Desarrollo metodológico de una tinta de biomaterial a base de pegda, dirigido al diseño de apósitos para úlceras crónicas de pie diabético

dc.contributor.advisorSolarte David, Víctor Alfonsospa
dc.contributor.advisorBecerra Bayona, Silvia Milenaspa
dc.contributor.apolounabBecerra Bayona, Silvia Milena [silvia-milena-becerra-bayona]
dc.contributor.authorGaleano Blanco, Marly Judithspa
dc.contributor.cvlachttps://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0001329391*
dc.contributor.cvlacBecerra Bayona, Silvia Milena [0001568861]
dc.contributor.googlescholarBecerra Bayona, Silvia Milena [5wr21EQAAAAJ]
dc.contributor.linkedinBecerra Bayona, Silvia Milena [silvia-becerra-3174455a]
dc.contributor.orcidhttps://orcid.org/0000-0002-9856-1484*
dc.contributor.orcidBecerra Bayona, Silvia Milena [0000-0002-4499-5885]
dc.contributor.researchgateBecerra Bayona, Silvia Milena [Silvia-Becerra-Bayona]
dc.contributor.scopusBecerra Bayona, Silvia Milena [36522328100]
dc.coverage.campusUNAB Campus Bucaramangaspa
dc.coverage.spatialColombiaspa
dc.date.accessioned2021-03-16T18:42:22Z
dc.date.available2021-03-16T18:42:22Z
dc.date.issued2021
dc.degree.nameIngeniero Biomédicospa
dc.description.abstractActualmente los apósitos tipo hidrogel usados para el tratamiento de úlceras crónicas de pie diabético favorecen de manera limitada procesos de regeneración al ser apósitos bidimensionales, que sumado al potencial del PEGDA como biomaterial versátil en el campo de la ingeniería de tejidos, conviene desarrollar apósitos tridimensionales a base de PEGDA, lo que es posible mediante la bioimpresión 3D. De ahí que en esta investigación se evaluó la imprimibilidad de tinta de biomaterial a base de PEGDA usada en extrusión y fotopolimerización in-situ, con el fin de fabricar hidrogeles utilizando al Irgacure 2959 como fotoiniciador. Con este fin, se investigó el efecto que tiene la concentración de la solución precursora, además de los parámetros de bioimpresión tales como la velocidad de impresión, el flujo de material extruido y la altura de capa de impresión en la imprimibilidad. Sim embargo, pese al establecimiento de los mejores parámetros de bioimpresión: velocidad de impresión de 1 mm/s, altura de capa de 0.1 mm y flujo de 100%, los resultados demuestran que la viscosidad de la tinta de biomaterial a base de PEGDA requiere ser incrementada, para lograr la deposición de un filamento cilíndrico con una difusión de material mínima. Adicionalmente se llegó a la conclusión de que la intensidad de la luz ultravioleta de la bioimpresora debe ser mayor, para garantizar una polimerización eficiente y homogénea. La metodología desarrollada en este trabajo permite establecer las pautas de la fabricación de andamios a base de PEGDA, con el potencial uso en el diseño de matrices que lleven al desarrollo de alternativas terapéuticas tipo apósito, para el tratamiento de las úlceras crónicas de pie diabético, considerando la profundidad y la topografía de la úlcera.spa
dc.description.abstractenglishCurrently the hydrogel-type dressings used for the treatment of chronic diabetic foot ulcers favor regeneration processes in a limited way as they are two-dimensional dressings, which added to the potential of PEGDA as a versatile biomaterial in the field of tissue engineering, it is convenient to develop three-dimensional dressings to PEGDA base, which is made possible by 3D bioprinting. Hence, in this research, the printability of PEGDA-based biomaterial ink used in extrusion and in-situ photopolymerization was evaluated, in order to manufacture hydrogels using Irgacure 2959 as a photoinitiator. To this end, the effect of precursor solution concentration, in addition to bioprinting parameters such as print speed, extrudate flow, and print layer height, on printability was investigated. However, despite the establishment of the best bioprinting parameters: printing speed of 1 mm / s, layer height of 0.1 mm and flow of 100%, the results show that the viscosity of the PEGDA-based biomaterial ink requires be increased, to achieve the deposition of a cylindrical filament with minimal material diffusion. Additionally, it was concluded that the intensity of the ultraviolet light from the bioprinter must be greater, to guarantee an efficient and homogeneous polymerization. The methodology developed in this work allows establishing the guidelines for the manufacture of PEGDA-based scaffolds, with the potential use in the design of matrices that lead to the development of dressing-type therapeutic alternatives for the treatment of chronic diabetic foot ulcers. considering the depth and topography of the ulcer.eng
dc.description.degreelevelPregradospa
dc.description.learningmodalityModalidad Presencialspa
dc.description.tableofcontentsCapítulo 1. Problema u Oportunidad ................................................................................. 8 Introducción .................................................................................................................... 8 Planteamiento del Problema ............................................................................................ 9 Justificación ................................................................................................................... 11 Pregunta Problema ........................................................................................................ 12 Objetivo General ........................................................................................................... 12 Objetivos Específicos .................................................................................................... 