1
|
Falcão-Pires I, Ferreira AF, Trindade F, Bertrand L, Ciccarelli M, Visco V, Dawson D, Hamdani N, Van Laake LW, Lezoualc'h F, Linke WA, Lunde IG, Rainer PP, Abdellatif M, Van der Velden J, Cosentino N, Paldino A, Pompilio G, Zacchigna S, Heymans S, Thum T, Tocchetti CG. Mechanisms of myocardial reverse remodelling and its clinical significance: A scientific statement of the ESC Working Group on Myocardial Function. Eur J Heart Fail 2024. [PMID: 38837573 DOI: 10.1002/ejhf.3264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 03/22/2024] [Accepted: 04/18/2024] [Indexed: 06/07/2024] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of morbimortality in Europe and worldwide. CVD imposes a heterogeneous spectrum of cardiac remodelling, depending on the insult nature, that is, pressure or volume overload, ischaemia, arrhythmias, infection, pathogenic gene variant, or cardiotoxicity. Moreover, the progression of CVD-induced remodelling is influenced by sex, age, genetic background and comorbidities, impacting patients' outcomes and prognosis. Cardiac reverse remodelling (RR) is defined as any normative improvement in cardiac geometry and function, driven by therapeutic interventions and rarely occurring spontaneously. While RR is the outcome desired for most CVD treatments, they often only slow/halt its progression or modify risk factors, calling for novel and more timely RR approaches. Interventions triggering RR depend on the myocardial insult and include drugs (renin-angiotensin-aldosterone system inhibitors, beta-blockers, diuretics and sodium-glucose cotransporter 2 inhibitors), devices (cardiac resynchronization therapy, ventricular assist devices), surgeries (valve replacement, coronary artery bypass graft), or physiological responses (deconditioning, postpartum). Subsequently, cardiac RR is inferred from the degree of normalization of left ventricular mass, ejection fraction and end-diastolic/end-systolic volumes, whose extent often correlates with patients' prognosis. However, strategies aimed at achieving sustained cardiac improvement, predictive models assessing the extent of RR, or even clinical endpoints that allow for distinguishing complete from incomplete RR or adverse remodelling objectively, remain limited and controversial. This scientific statement aims to define RR, clarify its underlying (patho)physiologic mechanisms and address (non)pharmacological options and promising strategies to promote RR, focusing on the left heart. We highlight the predictors of the extent of RR and review the prognostic significance/impact of incomplete RR/adverse remodelling. Lastly, we present an overview of RR animal models and potential future strategies under pre-clinical evaluation.
Collapse
Affiliation(s)
- Inês Falcão-Pires
- UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Ana Filipa Ferreira
- UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Fábio Trindade
- UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Luc Bertrand
- Université Catholique de Louvain, Institut de Recherche Expérimentale et Clinique, Pôle of Cardiovascular Research, Brussels, Belgium
- WELBIO, Department, WEL Research Institute, Wavre, Belgium
| | - Michele Ciccarelli
- Cardiovascular Research Unit, Department of Medicine and Surgery, University of Salerno, Baronissi, Italy
| | - Valeria Visco
- Cardiovascular Research Unit, Department of Medicine and Surgery, University of Salerno, Baronissi, Italy
| | - Dana Dawson
- Aberdeen Cardiovascular and Diabetes Centre, School of Medicine and Dentistry, University of Aberdeen, Aberdeen, UK
| | - Nazha Hamdani
- Department of Cellular and Translational Physiology, Institute of Physiology, Ruhr University Bochum, Bochum, Germany
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Ruhr University Bochum, Bochum, Germany
- HCEMM-SU Cardiovascular Comorbidities Research Group, Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary
- Department of Physiology, Cardiovascular Research Institute Maastricht University Maastricht, Maastricht, the Netherlands
| | - Linda W Van Laake
- Division Heart and Lungs, Department of Cardiology and Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Frank Lezoualc'h
- Institut des Maladies Métaboliques et Cardiovasculaires, Inserm, Université Paul Sabatier, UMR 1297-I2MC, Toulouse, France
| | - Wolfgang A Linke
- Institute of Physiology II, University Hospital Münster, Münster, Germany
| | - Ida G Lunde
- Oslo Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital Ullevaal, Oslo, Norway
- KG Jebsen Center for Cardiac Biomarkers, Campus Ahus, University of Oslo, Oslo, Norway
| | - Peter P Rainer
- Division of Cardiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- St. Johann in Tirol General Hospital, St. Johann in Tirol, Austria
| | - Mahmoud Abdellatif
- Division of Cardiology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | | | - Nicola Cosentino
- Centro Cardiologico Monzino IRCCS, Milan, Italy
- Cardiovascular Section, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Alessia Paldino
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Giulio Pompilio
- Centro Cardiologico Monzino IRCCS, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Serena Zacchigna
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Stephane Heymans
- Department of Cardiology, CARIM Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, The Netherlands
- Centre of Cardiovascular Research, University of Leuven, Leuven, Belgium
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies, Hannover Medical School, Hannover, Germany
| | - Carlo Gabriele Tocchetti
- Department of Translational Medical Sciences (DISMET), Center for Basic and Clinical Immunology Research (CISI), Interdepartmental Center of Clinical and Translational Sciences (CIRCET), Interdepartmental Hypertension Research Center (CIRIAPA), Federico II University, Naples, Italy
| |
Collapse
|
2
|
Croft AJ, Kelly C, Chen D, Haw TJ, Balachandran L, Murtha LA, Boyle AJ, Sverdlov AL, Ngo DTM. Sex-based differences in short- and longer-term diet-induced metabolic heart disease. Am J Physiol Heart Circ Physiol 2024; 326:H1219-H1251. [PMID: 38363215 DOI: 10.1152/ajpheart.00467.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 01/30/2024] [Accepted: 02/12/2024] [Indexed: 02/17/2024]
Abstract
Sex-based differences in the development of obesity-induced cardiometabolic dysfunction are well documented, however, the specific mechanisms are not completely understood. Obesity has been linked to dysregulation of the epitranscriptome, but the role of N6-methyladenosine (m6A) RNA methylation has not been investigated in relation to the sex differences during obesity-induced cardiac dysfunction. In the current study, male and female C57BL/6J mice were subjected to short- and long-term high-fat/high-sucrose (HFHS) diet to induce obesogenic stress. Cardiac echocardiography showed males developed systolic and diastolic dysfunction after 4 mo of diet, but females maintained normal cardiac function despite both sexes being metabolically dysfunctional. Cardiac m6A machinery gene expression was differentially regulated by duration of HFHS diet in male, but not female mice, and left ventricular ejection fraction correlated with RNA machinery gene levels in a sex- and age-dependent manner. RNA-sequencing of cardiac transcriptome revealed that females, but not males may undergo protective cardiac remodeling early in the course of obesogenic stress. Taken together, our study demonstrates for the first time that cardiac RNA methylation machinery genes are regulated early during obesogenic stress in a sex-dependent manner and may play a role in the sex differences observed in cardiometabolic dysfunction.NEW & NOTEWORTHY Sex differences in obesity-associated cardiomyopathy are well documented but incompletely understood. We show for the first time that RNA methylation machinery genes may be regulated in response to obesogenic diet in a sex- and age-dependent manner and levels may correspond to cardiac systolic function. Our cardiac RNA-seq analysis suggests female, but not male mice may be protected from cardiac dysfunction by a protective cardiac remodeling response early during obesogenic stress.
Collapse
Affiliation(s)
- Amanda J Croft
- School of Medicine and Public Health, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Conagh Kelly
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
| | - Dongqing Chen
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
| | - Tatt Jhong Haw
- School of Medicine and Public Health, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Lohis Balachandran
- School of Medicine and Public Health, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Lucy A Murtha
- School of Medicine and Public Health, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Andrew J Boyle
- School of Medicine and Public Health, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
- Hunter New England Local Health District, Newcastle, New South Wales, Australia
| | - Aaron L Sverdlov
- School of Medicine and Public Health, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
- Hunter New England Local Health District, Newcastle, New South Wales, Australia
| | - Doan T M Ngo
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, University of Newcastle, Callaghan, New South Wales, Australia
| |
Collapse
|
3
|
Xiao YL, Gong Y, Qi YJ, Shao ZM, Jiang YZ. Effects of dietary intervention on human diseases: molecular mechanisms and therapeutic potential. Signal Transduct Target Ther 2024; 9:59. [PMID: 38462638 PMCID: PMC10925609 DOI: 10.1038/s41392-024-01771-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 02/05/2024] [Accepted: 02/18/2024] [Indexed: 03/12/2024] Open
Abstract
Diet, serving as a vital source of nutrients, exerts a profound influence on human health and disease progression. Recently, dietary interventions have emerged as promising adjunctive treatment strategies not only for cancer but also for neurodegenerative diseases, autoimmune diseases, cardiovascular diseases, and metabolic disorders. These interventions have demonstrated substantial potential in modulating metabolism, disease trajectory, and therapeutic responses. Metabolic reprogramming is a hallmark of malignant progression, and a deeper understanding of this phenomenon in tumors and its effects on immune regulation is a significant challenge that impedes cancer eradication. Dietary intake, as a key environmental factor, can influence tumor metabolism. Emerging evidence indicates that dietary interventions might affect the nutrient availability in tumors, thereby increasing the efficacy of cancer treatments. However, the intricate interplay between dietary interventions and the pathogenesis of cancer and other diseases is complex. Despite encouraging results, the mechanisms underlying diet-based therapeutic strategies remain largely unexplored, often resulting in underutilization in disease management. In this review, we aim to illuminate the potential effects of various dietary interventions, including calorie restriction, fasting-mimicking diet, ketogenic diet, protein restriction diet, high-salt diet, high-fat diet, and high-fiber diet, on cancer and the aforementioned diseases. We explore the multifaceted impacts of these dietary interventions, encompassing their immunomodulatory effects, other biological impacts, and underlying molecular mechanisms. This review offers valuable insights into the potential application of these dietary interventions as adjunctive therapies in disease management.
Collapse
Affiliation(s)
- Yu-Ling Xiao
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yue Gong
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Ying-Jia Qi
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Zhi-Ming Shao
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China
| | - Yi-Zhou Jiang
- Key Laboratory of Breast Cancer in Shanghai, Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, China.
| |
Collapse
|
4
|
Brito Lucas AM, Bezerra Palacio P, Oliveira Cunha PL, Tarso Facundo H. Calorie restriction anti-hypertrophic effects are associated with improved mitochondrial content, blockage of Ca 2+-induced mitochondrial damage, and lower reverse electron transport-mediated oxidative stress. Free Radic Res 2024; 58:293-310. [PMID: 38630026 DOI: 10.1080/10715762.2024.2342962] [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: 11/08/2023] [Accepted: 03/15/2024] [Indexed: 05/23/2024]
Abstract
Calorie restriction is a nutritional intervention that reproducibly protects against the maladaptive consequences of cardiovascular diseases. Pathological cardiac hypertrophy leads to cellular growth, dysfunction (with mitochondrial dysregulation), and oxidative stress. The mechanisms behind the cardiovascular protective effects of calorie restriction are still under investigation. In this study, we show that this dietetic intervention prevents cardiac protein elevation, avoids fetal gene reprogramming (atrial natriuretic peptide), and blocks the increase in heart weight per tibia length index (HW/TL) seen in isoproterenol-induced cardiac hypertrophy. Our findings suggest that calorie restriction inhibits cardiac pathological growth while also lowering mitochondrial reverse electron transport-induced hydrogen peroxide formation and improving mitochondrial content. Calorie restriction also attenuated the opening of the Ca2+-induced mitochondrial permeability transition pore. We also found that calorie restriction blocked the negative correlation of antioxidant enzymes (superoxide dimutase and glutatione peroxidase activity) and HW/TL, leading to the maintenance of protein sulphydryls and glutathione levels. Given the nature of isoproterenol-induced cardiac hypertrophy, we investigated whether calorie restriction could alter cardiac beta-adrenergic sensitivity. Using isolated rat hearts in a Langendorff system, we found that calorie restricted hearts have preserved beta-adrenergic signaling. In contrast, hypertrophic hearts (treated for seven days with isoproterenol) were insensitive to beta-adrenergic activation using isoproterenol (50 nM). Despite protecting against cardiac hypertrophy, calorie restriction did not alter the lack of responsiveness to isoproterenol in isolated hearts harvested from isoproterenol-treated rats. These results suggest (through a series of mitochondrial, oxidative stress, and cardiac hemodynamic studies) that calorie restriction possesses beneficial effects against hypertrophic cardiomyopathy.
Collapse
|
5
|
Gao S, Liu XP, Li TT, Chen L, Feng YP, Wang YK, Yin YJ, Little PJ, Wu XQ, Xu SW, Jiang XD. Animal models of heart failure with preserved ejection fraction (HFpEF): from metabolic pathobiology to drug discovery. Acta Pharmacol Sin 2024; 45:23-35. [PMID: 37644131 PMCID: PMC10770177 DOI: 10.1038/s41401-023-01152-0] [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: 04/19/2023] [Accepted: 08/08/2023] [Indexed: 08/31/2023] Open
Abstract
Heart failure (HF) with preserved ejection fraction (HFpEF) is currently a preeminent challenge for cardiovascular medicine. It has a poor prognosis, increasing mortality, and is escalating in prevalence worldwide. Despite accounting for over 50% of all HF patients, the mechanistic underpinnings driving HFpEF are poorly understood, thus impeding the discovery and development of mechanism-based therapies. HFpEF is a disease syndrome driven by diverse comorbidities, including hypertension, diabetes and obesity, pulmonary hypertension, aging, and atrial fibrillation. There is a lack of high-fidelity animal models that faithfully recapitulate the HFpEF phenotype, owing primarily to the disease heterogeneity, which has hampered our understanding of the complex pathophysiology of HFpEF. This review provides an updated overview of the currently available animal models of HFpEF and discusses their characteristics from the perspective of energy metabolism. Interventional strategies for efficiently utilizing energy substrates in preclinical HFpEF models are also discussed.
