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Engineering of a polymer layered bio-hybrid heart valve scaffold
Sarvepalli Jahnavi, G. S. Bhuvaneshwar,
Published in Elsevier Ltd
2015
PMID: 25842134
Volume: 51
   
Pages: 263 - 273
Abstract
Abstract Current treatment strategy for end stage valve disease involves either valvular repair or replacement with homograft/mechanical/bioprosthetic valves. In cases of recurrent stenosis/ regurgitation, valve replacement is preferred choice of treatment over valvular repair. Currently available mechanical valves primarily provide durability whereas bioprosthetic valves have superior tissue compatibility but both lack remodelling and regenerative properties making their utility limited in paediatric patients. With advances in tissue engineering, attempts have been made to fabricate valves with regenerative potential using various polymers, decellularized tissues and hybrid scaffolds. To engineer an ideal heart valve, decellularized bovine pericardium extracellular matrix (DBPECM) is an attractive biocompatible scaffold but has weak mechanical properties and rapid degradation. However, DBPECM can be modified with synthetic polymers to enhance its mechanical properties. In this study, we developed a Bio-Hybrid scaffold with non-cross linked DBPECM in its native structure coated with a layer of Polycaprolactone-Chitosan (PCL-CH) nanofibers that displayed superior mechanical properties. Surface and functional studies demonstrated integration of PCL-CH to the DBPECM with enhanced bio and hemocompatibility. This engineered Bio-Hybrid scaffold exhibited most of the physical, biochemical and functional properties of the native valve that makes it an ideal scaffold for fabrication of cardiac valve with regenerative potential. © 2015 Elsevier B.V. All rights reserved.
About the journal
JournalData powered by TypesetMaterials Science and Engineering C
PublisherData powered by TypesetElsevier Ltd
ISSN09284931
Open AccessNo
Concepts (61)
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    Biocompatibility
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    Biomechanics
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    Chitin
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    Chitosan
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    Heart
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    Mammals
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    Mechanical properties
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    PEDIATRICS
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    Polycaprolactone
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    Polymers
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    Repair
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    Scaffolds (biology)
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    Tissue
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    Tissue engineering
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    BIO-HYBRIDS
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    BIOCOMPATIBLE SCAFFOLDS
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    BOVINE PERICARDIUM
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    DECELLULARIZED TISSUES
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    Extracellular matrices
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    Functional properties
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    HEART VALVES
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    TISSUE COMPATIBILITY
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    Valves (mechanical)
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    Biomaterial
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    Polyester
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    Animal
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    BIOPROSTHESIS
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    Bovine
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    Cell culture
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    Cell free system
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    Chemistry
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    Cytology
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    Device failure analysis
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    Devices
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    Endothelium cell
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    Equipment design
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    Extracellular matrix
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    HEART VALVE PROSTHESIS
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    Human
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    Materials testing
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    PERICARDIUM
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    Physiology
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    Synthesis
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    Tensile strength
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    Tissue scaffold
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    Transplantation
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    YOUNG MODULUS
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    Animals
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    BIOPROSTHESIS
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    Cattle
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    Cell-free system
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    Cells, cultured
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    Coated materials, biocompatible
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    Elastic modulus
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    Endothelial cells
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    Equipment failure analysis
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    HEART VALVE PROSTHESIS
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    Humans
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    PERICARDIUM
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    Polyesters
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    Tissue scaffolds