12 Limitaciones y Delimitaciones ...................................................................................... 13 Capítulo 2. Marco Teórico ................................................................................................ 14 Hidrogeles de PEDGA: Características del PEDGA y Polimerización ........................ 14 Bioimpresión: Tipos de Bioimpresión .......................................................................... 16 Parámetros de Biompresión en Extrusión 3D ........................................................... 17 Biotintas: Definición y su Distinción de Tinta de Biomaterial ..................................... 20 Requerimientos del Material de Bioimpresión.............................................................. 20 Capítulo 3. Estado del Arte ............................................................................................... 22 Aplicaciones en la Liberación de Fármacos .................................................................. 22 Aplicaciones en la Ingeniería de Tejidos ...................................................................... 23 Aplicaciones en el Área de Biosensado ........................................................................ 24 Aplicaciones del PEGDA en la Regeneración de Heridas ............................................ 25 Bioimpresión 3D e Hidrogeles PEGDA........................................................................ 26 Composición del Hidrogel de PEGDA ..................................................................... 26 Evaluación de la Impribilidad de Tintas de Biomaterial en Extrusión 3D ............... 28 Capítulo 4. Metodología ................................................................................................... 33 Preparación de las Soluciones Precursoras de PEGDA. ............................................... 33 Impresión de Hidrogeles de PEGDA ............................................................................ 33 Evaluación de la Morfología del Filamento .................................................................. 36 Evaluación de la Fidelidad de la Forma ........................................................................ 39 Análisis Estadísticos ...................................................................................................... 41 Capítulo 5. Resultados y Análisis de Resultados .............................................................. 43 Resultados ..................................................................................................................... 43 Impresión de Hidrogeles de PEGDA ........................................................................ 43 Evaluación de la Morfología del Filamento.............................................................. 50 Evaluación de la Fidelidad de la Forma .................................................................... 53 Análisis de Resultados .................................................................................................. 59 Capítulo 6. Conclusiones y Recomendaciones ................................................................. 63 Referencias ........................................................................................................................ 64spa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameinstname:Universidad Autónoma de Bucaramanga - UNABspa
dc.identifier.reponamereponame:Repositorio Institucional UNABspa
dc.identifier.repourlrepourl:https://repository.unab.edu.cospa
dc.identifier.urihttp://hdl.handle.net/20.500.12749/12431
dc.language.isospaspa
dc.publisher.facultyFacultad Ingenieríaspa
dc.publisher.grantorUniversidad Autónoma de Bucaramanga UNABspa
dc.publisher.programPregrado Ingeniería Biomédicaspa
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.accessrightshttp://purl.org/coar/access_right/c_abf2spa
dc.rights.creativecommonsAtribución-NoComercial-SinDerivadas 2.5 Colombia*
dc.rights.localAbierto (Texto Completo)spa
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.5/co/*
dc.subject.keywordsBiomedical engineeringeng
dc.subject.keywordsEngineeringeng
dc.subject.keywordsMedical electronicseng
dc.subject.keywordsBiological physicseng
dc.subject.keywordsBioengineeringeng
dc.subject.keywordsMedical instruments and apparatuseng
dc.subject.keywordsMedicineeng
dc.subject.keywords3D bioprintingeng
dc.subject.keywordsDiacrylated polyethylene glycoleng
dc.subject.keywordsPrintabilityeng
dc.subject.keywordsUlcerseng
dc.subject.keywordsFoot diseaseseng
dc.subject.keywordsClinical engineeringeng
dc.subject.keywordsDiabetic footeng
dc.subject.lembIngeniería biomédicaspa
dc.subject.lembIngenieríaspa
dc.subject.lembBiofísicaspa
dc.subject.lembBioingenieríaspa
dc.subject.lembMedicinaspa
dc.subject.lembÚlcerasspa
dc.subject.lembEnfermedades de los piesspa
dc.subject.lembPie diabéticospa
dc.subject.proposalIngeniería clínicaspa
dc.subject.proposalElectrónica médicaspa
dc.subject.proposalInstrumentos y aparatos médicosspa
dc.subject.proposalBiompresión 3Dspa
dc.subject.proposalPolietilenglicol diacriladospa
dc.subject.proposalImprimibilidadspa
dc.titleDesarrollo metodológico de una tinta de biomaterial a base de pegda, dirigido al diseño de apósitos para úlceras crónicas de pie diabéticospa
dc.title.translatedMethodological development of a pegda-based biomaterial ink, aimed at the design of dressings for chronic diabetic foot ulcersspa
dc.type.coarhttp://purl.org/coar/resource_type/c_7a1f
dc.type.driverinfo:eu-repo/semantics/bachelorThesis
dc.type.hasversioninfo:eu-repo/semantics/acceptedVersion
dc.type.localTrabajo de Gradospa
dc.type.redcolhttp://purl.org/redcol/resource_type/TP

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