Collapse
Affiliation(s)
- Si Gao
- Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, China
| | - Xue-Ping Liu
- Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, China
| | - Ting-Ting Li
- Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, China
| | - Li Chen
- Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, China
| | - Yi-Ping Feng
- Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, China
| | - Yu-Kun Wang
- Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, China
| | - Yan-Jun Yin
- School of Pharmacy, Bengbu Medical College, Bengbu, 233000, China
| | - Peter J Little
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, 4102, Australia
| | - Xiao-Qian Wu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 511436, China.
| | - Suo-Wen Xu
- Department of Endocrinology, First Affiliated Hospital, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China.
| | - Xu-Dong Jiang
- Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, China.
| |
Collapse
|
6
|
Mao Y, Fu Q, Su F, Zhang W, Zhang Z, Zhou Y, Yang C. Trends in worldwide research on cardiac fibrosis over the period 1989-2022: a bibliometric study. Front Cardiovasc Med 2023; 10:1182606. [PMID: 37342441 PMCID: PMC10277498 DOI: 10.3389/fcvm.2023.1182606] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/24/2023] [Indexed: 06/22/2023] Open
Abstract
Background Cardiac fibrosis is a hallmark of various end-stage cardiovascular diseases (CVDs) and a potent contributor to adverse cardiovascular events. During the past decades, extensive publications on this topic have emerged worldwide, while a bibliometric analysis of the current status and research trends is still lacking. Methods We retrieved relevant 13,446 articles on cardiac fibrosis published between 1989 and 2022 from the Web of Science Core Collection (WoSCC). Bibliometrix was used for science mapping of the literature, while VOSviewer and CiteSpace were applied to visualize co-authorship, co-citation, co-occurrence, and bibliographic coupling networks. Results We identified four major research trends: (1) pathophysiological mechanisms; (2) treatment strategies; (3) cardiac fibrosis and related CVDs; (4) early diagnostic methods. The most recent and important research themes such as left ventricular dysfunction, transgenic mice, and matrix metalloproteinase were generated by burst analysis of keywords. The reference with the most citations was a contemporary review summarizing the role of cardiac fibroblasts and fibrogenic molecules in promoting fibrogenesis following myocardial injury. The top 3 most influential countries were the United States, China, and Germany, while the most cited institution was Shanghai Jiao Tong University, followed by Nanjing Medical University and Capital Medical University. Conclusions The number and impact of global publications on cardiac fibrosis has expanded rapidly over the past 30 years. These results are in favor of paving the way for future research on the pathogenesis, diagnosis, and treatment of cardiac fibrosis.
Collapse
Affiliation(s)
- Yukang Mao
- Department of Cardiology, the Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, China
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qiangqiang Fu
- Department of General Practice, Clinical Research Center for General Practice, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China
| | - Feng Su
- Department of Cardiology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wenjia Zhang
- Department of Cardiology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhong Zhang
- Department of Cardiology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yimeng Zhou
- Department of Cardiology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chuanxi Yang
- Department of Cardiology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, China
| |
Collapse
|
7
|
Martin TG, Juarros MA, Leinwand LA. Regression of cardiac hypertrophy in health and disease: mechanisms and therapeutic potential. Nat Rev Cardiol 2023; 20:347-363. [PMID: 36596855 PMCID: PMC10121965 DOI: 10.1038/s41569-022-00806-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/08/2022] [Indexed: 01/05/2023]
Abstract
Left ventricular hypertrophy is a leading risk factor for cardiovascular morbidity and mortality. Although reverse ventricular remodelling was long thought to be irreversible, evidence from the past three decades indicates that this process is possible with many existing heart disease therapies. The regression of pathological hypertrophy is associated with improved cardiac function, quality of life and long-term health outcomes. However, less than 50% of patients respond favourably to most therapies, and the reversibility of remodelling is influenced by many factors, including age, sex, BMI and disease aetiology. Cardiac hypertrophy also occurs in physiological settings, including pregnancy and exercise, although in these cases, hypertrophy is associated with normal or improved ventricular function and is completely reversible postpartum or with cessation of training. Studies over the past decade have identified the molecular features of hypertrophy regression in health and disease settings, which include modulation of protein synthesis, microRNAs, metabolism and protein degradation pathways. In this Review, we summarize the evidence for hypertrophy regression in patients with current first-line pharmacological and surgical interventions. We further discuss the molecular features of reverse remodelling identified in cell and animal models, highlighting remaining knowledge gaps and the essential questions for future investigation towards the goal of designing specific therapies to promote regression of pathological hypertrophy.
Collapse
Affiliation(s)
- Thomas G Martin
- Department of Molecular, Cellular and Developmental Biology, University of Colorado Boulder, Boulder, CO, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, USA
| | - Miranda A Juarros
- Department of Molecular, Cellular and Developmental Biology, University of Colorado Boulder, Boulder, CO, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, USA
| | - Leslie A Leinwand
- Department of Molecular, Cellular and Developmental Biology, University of Colorado Boulder, Boulder, CO, USA.
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, USA.
| |
Collapse
|
8
|
Hajializadeh Z, Khaksari M, Dabiri S, Darvishzadeh Mahani F, Raji-Amirhasani A, Bejeshk MA. Protective effects of calorie restriction and 17-β estradiol on cardiac hypertrophy in ovariectomized obese rats. PLoS One 2023; 18:e0282089. [PMID: 37098007 PMCID: PMC10128952 DOI: 10.1371/journal.pone.0282089] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/06/2023] [Indexed: 04/26/2023] Open
Abstract
Obesity and menopause lead to cardiovascular diseases. Calorie restriction (CR) can modulate estrogen deficiency and obesity-related cardiovascular diseases. The protective effects of CR and estradiol on cardiac hypertrophy in ovariectomized obese rats were explored in this study. The adult female Wistar rats were divided into sham and ovariectomized (OVX) groups that received a high-fat diet (60% HFD) or standard diet (SD) or 30% CR for 16 weeks, and then, 1mg/kg E2 (17-β estradiol) was injected intraperitoneally every 4 days for four weeks in OVX-rats. Hemodynamic parameters were evaluated before and after each diet. Heart tissues were collected for biochemical, histological, and molecular analysis. HFD consumption led to weight gain in sham and OVX rats. In contrast, CR and E2 led to body weight loss in these animals. Also, heart weight (HW), heart weight/body weight (HW/BW) ratio, and left ventricular weight (LVW) were enhanced in OVX rats that received SD and HFD. E2 reduced these indexes in both diet conditions but reduction effects of CR were seen only in HFD groups. HFD and SD feeding increased hemodynamic parameters, ANP (atrial natriuretic peptide) mRNA expression, and TGF-β1(transforming growth factor-beta 1) protein level in the OVX animals, while CR and E2 reduced these factors. Cardiomyocyte diameter and hydroxyproline content were increased in the OVX-HFD groups. Nevertheless, CR and E2 decreased these indicators. The results showed that CR and E2 treatment reduced obesity-induced-cardiac hypertrophy in ovariectomized groups (20% and 24% respectively). CR appears to have almost as reducing effects as estrogen therapy on cardiac hypertrophy. The findings suggest that CR can be considered a therapeutic candidate for postmenopausal cardiovascular disease.
Collapse
Affiliation(s)
- Zahra Hajializadeh
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Khaksari
- Endocrinology and Metabolism Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences Kerman, Kerman, Iran
| | - Shahriar Dabiri
- Pathology and Stem Cell Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Fatemeh Darvishzadeh Mahani
- Endocrinology and Metabolism Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences Kerman, Kerman, Iran
| | - Alireza Raji-Amirhasani
- Endocrinology and Metabolism Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences Kerman, Kerman, Iran
| | - Mohammad Abbas Bejeshk
- Department of Physiology and Pharmacology, Afzalipour Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| |
Collapse
|
9
|
Guo J, Huang X, Dou L, Yan M, Shen T, Tang W, Li J. Aging and aging-related diseases: from molecular mechanisms to interventions and treatments. Signal Transduct Target Ther 2022; 7:391. [PMID: 36522308 PMCID: PMC9755275 DOI: 10.1038/s41392-022-01251-0] [Citation(s) in RCA: 199] [Impact Index Per Article: 99.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 11/03/2022] [Accepted: 11/10/2022] [Indexed: 12/23/2022] Open
Abstract
Aging is a gradual and irreversible pathophysiological process. It presents with declines in tissue and cell functions and significant increases in the risks of various aging-related diseases, including neurodegenerative diseases, cardiovascular diseases, metabolic diseases, musculoskeletal diseases, and immune system diseases. Although the development of modern medicine has promoted human health and greatly extended life expectancy, with the aging of society, a variety of chronic diseases have gradually become the most important causes of disability and death in elderly individuals. Current research on aging focuses on elucidating how various endogenous and exogenous stresses (such as genomic instability, telomere dysfunction, epigenetic alterations, loss of proteostasis, compromise of autophagy, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, altered intercellular communication, deregulated nutrient sensing) participate in the regulation of aging. Furthermore, thorough research on the pathogenesis of aging to identify interventions that promote health and longevity (such as caloric restriction, microbiota transplantation, and nutritional intervention) and clinical treatment methods for aging-related diseases (depletion of senescent cells, stem cell therapy, antioxidative and anti-inflammatory treatments, and hormone replacement therapy) could decrease the incidence and development of aging-related diseases and in turn promote healthy aging and longevity.
Collapse
Affiliation(s)
- Jun Guo
- grid.506261.60000 0001 0706 7839The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730 China
| | - Xiuqing Huang
- grid.506261.60000 0001 0706 7839The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730 China
| | - Lin Dou
- grid.506261.60000 0001 0706 7839The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730 China
| | - Mingjing Yan
- grid.506261.60000 0001 0706 7839The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730 China
| | - Tao Shen
- grid.506261.60000 0001 0706 7839The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730 China
| | - Weiqing Tang
- grid.506261.60000 0001 0706 7839The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730 China
| | - Jian Li
- grid.506261.60000 0001 0706 7839The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730 China
| |
Collapse
|
10
|
Yao Y, Xue J, Li B. Obesity and sudden cardiac death: Prevalence, pathogenesis, prevention and intervention. Front Cell Dev Biol 2022; 10:1044923. [PMID: 36531958 PMCID: PMC9757164 DOI: 10.3389/fcell.2022.1044923] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/24/2022] [Indexed: 02/04/2024] Open
Abstract
Obesity and sudden cardiac death (SCD) share common risk factors. Obesity, in and of itself, can result in the development of SCD. Numerous epidemiologic and clinical studies have demonstrated the close relationships between obesity and SCD, however, the underlying mechanisms remain incompletely understood. Various evidences support the significance of excess adiposity in determining the risk of SCD, including anatomical remodeling, electrical remodeling, metabolic dysfunction, autonomic imbalance. Weight reduction has improved obesity related comorbidities, and reversed abnormal cardiac remodeling. Indeed, it is still unknown whether weight loss contributes to decreased risk of SCD. Further high-quality, prospective trials are needed to strengthen our understanding on weight management and SCD.
Collapse
Affiliation(s)
- Yan Yao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | | | | |
Collapse
|
11
|
Li C, Qin D, Hu J, Yang Y, Hu D, Yu B. Inflamed adipose tissue: A culprit underlying obesity and heart failure with preserved ejection fraction. Front Immunol 2022; 13:947147. [PMID: 36483560 PMCID: PMC9723346 DOI: 10.3389/fimmu.2022.947147] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 11/03/2022] [Indexed: 11/23/2022] Open
Abstract
The incidence of heart failure with preserved ejection fraction is increasing in patients with obesity, diabetes, hypertension, and in the aging population. However, there is a lack of adequate clinical treatment. Patients with obesity-related heart failure with preserved ejection fraction display unique pathophysiological and phenotypic characteristics, suggesting that obesity could be one of its specific phenotypes. There has been an increasing recognition that overnutrition in obesity causes adipose tissue expansion and local and systemic inflammation, which consequently exacerbates cardiac remodeling and leads to the development of obese heart failure with preserved ejection fraction. Furthermore, overnutrition leads to cellular metabolic reprogramming and activates inflammatory signaling cascades in various cardiac cells, thereby promoting maladaptive cardiac remodeling. Growing evidence indicates that the innate immune response pathway from the NLRP3 inflammasome, to interleukin-1 to interleukin-6, is involved in the generation of obesity-related systemic inflammation and heart failure with preserved ejection fraction. This review established the existence of obese heart failure with preserved ejection fraction based on structural and functional changes, elaborated the inflammation mechanisms of obese heart failure with preserved ejection fraction, proposed that NLRP3 inflammasome activation may play an important role in adiposity-induced inflammation, and summarized the potential therapeutic approaches.
Collapse
Affiliation(s)
- Chenyu Li
- Department of Cardiovascular Medicine, the Second Xiangya Hospital, Research Institute of Blood Lipid and Atherosclerosis, Central South University, Changsha, Hunan, China
| | - Donglu Qin
- Department of Cardiovascular Medicine, the Second Xiangya Hospital, Research Institute of Blood Lipid and Atherosclerosis, Central South University, Changsha, Hunan, China
| | - Jiarui Hu
- Department of Spine Surgery, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yang Yang
- Department of Cardiovascular Medicine, the Second Xiangya Hospital, Research Institute of Blood Lipid and Atherosclerosis, Central South University, Changsha, Hunan, China
| | - Die Hu
- Department of Cardiovascular Medicine, the Second Xiangya Hospital, Research Institute of Blood Lipid and Atherosclerosis, Central South University, Changsha, Hunan, China
| | - Bilian Yu
- Department of Cardiovascular Medicine, the Second Xiangya Hospital, Research Institute of Blood Lipid and Atherosclerosis, Central South University, Changsha, Hunan, China,*Correspondence: Bilian Yu,
| |
Collapse
|
12
|
Role of Nutrients and Foods in Attenuation of Cardiac Remodeling through Oxidative Stress Pathways. Antioxidants (Basel) 2022; 11:antiox11102064. [PMID: 36290787 PMCID: PMC9598077 DOI: 10.3390/antiox11102064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/14/2022] [Accepted: 10/17/2022] [Indexed: 12/03/2022] Open
Abstract
Cardiac remodeling is defined as a group of molecular, cellular, and interstitial changes that manifest clinically as changes in the heart’s size, mass, geometry, and function after different injuries. Importantly, remodeling is associated with increased risk of ventricular dysfunction and heart failure. Therefore, strategies to attenuate this process are critical. Reactive oxygen species and oxidative stress play critical roles in remodeling. Importantly, antioxidative dietary compounds potentially have protective properties against remodeling. Therefore, this review evaluates the role of nutrients and food as modulators of cardiac remodeling.
