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Han Y, Zhang L, Kong L, Wang G, Ye Z. Investigating the relationship between residual stress and micromechanical properties of blood vessels using atomic force microscopy. Microsc Res Tech 2024. [PMID: 38500314 DOI: 10.1002/jemt.24552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/20/2024]
Abstract
The magnitude of vascular residual stress, an inherent characteristic exclusive to the vasculature, exhibits a strong correlation with vascular compliance, tensile resistance, vascular rigidity, and vascular remodeling subsequent to vascular transplantation. Vascular residual stress can be quantified by evaluating the magnitude of the opening angle within the vascular ring. For decellularized vessels, the vascular ring's opening angle diminishes, consequently reducing residual stress. The decellularization process induces a laxity in the vascular fiber structure within decellularized vessels. To investigate the interrelation between the magnitude of residual stress and the microstructure as well as mechanical properties of elastin and collagen within blood vessels, this study employed fresh blood vessels, stress-relieved vessels, and sections of decellularized blood vessels. Structural scanning and force map experiments on the surface of the sections were conducted using atomic force microscopy (AFM). The findings revealed well-organized arrangements of elastin and collagen within fresh vessels, wherein the regularity of collagen and elastin exhibited variability as residual stress declined. Furthermore, both stress-relieved and decellularized vessel sections exhibited a reduction in the mean Young's modulus to varying extents in comparison to fresh vessels. The validity of our experimental results was further corroborated through finite element simulations. Hence, residual stress assumes a crucial role in upholding the structural stability of blood vessels, and the intricate association between residual stress and the microstructural and micromechanical properties of blood vessels holds significant implications for comprehending the impact of vascular diseases on vascular structure and advancing the development of biomimetic artificial blood vessels that replicate residual stress. RESEARCH HIGHLIGHTS: In this inquiry, we scrutinized the interconnection amid vascular residual stress and the microscale and nanoscale aspects of vascular structure and mechanical function, employing AFM. We ascertained that residual stress assumes a pivotal role in upholding vascular microstructure and mechanical attributes. The experimental outcomes were subsequently validated through finite element simulation.
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Affiliation(s)
- Yibo Han
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, People's Republic of China
| | - Liyuan Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, People's Republic of China
| | - Lingwen Kong
- Department of Cardiothoracic Surgery, Central Hospital of Chongqing University, Chongqing Emergency Medical Center, People's Republic of China
| | - Guixue Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, People's Republic of China
- JinFeng Laboratory, Chongqing, People's Republic of China
| | - Zhiyi Ye
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, College of Bioengineering, Chongqing University, Chongqing, People's Republic of China
- JinFeng Laboratory, Chongqing, People's Republic of China
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Mahheidari N, Kamalabadi-Farahani M, Nourani MR, Atashi A, Alizadeh M, Aldaghi N, Salehi M. Biological study of skin wound treated with Alginate/Carboxymethyl cellulose/chorion membrane, diopside nanoparticles, and Botox A. NPJ Regen Med 2024; 9:9. [PMID: 38413625 PMCID: PMC10899239 DOI: 10.1038/s41536-024-00354-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 02/14/2024] [Indexed: 02/29/2024] Open
Abstract
A hydrogel-based wound dressing with desirable properties is necessary for achieving functional skin integrity post-injury. This study focuses on preparing a hydrogel using Alginate/Carboxymethyl cellulose (Alg/CMC) as a base material. To evaluate its regenerative effects on full-thickness wounds, diopside nanoparticles and Botulinum toxin A (BTX-A) were incorporated into the hydrogel along with chorion membrane. The diopside nanoparticles (DNPs) act as a proangiogenic factor, promoting proliferation and regulating inflammation, while the chorion membrane facilitates these processes. Additionally, BTX-A prevents scar formation and aids in wound closure. The nanoparticles and hydrogel were characterized using various techniques, and their cytocompatibility was assessed. In vivo studies and quantitative polymerase chain reaction analysis showed that wound area reduction was significant after two weeks of treatment with the Alg/CMC/ChNPs/DNPs/BTX-A hydrogel. Overall, this scaffold demonstrated potential for promoting tissue regeneration and new epithelization formation, making it a promising candidate for enhancing skin restoration in wound treatments.
