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Eirin A, Chade AR, Lerman LO. Kidney Intrinsic Mechanisms as Novel Targets in Renovascular Hypertension. Hypertension 2024; 81:206-217. [PMID: 37869904 PMCID: PMC10842320 DOI: 10.1161/hypertensionaha.123.21362] [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] [Indexed: 10/24/2023]
Abstract
Almost a hundred years have passed since obstruction of the renal artery has been recognized to raise blood pressure. By now chronic renovascular disease (RVD) due to renal artery stenosis is recognized as a major source of renovascular hypertension and renal disease. In some patients, RVD unaccompanied by noteworthy renal dysfunction or blood pressure elevation may be incidentally identified during peripheral angiography. Nevertheless, in others, RVD might present as a progressive disease associated with diffuse atherosclerosis, leading to loss of renal function, renovascular hypertension, hemodynamic compromise, and a magnified risk for cardiovascular morbidity and mortality. Atherosclerotic RVD leads to renal atrophy, inflammation, and hypoxia but represents a potentially treatable cause of chronic renal failure because until severe fibrosis sets in the ischemic kidney, it retains a robust potential for vascular and tubular regeneration. This remarkable recovery capacity of the kidney begs for early diagnosis and treatment. However, accumulating evidence from both animal studies and randomized clinical trials has convincingly established the inadequate efficacy of renal artery revascularization to fully restore renal function or blood pressure control and has illuminated the potential of therapies targeted to the ischemic renal parenchyma to instigate renal regeneration. Some of the injurious mechanisms identified as potential therapeutic targets included oxidative stress, microvascular disease, inflammation, mitochondrial injury, and cellular senescence. This review recapitulates the intrinsic mechanisms that orchestrate renal damage and recovery in RVD and can be harnessed to introduce remedial opportunities.
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Affiliation(s)
- Alfonso Eirin
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Alejandro R. Chade
- Department of Medical Pharmacology and Physiology, University of Missouri-Columbia, MO
| | - Lilach O. Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
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2
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Wu C, Chen F, Huang S, Zhang Z, Wan J, Zhang W, Liu X. Progress on the role of traditional Chinese medicine in therapeutic angiogenesis of heart failure. JOURNAL OF ETHNOPHARMACOLOGY 2023; 301:115770. [PMID: 36191661 DOI: 10.1016/j.jep.2022.115770] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/21/2022] [Accepted: 09/25/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cardiovascular diseases are still the leading cause of death worldwide. Heart failure (HF), as the terminal stage of many cardiovascular diseases, has brought a heavy burden to the global medical system. Microvascular rarefaction (decreased myocardial capillary density) with reduced coronary flow reserve is a hallmark of HF and therapeutic myocardial angiogenesis is now emerging as a promising approach for the prevention and treatment in HF. Traditional Chinese medicine (TCM) has made remarkable achievements in the treatment of many cardiovascular diseases. Growing evidence have shown that their protective effect in HF is closely related to therapeutic angiogenesis. AIM OF THE STUDY This review is to enlighten the therapeutic effect and pro-angiogenic mechanism of TCM in HF, and provide valuable hints for the development of pro-angiogenic drugs for the treatment of HF. MATERIALS AND METHODS The relevant information about cardioprotective TCM was collected from electronic scientific databases such as PubMed, Web of Science, ScienceDirect, and China National Knowledge Infrastructure (CNKI). RESULTS The studies showed that TCM formulas, extracts, and compounds from herbal medicines can provide therapeutic effect in HF with their pro-angiogenic activity. Their actions are achieved mainly by regulating the key angiogenesis factors particularly VEGF, as well as related regulators including signal molecules and pathways, non-coding miRNAs and stem cells. CONCLUSION TCM and their active components might be promising in therapeutic angiogenesis for the treatment of HF.
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Affiliation(s)
- Chennan Wu
- School of Pharmacy, Second Military Medical University, Shanghai, China.
| | - Fei Chen
- School of Pharmacy, Second Military Medical University, Shanghai, China.
| | - Si Huang
- School of Pharmacy, Second Military Medical University, Shanghai, China.
| | - Zhen Zhang
- School of Pharmacy, Second Military Medical University, Shanghai, China.
| | - Jingjing Wan
- School of Pharmacy, Second Military Medical University, Shanghai, China.
| | - Weidong Zhang
- School of Pharmacy, Second Military Medical University, Shanghai, China; Academy of Interdisciplinary Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Xia Liu
- School of Pharmacy, Second Military Medical University, Shanghai, China.