Collapse
|
13
|
Kajikawa M, Higashi Y. Obesity and Endothelial Function. Biomedicines 2022; 10:biomedicines10071745. [PMID: 35885049 PMCID: PMC9313026 DOI: 10.3390/biomedicines10071745] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/16/2022] [Accepted: 07/16/2022] [Indexed: 02/08/2023] Open
Abstract
Obesity is a major public health problem and is related to increasing rates of cardiovascular morbidity and mortality. Over 1.9 billion adults are overweight or obese worldwide and the prevalence of obesity is increasing. Obesity influences endothelial function through obesity-related complications such as hypertension, dyslipidemia, diabetes, metabolic syndrome, and obstructive sleep apnea syndrome. The excess fat accumulation in obesity causes adipocyte dysfunction and induces oxidative stress, insulin resistance, and inflammation leading to endothelial dysfunction. Several anthropometric indices and imaging modalities that are used to evaluate obesity have demonstrated an association between obesity and endothelial function. In the past few decades, there has been great focus on the mechanisms underlying endothelial dysfunction caused by obesity for the prevention and treatment of cardiovascular events. This review focuses on pathophysiological mechanisms of obesity-induced endothelial dysfunction and therapeutic targets of obesity.
Collapse
Affiliation(s)
- Masato Kajikawa
- Division of Regeneration and Medicine, Medical Center for Translational and Clinical Research, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan;
| | - Yukihito Higashi
- Division of Regeneration and Medicine, Medical Center for Translational and Clinical Research, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan;
- Department of Regenerative Medicine, Division of Radiation Medical Science, Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
- Correspondence: ; Tel.: +81-82-257-5831
| |
Collapse
|
14
|
Mechanisms underlying the effects of caloric restriction on hypertension. Biochem Pharmacol 2022; 200:115035. [DOI: 10.1016/j.bcp.2022.115035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/07/2022] [Accepted: 04/07/2022] [Indexed: 11/20/2022]
|
15
|
Calorie restriction changes lipidomic profiles and maintains mitochondrial function and redox balance during isoproterenol-induced cardiac hypertrophy. J Physiol Biochem 2022; 78:283-294. [PMID: 35023023 DOI: 10.1007/s13105-021-00863-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 12/01/2021] [Indexed: 10/19/2022]
Abstract
Typically, healthy cardiac tissue utilizes more fat than any other organ. Cardiac hypertrophy induces a metabolic shift leading to a preferential consumption of glucose over fatty acids to support the high energetic demand. Calorie restriction is a dietary procedure that induces health benefits and lifespan extension in many organisms. Given the beneficial effects of calorie restriction, we hypothesized that calorie restriction prevents cardiac hypertrophy, lipid content changes, mitochondrial and redox dysregulation. Strikingly, calorie restriction reversed isoproterenol-induced cardiac hypertrophy. Isolated mitochondria from hypertrophic hearts produced significantly higher levels of succinate-driven H2O2 production, which was blocked by calorie restriction. Cardiac hypertrophy lowered mitochondrial respiratory control ratios, and decreased superoxide dismutase and glutathione peroxidase levels. These effects were also prevented by calorie restriction. We performed lipidomic profiling to gain insights into how calorie restriction could interfere with the metabolic changes induced by cardiac hypertrophy. Calorie restriction protected against the consumption of several triglycerides (TGs) linked to unsaturated fatty acids. Also, this dietary procedure protected against the accumulation of TGs containing saturated fatty acids observed in hypertrophic samples. Cardiac hypertrophy induced an increase in ceramides, phosphoethanolamines, and acylcarnitines (12:0, 14:0, 16:0, and 18:0). These were all reversed by calorie restriction. Altogether, our data demonstrate that hypertrophy changes the cardiac lipidome, causes mitochondrial disturbances, and oxidative stress. These changes are prevented (at least partially) by calorie restriction intervention in vivo. This study uncovers the potential for calorie restriction to become a new therapeutic intervention against cardiac hypertrophy, and mechanisms in which it acts.
Collapse
|
16
|
de Souza AMA, Ecelbarger CM, Sandberg K. Caloric Restriction and Cardiovascular Health: the Good, the Bad, and the Renin-Angiotensin System. Physiology (Bethesda) 2021; 36:220-234. [PMID: 34159807 DOI: 10.1152/physiol.00002.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Much excitement exists over the cardioprotective and life-extending effects of caloric restriction (CR). This review integrates population studies with experimental animal research to address the positive and negative impact of mild and severe CR on cardiovascular physiology and pathophysiology, with a particular focus on the renin-angiotensin system (RAS). We also highlight the gaps in knowledge and areas ripe for future physiological research.
Collapse
Affiliation(s)
- Aline M A de Souza
- Division of Nephrology and Hypertension, Department of Medicine, Georgetown University, Washington, District of Columbia
| | - Carolyn M Ecelbarger
- Division of Nephrology and Hypertension, Department of Medicine, Georgetown University, Washington, District of Columbia
| | - Kathryn Sandberg
- Division of Nephrology and Hypertension, Department of Medicine, Georgetown University, Washington, District of Columbia
| |
Collapse
|
17
|
Abstract
Obese heart failure with preserved ejection fraction (HFpEF) is a distinct HFpEF phenotype. Sodium retention, high circulating neurohormone levels, alterations in energy substrate metabolism, group 3 pulmonary hypertension, pericardial restraint, and systemic inflammation are central pathophysiologic mechanisms. Confirming the diagnosis may be challenging and high suspicion is required. Reduction of visceral adipose tissue, via caloric restriction and/or bariatric surgery, may improve outcomes in obese HFpEF patients. Furthermore, mineralocorticoid receptor inhibition, neprilysin inhibition, and sodium-glucose cotransporter 2 inhibition can ameliorate the effects of adiposity on the cardiovascular system, allowing for promising new treatment targets for the obese HFpEF phenotype.
Collapse
Affiliation(s)
- Efstratios Koutroumpakis
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center, 6431 Fannin Street, MSB 1.220, Houston, TX 77030, USA
| | - Ramanjit Kaur
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center, 6431 Fannin Street, MSB 1.220, Houston, TX 77030, USA
| | - Heinrich Taegtmeyer
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School, The University of Texas Health Science Center, 6431 Fannin Street, MSB 1.220, Houston, TX 77030, USA
| | - Anita Deswal
- Department of Cardiology, University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.
| |
Collapse
|
18
|
Aroor AR, Mummidi S, Lopez-Alvarenga JC, Das N, Habibi J, Jia G, Lastra G, Chandrasekar B, DeMarco VG. Sacubitril/valsartan inhibits obesity-associated diastolic dysfunction through suppression of ventricular-vascular stiffness. Cardiovasc Diabetol 2021; 20:80. [PMID: 33882908 PMCID: PMC8061206 DOI: 10.1186/s12933-021-01270-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/15/2021] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE Cardiac diastolic dysfunction (DD) and arterial stiffness are early manifestations of obesity-associated prediabetes, and both serve as risk factors for the development of heart failure with preserved ejection fraction (HFpEF). Since the incidence of DD and arterial stiffness are increasing worldwide due to exponential growth in obesity, an effective treatment is urgently needed to blunt their development and progression. Here we investigated whether the combination of an inhibitor of neprilysin (sacubitril), a natriuretic peptide-degrading enzyme, and an angiotensin II type 1 receptor blocker (valsartan), suppresses DD and arterial stiffness in an animal model of prediabetes more effectively than valsartan monotherapy. METHODS Sixteen-week-old male Zucker Obese rats (ZO; n = 64) were assigned randomly to 4 different groups: Group 1: saline control (ZOC); Group 2: sacubitril/valsartan (sac/val; 68 mg•kg-1•day-1; ZOSV); Group 3: valsartan (31 mg•kg-1•day-1; ZOV) and Group 4: hydralazine, an anti-hypertensive drug (30 mg•kg-1•day-1; ZOH). Six Zucker Lean (ZL) rats that received saline only (Group 5) served as lean controls (ZLC). Drugs were administered daily for 10 weeks by oral gavage. RESULTS Sac/val improved echocardiographic parameters of impaired left ventricular (LV) stiffness in untreated ZO rats, without altering the amount of food consumed or body weight gained. In addition to improving DD, sac/val decreased aortic stiffness and reversed impairment in nitric oxide-induced vascular relaxation in ZO rats. However, sac/val had no impact on LV hypertrophy. Notably, sac/val was more effective than val in ameliorating DD. Although, hydralazine was as effective as sac/val in improving these parameters, it adversely affected LV mass index. Further, cytokine array revealed distinct effects of sac/val, including marked suppression of Notch-1 by both valsartan and sac/val, suggesting that cardiovascular protection afforded by both share some common mechanisms; however, sac/val, but not val, increased IL-4, which is increasingly recognized for its cardiovascular protection, possibly contributing, in part, to more favorable effects of sac/val over val alone in improving obesity-associated DD. CONCLUSIONS These studies suggest that sac/val is superior to val in reversing obesity-associated DD. It is an effective drug combination to blunt progression of asymptomatic DD and vascular stiffness to HFpEF development in a preclinical model of obesity-associated prediabetes.
Collapse
Affiliation(s)
- Annayya R Aroor
- Diabetes and Cardiovascular Center, University of Missouri School of Medicine, Columbia, MO, USA
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri-Columbia School of Medicine, D110, DC043.0 One Hospital Dr, Columbia, MO, 65212, USA
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA
| | - Srinivas Mummidi
- South Texas Diabetes and Obesity Institute, Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, USA
| | - Juan Carlos Lopez-Alvarenga
- South Texas Diabetes and Obesity Institute, Department of Human Genetics, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX, USA
| | - Nitin Das
- Department of Cardiothoracic Surgery, University of Texas Health Science Center, San Antonio, TX, USA
| | - Javad Habibi
- Diabetes and Cardiovascular Center, University of Missouri School of Medicine, Columbia, MO, USA
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri-Columbia School of Medicine, D110, DC043.0 One Hospital Dr, Columbia, MO, 65212, USA
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA
| | - Guanghong Jia
- Diabetes and Cardiovascular Center, University of Missouri School of Medicine, Columbia, MO, USA
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri-Columbia School of Medicine, D110, DC043.0 One Hospital Dr, Columbia, MO, 65212, USA
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA
| | - Guido Lastra
- Diabetes and Cardiovascular Center, University of Missouri School of Medicine, Columbia, MO, USA
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri-Columbia School of Medicine, D110, DC043.0 One Hospital Dr, Columbia, MO, 65212, USA
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA
| | - Bysani Chandrasekar
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA.
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri-Columbia School of Medicine, One Hospital Dr, Columbia, MO, 65212, USA.
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA.
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA.
| | - Vincent G DeMarco
- Diabetes and Cardiovascular Center, University of Missouri School of Medicine, Columbia, MO, USA.
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri-Columbia School of Medicine, D110, DC043.0 One Hospital Dr, Columbia, MO, 65212, USA.
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA.
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA.
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA.
| |
Collapse
|
19
|
Yan M, Sun S, Xu K, Huang X, Dou L, Pang J, Tang W, Shen T, Li J. Cardiac Aging: From Basic Research to Therapeutics. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9570325. [PMID: 33777324 PMCID: PMC7969106 DOI: 10.1155/2021/9570325] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 02/07/2021] [Accepted: 02/11/2021] [Indexed: 01/12/2023]
Abstract
With research progress on longevity, we have gradually recognized that cardiac aging causes changes in heart structure and function, including progressive myocardial remodeling, left ventricular hypertrophy, and decreases in systolic and diastolic function. Elucidating the regulatory mechanisms of cardiac aging is a great challenge for biologists and physicians worldwide. In this review, we discuss several key molecular mechanisms of cardiac aging and possible prevention and treatment methods developed in recent years. Insights into the process and mechanism of cardiac aging are necessary to protect against age-related diseases, extend lifespan, and reduce the increasing burden of cardiovascular disease in elderly individuals. We believe that research on cardiac aging is entering a new era of unique significance for the progress of clinical medicine and social welfare.
Collapse
Affiliation(s)
- Mingjing Yan
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
- Peking University Fifth School of Clinical Medicine, Beijing 100730, China
| | - Shenghui Sun
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Kun Xu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xiuqing Huang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Lin Dou
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jing Pang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Weiqing Tang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Tao Shen
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
- Peking University Fifth School of Clinical Medicine, Beijing 100730, China
| | - Jian Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
- Peking University Fifth School of Clinical Medicine, Beijing 100730, China
| |
Collapse
|
20
|
Preconditioning with Short-term Dietary Restriction Attenuates Cardiac Oxidative Stress and Hypertrophy Induced by Chronic Pressure Overload. Nutrients 2021; 13:nu13030737. [PMID: 33652586 PMCID: PMC7996575 DOI: 10.3390/nu13030737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 02/12/2021] [Accepted: 02/20/2021] [Indexed: 12/25/2022] Open
Abstract
Left ventricular (LV) hypertrophy and associated heart failure are becoming a more prevalent and critical public health issue with the aging of society, and are exacerbated by reactive oxygen species (ROS). Dietary restriction (DR) markedly inhibits senescent changes; however, prolonged DR is difficult. We herein investigated whether preconditioning with short-term DR attenuates chronic pressure overload-induced cardiac hypertrophy and associated oxidative stress. Male c57BL6 mice were randomly divided into an ad libitum (AL) diet or 40% restricted diet (DR preconditioning, DRPC) group for 2 weeks prior to ascending aortic constriction (AAC), and all mice were fed ad libitum after AAC surgery. Two weeks after surgery, pressure overload by AAC increased LV wall thickness in association with LV diastolic dysfunction and promoted myocyte hypertrophy and cardiac fibrosis in the AL+AAC group. Oxidative stress in cardiac tissue and mitochondria also increased in the AL+AAC group in association with increments in cardiac NADPH oxidase-derived and mitochondrial ROS production. LV hypertrophy and associated cardiac dysfunction and oxidative stress were significantly attenuated in the DRPC+AAC group. Moreover, less severe mitochondrial oxidative damage in the DRPC+AAC group was associated with the suppression of mitochondrial permeability transition and cardiac apoptosis. These results indicate that chronic pressure overload-induced cardiac hypertrophy in association with cardiac and mitochondrial oxidative damage were attenuated by preconditioning with short-term DR.
