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Lin S, Landon B, Zhang H, Jin K. Pericyte Dysfunction Contributes to Vascular Cognitive Impairment Induced by Chronic Cerebral Hypoperfusion in Rats. Aging Dis 2024; 15:1357-1372. [PMID: 37611900 PMCID: PMC11081149 DOI: 10.14336/ad.2023.0821-1] [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: 07/03/2023] [Accepted: 08/21/2023] [Indexed: 08/25/2023] Open
Abstract
Vascular cognitive impairment (VCI) encompasses cognitive disorders associated with cerebrovascular disease, often manifesting as white matter lesions (WMLs), irrespective of precise triggers. The integrity of white matter is essential for neural communication and cognitive function maintenance. Persistent cerebral hypoperfusion-induced WMLs are now acknowledged as a key driver of VCI and dementia, though their exact formation mechanism remains unclear. Recent studies link pericyte dysfunction to diverse brain disorders like Alzheimer disease. However, the exact pathological connection between pericyte dysfunction and cognitive impairment in VCI remains unexplored. In this study, we aimed to examine whether pericyte dysfunction could impact WMLs and cognitive impairment in a rat VCI model. Using a rat model of chronic cerebral hypoperfusion-induced VCI through two-vessel occlusion (2VO), we verified that 2VO induced both WMLs and cognitive impairment. Notably, the number of pericytes in the brain was significantly altered after 2VO. Furthermore, we observed significantly increased capillary constrictions at pericyte bodies in the brains of 2VO-induced rats compared to sham-operated rats, accompanied by reduced cerebral blood flow (CBF). To tackle this issue, we administered CGS21680, a specific adenosine A2A subtype receptor agonist, intranasally twice a day for 7 days. We found that rats treated with CGS21680 exhibited a significant increase in CBF at 7 and 14 days after 2VO, compared to the vehicle group. Moreover, capillary lumens beneath pericytes also increased after the CGS21680 treatment. Importantly, the treatment led to substantial improvements in WMLs and cognitive impairment compared to the vehicle group. Our findings suggest a critical role of pericyte dysfunction in WMLs and cognitive impairment within the rat VCI model. This insight contributes to our understanding of pathogenesis and offers prospects for targeted intervention in VCI.
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Affiliation(s)
- Siyang Lin
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.
| | - Benjamin Landon
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.
| | - Hongxia Zhang
- Department of Neurological Surgery, University of California, San Francisco, CA 94158, USA.
| | - Kunlin Jin
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.
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2
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Shridhar P, Glennon MS, Pal S, Waldron CJ, Chetkof EJ, Basak P, Clavere NG, Banerjee D, Gingras S, Becker JR. MDM2 Regulation of HIF Signaling Causes Microvascular Dysfunction in Hypertrophic Cardiomyopathy. Circulation 2023; 148:1870-1886. [PMID: 37886847 PMCID: PMC10691664 DOI: 10.1161/circulationaha.123.064332] [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: 02/07/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND Microvasculature dysfunction is a common finding in pathologic remodeling of the heart and is thought to play an important role in the pathogenesis of hypertrophic cardiomyopathy (HCM), a disease caused by sarcomere gene mutations. We hypothesized that microvascular dysfunction in HCM was secondary to abnormal microvascular growth and could occur independent of ventricular hypertrophy. METHODS We used multimodality imaging methods to track the temporality of microvascular dysfunction in HCM mouse models harboring mutations in the sarcomere genes Mybpc3 (cardiac myosin binding protein C3) or Myh6 (myosin heavy chain 6). We performed complementary molecular methods to assess protein quantity, interactions, and post-translational modifications to identify mechanisms regulating this response. We manipulated select molecular pathways in vivo using both genetic and pharmacological methods to validate these mechanisms. RESULTS We found that microvascular dysfunction in our HCM models occurred secondary to reduced myocardial capillary growth during the early postnatal time period and could occur before the onset of myocardial hypertrophy. We discovered that the E3 ubiquitin protein ligase MDM2 (murine double minute 2) dynamically regulates the protein stability of both HIF1α (hypoxia-inducible factor 1 alpha) and HIF2α (hypoxia-inducible factor 2 alpha)/EPAS1 (endothelial PAS domain protein 1) through canonical and noncanonical mechanisms. The resulting HIF imbalance leads to reduced proangiogenic gene expression during a key period of myocardial capillary growth. Reducing MDM2 protein levels by genetic or pharmacological methods normalized HIF protein levels and prevented the development of microvascular dysfunction in both HCM models. CONCLUSIONS Our results show that sarcomere mutations induce cardiomyocyte MDM2 signaling during the earliest stages of disease, and this leads to long-term changes in the myocardial microenvironment.
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Affiliation(s)
- Puneeth Shridhar
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, PA (P.S., J.R.B.)
| | - Michael S. Glennon
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Soumojit Pal
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Christina J. Waldron
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Ethan J. Chetkof
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Payel Basak
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Nicolas G. Clavere
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Dipanjan Banerjee
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Sebastien Gingras
- Department of Immunology (S.G.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
| | - Jason R. Becker
- Division of Cardiology, Department of Medicine, and Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute (P.S., M.S.G., S.P., C.J.W., E.J.C., P.B., N.C.G., D.B., J.R.B.), University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, PA
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, PA (P.S., J.R.B.)
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3
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Serafini E, Corti A, Gallo D, Chiastra C, Li XC, Casarin S. An agent-based model of cardiac allograft vasculopathy: toward a better understanding of chronic rejection dynamics. Front Bioeng Biotechnol 2023; 11:1190409. [PMID: 37771577 PMCID: PMC10523786 DOI: 10.3389/fbioe.2023.1190409] [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: 03/20/2023] [Accepted: 08/17/2023] [Indexed: 09/30/2023] Open
Abstract
Cardiac allograft vasculopathy (CAV) is a coronary artery disease affecting 50% of heart transplant (HTx) recipients, and it is the major cause of graft loss. CAV is driven by the interplay of immunological and non-immunological factors, setting off a cascade of events promoting endothelial damage and vascular dysfunction. The etiology and evolution of tissue pathology are largely unknown, making disease management challenging. So far, in vivo models, mostly mouse-based, have been widely used to study CAV, but they are resource-consuming, pose many ethical issues, and allow limited investigation of time points and important biomechanical measurements. Recently, agent-based models (ABMs) proved to be valid computational tools for deciphering mechanobiological mechanisms driving vascular adaptation processes at the cell/tissue level, augmenting cost-effective in vivo lab-based experiments, at the same time guaranteeing richness in observation time points and low consumption of resources. We hypothesize that integrating ABMs with lab-based experiments can aid in vivo research by overcoming those limitations. Accordingly, this work proposes a bidimensional ABM of CAV in a mouse coronary artery cross-section, simulating the arterial wall response to two distinct stimuli: inflammation and hemodynamic disturbances, the latter considered in terms of low wall shear stress (WSS). These stimuli trigger i) inflammatory cell activation and ii) exacerbated vascular cell activities. Moreover, an extensive analysis was performed to investigate the ABM sensitivity to the driving parameters and inputs and gain insights into the ABM working mechanisms. The ABM was able to effectively replicate a 4-week CAV initiation and progression, characterized by lumen area decrease due to progressive intimal thickening in regions exposed to high inflammation and low WSS. Moreover, the parameter and input sensitivity analysis highlighted that the inflammatory-related events rather than the WSS predominantly drive CAV, corroborating the inflammatory nature of the vasculopathy. The proof-of-concept model proposed herein demonstrated its potential in deepening the pathology knowledge and supporting the in vivo analysis of CAV.
