Synthetic Blood Vessels
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Geração de redes vasculares sintéticas tridimensionais utilizando sistemas de Lindenmayer estocásticos e parametrizados / Three-dimensional synthetic blood vessels generation using stochastic Lindenmayer systems.
As imagens de angiografia por ressonância magnética (angio-RM) ou por tomografia computadorizada (angio-TC) permitem uma análise minuciosa das redes vasculares. A segmentação de redes vasculares a partir de tais imagens é uma das tarefas iniciais no diagnóstico de doenças vasculares como estenoses ou aneurismas. Porém, a grande diversidade de arquit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/11/2012
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2. Células mononucleares autólogas de medula óssea na regeneração do nervo tibial em coelhos / Autologous mononuclear cells from bone marrow in the regeneration of tibial nerve in rabbits
The regeneration of peripheral nerves after injury has been target in researches for new technologies that lead to good results, so as to get completely restoration of nerve function. For such, many techniques have been developed using synthetic materials associated to exogenous factors that enhance the regeneration process, as mononuclear cells of bone marr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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3. A Technique for Preparing a Cast in Synthetic Resin of the Cavities and Blood Vessels of the Heart
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4. Intravascular release of intact cellular fibronectin during oxidant-induced injury of the in vitro perfused rabbit lung.
Fibronectin (Fn) is produced by cells in blood vessels at inflammatory sites in vivo. Fn release into the circulation thus may be a marker for vascular injury. In support of this, we found that oxidant-induced vascular injury of isolated perfused rabbit lungs caused elevated circulating Fn levels. Western blot analysis indicated that Fn released from the inj
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5. Streptococcal Pyrogenic Exotoxin F (SpeF) Causes Permeabilization of Lung Blood Vessels
Acute respiration distress syndrome (ARDS) is a typical complication in toxic shock-like syndrome (TSLS) caused by Streptococcus pyogenes. An isolated perfused rat lung model was used to identify the causative agent of ARDS in TSLS in this study. Some crude preparations separated from the culture supernatants of S. pyogenes isolates caused rapid increases in
American Society for Microbiology.
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6. Expression of SPARC during development of the chicken chorioallantoic membrane: evidence for regulated proteolysis in vivo.
SPARC is a secreted glycoprotein that has been shown to disrupt focal adhesions and to regulate the proliferation of endothelial cells in vitro. Moreover, peptides resulting from the proteolysis of SPARC exhibit angiogenic activity. Here we describe the temporal synthesis, turnover, and angiogenic potential of SPARC in the chicken chorioallantoic membrane. C
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7. Identification of Synthetic Endothelial Cell-Specific Promoters by Use of a High-Throughput Screen
Transcriptional targeting is a desirable property for many gene transfer applications. Because endothelial cells line most blood vessels, they are attractive candidates for the introduction of therapeutic gene products. As a proof-of-concept study, we attempted to identify a synthetic, endothelial cell-specific promoter by use of a high-throughput screen inv
American Society for Microbiology.
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8. Cell division in the synovial lining in experimental allergic arthritis: proliferation of cells during the development of chronic arthritis.
The synovial tissue in experimentally induced immune arthritis induced in the rabbit has been used as a model of rheumatoid arthritis to determine which cells may contribute to the growth of this tissue. Tissue from the challenged and from the unchallenged knee joints was taken, after the intra-articular injection of a small amount of tritiated thymidine, fr
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9. Angiostatic peptides use plasma fibronectin to home to angiogenic vasculature
A group of angiogenesis inhibitors are derived from fragments of extracellular matrix or blood proteins. Endostatin, antithrombin, and anastellin are members of this group of substances. The plasma adhesion proteins fibronectin and vitronectin serve as cofactors for these three antiangiogenic proteins. Anginex is a synthetic 33-amino acid peptide that was or
National Academy of Sciences.
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10. Neuronal origin of a cerebral amyloid: neurofibrillary tangles of Alzheimer's disease contain the same protein as the amyloid of plaque cores and blood vessels.
The protein component of Alzheimer's disease amyloid [neurofibrillary tangles (NFT), amyloid plaque core and congophilic angiopathy] is an aggregated polypeptide with a subunit mass of 4 kd (the A4 monomer). Based on the degree of N-terminal heterogeneity, the amyloid is first deposited in the neuron, and later in the extracellular space. Using antisera rais
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11. Ultrastructural localization of a neutral and basic amino acid transporter in rat kidney and intestine.
A sodium-independent neutral and basic amino acid transporter (NBAT) from rat kidney was recently cloned and its amino acid sequence deduced. We used light and electron microscopic immunoperoxidase labeling to determine the cellular localization of NBAT in rat kidney and small intestine. The localization was carried out using site-directed antisera raised ag
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12. Synthetic peptide homologous to beta protein from Alzheimer disease forms amyloid-like fibrils in vitro.
Progressive amyloid deposition in senile plaques and cortical blood vessels may play a central role in the pathogenesis of Alzheimer disease. We have used x-ray diffraction and electron microscopy to study the molecular organization and morphology of macromolecular assemblies formed by three synthetic peptides homologous to beta protein of brain amyloid: bet