Collapse
|
21
|
Sciarretta S, Forte M, Castoldi F, Frati G, Versaci F, Sadoshima J, Kroemer G, Maiuri MC. Caloric restriction mimetics for the treatment of cardiovascular diseases. Cardiovasc Res 2020; 117:1434-1449. [PMID: 33098415 DOI: 10.1093/cvr/cvaa297] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 10/09/2020] [Indexed: 12/25/2022] Open
Abstract
Caloric restriction mimetics (CRMs) are emerging as potential therapeutic agents for the treatment of cardiovascular diseases. CRMs include natural and synthetic compounds able to inhibit protein acetyltransferases, to interfere with acetyl coenzyme A biosynthesis, or to activate (de)acetyltransferase proteins. These modifications mimic the effects of caloric restriction, which is associated with the activation of autophagy. Previous evidence demonstrated the ability of CRMs to ameliorate cardiac function and reduce cardiac hypertrophy and maladaptive remodelling in animal models of ageing, mechanical overload, chronic myocardial ischaemia, and in genetic and metabolic cardiomyopathies. In addition, CRMs were found to reduce acute ischaemia-reperfusion injury. In many cases, these beneficial effects of CRMs appeared to be mediated by autophagy activation. In the present review, we discuss the relevant literature about the role of different CRMs in animal models of cardiac diseases, emphasizing the molecular mechanisms underlying the beneficial effects of these compounds and their potential future clinical application.
Collapse
Affiliation(s)
- Sebastiano Sciarretta
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 40100 Latina, Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, Pozzilli (IS), Italy
| | - Maurizio Forte
- Department of AngioCardioNeurology, IRCCS Neuromed, Pozzilli (IS), Italy
| | - Francesca Castoldi
- Centre de Recherche des Cordeliers, Team "Metabolism, Cancer & Immunity", INSERM UMRS1138, Université de Paris, Sorbonne Université, 75006 Paris, France.,Cell Biology and Metabolomics platforms, Gustave Roussy Cancer Campus, 94805 Villejuif, France
| | - Giacomo Frati
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 40100 Latina, Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, Pozzilli (IS), Italy
| | - Francesco Versaci
- Division of Cardiology, S. Maria Goretti Hospital, 04100 Latina, Italy
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, 185 South Orange Avenue, G-609, Newark, NJ 07103, USA
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Team "Metabolism, Cancer & Immunity", INSERM UMRS1138, Université de Paris, Sorbonne Université, 75006 Paris, France.,Cell Biology and Metabolomics platforms, Gustave Roussy Cancer Campus, 94805 Villejuif, France.,Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France.,Suzhou Institute for Systems Medicine, Chinese Academy of Sciences, Suzhou Jiangsu 215163, China.,Department of Women's and Children's Health, Karolinska Institute, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Maria Chiara Maiuri
- Centre de Recherche des Cordeliers, Team "Metabolism, Cancer & Immunity", INSERM UMRS1138, Université de Paris, Sorbonne Université, 75006 Paris, France.,Cell Biology and Metabolomics platforms, Gustave Roussy Cancer Campus, 94805 Villejuif, France
| |
Collapse
|
22
|
Su X, Peng D. Emerging functions of adipokines in linking the development of obesity and cardiovascular diseases. Mol Biol Rep 2020; 47:7991-8006. [PMID: 32888125 DOI: 10.1007/s11033-020-05732-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 08/18/2020] [Indexed: 12/19/2022]
Abstract
Increasing evidence shows that obesity is the critical factor in shaping cardio-metabolic phenotypes. However, the pathogenic mechanisms remain incompletely clarified. According to the published reports, adipose tissue communicates with several diverse organs, such as heart, lungs, and kidneys through the secretion of various cytokines named adipokines. The adipocytes isolated from obese mice or humans are dysfunctional with aberrant production of pro-inflammatory adipokines, which subsequently induce both acute and chronic inflammatory reaction and facilitate the process of cardio-metabolic disorder complications. Furthermore, the microenvironment within adipose tissue under obese status also influence the secretion of adipokines. Recently, given that several important adipokines have been completely researched and causally involved in various diseases, we could make a conclusion that adipokines play an essential role in modulating the development of cardio-metabolic disorder diseases, whereas several novel adipokines continue to be explored and elucidated. In the present review, we summarized the current knowledge of the microenvironment of adipose tissue and the published mechanisms whereby adipocytes affects obesity and cardiovascular diseases. On the other hand, we also provide the evidence to elucidate the functions of adipokines in controlling and regulating the inflammatory reactions which contribute to obesity and cardiovascular disease.
Collapse
Affiliation(s)
- Xin Su
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Changsha, 410011, Hunan, China.,Department of Cardiology, The Xiamen Cardiovascular Hospital of Xiamen University, Xiamen, Fujian, China
| | - Daoquan Peng
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Changsha, 410011, Hunan, China.
| |
Collapse
|
23
|
Alleviation of salt-induced exacerbation of cardiac, renal, and visceral fat pathology in rats with metabolic syndrome by surgical removal of subcutaneous fat. Nutr Diabetes 2020; 10:28. [PMID: 32778644 PMCID: PMC7417575 DOI: 10.1038/s41387-020-00132-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES Evidence suggests that visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) should be considered as distinct types of white fat. Although VAT plays a key role in metabolic syndrome (MetS), the role of subcutaneous adipose tissue (SAT) has been unclear. DahlS.Z-Leprfa/Leprfa (DS/obese) rats, an animal model of MetS, develop adipocyte hypertrophy and inflammation to similar extents in SAT and VAT. We have now investigated the effects of salt loading and SAT removal on cardiac, renal, and VAT pathology in DS/obese rats. METHODS DS/obese rats were subjected to surgical removal of inguinal SAT or sham surgery at 8 weeks of age. They were provided with a 0.3% NaCl solution as drinking water or water alone for 4 weeks from 9 weeks of age. RESULTS Salt loading exacerbated hypertension, insulin resistance, as well as left ventricular (LV) hypertrophy, inflammation, fibrosis, and diastolic dysfunction in DS/obese rats. It also reduced both SAT and VAT mass but aggravated inflammation only in VAT. Although SAT removal did not affect LV hypertrophy in salt-loaded DS/obese rats, it attenuated hypertension, insulin resistance, and LV injury as well as restored fat mass and alleviated inflammation and the downregulation of adiponectin gene expression in VAT. In addition, whereas salt loading worsened renal injury as well as upregulated the expression of renin-angiotensin-aldosterone system-related genes in the kidney, these effects were suppressed by removal of SAT. CONCLUSIONS SAT removal attenuated salt-induced exacerbation of MetS and LV and renal pathology in DS/obese rats. These beneficial effects of SAT removal are likely attributable, at least in part, to inhibition of both VAT and systemic inflammation.
Collapse
|
24
|
Bianchi VE. Caloric restriction in heart failure: A systematic review. Clin Nutr ESPEN 2020; 38:50-60. [PMID: 32690177 DOI: 10.1016/j.clnesp.2020.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 04/17/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND AIMS Nutrition exerts a determinant role in maintaining cardiac function, regulating insulin and mitochondrial efficiency, that are essential to support energy production for contractility. In patients with heart failure (HF), myocardial tissue efficiency is reduced because of decreased mitochondrial oxidative capacity. In HF conditions, cardiomyocytes shift toward glucose and a reduction in fatty acid utilization. Calorie restriction induces weight loss in obese patients and can be beneficial in some HF patients, although this has generated some controversy. This study aims to evaluate the impact of the CR diet on myocardial efficiency in HF patients. METHODS On Pubmed and Embase, articles related to the keywords: "chronic heart failure" with "diet," "nutrition," "insulin resistance," and "caloric restriction" have been searched, Studies, including exercise or food supplementation, were excluded. RESULTS The retrieved articles showed that weight loss, through the activation of insulin and various kinase pathways, regulates the efficiency of myocardial tissue. In contrast, insulin resistance represents a strong cardiovascular risk factor that reduces myocardial function. CONCLUSION CR diet represents the first therapy in overweight HF patients, both with preserved ejection fraction (HFpEF) and with reduced ejection fraction (HFrHF) because reducing body fat, the myocardial function increased. Insulin activity is the critical hormone that regulates mitochondrial function and cardiac efficiency. However, a severely restricted diet may represent a severe risk factor correlated with all-cause mortality, particularly in underweight HF patients. Long-term studies conducted on large populations are necessary to evaluate the effects of CR on myocardial function in HF patients.
Collapse
|
25
|
Koutroumpakis E, Jozwik B, Aguilar D, Taegtmeyer H. Strategies of Unloading the Failing Heart from Metabolic Stress. Am J Med 2020; 133:290-296. [PMID: 31520618 PMCID: PMC7054139 DOI: 10.1016/j.amjmed.2019.08.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 02/06/2023]
Abstract
We propose a unifying perspective of heart failure in patients with type 2 diabetes mellitus. The reasoning is as follows: cellular responses to fuel overload include dysregulated insulin signaling, impaired mitochondrial respiration, reactive oxygen species formation, and the accumulation of certain metabolites, collectively termed glucolipotoxicity. As a consequence, cardiac function is impaired, with intracellular calcium cycling and diastolic dysfunction as an early manifestation. In this setting, increasing glucose uptake by insulin or insulin sensitizing agents only worsens the disrupted fuel homeostasis of the heart. Conversely, restricting fuel supply by means of caloric restriction, surgical intervention, or certain pharmacologic agents will improve cardiac function by restoring metabolic homeostasis. The concept is borne out by clinical interventions, all of which unload the heart from metabolic stress.
Collapse
Affiliation(s)
- Efstratios Koutroumpakis
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School at The University of Texas Health Science Center at Houston
| | - Bartosz Jozwik
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School at The University of Texas Health Science Center at Houston
| | - David Aguilar
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School at The University of Texas Health Science Center at Houston
| | - Heinrich Taegtmeyer
- Division of Cardiology, Department of Internal Medicine, McGovern Medical School at The University of Texas Health Science Center at Houston.
| |
Collapse
|
26
|
Badreh F, Joukar S, Badavi M, Rashno M. Restoration of the Renin-Angiotensin System Balance Is a Part of the Effect of Fasting on Cardiovascular Rejuvenation: Role of Age and Fasting Models. Rejuvenation Res 2019; 23:302-312. [PMID: 31571520 DOI: 10.1089/rej.2019.2254] [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] [Indexed: 02/06/2023] Open
Abstract
Intermittent fasting (IF) is an intervention that can be beneficial for health span and mitigate the risk of developing age-related cardiovascular diseases; however, the involved mechanisms are not well understood. The present study investigated the effects of IF regimens on the plasma level of angiotensin II (Ang II), and the expression of Ang II receptors (AT1aR and AT2R) and angiotensin-converting enzyme 2 (ACE2) in the heart and aorta of male, 3-, 12-, and 24-month-old Wistar rats fed ad libitum (AL), fed ad libitum and fasted 1 day per week (FW), or fasted every other day (EOD) for 3 months. Aging was associated with high circulating levels of Ang II, high level of AT1aR protein expression in the heart and aorta, and low level of AT2R protein expression in the heart and aorta. Both FW and EOD decreased Ang II levels (p < 0.01, p < 0.001) and AT1aR protein expression in the heart (p < 0.01, p < 0.001) and aorta (p < 0.001) of old rats. Both FW and EOD increased the expression of AT2R protein in the heart (p < 0.05 and p < 0.001, respectively). However, only EOD increased the expression of AT2R protein (p < 0.05) in the aorta. In the old group, both the FW and EOD regimens induced a significant increase in the expression of ACE2 protein in the heart (p < 0.01, p < 0.001 vs. age-matched AL group, respectively). The results suggest that a part of the recovery effect of fasting on cardiovascular system in old rats is mediated through restoration of the balance of renin-angiotensin system.
