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Kollmann A, Lohr D, Ankenbrand MJ, Bille M, Terekhov M, Hock M, Elabyad I, Baltes S, Reiter T, Schnitter F, Bauer WR, Hofmann U, Schreiber LM. Cardiac function in a large animal model of myocardial infarction at 7 T: deep learning based automatic segmentation increases reproducibility. Sci Rep 2024; 14:11009. [PMID: 38744988 PMCID: PMC11094053 DOI: 10.1038/s41598-024-61417-4] [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: 04/13/2023] [Accepted: 05/06/2024] [Indexed: 05/16/2024] Open
Abstract
Cardiac magnetic resonance (CMR) imaging allows precise non-invasive quantification of cardiac function. It requires reliable image segmentation for myocardial tissue. Clinically used software usually offers automatic approaches for this step. These are, however, designed for segmentation of human images obtained at clinical field strengths. They reach their limits when applied to preclinical data and ultrahigh field strength (such as CMR of pigs at 7 T). In our study, eleven animals (seven with myocardial infarction) underwent four CMR scans each. Short-axis cine stacks were acquired and used for functional cardiac analysis. End-systolic and end-diastolic images were labelled manually by two observers and inter- and intra-observer variability were assessed. Aiming to make the functional analysis faster and more reproducible, an established deep learning (DL) model for myocardial segmentation in humans was re-trained using our preclinical 7 T data (n = 772 images and labels). We then tested the model on n = 288 images. Excellent agreement in parameters of cardiac function was found between manual and DL segmentation: For ejection fraction (EF) we achieved a Pearson's r of 0.95, an Intraclass correlation coefficient (ICC) of 0.97, and a Coefficient of variability (CoV) of 6.6%. Dice scores were 0.88 for the left ventricle and 0.84 for the myocardium.
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Affiliation(s)
- Alena Kollmann
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - David Lohr
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany.
| | - Markus J Ankenbrand
- Faculty of Biology, Center for Computational and Theoretical Biology (CCTB), University of Würzburg, Würzburg, Germany
| | - Maya Bille
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - Maxim Terekhov
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - Michael Hock
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - Ibrahim Elabyad
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - Steffen Baltes
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
| | - Theresa Reiter
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Florian Schnitter
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Wolfgang R Bauer
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Ulrich Hofmann
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
| | - Laura M Schreiber
- Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany
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Kvitka D, Pauza DH. Pathways and morphologic pattern of blood supply of epicardial ganglionated nerve plexus. Ann Anat 2024; 252:152201. [PMID: 38128744 DOI: 10.1016/j.aanat.2023.152201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/29/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Detailed cardiac neuroanatomy is critical for understanding cardiac function and its pathology. However, there remains a significant gap in knowledge regarding the blood supply to the intrinsic cardiac ganglionated plexus (GP). This study addresses this by mapping the routes and morphological pattern of blood supply to the epicardial GP in a large-animal pig model (Sus scrofa domesticus). Twenty-five domestic pigs were used in the study. We demonstrate that the epicardial ganglionated nerves receive blood from both coronary and extra-cardiac arteries. The coronary arterial branches supply blood to all five subplexuses constituting the epicardial GP. In contrast, the branches of extra-cardiac arteries supply blood to target heart areas: 1) the venous part of the heart hilum on the left atrium, 2) the walls of the sinuses of the right cranial (superior cava) and 3) pulmonary veins. Uniformly, epicardial nerves and ganglia are supplied with blood via a sole epineurial arteriole which, in most cases, is the fifth/sixth-order branch of the coronary arteries. The extra-cardiac arteries supplying blood to the epicardial GP accompanied the mediastinal nerves entering the epicardium within the limits of the heart hilum. Together, the dual and triple blood supply of the epicardial nerves and ganglia suggests a protective role from an ischemic event and/or ischemic heart disease. STUCTURED ABSTRACT: This study details the anatomy of the blood supply of epicardial ganglionated nerve plexus, from which nerve fibres extend to the myocardium, heart conduction system, coronary vessels, and endocardium, in the most popular animal model of experimental cardiology and cardiac surgery - the domestic pig. Our observations demonstrate that the epicardial nerves and ganglia receive blood from both coronary and extra-cardiac arteries. The multi-source blood supply to the cardiac nerves and ganglia may offer protection against myocardial infarction ant other ischemic heart disorders.
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Affiliation(s)
- Dmitrij Kvitka
- Institute of Anatomy, Faculty of Medicine, Lithuanian University of Health Sciences, A. Mickeviciaus Street 9, Kaunas LT 44307, Lithuania.
| | - Dainius H Pauza
- Institute of Anatomy, Faculty of Medicine, Lithuanian University of Health Sciences, A. Mickeviciaus Street 9, Kaunas LT 44307, Lithuania.
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Tscheuschner L, Tzafriri AR. Cardiovascular Tissue Engineering Models for Atherosclerosis Treatment Development. Bioengineering (Basel) 2023; 10:1373. [PMID: 38135964 PMCID: PMC10740643 DOI: 10.3390/bioengineering10121373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
In the early years of tissue engineering, scientists focused on the generation of healthy-like tissues and organs to replace diseased tissue areas with the aim of filling the gap between organ demands and actual organ donations. Over time, the realization has set in that there is an additional large unmet need for suitable disease models to study their progression and to test and refine different treatment approaches. Increasingly, researchers have turned to tissue engineering to address this need for controllable translational disease models. We review existing and potential uses of tissue-engineered disease models in cardiovascular research and suggest guidelines for generating adequate disease models, aimed both at studying disease progression mechanisms and supporting the development of dedicated drug-delivery therapies. This involves the discussion of different requirements for disease models to test drugs, nanoparticles, and drug-eluting devices. In addition to realistic cellular composition, the different mechanical and structural properties that are needed to simulate pathological reality are addressed.
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Affiliation(s)
- Linnea Tscheuschner
- Department of Vascular Surgery, National and Kapodistrian University of Athens, 15772 Athens, Greece
| | - Abraham R. Tzafriri
- Department of Research and Innovation, CBSET Inc., Lexington, MA 02421, USA;
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Sukhanov S, Higashi Y, Yoshida T, Danchuk S, Alfortish M, Goodchild T, Scarborough A, Sharp T, Jenkins JS, Garcia D, Ivey J, Tharp DL, Schumacher J, Rozenbaum Z, Kolls JK, Bowles D, Lefer D, Delafontaine P. Insulin-like growth factor 1 reduces coronary atherosclerosis in pigs with familial hypercholesterolemia. JCI Insight 2023; 8:e165713. [PMID: 36602878 PMCID: PMC9990768 DOI: 10.1172/jci.insight.165713] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
Although murine models of coronary atherosclerotic disease have been used extensively to determine mechanisms, limited new therapeutic options have emerged. Pigs with familial hypercholesterolemia (FH pigs) develop complex coronary atheromas that are almost identical to human lesions. We reported previously that insulin-like growth factor 1 (IGF-1) reduced aortic atherosclerosis and promoted features of stable plaque in a murine model. We administered human recombinant IGF-1 or saline (control) in atherosclerotic FH pigs for 6 months. IGF-1 decreased relative coronary atheroma in vivo (intravascular ultrasound) and reduced lesion cross-sectional area (postmortem histology). IGF-1 increased plaque's fibrous cap thickness, and reduced necrotic core, macrophage content, and cell apoptosis, consistent with promotion of a stable plaque phenotype. IGF-1 reduced circulating triglycerides, markers of systemic oxidative stress, and CXCL12 chemokine levels. We used spatial transcriptomics (ST) to identify global transcriptome changes in advanced plaque compartments and to obtain mechanistic insights into IGF-1 effects. ST analysis showed that IGF-1 suppressed FOS/FOSB factors and gene expression of MMP9 and CXCL14 in plaque macrophages, suggesting possible involvement of these molecules in IGF-1's effect on atherosclerosis. Thus, IGF-1 reduced coronary plaque burden and promoted features of stable plaque in a pig model, providing support for consideration of clinical trials.
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Affiliation(s)
- Sergiy Sukhanov
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Yusuke Higashi
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Tadashi Yoshida
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Svitlana Danchuk
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Mitzi Alfortish
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Traci Goodchild
- Cardiovascular Center of Excellence, School of Medicine, Louisiana State University, New Orleans, Louisiana, USA
| | - Amy Scarborough
- Cardiovascular Center of Excellence, School of Medicine, Louisiana State University, New Orleans, Louisiana, USA
| | - Thomas Sharp
- Cardiovascular Center of Excellence, School of Medicine, Louisiana State University, New Orleans, Louisiana, USA
| | | | | | - Jan Ivey
- Ochsner Medical Center, New Orleans, Louisiana, USA
| | - Darla L. Tharp
- Department of Biomedical Sciences, University of Missouri-Columbia, Missouri, USA
| | - Jeffrey Schumacher
- Cardiovascular Center of Excellence, School of Medicine, Louisiana State University, New Orleans, Louisiana, USA
| | - Zach Rozenbaum
- Tulane University School of Medicine, New Orleans, Louisiana, USA
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Jay K. Kolls
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Douglas Bowles
- Department of Biomedical Sciences, University of Missouri-Columbia, Missouri, USA
| | - David Lefer
- Cardiovascular Center of Excellence, School of Medicine, Louisiana State University, New Orleans, Louisiana, USA
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Ahmed RU, Knibbe CA, Wilkins F, Sherwood LC, Howland DR, Boakye M. Porcine spinal cord injury model for translational research across multiple functional systems. Exp Neurol 2023; 359:114267. [PMID: 36356636 DOI: 10.1016/j.expneurol.2022.114267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/01/2022] [Indexed: 11/09/2022]
Abstract
Animal models are necessary to identify pathological changes and help assess therapeutic outcomes following spinal cord injury (SCI). Small animal models offer value in research in terms of their easily managed size, minimal maintenance requirements, lower cost, well-characterized genomes, and ability to power research studies. However, despite these benefits, small animal models have neurologic and anatomical differences that may influence translation of results to humans and thus limiting the success of their use in preclinical studies as a direct pipeline to clinical studies. Large animal models, offer an attractive intermediary translation model that may be more successful in translating to the clinic for SCI research. This is largely due to their greater neurologic and anatomical similarities to humans. The physical characteristics of pig spinal cord, gut microbiome, metabolism, proportions of white to grey matter, bowel anatomy and function, and urinary system are strikingly similar and provide great insight into human SCI conditions. In this review, we address the variety of existing porcine injury models and their translational relevance, benefits, and drawbacks in modeling human systems and functions for neurophysiology, cardiovascular, gastrointestinal and urodynamic functions.
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Affiliation(s)
- Rakib Uddin Ahmed
- Department of Neurological Surgery and Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, USA.
| | - Chase A Knibbe
- Department of Neurological Surgery and Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, USA
| | - Felicia Wilkins
- Department of Neurological Surgery and Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, USA
| | - Leslie C Sherwood
- Comparative Medicine Research Unit, University of Louisville, Louisville, KY, USA
| | - Dena R Howland
- Department of Neurological Surgery and Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, USA; Robley Rex VA Medical Center, Louisville, KY 40202, USA
| | - Maxwell Boakye
- Department of Neurological Surgery and Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, USA
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Macvanin M, Gluvic Z, Radovanovic J, Essack M, Gao X, Isenovic ER. New insights on the cardiovascular effects of IGF-1. Front Endocrinol (Lausanne) 2023; 14:1142644. [PMID: 36843588 PMCID: PMC9947133 DOI: 10.3389/fendo.2023.1142644] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 01/26/2023] [Indexed: 02/11/2023] Open
Abstract
INTRODUCTION Cardiovascular (CV) disorders are steadily increasing, making them the world's most prevalent health issue. New research highlights the importance of insulin-like growth factor 1 (IGF-1) for maintaining CV health. METHODS We searched PubMed and MEDLINE for English and non-English articles with English abstracts published between 1957 (when the first report on IGF-1 identification was published) and 2022. The top search terms were: IGF-1, cardiovascular disease, IGF-1 receptors, IGF-1 and microRNAs, therapeutic interventions with IGF-1, IGF-1 and diabetes, IGF-1 and cardiovascular disease. The search retrieved original peer-reviewed articles, which were further analyzed, focusing on the role of IGF-1 in pathophysiological conditions. We specifically focused on including the most recent findings published in the past five years. RESULTS IGF-1, an anabolic growth factor, regulates cell division, proliferation, and survival. In addition to its well-known growth-promoting and metabolic effects, there is mounting evidence that IGF-1 plays a specialized role in the complex activities that underpin CV function. IGF-1 promotes cardiac development and improves cardiac output, stroke volume, contractility, and ejection fraction. Furthermore, IGF-1 mediates many growth hormones (GH) actions. IGF-1 stimulates contractility and tissue remodeling in humans to improve heart function after myocardial infarction. IGF-1 also improves the lipid profile, lowers insulin levels, increases insulin sensitivity, and promotes glucose metabolism. These findings point to the intriguing medicinal potential of IGF-1. Human studies associate low serum levels of free or total IGF-1 with an increased risk of CV and cerebrovascular illness. Extensive human trials are being conducted to investigate the therapeutic efficacy and outcomes of IGF-1-related therapy. DISCUSSION We anticipate the development of novel IGF-1-related therapy with minimal side effects. This review discusses recent findings on the role of IGF-1 in the cardiovascular (CVD) system, including both normal and pathological conditions. We also discuss progress in therapeutic interventions aimed at targeting the IGF axis and provide insights into the epigenetic regulation of IGF-1 mediated by microRNAs.
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Affiliation(s)
- Mirjana Macvanin
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
- *Correspondence: Mirjana Macvanin,
| | - Zoran Gluvic
- Clinic for Internal Medicine, Department of Endocrinology and Diabetes, Zemun Clinical Hospital, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jelena Radovanovic
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Magbubah Essack
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computer Science Program, Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Xin Gao
- Computational Bioscience Research Center (CBRC), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
- Computer Science Program, Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Esma R. Isenovic
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Immunosuppressive regimens in porcine transplantation models. Transplant Rev (Orlando) 2022; 36:100725. [PMID: 36054957 DOI: 10.1016/j.trre.2022.100725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/21/2022] [Accepted: 08/24/2022] [Indexed: 01/12/2023]
Abstract
Pigs, or Sus scrofa domestica, are commonly used animal models in translational transplantation research due to their anatomical, physiological, and immunological similarities to humans. In solid organ transplantation studies, immunosuppressive medications may be administered to pigs to prevent rejection. We provide an overview of the immunosuppressive regimens used in allogeneic solid organ transplantation in pigs, including heart, lung, kidney, bowel and cotransplanted organs and focus on the use of tacrolimus, mycophenolate mofetil, and corticosteroids.