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Affiliation(s)
- Elisa Serafini
- PolitoMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
- LaSIE, UMR 7356 CNRS, La Rochelle Université, La Rochelle, France
- Center for Precision Surgery, Houston Methodist Research Institute, Houston, TX, United States
| | - Anna Corti
- Laboratory of Biological Structure Mechanics (LaBS), Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Milan, Italy
| | - Diego Gallo
- PolitoMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Claudio Chiastra
- PolitoMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Xian C. Li
- Immunobiology and Transplant Science Center, Houston Methodist Hospital, Houston, TX, United States
- Department of Surgery, Weill Cornell Medical College of Cornell University, New York, NY, United States
- Department of Surgery, Houston Methodist Hospital, Houston, TX, United States
| | - Stefano Casarin
- LaSIE, UMR 7356 CNRS, La Rochelle Université, La Rochelle, France
- Center for Precision Surgery, Houston Methodist Research Institute, Houston, TX, United States
- Department of Surgery, Houston Methodist Hospital, Houston, TX, United States
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4
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Pal D, Ghatak S, Singh K, Abouhashem AS, Kumar M, El Masry MS, Mohanty SK, Palakurti R, Rustagi Y, Tabasum S, Khona DK, Khanna S, Kacar S, Srivastava R, Bhasme P, Verma SS, Hernandez E, Sharma A, Reese D, Verma P, Ghosh N, Gorain M, Wan J, Liu S, Liu Y, Castro NH, Gnyawali SC, Lawrence W, Moore J, Perez DG, Roy S, Yoder MC, Sen CK. Identification of a physiologic vasculogenic fibroblast state to achieve tissue repair. Nat Commun 2023; 14:1129. [PMID: 36854749 PMCID: PMC9975176 DOI: 10.1038/s41467-023-36665-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 02/13/2023] [Indexed: 03/02/2023] Open
Abstract
Tissue injury to skin diminishes miR-200b in dermal fibroblasts. Fibroblasts are widely reported to directly reprogram into endothelial-like cells and we hypothesized that miR-200b inhibition may cause such changes. We transfected human dermal fibroblasts with anti-miR-200b oligonucleotide, then using single cell RNA sequencing, identified emergence of a vasculogenic subset with a distinct fibroblast transcriptome and demonstrated blood vessel forming function in vivo. Anti-miR-200b delivery to murine injury sites likewise enhanced tissue perfusion, wound closure, and vasculogenic fibroblast contribution to perfused vessels in a FLI1 dependent manner. Vasculogenic fibroblast subset emergence was blunted in delayed healing wounds of diabetic animals but, topical tissue nanotransfection of a single anti-miR-200b oligonucleotide was sufficient to restore FLI1 expression, vasculogenic fibroblast emergence, tissue perfusion, and wound healing. Augmenting a physiologic tissue injury adaptive response mechanism that produces a vasculogenic fibroblast state change opens new avenues for therapeutic tissue vascularization of ischemic wounds.
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Affiliation(s)
- Durba Pal
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
- Department of Biomedical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab, 140001, India
| | - Subhadip Ghatak
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Kanhaiya Singh
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Ahmed Safwat Abouhashem
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Manishekhar Kumar
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Mohamed S El Masry
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Sujit K Mohanty
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Ravichand Palakurti
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Yashika Rustagi
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Saba Tabasum
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Dolly K Khona
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Savita Khanna
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Sedat Kacar
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Rajneesh Srivastava
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Pramod Bhasme
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Sumit S Verma
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Edward Hernandez
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Anu Sharma
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Diamond Reese
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Priyanka Verma
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Nandini Ghosh
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Mahadeo Gorain
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Jun Wan
- Center for Computational Biology and Bioinformatics (CCBB), Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Sheng Liu
- Center for Computational Biology and Bioinformatics (CCBB), Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Yunlong Liu
- Center for Computational Biology and Bioinformatics (CCBB), Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Natalia Higuita Castro
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Surya C Gnyawali
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - William Lawrence
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Jordan Moore
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Daniel Gallego Perez
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, 43210, USA
| | - Sashwati Roy
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA
| | - Mervin C Yoder
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Chandan K Sen
- Indiana Center for Regenerative Medicine & Engineering, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
- Department of Surgery, The Ohio State University, Columbus, OH, 43210, USA.
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, 43210, USA.
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Billig S, Hein M, Mechelinck M, Schumacher D, Roehl AB, Fuchs D, Kramann R, Uhlig M. Comparative assessment of coronary physiology using transthoracic pulsed-wave Doppler and myocardial contrast echocardiography in rats. Eur Radiol Exp 2023; 7:6. [PMID: 36757486 PMCID: PMC9911582 DOI: 10.1186/s41747-022-00319-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/28/2022] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Coronary physiology assessment in rodents by ultrasound is an excellent noninvasive and easy to perform technique, including pulsed-wave Doppler (PWD) and myocardial contrast echocardiography (MCE). Both techniques and the corresponding calculated parameters were investigated in this study at rest as well as their response to pharmacologically induced stress. METHODS Left ventricular myocardial function was assessed in eight anaesthetised rats using transthoracic echocardiography. Coronary physiology was assessed by both PWD of the left coronary artery and MCE using a bolus method. Measurements were performed at rest and under stimulation with adenosine and dobutamine. Effects of stimulation on the calculated parameters were evaluated and rated by effect size (η2). RESULTS Changes could be demonstrated by selected parameters of PWD and MCE. The clearest effect in PWD was found for diastolic peak velocity (η2 = 0.58). It increased from 528 ± 110 mm/s (mean ± standard deviation) at rest to 839 ± 342 mm/s (p = 0.001) with adenosine and 1093 ± 302 mm/s with dobutamine (p = 0.001). The most distinct effect from MCE was found for the normalised wash-in rate (η2 = 0.58). It increased from 1.95 ± 0.35% at rest to 3.87 ± 0.85% with adenosine (p = 0.001) and 3.72 ± 1.03% with dobutamine (p = 0.001). CONCLUSION Induced changes in coronary physiology by adenosine and dobutamine could successfully be monitored using MCE and PWD in anaesthetised rats. Due to the low invasiveness of the measurements, this protocol could be used for longitudinal animal studies.
