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The in vitro mechanical properties of small diameter Poly(vinyl) alcohol hydrog...
Alexandre, Nuno; Nunes, Natacha; Rodrigues, Miguel; Maurício, Ana Colette; Luís, Ana Lúcia; Lopes, Ascensão; Santos, José DomingosIntroduction The production of artificial vascular grafts of small diameter is a fluorescing line of investigation. PVA is a biomaterial that has been used for several biomedical applications and nowadays as a vascular graft. However the mechanical properties were never characterized in vitro. It was our objective to produce small diameter PVA grafts and characterize their physical and mechanical properties for...
In vivo evaluation of the potencial of mesenchymal stem cells (MSCs) from whart...
Alexandre, Nuno; Lopes, Ascensão; Rodrigues, Miguel; Amorim, Irina; Pereira, Tiaho; Gärtner, Andrea; Maurício, Ana Colette; Santos, José DomingosIntroduction: The use of cellular systems for improving biointegration of medical devices is a current trend of tissue engineering. The biocompatibility is a key aspect that can influence the performance of medical devices, for that reason inflammatory and foreign body reaction must be evaluated in pre-clinical studies. MSCs can modify the interaction of biomaterials with tissues by several mechanisms through t...
Application of Vascular grafts od Polyvinyl alcohol hydrogel associated to mese...
Alexandre, Nuno; Lopes, Ascensão; Nunes, Natacha; Amorim, Irina; Maurício, Ana Colette; Santos, José Domingos; Luís, Ana LúciaApplication of vascular grafts of the polyvinyl alcohol hydrogel (PVA) associated with MSCs from Wharton jelly in an animal model (sheep). N Alexandre, MA Lopes, N Fernandes, M Rodrigues, I Amorim, AC Mauricio, AL Luís Introduction: There is a great demand for new artificial vascular grafts of small diameter (< 6 mm) due to the functional limitations of the currently used biomaterials (ePTFE and Dacron). Polyv...
Development of hydroxyapatite-glass composites for biomedical applications
Santos, José Domingos da SilvaDissertação apresentada para obtenção do grau de Doutor em Engenharia Metalúrgica, na Faculdade de Engenharia da Universidade do Porto, sob a orientação do Prof. Doutor F. J. Monteiro
Mechanical characterisation of porous glass reinforced hydroxyapatite ceramics:...
Silva,Marcelo Henrique Prado da; Lemos,Alexandra Fernandes; Ferreira,José Maria da Fonte; Santos,José DomingosIn the present study, mechanical properties of porous glass reinforced hydroxyapatite bioceramics were assessed by microhardness, bending and compression tests and fracture toughness determination. Porous discs were produced by a dry method using wax spheres as pore formers. Green bodies were sintered and the final microstructure of the composites consists of hydroxyapatite, alpha and beta tricalcium phosphate ...
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