Collapse
Affiliation(s)
- Firuzeh Badreh
- Physiology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran.,Department of Physiology and Pharmacology, Afzalipour Faculty of Medicine, Kerman University of Medical Science, Kerman, Iran
| | - Siyavash Joukar
- Neuroscience Research Center, Cardiovascular Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran.,Cardiovascular Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Badavi
- Department of Physiology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,The Persian Gulf Physiology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Rashno
- Department of Immunology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| |
Collapse
|
27
|
Cardiac inflammation and diastolic dysfunction in hypercholesterolemic rabbits. PLoS One 2019; 14:e0220707. [PMID: 31393963 PMCID: PMC6687122 DOI: 10.1371/journal.pone.0220707] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 07/22/2019] [Indexed: 01/01/2023] Open
Abstract
Background Left ventricular diastolic dysfunction (LVDD) is present in more than 50% of patients suffering from heart failure. LVDD animal models are limited and its underlying mechanisms remain largely unknown. Aortic valve stenosis (AVS) may cause LVDD, and we recently reported LVDD in an AVS rabbit model. Here we aimed to develop a rabbit model of LVDD without AVS. Methods Rabbits were fed with a 0.5% cholesterol-enriched diet (n = 9) or normal diet (n = 8) until they developed LVDD defined by a value of the echocardiographic parameter E/Em ratio higher than the mean at baseline + 2SD. Rabbits were then fed a 0.2% cholesterol-enriched diet for 4 weeks (average total diet duration: 20 weeks). Detailed cardiac structure and function measurements were assessed by echocardiography at baseline, weeks 8, 12 and 14 to 20, when applicable. Histological analyses and RT-qPCR were performed on LV samples. Results The hypercholesterolemic diet induced LVDD without systolic dysfunction or AVS, as shown by multiple echocardiographic parameters, including early filling mitral peak velocity and deceleration rate, Em/Am ratio and E/Em ratio (all p<0.05), and by increased cardiac mRNA expression of brain natriuretic peptide (Bnp). Cardiac expression of mRNA for Nox2, Vcam1, Mmp12, Mmp12/Timp1, Il1b and Col1/Col3 ratios was also higher in these rabbits (p<0.05). In contrast, cardiac Sod2 mRNA expression was reduced in hypercholesterolemic rabbits compared to controls. Conclusion Rabbits fed with a cholesterol-enriched diet develop LVDD with preserved systolic function and evidence of cardiac inflammation and oxidative stress. This rabbit model may be used in future studies to test treatment strategies against LVDD.
Collapse
|
28
|
García-Prieto CF, Gil-Ortega M, Plaza A, Manzano-Lista FJ, González-Blázquez R, Alcalá M, Rodríguez-Rodríguez P, Viana M, Aránguez I, Gollasch M, Somoza B, Fernández-Alfonso MS. Caloric restriction induces H 2O 2 formation as a trigger of AMPK-eNOS-NO pathway in obese rats: Role for CAMKII. Free Radic Biol Med 2019; 139:35-45. [PMID: 31100477 DOI: 10.1016/j.freeradbiomed.2019.05.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/13/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023]
Abstract
Caloric restriction (CR) improves endothelial function through the upregulation of adenosine monophosphate-activated protein kinase (AMPK) and endothelial nitric oxide synthase (eNOS). Moreover, hydrogen peroxide (H2O2) is upregulated in yeast subjected to CR. Our aim was to assess if mild short-term CR increases vascular H2O2 formation as a link with AMPK and eNOS activation. Twelve-week old Zucker obese (fa/fa) and control Zucker lean male rats were fed a standard chow either ad libitum (AL, n=10) or with a 20% CR (CR, n=10) for two weeks. CR significantly improved relaxation to ACh in fa/fa rats because of an enhanced endogenous production of H2O2 in aortic rings (H2O2 levels fa/faAL=0.5 ± 0.05 nmol/mg vs. H2O2 levels fa/faCR=0.76 ± 0.07 nmol/mg protein; p<0.05). Expression of mitochondrial superoxide dismutase (Mn-SOD) and total SOD activity were increased in aorta from fa/fa animals after CR. In cultured aortic endothelial cells, serum deprivation or 2-deoxy-d-glucose induced a significant increase in: i) superoxide anion and H2O2 levels, ii) p-AMPK/AMPK and p-eNOS/eNOS expression and iii) nitric oxide levels. This effect was reduced by catalase and strongly inhibited by Ca2+/calmodulin-dependent kinase II (CamkII) silencing. In conclusion, we propose that mild short-term CR might be a trigger of mechanisms aimed at protecting the vascular wall by the increase of H2O2, which then activates AMPK and nitric oxide release, thus improving endothelium-dependent relaxation. In addition, we demonstrate that CAMKII plays a key role in mediating CR-induced AMPK activation through H2O2 increase.
Collapse
Affiliation(s)
- Concha F García-Prieto
- Departamento de Ciencias Farmacéuticas y de La Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28925, Madrid, Spain
| | - Marta Gil-Ortega
- Departamento de Ciencias Farmacéuticas y de La Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28925, Madrid, Spain
| | - Adrián Plaza
- Departamento de Ciencias Farmacéuticas y de La Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28925, Madrid, Spain
| | - F J Manzano-Lista
- Instituto Pluridisciplinar and Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense, Madrid, Spain
| | - Raquel González-Blázquez
- Departamento de Ciencias Farmacéuticas y de La Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28925, Madrid, Spain
| | - Martín Alcalá
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28925, Madrid, Spain
| | | | - Marta Viana
- Departamento de Química y Bioquímica, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28925, Madrid, Spain
| | - Isabel Aránguez
- Instituto Pluridisciplinar and Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad Complutense, Madrid, Spain
| | - Maik Gollasch
- Experimental and Clinical Research Center, Charité - University Medicine Berlin and the Max Delbrück Center for Molecular Medicine Berlin, Germany
| | - Beatriz Somoza
- Departamento de Ciencias Farmacéuticas y de La Salud, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, 28925, Madrid, Spain
| | - María S Fernández-Alfonso
- Instituto Pluridisciplinar and Departamento de Farmacología, Facultad de Farmacia, Universidad Complutense, Madrid, Spain.
| |
Collapse
|
29
|
Karwi QG, Zhang L, Altamimi TR, Wagg CS, Patel V, Uddin GM, Joerg AR, Padwal RS, Johnstone DE, Sharma A, Oudit GY, Lopaschuk GD. Weight loss enhances cardiac energy metabolism and function in heart failure associated with obesity. Diabetes Obes Metab 2019; 21:1944-1955. [PMID: 31050157 DOI: 10.1111/dom.13762] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/23/2019] [Accepted: 04/30/2019] [Indexed: 01/06/2023]
Abstract
AIMS Obesity is associated with high rates of cardiac fatty acid oxidation, low rates of glucose oxidation, cardiac hypertrophy and heart failure. Whether weight loss can lessen the severity of heart failure associated with obesity is not known. We therefore determined the effect of weight loss on cardiac energy metabolism and the severity of heart failure in obese mice with heart failure. MATERIALS AND METHODS Obesity and heart failure were induced by feeding mice a high-fat (HF) diet and subjecting them to transverse aortic constriction (TAC). Obese mice with heart failure were then switched for 8 weeks to either a low-fat (LF) diet (HF TAC LF) or caloric restriction (CR) (40% caloric intake reduction, HF TAC CR) to induce weight loss. RESULTS Weight loss improved cardiac function (%EF was 38 ± 6% and 36 ± 6% in HF TAC LF and HF TAC CR mice vs 25 ± 3% in HF TAC mice, P < 0.05) and it decreased cardiac hypertrophy post TAC (left ventricle mass was 168 ± 7 and 171 ± 10 mg in HF TAC LF and HF TAC CR mice, respectively, vs 210 ± 8 mg in HF TAC mice, P < 0.05). Weight loss enhanced cardiac insulin signalling, insulin-stimulated glucose oxidation rates (1.5 ± 0.1 and 1.5 ± 0.1 μmol/g dry wt/min in HF TAC LF and HF TAC CR mice, respectively, vs 0.2 ± 0.1 μmol/g dry wt/min in HF TAC mice, P < 0.05) and it decreased pyruvate dehydrogenase phosphorylation. Cardiac fatty acid oxidation rates, AMPKTyr172 /ACCSer79 signalling and the acetylation of ß-oxidation enzymes, were attenuated following weight loss. CONCLUSIONS Weight loss is an effective intervention to improve cardiac function and energy metabolism in heart failure associated with obesity.
Collapse
Affiliation(s)
- Qutuba G Karwi
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
- Department of Pharmacology, College of Medicine, University of Diyala, Diyala, Iraq
| | - Liyan Zhang
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Tariq R Altamimi
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Cory S Wagg
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Vaibhav Patel
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Golam M Uddin
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Alice R Joerg
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Raj S Padwal
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - David E Johnstone
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Arya Sharma
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Gavin Y Oudit
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Gary D Lopaschuk
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
30
|
Takasu T, Takakura S. Effect of ipragliflozin, an SGLT2 inhibitor, on cardiac histopathological changes in a non-diabetic rat model of cardiomyopathy. Life Sci 2019; 230:19-27. [PMID: 31125563 DOI: 10.1016/j.lfs.2019.05.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/14/2019] [Accepted: 05/20/2019] [Indexed: 01/14/2023]
Abstract
AIMS We investigated the effect of the selective sodium-dependent glucose cotransporter 2 (SGLT2) inhibitor ipragliflozin on cardiac dysfunction and histopathology in a non-diabetic rat model of cardiomyopathy. MAIN METHODS Ipragliflozin was mixed with chow (0.01%, w/w) and administered to male DahlS.Z-Leprfa/Leprfa (DS/obese) rats for 8 weeks. Male DahlS.Z-Lepr+/Lepr+ (DS/lean) rats of the same age were used as controls. Systolic blood pressure (SBP) and heart rate (HR) were measured every 4 weeks. After 8 weeks of treatment, echocardiography and histopathological examinations were performed. Further, the effect of ipragliflozin on blood and urine parameters were investigated. KEY FINDINGS In the DS/obese rats, ipragliflozin delayed the age-related increase in SBP without affecting HR, reduced left ventricular (LV) mass and intraventricular septal thickness in echocardiography, and ameliorated hypertrophy of cardiomyocytes and LV fibrosis in histopathological examination. Although ipragliflozin significantly increased both urine volume and urinary glucose excretion in DS/obese rats, it did not alter plasma glucose levels. SIGNIFICANCE Ipragliflozin prevented LV hypertrophy and fibrosis in non-diabetic DS/obese rats without affecting plasma glucose levels. These findings suggest that SGLT2 inhibitors have a cardio-protective effect in non-diabetic patients with cardiomyopathy.
Collapse
Affiliation(s)
- Toshiyuki Takasu
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba-shi, Ibaraki, Japan.
| | - Shoji Takakura
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba-shi, Ibaraki, Japan
| |
Collapse
|
31
|
Camelo L, Marinho TDS, Águila MB, Souza-Mello V, Barbosa-da-Silva S. Intermittent fasting exerts beneficial metabolic effects on blood pressure and cardiac structure by modulating local renin-angiotensin system in the heart of mice fed high-fat or high-fructose diets. Nutr Res 2018; 63:51-62. [PMID: 30824397 DOI: 10.1016/j.nutres.2018.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 11/01/2018] [Accepted: 12/07/2018] [Indexed: 02/09/2023]
Abstract
Intermittent fasting (IF) sets the preference for fats as fuel and is linked to beneficial metabolic outcomes; however, the effects in the renin-angiotensin system (RAS) in the heart remains to be determined. We hypothesized that IF improves blood pressure and lipid profiles due to a less activated local RAS in the left ventricle of mice, irrespective of the dietary scheme. This study aimed to evaluate the effects of intermittent fasting on cardiovascular parameters and local RAS in the left ventricle (LV) of mice fed either a high-fat (HF) or high-fructose diet (HFru). Metabolic alterations were induced in C57BL/6 mice by providing them free access to a high-fat or a high-fructose (HFru) diet for 8 weeks. Following the 8-week metabolic alteration period, the mice were subjected to the IF protocol in which mice were deprived of food for 24 hours, every other day, for a period of 4 weeks. The IF protocol caused significant reduction in body weight, systolic blood pressure, blood glucose, total cholesterol, and triacylglycerol levels, in addition to augmenting the plasma and urinary uric acid levels, irrespective of the diet. Post IF protocol, beneficial LV remodeling was observed in animals fed either diet and included reduced LV mass, thickness, and cardiomyocyte cross-sectional area. These results comply with the improved RAS modulation, which favored ACE2/MAS receptor axis over the renin/ACE/AT1 axis. In conclusion, the significant decrease in weight brought about as a result of the IF protocol lead to modulation of the local RAS, with the consequential benefit of LV remodeling and reduction in blood pressure, irrespective of the diet.
Collapse
Affiliation(s)
- Luana Camelo
- Institute of Biology, State University of Rio de Janeiro, RJ, Brazil
| | | | | | | | | |
Collapse
|
32
|
McPherson KC, Shields CA, Poudel B, Fizer B, Pennington A, Szabo-Johnson A, Thompson WL, Cornelius DC, Williams JM. Impact of obesity as an independent risk factor for the development of renal injury: implications from rat models of obesity. Am J Physiol Renal Physiol 2018; 316:F316-F327. [PMID: 30539649 DOI: 10.1152/ajprenal.00162.2018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Diabetes and hypertension are the major causes of chronic kidney disease (CKD). Epidemiological studies within the last few decades have revealed that obesity-associated renal disease is an emerging epidemic and that the increasing prevalence of obesity parallels the increased rate of CKD. This has led to the inclusion of obesity as an independent risk factor for CKD. A major complication when studying the relationship between obesity and renal injury is that cardiovascular and metabolic disorders that may result from obesity including hyperglycemia, hypertension, and dyslipidemia, or the cluster of these disorders [defined as the metabolic syndrome, (MetS)] also contribute to the development and progression of renal disease. The associations between hyperglycemia and hypertension with renal disease have been reported extensively in patients suffering from obesity. Currently, there are several obese rodent models (high-fat diet-induced obesity and leptin signaling dysfunction) that exhibit characteristics of MetS. However, the available obese rodent models currently have not been used to investigate the impact of obesity alone on the development of renal injury before hypertension and/or hyperglycemia. Therefore, the aim of this review is to describe the incidence and severity of renal disease in these rodent models of obesity and determine which models are suitable to study the independent effects obesity on the development and progression of renal disease.