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Affiliation(s)
- Naimeh Mahheidari
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Mohammad Kamalabadi-Farahani
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Mohammad Reza Nourani
- Tissue Engineering and Regenerative Medicine Research Center, Baqiyatallah University of Medical Sciences, Tehran, 1435916471, Iran
- Department of Dental and Biomedical Materials Science, School of Dentistry, Nagasaki University, Nagasaki, 8528102, Japan
| | - Amir Atashi
- Tissue Engineering and stem cells research center, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
- Department of Hematology, School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Morteza Alizadeh
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Niloofar Aldaghi
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran.
- Tissue Engineering and stem cells research center, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran.
- Health Technology Incubator Center, Shahroud University of Medical Sciences, Shahroud, 3614773955, Iran.
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Li S, Yang L, Zhao Z, Wang J, Lv H, Yang X. Fabrication of mechanical skeleton of small-diameter vascular grafts via rolling on water surface. Biomed Mater 2023; 18. [PMID: 36731137 DOI: 10.1088/1748-605x/acb89a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 02/01/2023] [Indexed: 02/04/2023]
Abstract
Mimicking the multilayered structure of blood vessels and constructing a porous inner surface are two effective approaches to achieve mechanical matching and rapid endothelialization to reduce occlusion in small-diameter vascular grafts. However, the fabrication processes are complex and time consuming, thus complicating the fabrication of personalized vascular grafts. A simple and versatile strategy is proposed to prepare the skeleton of vascular grafts by rolling self-adhesive polymer films. These polymer films are directly fabricated by dropping a polymer solution on a water surface. For the tubes, the length and wall thickness are controlled by the rolling number and position of each film, whereas the structure and properties are tailored by regulating the solution composition. Double-layer vascular grafts (DLVGs) with microporous inner layers and impermeable outer layers are constructed; a microporous layer is formed by introducing a hydrophilic polymer into a polyurethane (PU) solution. DLVGs exhibit a J-shaped stress-strain deformation profile and compliance comparable to that of coronary arteries, sufficient suture retention strength and burst pressure, suitable hemocompatibility, significant adhesion, and proliferation of human umbilical vein endothelial cells. Freshly prepared PU tubes exhibit good cytocompatibility. Thus, this strategy demonstrates potential for rapid construction of small-diameter vascular grafts for individual customization.
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Affiliation(s)
- Shuo Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Jinzhai Road No 96, Hefei 230026, People's Republic of China
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
| | - Lei Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Jinzhai Road No 96, Hefei 230026, People's Republic of China
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
| | - Zijian Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Jinzhai Road No 96, Hefei 230026, People's Republic of China
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
| | - Jie Wang
- Huangpu Institute of Advanced Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Guangzhou 510530, People's Republic of China
| | - Hongying Lv
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
| | - Xiaoniu Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Jinzhai Road No 96, Hefei 230026, People's Republic of China
- Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, People's Republic of China
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Abstract
Vascular prostheses (grafts) are widely used for hemodialysis blood access, trauma repair, aneurism repair, and cardiovascular reconstruction. However, smaller-diameter (≤4 mm) grafts that would be valuable for many reconstructions have not been achieved to date, although hundreds of papers on small-diameter vascular grafts have been published. This perspective article presents a hypothesis that may open new research avenues for the development of small-diameter vascular grafts. A historical review of the vascular graft literature and specific types of vascular grafts is presented focusing on observations important to the hypothesis to be presented. Considerations in critically reviewing the vascular graft literature are discussed. The hypothesis that perhaps the "biocompatible biomaterials" comprising our vascular grafts-biomaterials that generate dense, nonvascularized collagenous capsules upon implantation-may not be all that biocompatible is presented. Examples of materials that heal with tissue reconstruction and vascularity, in contrast to the fibrotic encapsulation, are offered. Such prohealing materials may lead the way to a new generation of vascular grafts suitable for small-diameter reconstructions.