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Affiliation(s)
- Sebastian Billig
- Department of Anesthesiology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Marc Hein
- grid.1957.a0000 0001 0728 696XDepartment of Anesthesiology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Mare Mechelinck
- grid.1957.a0000 0001 0728 696XDepartment of Anesthesiology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - David Schumacher
- grid.1957.a0000 0001 0728 696XDepartment of Anesthesiology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany ,grid.1957.a0000 0001 0728 696XInstitute of Experimental Medicine and Systems Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Anna B. Roehl
- grid.1957.a0000 0001 0728 696XDepartment of Anesthesiology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Dieter Fuchs
- grid.509684.60000 0001 2309 6090FUJIFILM VisualSonics, Inc., Joop Geesinkweg 140, 1114 AB Amsterdam, The Netherlands
| | - Rafael Kramann
- grid.1957.a0000 0001 0728 696XInstitute of Experimental Medicine and Systems Biology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany ,grid.1957.a0000 0001 0728 696XDivision of Nephrology and Clinical Immunology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany ,Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical, Doctor Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Moritz Uhlig
- grid.1957.a0000 0001 0728 696XDepartment of Anesthesiology, Faculty of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
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6
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Jasiewicz NE, Mei KC, Oh HM, Chansoria P, Hendy DA, Bonacquisti EE, Bachelder EM, Ainslie KM, Yin H, Qian L, Jensen BC, Nguyen J. ZipperCells Exhibit Enhanced Accumulation and Retention at the Site of Myocardial Infarction. Adv Healthc Mater 2023; 12:e2201094. [PMID: 36349814 PMCID: PMC10353854 DOI: 10.1002/adhm.202201094] [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: 05/09/2022] [Revised: 10/31/2022] [Indexed: 11/10/2022]
Abstract
There has been extensive interest in cellular therapies for the treatment of myocardial infarction, but bottlenecks concerning cellular accumulation and retention remain. Here, a novel system of in situ crosslinking mesenchymal stem cells (MSCs) for the formation of a living depot at the infarct site is reported. Bone marrow-derived mesenchymal stem cells that are surface decorated with heterodimerizing leucine zippers, termed ZipperCells, are engineered. When delivered intravenously in sequential doses, it is demonstrated that ZipperCells can migrate to the infarct site, crosslink, and show ≈500% enhanced accumulation and ≈600% improvement in prolonged retention at 10 days after injection compared to unmodified MSCs. This study introduces an advanced approach to creating noninvasive therapeutics depots using cellular crosslinking and provides the framework for future scaffold-free delivery methods for cardiac repair.
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Affiliation(s)
- Natalie E. Jasiewicz
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kuo-Ching Mei
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Hannah M. Oh
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Parth Chansoria
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Dylan A. Hendy
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Emily, E. Bonacquisti
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Eric M. Bachelder
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kristy M. Ainslie
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
| | - Haifeng Yin
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Li Qian
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Brian C. Jensen
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC 27599, USA; Department of Medicine, Division of Cardiology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Juliane Nguyen
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy. University of North Carolina, Chapel Hill, NC 27599, USA
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7
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Chang C, Hu L, Sun S, Song Y, Liu S, Wang J, Li P. Regulatory role of the TLR4/JNK signaling pathway in sepsis‑induced myocardial dysfunction. Mol Med Rep 2021; 23:334. [PMID: 33760172 PMCID: PMC7974310 DOI: 10.3892/mmr.2021.11973] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/30/2020] [Indexed: 12/29/2022] Open
Abstract
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection, and is a leading cause of mortality worldwide. Myocardial dysfunction is associated with poor prognosis in patients with sepsis and contributes to a high risk of mortality. However, the pathophysiological mechanisms underlying sepsis-induced myocardial dysfunction are not completely understood. The aim of the present study was to investigate the role of toll-like receptor 4 (TLR4)/c-Jun N-terminal kinase (JNK) signaling in pro-inflammatory cytokine expression and cardiac dysfunction during lipopolysaccharide (LPS)-induced sepsis in mice. C57BL/6 mice were pretreated with TAK-242 or saline for 1 h and then subjected to LPS (12 mg/kg, intraperitoneal) treatment. Cardiac function was assessed using an echocardiogram. The morphological changes of the myocardium were examined by hematoxylin and eosin staining and transmission electron microscopy. The serum protein levels of cardiac troponin I (cTnI) and tumor necrosis factor-α (TNF-α) were determined by an enzyme-linked immunosorbent assay (ELISA). The TLR4 and JNK mRNA levels were analyzed via reverse transcription-quantitative PCR. TLR4, JNK and phosphorylated-JNK protein levels were measured by western blotting. In response to LPS, the activation of TLR4 and JNK in the myocardium was upregulated. There were significant increases in the serum levels of TNF-α and cTnI, as well as histopathological changes in the myocardium and suppressed cardiac function, following LPS stimulation. Inhibition of TLR4 activation using TAK-242 led to a decrease in the activation of JNK and reduced the protein expression of TNF-α in plasma, and alleviated histological myocardial injury and improved cardiac function during sepsis in mice. The present data suggested that the TLR4/JNK signaling pathway played a critical role in regulating the production of pro-inflammatory cytokines and myocardial dysfunction induced by LPS.
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Affiliation(s)
- Chao Chang
- Department of Cardiovascular Surgical ICU, Tianjin Chest Hospital, Nankai University, Tianjin 300222, P.R. China
| | - Liya Hu
- Department of Critical Care Medicine, The Third Central Hospital of Tianjin, Tianjin 300170, P.R. China
| | - Shanshan Sun
- Department of Emergency, Cangzhou Central Hospital, Cangzhou, Hebei 061001, P.R. China
| | - Yanqiu Song
- Tianjin Cardiovascular Institute, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Shan Liu
- Tianjin Cardiovascular Institute, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Jing Wang
- Department of Pathology, Tianjin Chest Hospital, Nankai University, Tianjin 300222, P.R. China
| | - Peijun Li
- Department of Cardiovascular Surgical ICU, Tianjin Chest Hospital, Nankai University, Tianjin 300222, P.R. China
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8
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Zhang Y, Wernly B, Cao X, Mustafa SJ, Tang Y, Zhou Z. Adenosine and adenosine receptor-mediated action in coronary microcirculation. Basic Res Cardiol 2021; 116:22. [PMID: 33755785 PMCID: PMC7987637 DOI: 10.1007/s00395-021-00859-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 03/08/2021] [Indexed: 12/20/2022]
Abstract
Adenosine is an ubiquitous extracellular signaling molecule and plays a fundamental role in the regulation of coronary microcirculation through activation of adenosine receptors (ARs). Adenosine is regulated by various enzymes and nucleoside transporters for its balance between intra- and extracellular compartments. Adenosine-mediated coronary microvascular tone and reactive hyperemia are through receptors mainly involving A2AR activation on both endothelial and smooth muscle cells, but also involving interaction among other ARs. Activation of ARs further stimulates downstream targets of H2O2, KATP, KV and KCa2+ channels leading to coronary vasodilation. An altered adenosine-ARs signaling in coronary microcirculation has been observed in several cardiovascular diseases including hypertension, diabetes, atherosclerosis and ischemic heart disease. Adenosine as a metabolite and its receptors have been studied for its both therapeutic and diagnostic abilities. The present review summarizes important aspects of adenosine metabolism and AR-mediated actions in the coronary microcirculation.
