References of "Deleu, Magali"
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See detailEffect Of The Antibiotic Azithromycin On Thermotropic Behavior Of Dopc Or Dppc Bilayers
Fa, N.; Ronkart, Sébastien ULg; Schanck, A. et al

in Chemistry and Physics of Lipids (2006), 144(1),

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See detailFengycin Interaction With Lipid Monolayers At The Air-Aqueous Interface - Implications For The Effect Of Fengycin On Biological Membranes
Deleu, Magali ULg; Paquot, Michel ULg; Nylander, T.

in Journal of Colloid and Interface Science (2005), 283(2), 358-365

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See detailHemolytic activity of new linear surfactin analogs in relation to their physico-chemical properties
Dufour, Samuel; Deleu, Magali ULg; Nott, Katherine ULg et al

in Biochimica et Biophysica Acta - General Subjects (2005), 1726

New linear analogs of surfactin have been synthesized. Their physico-chemical parameters were determined. The results indicate that these linear products show surface activities although they are lowered ... [more ▼]

New linear analogs of surfactin have been synthesized. Their physico-chemical parameters were determined. The results indicate that these linear products show surface activities although they are lowered compared to those of cyclic compounds. The hemolytic activities have also been assayed. In contrast with cyclic surfactins, no significant hemolysis occurs for the linear products in the range of concentrations tested. Moreover, a protective effect against Triton X-100 induced hemolysis has been highlighted for linear surfactins. The concentration at which this protective effect happens is correlated directly to the CMC, and inversely to the acyl chain length of the product. In a hypotonic medium, analogs having a long acyl chain tend to increase the hemolysis, meanwhile the product with the shortest chain tends to decrease it. [less ▲]

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See detailProbing fluoroquinoone-biomembrane interactions on the nanoscale
Fa, Nathalie; Burton, Ingrid; Deleu, Magali ULg et al

Poster (2005)

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See detailEffect of potential drugs on model membranes - An AFM study
Eeman, Marc; Deleu, Magali ULg; Paquot, Michel ULg et al

Poster (2005)

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See detailHemolytic activity of new linear surfactin analogs
Dufour, Samuel; Deleu, Magali ULg; Wathelet, Bernard ULg et al

Poster (2005)

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See detailEffects of bioactive amphiphiles on model cell membranes
Deleu, Magali ULg

in 11th W. Mejbaum-Katzenellenbogen's Molecular Biology Seminar: amphiphiles and their aggregates in basic and applied science (2005)

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See detailNanoscale Properties Of Mixed Fengycin/Ceramide Monolayers Explored Using Atomic Force Microscopy
Eeman, M.; Deleu, Magali ULg; Paquot, Michel ULg et al

in Langmuir (2005), 21(6),

To gain insight into the interactions between fengycin and skin membrane lipids, mixed fengycin/ceramide monolayers were investigated using atomic force microscopy (AFM) (monolayers supported on mica) and ... [more ▼]

To gain insight into the interactions between fengycin and skin membrane lipids, mixed fengycin/ceramide monolayers were investigated using atomic force microscopy (AFM) (monolayers supported on mica) and surface pressure-area isotherms (monolayers at the air-water interface). AFM topographic images revealed phase separation in mixed monolayers prepared at 20 °C/pH 2 and composed of 0.25 and 0.5 fengycin molar ratios, in the form of two-dimensional (2-D) hexagonal crystalline domains of ceramide surrounded by a fengycin-enriched fluid phase. Surface pressure-area isotherms as well as friction and adhesionAFMimages confirmed that the two phases had different molecular orientations: while ceramide formed a highly ordered phase with crystalline chain packing, fengycin exhibited a disordered fluid phase with the peptide ring lying horizontally on the substrate. Increasing the temperature and pH to values corresponding to the skin parameters, i.e., 37 °C/pH 5, was found to dramatically affect the film organization. At low fengycin molar ratio (0.25), the hexagonal ceramide domains transformed into round domains, while at higher ratio (0.5) these were shown to melt into a continuous fengycin/ceramide fluid phase. These observations were directly supported by the thermodynamic analysis (deviation from the additivity rule, excess of free energy) of the monolayer properties at the air-water interface. Accordingly, this study demonstrates that both the environmental conditions (temperature,pH)andfengycin concentration influence the molecular organization of mixed fengycin/ceramide monolayers.Webelieve that the ability to modulate the formation of 2-D domains in the skin membrane may be an important biological function of fengycin, which should be increasingly investigated in future pharmacological research. [less ▲]

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See detailNovel use of lipopeptide preparations
Deleu, Magali ULg; Brans, Alain; Brasseur, Robert ULg et al

Patent (2004)

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See detailFrom renewable vegetables resources to microorganisms: new trends in surfactants
Deleu, Magali ULg; Paquot, Michel ULg

in Comptes Rendus Chimie (2004), 7(6-7), 641-646

Surfactants are an important class of chemical products in view of the volumes sold and of their great variety of applications. Biosurfactants produced by microorganisms, and surfactants derived from ... [more ▼]

Surfactants are an important class of chemical products in view of the volumes sold and of their great variety of applications. Biosurfactants produced by microorganisms, and surfactants derived from renewable raw materials are coming progressively onto the market. Considering their many properties and large field of applications, their development needs extensive cooperation across disciplines (chemists, physicochemists, biologists, product developers, formulators...) in order to fully characterize them (chemical structure, surface activity, self assembly properties...) and identify their potential uses. New value adding opportunities will result from the identification of specific activities of biosurfactants, especially in relation with their biological effects (antibiotic, antifungal, insecticide, antiviral and antitumoral agent, immunomodulator or specific toxins and enzyme inhibitors). (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved. [less ▲]

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See detailNanoscaleorganization of mixed fengycin/lipid monolayers
Eeman, Marc; Deleu, Magali ULg; Paquot, Michel ULg et al

Poster (2004)

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See detailInteraction of antimicrobial lipopeptides from Bacillus subtilis with lipid membranes
Deleu, Magali ULg; Paquot, Michel ULg; Olofsson, Gerd et al

Poster (2004)

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See detailStudy of surfactin penetration into lipid monolayers by using AFM
Eeman, Marc; Berquand, Alexandre; Dufrêne, Yves et al

Poster (2004)

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See detailInteraction of lipopeptides from Bacillus subtilis with lipid vesicles
Deleu, Magali ULg; Paquot, Michel ULg; Olofsson, Gerd et al

Poster (2004)

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See detailInteraction between antimicrobial peptides and membranes
Deleu, Magali ULg

Conference (2004)

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See detailInteraction Of Surfactin With Membranes: A Computational Approach
Deleu, Magali ULg; Bouffioux, O.; Razafindralambo, Hary ULg et al

in Langmuir (2003), 19(8),

Detailed reference viewed: 52 (15 ULg)