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Affiliation(s)
- Buddy Ratner
- Center for Dialysis Innovation (CDI), Departments of Bioengineering and Chemical Engineering, University of Washington, Seattle, WA 98195, USA
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Su H, Li Q, Li D, Li H, Feng Q, Cao X, Dong H. A versatile strategy to construct free-standing multi-furcated vessels and a complicated vascular network in heterogeneous porous scaffolds via combination of 3D printing and stimuli-responsive hydrogels. Mater Horiz 2022; 9:2393-2407. [PMID: 35789239 DOI: 10.1039/d2mh00314g] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Mimicking complex structures of natural blood vessels and constructing vascular networks in tissue engineering scaffolds are still challenging now. Herein we demonstrate a new and versatile strategy to fabricate free-standing multi-furcated vessels and complicated vascular networks in heterogeneous porous scaffolds by integrating stimuli-responsive hydrogels and 3D printing technology. Through the sol-gel transition of temperature-responsive gelatin and conversion between two physical crosslinking networks of pH-responsive chitosan (i.e., electrostatic network between protonated chitosan and sulfate ion, crystalline network of neutral chitosan), physiologically-stable gelatin/chitosan hydrogel tubes can be constructed. While stimuli-responsive hydrogels confer the formation mechanism of the hydrogel tube, 3D printing confers the feasibility to create a multi-furcated structure and interconnected network in various heterogeneous porous scaffolds. As a consequence, biomimetic multi-furcated vessels (MFVs) and heterogeneous porous scaffolds containing multi-furcated vessels (HPS-MFVs) can be constructed precisely. Our data further confirm that the artificial blood vessel (gelatin/chitosan hydrogel tube) shows good physiological stability, mechanical strength, semi-permeability, hemocompatibility, cytocompatibility and low in vivo inflammatory response. Co-culture of hepatocyte (L02 cells) and human umbilical vein endothelial cells (HUVECs) in HPS-MFVs indicates the successful construction of a liver model. We believe that our method offers a simple and easy-going way to achieve robust fabrication of free-standing multi-furcated blood vessels and prevascularization of porous scaffolds for tissue engineering and regenerative medicine.
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Affiliation(s)
- Hongxian Su
- Department of Biomaterials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, P. R. China
| | - Qingtao Li
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Dingguo Li
- Department of Biomaterials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, P. R. China
| | - Haofei Li
- Department of Biomaterials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Guangdong Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Qi Feng
- Department of Biomaterials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Guangdong Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Xiaodong Cao
- Department of Biomaterials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Guangdong Province Key Laboratory of Biomedical Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Hua Dong
- Department of Biomaterials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510006, China.
- National Engineering Research Center for Tissue Restoration and Reconstruction (NERC-TRR), Guangzhou, 510006, China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, P. R. China
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Rodríguez-soto MA, Polanía-sandoval CA, Aragón-rivera AM, Buitrago D, Ayala-velásquez M, Velandia-sánchez A, Peralta Peluffo G, Cruz JC, Muñoz Camargo C, Camacho-mackenzie J, Barrera-carvajal JG, Briceño JC. Small Diameter Cell-Free Tissue-Engineered Vascular Grafts: Biomaterials and Manufacture Techniques to Reach Suitable Mechanical Properties. Polymers (Basel) 2022; 14:3440. [PMID: 36080517 PMCID: PMC9460130 DOI: 10.3390/polym14173440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/06/2022] [Accepted: 07/06/2022] [Indexed: 12/25/2022] Open
Abstract
Vascular grafts (VGs) are medical devices intended to replace the function of a blood vessel. Available VGs in the market present low patency rates for small diameter applications setting the VG failure. This event arises from the inadequate response of the cells interacting with the biomaterial in the context of operative conditions generating chronic inflammation and a lack of regenerative signals where stenosis or aneurysms can occur. Tissue Engineered Vascular grafts (TEVGs) aim to induce the regeneration of the native vessel to overcome these limitations. Besides the biochemical stimuli, the biomaterial and the particular micro and macrostructure of the graft will determine the specific behavior under pulsatile pressure. The TEVG must support blood flow withstanding the exerted pressure, allowing the proper compliance required for the biomechanical stimulation needed for regeneration. Although the international standards outline the specific requirements to evaluate vascular grafts, the challenge remains in choosing the proper biomaterial and manufacturing TEVGs with good quality features to perform satisfactorily. In this review, we aim to recognize the best strategies to reach suitable mechanical properties in cell-free TEVGs according to the reported success of different approaches in clinical trials and pre-clinical trials.