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3
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Kirichenko YY, Ilgisonis IS, Belenkov YN, Privalova EV, Naymann YI, Lyamin AM, Kozhevnikova MV, Korobkova EO, Khabarova NV, Ogorodnikov NV. [The effect of chemotherapy on endothelial function and microcirculation in patients with gastric cancer]. KARDIOLOGIIA 2020; 60:89-95. [PMID: 32345204 DOI: 10.18087/cardio.2020.2.n908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To evaluate and study the dynamics of endothelial dysfunction instrumental indicators, vascular wall stiffness and microcirculation state in patients with gastric cancer (adenocarcinoma) before and after chemotherapy; compare it with the results obtained from healthy volunteers and patients with cardio-vascular diseases. MATERIALS AND METHODS The study included 65 people: 25 healthy volunteers, 15 patients with known cardio-vascular diseases (CVD) and 25 patients with histologically confirmed gastric cancer (adenocarcinoma) stage 2-4 who underwent surgical treatment followed by chemotherapy according to the FOLFOX, XELOX, and XP regimes. For non-invasive assessment of the vascular wall's state of large vessels and microcirculation, all patients in the main group underwent computer nailfold capillaroscopy and finger photoplethysmography before chemotherapy and within a month after the completion of the last course. For healthy volunteers and patients with CVD, the above studies were performed once during the examination. RESULTS The data obtained indicate a significant increase in the reflection index of small muscle arteries (RI) and the stiffness index of large conducting arteries (aSI) during chemotherapy. In cancer patients, even before the treatment, endothelial dysfunction was detected, which significantly worsened after treatment (occlusion index (IO) before and after chemotherapy 1.7 (1.38; 1.9) vs. 1.3 (1.2; 1.5), p<0.0002, respectively). Significant differences in the compared indices in cancer patients and CVD group were revealed only after chemotherapy. Significant structural and functional disorders of capillaries were noted in the studied groups, which also worsened during chemotherapy in the main group (density of the capillary network at rest 43.23cap/mm2 vs. 42.19cap/mm2, p <0.01, respectively; density of the capillary network after the reactive hyperemia test 46.77cap/mm2 vs. 44.11cap/mm2, p<0,02, respectively). CONCLUSION In this study, for the first time, the dynamics of endothelial dysfunction indicators, vascular wall stiffness and microcirculation state in patients with gastric cancer were studied, and a reliable increasing of these changes was proved during chemotherapy. The results indicate the need for a further search for accurate and effective methods of identifying early signs of close and distant vasculotoxicity, the development of individual prevention programs in order to significantly reduce the risk of cardiovascular events during and after chemotherapy.
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Affiliation(s)
- Yu Yu Kirichenko
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - I S Ilgisonis
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - Yu N Belenkov
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - E V Privalova
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - Yu I Naymann
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - A M Lyamin
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - M V Kozhevnikova
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - E O Korobkova
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - N V Khabarova
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
| | - N V Ogorodnikov
- First Moscow State Medical University by I.M. Sechenov (Sechenov University), Moscow
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Tocchetti CG, Cadeddu C, Di Lisi D, Femminò S, Madonna R, Mele D, Monte I, Novo G, Penna C, Pepe A, Spallarossa P, Varricchi G, Zito C, Pagliaro P, Mercuro G. From Molecular Mechanisms to Clinical Management of Antineoplastic Drug-Induced Cardiovascular Toxicity: A Translational Overview. Antioxid Redox Signal 2019; 30:2110-2153. [PMID: 28398124 PMCID: PMC6529857 DOI: 10.1089/ars.2016.6930] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Significance: Antineoplastic therapies have significantly improved the prognosis of oncology patients. However, these treatments can bring to a higher incidence of side-effects, including the worrying cardiovascular toxicity (CTX). Recent Advances: Substantial evidence indicates multiple mechanisms of CTX, with redox mechanisms playing a key role. Recent data singled out mitochondria as key targets for antineoplastic drug-induced CTX; understanding the underlying mechanisms is, therefore, crucial for effective cardioprotection, without compromising the efficacy of anti-cancer treatments. Critical Issues: CTX can occur within a few days or many years after treatment. Type I CTX is associated with irreversible cardiac cell injury, and it is typically caused by anthracyclines and traditional chemotherapeutics. Type II CTX is generally caused by novel biologics and more targeted drugs, and it is associated with reversible myocardial dysfunction. Therefore, patients undergoing anti-cancer treatments should be closely monitored, and patients at risk of CTX should be identified before beginning treatment to reduce CTX-related morbidity. Future Directions: Genetic profiling of clinical risk factors and an integrated approach using molecular, imaging, and clinical data may allow the recognition of patients who are at a high risk of developing chemotherapy-related CTX, and it may suggest methodologies to limit damage in a wider range of patients. The involvement of redox mechanisms in cancer biology and anticancer treatments is a very active field of research. Further investigations will be necessary to uncover the hallmarks of cancer from a redox perspective and to develop more efficacious antineoplastic therapies that also spare the cardiovascular system.
