Abstract：
:The present study is aimed to characterize the electrostatic parameters of oil in water emulsion droplets composed of MCT (medium chain triglycerides), PL (phospholipids) and Poloxamer and containing increasing concentrations of the cationic lipid oleylamine (OA), in Hepes 20 mM pH 7.4. The initial zeta-potential data suggesting saturation of the droplet surface at high OA concentrations were completed by supplementary analysis: the distribution of the oleylamine within the droplet was determined by reacting the amino groups with the hydrophilic TNBS (trinitrobenzenesulfonic acid), the method being initially standardised with vesicles. In addition, surface potential and pH at the droplet surface were monitored by the pH-sensitive fluorophore 4-heptadecyl-7-hydroxycoumarin. Our results demonstrate that almost all the OA is localised and fully ionised at the droplet surface for all concentrations and that the observed plateau in the zeta-potential values obeys the Gouy-Chapman theory of ion condensation. It is also shown that the slipping plane separation as estimated by the Eversole-Boardman equation is higher that the expected values of 0.2 nm as a result of the relative position of the fluorophore and the outer boundary of the lipid interface thickness and the Poloxamer anchored at the interface only plays a minor role.
journal_name
Chem Phys Lipidsjournal_title
Chemistry and physics of lipidsauthors
Rabinovich-Guilatt L,Couvreur P,Lambert G,Goldstein D,Benita S,Dubernet Cdoi
10.1016/j.chemphyslip.2004.04.003subject
Has Abstractpub_date
2004-08-01 00:00:00pages
1-13issue
1eissn
0009-3084issn
1873-2941pii
S0009308404000519journal_volume
131pub_type
杂志文章abstract：:Caged ceramide analogues (C6-, C16-, C18-, C22- and C24-Cer) have been prepared by introducing a hydrophilic coumarin-based cage bearing a short polyethylene glycol (PEG) chain. (6-Bromo-7-mTEGylated-coumarin-4-yl)methyl (Btc) caged ceramide showed efficient photo-uncaging to release the parent ceramide upon direct ex...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2015.07.006
更新日期：2016-01-01 00:00:00
abstract：:Lipids play an important role in the maturation, viability and function of sperm cells. In this study, we examined the neutral and polar lipid composition of boar spermatozoa by thin-layer chromatography/mass spectrometry. Main representatives of the neutral lipid classes were diacylglycerols containing saturated (myr...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2013.11.001
更新日期：2014-01-01 00:00:00
abstract：:The role of the ceramide moiety of gangliosides, together with the deriving aggregative properties of ganglioside in solution, in the process of ganglioside-cell interactions was studied. The natural GM1(stearoyl) and the synthetic GM1(acetyl), containing the stearoyl and acetyl groups as the acyl moiety, respectively...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(92)90048-t
更新日期：1992-07-01 00:00:00
abstract：:The concentration of TL in Penaeus kerathurus muscle and cephalothorax was 1.03+/-0.04 (75.9+/-0.8% of which was PhL) and 2.36+/-0.07% (45.5+/-0.8% of which was PhL) of the wet tissue, respectively. The phosphatidylethanolamine represented 26.4+/-0.6% (85.6% diacyl- and 14.4% alkyl-acyl- or alkenyl-acyl-analogues) of ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2008.01.003
更新日期：2008-04-01 00:00:00
abstract：:Lamellar structures of intercellular lipids in stratum corneum of hairless mouse were studied at various water contents by small-angle X-ray diffraction. At room temperature there are at least two lamellar structures, long and short lamellar structures, with repeat distances of 13.6 and around 6 nm, respectively. The ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(02)00126-3
更新日期：2003-03-01 00:00:00
abstract：:We investigated the effect of pegylation on the physical stability, morphology and membrane integrity of arsonoliposomes. Arsonoliposomes composed of distearoylglycerophosphocholine (DSPC), cholesterol (Chol) and the palmitoyl side chain arsonolipid (with concentrations ranging from 0 mol% [DSPC/Chol vesicles] to 53 m...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2005.11.003
更新日期：2006-02-01 00:00:00
abstract：:Parkinson's disease is caused due to free radical generation in dopamine neurons leading to oxidative stress induced damage. The aim of this work was to ameliorate the free radical induced oxidative stress in rats by using TPGS (Tocopheryl polyethylene glycol 1000 succinate) loaded rutin nanoemulsion after oral admini...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104890
更新日期：2020-05-01 00:00:00