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The Sheep as a Large Animal Model for the Investigation and Treatment of Human Disorders. BIOLOGY 2022; 11:biology11091251. [PMID: 36138730 PMCID: PMC9495394 DOI: 10.3390/biology11091251] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/08/2022] [Accepted: 08/16/2022] [Indexed: 12/19/2022]
Abstract
Simple Summary We review the value of large animal models for improving the translation of biomedical research for human application, focusing primarily on sheep. Abstract An essential aim of biomedical research is to translate basic science information obtained from preclinical research using small and large animal models into clinical practice for the benefit of humans. Research on rodent models has enhanced our understanding of complex pathophysiology, thus providing potential translational pathways. However, the success of translating drugs from pre-clinical to clinical therapy has been poor, partly due to the choice of experimental model. The sheep model, in particular, is being increasingly applied to the field of biomedical research and is arguably one of the most influential models of human organ systems. It has provided essential tools and insights into cardiovascular disorder, orthopaedic examination, reproduction, gene therapy, and new insights into neurodegenerative research. Unlike the widely adopted rodent model, the use of the sheep model has an advantage over improving neuroscientific translation, in particular due to its large body size, gyrencephalic brain, long lifespan, more extended gestation period, and similarities in neuroanatomical structures to humans. This review aims to summarise the current status of sheep to model various human diseases and enable researchers to make informed decisions when considering sheep as a human biomedical model.
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Cheng H, Li G, Dai J, Zhang K, Xu T, Wei L, Zhang X, Ding D, Hou J, Li J, Zhuang J, Tan K, Guo R. A fluid-structure interaction model accounting arterial vessels as a key part of the blood-flow engine for the analysis of cardiovascular diseases. Front Bioeng Biotechnol 2022; 10:981187. [PMID: 36061431 PMCID: PMC9438578 DOI: 10.3389/fbioe.2022.981187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/28/2022] [Indexed: 11/13/2022] Open
Abstract
According to the classical Windkessel model, the heart is the only power source for blood flow, while the arterial system is assumed to be an elastic chamber that acts as a channel and buffer for blood circulation. In this paper we show that in addition to the power provided by the heart for blood circulation, strain energy stored in deformed arterial vessels in vivo can be transformed into mechanical work to propel blood flow. A quantitative relationship between the strain energy increment and functional (systolic, diastolic, mean and pulse blood pressure) and structural (stiffness, diameter and wall thickness) parameters of the aorta is described. In addition, details of blood flow across the aorta remain unclear due to changes in functional and other physiological parameters. Based on the arterial strain energy and fluid-structure interaction theory, the relationship between physiological parameters and blood supply to organs was studied, and a corresponding mathematical model was developed. The findings provided a new understanding about blood-flow circulation, that is, cardiac output allows blood to enter the aorta at an initial rate, and then strain energy stored in the elastic arteries pushes blood toward distal organs and tissues. Organ blood supply is a key factor in cardio-cerebrovascular diseases (CCVD), which are caused by changes in blood supply in combination with multiple physiological parameters. Also, some physiological parameters are affected by changes in blood supply, and vice versa. The model can explain the pathophysiological mechanisms of chronic diseases such as CCVD and hypertension among others, and the results are in good agreement with epidemiological studies of CCVD.
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Affiliation(s)
- Heming Cheng
- Department of Mechanics, Kunming University of Science and Technology, Kunming, China
- *Correspondence: Heming Cheng, ; Ke Zhang,
| | - Gen Li
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Jifeng Dai
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Ke Zhang
- Department of Mechanics, Kunming University of Science and Technology, Kunming, China
- Department of Hydraulic Engineering, Kunming University of Science and Technology, Kunming, China
- *Correspondence: Heming Cheng, ; Ke Zhang,
| | - Tianrui Xu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Liuchuang Wei
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Xue Zhang
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Dongfang Ding
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Jie Hou
- Department of Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Jianyun Li
- Department of Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Jiangping Zhuang
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Kaijun Tan
- Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, China
| | - Ran Guo
- Department of Mechanics, Kunming University of Science and Technology, Kunming, China
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Myostatin deficiency decreases cardiac extracellular matrix in pigs. Transgenic Res 2022; 31:553-565. [PMID: 35978205 DOI: 10.1007/s11248-022-00322-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 08/03/2022] [Indexed: 10/15/2022]
Abstract
Myostatin (MSTN), a member of the TGF-β superfamily, negatively regulates muscle growth. MSTN inhibition has been known to cause a double-muscled phenotype in skeletal muscle and fibrosis reduction in the heart. However, the role of MSTN in the cardiac extracellular matrix (ECM) needs more studies in various species of animal models to draw more objective conclusions. The main objective of the present study was to investigate whether loss of MSTN affects the cardiac extracellular matrix in pigs. Three MSTN knockouts (MSTN-/-) and three wild type (WT) male pigs were generated by crossing MSTN ± heterozygous gilts and boars. Cardiac ECM and underlying mechanisms were determined post-mortem. The role of MSTN on collagen expression was investigated by treating cardiac fibroblasts with active MSTN protein in vitro. MSTN protein was detected in WT hearts, while no expression was detected in MSTN-/- hearts. The heart-to-body weight ratio was significantly decreased in MSTN-/- pigs. The morphometric analyses, including picrosirius red staining, immunofluorescent staining, and ultra-structural thickness examination of the endomysium, revealed a significant reduction of connective tissue content in MSTN-/- hearts compared to WT. Hydroxyproline, type I collagen (Col1A), and p-Smad3/Smad3 levels were significantly lower in MSTN-/- hearts in vivo. On the contrary, cardiac fibroblasts treated with exogenous MSTN protein overexpressed Col1A and activated Smad and AKT signaling pathways in vitro. The present study suggests that inhibition of MSTN decreases cardiac extracellular matrix.
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Ultrasound-guided femoral approach for coronary angiography and interventions in the porcine model. Sci Rep 2022; 12:13909. [PMID: 35977960 PMCID: PMC9385663 DOI: 10.1038/s41598-022-17436-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
Coronary angiography and percutaneous coronary intervention (PCI) procedural details in swine are similar to those performed to humans, since their heart and coronary anatomy closely resembles. However, only a few detailed descriptions of the procedure are available, containing notable differences. We present a feasible and reproducible protocol for percutaneous coronary interventions in porcine experimental models, utilizing ultrasound-guided femoral approach. Nine female pigs were studied to explore the feasibility of superficial femoral arterial (SFA) access for coronary angiography and provisional PCI, as well as the most suitable guiding coronary catheters and angiographic projections for the above interventions. Experiments were performed under general anesthesia, using ultrasound-guided puncture of the SFA to gain arterial access. The Amplatzer AR1® catheter, and the Right Coronary Bypass® catheter were used for the selective engagement of the right and the left coronary artery, respectively. Successful arterial access and subsequent cardiac catheterization were performed in all pigs. Only one animal required a second puncture for femoral artery access. None of the 9 animals presented any significant tachycardia or hypotensive episode. One animal developed an access site-related complication following the first catheterization procedure. During follow-up, 100% success of SFA catheterization was achieved using the same ultrasound-guided technique. The ultrasound-guided superficial femoral artery access for coronary angiography and provisional interventions in porcine models is a quick and safe alternative to the carotid artery approach. The RCB and AR1 catheters may be the best choice for the quick and easy selective coronary engagement of the right and left ostia, respectively.
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12
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Zaballos M, Fernández I, Rodríguez L, García S, Varela O, Quintela O, Anadón MJ, Almendral J. Effects of intravenous lipid emulsions on the reversal of pacing-induced ventricular arrhythmias and electrophysiological alterations in an animal model of ropivacaine toxicity. Clin Toxicol (Phila) 2022; 60:902-911. [PMID: 35658706 DOI: 10.1080/15563650.2022.2080075] [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: 11/03/2022]
Abstract
INTRODUCTION Ropivacaine is considered to have a wider margin of cardiovascular safety. However, several reports of ventricular arrhythmias (VA) due to ropivacaine toxicity have been documented. Intravenous lipid emulsions (ILEs) have recently been used successfully in the treatment of local anesthetic intoxication. The main objective of the present study was to evaluate the efficacy of the ILEs in the prevention of pacing-induced-VA and electrophysiological alterations in an animal model of ropivacaine toxicity. METHODS Nineteen pigs were anesthetized and instrumentalized. A baseline programmed electrical ventricular stimulation protocol (PEVSP) to induce VA was performed. Ropivacaine (5 mg·kg-1 + 100 μg·kg-1·min-1) followed by normal saline infusion (control group n = 8) or intralipid 20% (1.5 mL·kg-1 + 0.25 mL·kg-1·min-1) for the ILE group (n = 8), were administered three minutes after the ropivacaine bolus. PEVSP was repeated 25 min after the onset of ropivacaine infusion. Pacing-induced VA and electrophysiological abnormalities were assessed in both groups. A sham-control group (n = 3) without ropivacaine infusion was included. RESULTS Most of the electrophysiological parameters evaluated were affected by ropivacaine: PR interval by 28% (p = 0.001), AV interval by 40% (p = 0.001), sinus QRS by 101% (p = 0.001), paced QRS at a rate of 150 bpm by 258% (p = 0.001), and at 120 bpm by 241% (p = 0.001). Seven animals (87.5%) in the control group and eight animals (100%) in the ILE group developed sustained-VA (p = 0.30). Successful resuscitation occurred in 100% of animals in the ILE group vs. 57% of animals in the control group, p = 0.038. Pacing-induced-VA terminated at the first defibrillation attempt in 75% of the animals in the ILE group vs. 0% in the control group, p = 0.01. CONCLUSION Ropivacaine strongly altered the parameters of ventricular conduction, thus facilitating the induction of VA. ILEs did not prevent pacing-induced VA. However, facilitated resuscitation and termination of VA were delivered at the first defibrillation attempt compared to the control group.
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Affiliation(s)
- Matilde Zaballos
- Department of Forensic Medicine, Psychiatry and Pathology, Department of Anaesthesiology, Faculty of Medicine, Complutense University, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Ignacio Fernández
- Department of Anesthesiology, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Lucia Rodríguez
- Department of Anesthesiology, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Sergio García
- Department of Anesthesiology, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Olalla Varela
- Department of Anesthesiology, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Oscar Quintela
- Department of Forensic Medicine, Psychiatry and Pathology, Faculty of Medicine, Complutense University, Madrid, Spain
| | - María-José Anadón
- Head Department of Forensic Medicine, Psychiatry and Pathology, Faculty of Medicine, National Institute of Toxicology and Forensic Science, Complutense University, Madrid, Spain
| | - Jesús Almendral
- Electrophysiology Arrhythmia Unit, Hospital Monteprincipe Grupo HM Hospitales, University CEU-San Pablo, Madrid, Spain
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13
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Intrinsic cardiac neurons of the adult pigs: chemical types, abundance, parameters and distribution within ganglionated plexus. Ann Anat 2022; 243:151935. [DOI: 10.1016/j.aanat.2022.151935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 03/04/2022] [Accepted: 03/09/2022] [Indexed: 11/18/2022]
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14
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Vekstein AM, Wendell DC, DeLuca S, Yan R, Chen Y, Bishawi M, Devlin GW, Asokan A, Poss KD, Bowles DE, Williams AR, Bursac N. Targeted Delivery for Cardiac Regeneration: Comparison of Intra-coronary Infusion and Intra-myocardial Injection in Porcine Hearts. Front Cardiovasc Med 2022; 9:833335. [PMID: 35224061 PMCID: PMC8866722 DOI: 10.3389/fcvm.2022.833335] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The optimal delivery route to enhance effectiveness of regenerative therapeutics to the human heart is poorly understood. Direct intra-myocardial (IM) injection is the gold standard, however, it is relatively invasive. We thus compared targeted IM against less invasive, catheter-based intra-coronary (IC) delivery to porcine myocardium for the acute retention of nanoparticles using cardiac magnetic resonance (CMR) imaging and viral vector transduction using qPCR. METHODS Ferumoxytol iron oxide (IO) nanoparticles (5 ml) were administered to Yorkshire swine (n = 13) by: (1) IM via thoracotomy, (2) catheter-based IC balloon-occlusion (BO) with infusion into the distal left anterior descending (LAD) coronary artery, (3) IC perforated side-wall (SW) infusion into the LAD, or (4) non-selective IC via left main (LM) coronary artery infusion. Hearts were harvested and imaged using at 3T whole-body MRI scanner. In separate Yorkshire swine (n = 13), an adeno-associated virus (AAV) vector was similarly delivered, tissue harvested 4-6 weeks later, and viral DNA quantified from predefined areas at risk (apical LV/RV) vs. not at risk in a potential mid-LAD infarct model. Results were analyzed using pairwise Student's t-test. RESULTS IM delivery yielded the highest IO retention (16.0 ± 4.6% of left ventricular volume). Of the IC approaches, BO showed the highest IO retention (8.7 ± 2.2% vs. SW = 5.5 ± 4.9% and LM = 0%) and yielded consistent uptake in the porcine distal LAD territory, including the apical septum, LV, and RV. IM delivery was limited to the apex and anterior wall, without septal retention. For the AAV delivery, the BO was most efficient in the at risk territory (Risk: BO = 6.0 × 10-9, IM = 1.4 × 10-9, LM = 3.2 × 10-10 viral copies per μg genomic DNA) while all delivery routes were comparable in the non-risk territory (BO = 1.7 × 10-9, IM = 8.9 × 10-10, LM = 1.2 × 10-9). CONCLUSIONS Direct IM injection has the highest local retention, while IC delivery with balloon occlusion and distal infusion is the most effective IC delivery technique to target therapeutics to a heart territory most in risk from an infarct.