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Affiliation(s)
| | - Christian Cadeddu
- 2 Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Daniela Di Lisi
- 3 Biomedical Department of Internal Medicine, University of Palermo, Palermo, Italy
| | - Saveria Femminò
- 4 Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Rosalinda Madonna
- 5 Center of Aging Sciences and Translational Medicine - CESI-MeT, "G. d'Annunzio" University, Chieti, Italy.,6 Department of Internal Medicine, The Texas Heart Institute and Center for Cardiovascular Biology and Atherosclerosis Research, The University of Texas Health Science Center at Houston, Houston, Texas
| | - Donato Mele
- 7 Cardiology Unit, Emergency Department, University Hospital of Ferrara, Ferrara, Italy
| | - Ines Monte
- 8 Department of General Surgery and Medical-Surgery Specialities, University of Catania, Catania, Italy
| | - Giuseppina Novo
- 3 Biomedical Department of Internal Medicine, University of Palermo, Palermo, Italy
| | - Claudia Penna
- 4 Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Alessia Pepe
- 9 U.O.C. Magnetic Resonance Imaging, Fondazione Toscana G. Monasterio C.N.R., Pisa, Italy
| | - Paolo Spallarossa
- 10 Clinic of Cardiovascular Diseases, IRCCS San Martino IST, Genova, Italy
| | - Gilda Varricchi
- 1 Department of Translational Medical Sciences, Federico II University, Naples, Italy.,11 Center for Basic and Clinical Immunology Research (CISI) - Federico II University, Naples, Italy
| | - Concetta Zito
- 12 Division of Cardiology, Clinical and Experimental Department of Medicine and Pharmacology, Policlinico "G. Martino" University of Messina, Messina, Italy
| | - Pasquale Pagliaro
- 4 Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Giuseppe Mercuro
- 2 Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
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Justice CN, Derbala MH, Baich TM, Kempton AN, Guo AS, Ho TH, Smith SA. The Impact of Pazopanib on the Cardiovascular System. J Cardiovasc Pharmacol Ther 2018; 23:387-398. [PMID: 29706106 PMCID: PMC6257996 DOI: 10.1177/1074248418769612] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Pazopanib is an approved treatment for renal cell carcinoma and a second-line treatment for nonadipocytic soft-tissue sarcoma. However, its clinical efficacy is limited by its cardiovascular side effects. Pazopanib and other vascular endothelial growth factor receptor tyrosine kinase inhibitors have been associated with the development of hypertension, QT interval prolongation, and other cardiovascular events; however, these mechanisms are largely unknown. Gaining a deeper understanding of these mechanisms is essential for the development of appropriate surveillance strategies and possible diagnostic biomarkers to allow us to monitor patients and modulate therapy prior to significant cardiac insult. This approach will be vital in keeping patients on these life-saving therapies and may be applicable to other tyrosine kinase inhibitors as well. In this review, we provide a comprehensive overview of the preclinical and clinical side effects of pazopanib with a focus on the mechanisms responsible for its toxicity to the cardiovascular system.
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Affiliation(s)
- Cody N. Justice
- Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Mohamed H. Derbala
- Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Tesla M. Baich
- Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Amber N. Kempton
- Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Aaron S. Guo
- Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
| | - Thai H. Ho
- Mayo Clinic Scottsdale, Arizona, Phoenix, AZ, USA
| | - Sakima A. Smith
- Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, USA
- Division of Cardiology, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, OH, USA
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6
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Varricchi G, Ameri P, Cadeddu C, Ghigo A, Madonna R, Marone G, Mercurio V, Monte I, Novo G, Parrella P, Pirozzi F, Pecoraro A, Spallarossa P, Zito C, Mercuro G, Pagliaro P, Tocchetti CG. Antineoplastic Drug-Induced Cardiotoxicity: A Redox Perspective. Front Physiol 2018; 9:167. [PMID: 29563880 PMCID: PMC5846016 DOI: 10.3389/fphys.2018.00167] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 02/20/2018] [Indexed: 12/28/2022] Open
Abstract
Antineoplastic drugs can be associated with several side effects, including cardiovascular toxicity (CTX). Biochemical studies have identified multiple mechanisms of CTX. Chemoterapeutic agents can alter redox homeostasis by increasing the production of reactive oxygen species (ROS) and reactive nitrogen species RNS. Cellular sources of ROS/RNS are cardiomyocytes, endothelial cells, stromal and inflammatory cells in the heart. Mitochondria, peroxisomes and other subcellular components are central hubs that control redox homeostasis. Mitochondria are central targets for antineoplastic drug-induced CTX. Understanding the mechanisms of CTX is fundamental for effective cardioprotection, without compromising the efficacy of anticancer treatments. Type 1 CTX is associated with irreversible cardiac cell injury and is typically caused by anthracyclines and conventional chemotherapeutic agents. Type 2 CTX, associated with reversible myocardial dysfunction, is generally caused by biologicals and targeted drugs. Although oxidative/nitrosative reactions play a central role in CTX caused by different antineoplastic drugs, additional mechanisms involving directly and indirectly cardiomyocytes and inflammatory cells play a role in cardiovascular toxicities. Identification of cardiologic risk factors and an integrated approach using molecular, imaging, and clinical data may allow the selection of patients at risk of developing chemotherapy-related CTX. Although the last decade has witnessed intense research related to the molecular and biochemical mechanisms of CTX of antineoplastic drugs, experimental and clinical studies are urgently needed to balance safety and efficacy of novel cancer therapies.
