Biocompatibility In Vitro And In Vivo
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. Polymeric microcapsules poduction from sodium alginic acid for cell therapy
Development of polymeric materials has been increasingly emphasized in Biomedicine. Here, we evaluate the use of microcapsules made of Biodritin®, a biocompatible polymer compound which contains sodium alginic acid, a natural polymer extracted from algae, and Cis-Chondroitin sulfate, a glycosaminoglycan from the extracellular matrix. Gelation of this polyme
Materials Research. Publicado em: 2007-12
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14. AVALIAÇÃO IN VITRO DA LIBERAÇÃO DE ÍONS E DAS ALTERAÇÕES DE SUPERFÍCIE DE MINI-IMPLANTES ORTODÔNTICOS / AVALIAÇÃO IN VITRO DA LIBERAÇÃO DE ÍONS E DAS ALTERAÇÕES DE SUPERFÍCIE DE MINI-IMPLANTES ORTODÔNTICOS
Mini-implants are successfully used as anchorage devices in orthodontics. The miniimplants alloys are subject to corrosion process in the oral environment. The metallic ions release may lead to adverse physiological effects, including citotoxicity,genotoxicity, carcinogenesis and allergic reactions. The aim of this study was to evaluate the ions release and
Publicado em: 2007
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15. Avaliação da biocompatibilidade de diamantes microestruturados e nanoestruturados : ensaios " in vitro" e "in vivo" / Evaluation the biocompatibility of microcrystalline and nanocrystallime diamond: "in vitro" and "in vivo" assays
O desenvolvimento de novos materiais para a produção de implantes ortopédicos tem sido uma busca constante, devido principalmente ao aumento das aplicações clínicas e à necessidade de se alcançar maior durabilidade, diminuindo assim as cirurgias de revisão. O diamante CVD obtido por deposição química da fase vapor é um novo material com grande p
Publicado em: 2006
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16. Avaliação "in vitro" dos processos de proliferação e diferenciação de celulas osteoblasticas e a mineralização sobre matrizes anionicas de colageno para reparo osseo
Collagen has been extensively described as an important material in bone tissue engineering due to its biocompatibility, biodegradability, low antigenicity, and high tensile strength. However, collagen scaffolds in their pure form have some drawbacks and improvements in its physical, chemical and biological properties are necessary to overcome those inadequa
Publicado em: 2005
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17. Preparation and biocompatibility of poly (methyl methacrylate) reinforced with bioactive particles
Calcium phosphates and bioactive glasses have been used in many biomedical applications for more than 30 years due basically to their bioactive behavior. However, ceramics are too brittle for applications that require high levels of toughness and easy processability. In this work, a biphasic calcium phosphate (BCP) and a bioactive glass composition (BG) were
Materials Research. Publicado em: 2003-06
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18. Obtenção e caracterização de blendas de poli(p-dionanona)/poli(L-acido lactico) (PPD/PLLA) para aplicação como protese de menisco bioreabsorvivel
In the last years, the bioreabsorbable polymers have been gained an increased importance in the medical field, due to its charactheristics of bioreabsorbability and biocompatibility. In order to obtain a polymeric material adequated to be used as meniscus prosthesis, bioreabsorbable blends of poly (L-lactic acid) (PLLA) and poly-p-dioxanone (PPD) have been p
Publicado em: 2001
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19. Cultura de celulas vero sobre polimeros bioabsorviveis a base de poli(L-acido lactico)
Polymeric biomaterials are developed compounds used as substitutes for damaged tissue. A c1ass of biomaterials is the bioabsorbable ones, which are polymers that degrade in vitro as well as in vivo and are used in tissues that need a temporary support until its tissue regeneration happens. Among the several bioabsorbable polymers, the poly (L-acid lactic) [P
Publicado em: 2001
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20. Biodegradation and in vivo biocompatibility of rosin: a natural film-forming polymer
The specific aim of the present study was to investigate the biodegradation and biocompatibility characteristics of rosin, a natural film-forming polymer. Both in vitro as well as in vivo methods were used for assessment of the same. The in vitro degradation of rosin films was followed in pH 7.4 phosphate buffered saline at 37°C and in vivo by subdermal imp
Springer-Verlag.
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21. Preparation, in vitro release, in vivo absorption and biocompatibility studies of insulin-loaded microspheres in rabbits
The purpose of this study was to develop a single-dose insulin delivery system based on poly (lactide-co-glycolide) (PLGA) microspheres to provide basal insulin level for a prolonged period. Insulin-loaded PLGA microspheres were prepared by water-in-oil-in-water double emulsion (batch A) and solid-in0oil-in-water emulsion (batch B) methods. Microspheres were
Springer-Verlag.
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22. Use of a composite Biomer-butyl rubber/Biomer material to prevent transdiaphragmatic water permeation during long-term, electrically-actuated left ventricular assist device (LVAD) pumping
The pumping diaphragm of the Texas Heart Institute (THI) E-Type ALVAD must perform the dual functions of providing a flexible blood interface and isolating the electrical actuator from adjacent fluids. Thus, protection is required against fluid leakage and moisture diffusion to prevent corrosion and damage to electrical actuator components. Average diffusion
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23. Complement C3 participation in monocyte adhesion to different surfaces.
As part of an ongoing investigation into the role of the monocyte/macrophage in biocompatibility, a major goal is to identify the adhesion mechanisms that initiate and promote the observed in vivo morphologic progression of monocyte-to-macrophage-to-foreign body giant cell on biomaterials. We have exploited differently modified polystyrenes, specific compone