abstract：:DNA interactions with the bilayers of cationic liposomes were studied using a novel model experiment: DNAs were locally injected by a micropipette to a part of a giant unilamellar vesicle. The resulting phenomena were directly observed in optical microscope. Giant unilamellar vesicles (GUVs), about 100 microm in diame...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(99)00060-2
更新日期：1999-08-01 00:00:00
abstract：:Fungal infections are an important cause of morbidity and pose a serious health concern especially in immunocompromised patients. Luliconazole (LUL) is a topical imidazole antifungal drug with a broad spectrum of activity. To overcome the limitations of conventional dosage forms, LUL loaded lyotropic liquid crystallin...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.105028
更新日期：2021-01-01 00:00:00
abstract：:The quantitation of Lp(a) by immunoassay presents a major technical problem, because the molecular mass of the (a) protein of Lp(a) can vary between 419,000 and 838,000 Da (Gaubatz et al. (1990) J. Lipid Res. 31, 603-612), and this variability is determined by at least 24 alleles of the (a) gene. In an attempt to over...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(94)90144-9
更新日期：1994-01-01 00:00:00
abstract：:Cardiolipins (CLs) are important biologically for their unique role in biomembranes that couple phosphorylation and electron transport like bacterial plasma membranes, chromatophores, chloroplasts and mitochondria. CLs are often tightly coupled to proteins involved in oxidative phosphorylation. The first step in under...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2013.12.010
更新日期：2014-02-01 00:00:00
abstract：:Cardiolipin (CL) is a phospholipid with many unique characteristics. CL is synthesized in the mitochondria and resides almost exclusively within the mitochondrial inner membrane. Unlike most phospholipids that have two fatty acyl chains, CL possesses four fatty acyl chains resulting in unique biophysical characteristi...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2015.09.005
更新日期：2015-12-01 00:00:00
abstract：:Divalent cation (Ca2+ and Mg2+) and hydrogen ion-induced fusions of small unilamellar phosphatidic acid vesicles were studied by the use of fluorescence fusion assay. These fusogenic ions also increased interfacial tension and reduced the surface dielectric constant of phosphatidic acid membranes as the ion concentrat...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(93)90017-w
更新日期：1993-10-01 00:00:00
abstract：:We have studied the interaction of water with the lipid head group by gravimetrically measuring the lipid water adsorption and the lateral dc electrical conductivity increase resulting from this hydration. We have done this for dimyristoyl phosphatidylcholine (DMPC) having protonated or deuterated hydrocarbon chains. ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2004.05.003
更新日期：2004-09-01 00:00:00
abstract：:The influence of the temperature on the adsorption of monomeric and micellar solutions of the anionic surfactant sodium dodecyl sulfate (SDS) on phosphatidylcholine (PC) liposomes was investigated using the fluorescent probe 2-(p-toluidinyl)-naphthalene-6-sodium sulfonate (TNS). The number of adsorbed molecules was qu...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(03)00022-7
更新日期：2003-06-01 00:00:00
abstract：:Surface plasmon resonance (SPR) has become one of the most important techniques for studying macromolecular interactions. The most obvious advantages of SPR over other techniques are: direct and rapid determination of association and dissociation rates of binding process, no need for labelling of protein or lipids, an...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2006.02.010
更新日期：2006-06-01 00:00:00
abstract：:From 81 of human plasma of blood-group A Lea nonsecretors three different Lea blood-group active ceramide pentasaccharides (a total of 4.65 mg) have been isolated, all revealing glucose, galactose, N-acetylglucosamine and fucose in molar ratios of 1 : 2 : 1 : 1 as determined by gas liquid chromatography. A fourth bloo...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(78)90040-3
更新日期：1978-09-01 00:00:00
abstract：:The effect of several synthetic peptides based on the sequence of human pulmonary surfactant-associated protein B (SPB) on the molecular packing of model membrane lipids (7:1 dipalmitoyl phosphatidylcholine (DPPC)/dipalmitoyl phosphatidylglycerol (DPPG)) was studied using fluorescence anisotropy. This information was ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(91)90039-e
更新日期：1991-12-01 00:00:00
abstract：:2-N-(Hexadecanoyl)-amino-4-nitrophenyl phosphorylcholine-hydroxide a compound resembling sphingomyelin is synthesized. It is cleaved by sphingomyelinase to the chromogenic N-acylaminonitrophenyl moiety. Phospholipase C preparations do not hydrolyze this compound. The starting material is 2-amino-4-nitrophenol which wh...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(76)90015-3