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Affiliation(s)
- Gilda Varricchi
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
- Department of Translational Medical Sciences, Center for Basic and Clinical Immunology Research, University of Naples Federico II, Naples, Italy
| | - Pietro Ameri
- Clinic of Cardiovascular Diseases, IRCCS San Martino IST, Genova, Italy
| | - Christian Cadeddu
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Alessandra Ghigo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, Turin, Italy
| | - Rosalinda Madonna
- Institute of Cardiology, Center of Excellence on Aging, Università degli Studi “G. d'Annunzio” Chieti – Pescara, Chieti, Italy
- Department of Internal Medicine, Texas Heart Institute and Center for Cardiovascular Biology and Atherosclerosis Research, University of Texas Health Science Center, Houston, TX, United States
| | - Giancarlo Marone
- Section of Hygiene, Department of Public Health, University of Naples Federico II, Naples, Italy
- Monaldi Hospital Pharmacy, Naples, Italy
| | - Valentina Mercurio
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Ines Monte
- Department of General Surgery and Medical-Surgery Specialities, University of Catania, Catania, Italy
| | - Giuseppina Novo
- U.O.C. Magnetic Resonance Imaging, Fondazione Toscana G. Monasterio C.N.R., Pisa, Italy
| | - Paolo Parrella
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Flora Pirozzi
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Antonio Pecoraro
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Paolo Spallarossa
- Clinic of Cardiovascular Diseases, IRCCS San Martino IST, Genova, Italy
| | - Concetta Zito
- Division of Clinical and Experimental Cardiology, Department of Medicine and Pharmacology, Policlinico “G. Martino” University of Messina, Messina, Italy
| | - Giuseppe Mercuro
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Carlo G. Tocchetti
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
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7
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Madonna R, Cadeddu C, Deidda M, Mele D, Monte I, Novo G, Pagliaro P, Pepe A, Spallarossa P, Tocchetti CG, Zito C, Mercuro G. Improving the preclinical models for the study of chemotherapy-induced cardiotoxicity: a Position Paper of the Italian Working Group on Drug Cardiotoxicity and Cardioprotection. Heart Fail Rev 2016; 20:621-31. [PMID: 26168714 DOI: 10.1007/s10741-015-9497-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Although treatment for heart failure induced by cancer therapy has improved in recent years, the prevalence of cardiomyopathy due to antineoplastic therapy remains significant worldwide. In addition to traditional mediators of myocardial damage, such as reactive oxygen species, new pathways and target cells should be considered responsible for the impairment of cardiac function during anticancer treatment. Accordingly, there is a need to develop novel therapeutic strategies to protect the heart from pharmacologic injury, and improve clinical outcomes in cancer patients. The development of novel protective therapies requires testing putative therapeutic strategies in appropriate animal models of chemotherapy-induced cardiomyopathy. This Position Paper of the Working Group on Drug Cardiotoxicity and Cardioprotection of the Italian Society of Cardiology aims to: (1) define the distinctive etiopatogenetic features of cardiac toxicity induced by cancer therapy in humans, which include new aspects of mitochondrial function and oxidative stress, neuregulin-1 modulation through the ErbB receptor family, angiogenesis inhibition, and cardiac stem cell depletion and/or dysfunction; (2) review the new, more promising therapeutic strategies for cardioprotection, aimed to increase the survival of patients with severe antineoplastic-induced cardiotoxicity; (3) recommend the distinctive pathological features of cardiotoxicity induced by cancer therapy in humans that should be present in animal models used to identify or to test new cardioprotective therapies.
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Affiliation(s)
- Rosalinda Madonna
- Center of Excellence on Aging, Institute of Cardiology, "G. d'Annunzio" University - Chieti, Chieti, Italy,
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8
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Saad A, Herrmann SM, Textor SC. Chronic renal ischemia in humans: can cell therapy repair the kidney in occlusive renovascular disease? Physiology (Bethesda) 2016; 30:175-82. [PMID: 25933818 DOI: 10.1152/physiol.00065.2013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Occlusive renovascular disease caused by atherosclerotic renal artery stenosis (ARAS) elicits complex biological responses that eventually lead to loss of kidney function. Recent studies indicate a complex interplay of oxidative stress, endothelial dysfunction, and activation of fibrogenic and inflammatory cytokines as a result of atherosclerosis, hypoxia, and renal hypoperfusion in this disorder. Human studies emphasize the limits of the kidney adaptation to reduced blood flow, eventually leading to renal hypoxia with activation of inflammatory and fibrogenic pathways. Several randomized prospective clinical trials show that stent revascularization alone in patients with atherosclerotic renal artery stenosis provides little additional benefit to medical therapy once these processes have developed and solidified. Experimental data now support developing adjunctive cell-based measures to support angiogenesis and anti-inflammatory renal repair mechanisms. These data encourage the study of endothelial progenitor cells and/or mesenchymal stem/stromal cells for the repair of damaged kidney tissue.
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Affiliation(s)
- Ahmed Saad
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Sandra M Herrmann
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Stephen C Textor
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
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9
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Molinaro M, Ameri P, Marone G, Petretta M, Abete P, Di Lisa F, De Placido S, Bonaduce D, Tocchetti CG. Recent Advances on Pathophysiology, Diagnostic and Therapeutic Insights in Cardiac Dysfunction Induced by Antineoplastic Drugs. BIOMED RESEARCH INTERNATIONAL 2015; 2015:138148. [PMID: 26583088 PMCID: PMC4637019 DOI: 10.1155/2015/138148] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 07/01/2015] [Indexed: 12/28/2022]
Abstract
Along with the improvement of survival after cancer, cardiotoxicity due to antineoplastic treatments has emerged as a clinically relevant problem. Potential cardiovascular toxicities due to anticancer agents include QT prolongation and arrhythmias, myocardial ischemia and infarction, hypertension and/or thromboembolism, left ventricular (LV) dysfunction, and heart failure (HF). The latter is variable in severity, may be reversible or irreversible, and can occur soon after or as a delayed consequence of anticancer treatments. In the last decade recent advances have emerged in clinical and pathophysiological aspects of LV dysfunction induced by the most widely used anticancer drugs. In particular, early, sensitive markers of cardiac dysfunction that can predict this form of cardiomyopathy before ejection fraction (EF) is reduced are becoming increasingly important, along with novel therapeutic and cardioprotective strategies, in the attempt of protecting cardiooncologic patients from the development of congestive heart failure.