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Affiliation(s)
- Ying Zhang
- The International Collaborative Centre On Big Science Plan for Purinergic Signalling, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Bernhard Wernly
- Department of Anaesthesiology, Perioperative Medicine and Intensive Care Medicine, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Xin Cao
- The International Collaborative Centre On Big Science Plan for Purinergic Signalling, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - S Jamal Mustafa
- Department of Physiology and Pharmacology, West Virginia University, Morgantown, USA
| | - Yong Tang
- The International Collaborative Centre On Big Science Plan for Purinergic Signalling, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,Acupuncture and Chronobiology Key Laboratory of Sichuan Province, Chengdu, China
| | - Zhichao Zhou
- Division of Cardiology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, 17176, Stockholm, Sweden.
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9
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Wei R, Gust SL, Tandio D, Maheux A, Nguyen KH, Wang J, Bourque S, Plane F, Hammond JR. Deletion of murine slc29a4 modifies vascular responses to adenosine and 5-hydroxytryptamine in a sexually dimorphic manner. Physiol Rep 2021; 8:e14395. [PMID: 32170814 PMCID: PMC7070170 DOI: 10.14814/phy2.14395] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 12/15/2022] Open
Abstract
Equilibrative nucleoside transporter 4 (ENT4), encoded by SLC29A4, mediates the flux of both 5‐hydroxytryptamine (5‐HT) and adenosine across cell membranes. We hypothesized that loss of ENT4 function in mice would modify the effects of these established regulators of vascular function. Male and female wild‐type (WT) and slc29a4‐null (ENT4‐KO) mice were compared with respect to their hemodynamics and mesenteric vascular function. Male ENT4‐KO mice had a complete loss of myogenic tone in their mesenteric resistance arteries. This was accompanied by a decrease in blood flow in the superior mesenteric artery in the male ENT4‐KO mice, and a reduced responsiveness to 5‐HT. In contrast, endothelium‐dependent relaxations of mesenteric arteries from female ENT4‐KO mice were more sensitive to Ca2+‐activated K+ (KCa) channel blockade than WT mice. Female ENT4‐KO mice also demonstrated an enhanced vasodilatory response to adenosine in vivo that was not seen in males. Ketanserin (5‐HT2A inhibitor) and GR55562 (5‐HT1B/1D inhibitor) decreased 5‐HT‐induced tone, but only ketanserin inhibited the relaxant effect of 5‐HT in mesenteric arteries. 5‐HT‐evoked increases in tone were elevated in arteries from ENT4‐KO mice upon block of endothelial relaxant pathways, with arteries from female ENT4‐KO mice showing the greatest increase. Adenosine A2b receptor expression was decreased, while other adenosine transporter subtypes, as well as adenosine deaminase and adenosine kinase were increased in mesenteric arteries from male, but not female, ENT4‐KO mice. These findings indicate that deletion of slc29a4 leads to sex‐specific changes in vascular function with significant consequences for regulation of blood flow and pressure by adenosine and 5‐HT.
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Affiliation(s)
- Ran Wei
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | - Stephen L Gust
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | - David Tandio
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | - Alexia Maheux
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | - Khanh H Nguyen
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | - Joanne Wang
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA
| | - Stephane Bourque
- Department of Anaesthesia and Pain Medicine, University of Alberta, Edmonton, AB, Canada
| | - Frances Plane
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
| | - James R Hammond
- Department of Pharmacology, University of Alberta, Edmonton, AB, Canada
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10
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Villano G, Verardo A, Martini A, Brocco S, Pesce P, Novo E, Parola M, Sacerdoti D, Di Pascoli M, Fedrigo M, Castellani C, Angelini A, Pontisso P, Bolognesi M. Hyperdynamic circulatory syndrome in a mouse model transgenic for SerpinB3. Ann Hepatol 2021; 19:36-43. [PMID: 31607648 DOI: 10.1016/j.aohep.2019.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES SerpinB3 is a cysteine protease inhibitor involved in several biological activities. It is progressively expressed in chronic liver disease, but not in normal liver. The role in vascular reactivity of this serpin, belonging to the same family of Angiotensin II, is still unknown. Our aim was to evaluate the in vivo and in vitro effects of SerpinB3 on systemic and splanchnic hemodynamics. MATERIAL AND METHODS Different hemodynamic parameters were evaluated by ultrasonography in two colonies of mice (transgenic for human SerpinB3 and C57BL/6J controls) at baseline and after chronic carbon tetrachloride (CCl4) treatment. In vitro SerpinB3 effect on mesenteric microvessels of 5 Wistar-Kyoto rats was analyzed measuring its direct action on: (a) preconstricted arteries, (b) dose-response curves to phenylephrine, before and after inhibition of angiotensin II type 1 receptors with irbesartan. Hearts of SerpinB3 transgenic mice and of the corresponding controls were also analyzed by morphometric assessment. RESULTS In SerpinB3 transgenic mice, cardiac output (51.6±21.5 vs 30.1±10.8ml/min, p=0.003), hepatic artery pulsatility index (0.85±0.13 vs 0.65±0.11, p<0.001) and portal vein blood flow (5.3±3.2 vs 3.1±1.8ml/min, p=0.03) were significantly increased, compared to controls. In vitro, recombinant SerpinB3 had no direct hemodynamic effect on mesenteric arteries, but it increased their sensitivity to phenylephrine-mediated vasoconstriction (p<0.01). This effect was suppressed by inhibiting angiotensin II type-1 receptors. CONCLUSIONS In transgenic mice, SerpinB3 is associated with a hyperdynamic circulatory syndrome-like pattern, possibly mediated by angiotensin receptors.