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Hou J, Zhang X, Wu Y, Jie J, Wang Z, Chen GQ, Sun J, Wu LP. Amphiphilic and fatigue-resistant organohydrogels for small-diameter vascular grafts. Sci Adv 2022; 8:eabn5360. [PMID: 35905180 PMCID: PMC9337766 DOI: 10.1126/sciadv.abn5360] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 06/15/2022] [Indexed: 05/27/2023]
Abstract
Hydrogels are used in vascular tissue engineering because of their good biocompatibility. However, most natural hydrogels exhibit high swelling ratio, poor mechanical stability, and low durability, which are key limitations for wider applications. Amphiphilic and fatigue-resistant organohydrogels were fabricated here via the click chemical reaction of unsaturated functional microbial polyhydroxyalkanoates and polyethylene glycol diacrylate and a combination of two-dimensional material graphdiyne. These organohydrogels were maintained stable in body fluids over time, and their tensile moduli remained unchanged after more than 2000 cycles of cyclic stretching. The tubular scaffolds presented good biocompatibility and perfusion in vitro. After transplantation in vivo, the vascular grafts exhibited obvious cell infiltration and tissue regeneration, having a higher patency rate than the control group in 3 months. This fabrication method provides a strategy of improving and promoting the application of organohydrogels as implant materials for small-diameter vascular graft.
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Affiliation(s)
- Jinfei Hou
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xu Zhang
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing 100084, China
- Center of Synthetic and Systems Biology, School of Life Sciences, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yuqiong Wu
- Center for Chemical Biology and Drug Discovery, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, People’s Republic of China
| | - Junjin Jie
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhenxing Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Guo-Qiang Chen
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Tsinghua University, Beijing 100084, China
- Center of Synthetic and Systems Biology, School of Life Sciences, Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jiaming Sun
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin-Ping Wu
- Center for Chemical Biology and Drug Discovery, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, People’s Republic of China
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Rohringer S, Schneider KH, Eder G, Hager P, Enayati M, Kapeller B, Kiss H, Windberger U, Podesser BK, Bergmeister H. Chorion-derived extracellular matrix hydrogel and fibronectin surface coatings show similar beneficial effects on endothelialization of expanded polytetrafluorethylene vascular grafts. Mater Today Bio 2022; 14:100262. [PMID: 35509865 PMCID: PMC9059097 DOI: 10.1016/j.mtbio.2022.100262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 11/19/2022] Open
Abstract
The endothelium plays an important regulatory role for cardiovascular homeostasis. Rapid endothelialization of small diameter vascular grafts (SDVGs) is crucial to ensure long-term patency. Here, we assessed a human placental chorionic extracellular matrix hydrogel (hpcECM-gel) as coating material and compared it to human fibronectin in-vitro. hpcECM-gels were produced from placental chorion by decellularization and enzymatic digestion. Human umbilical vein endothelial cells (HUVECs) were seeded to non-, fibronectin- or hpcECM-gel-coated expanded polytetrafluorethylene (ePTFE) SDVGs. Coating efficiency as well as endothelial cell proliferation, migration and adhesion studies on grafts were performed. hpcECM-gel depicted high collagen and glycosaminoglycan content and neglectable DNA amounts. Laminin and fibronectin were both retained in the hpcECM-gel after the decellularization process. HUVEC as well as endothelial progenitor cell attachment were both significantly enhanced on hpcECM-gel coated grafts. HUVECs seeded to hpcECM-gel depicted significantly higher platelet endothelial cell adhesion molecule-1 (PECAM-1) expression in the perinuclear region. Cell retention to flow was enhanced on fibronectin and hpcECM-gel coated grafts. Since hpcECM-gel induced a significantly higher endothelial cell adhesion to ePTFE than fibronectin, it represents a possible alternative for SDVG modification to improve endothelialization.
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Affiliation(s)
- Sabrina Rohringer
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Karl H. Schneider
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Gabriela Eder
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Pia Hager
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Marjan Enayati
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Barbara Kapeller
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Herbert Kiss
- Medical University of Vienna, Department of Obstetrics and Gynaecology, Division of Obstetrics and Feto-Maternal Medicine, Währinger Gürtel 18-20, 1090, Vienna, Austria
| | - Ursula Windberger
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Bruno K. Podesser
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Helga Bergmeister
- Medical University of Vienna, Center for Biomedical Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Cardiovascular Research, Währinger Gürtel 18-20, 1090, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
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