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Affiliation(s)
- Andrew M. Vekstein
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, NC, United States
| | - David C. Wendell
- Duke Cardiovascular Magnetic Resonance Center, Duke University Medical Center, Durham, NC, United States
| | - Sophia DeLuca
- Department of Biomedical Engineering, Duke University, Durham, NC, United States
- Department of Cell Biology, Duke Regeneration Center, Duke University, Durham, NC, United States
| | - Ruorong Yan
- Department of Cell Biology, Duke Regeneration Center, Duke University, Durham, NC, United States
| | - Yifan Chen
- Department of Biomedical Engineering, Duke University, Durham, NC, United States
| | - Muath Bishawi
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, NC, United States
| | - Garth W. Devlin
- Department of Biomedical Engineering, Duke University, Durham, NC, United States
- Department of Surgery, Duke University Medical Center, Durham, NC, United States
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC, United States
| | - Aravind Asokan
- Department of Biomedical Engineering, Duke University, Durham, NC, United States
- Department of Surgery, Duke University Medical Center, Durham, NC, United States
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC, United States
| | - Kenneth D. Poss
- Department of Cell Biology, Duke Regeneration Center, Duke University, Durham, NC, United States
| | - Dawn E. Bowles
- Department of Surgery, Surgical Sciences, Duke University Medical Center, Durham, NC, United States
| | - Adam R. Williams
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, NC, United States
| | - Nenad Bursac
- Department of Biomedical Engineering, Duke University, Durham, NC, United States
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15
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Lunney JK, Van Goor A, Walker KE, Hailstock T, Franklin J, Dai C. Importance of the pig as a human biomedical model. Sci Transl Med 2021; 13:eabd5758. [PMID: 34818055 DOI: 10.1126/scitranslmed.abd5758] [Citation(s) in RCA: 241] [Impact Index Per Article: 80.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Joan K Lunney
- Animal Parasitic Diseases Laboratory, BARC, NEA, ARS, USDA, Beltsville, MD 20705, USA
| | - Angelica Van Goor
- Animal Parasitic Diseases Laboratory, BARC, NEA, ARS, USDA, Beltsville, MD 20705, USA
| | - Kristen E Walker
- Animal Parasitic Diseases Laboratory, BARC, NEA, ARS, USDA, Beltsville, MD 20705, USA
| | - Taylor Hailstock
- Animal Parasitic Diseases Laboratory, BARC, NEA, ARS, USDA, Beltsville, MD 20705, USA
| | - Jasmine Franklin
- Animal Parasitic Diseases Laboratory, BARC, NEA, ARS, USDA, Beltsville, MD 20705, USA
| | - Chaohui Dai
- Animal Parasitic Diseases Laboratory, BARC, NEA, ARS, USDA, Beltsville, MD 20705, USA.,College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
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16
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Ragauskas T, Rysevaite-Kyguoliene K, Pauziene N, Inokaitis H, Pauza DH. Chemical phenotypes of intrinsic cardiac neurons in the newborn pig (Sus scrofa domesticus Erxleben, 1777). J Morphol 2021; 283:51-65. [PMID: 34727377 DOI: 10.1002/jmor.21426] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/28/2021] [Accepted: 10/30/2021] [Indexed: 11/12/2022]
Abstract
Intrinsic cardiac neurons (ICNs) are crucial cells in the neural regulation of heart rhythm, myocardial contractility, and coronary blood flow. ICNs exhibit diversity in their morphology and neurotransmitters that probably are age-dependent. Therefore, neuroanatomical heart studies have been currently focused on the identification of chemical phenotypes of ICNs to disclose their possible functions in heart neural regulation. Employing whole-mount immunohistochemistry, we examined ICNs from atria of the newborn pigs (Sus scrofa domesticus) as ICNs at this stage of development have never been neurochemically characterized so far. We found that the majority of the examined ICNs (>60%) were of cholinergic phenotype. Biphenotypic neuronal somata (NS), that is, simultaneously positive for two neuronal markers, were also rather common and distributed evenly within the sampled ganglia. Simultaneous positivity for cholinergic and adrenergic neuromarkers was specific in 16.4%, for cholinergic and nitrergic-in 3.5% of the examined NS. Purely either adrenergic or nitrergic ICNs were observed at 13% and 3.1%, correspondingly. Purely adrenergic and nitrergic NS were the most frequent in the ventral left atrial subplexus. Similarly to neuronal phenotype, sizes of NS also varied depending on the atrial region providing insights into their functional implications. Axons, but not NS, positive for classic sensory neuronal markers (vesicular glutamate transporter 2 and calcitonin gene-related peptide) were identified within epicardiac nerves and ganglia. Moreover, a substantial number of ICNs could not be attributed to any phenotype as they were not immunoreactive for antisera used in this study. Numerous dendrites with putative peptidergic and adrenergic contacts on cholinergic NS contributed to neuropil of ganglia. Our observations demonstrate that intrinsic cardiac ganglionated plexus is not fully developed in the newborn pig despite of dense network of neuronal processes and numerous signs of neural contacts within ganglia.
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Affiliation(s)
- Tomas Ragauskas
- Institute of Anatomy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | | | - Neringa Pauziene
- Institute of Anatomy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Hermanas Inokaitis
- Institute of Anatomy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Dainius Haroldas Pauza
- Institute of Anatomy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
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17
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Nawrocki MJ, Jopek K, Zdun M, Mozdziak P, Jemielity M, Perek B, Bukowska D, Kempisty B. Expression Profile of Genes Encoding Proteins Involved in Regulation of Vasculature Development and Heart Muscle Morphogenesis-A Transcriptomic Approach Based on a Porcine Model. Int J Mol Sci 2021; 22:ijms22168794. [PMID: 34445494 PMCID: PMC8395751 DOI: 10.3390/ijms22168794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/08/2021] [Accepted: 08/12/2021] [Indexed: 11/16/2022] Open
Abstract
Despite significant advances in treatment of acute coronary syndromes (ACS) many subjects still develop heart failure due to significantly reduced ejection fraction. Currently, there are no commonly available treatment strategies that replace the infarcted/dysfunctional myocardium. Therefore, understanding the mechanisms that control the regeneration of the heart muscle is important. The development of new coronary vessels plays a pivotal role in cardiac regeneration. Employing microarray expression assays and RT-qPCR validation expression pattern of genes in long-term primary cultured cells isolated form the right atrial appendage (RAA) and right atrium (RA) was evaluated. After using DAVID software, it indicated the analysis expression profiles of genes involved in ontological groups such as: “angiogenesis”, “blood vessel morphogenesis”, “circulatory system development”, “regulation of vasculature development”, and “vasculature development” associated with the process of creation new blood vessels. The performed transcriptomic comparative analysis between two different compartments of the heart muscle allowed us to indicate the presence of differences in the expression of key transcripts depending on the cell source. Increases in culture intervals significantly increased expression of SFRP2, PRRX1 genes and some other genes involved in inflammatory process, such as: CCL2, IL6, and ROBO1. Moreover, the right atrial appendage gene encoding lysyl oxidase (LOX) showed much higher expression compared to the pre-cultivation state.
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Affiliation(s)
- Mariusz J. Nawrocki
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznań, Poland;
| | - Karol Jopek
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznań, Poland;
| | - Maciej Zdun
- Department of Basic and Preclinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland;
| | - Paul Mozdziak
- Physiology Graduate Program, North Carolina State University, Raleigh, NC 27695, USA;
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA
| | - Marek Jemielity
- Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, 61-848 Poznań, Poland; (M.J.); (B.P.)
| | - Bartłomiej Perek
- Department of Cardiac Surgery and Transplantology, Poznan University of Medical Sciences, 61-848 Poznań, Poland; (M.J.); (B.P.)
| | - Dorota Bukowska
- Department of Diagnostics and Clinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland;
| | - Bartosz Kempisty
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznań, Poland;
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznań, Poland;
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland
- Correspondence: ; Tel.: +48-61-8546418; Fax: +48-61-8546440
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18
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Richter C, Hinkel R. Research('s) Sweet Hearts: Experimental Biomedical Models of Diabetic Cardiomyopathy. Front Cardiovasc Med 2021; 8:703355. [PMID: 34368257 PMCID: PMC8342758 DOI: 10.3389/fcvm.2021.703355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/28/2021] [Indexed: 11/13/2022] Open
Abstract
Diabetes and the often accompanying cardiovascular diseases including cardiomyopathy represent a complex disease, that is reluctant to reveal the molecular mechanisms and underlying cellular responses. Current research projects on diabetic cardiomyopathy are predominantly based on animal models, in which there are not only obvious advantages, such as genetics that can be traced over generations and the directly measurable influence of dietary types, but also not despisable disadvantages. Thus, many studies are built up on transgenic rodent models, which are partly comparable to symptoms in humans due to their genetic alterations, but on the other hand are also under discussion regarding their clinical relevance in the translation of biomedical therapeutic approaches. Furthermore, a focus on transgenic rodent models ignores spontaneously occurring diabetes in larger mammals (such as dogs or pigs), which represent with their anatomical similarity to humans regarding their cardiovascular situation appealing models for testing translational approaches. With this in mind, we aim to shed light on the currently most popular animal models for diabetic cardiomyopathy and, by weighing the advantages and disadvantages, provide decision support for future animal experimental work in the field, hence advancing the biomedical translation of promising approaches into clinical application.
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Affiliation(s)
- Claudia Richter
- Laboratory Animal Science Unit, German Primate Center, Leibniz Institute for Primate Research, Goettingen, Germany.,Partnersite Goettingen, German Center for Cardiovascular Research (DZHK e.V.), Goettingen, Germany
| | - Rabea Hinkel
- Laboratory Animal Science Unit, German Primate Center, Leibniz Institute for Primate Research, Goettingen, Germany.,Partnersite Goettingen, German Center for Cardiovascular Research (DZHK e.V.), Goettingen, Germany.,Stiftung Tierärztliche Hochschule Hannover, University of Veterinary Medicine, Hanover, Germany
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19
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Morra S, Pitisci L, Su F, Hossein A, Rabineau J, Racape J, Gorlier D, Herpain A, Migeotte PF, Creteur J, van de Borne P. Quantification of Cardiac Kinetic Energy and Its Changes During Transmural Myocardial Infarction Assessed by Multi-Dimensional Seismocardiography. Front Cardiovasc Med 2021; 8:603319. [PMID: 33763456 PMCID: PMC7982421 DOI: 10.3389/fcvm.2021.603319] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 02/08/2021] [Indexed: 11/24/2022] Open
Abstract
Introduction: Seismocardiography (SCG) records cardiac and blood-induced motions transmitted to the chest surface as vibratory phenomena. Evidences demonstrate that acute myocardial ischemia (AMI) profoundly affects the SCG signals. Multidimensional SCG records cardiac vibrations in linear and rotational dimensions, and scalar parameters of kinetic energy can be computed. We speculate that AMI and revascularization profoundly modify cardiac kinetic energy as recorded by SCG. Methods: Under general anesthesia, 21 swine underwent 90 min of myocardial ischemia induced by percutaneous sub-occlusion of the proximal left anterior descending (LAD) coronary artery and subsequent revascularization. Invasive hemodynamic parameters were continuously recorded. SCG was recorded during baseline, immediately and 80 min after LAD sub-occlusion, and immediately and 60 min after LAD reperfusion. iK was automatically computed for each cardiac cycle (iKCC) in linear (iKLin) and rotational (iKRot) dimensions. iK was calculated as well during systole and diastole (iKSys and iKDia, respectively). Echocardiography was performed at baseline and after revascularization, and the left ventricle ejection fraction (LVEF) along with regional left ventricle (LV) wall abnormalities were evaluated. Results: Upon LAD sub-occlusion, 77% of STEMI and 24% of NSTEMI were observed. Compared to baseline, troponins increased from 13.0 (6.5; 21.3) ng/dl to 170.5 (102.5; 475.0) ng/dl, and LVEF dropped from 65.0 ± 0.0 to 30.6 ± 5.7% at the end of revascularization (both p < 0.0001). Regional LV wall abnormalities were observed as follows: anterior MI, 17.6% (three out of 17); septal MI, 5.8% (one out of 17); antero-septal MI, 47.1% (eight out of 17); and infero-septal MI, 29.4% (five out of 17). In the linear dimension, iKLinCC, iKLinSys, and iKLinDia dropped by 43, 52, and 53%, respectively (p < 0.0001, p < 0.0001, and p = 0.03, respectively) from baseline to the end of reperfusion. In the rotational dimension, iKRotCC and iKRotSys dropped by 30 and 36%, respectively (p = 0.0006 and p < 0.0001, respectively), but iKRotDia did not change (p = 0.41). All the hemodynamic parameters, except the pulmonary artery pulse pressure, were significantly correlated with the parameters of iK, except for the diastolic component. Conclusions: In this very context of experimental AMI with acute LV regional dysfunction and no concomitant AMI-related heart valve disease, linear and rotational iK parameters, in particular, systolic ones, provide reliable information on LV contractile dysfunction and its effects on the downstream circulation. Multidimensional SCG may provide information on the cardiac contractile status expressed in terms of iK during AMI and reperfusion. This automatic system may empower health care providers and patients to remotely monitor cardiovascular status in the near future.
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Affiliation(s)
- Sofia Morra
- Department of Cardiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Lorenzo Pitisci
- Department of Cardiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium.,Experimental Laboratory of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Fuhong Su
- Experimental Laboratory of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Amin Hossein
- Laboratory of Physic and Physiology (LPHYS), Université Libre de Bruxelles, Brussels, Belgium
| | - Jérémy Rabineau
- Laboratory of Physic and Physiology (LPHYS), Université Libre de Bruxelles, Brussels, Belgium
| | - Judith Racape
- Research Center in Epidemiology, Biostatistics and Clinical Research, School of Public Health, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Damien Gorlier
- Laboratory of Physic and Physiology (LPHYS), Université Libre de Bruxelles, Brussels, Belgium
| | - Antoine Herpain
- Experimental Laboratory of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium.,Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | | | - Jacques Creteur
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Philippe van de Borne
- Department of Cardiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
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20
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Iacobazzi D, Rapetto F, Albertario A, Swim MM, Narayan S, Skeffington K, Salih T, Alvino VV, Madeddu P, Ghorbel MT, Caputo M. Wharton's Jelly-Mesenchymal Stem Cell-Engineered Conduit for Pediatric Translation in Heart Defect. Tissue Eng Part A 2021; 27:201-213. [PMID: 32571164 DOI: 10.1089/ten.tea.2020.0088] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The materials available for the right ventricular outflow tract (RVOT) reconstruction in patients with tetralogy of fallot (TOF)/pulmonary atresia come with the severe limitation of long-term degeneration and lack of growth potential, causing right ventricular dysfunction, aneurysm formation, and arrhythmias, thus necessitating several high-risk reoperations throughout patients' lives. In this study, we evaluated the capacity of mesenchymal stem cells (MSCs) derived from the Wharton's Jelly (WJ-MSCs), the gelatinous inner portion of the umbilical cord, to grow and recellularize an extracellular matrix (ECM) graft in our optimized xeno-free, good manufacturing practice-compliant culture system. WJ-MSCs were phenotypically and functionally characterized by flow cytometry and multilineage differentiation capacity, respectively. The typical MSC immunophenotype and functional characteristics were retained in our xeno-free culture system, as well as the capacity to grow and engraft onto a naturally occurring scaffold. WJ-MSCs, from both human and swine source, showed excellent capacity to recellularize ECM graft producing a living cell-seeded construct. In addition, we have provided an in vivo proof of concept of feasibility of the cellularized conduit, engineered with swine WJ-MSCs, to be used in a novel porcine model of main pulmonary artery reconstruction, where it showed good integration within the host tissue. Our study indicates that the addition of WJ-MSCs to the ECM scaffold can upgrade the material, converting it into a living tissue, with the potential to grow, repair, and remodel the RVOT. These results could potentially represent a paradigm shift in pediatric cardiac intervention toward new modalities for effective and personalized surgical restoration of pulmonary artery and RVOT function in TOF/pulmonary atresia patients. Impact Statement The materials available for pulmonary artery reconstruction in pediatric patients with Congenital Heart Defect come with the limitation of long-term degeneration and lack of growth, thus necessitating several reoperations. Here, we describe a novel approach combining perinatal stem cells and naturally occurring scaffold to create a living tissue engineered conduit that showed good growth potential in a pulmonary artery reconstruction porcine model. We envision this approach is of great interest and relevance in tissue engineering field applied to cardiovascular regenerative medicine, as it may open up new avenues for correction of congenital cardiac defects, with remarkable medical and social benefits.