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Affiliation(s)
- Gianmarco Villano
- Dept. of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | | | | | - Silvia Brocco
- Dept. of Medicine, University of Padova, Padova, Italy
| | - Paola Pesce
- Dept. of Medicine, University of Padova, Padova, Italy
| | - Erica Novo
- Dept. of Clinical and Biological Sciences, Unit of Experimental Medicine and Interuniversity Center for Liver Pathophysiology, University of Torino, Torino, Italy
| | - Maurizio Parola
- Dept. of Clinical and Biological Sciences, Unit of Experimental Medicine and Interuniversity Center for Liver Pathophysiology, University of Torino, Torino, Italy
| | | | | | - Marny Fedrigo
- Dept. of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Chiara Castellani
- Dept. of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Annalisa Angelini
- Dept. of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
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11
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Li S, Qian X, Gong J, Chen J, Tu W, Chen X, Chu M, Yang G, Li L, Jiang S. Exercise Training Reverses Lipotoxicity-induced Cardiomyopathy by Inhibiting HMGCS2. Med Sci Sports Exerc 2021; 53:47-57. [PMID: 32826638 DOI: 10.1249/mss.0000000000002453] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE This study aimed to determine the effect of exercise training on preventing lipotoxic cardiomyopathy and to investigate the role of the 3-hydroxy-3-methylglutaryl-CoA synthase 2 (HMGCS2) and miR-344g-5p in cardiomyocytes. METHODS Male C57BL/6 mice were fed a 60% high-fat diet (HFD) for 12 wk then began swimming exercise or remained sedentary for 8 wk. Thereafter, cardiac function was assessed by echocardiography, and heart tissue and plasma were collected for further measurements. The molecular mechanism of exercise was investigated after treating Hmgcs2 siRNA in palmitate-induced neonatal mouse cardiomyocytes. RESULTS HFD induced myocardial hypertrophy and fibrosis and reduced coronary reserve and cardiac function. HMGCS2 levels increased, but junctophilin-2 (JPH2) levels decreased in HFD mice hearts. Such effects were attenuated by swimming exercise. Mechanistically, Hmgcs2 silencing prevented apoptosis and caspase-3 cleavage and elevated the expression of JPH2 in palmitate-stimulated cardiomyocytes. In addition, exercise promoted miR-344g-5p expression in HFD hearts. The overexpression of miR-344g-5p by chemical mimic reduced HMGCS2, apoptosis, and caspase-3 cleavage and elevated JPH2 expression in palmitate-induced cardiomyocytes. CONCLUSION Our results suggest that exercise limits lipid metabolic disorder, cardiac hypertrophy, and fibrosis and aids in the prevention of lipotoxic cardiomyopathy. Exercise-mediated cardioprotection by upregulating miR-344g-5p, which targets Hmgcs2 mRNA, prohibits HMGCS2 upregulation and thus lipotoxicity.
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Affiliation(s)
| | | | | | | | | | | | - Maoping Chu
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, CHINA
| | | | - Lei Li
- Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, CHINA
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12
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An isolated retrograde-perfused newborn mouse heart preparation. MethodsX 2020; 7:101058. [PMID: 32983923 PMCID: PMC7492986 DOI: 10.1016/j.mex.2020.101058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/02/2020] [Indexed: 11/24/2022] Open
Abstract
The Langendorff-perfused model is a powerful tool to study biological responses in the isolated heart in the absence of confounders. The model has been adapted recently to enable study of the isolated mouse heart and the effects of genetic manipulation. Unfortunately, the small size and fragility of the mouse heart pose significant challenges, limiting application of the Langendorff model to the study of adult mice. Cardiac development is a complex and dynamic process that is incompletely understood. Thus, establishing an isolated-perfused heart model in the newborn mouse would be an important and necessary advance. Here we present a method to successfully cannulate and perfuse the isolated newborn murine heart. We describe the basic and fundamental physiological characteristics of the ex-vivo retrograde-perfused beating neonatal heart in wild-type C57Bl/6 male mice. Our approach will enable future study of the physiological and pharmacological responses of the isolated immature murine heart to enhance knowledge of how developmental cardiac biology impacts health and disease.The Langendorff model is a powerful tool to study the heart without confounders. An isolated-perfused newborn murine heart model has yet to be established. We demonstrate the first successful isolated neonatal murine heart preparation.
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13
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Gaudry M, Vairo D, Marlinge M, Gaubert M, Guiol C, Mottola G, Gariboldi V, Deharo P, Sadrin S, Maixent JM, Fenouillet E, Ruf J, Guieu R, Paganelli F. Adenosine and Its Receptors: An Expected Tool for the Diagnosis and Treatment of Coronary Artery and Ischemic Heart Diseases. Int J Mol Sci 2020; 21:ijms21155321. [PMID: 32727116 PMCID: PMC7432452 DOI: 10.3390/ijms21155321] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/15/2020] [Accepted: 07/21/2020] [Indexed: 12/14/2022] Open
Abstract
Adenosine is an endogenous nucleoside which strongly impacts the cardiovascular system. Adenosine is released mostly by endothelial cells and myocytes during ischemia or hypoxia and greatly regulates the cardiovascular system via four specific G-protein-coupled receptors named A1R, A2AR, A2BR, and A3R. Among them, A2 subtypes are strongly expressed in coronary tissues, and their activation increases coronary blood flow via the production of cAMP in smooth muscle cells. A2A receptor modulators are an opportunity for intense research by the pharmaceutical industry to develop new cardiovascular therapies. Most innovative therapies are mediated by the modulation of adenosine release and/or the activation of the A2A receptor subtypes. This review aims to focus on the specific exploration of the adenosine plasma level and its relationship with the A2A receptor, which seems a promising biomarker for a diagnostic and/or a therapeutic tool for the screening and management of coronary artery disease. Finally, a recent class of selective adenosine receptor ligands has emerged, and A2A receptor agonists/antagonists are useful tools to improve the management of patients suffering from coronary artery disease.
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Affiliation(s)
- Marine Gaudry
- Department of Vascular Surgery, Timone Hospital, F-13008 Marseille, France;
| | - Donato Vairo
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
| | - Marion Marlinge
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
- Laboratory of Biochemistry, Timone Hospital, F-13008 Marseille, France
| | - Melanie Gaubert
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
| | - Claire Guiol
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
| | - Giovanna Mottola
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
- Laboratory of Biochemistry, Timone Hospital, F-13008 Marseille, France
| | - Vlad Gariboldi
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
- Department of Cardiac Surgery, Timone Hospital, F-13008 Marseille, France
| | - Pierre Deharo
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
- Department of Cardiology, Timone Hospital, F-13008 Marseille, France
| | | | - Jean Michel Maixent
- Unité de Recherche Clinique Pierre Deniker (URC C.S. 10587) Centre Hospitalier Henri Laborit, 86000 Poitiers, France
- I.A.P.S. Equipe Emergeante, Université de Toulon, 83957 Toulon-La Garde, UFR S.F.A., F-86073 Poitiers, France
- Correspondence: (J.M.M.); (F.P.)
| | - Emmanuel Fenouillet
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
| | - Jean Ruf
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
| | - Regis Guieu
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
- Laboratory of Biochemistry, Timone Hospital, F-13008 Marseille, France
| | - Franck Paganelli
- C2VN, INSERM, INRA, Aix-Marseille University, F-13015 Marseille, France; (D.V.); (M.M.); (M.G.); (C.G.); (G.M.); (V.G.); (P.D.); (E.F.); (J.R.); (R.G.)
- Department of Cardiology, Nord Hospital, ARCHANTEC, F-13015 Marseille, France
- Correspondence: (J.M.M.); (F.P.)
