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Müller M, Donhauser E, Maske T, Bischof C, Dumitrescu D, Rudolph V, Klinke A. Mitochondrial Integrity Is Critical in Right Heart Failure Development. Int J Mol Sci 2023; 24:11108. [PMID: 37446287 PMCID: PMC10342493 DOI: 10.3390/ijms241311108] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/27/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Molecular processes underlying right ventricular (RV) dysfunction (RVD) and right heart failure (RHF) need to be understood to develop tailored therapies for the abatement of mortality of a growing patient population. Today, the armament to combat RHF is poor, despite the advancing identification of pathomechanistic processes. Mitochondrial dysfunction implying diminished energy yield, the enhanced release of reactive oxygen species, and inefficient substrate metabolism emerges as a potentially significant cardiomyocyte subcellular protagonist in RHF development. Dependent on the course of the disease, mitochondrial biogenesis, substrate utilization, redox balance, and oxidative phosphorylation are affected. The objective of this review is to comprehensively analyze the current knowledge on mitochondrial dysregulation in preclinical and clinical RVD and RHF and to decipher the relationship between mitochondrial processes and the functional aspects of the right ventricle (RV).
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Affiliation(s)
- Marion Müller
- Agnes Wittenborg Institute for Translational Cardiovascular Research, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany; (M.M.)
- Clinic for General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany
| | - Elfi Donhauser
- Agnes Wittenborg Institute for Translational Cardiovascular Research, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany; (M.M.)
- Clinic for General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany
| | - Tibor Maske
- Agnes Wittenborg Institute for Translational Cardiovascular Research, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany; (M.M.)
- Clinic for General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany
| | - Cornelius Bischof
- Agnes Wittenborg Institute for Translational Cardiovascular Research, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany; (M.M.)
- Clinic for General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany
| | - Daniel Dumitrescu
- Clinic for General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany
| | - Volker Rudolph
- Agnes Wittenborg Institute for Translational Cardiovascular Research, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany; (M.M.)
- Clinic for General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany
| | - Anna Klinke
- Agnes Wittenborg Institute for Translational Cardiovascular Research, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany; (M.M.)
- Clinic for General and Interventional Cardiology/Angiology, Herz- und Diabeteszentrum NRW, University Hospital of the Ruhr-Universität Bochum, 32545 Bad Oeynhausen, Germany
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Kurz FT, Aon MA, Schlemmer HP, Jende JME, O'Rourke B, Armoundas AA. Fractal dynamics of individual mitochondrial oscillators measure local inter-mitochondrial coupling. Biophys J 2023; 122:1459-1469. [PMID: 36905121 PMCID: PMC10147834 DOI: 10.1016/j.bpj.2023.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 09/29/2022] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
Mitochondrial inner membrane potentials in cardiomyocytes may oscillate in cycles of depolarization/repolarization when the mitochondrial network is exposed to metabolic or oxidative stress. The frequencies of such oscillations are dynamically changing while clusters of weakly coupled mitochondrial oscillators adjust to a common phase and frequency. Across the cardiac myocyte, the averaged signal of the mitochondrial population follows self-similar or fractal dynamics; however, fractal properties of individual mitochondrial oscillators have not yet been examined. We show that the largest synchronously oscillating cluster exhibits a fractal dimension, D, that is indicative of self-similar behavior with D=1.27±0.11, in contrast to the remaining network mitochondria whose fractal dimension is close to that of Brownian noise, D=1.58±0.10. We further demonstrate that fractal behavior is correlated with local coupling mechanisms, whereas it is only weakly linked to measures of functional connections between mitochondria. Our findings suggest that individual mitochondrial fractal dimensions may serve as a simple measure of local mitochondrial coupling.
