the AAC + stress rats. Furthermore, we found the secretion of norepinephrine (NE) increased after the AAC operation, while the level of NE was higher in the AAC + stress group. Cardiomyocytes and cardiac fibroblasts isolated from neonatal rats were cultured and separately treated with 1, 10, 100 μM NE. The higher concentration NE induced more cardiomyocytes hypertrophy and apoptosis, cardiac fibroblasts proliferation and collagen expression. These results revealed that high level of NE-induced cardiomyocytes hypertrophy and apoptosis, cardiac fibroblasts proliferation and collagen expression further contributes to the effect of chronic stress on acceleration of pressure overload-induced cardiac dysfunction.
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Affiliation(s)
| | | | | | | | | | | | | | | | - L. QIAN
- Beijing Institute of Basic Medical Sciences, Beijing, China
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