Collapse
Affiliation(s)
- Kasi C McPherson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Corbin A Shields
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Bibek Poudel
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Brianca Fizer
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Alyssa Pennington
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Ashley Szabo-Johnson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Willie L Thompson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Denise C Cornelius
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi.,Department of Emergency Medicine, University of Mississippi Medical Center , Jackson, Mississippi
| | - Jan M Williams
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| |
Collapse
|
33
|
Calorie restriction attenuates hypertrophy-induced redox imbalance and mitochondrial ATP-sensitive K+ channel repression. J Nutr Biochem 2018; 62:87-94. [DOI: 10.1016/j.jnutbio.2018.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/12/2018] [Accepted: 08/16/2018] [Indexed: 12/12/2022]
|
34
|
Andreasen LJ, Krog S, Ludvigsen TP, Nielsen OL, Møller JE, Christoffersen BØ, Pedersen HD, Olsen LH. Dietary normalization from a fat, fructose and cholesterol-rich diet to chow limits the amount of myocardial collagen in a Göttingen Minipig model of obesity. Nutr Metab (Lond) 2018; 15:64. [PMID: 30263039 PMCID: PMC6157063 DOI: 10.1186/s12986-018-0303-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 09/17/2018] [Indexed: 02/07/2023] Open
Abstract
Background Dietary interventions have been shown to attenuate some of the myocardial pathological alterations associated with obesity. This study evaluated the effect of dietary normalization from a fat/fructose/cholesterol-rich diet to chow on left ventricular (LV) myocardial fibrosis, fat infiltration and hypertrophy but also the specific influence of obesity, plasma lipids and glucose metabolism markers on heart morphology in a Göttingen Minipig model of obesity. Methods Forty castrated male Göttingen Minipigs were assigned to three groups fed either standard minipig chow (SD, n = 8) for 13 months, fat/fructose/cholesterol-rich diet (FFC, n = 16) for 13 months or fat/fructose/cholesterol-rich diet for 7 months and then changed to standard minipig chow for the remaining 6 months (FFC/SD, n = 16). Body weight, body fat percentage, plasma lipids and glucose metabolism markers were evaluated in all three groups after 6–7 months (prior to diet adjustment for FFC/SD) and again before termination. Further, biochemical quantification of myocardial collagen and triglyceride content, semi-quantitative histological evaluation of fibrosis and fat infiltration and quantitative histological analysis of collagen and cardiomyocyte diameter were performed and heart weight was obtained after termination. Group differences were evaluated using Kruskal-Wallis test and Fisher’s exact test for categorical variables. Pearson correlation analysis was performed to test for correlations between myocardial changes and selected explanatory variables. For non-parametric response variables, a Spearman correlation analysis was applied. Results Myocardial collagen content quantified biochemically was significantly lower in FFC/SD compared to FFC (P = 0.02). Furthermore, dietary normalization from a fat/fructose/cholesterol-rich diet to chow caused stagnation of body weight and body fat percentage, normalized intravenous glucose tolerance index (KG) and plasma lipid levels. Conclusion Dietary normalization led to lower LV collagen content in obese Göttingen Minipigs. Despite gross obesity and significant deteriorations in glucose and lipid metabolism, only mild myocardial changes were found in this model of obesity and therefore further model optimization is warranted in order to induce more severe myocardial changes before dietary or pharmacological interventions.
Collapse
Affiliation(s)
- Laura Jul Andreasen
- 1Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870 Frederiksberg, Denmark
| | - Simone Krog
- 1Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870 Frederiksberg, Denmark
| | - Trine Pagh Ludvigsen
- Global Drug Discovery, Novo Nordisk A/S, Novo Nordisk Park 1, 2760 Måløv, Denmark
| | - Ole Lerberg Nielsen
- 1Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870 Frederiksberg, Denmark
| | - Jacob Eifer Møller
- 3Department of Cardiology, Odense University Hospital, Sdr Boulevard 29, 5000 Odense C, Denmark
| | | | - Henrik Duelund Pedersen
- 1Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870 Frederiksberg, Denmark.,Ellegaard Göttingen Minipigs, Soroe Landevej 302, 4261 Dalmose, Denmark
| | - Lisbeth Høier Olsen
- 1Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1870 Frederiksberg, Denmark
| |
Collapse
|
35
|
Homma T, Homma M, Huang Y, Mayurasakorn K, Rodi NM, Hamid AAA, Hurwitz S, Yao T, Adler GK, Pojoga LH, Williams GH, Romero JR. Combined Salt and Caloric Restrictions: Potential Adverse Outcomes. J Am Heart Assoc 2017; 6:JAHA.116.005374. [PMID: 29021272 PMCID: PMC5721821 DOI: 10.1161/jaha.116.005374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background We hypothesized that caloric restriction (CR) and salt restriction (ResS) would have similar effects on reducing cardiovascular risk markers and that combining CR and ResS would be synergistic in modulating these markers. Methods and Results To test our hypothesis, rats were randomized into 2 groups: ad libitum liberal salt diet (ad libitum/high‐sodium, 1.6% sodium) or ResS diet (ad libitum/ResS, 0.03% sodium). CR was initiated in half of the rats in each group by reducing caloric intake to 60% while maintaining sodium intake constant (CR/high‐sodium, 2.7% sodium or CR/ResS, 0.05% sodium) for 4 weeks. CR in rats on a high‐sodium diet improved metabolic parameters, renal transforming growth factor‐β and collagen‐1α1 and increased plasma adiponectin and renal visfatin and NAD+ protein levels. Although CR produced some beneficial cardiovascular effects (increased sodium excretion and reduced blood pressure), it also was associated with potentially adverse cardiovascular effects. Adrenal zona glomerulosa cell responsiveness and aldosterone levels and activation were inappropriately increased for the volume state of the rodent. Like CR on HS, CR on a ResS diet also produced relative increased zona glomerulosa responsiveness and an increased blood pressure with no improvement in metabolic parameters. Conclusions These results suggest that combining CR and ResS may decrease the beneficial effects of each alone. Furthermore, CR, regardless of dietary salt intake, inappropriately activates aldosterone production. Thus, caution should be used in combining ResS and CR because the combination may lead to increased cardiovascular risk.
Collapse
Affiliation(s)
- Tsuyoshi Homma
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Mika Homma
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Yuefei Huang
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Korapat Mayurasakorn
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Nurul Mahamad Rodi
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | | | - Shelley Hurwitz
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Tham Yao
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Gail K Adler
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Luminita H Pojoga
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Gordon H Williams
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| | - Jose R Romero
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Boston, MA
| |
Collapse
|
36
|
Uchinaka A, Yoneda M, Yamada Y, Murohara T, Nagata K. Effects of mTOR inhibition on cardiac and adipose tissue pathology and glucose metabolism in rats with metabolic syndrome. Pharmacol Res Perspect 2017; 5. [PMID: 28805979 PMCID: PMC5684863 DOI: 10.1002/prp2.331] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 05/18/2017] [Indexed: 12/12/2022] Open
Abstract
The mammalian target of rapamycin (mTOR) is a regulator of metabolism and is implicated in pathological conditions such as obesity and diabetes. We aimed to investigate the role of mTOR in obesity. A new animal model of metabolic syndrome (MetS), named DahlS.Z-Leprfa /Leprfa (DS/obese) rats was established previously in our laboratory. In this study, we used this model to evaluate the effects of mTOR inhibition on cardiac and adipose tissue pathology and glucose metabolism. DS/obese rats were treated with the mTOR inhibitor, everolimus, (0.83 mg/kg per day, per os) for 4 weeks at 9 weeks of age. Age-matched homozygous lean (DahlS.Z-Lepr+ /Lepr+ or DS/lean) littermates of DS/obese rats were used as controls. Treatment with everolimus ameliorated hypertension, left ventricular (LV) hypertrophy and fibrosis, and LV diastolic dysfunction, and attenuated cardiac oxidative stress and inflammation in DS/obese rats, but had no effect on these parameters in DS/lean rats. Treatment with everolimus reduced Akt Thr308 phosphorylation in the heart of DS/obese rats. It also alleviated obesity, hyperphagia, adipocyte hypertrophy, and adipose tissue inflammation in DS/obese rats. Everolimus treatment exacerbated glucose intolerance, but did not affect Akt phosphorylation levels in the fat or liver in these rats. Pancreatic β-cell mass was increased in DS/obese rats compared with that in DS/lean rats and this effect was attenuated by everolimus. Activation of mTOR signaling contributes to the pathophysiology of MetS and its associated complications. And mTOR inhibition with everolimus ameliorated obesity as well as cardiac and adipose tissue pathology, but exacerbated glucose metabolism in rats with MetS.
Collapse
Affiliation(s)
- Ayako Uchinaka
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mamoru Yoneda
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuichiro Yamada
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kohzo Nagata
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
37
|
Muralimanoharan S, Li C, Nakayasu ES, Casey CP, Metz TO, Nathanielsz PW, Maloyan A. Sexual dimorphism in the fetal cardiac response to maternal nutrient restriction. J Mol Cell Cardiol 2017. [PMID: 28641979 DOI: 10.1016/j.yjmcc.2017.06.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Poor maternal nutrition causes intrauterine growth restriction (IUGR); however, its effects on fetal cardiac development are unclear. We have developed a baboon model of moderate maternal undernutrition, leading to IUGR. We hypothesized that the IUGR affects fetal cardiac structure and metabolism. Six control pregnant baboons ate ad-libitum (CTRL)) or 70% CTRL from 0.16 of gestation (G). Fetuses were euthanized at C-section at 0.9G under general anesthesia. Male but not female IUGR fetuses showed left ventricular fibrosis inversely correlated with birth weight. Expression of extracellular matrix protein TSP-1 was increased (p<0.05) in male IUGR. Expression of cardiac fibrotic markers TGFβ, SMAD3 and ALK-1 were downregulated in male IUGRs with no difference in females. Autophagy was present in male IUGR evidenced by upregulation of ATG7 expression and lipidation LC3B. Global miRNA expression profiling revealed 56 annotated and novel cardiac miRNAs exclusively dysregulated in female IUGR, and 38 cardiac miRNAs were exclusively dysregulated in males (p<0.05). Fifteen (CTRL) and 23 (IUGR) miRNAs, were differentially expressed between males and females (p<0.05) suggesting sexual dimorphism, which can be at least partially explained by differential expression of upstream transcription factors (e.g. HNF4α, and NFκB p50). Lipidomics analysis of fetal cardiac tissue exhibited a net increase in diacylglycerol and plasmalogens and a decrease in triglycerides and phosphatidylcholines. In summary, IUGR resulting from decreased maternal nutrition is associated with sex-dependent dysregulations in cardiac structure, miRNA expression, and lipid metabolism. If these changes persist postnatally, they may program offspring for higher later life cardiac risk.
Collapse
Affiliation(s)
- Sribalasubashini Muralimanoharan
- Center for Pregnancy and Newborn Research, Department of Obstetrics and Gynecology, The University of Texas Health Science Center, San Antonio, TX 78229, USA; Department of Biochemistry, UT Southwestern Medical Center at Dallas, Dallas, TX 75390-9038, USA
| | - Cun Li
- Center for Pregnancy and Newborn Research, Department of Obstetrics and Gynecology, The University of Texas Health Science Center, San Antonio, TX 78229, USA; College of Agriculture and Natural Resources, University of Wyoming, Laramie, Wyoming 82071, USA
| | - Ernesto S Nakayasu
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Cameron P Casey
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Thomas O Metz
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Peter W Nathanielsz
- Center for Pregnancy and Newborn Research, Department of Obstetrics and Gynecology, The University of Texas Health Science Center, San Antonio, TX 78229, USA; College of Agriculture and Natural Resources, University of Wyoming, Laramie, Wyoming 82071, USA
| | - Alina Maloyan
- Center for Pregnancy and Newborn Research, Department of Obstetrics and Gynecology, The University of Texas Health Science Center, San Antonio, TX 78229, USA; Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon 97239, USA.
| |
Collapse
|
38
|
Botchlett R, Woo SL, Liu M, Pei Y, Guo X, Li H, Wu C. Nutritional approaches for managing obesity-associated metabolic diseases. J Endocrinol 2017; 233:R145-R171. [PMID: 28400405 PMCID: PMC5511693 DOI: 10.1530/joe-16-0580] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 04/11/2017] [Indexed: 01/10/2023]
Abstract
Obesity is an ongoing pandemic and serves as a causal factor of a wide spectrum of metabolic diseases including diabetes, fatty liver disease, and cardiovascular disease. Much evidence has demonstrated that nutrient overload/overnutrition initiates or exacerbates inflammatory responses in tissues/organs involved in the regulation of systemic metabolic homeostasis. This obesity-associated inflammation is usually at a low-grade and viewed as metabolic inflammation. When it exists continuously, inflammation inappropriately alters metabolic pathways and impairs insulin signaling cascades in peripheral tissues/organs such as adipose tissue, the liver and skeletal muscles, resulting in local fat deposition and insulin resistance and systemic metabolic dysregulation. In addition, inflammatory mediators, e.g., proinflammatory cytokines, and excessive nutrients, e.g., glucose and fatty acids, act together to aggravate local insulin resistance and form a vicious cycle to further disturb the local metabolic pathways and exacerbate systemic metabolic dysregulation. Owing to the critical role of nutrient metabolism in controlling the initiation and progression of inflammation and insulin resistance, nutritional approaches have been implicated as effective tools for managing obesity and obesity-associated metabolic diseases. Based on the mounting evidence generated from both basic and clinical research, nutritional approaches are commonly used for suppressing inflammation, improving insulin sensitivity, and/or decreasing fat deposition. Consequently, the combined effects are responsible for improvement of systemic insulin sensitivity and metabolic homeostasis.