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Affiliation(s)
- Felix T Kurz
- German Cancer Research Center, Division of Radiology, Heidelberg, Germany; Massachusetts General Hospital, Cardiovascular Research Center, Harvard Medical School, Charlestown, Massachusetts.
| | - Miguel A Aon
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, Maryland
| | | | - Johann M E Jende
- Heidelberg University Hospital, Department of Neuroradiology, Heidelberg, Germany
| | - Brian O'Rourke
- Department of Medicine, Division of Cardiology, Johns Hopkins University, Baltimore, Maryland
| | - Antonis A Armoundas
- Massachusetts General Hospital, Cardiovascular Research Center, Harvard Medical School, Charlestown, Massachusetts; Broad Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts.
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3
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Fu S, Deng H, Bertolini I, Perego M, Chen ES, Sanseviero E, Mostafa A, Alicea-Torres K, Garcia-Gerique L, Stone EL, Kossenkov AV, Schug ZT, Nam B, Mulligan C, Altieri DC, Nefedova Y, Gabrilovich DI. Syntaphilin Regulates Neutrophil Migration in Cancer. Cancer Immunol Res 2023; 11:278-289. [PMID: 36548516 PMCID: PMC9991994 DOI: 10.1158/2326-6066.cir-22-0035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 08/15/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
Pathologically activated neutrophils (PMN) with immunosuppressive activity, which are termed myeloid-derived suppressor cells (PMN-MDSC), play a critical role in regulating tumor progression. These cells have been implicated in promoting tumor metastases by contributing to premetastatic niche formation. This effect was facilitated by enhanced spontaneous migration of PMN from bone marrow to the premetastatic niches during the early-stage of cancer development. The molecular mechanisms underpinning this phenomenon remained unclear. In this study, we found that syntaphilin (SNPH), a cytoskeletal protein previously known for anchoring mitochondria to the microtubule in neurons and tumor cells, could regulate migration of PMN. Expression of SNPH was decreased in PMN from tumor-bearing mice and patients with cancer as compared with PMN from tumor-free mice and healthy donors, respectively. In Snph-knockout (SNPH-KO) mice, spontaneous migration of PMN was increased and the mice showed increased metastasis. Mechanistically, in SNPH-KO mice, the speed and distance travelled by mitochondria in PMN was increased, rates of oxidative phosphorylation and glycolysis were elevated, and generation of adenosine was increased. Thus, our study reveals a molecular mechanism regulating increased migratory activity of PMN during cancer progression and suggests a novel therapeutic targeting opportunity.
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Affiliation(s)
- Shuyu Fu
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
- Oncology R&D, AstraZeneca, 1 Medimmune Way, Gaithersburg, MD, 20878
| | - Hui Deng
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | - Irene Bertolini
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | - Michela Perego
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | - Eric S. Chen
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | | | - Ali Mostafa
- Oncology R&D, AstraZeneca, 1 Medimmune Way, Gaithersburg, MD, 20878
| | - Kevin Alicea-Torres
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
- University of Puerto Rico at Humacao
| | - Laura Garcia-Gerique
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | - Erica L. Stone
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | - Andrew V. Kossenkov
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | - Zachary T. Schug
- Molecular and Cellular Oncogenesis Program, Wistar Institute, Philadelphia, PA, USA, 19104
| | - Brian Nam
- Helen F Graham Cancer Center and Research Institute, Christiana Care, Newark, DE, USA 19713
| | - Charles Mulligan
- Helen F Graham Cancer Center and Research Institute, Christiana Care, Newark, DE, USA 19713
| | - Dario C. Altieri
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
| | - Yulia Nefedova
- Immunology, Microenvironment and Metastasis Program, Wistar Institute, Philadelphia, PA, 19104
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Kurz FT, Hahn A. Advanced Computational Methods to Evaluate Vascular Heterogeneity in Tumor Tissue Based on Single Plane Illumination Microscopy. Methods Mol Biol 2023; 2660:283-294. [PMID: 37191805 DOI: 10.1007/978-1-0716-3163-8_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
During tumor growth, the complex composition of vasculature is prone to dynamic changes due to mechanic and biochemical challenges. Perivascular invasion of tumor cells to co-opt existing vasculature, but also formation of de-novo vasculature and other effects on the vascular network, may lead to altered geometric vessel properties as well as changes in vascular network topology, which is defined by vascular multifurcations and connections between vessel segments. The intricate organization and heterogeneity of the vascular network can be analyzed with advanced computational methods to uncover vascular network signatures that may allow differentiating between pathological and physiological vessel regions. Herein, we present a protocol to evaluate vascular heterogeneity in whole vascular networks, using morphological and topological measures. The protocol was developed for single plane illumination microscopy images of mice brain vasculature but can be applied to any vascular network.