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Affiliation(s)
- Marilisa Molinaro
- Department of Medicine and Health Sciences, University of Molise, 86100 Campobasso, Italy
| | - Pietro Ameri
- Department of Internal Medicine, University of Genova, 16132 Genova, Italy
| | - Giancarlo Marone
- Department of Clinical Medicine and Surgery, Federico II University, 80131 Naples, Italy
| | - Mario Petretta
- Department of Translational Medical Sciences, Division of Internal Medicine, Federico II University, 80131 Naples, Italy
| | - Pasquale Abete
- Department of Translational Medical Sciences, Division of Internal Medicine, Federico II University, 80131 Naples, Italy
| | - Fabio Di Lisa
- Department of Biomedical Sciences, University of Padova, 35121 Padova, Italy
- National Researches Council, Neuroscience Institute, University of Padova, 35121 Padova, Italy
| | - Sabino De Placido
- Department of Clinical Medicine and Surgery, Federico II University, 80131 Naples, Italy
| | - Domenico Bonaduce
- Department of Translational Medical Sciences, Division of Internal Medicine, Federico II University, 80131 Naples, Italy
| | - Carlo G. Tocchetti
- Department of Translational Medical Sciences, Division of Internal Medicine, Federico II University, 80131 Naples, Italy
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10
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Qi WX, Shen Z, Tang LN, Yao Y. Congestive heart failure risk in cancer patients treated with vascular endothelial growth factor tyrosine kinase inhibitors: a systematic review and meta-analysis of 36 clinical trials. Br J Clin Pharmacol 2015; 78:748-62. [PMID: 24661224 DOI: 10.1111/bcp.12387] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 03/19/2014] [Indexed: 01/14/2023] Open
Abstract
AIMS Congestive heart failure (CHF) associated with vascular endothelial growth factor tyrosine-kinase inhibitors (VEGFR-TKIs) has emerged as a relevant problem in clinical and scientific communities. We performed an up-to-date, comprehensive meta-analysis to determine the overall incidence and risk of CHF in cancer patients receiving VEGFR-TKIs. METHODS The databases of PubMed, Web of Science and abstracts presented at the American Society of Clinical Oncology up to August 31 2013 were searched for relevant articles. Statistical analyses were conducted to calculate the summary incidence, odds ratio (OR) and 95% confidence intervals (CIs) by using either random effects or fixed effect models according to the heterogeneity of included studies. RESULTS A total of 10 553 patients from 36 clinical trials were included. The overall incidence of all grade and high grade CHF associated with VEGFR-TKIs was 3.2% (95% CI 1.8%, 5.8%) and 1.4% (95% CI 0.9%, 2.3%), respectively. The use of VEGFR-TKIs significantly increased the risk of developing all grade (OR 2.37, 95% CI 1.76, 3.20, P < 0.001) and high grade (OR 3.51, 95% CI 1.74, 7.05, P < 0.001) CHF. In subgroup analyses, the risk of CHF did not significantly vary with tumour types (P = 0.071 for all grade; P = 0.72 for high grade) and VEGFR-TKIs (P = 0.55 for all grade; P = 0.99 for high grade). Meta-regression indicated that CHF might possibly occur early in the treatment of VEGFR-TKIs. No evidence of publication bias was observed. CONCLUSION The use of VEGFR-TKIs is associated with a significantly increased risk of developing congestive heart failure in cancer patients. Clinicians should be aware of this risk and provide close monitoring in patients receiving these therapies.
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Affiliation(s)
- Wei-Xiang Qi
- Department of Oncology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, no. 600, Yishan Road, Shanghai, 200233, China
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11
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Alderson HV, Ritchie JP, Kalra PA. Revascularization as a treatment to improve renal function. Int J Nephrol Renovasc Dis 2014; 7:89-99. [PMID: 24600242 PMCID: PMC3933706 DOI: 10.2147/ijnrd.s35633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
An aging atherosclerosis-prone population has led to an increase in the prevalence of atherosclerotic renovascular disease (ARVD). Medical management of this disease, as with other atherosclerotic conditions, has improved over the past decade. Despite the widespread availability of endovascular revascularization procedures, there is inconsistent evidence of benefit in ARVD and no clear consensus of opinion as to the best way to select suitable patients for revascularization. Several published randomized controlled trials have attempted to provide clearer evidence for best practice in ARVD, but they have done so with varying clarity and success. In this review, we provide an overview of ARVD and its effect on renal function. We present the currently available evidence for best practice in the management of patients with ARVD with a particular focus on revascularization as a treatment to improve renal function. We provide a brief overview of the evidence for revascularization in other causes of renal artery stenosis.