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Affiliation(s)
- Dominga Iacobazzi
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Filippo Rapetto
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Ambra Albertario
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Megan M Swim
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Srinivas Narayan
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Katie Skeffington
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Tasneem Salih
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Vincenza Valeria Alvino
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Paolo Madeddu
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Mohamed T Ghorbel
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
| | - Massimo Caputo
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom
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21
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Aluthge ND, Tom WA, Bartenslager AC, Burkey TE, Miller PS, Heath KD, Kreikemeier-Bower C, Kittana H, Schmaltz RJ, Ramer-Tait AE, Fernando SC. Differential longitudinal establishment of human fecal bacterial communities in germ-free porcine and murine models. Commun Biol 2020; 3:760. [PMID: 33311550 PMCID: PMC7733510 DOI: 10.1038/s42003-020-01477-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023] Open
Abstract
The majority of microbiome studies focused on understanding mechanistic relationships between the host and the microbiota have used mice and other rodents as the model of choice. However, the domestic pig is a relevant model that is currently underutilized for human microbiome investigations. In this study, we performed a direct comparison of the engraftment of fecal bacterial communities from human donors between human microbiota-associated (HMA) piglet and mouse models under identical dietary conditions. Analysis of 16S rRNA genes using amplicon sequence variants (ASVs) revealed that with the exception of early microbiota from infants, the more mature microbiotas tested established better in the HMA piglets compared to HMA mice. Of interest was the greater transplantation success of members belonging to phylum Firmicutes in the HMA piglets compared to the HMA mice. Together, these results provide evidence for the HMA piglet model potentially being more broadly applicable for donors with more mature microbiotas while the HMA mouse model might be more relevant for developing microbiotas such as those of infants. This study also emphasizes the necessity to exercise caution in extrapolating findings from HMA animals to humans, since up to 28% of taxa from some donors failed to colonize either model.
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Affiliation(s)
- Nirosh D Aluthge
- Department of Animal Science, University of Nebraska-Lincoln, Animal Science Complex, 3940 Fair St., Lincoln, NE, 68583-0908, USA.,Department of Food Science and Technology, Food Innovation Center, University of Nebraska-Lincoln, 1901 N 21st St., Lincoln, NE, 68588-6205, USA
| | - Wesley A Tom
- Department of Animal Science, University of Nebraska-Lincoln, Animal Science Complex, 3940 Fair St., Lincoln, NE, 68583-0908, USA.,School of Biological Sciences, University of Nebraska-Lincoln, Manter Hall, 1104 T St., Lincoln, NE, 68588-0118, USA
| | - Alison C Bartenslager
- Department of Animal Science, University of Nebraska-Lincoln, Animal Science Complex, 3940 Fair St., Lincoln, NE, 68583-0908, USA
| | - Thomas E Burkey
- Department of Animal Science, University of Nebraska-Lincoln, Animal Science Complex, 3940 Fair St., Lincoln, NE, 68583-0908, USA
| | - Phillip S Miller
- Department of Animal Science, University of Nebraska-Lincoln, Animal Science Complex, 3940 Fair St., Lincoln, NE, 68583-0908, USA
| | - Kelly D Heath
- Institutional Animal Care Program, University of Nebraska-Lincoln, 110 Mussehl Hall, 1915 N 38th St., Lincoln, NE, 68653-0720, USA
| | - Craig Kreikemeier-Bower
- Institutional Animal Care Program, University of Nebraska-Lincoln, 110 Mussehl Hall, 1915 N 38th St., Lincoln, NE, 68653-0720, USA
| | - Hatem Kittana
- Department of Food Science and Technology, Food Innovation Center, University of Nebraska-Lincoln, 1901 N 21st St., Lincoln, NE, 68588-6205, USA.,Veterinary Medical Diagnostic Laboratory (VMDL) at University of Missouri (MU), 901 E Campus Loop, Columbia, MO, 65211, USA
| | - Robert J Schmaltz
- Department of Food Science and Technology, Food Innovation Center, University of Nebraska-Lincoln, 1901 N 21st St., Lincoln, NE, 68588-6205, USA
| | - Amanda E Ramer-Tait
- Department of Food Science and Technology, Food Innovation Center, University of Nebraska-Lincoln, 1901 N 21st St., Lincoln, NE, 68588-6205, USA
| | - Samodha C Fernando
- Department of Animal Science, University of Nebraska-Lincoln, Animal Science Complex, 3940 Fair St., Lincoln, NE, 68583-0908, USA.
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22
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Salvig CD, Benhassen LL, Nygaard JV, Johansen P, Skov SN, Michael Hasenkam J. The importance of collagen composition and biomechanics for the porcine aortic root. J Biomech 2020; 111:110009. [PMID: 32950936 DOI: 10.1016/j.jbiomech.2020.110009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 07/23/2020] [Accepted: 08/18/2020] [Indexed: 11/19/2022]
Abstract
A thorough understanding of the aortic root structure and biomechanics is necessary when performing aortic valve-sparing procedures in patients with aortic root aneurysms. This study aimed to evaluate the amount of collagen and biomechanics at different levels and segments of the aortic root. Ten aortic roots from healthy pigs were excised including the aortic annulus, the sinuses of Valsalva, and the sinotubular junction (STJ). Specimens were further divided into three circumferential segments; left coronary (LC)-, right coronary (RC)-, and non-coronary (NC) sinus. Collagen was determined using hydroxyproline analysis and specimens were tested biomechanically for stress-strain relations. The annulus showed significantly larger average maximum stiffness (9.6 ± 4.5 N/mm) compared with the sinus (4.5 ± 2.0 N/mm) and STJ (4.8 ± 1.8 N/mm). The average collagen content was likewise higher in the annulus (4.0 ± 1.0 mg/ml) compared with the sinus (2.4 ± 0.6 mg/ml) and STJ (2.2 ± 0.5 mg/ml) for all three segments. The NC sinus segment exhibited a significantly larger maximum stiffness and stress under static conditions compared with the RC. These results suggest that the aortic root is heterogeneous in both structure and biomechanical properties and that it varies both in levels and segments of the aortic root. Future surgical approaches should consider enhanced strength parameters for specific areas of the aortic root to achieve the best results when performing aortic valve-sparing techniques. From this study, we conclude that the aortic annulus needs special attention to imitate normal physiologic properties during aortic valve-sparing surgery due to its higher maximum stiffness, stress, and load. Modified future surgical procedures could potentially prevent recurrent aneurysmal formation.
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Affiliation(s)
- Camilla D Salvig
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, 8200 Aarhus N, Denmark; Department of Clinical Medicine, Aarhus University Hospital, 8200 Aarhus N, Denmark.
| | - Leila L Benhassen
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, 8200 Aarhus N, Denmark; Department of Clinical Medicine, Aarhus University Hospital, 8200 Aarhus N, Denmark
| | - Jens V Nygaard
- Department of Engineering, Aarhus University, 8000 Aarhus C, Denmark
| | - Peter Johansen
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, 8200 Aarhus N, Denmark; Department of Engineering, Aarhus University, 8000 Aarhus C, Denmark
| | - Søren N Skov
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, 8200 Aarhus N, Denmark; Department of Clinical Medicine, Aarhus University Hospital, 8200 Aarhus N, Denmark
| | - J Michael Hasenkam
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, 8200 Aarhus N, Denmark; Department of Clinical Medicine, Aarhus University Hospital, 8200 Aarhus N, Denmark
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23
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Reyneveld GIJ, Savelkoul HFJ, Parmentier HK. Current Understanding of Natural Antibodies and Exploring the Possibilities of Modulation Using Veterinary Models. A Review. Front Immunol 2020; 11:2139. [PMID: 33013904 PMCID: PMC7511776 DOI: 10.3389/fimmu.2020.02139] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 08/06/2020] [Indexed: 12/20/2022] Open
Abstract
Natural antibodies (NAb) are defined as germline encoded immunoglobulins found in individuals without (known) prior antigenic experience. NAb bind exogenous (e.g., bacterial) and self-components and have been found in every vertebrate species tested. NAb likely act as a first-line immune defense against infections. A large part of NAb, so called natural autoantibodies (NAAb) bind to and clear (self) neo-epitopes, apoptotic, and necrotic cells. Such self-binding antibodies cannot, however, be considered as pathogenic autoantibodies in the classical sense. IgM and IgG NAb and NAAb and their implications in health and disease are relatively well-described in humans and mice. NAb are present in veterinary (and wildlife) species, but their relation with diseases and disorders in veterinary species are much less known. Also, there is little known of IgA NAb. IgA is the most abundant immunoglobulin with essential pro-inflammatory and homeostatic properties urging for more research on the importance of IgA NAb. Since NAb in humans were indicated to fulfill important functions in health and disease, their role in health of veterinary species should be investigated more often. Furthermore, it is unknown whether levels of NAb-isotypes and/or idiotypes can and should be modulated. Veterinary species as models of choice fill in a niche between mice and (non-human) primates, and the study of NAb in veterinary species may provide valuable new insights that will likely improve health management. Below, examples of the involvement of NAb in several diseases in mostly humans are shown. Possibilities of intravenous immunoglobulin administration, targeted immunotherapy, immunization, diet, and genetic modulation are discussed, all of which could be well-studied using animal models. Arguments are given why veterinary immunology should obtain inspiration from human studies and why human immunology would benefit from veterinary models. Within the One Health concept, findings from veterinary (and wildlife) studies can be related to human studies and vice versa so that both fields will mutually benefit. This will lead to a better understanding of NAb: their origin, activation mechanisms, and their implications in health and disease, and will lead to novel health management strategies for both human and veterinary species.
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Affiliation(s)
- G. IJsbrand Reyneveld
- Faculty of Science, VU University, Amsterdam, Netherlands
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, Netherlands
| | - Huub F. J. Savelkoul
- Cell Biology and Immunology Group, Department of Animal Sciences, Wageningen University, Wageningen, Netherlands
| | - Henk K. Parmentier
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, Netherlands
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24
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Zuo K, Koh LB, Charles CJ, Yim EKF, Lim J, Li RR, Leo HL, Cui F, Ho P. Measurement of the Luminal Diameter of Peripheral Arterial Vasculature in Yorkshire×Landrace Swine by Using Ultrasonography and Angiography. JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE : JAALAS 2020; 59. [PMID: 32532364 PMCID: PMC7338873 DOI: 10.30802/aalas-jaalas-19-000153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/06/2020] [Accepted: 01/31/2020] [Indexed: 06/11/2023]
Abstract
To select animals of appropriate size for preclinical studies of cardiovascular devices, reference knowledge of the cardiovascularanatomy relative to body weight is crucial. We measured the luminal diameters of the arteries (carotid, femoral, and iliac arteries) that are the common access vessels for endovascular and vascular procedures in Yorkshire×Landrace swine. Measurements were performed by using both ultrasound and angiographic methods and were correlated with body weight. Results showed no statistically significant difference between the left and right vessels in the diameters of the carotid,femoral, and iliac arteries. The diameters of the measured arteries showed high correlation with animal weight in pigs thatweighed less than 70 kg.
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Affiliation(s)
| | | | - Christopher J Charles
- Department of Surgery, and
- Cardiovascular Research Institute, Yong Loo Lin School of Medicine, National University of Singapore
| | - Evelyn KF Yim
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | | | - Renee R Li
- Department of Surgery, and
- Cardiovascular Research Institute, Yong Loo Lin School of Medicine, National University of Singapore
| | - Hwa Liang Leo
- Department of Biomedical Engineering, National University of Singapore
| | - Fangsen Cui
- Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR), Singapore; and
| | - Pei Ho
- Department of Surgery, and
- Department of Cardiac, Thoracic, and Vascular Surgery, National University Health System, Singapore
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25
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Reiske L, Schmucker S, Pfaffinger B, Weiler U, Steuber J, Stefanski V. Intravenous Infusion of Cortisol, Adrenaline, or Noradrenaline Alters Porcine Immune Cell Numbers and Promotes Innate over Adaptive Immune Functionality. THE JOURNAL OF IMMUNOLOGY 2020; 204:3205-3216. [DOI: 10.4049/jimmunol.2000269] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 04/17/2020] [Indexed: 12/24/2022]
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26
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Abundes-Velasco A, Jiménez-Rodríguez GM, Arias-Sánchez E, Damas-De Los Santos F, Martínez-Ríos MA, Molina-Méndez FJ, Sánchez-Pérez E, Arai-Ito Marco M, Rodríguez-Barriga E, Sánchez-Jara M, Aceves-Díaz González S, Rodríguez-Parra DA, Aranda-Fraustro A, Romero-Ibarra JL, Peña-Duque MA. Histological and Mechanical Behavior of INC 01 and 02 Bare Metal Stents Against a Commercial Stent: A Preclinical Study in a Porcine Model. Arch Med Res 2020; 51:406-412. [PMID: 32376040 DOI: 10.1016/j.arcmed.2020.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 02/01/2020] [Accepted: 03/17/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND PCI is an expensive procedure in our population and it implies a huge cost for the institutions and National Health Service. AIM OF THE STUDY The main objective was to evaluate the technical and biological success of two stents designed in Mexico. METHODS Ten York pigs, 4-6 months of age, underwent implantation of the bare metal INC-01 (10 stents) and INC-02 (6 stents) coronary stent in addition to a conventional commercial stent (10 stents). Technical success was evaluated immediately with angiography and Intravascular Ultrasound IVUS, continued by a mean follow-up of 4 month and a final angiographic, IVUS and histological evaluation. RESULTS Initial technical success, angiography and IVUS between the three stents were not significant. One stent presented restenosis in follow-up (commercial stent), but all other stents presented excellent clinical outcome, satisfactory angiographic and IVUS results. Inflammation, proliferation and endothelialization between the stents had no major differences in histological analysis in a mean of 4 months follow-up. CONCLUSIONS In this pig model, the INC 01 and INC 02 stents showed the same delivering technical success, angiographic and IVUS features, biological and histological response compared to commercial last generation stents.