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Affiliation(s)
- Felix T Kurz
- Division of Radiology, German Cancer Research Center, Heidelberg, Germany.
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Rogov AG, Goleva TN, Epremyan KK, Kireev II, Zvyagilskaya RA. Propagation of Mitochondria-Derived Reactive Oxygen Species within the Dipodascus magnusii Cells. Antioxidants (Basel) 2021; 10:antiox10010120. [PMID: 33467672 PMCID: PMC7830518 DOI: 10.3390/antiox10010120] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 12/04/2022] Open
Abstract
Mitochondria are considered to be the main source of reactive oxygen species (ROS) in the cell. It was shown that in cardiac myocytes exposed to excessive oxidative stress, ROS-induced ROS release is triggered. However, cardiac myocytes have a network of densely packed organelles that do not move, which is not typical for the majority of eukaryotic cells. The purpose of this study was to trace the spatiotemporal development (propagation) of prooxidant-induced oxidative stress and its interplay with mitochondrial dynamics. We used Dipodascus magnusii yeast cells as a model, as they have advantages over other models, including a uniquely large size, mitochondria that are easy to visualize and freely moving, an ability to vigorously grow on well-defined low-cost substrates, and high responsibility. It was shown that prooxidant-induced oxidative stress was initiated in mitochondria, far preceding the appearance of generalized oxidative stress in the whole cell. For yeasts, these findings were obtained for the first time. Preincubation of yeast cells with SkQ1, a mitochondria-addressed antioxidant, substantially diminished production of mitochondrial ROS, while only slightly alleviating the generalized oxidative stress. This was expected, but had not yet been shown. Importantly, mitochondrial fragmentation was found to be primarily induced by mitochondrial ROS preceding the generalized oxidative stress development.
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Affiliation(s)
- Anton G. Rogov
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
| | - Tatiana N. Goleva
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
| | - Khoren K. Epremyan
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
| | - Igor I. Kireev
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Vorobyevy Gory 1, Moscow 119992, Russia;
| | - Renata A. Zvyagilskaya
- Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences 33, bld. 2 Leninsky Ave., Moscow 119071, Russia; (A.G.R.); (T.N.G.); (K.K.E.)
- Correspondence:
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De la Fuente S, Sheu SS. SR-mitochondria communication in adult cardiomyocytes: A close relationship where the Ca 2+ has a lot to say. Arch Biochem Biophys 2019; 663:259-268. [PMID: 30685253 PMCID: PMC6377816 DOI: 10.1016/j.abb.2019.01.026] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 01/14/2019] [Accepted: 01/22/2019] [Indexed: 02/07/2023]
Abstract
In adult cardiomyocytes, T-tubules, junctional sarcoplasmic reticulum (jSR), and mitochondria juxtapose each other and form a unique and highly repetitive functional structure along the cell. The close apposition between jSR and mitochondria creates high Ca2+ microdomains at the contact sites, increasing the efficiency of the excitation-contraction-bioenergetics coupling, where the Ca2+ transfer from SR to mitochondria plays a critical role. The SR-mitochondria contacts are established through protein tethers, with mitofusin 2 the most studied SR-mitochondrial "bridge", albeit controversial. Mitochondrial Ca2+ uptake is further optimized with the mitochondrial Ca2+ uniporter preferentially localized in the jSR-mitochondria contact sites and the mitochondrial Na+/Ca2+ exchanger localized away from these sites. Despite all these unique features facilitating the privileged transport of Ca2+ from SR to mitochondria in adult cardiomyocytes, the question remains whether mitochondrial Ca2+ concentrations oscillate in synchronicity with cytosolic Ca2+ transients during heartbeats. Proper Ca2+ transfer controls not only the process of mitochondrial bioenergetics, but also of mitochondria-mediated cell death, autophagy/mitophagy, mitochondrial fusion/fission dynamics, reactive oxygen species generation, and redox signaling, among others. Our review focuses specifically on Ca2+ signaling between SR and mitochondria in adult cardiomyocytes. We discuss the physiological and pathological implications of this SR-mitochondrial Ca2+ signaling, research gaps, and future trends.