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Affiliation(s)
- Helen V Alderson
- The University of Manchester, Manchester Academic Health Sciences Centre, Vascular Research Group, Department of Renal Medicine, Salford Royal NHS Foundation Trust, Salford, UK
| | - James P Ritchie
- The University of Manchester, Manchester Academic Health Sciences Centre, Vascular Research Group, Department of Renal Medicine, Salford Royal NHS Foundation Trust, Salford, UK
| | - Philip A Kalra
- The University of Manchester, Manchester Academic Health Sciences Centre, Vascular Research Group, Department of Renal Medicine, Salford Royal NHS Foundation Trust, Salford, UK
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Eirin A, Lerman LO. Darkness at the end of the tunnel: poststenotic kidney injury. Physiology (Bethesda) 2013; 28:245-53. [PMID: 23817799 DOI: 10.1152/physiol.00010.2013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Renal artery stenosis remains an important contributor to renal failure in the elderly population, but uncertainty continues to surround the mechanisms underlying progressive renal dysfunction. Here, we present the current understanding of the pathogenic mechanisms responsible for renal injury in these patients, with emphasis on those involved in disease progression.
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Affiliation(s)
- Alfonso Eirin
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
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13
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Tocchetti CG, Gallucci G, Coppola C, Piscopo G, Cipresso C, Maurea C, Giudice A, Iaffaioli RV, Arra C, Maurea N. The emerging issue of cardiac dysfunction induced by antineoplastic angiogenesis inhibitors. Eur J Heart Fail 2013; 15:482-9. [PMID: 23325019 DOI: 10.1093/eurjhf/hft008] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Left ventricular dysfunction from anticancer drugs has emerged as a relevant problem in the clinical and scientific communities. Anthracycline toxicity has always been the most relevant, but with the increasing use of biological targeted therapies in treatment protocols, with an increasing number of cancer survivors, new toxicities have been increasing in more recent years. Cardiomyopathy after ErbB2 inhibitors has been intensively studied. Another important class of biological anticancer drugs are vascular endothelial growth factor (VEGF) inhibitors. VEGF signalling is crucial for vascular growth, but it also has a major impact on myocardial function. Also, it is important to note that such angiogenesis inhibitors are multitargeted in most cases, and can produce a broad spectrum of cardiovascular side effects. Here we review the mechanisms and pathophysiology of the most significant cardiotoxic effects of antiangiogenic drugs, and particular attention is drawn to LV dysfunction, discussing the assessment and management on the basis of the most recent cardio-oncological findings and heart failure guidelines.
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Affiliation(s)
- Carlo G Tocchetti
- Division of Cardiology, National Cancer Institute, Pascale Foundation, Naples, Italy.
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14
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S1P1 and S1P3 are potential markers of cardiac microangiopathy in diabetes. Med Hypotheses 2012; 79:168-70. [DOI: 10.1016/j.mehy.2012.04.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 04/07/2012] [Accepted: 04/13/2012] [Indexed: 11/30/2022]
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15
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Kelsen S, He X, Chade AR. Early superoxide scavenging accelerates renal microvascular rarefaction and damage in the stenotic kidney. Am J Physiol Renal Physiol 2012; 303:F576-83. [PMID: 22622460 DOI: 10.1152/ajprenal.00154.2012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Renal artery stenosis (RAS), the main cause of chronic renovascular disease (RVD), is associated with significant oxidative stress. Chronic RVD induces renal injury partly by promoting renal microvascular (MV) damage and blunting MV repair in the stenotic kidney. We tested the hypothesis that superoxide anion plays a pivotal role in MV dysfunction, reduction of MV density, and progression of renal injury in the stenotic kidney. RAS was induced in 14 domestic pigs and observed for 6 wk. Seven RAS pigs were chronically treated with the superoxide dismutase mimetic tempol (RAS+T) to reduce oxidative stress. Single-kidney hemodynamics and function were quantified in vivo using multidetector computer tomography (CT) and renal MV density was quantified ex vivo using micro-CT. Expression of angiogenic, inflammatory, and apoptotic factors was measured in renal tissue, and renal apoptosis and fibrosis were quantified in tissue sections. The degree of RAS and blood pressure were similarly increased in RAS and RAS+T. Renal blood flow (RBF) and glomerular filtration rate (GFR) were reduced in the stenotic kidney (280.1 ± 36.8 and 34.2 ± 3.1 ml/min, P < 0.05 vs. control). RAS+T kidneys showed preserved GFR (58.5 ± 6.3 ml/min, P = not significant vs. control) but a similar decreases in RBF (293.6 ± 85.2 ml/min) and further decreases in MV density compared with RAS. These changes were accompanied by blunted angiogenic signaling and increased apoptosis and fibrosis in the stenotic kidney of RAS+T compared with RAS. The current study shows that tempol administration provided limited protection to the stenotic kidney. Despite preserved GFR, renal perfusion was not improved by tempol, and MV density was further reduced compared with untreated RAS, associated with increased renal apoptosis and fibrosis. These results suggest that a tight balance of the renal redox status is necessary for a normal MV repair response to injury, at least at the early stage of RVD, and raise caution regarding antioxidant strategies in RAS.
