MARCOS VINICIUS SURMANI MARTINS
4 resultados
Resultados de Busca
Agora exibindo 1 - 4 de 4
Artigo IPEN-doc 23191 Electrochemical preparation and characterization of PNIPAM-HAp scaffolds for bone tissue engineering2017 - RIBEIRO, CHARLENE A.; MARTINS, MARCOS V.S.; BRESSIANI, ANA H.; BRESSIANI, JOSE C.; LEYVA, MARIA E.; QUEIROZ, ALVARO A.A. deIn the last decade, a variety of methods for fabrication of three-dimensional biomimetic scaffolds based on hydrogels have been developed for tissue engineering. However, many methods require the use of catalysts which compromises the biocompatibility of the scaffolds. The electrochemical polymerization (ECP) of acrylic monomers has received an increased attention in recent years due to its versatility in the production of highly biocompatible coatings for the electrodes used in medical devices. The main aim of this work was the use of ECP as scaffold fabrication technique to produce highly porous poly(N-isopropylacrylamide) (PNIPAM)/hydroxyapatite (HAp) composite for bone tissue regeneration. The prepared PNIPAM-HAp porous scaffolds were characterized by SEM, FTIR, water swelling, porosity measurements and X-ray diffraction (XRD) techniques. FTIR indicates that ECP promotes a successful conversion of NIPAM to PNIPAM. The water swelling and porosity were shown to be controlled by the HAp content in PNIPAM-HAp scaffolds. The PNIPAM-HAp scaffolds exhibited no cytotoxicity to MG63 cells, showing that ECP are potentially useful for the production of PNIPAMHAp scaffolds. To address the osteomyelitis, a significant complication in orthopedic surgeries, PNIPAM-HAp scaffolds were loaded with the antibiotic oxacillin. The oxacillin release and the bacterial killing activity of the released oxacillin from PNIPAM-HAp against S. aureus and P. aeruginosa were demonstrated. These observations demonstrate that ECP are promising technique for the production of non-toxic, biocompatible PNIPAM-HAp scaffolds for tissue engineering.Artigo IPEN-doc 17325 Compósito termosensível para regeneração do tecido ósseo2011 - MARTINS, MARCOS V.S.; LEYVA, MARIA E.; BRESSIANI, ANA H.; BRESSIANI, JOSE C.; QUEIROZ, ALVARO A.A. deArtigo IPEN-doc 17961 The influence of ageing in pseudoboehmites synthesis2011 - MUNHOZ JUNIOR, ANTONIO H.; MARTINS, MARCOS V.S.; USSUI, VALTER; CRUZ, KARINA; ZANDONADI, ALEXANDRE R.; MIRANDA, LEILA F.Artigo IPEN-doc 18843 The influence of ageing in pseudoboehmites synthesis2012 - MUNHOZ JUNIOR, ANTONIO H.; MARTINS, MARCOS V.S.; USSUI, VALTER; CRUZ, KARINA; ZANDONADI, ALEXANDRE R.; MIRANDA, LEILA F.