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Affiliation(s)
- Sergio De la Fuente
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
| | - Shey-Shing Sheu
- Center for Translational Medicine, Department of Medicine, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
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Wang Y, Li Y, He C, Gou B, Song M. Mitochondrial regulation of cardiac aging. Biochim Biophys Acta Mol Basis Dis 2018; 1865:1853-1864. [PMID: 30593894 DOI: 10.1016/j.bbadis.2018.12.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 12/03/2018] [Accepted: 12/04/2018] [Indexed: 12/13/2022]
Abstract
Aging is associated with progressive decline in cardiac structure and function. Accumulating evidence in model organisms and humans links cardiac aging to mitochondrial regulation, encompassing a complex interplay of mitochondrial morphology, mitochondrial ROS, mitochondrial DNA mutations, mitochondrial unfolded protein response, nicotinamide adenine dinucleotide levels and sirtuins, as well as mitophagy. This review summarizes the recent discoveries on the mitochondrial regulation of cardiac aging and the possible molecular mechanisms underlying the anti-aging effects, as well as the potential interventions that alleviate aging-related cardiac diseases and attenuate cardiac aging via the regulation of mitochondria.
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Affiliation(s)
- Yuhan Wang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute of Stem cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Forestry University, Beijing 100083, China
| | - Yujing Li
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute of Stem cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; University of Science and Technology of China, Anhui 230026, China
| | - Chuting He
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute of Stem cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Gou
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute of Stem cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Moshi Song
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute of Stem cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Kurz FT, Aon MA, O'Rourke B, Armoundas AA. Assessing Spatiotemporal and Functional Organization of Mitochondrial Networks. Methods Mol Biol 2018; 1782:383-402. [PMID: 29851013 PMCID: PMC7003721 DOI: 10.1007/978-1-4939-7831-1_23] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
The functional and spatiotemporal organization of mitochondrial redox signaling networks can be studied in detail in cardiac myocytes and neurons by assessing the time-resolved signaling traits of their individual mitochondrial components. Perturbations of the mitochondrial network through oxidative stress can lead to coordinated, cluster-bound behavior in the form of synchronized limit-cycle oscillations of mitochondrial inner membrane potentials. These oscillations are facilitated by both structural coupling through changes in the local redox balance and signaling microdomains and functional coupling that is yet poorly understood. Thus, quantifiable measures of both coupling mechanisms, local dynamic mitochondrial coupling constants and functional clustering coefficients, are likely to offer valuable information on mitochondrial network organization. We provide step-by-step methodologies on how to acquire and assess these measures for inner membrane potential fluorescence fluctuations in laser-scanning two-photon microscope recordings of cardiac myocytes and neurons, that can be applied to other tissues as well.
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MESH Headings
- Animals
- Cluster Analysis
- Fluorescent Dyes/chemistry
- Guinea Pigs
- Image Processing, Computer-Assisted/instrumentation
- Image Processing, Computer-Assisted/methods
- Membrane Potential, Mitochondrial
- Microscopy, Confocal/instrumentation
- Microscopy, Confocal/methods
- Microscopy, Fluorescence/instrumentation
- Microscopy, Fluorescence/methods
- Mitochondria, Heart/metabolism
- Mitochondrial Dynamics
- Models, Biological
- Myocytes, Cardiac/cytology
- Neurons
- Reactive Oxygen Species/metabolism
- Signal Transduction
- Software
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Affiliation(s)
- Felix T Kurz
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.
- Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
| | - Miguel A Aon
- Laboratory of Cardiovascular Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Brian O'Rourke
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Antonis A Armoundas
- Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.
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