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14
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Reil JC, Reil GH, Kovács Á, Sequeira V, Waddingham MT, Lodi M, Herwig M, Ghaderi S, Kreusser MM, Papp Z, Voigt N, Dobrev D, Meyhöfer S, Langer HF, Maier LS, Linz D, Mügge A, Hohl M, Steendijk P, Hamdani N. CaMKII activity contributes to homeometric autoregulation of the heart: A novel mechanism for the Anrep effect. J Physiol 2020; 598:3129-3153. [PMID: 32394454 DOI: 10.1113/jp279607] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 05/04/2020] [Indexed: 01/14/2023] Open
Abstract
KEY POINTS The Anrep effect represents the alteration of left ventricular (LV) contractility to acutely enhanced afterload in a few seconds, thereby preserving stroke volume (SV) at constant preload. As a result of the missing preload stretch in our model, the Anrep effect differs from the slow force response and has a different mechanism. The Anrep effect demonstrated two different phases. First, the sudden increased afterload was momentary equilibrated by the enhanced LV contractility as a result of higher power strokes of strongly-bound myosin cross-bridges. Second, the slightly delayed recovery of SV is perhaps dependent on Ca2+ /calmodulin-dependent protein kinase II activation caused by oxidation and myofilament phosphorylation (cardiac myosin-binding protein-C, myosin light chain 2), maximizing the recruitment of available strongly-bound myosin cross-bridges. Short-lived oxidative stress might present a new facet of subcellular signalling with respect to cardiovascular regulation. Relevance for human physiology was demonstrated by echocardiography disclosing the Anrep effect in humans during handgrip exercise. ABSTRACT The present study investigated whether oxidative stress and Ca2+ /calmodulin-dependent protein kinase II (CaMKII) activity are involved in triggering the Anrep effect. LV pressure-volume (PV) analyses of isolated, preload controlled working hearts were performed at two afterload levels (60 and 100 mmHg) in C57BL/6N wild-type (WT) and CaMKII-double knockout mice (DKOCaMKII ). In snap-frozen WT hearts, force-pCa relationship, H2 O2 generation, CaMKII oxidation and phosphorylation of myofilament and Ca2+ handling proteins were assessed. Acutely raised afterload showed significantly increased wall stress, H2 O2 generation and LV contractility in the PV diagram with an initial decrease and recovery of stroke volume, whereas end-diastolic pressure and volume, as well as heart rate, remained constant. Afterload induced increase in LV contractility was blunted in DKOCaMKII -hearts. Force development of single WT cardiomyocytes was greater with elevated afterload at submaximal Ca2+ concentration and associated with increases in CaMKII oxidation and phosphorylation of cardiac-myosin binding protein-C, myosin light chain and Ca2+ handling proteins. CaMKII activity is involved in the regulation of the Anrep effect and associates with stimulation of oxidative stress, presumably starting a cascade of CaMKII oxidation with downstream phosphorylation of myofilament and Ca2+ handling proteins. These mechanisms improve LV inotropy and preserve stroke volume within few seconds.
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Affiliation(s)
- Jan-Christian Reil
- Klinik für Innere Medizin II, Kardiologie, Angiologie und Internistische Intensivmedizin, Universitäres Herzzentrum Lübeck, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Gert-Hinrich Reil
- Klinik für Kardiologie, Klinikum Oldenburg, Innere Medizin I, Oldenburg, Germany
| | - Árpád Kovács
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany.,Department of Cardiology, St. Josef-Hospital, Ruhr University of Bochum, Bochum, Germany.,Molecular and Experimental Cardiology, Ruhr Universität Bochum, Bochum, Germany
| | - Vasco Sequeira
- Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, Germany
| | - Mark T Waddingham
- Department of Physiology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - Maria Lodi
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany.,Department of Cardiology, St. Josef-Hospital, Ruhr University of Bochum, Bochum, Germany.,Molecular and Experimental Cardiology, Ruhr Universität Bochum, Bochum, Germany
| | - Melissa Herwig
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany.,Department of Cardiology, St. Josef-Hospital, Ruhr University of Bochum, Bochum, Germany.,Molecular and Experimental Cardiology, Ruhr Universität Bochum, Bochum, Germany
| | - Shahrooz Ghaderi
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany
| | - Michael M Kreusser
- Departments of Cardiology, University of Heidelberg, Heidelberg, Germany
| | - Zoltán Papp
- Division of Clinical Physiology, Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Niels Voigt
- Institute of Pharmacology, West German Heart and Vascular Center, Faculty of Medicine, University Duisburg-Essen, Essen, Germany.,Institute of Pharmacology and Toxicology, University Medical Center Göttingen, Georg-August University Göttingen, Göttingen, Germany.,DZHK (German Center for Cardiovascular Research), partner site Göttingen, Göttingen, Germany
| | - Dobromir Dobrev
- Institute of Pharmacology, West German Heart and Vascular Center, Faculty of Medicine, University Duisburg-Essen, Essen, Germany
| | - Svenja Meyhöfer
- Institute for Endocrinology & Diabetes, University of Lübeck, Lübeck, Germany and German Center for Diabetes Research, Neuherberg, Germany
| | - Harald F Langer
- Klinik für Innere Medizin II, Kardiologie, Angiologie und Internistische Intensivmedizin, Universitäres Herzzentrum Lübeck, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Lars S Maier
- Klinik und Poliklinik für innere Medizin II, Universitätsklinikum Regensburg, Regensburg, Germany
| | - Dominik Linz
- Klinik für Innere Medizin III (Kardiologie, Angiologie, Internistische Intensivmedizin), Universitätsklinikum des Saarlandes, Homburg/Saar, Germany
| | - Andreas Mügge
- Department of Cardiology, St. Josef-Hospital, Ruhr University of Bochum, Bochum, Germany.,Molecular and Experimental Cardiology, Ruhr Universität Bochum, Bochum, Germany
| | - Mathias Hohl
- Klinik für Innere Medizin III (Kardiologie, Angiologie, Internistische Intensivmedizin), Universitätsklinikum des Saarlandes, Homburg/Saar, Germany
| | - Paul Steendijk
- Departments of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Nazha Hamdani
- Institute of Physiology, Ruhr University Bochum, Bochum, Germany.,Department of Cardiology, St. Josef-Hospital, Ruhr University of Bochum, Bochum, Germany.,Molecular and Experimental Cardiology, Ruhr Universität Bochum, Bochum, Germany.,Department Clinical Pharmacology, Ruhr University of Bochum, Bochum, Germany
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15
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Manoury B, Idres S, Leblais V, Fischmeister R. Ion channels as effectors of cyclic nucleotide pathways: Functional relevance for arterial tone regulation. Pharmacol Ther 2020; 209:107499. [PMID: 32068004 DOI: 10.1016/j.pharmthera.2020.107499] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Accepted: 02/05/2020] [Indexed: 02/07/2023]
Abstract
Numerous mediators and drugs regulate blood flow or arterial pressure by acting on vascular tone, involving cyclic nucleotide intracellular pathways. These signals lead to regulation of several cellular effectors, including ion channels that tune cell membrane potential, Ca2+ influx and vascular tone. The characterization of these vasocontrictive or vasodilating mechanisms has grown in complexity due to i) the variety of ion channels that are expressed in both vascular endothelial and smooth muscle cells, ii) the heterogeneity of responses among the various vascular beds, and iii) the number of molecular mechanisms involved in cyclic nucleotide signalling in health and disease. This review synthesizes key data from literature that highlight ion channels as physiologically relevant effectors of cyclic nucleotide pathways in the vasculature, including the characterization of the molecular mechanisms involved. In smooth muscle cells, cation influx or chloride efflux through ion channels are associated with vasoconstriction, whereas K+ efflux repolarizes the cell membrane potential and mediates vasodilatation. Both categories of ion currents are under the influence of cAMP and cGMP pathways. Evidence that some ion channels are influenced by CN signalling in endothelial cells will also be presented. Emphasis will also be put on recent data touching a variety of determinants such as phosphodiesterases, EPAC and kinase anchoring, that complicate or even challenge former paradigms.