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Affiliation(s)
- Arturo Abundes-Velasco
- Subdirección de Proyectos de Innovación y Desarrollo Tecnológico, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | | | - Eduardo Arias-Sánchez
- Departamento de Hemodinámica, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Félix Damas-De Los Santos
- Departamento de Hemodinámica, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | | | - Francisco Javier Molina-Méndez
- Departamento de Anestesiología Cardiovascular, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Efraín Sánchez-Pérez
- Subdirección de Innovación y Desarrollo Tecnológico, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Minoru Arai-Ito Marco
- Subdirección de Innovación y Desarrollo Tecnológico, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Erika Rodríguez-Barriga
- Departamento de Hemodinámica, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Mauricio Sánchez-Jara
- Departamento de Hemodinámica, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Sebastián Aceves-Díaz González
- Subdirección de Innovación y Desarrollo Tecnológico, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - David Alexis Rodríguez-Parra
- Subdirección de Innovación y Desarrollo Tecnológico, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Alberto Aranda-Fraustro
- Departamento de Patología, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - José Luis Romero-Ibarra
- Departamento de Hemodinámica, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México
| | - Marco Antonio Peña-Duque
- Subdirección de Innovación y Desarrollo Tecnológico, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, México.
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27
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Hollowed JJ, Colbert CM, Currier JW, Nguyen KL. Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease. J Vis Exp 2020:10.3791/60729. [PMID: 32150171 PMCID: PMC9588445 DOI: 10.3791/60729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Minimally invasive methods for creating models of focal coronary narrowing in large animals are challenging. Rapid prototyping using three-dimensionally (3D) printed coronary implants can be employed to percutaneously create a focal coronary stenosis. However, reliable delivery of the implants can be difficult without the use of ancillary equipment. We describe the use of a mother-and-child coronary guide catheter for stabilization of the implant and for effective delivery of the 3D printed implant to any desired location along the length of the coronary vessel. The focal coronary narrowing was confirmed under coronary cineangiography and the functional significance of the coronary stenosis was assessed using gadolinium-enhanced first-pass cardiac perfusion MRI. We showed that reliable delivery of 3D printed coronary implants in swine models (n = 11) of ischemic heart disease can be achieved through repurposing mother-and-child coronary guide catheters. Our technique simplifies the percutaneous delivery of coronary implants to create closed-chest swine models of focal coronary artery stenosis and can be performed expeditiously, with a low procedural failure rate.
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Affiliation(s)
- John J Hollowed
- Division of Cardiology, David Geffen School of Medicine, University of California Los Angeles; VA Greater Los Angeles Healthcare System, U.S. Department of Veterans Affairs
| | - Caroline M Colbert
- Physics and Biology in Medicine Graduate Program, University of California Los Angeles; Diagnostic Cardiovascular Imaging Laboratory, Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles
| | - Jesse W Currier
- Division of Cardiology, David Geffen School of Medicine, University of California Los Angeles; VA Greater Los Angeles Healthcare System, U.S. Department of Veterans Affairs
| | - Kim-Lien Nguyen
- Division of Cardiology, David Geffen School of Medicine, University of California Los Angeles; VA Greater Los Angeles Healthcare System, U.S. Department of Veterans Affairs; Physics and Biology in Medicine Graduate Program, University of California Los Angeles; Diagnostic Cardiovascular Imaging Laboratory, Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles;
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28
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Edwards GL, Azain MJ, Parks A. Agricultural Animals as Biomedical Models: Occupational Health and Safety Considerations. ILAR J 2019; 59:161-167. [PMID: 30476116 DOI: 10.1093/ilar/ily013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 08/27/2018] [Indexed: 12/16/2022] Open
Abstract
The use of agricultural animals in biomedical research is increasing. Their overall size and metabolic rate, organ size, longer gestation period, and other physiological similarities make them good candidates for animal models of human disease. There are a number of special considerations for use of traditional farm animals for biomedical research. Differences in physical plant infrastructure, handling equipment, training of personnel, and potential zoonoses are some of the important considerations when traditional farm animals are used in biomedical research. This article provides an overview of some of the special considerations for using traditional agricultural animals in biomedical research. With the growing need for improved translational research, it is reasonable to predict significant growth in these animal models.
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Affiliation(s)
- Gaylen L Edwards
- Department Physiology and Pharmacology, University of Georgia College of Veterinary Medicine, Athens, Georgia
| | - Michael J Azain
- Department of Animal Sciences, University of Georgia College of Agriculture and Environmental Sciences, Athens, Georgia
| | - Andrew Parks
- Department of Large Animal Medicine, University of Georgia College of Veterinary Medicine, Athens, Georgia
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29
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Zhang X, Xue B, Li Y, Wei R, Yu Z, Jin J, Zhang Y, Liu Z. A novel chemically defined serum- and feeder-free medium for undifferentiated growth of porcine pluripotent stem cells. J Cell Physiol 2019; 234:15380-15394. [PMID: 30701540 DOI: 10.1002/jcp.28185] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
Development and improvement of in vitro culture system supporting self-renewal and unlimited proliferation of porcine pluripotent stem cells (pPSCs) is an indispensable process for the naïve pPSCs establishment. In this study, we modified the previous culture system and attempted to develop a novel chemically defined medium (KOFL) for the establishment of pPSCs. It has been cultured >45 passages with flat colony morphology and normal karyotypes in in vitro environment. These cells exhibited alkaline phosphatase activity and expressed pluripotency markers such as OCT4, SOX2, and NANOG, and also possessed differentiation abilities both in vitro and in vivo, proving by the formation of embryonic bodies and teratomas into three germ layers. Then the cells transfected with a green fluorescent protein (GFP) and the GFP positive cells contribute to the porcine preimplantation embryo development. In addition, these cells maintained long duration under feeder-free condition. In conclusion, our results demonstrated that the pPSCs could be derived from preimplantation porcine embryos in serum-free medium and cultured under the feeder-free condition, providing an effective reference for further optimization of the pPSCs culture system.
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Affiliation(s)
- Xue Zhang
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Binghua Xue
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yan Li
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Renyue Wei
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Zhuoran Yu
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Junxue Jin
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yu Zhang
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Zhonghua Liu
- Key Laboratory of Animal Cellular and Genetic Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang, China
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30
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Cong X, Zhang SM, Ellis MW, Luo J. Large Animal Models for the Clinical Application of Human Induced Pluripotent Stem Cells. Stem Cells Dev 2019; 28:1288-1298. [PMID: 31359827 DOI: 10.1089/scd.2019.0136] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Induced pluripotent stem cell (iPSC) technology offers a practically infinite and ethically acceptable source to obtain a variety of somatic cells. Coupled with the biotechnologies of cell therapy or tissue engineering, iPSC technology will enormously contribute to human regenerative medicine. Before clinical application, such human iPSC (hiPSC)-based therapies should be assessed using large animal models that more closely match biological or biomechanical properties of human patients. Therefore, it is critical to generate large animal iPSCs, obtain their iPSC-derived somatic cells, and preclinically evaluate their therapeutic efficacy and safety in large animals. During the past decade, the establishment of iPSC lines of a series of large animal species has been documented, and the acquisition and preclinical evaluation of iPSC-derived somatic cells has also been reported. Despite this progress, significant obstacles, such as obtaining or preserving the bona fide pluripotency of large animal iPSCs, have been encountered. Simultaneously, studies of large animal iPSCs have been overlooked in comparison with those of mouse and hiPSCs, and this field deserves more attention and support due to its important preclinical relevance. Herein, this review will focus on the large animal models of pigs, dogs, horses, and sheep/goats, and summarize current progress, challenges, and potential future directions of research on large animal iPSCs.
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Affiliation(s)
- Xiaoqiang Cong
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale School of Medicine, New Haven, Connecticut.,Department of Cardiology, Bethune First Hospital of Jilin University, Changchun, China
| | - Shang-Min Zhang
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut
| | - Matthew W Ellis
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale School of Medicine, New Haven, Connecticut.,Department of Cellular and Molecular Physiology, Yale University, New Haven, Connecticut
| | - Jiesi Luo
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale Cardiovascular Research Center, Yale School of Medicine, New Haven, Connecticut.,Yale Stem Cell Center, New Haven, Connecticut
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31
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Sorby-Adams AJ, Leonard AV, Elms LE, Marian OC, Hoving JW, Yassi N, Vink R, Thornton E, Turner RJ. Determining the Temporal Profile of Intracranial Pressure Changes Following Transient Stroke in an Ovine Model. Front Neurosci 2019; 13:587. [PMID: 31338013 PMCID: PMC6629870 DOI: 10.3389/fnins.2019.00587] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 05/23/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Cerebral edema and elevated intracranial pressure (ICP) are the leading cause of death in the first week following stroke. Despite this, current treatments are limited and fail to address the underlying mechanisms of swelling, highlighting the need for targeted treatments. When screening promising novel agents, it is essential to use clinically relevant large animal models to increase the likelihood of successful clinical translation. As such, we sought to develop a survival model of transient middle cerebral artery occlusion (tMCAO) in the sheep and subsequently characterize the temporal profile of cerebral edema and elevated ICP following stroke in this novel, clinically relevant model. METHODS Merino-sheep (27M;31F) were anesthetized and subject to 2 h tMCAO with reperfusion or sham surgery. Following surgery, animals were allowed to recover and returned to their home pens. At preselected times points ranging from 1 to 7 days post-stroke, animals were re-anesthetized, ICP measured for 4 h, followed by imaging with MRI to determine cerebral edema, midline shift and infarct volume (FLAIR, T2 and DWI). Animals were subsequently euthanized and their brain removed for immunohistochemical analysis. Serum and cerebrospinal fluid samples were also collected and analyzed for substance P (SP) using ELISA. RESULTS Intracranial pressure and MRI scans were normal in sham animals. Following stroke, ICP rose gradually over time and by 5 days was significantly (p < 0.0001) elevated above sham levels. Profound cerebral edema was observed as early as 2 days post-stroke and continued to evolve out to 6 days, resulting in significant midline shift which was most prominent at 5 days post-stroke (p < 0.01), in keeping with increasing ICP. Serum SP levels were significantly elevated (p < 0.01) by 7 days post-tMCAO. CONCLUSION We have successfully developed a survival model of ovine tMCAO and characterized the temporal profile of ICP. Peak ICP elevation, cerebral edema and midline shift occurred at days 5-6 following stroke, accompanied by an elevation in serum SP. Our findings suggest that novel therapeutic agents screened in this model targeting cerebral edema and elevated ICP would most likely be effective when administered prior to 5 days, or as early as possible following stroke onset.
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Affiliation(s)
- Annabel J. Sorby-Adams
- Adelaide Medical School, Adelaide Centre for Neuroscience Research, The University of Adelaide, Adelaide, SA, Australia
| | - Anna V. Leonard
- Adelaide Medical School, Adelaide Centre for Neuroscience Research, The University of Adelaide, Adelaide, SA, Australia
| | - Levi E. Elms
- Adelaide Medical School, Adelaide Centre for Neuroscience Research, The University of Adelaide, Adelaide, SA, Australia
| | - Oana C. Marian
- Adelaide Medical School, Adelaide Centre for Neuroscience Research, The University of Adelaide, Adelaide, SA, Australia
| | - Jan W. Hoving
- Department of Medicine and Neurology, Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Melbourne, VIC, Australia
- Department of Radiology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Nawaf Yassi
- Department of Medicine and Neurology, Melbourne Brain Centre at the Royal Melbourne Hospital, University of Melbourne, Melbourne, VIC, Australia
- Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Robert Vink
- Division of Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - Emma Thornton
- Adelaide Medical School, Adelaide Centre for Neuroscience Research, The University of Adelaide, Adelaide, SA, Australia
| | - Renée J. Turner
- Adelaide Medical School, Adelaide Centre for Neuroscience Research, The University of Adelaide, Adelaide, SA, Australia
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32
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Frederick NE, Mitchell R, Hein TW, Bagher P. Morphological and pharmacological characterization of the porcine popliteal artery: A novel model for study of lower limb arterial disease. Microcirculation 2019; 26:e12527. [PMID: 30597676 DOI: 10.1111/micc.12527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/06/2018] [Accepted: 12/26/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE This study was undertaken to characterize structural and pharmacological properties of the pig popliteal artery in order to develop a novel system for the examination of lower limb blood flow regulation in a variety of cardiovascular pathologies, such as diabetes-induced peripheral artery disease. METHODS Popliteal arteries were isolated from streptozocin-induced diabetic pigs or age-matched saline-injected control pigs for morphological study using transmission electron microscopy and for examination of vasoreactivity to pharmacological agents using wire myography. RESULTS Transmission electron microscopy of the porcine popliteal artery wall revealed the presence of endothelial cell-smooth muscle cell interactions (myoendothelial junctions) and smooth muscle cell-smooth muscle cell interactions, for which we have coined the term "myo-myo junctions." These myo-myo junctions were shown to feature plaques indicative of connexin expression. Further, the pig popliteal artery was highly responsive to a variety of vasoconstrictors including norepinephrine, phenylephrine, and U46619, and vasodilators including acetylcholine, adenosine 5'-[β-thio] diphosphate, and bradykinin. Finally, 2 weeks after streptozocin-induced diabetes, the normalized vasoconstriction of the pig popliteal artery to norepinephrine was unaltered compared to control. CONCLUSIONS The pig popliteal artery displays structural and pharmacological properties that might prove useful in future studies of diabetes-associated peripheral artery disease and other lower limb cardiovascular diseases.
