Biomembrane
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. BACTERIAL NANOCELLULOSE BIOMEMBRANE AS A SUPPORT FOR HUMAN INSULIN AIMING AT TRANSDERMAL PERMEATION
Production of bacterial nanocellulose was pursued as a matrix system for the stabilization of human insulin. The biomembranes produced by Gluconacetobacter hansenii were washed with 2% aqueous sodium dodecylsulfate solution, rinsed with ultrapure water and immersed in 1 mol L-1 NaOH aqueous solution at 60 °C for 90 min until neutralization. For the insulin
Quím. Nova. Publicado em: 2020-05
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2. Repair of Bone Defects with Chitosan-Collagen Biomembrane and Scaffold Containing Calcium Aluminate Cement
Resumo Biomateriais inovadores podem fornecer uma promissora nova direção para o tratamento de defeitos ósseos, estimulando um processo de reparo adequado, sem danos aos tecidos adjacentes. O objetivo deste estudo in vivo foi avaliar a biocompatibilidade e a capacidade osteoindutora de uma biomembrana e um scaffold compostos por colágeno e quitosana, con
Braz. Dent. J.. Publicado em: 2017-06
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3. Chitosan-collagen biomembrane embedded with calcium-aluminate enhances dentinogenic potential of pulp cells
Abstract The development of biomaterials capable of driving dental pulp stem cell differentiation into odontoblast-like cells able to secrete reparative dentin is the goal of current conservative dentistry. In the present investigation, a biomembrane (BM) composed of a chitosan/collagen matrix embedded with calcium-aluminate microparticles was tested. The BM
Braz. oral res.. Publicado em: 26/04/2016
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4. Effect of penehyclidine hydrochloride on β-arrestin-1 expression in lipopolysaccharide-induced human pulmonary microvascular endothelial cells
β-arrestins are expressed proteins that were first described, and are well-known, as negative regulators of G protein-coupled receptor signaling. Penehyclidine hydrochloride (PHC) is a new anti-cholinergic drug that can inhibit biomembrane lipid peroxidation, and decrease cytokines and oxyradicals. However, to date, no reports on the effects of PHC on β-ar
Braz J Med Biol Res. Publicado em: 02/12/2013
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5. The level of environmental noise affects the physiological performance of Glycine max under water deficit
Plants in natural environments are subjected to a multitude of environmental cues. However, studies addressing physiological analyzes are usually focused on the isolation of a stress factor, making it difficult to understand plants behavior in their extremely complex natural environments. Herein, we analyzed how environmental variability (noise) may influenc
Theor. Exp. Plant Physiol.. Publicado em: 2013
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6. Biomembrana de quitosana-alginato na cicatrização de úlceras cutâneas em ratos. / Chitosan-alginate biomembrane on wound healing in rats.
Chronic wounds require a long treatment time, resulting in high-cost medical care. Therefore, the search for new natural therapeutic healing substances, non-toxic and easy access to population has gained importance in recent years. The purpose of this study was to evaluate the effectiveness of chitosan-alginate biomembrane on wound healing in rats. Two excis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/09/2012
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7. Efeito de materiais particulados em sistemas modelos de biomembranas / Effect of Particulate Material on Biomembrane Model Systems
This work presents some of the properties of mimetic systems of pulmonary surfactants (PS) composed of dipalmitoylphosphatidylcholine (DPPC) and DPPC/cholesterol and their interactions with particulate material (PM) originated from the burning of sugar cane leaves which is known by clinical studies as an injurious agent of the respiratory airways. The PM des
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/05/2012
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8. Expression of VEGF and collagen using a latex biomembrane as bladder replacement in rabbits
OBJECTIVE: To investigate the VEGF expression and collagen deposition using a latex biomembrane as bladder replacement in rabbits. MATERIALS AND METHODS: After partial cystectomy, a patch of a non-vulcanized latex biomembrane (2 x 2 cm) was sewn to the bladder of rabbits with 5/0 monofilament polydioxanone sulfate sutures in a watertight manner. Groups of 5
Int. braz j urol.. Publicado em: 2012-08
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9. The inflammatory stimulus of a natural latex biomembrane improves healing in mice
The aim of the present study was to compare healing obtained with biomembranes with the natural healing process (sham) using biochemical and immunohistological assays. C57BL/6 mice were divided into 4 groups of 15 mice each and received different subcutaneous implants: natural latex biomembrane (NLB), denatured latex (DL), expanded polytetrafluorethylene (eP
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-10
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10. Efeito de características estruturais da quitosana sobre sua interação com filmes de Langmuir como modelo de biomembrana / Effects from the structural characteristics of chitosan on its interaction in Langmuir films as biomembrane models.
Chitosans are polysaccharides used in medicine, pharmacy, dentistry and in the inhibition of microorganisms growth (eg. as bactericidal agent). In these applications their action should depend on the interaction with cell membranes, which is difficult to verify because isolating a membrane is not easy. An alternative is to investigate the interaction with me
Publicado em: 2010
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11. Use of a latex biomembrane for bladder augmentation in a rabbit model: biocompatibility, clinical and histological outcomes
PURPOSE: To investigate histological features and biocompatibility of a latex biomembrane for bladder augmentation using a rabbit model. MATERIAL AND METHODS: After a partial cystectomy, a patch of a non-vulcanized latex biomembrane (2x4 cm) was sewn to the bladder with 5/0 monofilament polydioxanone sulfate in a watertight manner. Groups of 5 animals were s
International braz j urol. Publicado em: 2009-04
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12. The activity of the natural latex biomembrane from Hevea brasiliensis rubber tree in the new tissue formation in mice. / Atividade da biomembrana de látex natural da seringueira Hevea brasiliensis na neoformação tecidual em camundongos
A biomenbrana de látex natural (BLN) da serigueira HEVEA brasiliensis, utilizada como curativo no tratamento de úlceras crônicas em humanos, mostra-se eficaz no desbridamento e no estímulo à granulação, acelerando a cicatrização. Seu mecanismo de ação ainda é desconhecido, tornando-se importante avaliar sua atividade como implante na indução te
Publicado em: 2007