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Affiliation(s)
- Boris Manoury
- Inserm, Umr-S 1180, Université Paris-Saclay, Châtenay-Malabry, France.
| | - Sarah Idres
- Inserm, Umr-S 1180, Université Paris-Saclay, Châtenay-Malabry, France
| | - Véronique Leblais
- Inserm, Umr-S 1180, Université Paris-Saclay, Châtenay-Malabry, France
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Yao Y, Li H, Da X, He Z, Tang B, Li Y, Hu C, Xu C, Chen Q, Wang QK. SUMOylation of Vps34 by SUMO1 promotes phenotypic switching of vascular smooth muscle cells by activating autophagy in pulmonary arterial hypertension. Pulm Pharmacol Ther 2019; 55:38-49. [PMID: 30703554 PMCID: PMC6814199 DOI: 10.1016/j.pupt.2019.01.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 01/21/2019] [Accepted: 01/25/2019] [Indexed: 01/07/2023]
Abstract
INTRODUCTION Pulmonary arterial hypertension (PAH) is a life-threatening disease without effective therapies. PAH is associated with a progressive increase in pulmonary vascular resistance and irreversible pulmonary vascular remodeling. SUMO1 (small ubiquitin-related modifier 1) can bind to target proteins and lead to protein SUMOylation, an important post-translational modification with a key role in many diseases. However, the contribution of SUMO1 to PAH remains to be fully characterized. METHODS In this study, we explored the role of SUMO1 in the dedifferentiation of vascular smooth muscle cells (VSMCs) involved in hypoxia-induced pulmonary vascular remodeling and PAH in vivo and in vitro. RESULTS In a mouse model of hypoxic PAH, SUMO1 expression was significantly increased, which was associated with activation of autophagy (increased LC3b and decreased p62), dedifferentiation of pulmonary arterial VSMCs (reduced α-SMA, SM22 and SM-MHC), and pulmonary vascular remodeling. Similar results were obtained in a MCT-induced PAH model. Overexpression of SUMO1 significantly increased VSMCs proliferation, migration, hypoxia-induced VSMCs dedifferentiation, and autophagy, but these effects were abolished by inhibition of autophagy by 3-MA in aortic VSMCs. Furthermore, SUMO1 knockdown reversed hypoxia-induced proliferation and migration of PASMCs. Mechanistically, SUMO1 promotes Vps34 SUMOylation and the assembly of the Beclin-1-Vps34-Atg14 complex, thereby inducing autophagy, whereas Vps34 mutation K840R reduces Vps34 SUMOylation and inhibits VSMCs dedifferentiation. DISCUSSION Our data uncovers an important role of SUMO1 in VSMCs proliferation, migration, autophagy, and phenotypic switching (dedifferentiation) involved in pulmonary vascular remodeling and PAH. Targeting of the SUMO1-Vps34-autophagy signaling axis may be exploited to develop therapeutic strategies to treat PAH.
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Affiliation(s)
- Yufeng Yao
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Hui Li
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Xinwen Da
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Zuhan He
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Bo Tang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yong Li
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Changqing Hu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Chengqi Xu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China
| | - Qiuyun Chen
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, 44195, USA; Department of Molecular Medicine, CCLCM of Case Western Reserve University, Cleveland, OH, 44195, USA.
| | - Qing K Wang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, PR China; Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, 44195, USA; Department of Molecular Medicine, CCLCM of Case Western Reserve University, Cleveland, OH, 44195, USA; Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA.
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17
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Sunyecz IL, McCallinhart PE, Patel KU, McDermott MR, Trask AJ. Defining Coronary Flow Patterns: Comprehensive Automation of Transthoracic Doppler Coronary Blood Flow. Sci Rep 2018; 8:17268. [PMID: 30467422 PMCID: PMC6250694 DOI: 10.1038/s41598-018-35572-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 11/05/2018] [Indexed: 11/09/2022] Open
Abstract
The coronary microcirculation (CM) plays a critical role in the regulation of blood flow and nutrient exchange to support the viability of the heart. In many disease states, the CM becomes structurally and functionally impaired, and transthoracic Doppler echocardiography can be used as a non-invasive surrogate to assess CM disease. Analysis of Doppler echocardiography is prone to user bias and can be laborious, especially if additional parameters are collected. We hypothesized that we could develop a MATLAB algorithm to automatically analyze clinically-relevant and non-traditional parameters from murine PW Doppler coronary flow patterns that would reduce intra- and inter-operator bias, and analysis time. Our results show a significant reduction in intra- and inter-observer variability as well as a 30 fold decrease in analysis time with the automated program vs. manual analysis. Finally, we demonstrated good agreement between automated and manual analysis for clinically-relevant parameters under baseline and hyperemic conditions. Resulting coronary flow velocity reserve calculations were also found to be in good agreement. We present a MATLAB algorithm that is user friendly and robust in defining and measuring Doppler coronary flow pattern parameters for more efficient and potentially more insightful analysis assessed via Doppler echocardiography.
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Affiliation(s)
- Ian L Sunyecz
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Patricia E McCallinhart
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Kishan U Patel
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Michael R McDermott
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Aaron J Trask
- Center for Cardiovascular Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
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18
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Feng Y, Wang X, Fan T, Li L, Sun X, Zhang W, Cao M, Liu J, Li J, Huo Y. Bifurcation Asymmetry of Small Coronary Arteries in Juvenile and Adult Mice. Front Physiol 2018; 9:519. [PMID: 29867562 PMCID: PMC5962776 DOI: 10.3389/fphys.2018.00519] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 04/23/2018] [Indexed: 11/13/2022] Open
Abstract
Background: Microvascular bifurcation asymmetry is of significance for regulation of coronary flow heterogeneity during juvenile and adult growth. The aim of the study is to investigate the morphometric and hemodynamic variation of coronary arterial bifurcations in mice of different ages. Methods: Pulsatile blood flows were computed from a Womersley-type model in the reconstructed left coronary arterial (LCA) trees from Micro-CT images in normal mice at ages of 3 weeks, 6 weeks, 12 weeks, 5-6 months, and >8 months. Diameter and flow ratios and bifurcation angles were determined in each bifurcation of the LCA trees. Results: The blood volume and inlet flow rate of LCA trees increase and decrease during juvenile and adult growth, respectively. As vessel diameters decrease, the increased ratios of small to large daughter vessel diameters (Ds/Dl) result in more uniform flows and lower velocities. There are significant structure-functional changes of LCA trees in mice of >8 months compared with mice of < 8 months. As Ds/Dl increases, the variation trend of bifurcation angle during juvenile growth is different from that during adult growth. Conclusions: Although inlet flows are different in adult vs. juvenile mice, the adult still have uniform flow and low velocity. This is accomplished through a decrease in diameter. The design ensures ordered dispersion of red cells through asymmetric branching patterns into the capillaries.