Collapse
Affiliation(s)
- Rachel Botchlett
- Department of Nutrition and Food ScienceTexas A&M University, College Station, USA
- Pinnacle Clinical ResearchLive Oak, USA
| | - Shih-Lung Woo
- Department of Nutrition and Food ScienceTexas A&M University, College Station, USA
| | - Mengyang Liu
- Department of Nutrition and Food ScienceTexas A&M University, College Station, USA
| | - Ya Pei
- Department of Nutrition and Food ScienceTexas A&M University, College Station, USA
| | - Xin Guo
- Department of Nutrition and Food ScienceTexas A&M University, College Station, USA
- Baylor College of MedicineHouston, USA
| | - Honggui Li
- Department of Nutrition and Food ScienceTexas A&M University, College Station, USA
| | - Chaodong Wu
- Department of Nutrition and Food ScienceTexas A&M University, College Station, USA
| |
Collapse
|
39
|
Chen Z, Yu H, Shi Y, Zhu M, Wang Y, Hu X, Zhang Y, Chang Y, Xu M, Gao W. Vascular Remodelling Relates to an Elevated Oscillatory Shear Index and Relative Residence Time in Spontaneously Hypertensive Rats. Sci Rep 2017; 7:2007. [PMID: 28515420 PMCID: PMC5435712 DOI: 10.1038/s41598-017-01906-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 04/03/2017] [Indexed: 01/25/2023] Open
Abstract
Haemodynamic disorders are common clinical findings in hypertension and lead to adverse cardiovascular events. However, the haemodynamic conditions in hypertension models are poorly understood. This study aimed to observe the characteristics of haemodynamics in spontaneously hypertensive rats (SHRs) and antihypertensive-treated SHRs. Twenty-four adult male SHRs and Wistar-Kyoto rats (WKYs) were randomly divided into four groups and treated for 7 days as follows: WKY-CON (WKYs + saline), WKY-NIF (WKYs + nifedipine, 50 mg/kg/day), SHR-CON (SHRs + saline), and SHR-NIF (SHRs + nifedipine). Aortic computational fluid dynamics (CFD) models were simulated to obtain the haemodynamic parameters. We found that in the hypertensive (SHR-CON) and blood pressure-controlled (SHR-NIF) groups, the oscillatory shear index (OSI) and relative residence time (RRT), which are key haemodynamics indices, were markedly elevated. Furthermore, there was a correlation between both the elevated OSI and RRT with the vascular wall thickening in regions near the inner wall of the aortic arch. Our research demonstrates that haemodynamics remains disturbed even if the blood pressure is normalized. In addition, vascular remodelling may play an important role in maintaining elevated OSI and RRT values.
Collapse
Affiliation(s)
- Zhiyan Chen
- Department of Cardiology, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Haiyi Yu
- Department of Cardiology, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Yue Shi
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China
| | - Minjia Zhu
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China
| | - Yueshen Wang
- Department of Cardiology, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Xi Hu
- Department of Cardiology, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Youyi Zhang
- Department of Cardiology, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China
| | - Yu Chang
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing, 100124, China.
| | - Ming Xu
- Department of Cardiology, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China.
| | - Wei Gao
- Department of Cardiology, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Ministry of Health, Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education and Beijing Key Laboratory of Cardiovascular Receptors Research, Beijing, 100191, China.
| |
Collapse
|
40
|
Yamada Y, Takeuchi S, Yoneda M, Ito S, Sano Y, Nagasawa K, Matsuura N, Uchinaka A, Murohara T, Nagata K. Atorvastatin reduces cardiac and adipose tissue inflammation in rats with metabolic syndrome. Int J Cardiol 2017; 240:332-338. [PMID: 28499669 DOI: 10.1016/j.ijcard.2017.04.103] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 02/17/2017] [Accepted: 04/30/2017] [Indexed: 01/23/2023]
Abstract
BACKGROUND Statins are strong inhibitors of cholesterol biosynthesis and help to prevent cardiovascular disease. They also exert additional pleiotropic effects that include an anti-inflammatory action and are independent of cholesterol, but the molecular mechanisms underlying these additional effects have remained unclear. We have now examined the effects of atorvastatin on cardiac and adipose tissue inflammation in DahlS.Z-Leprfa/Leprfa (DS/obese) rats, which we previously established as a model of metabolic syndrome (MetS). METHODS AND RESULTS DS/obese rats were treated with atorvastatin (6 or 20mgkg-1day-1) from 9 to 13weeks of age. Atorvastatin ameliorated cardiac fibrosis, diastolic dysfunction, oxidative stress, and inflammation as well as adipose tissue inflammation in these animals at both doses. The high dose of atorvastatin reduced adipocyte hypertrophy to a greater extent than did the low dose. Atorvastatin inhibited the up-regulation of peroxisome proliferator-activated receptor γ gene expression in adipose tissue as well as decreased the serum adiponectin concentration in DS/obese rats. It also activated AMP-activated protein kinase (AMPK) as well as inactivated nuclear factor-κB (NF-κB) in the heart of these animals. The down-regulation of AMPK and NF-κB activities in adipose tissue of DS/obese rats was attenuated and further enhanced, respectively, by atorvastatin treatment. CONCLUSIONS The present results suggest that the anti-inflammatory effects of atorvastatin on the heart and adipose tissue are attributable at least partly to increased AMPK activity and decreased NF-κB activity in this rat model of MetS.
Collapse
Affiliation(s)
- Yuichiro Yamada
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shino Takeuchi
- Department of Medical Technology, Nagoya University School of Health Sciences, Nagoya, Japan
| | - Mamoru Yoneda
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shogo Ito
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yusuke Sano
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kai Nagasawa
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Natsumi Matsuura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ayako Uchinaka
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kohzo Nagata
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| |
Collapse
|
41
|
Tanajak P, Pintana H, Siri-Angkul N, Khamseekaew J, Apaijai N, Chattipakorn SC, Chattipakorn N. Vildagliptin and caloric restriction for cardioprotection in pre-diabetic rats. J Endocrinol 2017; 232:189-204. [PMID: 27875248 DOI: 10.1530/joe-16-0406] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 11/13/2016] [Indexed: 11/08/2022]
Abstract
Long-term high-fat diet (HFD) consumption causes cardiac dysfunction. Although calorie restriction (CR) has been shown to be useful in obesity, we hypothesized that combined CR with dipeptidyl peptidase-4 (DPP-4) inhibitor provides greater efficacy than monotherapy in attenuating cardiac dysfunction and metabolic impairment in HFD-induced obese-insulin resistant rats. Thirty male Wistar rats were divided into 2 groups to be fed on either a normal diet (ND, n = 6) or a HFD (n = 24) for 12 weeks. Then, HFD rats were divided into 4 subgroups (n = 6/subgroup) to receive just the vehicle, CR diet (60% of mean energy intake and changed to ND), vildagliptin (3 mg/kg/day) or combined CR and vildagliptin for 4 weeks. Metabolic parameters, heart rate variability (HRV), cardiac mitochondrial function, left ventricular (LV) and fibroblast growth factor (FGF) 21 signaling pathway were determined. Rats on a HFD developed insulin and FGF21 resistance, oxidative stress, cardiac mitochondrial dysfunction and impaired LV function. Rats on CR alone showed both decreased body weight and visceral fat accumulation, whereas vildagliptin did not alter these parameters. Rats in CR, vildagliptin and CR plus vildagliptin subgroups had improved insulin sensitivity and oxidative stress. However, vildagliptin improved heart rate variability (HRV), cardiac mitochondrial function and LV function better than the CR. Chronic HFD consumption leads to obese-insulin resistance and FGF21 resistance. Although CR is effective in improving metabolic regulation, vildagliptin provides greater efficacy in preventing cardiac dysfunction by improving anti-apoptosis and FGF21 signaling pathways and attenuating cardiac mitochondrial dysfunction in obese-insulin-resistant rats.
Collapse
Affiliation(s)
- Pongpan Tanajak
- Cardiac Electrophysiology Research and Training CenterFaculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology UnitDepartment of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology ResearchChiang Mai University, Chiang Mai, Thailand
| | - Hiranya Pintana
- Cardiac Electrophysiology Research and Training CenterFaculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology UnitDepartment of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology ResearchChiang Mai University, Chiang Mai, Thailand
| | - Natthaphat Siri-Angkul
- Cardiac Electrophysiology Research and Training CenterFaculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology UnitDepartment of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology ResearchChiang Mai University, Chiang Mai, Thailand
| | - Juthamas Khamseekaew
- Cardiac Electrophysiology Research and Training CenterFaculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology UnitDepartment of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology ResearchChiang Mai University, Chiang Mai, Thailand
| | - Nattayaporn Apaijai
- Cardiac Electrophysiology Research and Training CenterFaculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology UnitDepartment of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology ResearchChiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Cardiac Electrophysiology Research and Training CenterFaculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology ResearchChiang Mai University, Chiang Mai, Thailand
- Department of Oral Biology and Diagnostic SciencesFaculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training CenterFaculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology UnitDepartment of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Cardiac Electrophysiology ResearchChiang Mai University, Chiang Mai, Thailand
| |
Collapse
|
42
|
Ruiz-Hurtado G, García-Prieto CF, Pulido-Olmo H, Velasco-Martín JP, Villa-Valverde P, Fernández-Valle ME, Boscá L, Fernández-Velasco M, Regadera J, Somoza B, Fernández-Alfonso MS. Mild and Short-Term Caloric Restriction Prevents Obesity-Induced Cardiomyopathy in Young Zucker Rats without Changing in Metabolites and Fatty Acids Cardiac Profile. Front Physiol 2017; 8:42. [PMID: 28203206 PMCID: PMC5285365 DOI: 10.3389/fphys.2017.00042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 01/16/2017] [Indexed: 02/05/2023] Open
Abstract
Caloric restriction (CR) ameliorates cardiac dysfunction associated with obesity. However, most of the studies have been performed under severe CR (30-65% caloric intake decrease) for several months or even years in aged animals. Here, we investigated whether mild (20% food intake reduction) and short-term (2-weeks) CR prevented the obese cardiomyopathy phenotype and improved the metabolic profile of young (14 weeks of age) genetically obese Zucker fa/fa rats. Heart weight (HW) and HW/tibia length ratio was significantly lower in fa/fa rats after 2 weeks of CR than in counterparts fed ad libitum. Invasive pressure measurements showed that systolic blood pressure, maximal rate of positive left ventricle (LV) pressure, LV systolic pressure and LV end-diastolic pressure were all significantly higher in obese fa/fa rats than in lean counterparts, which were prevented by CR. Magnetic resonance imaging revealed that the increase in LV end-systolic volume, stroke volume and LV wall thickness observed in fa/fa rats was significantly lower in animals on CR diet. Histological analysis also revealed that CR blocked the significant increase in cardiomyocyte diameter in obese fa/fa rats. High resolution magic angle spinning magnetic resonance spectroscopy analysis of the LV revealed a global decrease in metabolites such as taurine, creatine and phosphocreatine, glutamate, glutamine and glutathione, in obese fa/fa rats, whereas lactate concentration was increased. By contrast, fatty acid concentrations in LV tissue were significantly elevated in obese fa/fa rats. CR failed to restore the LV metabolomic profile of obese fa/fa rats. In conclusion, mild and short-term CR prevented an obesity-induced cardiomyopathy phenotype in young obese fa/fa rats independently of the cardiac metabolic profile.
Collapse
Affiliation(s)
- Gema Ruiz-Hurtado
- Unidad de Hipertensión, Instituto de Investigación Imas12, Hospital Universitario 12 de OctubreMadrid, Spain
- Facultad de Farmacia, Instituto Pluridisciplinar, Universidad Complutense de MadridMadrid, Spain
- *Correspondence: Gema Ruiz-Hurtado
| | - Concha F. García-Prieto
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU-San PabloMadrid, Spain
| | - Helena Pulido-Olmo
- Unidad de Hipertensión, Instituto de Investigación Imas12, Hospital Universitario 12 de OctubreMadrid, Spain
- Facultad de Farmacia, Instituto Pluridisciplinar, Universidad Complutense de MadridMadrid, Spain
| | - Juan P. Velasco-Martín
- Departamento de Anatomía, Histología y Neurociencia, Facultad de Medicina. Universidad Autónoma de MadridMadrid, Spain
| | | | | | - Lisardo Boscá
- Departamento de Metabolismo y Señalización Celular, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM)Madrid, Spain
| | - María Fernández-Velasco
- Departamento de Metabolismo y Señalización Celular, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM)Madrid, Spain
- Departamento de Metabolismo y Señalización Celular, Instituto de Investigación Hospital Universitario La Paz (IdiPAZ)Madrid, Spain
| | - Javier Regadera
- Departamento de Anatomía, Histología y Neurociencia, Facultad de Medicina. Universidad Autónoma de MadridMadrid, Spain
| | - Beatriz Somoza
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU-San PabloMadrid, Spain
| | - María S. Fernández-Alfonso
- Facultad de Farmacia, Instituto Pluridisciplinar, Universidad Complutense de MadridMadrid, Spain
- María S. Fernández-Alfonso
| |
Collapse
|
43
|
Short-term moderate diet restriction in adulthood can reverse oxidative, cardiovascular and metabolic alterations induced by postnatal overfeeding in mice. Sci Rep 2016; 6:30817. [PMID: 27465434 PMCID: PMC4964358 DOI: 10.1038/srep30817] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 07/11/2016] [Indexed: 01/21/2023] Open
Abstract
We aimed to determine whether moderate diet restriction could restore cardiac, oxidative and metabolic alterations induced by postnatal overfeeding (PNOF). Litters of C57BL/6 male mice were either maintained at 9 (normal litter, NL), or reduced to 3 (small litter, SL) in order to induce PNOF. At 6 months, half of the NL and SL mice were subjected to 20% calorie-restriction (CR: NLCR, SLCR) for one month, while the other half continued to eat ad libitum (AL: NLAL, SLAL). Six-month old SL mice presented overweight, fat accumulation, hyperleptinemia, glucose intolerance, insulin resistance, increased cardiac ROS production and decreased left ventricular ejection fraction (LVEF). After CR, SL mice body weight was normalized; however, their fat mass and leptinemia were not decreased, glucose metabolism was improved and LVEF was increased. In SL mice, CR increased the cardiac mitochondrial respiratory rate and decreased cardiac ROS production. Hearts from SLCR mice showed better recovery and smaller postischemic infarct size. Intriguingly, no difference was observed between NLAL and NLCR mice for most of the parameters investigated. Short-term moderate CR not only normalized body weight in SL mice but also improved metabolic programming and reversed oxidative and cardiac dysfunction induced by PNOF.