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Affiliation(s)
- Norman E Frederick
- Department of Medical Physiology, College of Medicine, Texas A&M Health Science Center, Temple, Texas
| | - Ray Mitchell
- Department of Medical Physiology, College of Medicine, Texas A&M Health Science Center, Temple, Texas
| | - Travis W Hein
- Department of Medical Physiology, College of Medicine, Texas A&M Health Science Center, Temple, Texas
| | - Pooneh Bagher
- Department of Medical Physiology, College of Medicine, Texas A&M Health Science Center, Temple, Texas
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Caluori G, Wojtaszczyk A, Yasin O, Pesl M, Wolf J, Belaskova S, Crha M, Sugrue A, Vaidya VR, Naksuk N, DeSimone CV, Killu AM, Padmanabhan D, Asirvatham SJ, Stárek Z. Comparing the incidence of ventricular arrhythmias during epicardial ablation in swine versus canine models. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2019; 42:862-867. [PMID: 30989679 DOI: 10.1111/pace.13698] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/14/2019] [Accepted: 04/11/2019] [Indexed: 01/13/2023]
Abstract
BACKGROUND Choosing the appropriate animal model for development of novel technologies requires an understanding of anatomy and physiology of these different models. There are little data about the characteristics of different animal models for the study of technologies used for epicardial ablation. We aimed to compare the incidence of ventricular arrhythmias during epicardial radiofrequency ablation between swine and canine models using novel epicardial ablation catheters. METHODS We conducted a retrospective study using data obtained from epicardial ablation experiments performed on swine (Sus Scrofa) and canine (Canis familiaris) models. We compared the incidence of ventricular arrhythmias during ablation between swine and canine using multivariate regression analysis. Six swine and six canine animals underwent successful epicardial radiofrequency ablation. A total of 103 ablation applications were recorded. RESULTS Ventricular arrhythmias requiring cardioversion occurred in 13.11% of radiofrequency ablation applications in swine and 9.75% in canine (relative risk: 117.6%, 95% confidence interval [CI]: 83.97-164.69, animal-based odds ratio [OR]: .55, 95% CI: .23-61.33; P = .184). When adjusting for application position, duration of ablation and power, the odds of developing potentially lethal ventricular arrhythmia in swine increased significantly compared to canine (OR: 3.60, 95% CI: 1.35-9.55; P = .010). CONCLUSIONS The swine myocardium is more susceptible to developing ventricular arrhythmias compared to canine model during epicardial ablation. This issue should be carefully considered in future studies.
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Affiliation(s)
- Guido Caluori
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,CEITEC, Masaryk University, Brno, Czech Republic
| | - Adam Wojtaszczyk
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Omar Yasin
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota
| | - Martin Pesl
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,First Department of Internal Medicine/Cardioangiology, St. Anne´s Hospital, Masaryk University, Brno, Czech Republic.,Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Jiří Wolf
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Silvie Belaskova
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Michal Crha
- University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Alan Sugrue
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota
| | - Vaibhav R Vaidya
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota
| | - Niyada Naksuk
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota
| | | | - Ammar M Killu
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota
| | | | - Samuel J Asirvatham
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota.,Department of Pediatrics and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota
| | - Zdeněk Stárek
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,First Department of Internal Medicine/Cardioangiology, St. Anne´s Hospital, Masaryk University, Brno, Czech Republic
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Boettcher AN, Ahrens AP, Charley SE, Tuggle CK. A Comprehensive Protocol for Laparotomy in Swine to Facilitate Ultrasound-Guided Injection into the Fetal Intraperitoneal Space. Comp Med 2019; 69:123-129. [PMID: 30755290 DOI: 10.30802/aalas-cm-18-000098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Swine are a commonly used animal model for biomedical research. One research application of swine models is the in utero injection of human or pig cells into the fetal liver (FL) or intraperitoneal space. In utero injections can be accomplished through laparotomy procedures in pregnant swine. In this study, we aimed to establish comprehensive laparotomy protocols for ultrasound-guided injections into fetuses. Two pregnant gilts, with a total of 16 fetuses, underwent laparotomy at 41 and 42 d of gestation. During surgery, we attempted to inject half of the fetuses in the FL or intraperitoneal space with saline and titanium wire for radiographic imaging after birth. After the laparotomy and fetal injections, both gilts maintained pregnancy throughout gestation and initiated labor at full term. Of the 16 fetuses present at the time of laparotomy, 12 were liveborn, 2 were stillborn, and the remaining 2 were mummies. A total of 7 fetuses from the 2 litters were known to have been injected with a wire during the surgery. After farrowing, piglets were radiographed, and 6 piglets were identified to have wire within the abdominal space. Livers were dissected, and additional radiographs were obtained. It was determined that one piglet had wire within the liver, whereas the other 5 had wire within the intraperitoneal space. Overall, we describe in-depth laparotomy surgery protocols, ultrasound-guided injection of saline and titanium wire into the FL or intraperitoneal space, postoperative monitoring protocols, and information on radiographic detection of titanium wire after piglet birth. These protocols can be followed by other research groups intending to inject cells of interest into either the intraperitoneal space or FL of fetal piglets.
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Affiliation(s)
| | - Amanda P Ahrens
- Laboratory Animal Resources, Iowa State University, Ames, Iowa
| | - Sara E Charley
- Department of Animal Science, Iowa State University, Ames, Iowa
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Alaa M, Tsopanomichalou Gklotsou M, Vu TD, Ti LK, Lee CN, Kofidis T. Comprehensive and Integrative Experimentation Setup for Large Animal Hybrid Valvular Heart Surgery. J Surg Res 2018; 234:249-261. [PMID: 30527481 DOI: 10.1016/j.jss.2018.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 08/24/2018] [Accepted: 09/07/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Experimental surgical procedures for atrioventricular valves present promising translational capabilities, and preclinical studies are necessary to assess their applicability and to train young enthusiastic heart teams. Here, we present a synopsis of experimental surgical procedures on porcine models for mitral valvular (MV) and tricuspid valvular (TV) interventions; mitral valve-in-valve implantation (MViV), transapical cardioscopic (TAC) MV replacement (MVR), TAC-MV annuloplasty, and tricuspid valve-in-a-ring (TViR) procedures. METHODS Twenty-five (n = 25) female Yorkshire pigs of 55-65 kg is the total number used in the four approaches; seven animals underwent MViV, six TAC-MVR, six TAC-MV annuloplasty, and six TViR, respectively. All were subjected to a first conventional valvular surgery (bioprosthetic valve replacement and/or prosthetic ring repair). Then, after 4 wk, a less-invasive second surgery was performed using the transcatheter approaches under investigation. Except for the TAC-MVR and annuloplasty procedures, all animals were followed up for additional 4 wk. RESULTS (1) MViV (n = 7): Standard MVR was successfully performed in all animals. Transvalvular pressure gradients and flow velocities were (Pmax 3.77 ± 0.8 mmHg; Pmean 2.1 ± 0.6 mmHg, Vmax 97 ± 13 cm/s; Vmean 68 ± 21 cm/s). Effective MViV followed (Pmax 16.7 ± 1.8 mmHg; Pmean 6.2 ± 1.2 mmHg, Vmax 216 ± 32 cm/s; Vmean 110 ± 24 cm/s). (2) TAC-MVR (n = 6): The overall bypass time was 177.2 ± 44.2 min. Transprosthetic Pmean was 4.6 ± 2.4 mmHg; no paravalvular leaks in all animals. (3) TAC-MV annuloplasty (n = 6): The implantation time was 47 ± 6 min. MV was competent, left ventricular ejection fraction (LV-EF%) was 63 ± 4%. (4) TViR (n = 6): Conventional TV ring repair was performed in all animals (Pmax 2.42 ± 0.7 mmHg; Pmean 1.3 ± 0.6 mmHg, Vmax 82 ± 10.4 cm/s; Vmean 65.4 ± 21 cm/s). All TViRs were implanted efficiently (Pmax 4.7 ± 1.6 mmHg; Pmean 2.7 ± 0.8 mmHg, Vmax 105 ± 31 cm/s; Vmean 81 ± 16 cm/s). A mild paravalvular leak was observed in one animal (16%). CONCLUSIONS All studied experimental valvular interventions are feasible, within the context of well-trained cardiac surgery specialists, and all possibilities should be considered when treating a patient to determine which one suits best his individual challenges and scope.
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Affiliation(s)
- Mohamed Alaa
- Department of Cardiac, Thoracic and Vascular Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
| | - Maria Tsopanomichalou Gklotsou
- Department of Cardiac, Thoracic and Vascular Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Thang Duc Vu
- Department of Cardiac, Thoracic and Vascular Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Lian Kah Ti
- Department of Anesthesia, National University of Singapore, Singapore
| | - Chuen Neng Lee
- Department of Cardiac, Thoracic and Vascular Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Hospital, National University Health System, Singapore
| | - Theo Kofidis
- Department of Cardiac, Thoracic and Vascular Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Hospital, National University Health System, Singapore
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Legesse B, Kaur A, Kenchegowda D, Hritzo B, Culp WE, Moroni M. Neulasta Regimen for the Hematopoietic Acute Radiation Syndrome: Effects Beyond Neutrophil Recovery. Int J Radiat Oncol Biol Phys 2018; 103:935-944. [PMID: 30496878 DOI: 10.1016/j.ijrobp.2018.11.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/19/2018] [Accepted: 11/19/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE Understanding the physiopathology underlying the acute radiation syndrome (ARS) and the mechanism of action of drugs known to ameliorate ARS is expected to help identify novel countermeasure candidates and improve the outcome for victims exposed to radiation. Granulocyte colony-stimulating factor (G-CSF) has been approved by the US Food and Drug Administration for treatment of hematopoietic ARS (H-ARS) because of its ability to alleviate myelosuppression. Besides its role in hematopoiesis, G-CSF is known to protect the cardiovascular and neurologic systems, to attenuate vascular injury and cardiac toxicity, to preserve gap junction function, and to modulate inflammation and oxidative stress. Here, we characterized the protective effects of G-CSF beyond neutrophil recovery in minipigs exposed to H-ARS doses. METHODS AND MATERIALS Twenty male Göttingen minipigs were exposed to total body, acute ionizing radiation. Animals received either pegylated G-CSF (Neulasta) or dextrose at days 1 and 8 after irradiation. Survival was monitored over a 45-day period. RESULTS Neulasta decreased mortality compared with the control, reduced nadir and duration of neutropenia, and lowered prevalence of organ hemorrhage and frank bleeding episodes. Neulasta also increased plasma concentration of IGF-1 hormone, activated the cardiovascular protective IGF-1R/PI3K/Akt/eNOS/NO pathway, and enhanced membrane expression of VE-cadherin in the heart, improving vascular tone and barrier function. Expression of the acute phase protein CRP, a mediator of cardiovascular diseases and a negative regulator of the IGF-1 pathway, was also induced but at much lower extent compared with IGF-1. Activity of catalase and superoxide dismutase (SOD-1) was only marginally affected, whereas activation of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase was downregulated. CONCLUSIONS In addition to a neutrophilic effect, amelioration of endothelial homeostasis and barrier function and reduction in NADPH oxidase contribute to the beneficial effects of Neulasta for the treatment of H-ARS.
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Affiliation(s)
- Betre Legesse
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Amandeep Kaur
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Doreswamy Kenchegowda
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - Bernadette Hritzo
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland
| | - William E Culp
- Biomedical Instrumentation Center, Uniformed Services University of the Health Sciences, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Maria Moroni
- Scientific Research Department, Armed Forces Radiobiology Research Institute, Bethesda, Maryland.
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A Thin Layer of Decellularized Porcine Myocardium for Cell Delivery. Sci Rep 2018; 8:16206. [PMID: 30385769 PMCID: PMC6212498 DOI: 10.1038/s41598-018-33946-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 10/08/2018] [Indexed: 01/11/2023] Open
Abstract
Decellularized porcine myocardium has shown many benefits as a cell delivery scaffold for cardiac therapy. However, using full thickness decellularized myocardium as cardiac patch may lead to poor viability and inhomogeneous distribution of delivered cells, due to perfusion limitations. In this study, we explored the feasibility of decellularized porcine myocardial slice (dPMS) to construct a vascularized cardiac patch for cell delivery. Decellularized porcine myocardium was sliced into thin layers (thickness~300 µm). Adipose-derived Stem cells (ASCs) obtained from rat and pig were seeded on dPMS. The viability, infiltration, and differentiation of seeded ASCs were examined. The mechanical properties of dPMSs of various thickness and native myocardium were tested. We noticed dPMS supported attachment and growth of rat and pig ASCs. Both rat and pig ASCs showed high viability, similar patterns of proliferation and infiltration within dPMS. Rat ASCs showed expression of early-endothelial markers followed by mature-endothelial marker without any additional inducers on dPMS. Using rat myocardial infarction model, we delivered ASCs using dPMS patched to the infarcted myocardium. After 1 week, a higher number of transplanted cells were present in the infarcted area when cells were delivered using dPMS versus direct injection. Compared with MI group, increased vascular formation was also observed.
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38
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Effect of A Polyphenol-Rich Canarium album Extract on the Composition of the Gut Microbiota of Mice Fed a High-Fat Diet. Molecules 2018; 23:molecules23092188. [PMID: 30200213 PMCID: PMC6225199 DOI: 10.3390/molecules23092188] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 08/23/2018] [Accepted: 08/28/2018] [Indexed: 01/12/2023] Open
Abstract
This study investigated the influence of Canarium album extract (CAext) on intestinal microbiota composition of mice fed a high-fat diet (HFD). Kun Ming (KM) mice were fed either a normal chow diet or a HFD for six weeks. At the seventh week, HFD-fed mice were gavaged daily with saline, or a different dose of CAext for four weeks, respectively. Then, the composition of the gut microbiota was analyzed by high-throughput sequencing technology. Analysis of fecal microbial populations, grouped by phyla, showed significant increases of Firmicutes and Verrucomicrobia, but a decrease of Bacteroidetes in all CAext-fed mice. Particularly, CAext gavage in a low dose or a medium dose caused a significant increase in the proportion of Akkermansia. These findings suggested that CAext can alter the gut microbiota composition of HFD-fed mice, and had a potential prebiotic effects on Akkermansia.
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Killu AM, Naksuk N, Syed FF, DeSimone CV, Gaba P, Witt C, Ladewig DJ, Suddendorf SH, Powers JM, Satam G, Stárek Z, Kara T, Wolf J, Leinveber P, Crha M, Novák M, Bruce CJ, Friedman PA, Asirvatham SJ. Feasibility of directional percutaneous epicardial ablation with a partially insulated catheter. J Interv Card Electrophysiol 2018; 53:105-113. [PMID: 30008046 DOI: 10.1007/s10840-018-0404-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 06/20/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE To demonstrate the feasibility of directional percutaneous epicardial ablation using a partially insulated catheter. METHODS Partially insulated catheter prototypes were tested in 12 (6 canine, 6 porcine) animal studies in two centers. Prototypes had interspersed windows to enable visualization of epicardial structures with ultrasound. Epicardial unipolar ablation and ablation between two electrodes was performed according to protocol (5-60 W power, 0-60 mls/min irrigation, 78 s mean duration). RESULTS Of 96 epicardial ablation attempts, unipolar ablation was delivered in 53.1%. Electrogram evidence of ablation, when analyzable, occurred in 75 of 79 (94.9%) therapies. Paired pre/post-ablation pacing threshold (N = 74) showed significant increase in pacing threshold post-ablation (0.9 to 2.6 mA, P < .0001). Arrhythmias occurred in 18 (18.8%) therapies (11 ventricular fibrillation, 7 ventricular tachycardia), mainly in pigs (72.2%). Coronary artery visualization was variably successful. No phrenic nerve injury was noted during or after ablation. Furthermore, there were minimal pericardial changes with ablation. CONCLUSIONS Epicardial ablation using a partially insulated catheter to confer epicardial directionality and protect the phrenic nerve seems feasible. Iterations with ultrasound windows may enable real-time epicardial surface visualization thus identifying coronary arteries at ablation sites. Further improvements, however, are necessary.