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Affiliation(s)
- Yundi Feng
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Xuan Wang
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Tingting Fan
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Li Li
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Xiaotong Sun
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Wenxi Zhang
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Minglu Cao
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| | - Jian Liu
- Department of Cardiology, Peking University People's Hospital, Beijing, China
| | - Jianping Li
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Yunlong Huo
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
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Teng B, Labazi H, Sun C, Yang Y, Zeng X, Mustafa SJ, Zhou Z. Divergent coronary flow responses to uridine adenosine tetraphosphate in atherosclerotic ApoE knockout mice. Purinergic Signal 2017; 13:591-600. [PMID: 28929376 PMCID: PMC5714849 DOI: 10.1007/s11302-017-9586-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 08/31/2017] [Indexed: 01/11/2023] Open
Abstract
Uridine adenosine tetraphosphate (Up4A) exerts potent relaxation in porcine coronary arteries that is reduced following myocardial infarction, suggesting a crucial role for Up4A in the regulation of coronary flow (CF) in cardiovascular disorders. We evaluated the vasoactive effects of Up4A on CF in atherosclerosis using ApoE knockout (KO) mice ex vivo and in vivo. Functional studies were conducted in isolated mouse hearts using the Langendorff technique. Immunofluorescence was performed to assess purinergic P2X1 receptor (P2X1R) expression in isolated mouse coronary arteries. In vivo effects of Up4A on coronary blood flow (CBF) were assessed using ultrasound. Infusion of Up4A (10-9-10-5 M) into isolated mouse hearts resulted in a concentration-dependent reduction in CF in WT and ApoE KO mice to a similar extent; this effect was exacerbated in ApoE KO mice fed a high-fat diet (HFD). The P2X1R antagonist MRS2159 restored Up4A-mediated decreases in CF more so in ApoE KO + HFD than ApoE KO mice. The smooth muscle to endothelial cell ratio of coronary P2X1R expression was greater in ApoE KO + HFD than ApoE KO or WT mice, suggesting a net vasoconstrictor potential of P2X1R in ApoE KO + HFD mice. In contrast, Up4A (1.6 mg/kg) increased CBF to a similar extent among the three groups. In conclusion, Up4A decreases CF more in ApoE KO + HFD mice, likely through a net upregulation of vasoconstrictor P2X1R. In contrast, Up4A increases CBF in vivo regardless of the atherosclerotic model.
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Affiliation(s)
- Bunyen Teng
- Department of Physiology and Pharmacology, Clinical and Translational Science Institute, West Virginia University, Morgantown, WV, USA
- Coagulation and Blood Research Task Area, US Army Institute of Surgical Research, San Antonio, TX, USA
| | - Hicham Labazi
- Department of Physiology and Pharmacology, Clinical and Translational Science Institute, West Virginia University, Morgantown, WV, USA
- Center for Cardiovascular Research and The Heart Center, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Changyan Sun
- Department of Physiology and Pharmacology, Clinical and Translational Science Institute, West Virginia University, Morgantown, WV, USA
- Molecular Vascular Medicine, Department of Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Yan Yang
- Key Laboratory of Medical Electrophysiology of Ministry of Education, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - Xiaorong Zeng
- Key Laboratory of Medical Electrophysiology of Ministry of Education, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - S Jamal Mustafa
- Department of Physiology and Pharmacology, Clinical and Translational Science Institute, West Virginia University, Morgantown, WV, USA
| | - Zhichao Zhou
- Department of Physiology and Pharmacology, Clinical and Translational Science Institute, West Virginia University, Morgantown, WV, USA.
- Division of Cardiology, Department of Medicine, Karolinska University Hospital, Karolinska Institutet, 17176, Stockholm, Sweden.
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Ng WY, Migotto A, Ferreira TS, Lopes LB. Monoolein-alginate beads as a platform to promote adenosine cutaneous localization and wound healing. Int J Biol Macromol 2017; 102:1104-1111. [DOI: 10.1016/j.ijbiomac.2017.04.094] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 03/28/2017] [Accepted: 04/03/2017] [Indexed: 01/16/2023]
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21
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Teng B, Tilley SL, Ledent C, Mustafa SJ. In vivo assessment of coronary flow and cardiac function after bolus adenosine injection in adenosine receptor knockout mice. Physiol Rep 2016; 4:4/11/e12818. [PMID: 27302991 PMCID: PMC4908494 DOI: 10.14814/phy2.12818] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 04/30/2016] [Indexed: 12/20/2022] Open
Abstract
Bolus injections of adenosine and the A2A adenosine receptor (AR) selective agonist (regadenoson) are used clinically as a substitute for a stress test in people who cannot exercise. Using isolated tissue preparations, our lab has shown that coronary flow and cardiac effects of adenosine are mostly regulated by the AR subtypes A1, A2A, and A2B In this study, we used ultrasound imaging to measure the in vivo effects of adenosine on coronary blood flow (left coronary artery) and cardiac function in anesthetized wild-type, A1 knockout (KO), A2AKO, A2BKO, A3KO, A1, and A3 double KO (A1/3 DKO) and A2A and A2B double KO (A2A/2B DKO) mice in real time. Echocardiographic and Doppler studies were performed using a Visualsonic Vevo 2100 ultrasound system. Coronary blood flow (CBF) baseline data were obtained when animals were anesthetized with 1% isoflourane. Diameter (D) and velocity time integral (VTI) were measured on the left coronary arteries (CBF = ((π/4) × D(2) × VTI × HR)/1000). CBF changes were the highest within 2 min of injection (about 10 mg/kg). Heart rate, cardiac output, and stroke volume were measured by tracing the left ventricle long axis. Our data support a role for the A2 AR in CBF and further support our conclusions of previous studies from isolated tissues. Adenosine-mediated decreases in cardiac output and stroke volume may be A2B and/or A3 AR-mediated; however, the A1 and A2 ARs also play roles in overall cardiac function. These data further provide a powerful translational tool in studying the cardiovascular effects of adenosine in disease states.
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Affiliation(s)
- Bunyen Teng
- Department of Physiology & Pharmacology, West Virginia University, Morgantown, West Virginia
| | - Stephen L Tilley
- Department of Medicine, University of North Carolina, Chapel Hill, North Carolina
| | | | - S Jamal Mustafa
- Department of Physiology & Pharmacology, West Virginia University, Morgantown, West Virginia
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