Collapse
|
44
|
Ito S, Sano Y, Nagasawa K, Matsuura N, Yamada Y, Uchinaka A, Murohara T, Nagata K. Highly purified eicosapentaenoic acid ameliorates cardiac injury and adipose tissue inflammation in a rat model of metabolic syndrome. Obes Sci Pract 2016; 2:318-329. [PMID: 27708849 PMCID: PMC5043479 DOI: 10.1002/osp4.50] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 06/01/2016] [Accepted: 06/06/2016] [Indexed: 01/19/2023] Open
Abstract
INTRODUCTION n-3 Polyunsaturated fatty acids such as eicosapentaenoic acid (EPA), which are abundant in fish oil, have been shown to delay the onset of cardiovascular events. We previously established DahlS.Z-Leprfa/Leprfa (DS/obese) rats, which are derived from a cross between Dahl salt-sensitive and Zucker rats, as a model of metabolic syndrome. This study has now explored the influence of highly purified EPA on cardiac and adipose tissue pathophysiology in this animal model. MATERIALS AND METHODS DS/obese rats were administered EPA (300 or 1,000 mg kg-1 d-1, per os) or vehicle from age 9 to 13 weeks. Homozygous lean (DahlS.Z-Lepr+/Lepr+, or DS/lean) littermates were studied as controls. RESULTS Whereas EPA had no effect on body weight, food intake or systolic blood pressure in DS/obese rats, it attenuated cardiac fibrosis, diastolic dysfunction, oxidative stress and inflammation in these animals. In addition, EPA did not affect insulin resistance but reduced adipocyte hypertrophy and inflammation in visceral fat of DS/obese rats. Moreover, EPA increased circulating levels of adiponectin as well as attenuated both the down-regulation of AMP-activated protein kinase phosphorylation and the up-regulation of phosphorylation of the p65 subunit of nuclear factor-kB in the heart of DS/obese rats. CONCLUSIONS Treatment of DS/obese rats with EPA did not affect hypertension but reduced cardiac fibrosis and diastolic dysfunction, with the latter effects being accompanied by AMP-activated protein kinase activation and inactivation of nuclear factor-kB signalling in the heart, possibly as a result of an increase in adiponectin secretion. EPA may be suitable for the treatment of cardiac injury associated with metabolic syndrome.
Collapse
Affiliation(s)
- S Ito
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - Y Sano
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - K Nagasawa
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - N Matsuura
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - Y Yamada
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - A Uchinaka
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| | - T Murohara
- Department of Cardiology Nagoya University Graduate School of Medicine Nagoya Japan
| | - K Nagata
- Department of Pathophysiological Laboratory Sciences Nagoya University Graduate School of Medicine Nagoya Japan
| |
Collapse
|
45
|
Affiliation(s)
- Achim Lother
- From the Institute of Experimental and Clinical Pharmacology and Toxicology, Faculty of Medicine, (A.L., L.H.), Heart Center, Department of Cardiology and Angiology I, (A.L.), and BIOSS Centre for Biological Signaling Studies (L.H.), University of Freiburg, Germany
| | - Lutz Hein
- From the Institute of Experimental and Clinical Pharmacology and Toxicology, Faculty of Medicine, (A.L., L.H.), Heart Center, Department of Cardiology and Angiology I, (A.L.), and BIOSS Centre for Biological Signaling Studies (L.H.), University of Freiburg, Germany
| |
Collapse
|
46
|
Nagasawa K, Matsuura N, Takeshita Y, Ito S, Sano Y, Yamada Y, Uchinaka A, Murohara T, Nagata K. Attenuation of cold stress-induced exacerbation of cardiac and adipose tissue pathology and metabolic disorders in a rat model of metabolic syndrome by the glucocorticoid receptor antagonist RU486. Nutr Diabetes 2016; 6:e207. [PMID: 27110688 PMCID: PMC4855259 DOI: 10.1038/nutd.2016.14] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 03/07/2016] [Accepted: 03/16/2016] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES Chronic stress affects the central nervous system as well as endocrine, metabolic and immune systems. However, the effects of cold stress on cardiovascular and metabolic disorders in metabolic syndrome (MetS) have remained unclear. We recently characterized DahlS.Z-Lepr(fa)/Lepr(fa) (DS/obese) rats, derived from a cross between Dahl salt-sensitive and Zucker rats, as a new animal model of MetS. We have now investigated the effects of chronic cold stress and glucocorticoid receptor (GR) blockade on cardiac and adipose tissue pathology as well as on metabolic parameters in this model. METHODS DS/obese rats were exposed to cold stress (immersion in ice-cold water to a depth of 1-2 cm for 2 h per day) with or without subcutaneous injection of the GR antagonist RU486 (2 mg kg(-1)day(-1)) for 4 weeks beginning at 9 weeks of age. Age-matched homozygous lean (DahlS.Z-Lepr(+)/Lepr(+)) littermates served as a control. RESULTS Chronic cold stress exacerbated hypertension as well as left ventricular (LV) hypertrophy, fibrosis and diastolic dysfunction in DS/obese rats in a manner sensitive to RU486 treatment. Cold stress with or without RU486 did not affect body weight or fat mass. In contrast, cold stress further increased cardiac oxidative stress as well as macrophage infiltration and proinflammatory gene expression in LV and visceral fat tissue, with all of these effects being attenuated by RU486. Cold stress also further increased GR and 11β-hydroxysteroid dehydrogenase type 1 mRNA and protein abundance in LV and visceral adipose tissue, and these effects were again inhibited by RU486. In addition, RU486 ameliorated the stress-induced aggravation of dyslipidemia, glucose intolerance and insulin resistance in DS/obese rats. CONCLUSIONS Our results implicate GR signaling in cold stress-induced exacerbation of cardiac and adipose tissue pathology as well as of abnormal glucose and lipid metabolism in a rat model of MetS.
Collapse
Affiliation(s)
- K Nagasawa
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| | - N Matsuura
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| | - Y Takeshita
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| | - S Ito
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| | - Y Sano
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| | - Y Yamada
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| | - A Uchinaka
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| | - T Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Nagata
- Department of Pathophysiological Laboratory Sciences, Nagoya, Japan
| |
Collapse
|
47
|
Yamamoto T, Tamaki K, Shirakawa K, Ito K, Yan X, Katsumata Y, Anzai A, Matsuhashi T, Endo J, Inaba T, Tsubota K, Sano M, Fukuda K, Shinmura K. Cardiac Sirt1 mediates the cardioprotective effect of caloric restriction by suppressing local complement system activation after ischemia-reperfusion. Am J Physiol Heart Circ Physiol 2016; 310:H1003-14. [PMID: 26873964 DOI: 10.1152/ajpheart.00676.2015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 02/04/2016] [Indexed: 11/22/2022]
Abstract
Caloric restriction (CR) confers cardioprotection against ischemia-reperfusion (I/R) injury. We previously found the essential roles of endothelial nitric oxide synthase in the development of CR-induced cardioprotection and Sirt1 activation during CR (Shinmura K, Tamaki K, Ito K, Yan X, Yamamoto T, Katsumata Y, Matsuhashi T, Sano M, Fukuda K, Suematsu M, Ishii I. Indispensable role of endothelial nitric oxide synthase in caloric restriction-induced cardioprotection against ischemia-reperfusion injury.Am J Physiol Heart Circ Physiol 308: H894-H903, 2015). However, the exact mechanism by which Sirt1 in cardiomyocytes mediates the cardioprotective effect of CR remains undetermined. We subjected cardiomyocyte-specific Sirt1 knockout (CM-Sirt1(-/-)) mice and the corresponding control mice to either 3-mo ad libitum feeding or CR (-40%). Isolated perfused hearts were subjected to 25-min global ischemia, followed by 60-min reperfusion. The recovery of left ventricle function after I/R was improved, and total lactate dehydrogenase release into the perfusate during reperfusion was attenuated in the control mice treated with CR, but a similar cardioprotective effect of CR was not observed in the CM-Sirt1(-/-)mice. The expression levels of cardiac complement component 3 (C3) at baseline and the accumulation of C3 and its fragments in the ischemia-reperfused myocardium were attenuated by CR in the control mice, but not in the CM-Sirt1(-/-)mice. Resveratrol treatment also attenuated the expression levels of C3 protein in cultured neonatal rat ventricular cardiomyocytes. Moreover, the degree of myocardial I/R injury in conventional C3 knockout (C3(-/-)) mice treated with CR was similar to that in the ad libitum-fed C3(-/-)mice, although the expression levels of Sirt1 were enhanced by CR. These results demonstrate that cardiac Sirt1 plays an essential role in CR-induced cardioprotection against I/R injury by suppressing cardiac C3 expression. This is the first report suggesting that cardiac Sirt1 regulates the local complement system during CR.
Collapse
Affiliation(s)
- Tsunehisa Yamamoto
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Kayoko Tamaki
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan; Department of General Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Kohsuke Shirakawa
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Kentaro Ito
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Xiaoxiang Yan
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | | | - Atsushi Anzai
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | | | - Jin Endo
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Takaaki Inaba
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; and
| | - Kazuo Tsubota
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; and
| | - Motoaki Sano
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Keiichi Fukuda
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Ken Shinmura
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan; Department of General Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| |
Collapse
|
48
|
FoxO1 signaling plays a pivotal role in the cardiac telomere biology responses to calorie restriction. Mol Cell Biochem 2015; 412:119-30. [PMID: 26708219 PMCID: PMC4718961 DOI: 10.1007/s11010-015-2615-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 12/08/2015] [Indexed: 01/24/2023]
Abstract
This study examined whether the forkhead transcription factors of O group 1 (FoxO1) might be involved in telomere biology during calorie restriction (CR). We used FoxO1-knockout heterozygous mice (FoxO1+/−) and wild-type mice (WT) as a control. Both WT and FoxO1+/− were subjected to ad libitum (AL) feeding or 30 % CR compared to AL for 20 weeks from 15 weeks of age. The heart-to-body weight ratio, blood glucose, and serum lipid profiles were not different among all groups of mice at the end of the study. Telomere size was significantly lower in the FoxO1+/−-AL than the WT-AL, and telomere attrition was not observed in either WT-CR or FoxO1+/−-CR. Telomerase activity was elevated in the heart and liver of WT-CR, but not in those of FoxO1+/−-CR. The phosphorylation of Akt was inhibited and Sirt 1 was activated in heart tissues of WT-CR and FoxO1+/−-CR. However, the ratio of conjugated to cytosolic light chain 3 increased and the level of p62 decreased in WT-CR, but not in FoxO1+/−-CR. A marker of oxidative DNA damage, 8-OhdG, was significantly lower in WT-CR only. The level of MnSOD and eNOS increased, and the level of cleaved caspase-3 decreased in WT-CR, but not FoxO1+/−-CR. Echocardiography showed that the left ventricular end-diastolic and systolic dimensions were significantly lower in WT-CR or FoxO1+/−-CR than WT-AL or FoxO1+/−-AL, respectively. The present studies suggest that FoxO1 plays beneficial roles by inducing genes involved in telomerase activity, as well as anti-oxidant, autophagic, and anti-apoptotic genes under conditions of CR, and suggest that FoxO1 signaling may be an important mediator of metabolic equilibrium during CR.
Collapse
|
49
|
Camici GG, Savarese G, Akhmedov A, Lüscher TF. Molecular mechanism of endothelial and vascular aging: implications for cardiovascular disease. Eur Heart J 2015; 36:3392-403. [PMID: 26543043 DOI: 10.1093/eurheartj/ehv587] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 10/11/2015] [Indexed: 02/07/2023] Open
Abstract
Western societies are aging due to an increasing life span, decreased birth rates, and improving social and health conditions. On the other hand, the prevalence of cardiovascular (CV) and cerebrovascular (CBV) diseases rises with age. Thus, in view of the ongoing aging pandemic, it is appropriate to better understand the molecular pathways of aging as well as age-associated CV and CBV diseases. Oxidative stress contributes to aging of organs and the whole body by an accumulation of reactive oxygen species promoting oxidative damage. Indeed, increased oxidative stress produced in the mitochondria and cytosol of heart and brain is a common denominator to almost all CV and CBV diseases. The mitochondrial adaptor protein p66(Shc) and the family of deacetylase enzymes, the sirtuins, regulate the aging process, determine lifespan of many species and are involved in CV diseases. GDF11, a member of TGFβ superfamily with homology to myostatin also retards the aging process via yet unknown mechanisms. Recent evidence points towards a promising role of this novel 'rejuvenation' factor in reducing age-related heart disease. Finally, telomere length is also involved in aging and the development of age-related CV dysfunction. This review focuses on the latest scientific advances in understanding age-related changes of the CV and CBV system, as well as delineating potential novel therapeutic targets derived from aging research for CV and CBV diseases.
Collapse
Affiliation(s)
- Giovanni G Camici
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Gianluigi Savarese
- Cardiology Unit, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Alexander Akhmedov
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, University of Zurich, Zurich, Switzerland University Heart Center, Cardiology, University Hospital Zurich, Zurich, Switzerland
| |
Collapse
|
50
|
Abstract
AbstractEnergy restriction (ER; also known as caloric restriction) is the only nutritional intervention that has repeatedly been shown to increase lifespan in model organisms and may delay ageing in humans. In the present review we discuss current scientific literature on ER and its molecular, metabolic and hormonal effects. Moreover, criteria for the classification of substances that might induce positive ER-like changes without having to reduce energy intake are summarised. Additionally, the putative ER mimetics (ERM) 2-deoxy-d-glucose, metformin, rapamycin, resveratrol, spermidine and lipoic acid and their suggested molecular targets are discussed. While there are reports on these ERM candidates that describe lifespan extension in model organisms, data on longevity-inducing effects in higher organisms such as mice remain controversial or are missing. Furthermore, some of these candidates produce detrimental side effects such as immunosuppression or lactic acidosis, or have not been tested for safety in long-term studies. Up to now, there are no known ERM that could be recommended without limitations for use in humans.
Collapse
|