Phosphatidylglycerol
Mostrando 1-12 de 322 artigos, teses e dissertações.
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1. Efeito da carga dos lipídios na interação do BP100 em modelos de membrana / Charge effect of lipids in interaction of BP100 and model membranes
Antimicrobial peptides (AMPs) have been a promising alternative therapy to antibiotics. These molecules, consisting of less than 80 amino acids, with different structures and amino acids composition, have amphipathic character which gives them the ability to act on lipid bilayers. They act, by different mechanisms, over bacteria to mammal cells. The AMPs are
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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2. Avaliação dos lipídeos de membrana e das ORFs dos contratransportadores Na+/H+ e Na+/Ca2+ associados a mecanismos de adaptação à halofilia em Halococcus morrhuae
Soil saliniy is a major factor in reducing plant growth and, consequently, their agricultural productivity. Most of the studies in the literature presents a strategy for reducing the effects of improving salt tolerance in plants for the production of osmolytes and stress proteins, and there are few studies aimed at increasing salt tolerance by restoring ioni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/09/2011
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3. Dispersões lipídicas de dimiristoil fosfatidilglicerol: um estudo termo-estrutural / Lipid dispersions of dymiristoyl phosphatidylglycerol: a thermo-structural study
Dispersions of the saturated anionic phospholipid dimyristoyl phosphatidyl glycerol (DMPG) have been extensively studied regarding their peculiar thermo-structural behavior. At low ionic strength, the gel-fluid transition is spread along nearly 17 ºC, displaying several thermal events in the calorimetric profile, quite different from the single sharp peak a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2010
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4. Efeitos imunológicos da administração oral de ovalbumina encapsulada em lipossomas
Oral administration of protein antigens, such as ovalbumin, may result in induction of either tolerance or immunization. Induction of immune responses is of great interest for development of oral vaccines. On the other hand, oral tolerance may represent a therapeutic solution to allergic and auto-immune diseases. Induction of oral tolerance depends on many f
Publicado em: 2008
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5. Proteção antioxidante promovida por astaxantina sobre citocromo c, incorporado em vesículas e desafiado com SIN-1 / Antioxidant Protection Promoted by Astaxanthin over Cytochrome c Incorporated in Vesicles and Challenged with SIN-1
A astaxantina (AST) é um carotenóide derivado do β-caroteno produzido por algas e cianobactérias, mas que também pode ser encontrada em animais marinhos. Em animais, é reportada como interceptadora de radicais de oxigênio mais eficiente que o β-caroteno. O objetivo central dessa dissertação foi avaliar a capacidade antioxidante da AST em li
Publicado em: 2008
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6. Development of photosensitizing nanoparticles / Desenvolvimento de nanopartículas fotossensibilizadoras
In this work we present the synthesis and the characterization (structural, photophysical, photochemical and photobiological) of nanoparticles with incorporated photosensitizers (PS) Methylene Blue (MB) and Thionin. MB and Thionin were incorporated in sil-MB and sil-Th nanoparticles through sol-gel process. In the case of Cab-Th nanoparticles Thionin was lin
Publicado em: 2007
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7. Benznidazole vs benznidazole in multilamellar liposomes: how different they interact with blood components?
In spite of its widespread use, benznidazole's (BNZ) toxicity and low efficacy remains as major drawbacks that impair successful treatments against Chagas disease. Previously, attempting to increase the selectivity and reduce its toxicity on infected tissues, multilamellar liposomes (MLV) composed of hydrogenated soybean phosphatidylcholine (HSPC): distearoy
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-04
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8. Metabolism of Phosphatidylglycerol and Lysyl Phosphatidylglycerol in Staphylococcus aureus
The metabolism of phosphatidylglycerol and lysyl phosphatidylglycerol was studied in Staphylococcus aureus under four conditions: growing at pH 7.0 and 5.2, and not growing (resting) at pH 7.0 and 5.2. Measurements of the amounts of phosphatidylglycerol and lysyl phosphatidylglycerol, as well as labeling and pulsechase experiments, revealed that the phosphat
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9. Transfer of the phosphatidyl moiety of phosphatidylglycerol to phosphatidylethanolamine in Escherichia coli.
Phosphatidylglycerol was pulse-labeled with radioactive lipid precursors in a serine auxotroph of Escherichia coli. Most of the radioactivity of phosphatidylglycerol labeled in a serine-depleted medium was transferred to phosphatidylethanolamine during a chase in the presence of L-serine, but not in its absence. Metabolism of fatty acyl moieties labeled with
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10. Phospholipids of Streptococcus faecalis
Autoradiograms of total lipid extracts from Streptococcus faecalis ATCC 9790, harvested in the stationary phase from a medium containing 32P-orthophosphate, showed six major spots. The corresponding compounds were identified as diphosphatidylglycerol (possibly with a penta acyl structure); phosphatidylglycerol; a provisionally identified mixture of alanylpho
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11. Phosphatidylinositol cannot substitute for phosphatidylglycerol in supporting cell growth of Escherichia coli.
Escherichia coli cells are dependent on the anionic phospholipid phosphatidylglycerol for cell growth. Introduction into cells of the ability to make phosphatidylinositol did not suppress the need for naturally occurring phosphatidylglycerol. Therefore, the requirement for phosphatidylglycerol must be more than maintenance of the proper membrane surface char
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12. Incorporation of phosphatidylglycerol into murein lipoprotein in intact cells of Salmonella typhimurium by phospholipid vesicle fusion.
The biosynthesis of the diglyceride moiety of murein lipoprotein was studied by fusion of labeled phospholipid vesicles with intact cells of Salmonella typhimurium. Phosphatidylglycerol was found to be an excellent donor for the glyceryl moiety in lipoprotein, whereas phosphatidylethanolamine and cardiolipin were not. The incorporation of radioactivity from