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@ARTICLE{Oszlanczi:11680,
author = {Oszlanczi, A. and Bóta, A. and Klumpp, E.},
title = {{I}nfluence of aminoglycoside antibiotics on the thermal
behaviour and structural features of {DPPE} - {DPPG} model
membranes},
journal = {Colloids and surfaces / B},
volume = {75},
issn = {0927-7765},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-11680},
pages = {141 - 148},
year = {2010},
note = {This work was supported by the Hungarian Scientific Funds
OTKA (Bota, T 43055) and a German-Hungarian Research
Project. We wish to thank Cs Novak for giving the
opportunity for the calorimetric measurements, and Mrs. T.
Kiss and Mrs. E Toth for technical assistance at the
freeze-fracture and DSC measurements, respectively.},
abstract = {The effects of three aminoglycosides (AGs), tobramycin,
streptomycin and spectinomycin on
1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine
(DPPE)-1,2-dipalmitoyl-sn-glycero-3-[phospho-rac-1-glycerol]
(DPPG)/water systems with 0.05 and 0.2 DPPG/DPPE+DPPG molar
fractions were examined by using differential scanning
calorimetry (DSC), simultaneous small- and wide-angle X-ray
scattering (SWAXS), and freeze-fracture transmission
electronmicroscopy (FF-TE) at 10(-1) AG/lipid molar ratio in
the doped systems. The effects induced by the AGs strongly
depend on DPPG/DPPE+DPPG molar fraction. In the presence of
the AGs regular lyotropic structures form as opposed to the
complex and badly correlated layer structures of the pure
0.2 DPPG/DPPE+DPPG molar fraction system. The investigated
AGs possess different structural and thermotropic effects:
tobramycin and streptomycin which are true aminoglycosides
decrease the main transition enthalpy in both model systems
and induce the formation of correlated layer arrangements,
while the occurrence of spectinomycin, a non-aminoglycoside
aminocyclitol still ranked as an AG, results in a hexagonal
phase as it can be deduced from the SAXS patterns and
visually observed in the electronmicrographs.},
keywords = {Aminoglycosides: chemistry / Aminoglycosides: pharmacology
/ Anti-Bacterial Agents: chemistry / Anti-Bacterial Agents:
pharmacology / Calorimetry, Differential Scanning / Freeze
Fracturing / Membranes, Artificial / Microscopy, Electron,
Transmission / Models, Chemical / Phase Transition: drug
effects / Phosphatidylethanolamines: chemistry /
Phosphatidylglycerols: chemistry / Scattering, Small Angle /
Spectinomycin: chemistry / Spectinomycin: pharmacology /
Surface Properties: drug effects / Temperature / X-Ray
Diffraction / Aminoglycosides (NLM Chemicals) /
Anti-Bacterial Agents (NLM Chemicals) / Membranes,
Artificial (NLM Chemicals) / Phosphatidylethanolamines (NLM
Chemicals) / Phosphatidylglycerols (NLM Chemicals) /
Spectinomycin (NLM Chemicals) /
1,2-dipalmitoyl-3-phosphatidylethanolamine (NLM Chemicals) /
1,2-dipalmitoylphosphatidylglycerol (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:19748239},
UT = {WOS:000278695300018},
doi = {10.1016/j.colsurfb.2009.08.027},
url = {https://juser.fz-juelich.de/record/11680},
}