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Affiliation(s)
- Ammar M Killu
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - Niyada Naksuk
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - Faisal F Syed
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | | | | | - Chance Witt
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | | | | | | | - Gaurav Satam
- Mayo Clinic Ventures, Mayo Clinic, Rochester, MN, USA
| | - Zdeněk Stárek
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Tomas Kara
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Jiří Wolf
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Pavel Leinveber
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Michal Crha
- Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Miroslav Novák
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Charles J Bruce
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - Paul A Friedman
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - Samuel J Asirvatham
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA. .,Department of Pediatrics and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA.
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40
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Dick GM, Namani R, Patel B, Kassab GS. Role of Coronary Myogenic Response in Pressure-Flow Autoregulation in Swine: A Meta-Analysis With Coronary Flow Modeling. Front Physiol 2018; 9:580. [PMID: 29875686 PMCID: PMC5974144 DOI: 10.3389/fphys.2018.00580] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/01/2018] [Indexed: 11/23/2022] Open
Abstract
Myogenic responses (pressure-dependent contractions) of coronary arterioles play a role in autoregulation (relatively constant flow vs. pressure). Publications on myogenic reactivity in swine coronaries vary in caliber, analysis, and degree of responsiveness. Further, data on myogenic responses and autoregulation in swine have not been completely compiled, compared, and modeled. Thus, it has been difficult to understand these physiological phenomena. Our purpose was to: (a) analyze myogenic data with standard criteria; (b) assign results to diameter categories defined by morphometry; and (c) use our novel multiscale flow model to determine the extent to which ex vivo myogenic reactivity can explain autoregulation in vivo. When myogenic responses from the literature are an input for our model, the predicted coronary autoregulation approaches in vivo observations. More complete and appropriate data are now available to investigate the regulation of coronary blood flow in swine, a highly relevant model for human physiology and disease.
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Affiliation(s)
- Gregory M Dick
- California Medical Innovations Institute, San Diego, CA, United States
| | - Ravi Namani
- California Medical Innovations Institute, San Diego, CA, United States
| | - Bhavesh Patel
- California Medical Innovations Institute, San Diego, CA, United States
| | - Ghassan S Kassab
- California Medical Innovations Institute, San Diego, CA, United States
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Iacobazzi D, Swim MM, Albertario A, Caputo M, Ghorbel MT. Thymus-Derived Mesenchymal Stem Cells for Tissue Engineering Clinical-Grade Cardiovascular Grafts. Tissue Eng Part A 2018; 24:794-808. [DOI: 10.1089/ten.tea.2017.0290] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Dominga Iacobazzi
- Bristol Medical School, Bristol Heart Institute, University of Bristol, Bristol, United Kingdom
| | - Megan M. Swim
- Bristol Medical School, Bristol Heart Institute, University of Bristol, Bristol, United Kingdom
| | - Ambra Albertario
- Bristol Medical School, Bristol Heart Institute, University of Bristol, Bristol, United Kingdom
| | - Massimo Caputo
- Bristol Medical School, Bristol Heart Institute, University of Bristol, Bristol, United Kingdom
| | - Mohamed T. Ghorbel
- Bristol Medical School, Bristol Heart Institute, University of Bristol, Bristol, United Kingdom
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42
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Luo J, Qin L, Kural MH, Schwan J, Li X, Bartulos O, Cong XQ, Ren Y, Gui L, Li G, Ellis MW, Li P, Kotton DN, Dardik A, Pober JS, Tellides G, Rolle M, Campbell S, Hawley RJ, Sachs DH, Niklason LE, Qyang Y. Vascular smooth muscle cells derived from inbred swine induced pluripotent stem cells for vascular tissue engineering. Biomaterials 2017; 147:116-132. [PMID: 28942128 PMCID: PMC5638652 DOI: 10.1016/j.biomaterials.2017.09.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 09/05/2017] [Accepted: 09/17/2017] [Indexed: 12/18/2022]
Abstract
Development of autologous tissue-engineered vascular constructs using vascular smooth muscle cells (VSMCs) derived from human induced pluripotent stem cells (iPSCs) holds great potential in treating patients with vascular disease. However, preclinical, large animal iPSC-based cellular and tissue models are required to evaluate safety and efficacy prior to clinical application. Herein, swine iPSC (siPSC) lines were established by introducing doxycycline-inducible reprogramming factors into fetal fibroblasts from a line of inbred Massachusetts General Hospital miniature swine that accept tissue and organ transplants without immunosuppression within the line. Highly enriched, functional VSMCs were derived from siPSCs based on addition of ascorbic acid and inactivation of reprogramming factor via doxycycline withdrawal. Moreover, siPSC-VSMCs seeded onto biodegradable polyglycolic acid (PGA) scaffolds readily formed vascular tissues, which were implanted subcutaneously into immunodeficient mice and showed further maturation revealed by expression of the mature VSMC marker, smooth muscle myosin heavy chain. Finally, using a robust cellular self-assembly approach, we developed 3D scaffold-free tissue rings from siPSC-VSMCs that showed comparable mechanical properties and contractile function to those developed from swine primary VSMCs. These engineered vascular constructs, prepared from doxycycline-inducible inbred siPSCs, offer new opportunities for preclinical investigation of autologous human iPSC-based vascular tissues for patient treatment.
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Affiliation(s)
- Jiesi Luo
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06511, USA; Yale Stem Cell Center, New Haven, CT 06520, USA
| | - Lingfeng Qin
- Department of Surgery, Yale University, New Haven, CT 06520, USA
| | - Mehmet H Kural
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Anesthesiology, Yale University, New Haven, CT 06519, USA
| | - Jonas Schwan
- Department of Biomedical Engineering, Yale University, New Haven, CT 06519, USA
| | - Xia Li
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06511, USA; Yale Stem Cell Center, New Haven, CT 06520, USA
| | - Oscar Bartulos
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06511, USA; Yale Stem Cell Center, New Haven, CT 06520, USA
| | - Xiao-Qiang Cong
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06511, USA; Yale Stem Cell Center, New Haven, CT 06520, USA; Department of Cardiology, Bethune First Hospital of Jilin University, ChangChun, 130021, China
| | - Yongming Ren
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06511, USA; Yale Stem Cell Center, New Haven, CT 06520, USA
| | - Liqiong Gui
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Anesthesiology, Yale University, New Haven, CT 06519, USA
| | - Guangxin Li
- Department of Surgery, Yale University, New Haven, CT 06520, USA; Department of Vascular Surgery, The First Hospital of China Medical University, Shenyang, 110122, China
| | - Matthew W Ellis
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06511, USA; Department of Cellular and Molecular Physiology, Yale University, New Haven, CT 06519, USA
| | - Peining Li
- Department of Genetics, Yale University, New Haven, CT 06519, USA
| | - Darrell N Kotton
- Center for Regenerative Medicine, Boston University and Boston Medical Center, Boston, MA 02118, USA
| | - Alan Dardik
- Department of Surgery, Yale University, New Haven, CT 06520, USA; Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Jordan S Pober
- Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Immunobiology, Yale University, New Haven, CT 06520, USA; Department of Pathology, Yale School of Medicine, New Haven, CT 06520, USA
| | - George Tellides
- Department of Surgery, Yale University, New Haven, CT 06520, USA; Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Marsha Rolle
- Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, MA 01605, USA
| | - Stuart Campbell
- Department of Biomedical Engineering, Yale University, New Haven, CT 06519, USA
| | - Robert J Hawley
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA 02129, USA
| | - David H Sachs
- Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA 02129, USA
| | - Laura E Niklason
- Yale Stem Cell Center, New Haven, CT 06520, USA; Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Anesthesiology, Yale University, New Haven, CT 06519, USA; Department of Biomedical Engineering, Yale University, New Haven, CT 06519, USA
| | - Yibing Qyang
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine Yale School of Medicine, New Haven, CT 06511, USA; Yale Stem Cell Center, New Haven, CT 06520, USA; Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Pathology, Yale School of Medicine, New Haven, CT 06520, USA.
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Mitsutake Y, Reifart J, Pyun WB, Lyons JK, Deuse T, Schrepfer S, Ikeno F. Differences in Vascular Response between Balloon Overstretch and Stent Overexpansion in Nonatherosclerotic Porcine Coronary Arteries. Comp Med 2017; 67:350-355. [PMID: 28830582 PMCID: PMC5557207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/30/2017] [Accepted: 02/17/2017] [Indexed: 06/07/2023]
Abstract
Which preclinical models are best suited for restenosis research remains uncertain. Here we compared the restenotic responses after balloon or stent overstretch injury in a porcine coronary artery. A total of 30 coronary lesions in 5 pigs were treated by balloon overdilatation or oversized stent implantation at various balloon-to-artery (B:A) ratios. Four weeks later, the lesions were examined in vivo by using coronary angiography, intravascular ultrasound, and optical coherence tomography (OCT). At follow-up, the lumen area stenosis and plaque burden at the minimal lumen area site were greater in stented sites than in balloon injury site (lumen area stenosis, 21.7 ± 8.9% compared with 32.8 ± 12.1%; plaque burden, 30.1% ± 10.1% compared with 44.7% ± 10.1%, respectively). The remodeling index was significantly smaller for the balloon-injury group than the stent group (0.86 ± 0.11 compared with 1.00 ±0.04). Only the stent group that was dilated at a high B:A ratio resulted in increased plaque burden. In the balloon-injury sites, high B:A ratios were significantly associated with greater negative remodeling. Tissue morphology assessment by OCT revealed that the predominant pattern in balloon injury sites was homogeneous, whereas that in stented sites was a layered to heterogeneous pattern. Neointimal proliferation was significantly greater after oversized stenting than after balloon overstretch injury. Together these findings suggest that stent overexpansion of porcine coronary arteries might be appropriate for researching restenosis than is the balloon overstretch injury model.
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Affiliation(s)
- Yoshiaki Mitsutake
- Division of Cardiovascular Medicine, Stanford University, Stanford, California, USA
| | - Jörg Reifart
- Division of Cardiovascular Medicine, Stanford University, Stanford, California, USA
| | - Wook Bum Pyun
- Department of Internal Medicine, Ewha Woman's University School of Medicine, Seoul, Korea
| | - Jennifer K Lyons
- Division of Cardiovascular Medicine, Stanford University, Stanford, California, USA
| | - Tobias Deuse
- Department of Cardiovascular Surgery, University Heart Center-Hamburg, Hamburg, Germany
| | - Sonja Schrepfer
- Department of Cardiovascular Surgery, University Heart Center-Hamburg, Hamburg, Germany
| | - Fumiaki Ikeno
- Division of Cardiovascular Medicine, Stanford University, Stanford, California, USA.
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Anderson JH, Taggart NW, Edgerton SL, Cantero Peral S, Holst KA, Cetta F. Ultrasound guided percutaneous common carotid artery access in piglets for intracoronary stem cell infusion. Lab Anim 2017; 52:88-92. [PMID: 28708034 DOI: 10.1177/0023677217719923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In pigs, the deep location of the common carotid artery and overlying sternomastoideus muscle in the neck has led to the recommendation for a surgical cutdown for common carotid access, as opposed to minimally invasive techniques for vascular access. We sought to determine if direct percutaneous common carotid artery access in piglets is attainable. Seventeen piglets were anesthetized and intubated. Under two-dimensional and color flow Doppler ultrasound guidance, a 21 gauge needle was utilized to access the right common carotid artery. Following arterial puncture, the Seldinger technique was applied to place a 4 or 5 French introducer. Upon completion of cardiac catheterization with intracoronary stem cell infusion the introducer was removed and manual pressure was applied to prevent hematoma development. Successful access with an introducer was achieved in all 17 piglets. The average weight was 8.5 ± 1.7 kg. One piglet developed a hematoma with hemorrhaging from the catheterization site and was euthanized. This piglet was given bivalirudin for the procedure. After this incident, subsequent piglets were not given anticoagulation and no other complications occurred. Ultrasound guided percutaneous common carotid artery access in piglets is attainable in a safe, reliable, and reproducible manner when performed by microvascular experts.
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Affiliation(s)
- Jason H Anderson
- 1 Division of Pediatric Cardiology, Mayo Clinic, Rochester, MN, USA
| | | | - Sarah L Edgerton
- 3 Wanek Program for Hypoplastic Left Heart Syndrome, Mayo Clinic, Rochester, MN, USA
| | | | - Kimberly A Holst
- 5 Department of Cardiothoracic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Frank Cetta
- 1 Division of Pediatric Cardiology, Mayo Clinic, Rochester, MN, USA.,2 Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
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45
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Preclinical models in the study of sex differences. Clin Sci (Lond) 2017; 131:449-469. [PMID: 28265036 DOI: 10.1042/cs20160847] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 12/13/2016] [Accepted: 01/03/2017] [Indexed: 02/06/2023]
Abstract
The biology of sex differences deals with the study of the disparities between females and males and the related biological mechanisms. Gender medicine focuses on the impact of gender and sex on human physiology, pathophysiology and clinical features of diseases that are common to women and men. The term gender refers to a complex interrelation and integration of sex-as a biological and functional determinant-and psychological and cultural behaviours (due to ethnical, social or religious background). The attention to the impact of gender differences on the pathophysiology and, therefore, on the clinical management of the most common diseases, such as cardiovascular diseases (CVD), neurodegenerative disorders, immune and autoimmune diseases as well as several tumours, is in fact often neglected. Hence, studies covering different fields of investigation and including sex differences in the pathogenesis, in diagnostic and prognostic criteria as well as in response to therapy appear mandatory. However, prerequisites for this development are preclinical studies, including in vitro and in vivo approaches. They represent the first step in the development of a drug or in the comprehension of the pathogenetic mechanisms of diseases, in turn a necessary step for the development of new or more appropriate therapeutic strategies. However, sex differences are still poorly considered and the great majority of preclinical studies do not take into account the relevance of such disparities. In this review, we describe the state of the art of these studies and provide some paradigmatic examples of key fields of investigation, such as oncology, neurology and CVD, where preclinical models should be improved.