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Affiliation(s)
- Silvia Kelsen
- Dept. of Physiology and Biophysics, Univ. of Mississippi Medical Center, 2500 North State St., Jackson, MS 39216-4505, USA
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16
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Grenier J. Complications cardiaques et vasculaires des antiangiogéniques (à l’exception des effets rénaux et des complications hémorragiques). ONCOLOGIE 2012. [DOI: 10.1007/s10269-012-2145-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Leonard BL, Smaill BH, LeGrice IJ. Structural remodeling and mechanical function in heart failure. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2012; 18:50-67. [PMID: 22258722 DOI: 10.1017/s1431927611012438] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The cardiac extracellular matrix (ECM) is the three-dimensional scaffold that defines the geometry and muscular architecture of the cardiac chambers and transmits forces produced during the cardiac cycle throughout the heart wall. The cardiac ECM is an active system that responds to the stresses to which it is exposed and in the normal heart is adapted to facilitate efficient mechanical function. There are marked differences in the short- and medium-term changes in ventricular geometry and cardiac ECM that occur as a result of volume overload, hypertension, and ischemic cardiomyopathy. Despite this, there is a widespread view that a common remodeling "phenotype" governs the final progression to end-stage heart failure in different forms of heart disease. In this review article, we make the case that this interpretation is not consistent with the clinical and experimental data on the topic. We argue that there is a need for new theoretical and experimental models that will enable stresses acting on the ECM and resultant deformations to be estimated more accurately and provide better spatial resolution of local signaling mechanisms that are activated as a result. These developments are necessary to link the effects of structural remodeling with altered cardiac mechanical function.
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Affiliation(s)
- Bridget Louise Leonard
- Auckland Bioengineering Institute, University of Auckland, Private Bag 92019, Auckland 1023, New Zealand.
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18
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Chade AR. Renovascular disease, microcirculation, and the progression of renal injury: role of angiogenesis. Am J Physiol Regul Integr Comp Physiol 2011; 300:R783-90. [PMID: 21307362 DOI: 10.1152/ajpregu.00657.2010] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Emerging evidence supports the pivotal role of renal microvascular disease as a determinant of tubulo-interstitial and glomerular fibrosis in chronic kidney disease. An intact microcirculation is vital to restore blood flow to the injured tissues, which is a crucial step to achieve a successful repair response. The purpose of this review is to discuss the impact and mechanisms of the functional and structural changes of the renal microvascular network, as well as the role of these changes in the progression and irreversibility of renal injury. Damage of the renal microcirculation and deterioration of the angiogenic response may constitute early steps in the complex pathways involved in progressive renal injury. There is limited but provocative evidence that stimulation of vascular proliferation and repair may stabilize renal function and slow the progression of renal disease. The feasibility of novel potential therapeutic interventions for stabilizing the renal microvasculature is also discussed. Targeted interventions to enhance endogenous renoprotective mechanisms focused on the microcirculation, such as cell-based therapy or the use of angiogenic cytokines have shown promising results in some experimental and clinical settings.
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Affiliation(s)
- Alejandro R Chade
- Department of Physiology and Biophysics, Center for Excellence in Cardiovascular-Renal Research, and University of Mississippi Medical Center, Jackson, Mississippi 39216-4505, USA.
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Fendler JP, Malavaud B, Gimel P, Duclos B, Chevreau C, Pignot G. [Renal cell carcinoma: antiangiogenic therapies and management of the complications. A case report]. Prog Urol 2010; 20 Suppl 1:S27-32. [PMID: 20493440 DOI: 10.1016/s1166-7087(10)70022-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Direct side effects of the inhibition of activation of VEGF receptors are well known and could be easily explained (HTA). The indirect toxicity of the inhibitors of tyrosinekinases is much less known and several hypotheses appear. Usually, the common side effects of the inhibitors of tyrosine-kinases can be easily managed and are reversible when the treatment is stopped. Their management is essentially based on prevention measures. It is necessary to stop definitively or temporarily the treatment in case of intensification of pre-existing comorbidities or side effects of rank 3 or 4. There is no predictive factor of treatment toxicity and, at the moment, there is thus no indication in a previous dose adaptation.
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Affiliation(s)
- J-P Fendler
- Service d'Urologie, Centre Hospitalier Saint-Joseph/Saint-Luc, quai Claude-Bernard, Lyon cedex 7, France
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Iliescu R, Fernandez SR, Kelsen S, Maric C, Chade AR. Role of renal microcirculation in experimental renovascular disease. Nephrol Dial Transplant 2009; 25:1079-87. [PMID: 19934087 DOI: 10.1093/ndt/gfp605] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Renal artery stenosis (RAS) causes renal injury partly via microvascular (MV) endothelial dysfunction and damage. Vascular endothelial growth factor (VEGF) is crucial for preservation of microvasculature and promotes vascular proliferation and endothelial repair. We have previously shown that MV rarefaction is associated with decreased VEGF in the kidney exposed to chronic RAS, accompanied by deteriorated renal function and fibrosis. We hypothesized that preserving the renal microcirculation in the stenotic kidney will halt the progression of renal damage. METHODS Unilateral RAS was induced in 16 pigs. In eight, VEGF (0.05 micrograms/kg) was infused intra-renally at the onset of RAS. After 6 weeks, single-kidney haemodynamics and function were assessed using in vivo multi-detector computed tomography (CT). Renal microvessels, angiogenic pathways and morphology were investigated ex vivo using micro-CT, real-time PCR and histology. RESULTS Blood pressure and degree of RAS was similar in RAS and RAS + VEGF pigs. Single-kidney renal blood flow (RBF) and glomerular filtration rate (GFR) were reduced in RAS compared to Normal (221.1 +/- 46.5 and 29.9 +/- 3.8 vs. 522.5 +/- 60.9 and 49.3 +/- 3.4 mL/min, respectively, P < 0.05), accompanied by decreased cortical MV density and increased renal fibrosis. Pre-emptive administration of VEGF preserved MV architecture, attenuated fibrosis and normalized RBF and GFR (510.8 +/- 50.9 and 39.9.1 +/- 4.1 mL/min, P = not significant vs. Normal). CONCLUSIONS This study underscores the importance of the renal microcirculation in renovascular disease. Intra-renal administration of VEGF preserved renal MV architecture and function of the stenotic kidney, which in turn preserved renal haemodynamics and function and decreased renal fibrosis. These observations suggest that preventing renal MV loss may be a potential target for therapeutic approaches for patients with chronic renovascular disease.
