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@ARTICLE{Oszlnczi:11681,
author = {Oszlánczi, A. and Bóta, A. and Berényi, S. and Klumpp,
E.},
title = {{S}tructural and morphological changes in bacteria-membrane
mimetic {DPPE}/{DPPG}/water systems induced by sulfadiazine},
journal = {Colloids and surfaces / B},
volume = {76},
issn = {0927-7765},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-11681},
pages = {519 - 528},
year = {2010},
note = {This work was supported by Hungarian Scientific Funds OTKA
(Bota, T 43055) and a bilateral German-Hungarian Research
Project. We thank Mrs. T. Kiss for the technical assistance
with freeze-fracture measurements.},
abstract = {The effects of sulfadiazine (SD), one of the generally used
antibiotics was studied on bacteria-membrane mimetic model
systems consisting of pure
dipalmitoylphosphatidylethanolamine (DPPE) and
DPPE/dipalmitoylphosphatidylglycerol (DPPG) at 95/5, 80/20
and 50/50 DPPE/DPPG ratios by using differential scanning
calorimetry (DSC), simultaneous small- and wide-angle X-ray
scattering (SWAXS) and freeze-fracture technique. In the
presence of SD, varied between 10-3 and 1 SD/lipid molar
ratios, the 95/5 DPPE/DPPG system shows tendentious
destruction in the layer arrangement which is accompanied by
minor perturbations in the thermotropic behaviour. Moreover,
at this lipid composition the addition of SD results in the
formation of stacks of extremely extended flat bilayers.
Systems having a higher DPPG molar ratio exhibit complex and
diffuse morphologies. At 50/50 DPPE/DPPG ratio DPPG and SD
act together and form large spherical vesicles. The uniform
morphology is not accompanied by a regular lamellar
arrangement. The range of the SD/lipid ratio, where the SD
molecules are embedded into the lipid bilayers, extends to
about 10-1. Over this limit the separation of SD molecules
can be observed at all investigated DPPE/DPPG ratios.},
keywords = {Bacteria: chemistry / Cell Membrane: chemistry / Lipid
Bilayers: chemistry / Molecular Structure / Particle Size /
Phosphatidylethanolamines: chemistry /
Phosphatidylglycerols: chemistry / Sulfadiazine: chemistry /
Surface Properties / Temperature / Water: chemistry / Lipid
Bilayers (NLM Chemicals) / Phosphatidylethanolamines (NLM
Chemicals) / Phosphatidylglycerols (NLM Chemicals) /
1,2-dipalmitoyl-3-phosphatidylethanolamine (NLM Chemicals) /
1,2-dipalmitoylphosphatidylglycerol (NLM Chemicals) /
Sulfadiazine (NLM Chemicals) / Water (NLM Chemicals) / J
(WoSType)},
cin = {ICG-4},
ddc = {540},
cid = {I:(DE-Juel1)VDB793},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Biophysics / Chemistry, Physical / Materials Science,
Biomaterials},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:20074918},
UT = {WOS:000275352800018},
doi = {10.1016/j.colsurfb.2009.12.013},
url = {https://juser.fz-juelich.de/record/11681},
}