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46
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Analysis of region specific gene expression patterns in the heart and systemic responses after experimental myocardial ischemia. Oncotarget 2017; 8:60809-60825. [PMID: 28977827 PMCID: PMC5617387 DOI: 10.18632/oncotarget.17955] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 05/03/2017] [Indexed: 12/21/2022] Open
Abstract
Aims Ischemic myocardial injury leads to the activation of inflammatory mechanisms and results in ventricular remodeling. Although great efforts have been made to unravel the molecular and cellular processes taking place in the ischemic myocardium, little is known about the effects on the surrounding tissue and other organs. The aim of this study was to determine region specific differences in the myocardium and in distant organs after experimental myocardial infarction by using a bioinformatics approach. Methods and Results A porcine closed chest reperfused acute myocardial infarction model and mRNA microarrays have been used to evaluate gene expression changes. Myocardial infarction changed the expression of 8903 genes in myocardial-, 856 in hepatic- and 338 in splenic tissue. Identification of myocardial region specific differences as well as expression profiling of distant organs revealed clear gene-regulation patterns within the first 24 hours after ischemia. Transcription factor binding site analysis suggested a strong role for Kruppel like factor 4 (Klf4) in the regulation of gene expression following myocardial infarction, and was therefore investigated further by immunohistochemistry. Strong nuclear Klf4 expression with clear region specific differences was detectable in porcine and human heart samples after myocardial infarction. Conclusion Apart from presenting a post myocardial infarction gene expression database and specific response pathways, the key message of this work is that myocardial ischemia does not end at the injured myocardium. The present results have enlarged the spectrum of organs affected, and suggest that a variety of organ systems are involved in the co-ordination of the organism´s response to myocardial infarction.
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Webb RL, Gallegos-Cárdenas A, Miller CN, Solomotis NJ, Liu HX, West FD, Stice SL. Pig Induced Pluripotent Stem Cell-Derived Neural Rosettes Parallel Human Differentiation Into Sensory Neural Subtypes. Cell Reprogram 2017; 19:88-94. [PMID: 28266869 DOI: 10.1089/cell.2016.0057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The pig is the large animal model of choice for study of nerve regeneration and wound repair. Availability of porcine sensory neural cells would conceptually allow for analogous cell-based peripheral nerve regeneration in porcine injuries of similar severity and size to those found in humans. After recently reporting that porcine (or pig) induced pluripotent stem cells (piPSCs) differentiate into neural rosette (NR) structures similar to human NRs, here we demonstrate that pig NR cells could differentiate into neural crest cells and other peripheral nervous system-relevant cell types. Treatment with either bone morphogenetic protein 4 or fetal bovine serum led to differentiation into BRN3A-positive sensory cells and increased expression of sensory neuron TRK receptor gene family: TRKA, TRKB, and TRKC. Porcine sensory neural cells would allow determination of parallels between human and porcine cells in response to noxious stimuli, analgesics, and reparative mechanisms. In vitro differentiation of pig sensory neurons provides a novel model system for neural cell subtype specification and would provide a novel platform for the study of regenerative therapeutics by elucidating the requirements for innervation following injury and axonal survival.
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Affiliation(s)
- Robin L Webb
- 1 Regenerative Bioscience Center, University of Georgia , Rhodes Center for Animal and Dairy Science, Athens, Georgia .,2 Department of Animal and Dairy Science, Rhodes Center for Animal and Dairy Science, College of Agricultural and Environmental Sciences, University of Georgia , Athens, Georgia
| | - Amalia Gallegos-Cárdenas
- 1 Regenerative Bioscience Center, University of Georgia , Rhodes Center for Animal and Dairy Science, Athens, Georgia .,2 Department of Animal and Dairy Science, Rhodes Center for Animal and Dairy Science, College of Agricultural and Environmental Sciences, University of Georgia , Athens, Georgia
| | - Colette N Miller
- 2 Department of Animal and Dairy Science, Rhodes Center for Animal and Dairy Science, College of Agricultural and Environmental Sciences, University of Georgia , Athens, Georgia
| | - Nicholas J Solomotis
- 1 Regenerative Bioscience Center, University of Georgia , Rhodes Center for Animal and Dairy Science, Athens, Georgia .,2 Department of Animal and Dairy Science, Rhodes Center for Animal and Dairy Science, College of Agricultural and Environmental Sciences, University of Georgia , Athens, Georgia
| | - Hong-Xiang Liu
- 1 Regenerative Bioscience Center, University of Georgia , Rhodes Center for Animal and Dairy Science, Athens, Georgia .,2 Department of Animal and Dairy Science, Rhodes Center for Animal and Dairy Science, College of Agricultural and Environmental Sciences, University of Georgia , Athens, Georgia
| | - Franklin D West
- 1 Regenerative Bioscience Center, University of Georgia , Rhodes Center for Animal and Dairy Science, Athens, Georgia .,2 Department of Animal and Dairy Science, Rhodes Center for Animal and Dairy Science, College of Agricultural and Environmental Sciences, University of Georgia , Athens, Georgia
| | - Steven L Stice
- 1 Regenerative Bioscience Center, University of Georgia , Rhodes Center for Animal and Dairy Science, Athens, Georgia .,2 Department of Animal and Dairy Science, Rhodes Center for Animal and Dairy Science, College of Agricultural and Environmental Sciences, University of Georgia , Athens, Georgia
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Ichimura K, Matoba T, Nakano K, Tokutome M, Honda K, Koga JI, Egashira K. A Translational Study of a New Therapeutic Approach for Acute Myocardial Infarction: Nanoparticle-Mediated Delivery of Pitavastatin into Reperfused Myocardium Reduces Ischemia-Reperfusion Injury in a Preclinical Porcine Model. PLoS One 2016; 11:e0162425. [PMID: 27603665 PMCID: PMC5014419 DOI: 10.1371/journal.pone.0162425] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 08/19/2016] [Indexed: 01/14/2023] Open
Abstract
Background There is an unmet need to develop an innovative cardioprotective modality for acute myocardial infarction, for which interventional reperfusion therapy is hampered by ischemia-reperfusion (IR) injury. We recently reported that bioabsorbable poly(lactic acid/glycolic acid) (PLGA) nanoparticle-mediated treatment with pitavastatin (pitavastatin-NP) exerts a cardioprotective effect in a rat IR injury model by activating the PI3K-Akt pathway and inhibiting inflammation. To obtain preclinical proof-of-concept evidence, in this study, we examined the effect of pitavastatin-NP on myocardial IR injury in conscious and anesthetized pig models. Methods and Results Eighty-four Bama mini-pigs were surgically implanted with a pneumatic cuff occluder at the left circumflex coronary artery (LCx) and telemetry transmitters to continuously monitor electrocardiogram as well as to monitor arterial blood pressure and heart rate. The LCx was occluded for 60 minutes, followed by 24 hours of reperfusion under conscious conditions. Intravenous administration of pitavastatin-NP containing ≥ 8 mg/body of pitavastatin 5 minutes before reperfusion significantly reduced infarct size; by contrast, pitavastatin alone (8 mg/body) showed no therapeutic effects. Pitavastatin-NP produced anti-apoptotic effects on cultured cardiomyocytes in vitro. Cardiac magnetic resonance imaging performed 4 weeks after IR injury revealed that pitavastatin-NP reduced the extent of left ventricle remodeling. Importantly, pitavastatin-NP exerted no significant effects on blood pressure, heart rate, or serum biochemistry. Exploratory examinations in anesthetized pigs showed pharmacokinetic analysis and the effects of pitavastatin-NP on no-reflow phenomenon. Conclusions NP-mediated delivery of pitavastatin to IR-injured myocardium exerts cardioprotective effects on IR injury without apparent adverse side effects in a preclinical conscious pig model. Thus, pitavastatin-NP represents a novel therapeutic modality for IR injury in acute myocardial infarction.
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Affiliation(s)
- Kenzo Ichimura
- Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Tetsuya Matoba
- Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Kaku Nakano
- Department of Cardiovascular Research, Development, and Translational Medicine, Center for Cardiovascular Disruptive Innovation, Kyushu University, Fukuoka, Japan
| | - Masaki Tokutome
- Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Katsuya Honda
- Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Jun-ichiro Koga
- Department of Cardiovascular Research, Development, and Translational Medicine, Center for Cardiovascular Disruptive Innovation, Kyushu University, Fukuoka, Japan
| | - Kensuke Egashira
- Department of Cardiovascular Research, Development, and Translational Medicine, Center for Cardiovascular Disruptive Innovation, Kyushu University, Fukuoka, Japan
- * E-mail:
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Tao B, Gao H, Zheng M, Luo Z, Liu L, Bai W, Wang J, Liu D, Ma S, Luo Z, Gao L, Wang Y, Cao F. Preclinical modeling and multimodality imaging of chronic myocardial infarction in minipigs induced by novel interventional embolization technique. EJNMMI Res 2016; 6:59. [PMID: 27393423 PMCID: PMC4938836 DOI: 10.1186/s13550-016-0214-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 06/29/2016] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND This study was designed to establish a chronic myocardial infarction (MI) model in minipigs with a novel coronary sequential balloons-sponge embolism technique. METHODS Eighteen healthy minipigs (25-30 kg) were randomly divided into three groups for left anterior descending artery (LAD) occlusion: conventional balloon occlusion group (BO group, temporary balloon occlusion for 60 mins), half-balloon embolism group (HB group), and sequential balloon-balloon-sponge embolism group (BBS group, two half-balloons with one sponge as the embolism clot). The incidence of ventricular fibrillation (VF), total mortality, operating time, and vascular recanalization 3 months post-MI was recorded and compared. Echocardiography, multimodality nuclear medical imaging, and histology staining were applied for the evaluation of infarction. RESULTS Thirteen out of 18 minipigs survived after the operation, while 5 animals died with VF (3 in the BO group, 1 in the HB group, and 1 in the BBS group), with an 83.3 % (5/6 minipigs) acute procedural survival rate in embolism groups. The operating duration was 60.0 ± 0.5 mins, 21.4 ± 5.2 mins, and 31.2 ± 4.7 mins in the three groups, respectively. LAD recanalization was found in three animals of the HB group but none in the BBS group by angiography follow-up. The infarct sizes were more stable and larger in the HB group and BBS group than that in the BO group (P < 0.05, n = 13). CONCLUSIONS The method of sequential balloons-sponge embolization could induce myocardial infarction with consistent and sustained embolization and gain higher operation success rate and better repeatability in minipigs, which holds a promising method for preclinical MI study.
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Affiliation(s)
- Bo Tao
- Department of Cardiology, Chinese PLA General Hospital, Fuxing Street 28#, Haidian District, Beijing, 100853, China.,Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Haokao Gao
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Minwen Zheng
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhonghua Luo
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Liwen Liu
- Department of Ultrasonography, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Wei Bai
- Department of Ultrasonography, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Jing Wang
- Department of Nuclear Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Daliang Liu
- Department of Nuclear Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Sai Ma
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhenli Luo
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Lei Gao
- Department of Cardiology, Chinese PLA General Hospital, Fuxing Street 28#, Haidian District, Beijing, 100853, China
| | - Yabin Wang
- Department of Cardiology, Chinese PLA General Hospital, Fuxing Street 28#, Haidian District, Beijing, 100853, China
| | - Feng Cao
- Department of Cardiology, Chinese PLA General Hospital, Fuxing Street 28#, Haidian District, Beijing, 100853, China.
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50
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Bernardini C, Zannoni A, Bertocchi M, Bianchi F, Salaroli R, Botelho G, Bacci ML, Ventrella V, Forni M. Deleterious effects of tributyltin on porcine vascular stem cells physiology. Comp Biochem Physiol C Toxicol Pharmacol 2016; 185-186:38-44. [PMID: 26965667 DOI: 10.1016/j.cbpc.2016.03.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/26/2016] [Accepted: 03/01/2016] [Indexed: 12/27/2022]
Abstract
The vascular functional and structural integrity is essential for the maintenance of the whole organism and it has been demonstrated that different types of vascular progenitor cells resident in the vessel wall play an important role in this process. The purpose of the present research was to observe the effect of tributyltin (TBT), a risk factor for vascular disorders, on porcine Aortic Vascular Precursor Cells (pAVPCs) in term of cytotoxicity, gene expression profile, functionality and differentiation potential. We have demonstrated that pAVPCs morphology deeply changed following TBT treatment. After 48h a cytotoxic effect has been detected and Annexin binding assay demonstrated that TBT induced apoptosis. The transcriptional profile of characteristic pericyte markers has been altered: TBT 10nM substantially induced alpha-SMA, while, TBT 500nM determined a significant reduction of all pericyte markers. IL-6 protein detected in the medium of pAVPCs treated with TBT at both doses studied and with a dose response. TBT has interfered with normal pAVPC functionality preventing their ability to support a capillary-like network. In addition TBT has determined an increase of pAVPC adipogenic differentiation. In conclusion in the present paper we have demonstrated that TBT alters the vascular stem cells in terms of structure, functionality and differentiating capability, therefore effects of TBT in blood should be deeply explored to understand the potential vascular risk associated with the alteration of vascular stem cell physiology.
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Affiliation(s)
- Chiara Bernardini
- Department of Veterinary Medical Sciences - DIMEVET, University of Bologna, Ozzano Emilia, Bologna, Italy.
| | - Augusta Zannoni
- Department of Veterinary Medical Sciences - DIMEVET, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Martina Bertocchi
- Department of Veterinary Medical Sciences - DIMEVET, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Francesca Bianchi
- Stem Wave Institute for Tissue Healing (SWITH), Gruppo Villa Maria (GVM) Care & Research - Ettore Sansavini Health Science Foundation, Lugo, Ravenna, Italy; National Institute of Biostructures and Biosystems at the Department of Experimental, Diagnostic and Specialty Medicine, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Roberta Salaroli
- Department of Veterinary Medical Sciences - DIMEVET, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Giuliana Botelho
- Department of Veterinary Medical Sciences - DEVET, UNICENTRO - Universidade Estadual do Centro-Oeste do Paraná, Brazil
| | - Maria Laura Bacci
- Department of Veterinary Medical Sciences - DIMEVET, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Vittoria Ventrella
- Department of Veterinary Medical Sciences - DIMEVET, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - Monica Forni
- Department of Veterinary Medical Sciences - DIMEVET, University of Bologna, Ozzano Emilia, Bologna, Italy
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