Phospholipid Dppc
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. Distribution of Xanthene Dyes in DPPC Vesicles: Rationally Accounting for Drug Partitioning Using a Membrane Model
The correct selection of a dye that has effective action as a photosensitizer is a primary concern for successful therapeutic outcomes. The effectiveness of the photodynamic agent is related to both the targeting of cell membranes and the photochemical yield of the chosen dye. The distributions of xanthene derivatives Eosin Y, Erythrosin B, and Rose Bengal B
J. Braz. Chem. Soc.. Publicado em: 2016-11
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2. Electron paramagnetic resonance (EPR) spectral components of spin-labeled lipids in saturated phospholipid bilayers: effect of cholesterol
Electron paramagnetic resonance (EPR) spectroscopy was used to study the main structural accommodations of spin labels in bilayers of saturated phosphatidylcholines with acyl chain lengths ranging from 16 to 22 carbon atoms. EPR spectra allowed the identification of two distinct spectral components in thermodynamic equilibrium at temperatures below and above
Quím. Nova. Publicado em: 2013
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3. Caracterização das monocamadas mistas (DPPC+BCD) de Langmuir: efeito da estrutura e concentração do BCD e da força iônica na subfase / Characterization of (DPPC+BCD) Langmuir mixed monolayers: effects of BCD structure and concentration and ionic strengths in subphase
Neste trabalho foram estudadas as interações entre os corantes ciânicos com dois cromóforos (BCD) e monocamadas de Langmuir de fosfolipídio (DPPC). Devido ao alto coeficiente de absorção molar da luz na região ? >600 nm, ao alto rendimento quântico do estado tripleto, à alta fotocitotoxicidade e à alta afinidade com estruturas celulares os BCD sã
Publicado em: 2009
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4. Electron magnetic resonance in studies of biologically-relevant systems. / Ressonância magnética eletrônica no estudo de sistemas de interesse biológico
In this work, we made use of the Electron Paramagnetic Resonance (EPR) spectroscopy along with the so-called reporter group technique and extensive spectral simulations by means of the software NLSL to investigate the interaction of nicotine with model membranes. Besides that we also employed Ferromagnetic Resonance (FMR), which is a technique similar in man
Publicado em: 2009
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5. Estudo de monocamadas fosfolipidicas nanoestruturadas obtidas por LB para aplicações em biossensores
There has been long-standing interest in the physical chemical properties of defined mixtures of cholesterol and phospholipids in monolayer and bilayer membranes. They also provide insight into certain properties of the membranes of animal cells. Even if phospholipids and sphingolipids build up the matrix of cellular membranes, sterols are essential componen
Publicado em: 2007
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6. Optimum adsorption of phospholipid bilayer on silica and reconstitution of receptor function. / Adsorção ótima de bicamada fosfolipídica sobre sílica e reconstituição do reconhecimento receptor-ligante
The general objective of this project was to continue evaluating the suitability of amphiphiles that aggregate in aqueous solution forming bilayers, to cover surfaces of silica. A secondary objective pursued was to promote the reconstitution of the receptor-ligand function, having as a model the monosialoganglioside GM1 and the enterotoxin of the choleric vi
Publicado em: 2006
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7. Adiabatic differential scanning calorimetric study of divalent cation induced DNA - DPPC liposome formulation compacted for gene delivery
Complexes between nucleic acids and phospholipid vesicles have been developed as stable non-viral gene delivery vehicles. Currently employed approach uses positively charged lipid species and a helper zwitterionic lipid, the latter being applied for the stabilization of the whole complex. However, besides problematic steps during their preparation, cationic
Brazilian Archives of Biology and Technology. Publicado em: 2004-11
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8. Filmes de Langmuir e vesículas multilamelares de fosfolipídios e suas interações com um peptídeo oriundo da proteína p24 do HIV-1 / Langmuir films and multilamellar vesicles of phospholipids and its interactions with peptide from p24 protein from HIV-1
The investigation of the interaction mechanisms between the viruses and the host cells brings relevant information for the identification of targets on the development of drugs to prevent the penetration and/or development of the viruses. Peptides designed from viral proteins have been developed and tested on its capacities of inhibiting the merging process
Publicado em: 2003
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9. Lipid-protein interaction in the glycophorin-dipalmitoylphosphatidylcholine system: Raman spectroscopic investigation
Raman spectra have been recorded as a function of temperature for lipid-protein complexes of glycophorin isolated from erythrocyte membranes reconstituted with dipalmitoylphosphatidylcholine (DPPC) and its chain perdeuterated analogue ([2H62]DPPC). The conformation of the phospholipid hydrocarbon chains in the vicinity of protein is drastically altered from
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10. Fluorescently labeled pulmonary surfactant protein C in spread phospholipid monolayers.
Pulmonary surfactant, a lipid-protein complex, secreted into the fluid lining of lungs prevents alveolar collapse at low lung volumes. Pulmonary surfactant protein C (SP-C), an acylated, hydrophobic, alpha-helical peptide, enhances the surface activity of pulmonary surfactant lipids. Fluorescein-labeled SP-C (F-SP-C) (3, 6, 12 wt%) in dipalmitoylphosphatidyl
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11. Differential scanning calorimetric study of the effect of sterol side chain length and structure on dipalmitoylphosphatidylcholine thermotropic phase behavior.
We have investigated the thermotropic phase behavior of dipalmitoylphosphatidylcholine (DPPC) bilayers containing a series of cholesterol analogues varying in the length and structure of their alkyl side chains. We find that upon the incorporation of up to approximately 25 mol % of any of the side chain analogues, the DPPC main transition endotherm consists
The Biophysical Society.
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12. Binding of Adenovirus Capsid to Dipalmitoyl Phosphatidylcholine Provides a Novel Pathway for Virus Entry
Adenovirus (Ad) is an airborne, nonenveloped virus infecting respiratory epithelium. To study the mechanism of Ad entry, we used alveolar adenocarcinoma A549 cells, which have retained the ability of alveolar epithelial type II cells to synthesize the major component of pulmonary surfactant, disaturated phosphatidylcholine. Stimulation of phosphatidylcholine
American Society for Microbiology.