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Affiliation(s)
- Radu Iliescu
- The Department of Physiology and Biophysics, Center for Excellence in Cardiovascular-Renal Research, University of Mississippi Medical Center, Jackson, MS, USA
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Zhu XY, Daghini E, Chade AR, Napoli C, Ritman EL, Lerman A, Lerman LO. Simvastatin prevents coronary microvascular remodeling in renovascular hypertensive pigs. J Am Soc Nephrol 2007; 18:1209-17. [PMID: 17344424 DOI: 10.1681/asn.2006090976] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Patients with hypertension and chronic kidney disease are at risk for cardiovascular diseases, possibly related to inflammation. Statins have beneficial anti-inflammatory effects on vascular structure regardless of cholesterol reduction. It was hypothesized that alterations in myocardial microvascular structure in swine renovascular hypertension (RVH) would be improved by simvastatin treatment. Three groups of pigs were studied after 12 wk: normal (n = 7), RVH (n = 7), or RVH+simvastatin (RVH+S; 80 mg/d; n = 6). Left ventricular muscle mass and myocardial perfusion were determined in vivo using electron beam computed tomography, and myocardial samples then were scanned ex vivo using micro-computed tomography for measurement of the spatial density of myocardial microvessels (80 to 500 microm) in situ. Capillary density and myocardial expression of inflammatory and growth factors were determined in myocardial tissue. The effects of simvastatin on inflammation-induced tube formation were evaluated in vitro in human umbilical vein endothelial cells that were exposed to TNF-alpha. RVH and RVH+S had similarly increased arterial pressure and serum creatinine. However, left ventricular hypertrophy was prevented by simvastatin, and myocardial perfusion was increased. Compared with normal, RVH showed increased spatial density of microvessels (169.6 +/- 21 versus 107.7 +/- 15.2 vessels/cm(2); P < 0.05), which was decreased in RVH+S (72.5 +/- 14.9 vessels/cm(2)), whereas capillary density remained similar to normal. RVH also increased myocardial expression of inflammatory and growth factors, which were reversed by simvastatin. Furthermore, simvastatin attenuated TNF-alpha-induced angiogenesis in vitro. Simvastatin prevents myocardial microvascular remodeling and hypertrophy in experimental RVH independent of lipid lowering. This protective effect is partly mediated by blunted expression as well as angiogenic activity of inflammatory cytokines.
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Affiliation(s)
- Xiang-Yang Zhu
- Division of Nephrology and Hypertension, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
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Schiekofer S, Shiojima I, Sato K, Galasso G, Oshima Y, Walsh K. Microarray analysis of Akt1 activation in transgenic mouse hearts reveals transcript expression profiles associated with compensatory hypertrophy and failure. Physiol Genomics 2006; 27:156-70. [PMID: 16882883 DOI: 10.1152/physiolgenomics.00234.2005] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
To investigate molecular mechanisms involved in the development of cardiac hypertrophy and heart failure, we developed a tetracycline-regulated transgenic system to conditionally switch a constitutively active form of the Akt1 protein kinase on or off in the adult heart. Short-term activation (2 wk) of Akt1 resulted in completely reversible hypertrophy with maintained contractility. In contrast, chronic Akt1 activation (6 wk) induced extensive cardiac hypertrophy, severe contractile dysfunction, and massive interstitial fibrosis. The focus of this study was to create a transcript expression profile of the heart as it undergoes reversible Akt1-mediated hypertrophy and during the transition from compensated hypertrophy to heart failure. Heart tissue was analyzed before transgene induction, 2 wk after transgene induction, 2 wk of transgene induction followed by 2 days of repression, 6 wk after transgene induction, and 6 wk of transgene induction followed by 2 wk of repression. Acute overexpression of Akt1 (2 wk) leads to changes in the expression of 826 transcripts relative to noninduced hearts, whereas chronic induction (6 wk) led to changes in the expression of 1,611, of which 65% represented transcripts that were regulated during the pathological phase of heart growth. Another set of genes identified was uniquely regulated during heart regression but not growth, indicating that nonoverlapping transcription programs participate in the processes of cardiac hypertrophy and atrophy. These data define the gene regulatory programs downstream of Akt that control heart size and contribute to the transition from compensatory hypertrophy to heart failure.
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Affiliation(s)
- Stephan Schiekofer
- Molecular Cardiology/Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts 02118, USA
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