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Articles 1 - 5 of 5
Full-Text Articles in Engineering
Development Of Granulation Tissue Mimetic Scaffolds For Skin Healing, Adam Hopfgartner
Development Of Granulation Tissue Mimetic Scaffolds For Skin Healing, Adam Hopfgartner
Electronic Thesis and Dissertation Repository
Impaired skin healing is a significant and growing clinical concern, particularly in relation to diabetes, venous insufficiency and immobility. Previously, we developed electrospun scaffolds for the delivery of periostin (POSTN) and connective tissue growth factor 2 (CCN2), matricellular proteins involved in the proliferative phase of healing. This study aimed to design and validate a novel electrosprayed coaxial microsphere for the encapsulation of fibroblast growth factor 9 (FGF9), as a component of the POSTN/CCN2 scaffold, to promote angiogenic stability during wound healing. For the first time, we observed a pro-proliferative effect of FGF9 on human dermal fibroblasts (HDF) in vitro, indicating …
Electrospun Collagen Fibers For Tissue Regeneration Applications, Ying Li
Electrospun Collagen Fibers For Tissue Regeneration Applications, Ying Li
Electronic Thesis and Dissertation Repository
Tissue engineering aims to regenerate damaged and deceased tissue by combining cells with scaffold made from an appropriate biomaterial and providing a conducive environment to guide cell growth and the formation or regeneration of new tissue or organ. While collagen, an important material of the extracellular matrix (ECM), is a natural choice as a scaffold biomaterial, the conducive environment can only be created by having the ability to control the geometry, organization, structural and mechanical properties of the scaffold. Moreover, degradability and degradation rate control of the scaffold has to be taken into consideration too. In this work, we aim …
Engineering Graphene Oxide-Based Nanostructures For Dna Sensors, Aditya Balaji
Engineering Graphene Oxide-Based Nanostructures For Dna Sensors, Aditya Balaji
Electronic Thesis and Dissertation Repository
Various nanostructures have been explored in DNA biosensors to convert the hybridization of DNA sequences to easily measurable processes, including optical, mechanical, magnetic, or electrochemical process. In this thesis, graphene oxide, a two-dimensional nanostructure, is applied in quenching the fluorescence of a core-shell nanoparticles modified with targeted DNA sequences. The core-shell nanoparticles, iron oxide (Fe3O4) core, and fluorescent silica (SiO2) shell, were produced through a wet chemical process which can directly link to a targeted DNA sequence (DNA-t), and the graphene oxide nanosheets were produced by the oxidation of graphite. In the meantime, …
Preparation And Characterization Of Electrospun Rgo-Poly(Ester Amide) Tissue Engineering Scaffolds, Hilary Stone
Preparation And Characterization Of Electrospun Rgo-Poly(Ester Amide) Tissue Engineering Scaffolds, Hilary Stone
Electronic Thesis and Dissertation Repository
Tissue engineering scaffolds should support tissue maturation through exposure to biologically relevant stimuli and through successful cell infiltration. External electrical stimulation is particularly relevant for cardiac and neural applications, and requires conductive scaffolds to propagate electrical signals; cell infiltration is only possible with scaffolds that have sufficient porosity. The aim of this study was to impart conductivity and increased porosity of electrospun poly(ester amide) (PEA) scaffolds. Reduced graphene oxide (rGO) was incorporated into blend PEA and coaxial PEA-chitosan fibrous scaffolds, which increased scaffold conductivity and supported cardiac differentiation. The novel combination of ultrasonication and leaching of a sacrificial polymer was …
Covalently Crosslinked Organic/Inorganic Hybrid Biomaterials For Bone Tissue Engineering Applications, Dibakar Mondal
Covalently Crosslinked Organic/Inorganic Hybrid Biomaterials For Bone Tissue Engineering Applications, Dibakar Mondal
Electronic Thesis and Dissertation Repository
Scaffolds are key components for bone tissue engineering and regeneration. They guide new bone formation by mimicking bone extracellular matrix for cell recruitment and proliferation. Ideally, scaffolds for bone tissue engineering need to be osteoconductive, osteoinductive, porous, degradable and mechanically competent. As a single material can not provide all these requirements, composites of several biomaterials are viable solutions to combine various properties. However, conventional composites fail to fulfil these requirements due to their distinct phases at the microscopic level. Organic/inorganic (O/I) class II hybrid biomaterials, where the organic and inorganic phases are chemically crosslinked on a molecular scale, hence the …