更新日期：1976-02-01 00:00:00
abstract：:Irreversible electroporation (IRE) is a new technique in which a series of short pulses with high frequency electrical energy is applied on the targeted regions of cells or vesicles for their destruction or rupture formation. IRE induces lateral tension in the membranes of vesicles. We have investigated the electrosta...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104935
更新日期：2020-09-01 00:00:00
abstract：OBJECTIVE:Fat-soluble vitamins (A, D, E and K) are isoprene derived apolar molecules. While deficiencies of these vitamins have been associated with various diseases such as type 2 diabetes and cancer, high doses of Vitamin A and D can cause toxic effects. Accurate detection of serum levels of these vitamins have criti...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104932
更新日期：2020-08-01 00:00:00
abstract：:The mass spectra of a number of C-4alpha- and C-4beta-alkylated cholestan-3beta, 5alpha-diols have been found to contain an intense ion at m/e 332. the corresponding 6beta-alkylated (R) cholestan-3beta, 5alpha-diols exhibit an abundant ion at m/e 331 + R. The mass spectra of cholestan-5alpha-ol and cholestan-3beta, 5a...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(76)90013-x
更新日期：1976-02-01 00:00:00
abstract：:The gel-like liquid phase transition of dimyristoylphosphatidylcholine (DMPC) large unilamellar vesicles prepared by reverse phase evaporation has been investigated in buffers containing ethanol by quasi-elastic light scattering (QLS) and vibrational (infrared and Raman) spectroscopy. With the QLS technique, the relat...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(88)90001-1
更新日期：1988-12-01 00:00:00
abstract：:Metabolic labeling, in which substrate analogs containing diminutive tags can infiltrate biosynthetic pathways and generate labeled products in cells, has led to dramatic advancements in the means by which complex biomolecules can be detected and biological processes can be elucidated. Within this realm, metabolic lab...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104971
更新日期：2020-10-01 00:00:00
abstract：:Cholesterol has limited solubility in phospholipid bilayers. The solubility limit is strongly dependent on the nature of the lipid with which the cholesterol is mixed while properties of the crystals formed can be modified by phospholipid-cholesterol interactions. In this review we summarize the various methods that h...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2016.06.006
更新日期：2016-09-01 00:00:00
abstract：:Three novel polymerizable ether lipids, 1,2-O-bis[10(2',4'-hexadienoyloxy)decyl]-rac, 1,2-O-bis(10,12-tricosadiynyl)-rac, and (-)-2,3-O-bis(10,12-tricosadiynyl)-sn-glycero-1-phosphocholine, were synthesized from 3-O-benzyl-rac, 3-O-trityl-rac and (-)-1-O-trityl-sn-glycerol as starting materials, respectively. All the ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(92)90100-4
更新日期：1992-05-01 00:00:00
abstract：:A new polymerizable surfactant, 12-methacryloyl dodecylphosphocholine (MDPC), has been synthesized using a three-step procedure in moderate yield. Phase transitions were characterized by DSC and phase behavior in water was determined by surface tension and polarizing microscopy. MDPC showed typical surfactant behavior...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2010.03.001
更新日期：2010-05-01 00:00:00
abstract：:We consider the situation of integral membrane proteins in a lipid bilayer matrix where the size of the polar group of the protein is important in determining the lateral packing of the proteins. We represent the cross-section of the protein hydrophobic core as a hexagon moving on a lattice, and represent the projecti...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(88)90041-2
更新日期：1988-04-01 00:00:00
abstract：:Iron is required for the initiation of lipid peroxidation. Evidence is presented that lipid peroxidation requires both Fe3+ and Fe2+, perhaps with oxygen to form a Fe3+-dioxygen-Fe2+ complex. Other mechanisms of initiation, mostly involving the iron-catalyzed formation of hydroxyl radical, are described and discussed ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/0009-3084(87)90050-8
更新日期：1987-07-01 00:00:00
abstract：:The diffusion of a lipid fluorescent analogue across tight junctions in MDCK-I cells was studied by FRAP measurements. Cells were labelled with C6-NBD-PC at the apical cell membrane. Transepithelial resistance of MDCK-I cells was found to be higher than 3000 omega x cm2, which indicates the presence of a very tight ep...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(94)90066-3
更新日期：1994-05-23 00:00:00
